| 1 | /*\r |
| 2 | * (C) Copyright 2002, Brian Knittel.\r |
| 3 | * You may freely use this program, but: it offered strictly on an AS-IS, AT YOUR OWN\r |
| 4 | * RISK basis, there is no warranty of fitness for any purpose, and the rest of the\r |
| 5 | * usual yada-yada. Please keep this notice and the copyright in any distributions\r |
| 6 | * or modifications.\r |
| 7 | *\r |
| 8 | * This is not a supported product, but I welcome bug reports and fixes.\r |
| 9 | * Mail to sim@ibm1130.org\r |
| 10 | */\r |
| 11 | \r |
| 12 | #define VERSION "ASM1130 CROSS ASSEMBLER V1.14"\r |
| 13 | \r |
| 14 | // ---------------------------------------------------------------------------------\r |
| 15 | // ASM1130 - IBM 1130 Cross Assembler\r |
| 16 | //\r |
| 17 | // Version\r |
| 18 | // 1.14 - 2004Oct22 - Fixed problem with BSS complaining about negative\r |
| 19 | // sizes. This may be a fundamental problem with my using\r |
| 20 | // 32-bit expressions, but for now, it appears that just\r |
| 21 | // truncating the BSS size to 16 bits is sufficient to build DMS.\r |
| 22 | // 1.13 - 2004Jun05 - Fixed sign extension of constants in expressions. Statements\r |
| 23 | // like LD /FFFF were being assembled incorrectly.\r |
| 24 | // 1.12 - 2004Jun04 - Made WAIT instruction take a displacement value.\r |
| 25 | // Doesn't affect operation, but these are used as indicators\r |
| 26 | // in the IBM one-card diagnostic programs.\r |
| 27 | // Also -- should mention that the .IPL directive was\r |
| 28 | // removed some time ago. To create bootable cards, \r |
| 29 | // use -b flag to create binary output, and post-process the\r |
| 30 | // binary output with program "mkboot"\r |
| 31 | // 1.11 - 2004May22 - Added CMP, DCM, and DECS instructions for 1800,\r |
| 32 | // thanks to Kevin Everets.\r |
| 33 | // 1.10 - 2003Dec08 - Fixed opcode value for XCH instruction, thanks to\r |
| 34 | // Roger Simpson.\r |
| 35 | // 1.09 - 2003Aug03 - Added fxwrite so asm will write little-endian files\r |
| 36 | // on all CPUs.\r |
| 37 | // 1.08 - 2003Mar18 - Fixed bug that complained about valid MDX displacement of +127\r |
| 38 | // 1.07 - 2003Jan05 - Filenames are now left in lower case. SYMBOLS.SYS stays all upper case\r |
| 39 | // 1.06 - 2002May02 - Fixed bug in ebdic constants (data goes into low byte)\r |
| 40 | // First stab at adding ISS level # info, this is iffy\r |
| 41 | // 1.05 - 2002Apr24 - Made negative BSS size a warning not an error, as it\r |
| 42 | // it's looking like it happens twice in PTMASMBL.\r |
| 43 | // This version still doesn't do fixed point numbers and\r |
| 44 | // negative floats may be wrong.\r |
| 45 | // 1.04 - 2002Apr18 - Added binary (card loader format) output, removed\r |
| 46 | // interim IPL output formats and moved that to MKBOOT.\r |
| 47 | // Enhanced relocatable code handling. Added floating\r |
| 48 | // point constants, but don't know how to make fixed point\r |
| 49 | // constants yet. Made amenable to syntax variations found\r |
| 50 | // in the DMS sources. Doesn't properly handle ILS\r |
| 51 | // modules yet and ISS is probably wrong.\r |
| 52 | // 1.03 - 2002Apr10 - numerous fixes, began to add relative/absolute support\r |
| 53 | // 1.02 - 2002Feb26 - replaced "strupr" with "upcase" for compatibility\r |
| 54 | // 1.01 - 2002Feb25 - minor compiler compatibility changes\r |
| 55 | // 1.00 - 2002Feb01 - first release. Tested only under Win32.\r |
| 56 | // ---------------------------------------------------------------------------------\r |
| 57 | //\r |
| 58 | // Usage:\r |
| 59 | // asm1130 [-bvsx] [-o[file]] [-l[file]] [-rN.M] file...\r |
| 60 | //\r |
| 61 | // Description:\r |
| 62 | // -b binary output (.bin, relocatable absolute format)\r |
| 63 | // -v verbose\r |
| 64 | // -s print symbol table\r |
| 65 | // -x print cross references\r |
| 66 | // -o output file (default is name of first source file + extension .out or .bin)\r |
| 67 | // -l listing file (default is name of first source file + extension .lst)\r |
| 68 | // -y preload system symbol table SYMBOLS.SYS (from the current directory)\r |
| 69 | // -w write the system symbol table SYMBOLS.SYS in the current directory\r |
| 70 | // -W same as -w but don't prompt to confirm overwriting existing file\r |
| 71 | // -r set DMS release to release N version M, for sbrk cards\r |
| 72 | //\r |
| 73 | // Listing and symbol table output can be turned on by *LIST directives in the source, too\r |
| 74 | // Listing file default extension is .LST\r |
| 75 | //\r |
| 76 | // Input files can use strict IBM 1130 Assembler column format, or loose formatting\r |
| 77 | // with tabs, or any mix on a line-by-line basis. Input files default extension is .ASM.\r |
| 78 | //\r |
| 79 | // Strict specification is:\r |
| 80 | //\r |
| 81 | // label columns 1 - 5\r |
| 82 | // opcode 7 - 10\r |
| 83 | // tag 12\r |
| 84 | // index 13\r |
| 85 | // arguments 15 - 51\r |
| 86 | //\r |
| 87 | // Loose, indicated by presence of ascii tab character(s):\r |
| 88 | //\r |
| 89 | // label<tab>opcode<tab>index and format indicators<tab>arguments\r |
| 90 | //\r |
| 91 | // In both cases, the IBM convention that the arguments section ends with the\r |
| 92 | // first nonblank applies. This means that ".DC 1, 2, 3" assembles only the 1!\r |
| 93 | //\r |
| 94 | // Output file format is that used by the LOAD command in my 1130\r |
| 95 | // simulator. Lines are any of the following. All values are in hex:\r |
| 96 | //\r |
| 97 | // @addr load address for subsequent words is addr\r |
| 98 | // Znwords Zero the next "nwords" and increment load address by nwords.\r |
| 99 | // =addr set IAR register to address addr (a convenience)\r |
| 100 | // value load value at load address and increment load address\r |
| 101 | //\r |
| 102 | // Output file default extension is .OUT or .BIN for binary assemblies\r |
| 103 | //\r |
| 104 | // Note: this version does not handle relative assembly, and so doesn't carry\r |
| 105 | // absolute/relative indication through expression calculation.\r |
| 106 | //\r |
| 107 | // Seems to work. Was able to assemble the resident monitor OK.\r |
| 108 | // >>> Look for "bug here" though, for things to check out.\r |
| 109 | //\r |
| 110 | // Notes:\r |
| 111 | // We assume that the computer on which the assembler runs uses ANSI floating point.\r |
| 112 | // Also, the assembly of floating point values may be incorrect on non-Intel \r |
| 113 | // architectures, this needs to be investigated.\r |
| 114 | //\r |
| 115 | // org_advanced tells whether * in an expression refers to the address AFTER the\r |
| 116 | // instruction (1 or 2 words, depending on length). This is the case for opcodes\r |
| 117 | // but not all directives.\r |
| 118 | //\r |
| 119 | // Revision History\r |
| 120 | // 16Apr02 1.03 Added sector break, relocation flag output\r |
| 121 | // 02Apr02 1.02 Fixed bug in BOSC: it CAN be a short instruction.\r |
| 122 | // Added directives for 1130 and 1800 IPL output formats\r |
| 123 | // Added conditional assembly directives\r |
| 124 | // ---------------------------------------------------------------------------------\r |
| 125 | \r |
| 126 | #include <stdio.h>\r |
| 127 | #include <string.h>\r |
| 128 | #include <stdlib.h>\r |
| 129 | #include <stdarg.h>\r |
| 130 | #include <setjmp.h>\r |
| 131 | #include <time.h>\r |
| 132 | #include <ctype.h>\r |
| 133 | #include "util_io.h"\r |
| 134 | \r |
| 135 | // ---------------------------------------------------------------1------------------\r |
| 136 | // DEFINITIONS\r |
| 137 | // ---------------------------------------------------------------------------------\r |
| 138 | \r |
| 139 | // I have found some IBM source code where @ and ' seem interchangable (likely due to the\r |
| 140 | // use of 026 keypunches).\r |
| 141 | // Comment out this define to make @ and ' different in symbol names, keep to make equivalent\r |
| 142 | \r |
| 143 | #if defined(VMS)\r |
| 144 | # include <unistd.h> /* to pick up 'unlink' */\r |
| 145 | #endif\r |
| 146 | \r |
| 147 | #define BETWEEN(v,a,b) (((v) >= (a)) && ((v) <= (b)))\r |
| 148 | #define MIN(a,b) (((a) <= (b)) ? (a) : (b))\r |
| 149 | #define MAX(a,b) (((a) >= (b)) ? (a) : (b))\r |
| 150 | \r |
| 151 | #ifndef _WIN32\r |
| 152 | int strnicmp (char *a, char *b, int n);\r |
| 153 | int strcmpi (char *a, char *b);\r |
| 154 | #endif\r |
| 155 | \r |
| 156 | #define FIX_ATS \r |
| 157 | \r |
| 158 | #define DMSVERSION "V2M12" /* required 5 characters on sector break card col 67-71 */\r |
| 159 | \r |
| 160 | #define DOLLAREXIT "/38" // hmmm, are these really fixed absolutely in all versions?\r |
| 161 | #define DOLLARDUMP "/3F"\r |
| 162 | \r |
| 163 | #define SYSTEM_TABLE "SYMBOLS.SYS"\r |
| 164 | \r |
| 165 | #define BOOL int\r |
| 166 | #define TRUE 1\r |
| 167 | #define FALSE 0\r |
| 168 | \r |
| 169 | #define ISTV 0x33 // magic number from DMS R2V12 monitorm symbol @ISTV\r |
| 170 | \r |
| 171 | #define MAXLITERALS 300\r |
| 172 | #define MAXENTRIES 14\r |
| 173 | \r |
| 174 | #define LINEFORMAT " %4ld | %s"\r |
| 175 | #define LEFT_MARGIN " |"\r |
| 176 | // XXXX XXXX XXXX XXXX XXXX XXXX\r |
| 177 | // org w1 w2 w3 w4 w5\r |
| 178 | // XXXX 1111 2222 3333 4444 LLLL |\r |
| 179 | // 12345678901234567890123456789012\r |
| 180 | \r |
| 181 | typedef enum {ABSOLUTE = 0, RELATIVE = 1, LIBF = 2, CALL = 3} RELOC;\r |
| 182 | \r |
| 183 | typedef struct tag_symbol { // symbol table entry:\r |
| 184 | char *name; // name of symbol\r |
| 185 | int value; // value (absolute)\r |
| 186 | int pass; // defined during pass #\r |
| 187 | int defined; // definition state, see #defines below\r |
| 188 | RELOC relative; // ABSOLUTE = absolute, RELATIVE = relative\r |
| 189 | struct tag_symbol *next; // next symbol in list\r |
| 190 | struct tag_xref *xrefs; // cross references\r |
| 191 | } SYMBOL, *PSYMBOL;\r |
| 192 | \r |
| 193 | #define S_UNDEFINED 0 // values of 'defined'\r |
| 194 | #define S_PROVISIONAL 1 // usually an expression with forward references\r |
| 195 | #define S_DEFINED 2 // ordering must be undef < prov < def\r |
| 196 | \r |
| 197 | typedef struct tag_xref { // cross reference entry\r |
| 198 | char *fname; // filename\r |
| 199 | int lno; // line number\r |
| 200 | BOOL definition; // true = definition, false = reference\r |
| 201 | struct tag_xref *next; // next reference\r |
| 202 | } XREF, *PXREF;\r |
| 203 | \r |
| 204 | typedef struct tag_expr { // expression result: absolute or relative\r |
| 205 | int value;\r |
| 206 | RELOC relative;\r |
| 207 | } EXPR;\r |
| 208 | \r |
| 209 | typedef enum {PROGTYPE_ABSOLUTE = 1, PROGTYPE_RELOCATABLE = 2, PROGTYPE_LIBF = 3, PROGTYPE_CALL = 4,\r |
| 210 | PROGTYPE_ISSLIBF = 5, PROGTYPE_ISSCALL = 6, PROGTYPE_ILS = 7} PROGTYPE;\r |
| 211 | \r |
| 212 | typedef enum {SUBTYPE_INCORE = 0, SUBTYPE_FORDISK = 1, SUBTYPE_ARITH = 2,\r |
| 213 | SUBTYPE_FORNONDISK = 3, SUBTYPE_FUNCTION=8} SUBTYPE;\r |
| 214 | \r |
| 215 | typedef enum {INTMODE_UNSPECIFIED = 0, INTMODE_MATCHREAL = 0x0080, INTMODE_ONEWORD = 0x0090} INTMODE;\r |
| 216 | typedef enum {REALMODE_UNSPECIFIED = 0, REALMODE_STANDARD = 0x0001, REALMODE_EXTENDED = 0x0002} REALMODE;\r |
| 217 | \r |
| 218 | #define OP_INDEXED 0x0300 // 1130 opcode modifier bits\r |
| 219 | #define OP_LONG 0x0400\r |
| 220 | #define OP_INDIRECT 0x0080\r |
| 221 | \r |
| 222 | typedef enum {OUTMODE_LOAD, OUTMODE_1130, OUTMODE_1800, OUTMODE_BINARY} OUTMODE;\r |
| 223 | \r |
| 224 | #ifdef _WIN32\r |
| 225 | # define OUTWRITEMODE "wb" // write outfile in binary mode\r |
| 226 | # define ENDLINE "\r\n" // explictly write CR/LF\r |
| 227 | #else\r |
| 228 | # define OUTWRITEMODE "w" // use native mode\r |
| 229 | # define ENDLINE "\n"\r |
| 230 | #endif\r |
| 231 | \r |
| 232 | // ---------------------------------------------------------------------------------\r |
| 233 | // GLOBALS\r |
| 234 | // ---------------------------------------------------------------------------------\r |
| 235 | \r |
| 236 | // command line syntax\r |
| 237 | char *usestr =\r |
| 238 | "Usage: asm1130 [-bpsvwxy8] [-o[file]] [-l[file]] [-rN.M] file...\n\n"\r |
| 239 | "-b binary (relocatable format) output; default is simulator LOAD format\n"\r |
| 240 | "-p count passes required; no assembly output is created with this flag"\r |
| 241 | "-s add symbol table to listing\n"\r |
| 242 | "-v verbose mode\n"\r |
| 243 | "-w write system symbol table as SYMBOLS.SYS\n"\r |
| 244 | "-W same as -w but do not confirm overwriting previous file\n"\r |
| 245 | "-x add cross reference table to listing\n"\r |
| 246 | "-y preload system symbol table SYMBOLS.SYS\n"\r |
| 247 | "-o set output file; default is first input file + .out or .bin\n"\r |
| 248 | "-l create listing file; default is first input file + .lst\n"\r |
| 249 | "-r set dms version to VN RM for system SBRK cards\n"\r |
| 250 | "-8 enable IBM 1800 instructions"; // (alternately, rename or link executable to asm1800.exe)\r |
| 251 | \r |
| 252 | BOOL verbose = FALSE; // verbose mode flag\r |
| 253 | BOOL tabformat = FALSE; // TRUE if tabs were seen in the file\r |
| 254 | BOOL enable_1800 = FALSE; // TRUE if 1800 mode is enabled by flag or executable name\r |
| 255 | int pass; // current assembler pass (1 or 2)\r |
| 256 | char curfn[256]; // current input file name\r |
| 257 | char progname[8]; // base name of primary input file\r |
| 258 | char *outfn = NULL; // output file name\r |
| 259 | int lno; // current input file line number\r |
| 260 | BOOL preload = FALSE; // preload system symbol table\r |
| 261 | BOOL savetable = FALSE; // write system symbol table\r |
| 262 | BOOL saveprompt = TRUE; // prompt before overwriting\r |
| 263 | int nerrors = 0; // count of errors\r |
| 264 | int nwarnings = 0; // count of warnings\r |
| 265 | FILE *fin = NULL; // current input file\r |
| 266 | FILE *fout = NULL; // output file stream\r |
| 267 | OUTMODE outmode = OUTMODE_LOAD; // output file mode\r |
| 268 | int outcols = 0; // columns written in using card output\r |
| 269 | int maxiplcols = 80;\r |
| 270 | char cardid[9]; // characters used for IPL card ID\r |
| 271 | FILE *flist = NULL; // listing file stream\r |
| 272 | char *listfn = NULL; // listing filename\r |
| 273 | BOOL do_list = FALSE; // flag: create listing\r |
| 274 | BOOL passcount = FALSE; // flag: count passes only\r |
| 275 | BOOL list_on = TRUE; // listing is currently enabled\r |
| 276 | BOOL do_xref = FALSE; // cross reference listing\r |
| 277 | BOOL do_syms = FALSE; // symbol table listing\r |
| 278 | BOOL ended = FALSE; // end of current file\r |
| 279 | BOOL hasforward = FALSE; // true if there are any forward references\r |
| 280 | char listline[350]; // output listing line\r |
| 281 | BOOL line_error; // already saw an error on current line\r |
| 282 | RELOC relocate = RELATIVE; // relocatable assembly mode\r |
| 283 | BOOL assembled = FALSE; // true if any output has been generated\r |
| 284 | int nwout; // number of words written on current line\r |
| 285 | int org = 0; // output address (origin)\r |
| 286 | int org_advanced; // if TRUE, * means instruction addr+(value) during evaluation\r |
| 287 | int pta = -1; // program transfer address\r |
| 288 | BOOL cexpr = FALSE; // "C" expression syntax\r |
| 289 | PSYMBOL symbols = NULL; // the symbol table (linear search)\r |
| 290 | BOOL check_control = TRUE; // check for control cards\r |
| 291 | PROGTYPE progtype = PROGTYPE_RELOCATABLE; // program type\r |
| 292 | INTMODE intmode = INTMODE_UNSPECIFIED; // integer mode\r |
| 293 | REALMODE realmode = REALMODE_UNSPECIFIED; // real mode\r |
| 294 | int nintlevels = 0; // # of interrupt levels for ISS\r |
| 295 | int intlevel_primary = 0; // primary level for ISS and level for ILS\r |
| 296 | int intlevel_secondary = 0; // secondary level for ISS\r |
| 297 | int iss_number = 0; // ISS number\r |
| 298 | PSYMBOL entry[MAXENTRIES]; // entries for subroutines\r |
| 299 | int nentries = 0;\r |
| 300 | int ndefined_files = 0;\r |
| 301 | \r |
| 302 | struct lit { // accumulated literals waiting to be output\r |
| 303 | int value; // constant value\r |
| 304 | int tagno; // constant symbol tag number (e.g. _L001)\r |
| 305 | BOOL hex; // constant was expressed in hex\r |
| 306 | BOOL even; // constant was operand of a double-width instruction (e.g. AD)\r |
| 307 | } literal[MAXLITERALS];\r |
| 308 | \r |
| 309 | int n_literals = 0, lit_tag = 0;\r |
| 310 | BOOL requires_even_address; // target of current instruction\r |
| 311 | BOOL dmes_saved; // odd character left over from dmes ending in '\r |
| 312 | int dmes_savew;\r |
| 313 | char opfield[256]; // extracted operand field from source line\r |
| 314 | char dmsversion[12] = DMSVERSION; // version number for SBRK cards\r |
| 315 | const char whitespace[] = " \t"; // whitespace\r |
| 316 | \r |
| 317 | int ascii_to_ebcdic_table[128] = \r |
| 318 | {\r |
| 319 | //\r |
| 320 | 0x00,0x01,0x02,0x03,0x37,0x2d,0x2e,0x2f, 0x16,0x05,0x25,0x0b,0x0c,0x0d,0x0e,0x0f,\r |
| 321 | //\r |
| 322 | 0x10,0x11,0x12,0x13,0x3c,0x3d,0x32,0x26, 0x18,0x19,0x3f,0x27,0x1c,0x1d,0x1e,0x1f,\r |
| 323 | // spac ! " # $ % & ' ( ) * + , - . /\r |
| 324 | 0x40,0x5a,0x7f,0x7b,0x5b,0x6c,0x50,0x7d, 0x4d,0x5d,0x5c,0x4e,0x6b,0x60,0x4b,0x61,\r |
| 325 | // 0 1 2 3 4 5 6 7 8 9 : ; < = > ?\r |
| 326 | 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7, 0xf8,0xf9,0x7a,0x5e,0x4c,0x7e,0x6e,0x6f,\r |
| 327 | // @ A B C D E F G H I J K L M N O\r |
| 328 | 0x7c,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7, 0xc8,0xc9,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,\r |
| 329 | // P Q R S T U V W X Y Z [ \ ] & _\r |
| 330 | 0xd7,0xd8,0xd9,0xe2,0xe3,0xe4,0xe5,0xe6, 0xe7,0xe8,0xe9,0xba,0xe0,0xbb,0xb0,0x6d,\r |
| 331 | // a b c d e f g h i j k l m n o\r |
| 332 | 0x79,0x81,0x82,0x83,0x84,0x85,0x86,0x87, 0x88,0x89,0x91,0x92,0x93,0x94,0x95,0x96,\r |
| 333 | // p q r s t u v w x y z { | } ~\r |
| 334 | 0x97,0x98,0x99,0xa2,0xa3,0xa4,0xa5,0xa6, 0xa7,0xa8,0xa9,0xc0,0x4f,0xd0,0xa1,0x07,\r |
| 335 | };\r |
| 336 | \r |
| 337 | int ascii_to_1403_table[128] = \r |
| 338 | { /* 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f */\r |
| 339 | 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,\r |
| 340 | 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f, 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,\r |
| 341 | 0x7f,0x7f,0x7f,0x7f,0x62,0x7f,0x15,0x0b, 0x57,0x2f,0x23,0x6d,0x16,0x61,0x6e,0x4c,\r |
| 342 | 0x49,0x40,0x01,0x02,0x43,0x04,0x45,0x46, 0x07,0x08,0x7f,0x7f,0x7f,0x4a,0x7f,0x7f,\r |
| 343 | 0x7f,0x64,0x25,0x26,0x67,0x68,0x29,0x2a, 0x6b,0x2c,0x58,0x19,0x1a,0x5b,0x1c,0x5d,\r |
| 344 | 0x5e,0x1f,0x20,0x0d,0x0e,0x4f,0x10,0x51, 0x52,0x13,0x54,0x7f,0x7f,0x7f,0x7f,0x7f,\r |
| 345 | 0x7f,0x64,0x25,0x26,0x67,0x68,0x29,0x2a, 0x6b,0x2c,0x58,0x19,0x1a,0x5b,0x1c,0x5d,\r |
| 346 | 0x5e,0x1f,0x20,0x0d,0x0e,0x4f,0x10,0x51, 0x52,0x13,0x54,0x7f,0x7f,0x7f,0x7f,0x7f\r |
| 347 | };\r |
| 348 | \r |
| 349 | #include "../ibm1130_conout.h" /* conout_to_ascii_table */\r |
| 350 | #include "../ibm1130_prtwheel.h" /* 1132 printer printwheel data */\r |
| 351 | \r |
| 352 | // ---------------------------------------------------------------------------------\r |
| 353 | // PROTOTYPES\r |
| 354 | // ---------------------------------------------------------------------------------\r |
| 355 | \r |
| 356 | void init (int argc, char **argv);\r |
| 357 | void bail (char *msg);\r |
| 358 | void flag (char *arg);\r |
| 359 | void proc (char *fname);\r |
| 360 | void startpass (int n);\r |
| 361 | void errprintf (char *fmt, ...);\r |
| 362 | void asm_error (char *fmt, ...);\r |
| 363 | void asm_warning (char *fmt, ...);\r |
| 364 | char *astring (char *str);\r |
| 365 | PSYMBOL lookup_symbol (char *name, BOOL define);\r |
| 366 | void add_xref (PSYMBOL s, BOOL definition);\r |
| 367 | int get_symbol (char *name);\r |
| 368 | void set_symbol (char *name, int value, int known, RELOC relative);\r |
| 369 | char * gtok (char **pc, char *tok);\r |
| 370 | char *skipbl (char *c);\r |
| 371 | void sym_list (void);\r |
| 372 | void xref_list (void);\r |
| 373 | void listhdr (void);\r |
| 374 | int getexpr (char *pc, BOOL undefined_ok, EXPR *expr);\r |
| 375 | void passreport (void);\r |
| 376 | void listout (BOOL reset);\r |
| 377 | void output_literals (BOOL eof);\r |
| 378 | char *upcase (char *str);\r |
| 379 | void prep_line (char *line);\r |
| 380 | int ascii_to_hollerith (int ch);\r |
| 381 | char *detab (char *str);\r |
| 382 | void preload_symbols (void);\r |
| 383 | void save_symbols (void);\r |
| 384 | void bincard_init (void);\r |
| 385 | void bincard_writecard (char *sbrk_text);\r |
| 386 | void bincard_writedata (void);\r |
| 387 | void bincard_flush (void);\r |
| 388 | void bincard_sbrk (char *line);\r |
| 389 | void bincard_setorg (int neworg);\r |
| 390 | void bincard_writew (int word, RELOC relative);\r |
| 391 | void bincard_endcard (void);\r |
| 392 | void handle_sbrk (char *line);\r |
| 393 | void bincard_typecard (void);\r |
| 394 | void namecode (unsigned short *words, char *tok);\r |
| 395 | int signextend (int v);\r |
| 396 | \r |
| 397 | // ---------------------------------------------------------------------------------\r |
| 398 | // main routine\r |
| 399 | // ---------------------------------------------------------------------------------\r |
| 400 | \r |
| 401 | int main (int argc, char **argv)\r |
| 402 | {\r |
| 403 | int i, sawfile = FALSE;\r |
| 404 | \r |
| 405 | init(argc, argv); // initialize, process flags\r |
| 406 | \r |
| 407 | startpass(1); // first pass, process files \r |
| 408 | \r |
| 409 | for (i = 1; i < argc; i++)\r |
| 410 | if (*argv[i] != '-')\r |
| 411 | proc(argv[i]), sawfile = TRUE;\r |
| 412 | \r |
| 413 | if (! sawfile) // should have seen at least one file\r |
| 414 | bail(usestr);\r |
| 415 | \r |
| 416 | if (passcount) {\r |
| 417 | passreport();\r |
| 418 | return 0;\r |
| 419 | }\r |
| 420 | \r |
| 421 | startpass(2); // second pass, process files again\r |
| 422 | \r |
| 423 | for (i = 1; i < argc; i++)\r |
| 424 | if (*argv[i] != '-')\r |
| 425 | proc(argv[i]);\r |
| 426 | \r |
| 427 | if (outmode == OUTMODE_LOAD) {\r |
| 428 | if (pta >= 0) // write start address to the load file\r |
| 429 | fprintf(fout, "=%04x" ENDLINE, pta & 0xFFFF);\r |
| 430 | }\r |
| 431 | else \r |
| 432 | bincard_endcard();\r |
| 433 | \r |
| 434 | if (flist) {\r |
| 435 | if (nerrors || nwarnings) { // summarize (or summarise)\r |
| 436 | if (nerrors == 0)\r |
| 437 | fprintf(flist, "There %s ", (nwarnings == 1) ? "was" : "were");\r |
| 438 | else\r |
| 439 | fprintf(flist, "\nThere %s %d error%s %s",\r |
| 440 | (nerrors == 1) ? "was" : "were", nerrors, (nerrors == 1) ? "" : "s", nwarnings ? "and " : "");\r |
| 441 | \r |
| 442 | if (nwarnings > 0)\r |
| 443 | fprintf(flist, "%d warning%s ", nwarnings, (nwarnings == 1) ? "" : "s");\r |
| 444 | \r |
| 445 | fprintf(flist, "in this assembly\n");\r |
| 446 | }\r |
| 447 | else\r |
| 448 | fprintf(flist, "\nThere were no errors in this assembly\n"); \r |
| 449 | }\r |
| 450 | \r |
| 451 | if (flist) { // finish the listing\r |
| 452 | if (pta >= 0)\r |
| 453 | fprintf(flist, "\nProgram transfer address = %04x\n", pta);\r |
| 454 | \r |
| 455 | if (do_xref)\r |
| 456 | xref_list();\r |
| 457 | else if (do_syms)\r |
| 458 | sym_list();\r |
| 459 | }\r |
| 460 | \r |
| 461 | if (savetable)\r |
| 462 | save_symbols();\r |
| 463 | \r |
| 464 | return 0; // all done\r |
| 465 | }\r |
| 466 | \r |
| 467 | // ---------------------------------------------------------------------------------\r |
| 468 | // init - initialize assembler, process command line flags\r |
| 469 | // ---------------------------------------------------------------------------------\r |
| 470 | \r |
| 471 | void init (int argc, char **argv)\r |
| 472 | {\r |
| 473 | int i;\r |
| 474 | \r |
| 475 | enable_1800 = strstr(argv[0], "1800") != NULL; // if "1800" appears in the executable name, enable 1800 extensions\r |
| 476 | \r |
| 477 | for (i = 1; i < argc; i++) // process command line switches\r |
| 478 | if (*argv[i] == '-')\r |
| 479 | flag(argv[i]+1);\r |
| 480 | }\r |
| 481 | \r |
| 482 | // ---------------------------------------------------------------------------------\r |
| 483 | // flag - process one command line switch\r |
| 484 | // ---------------------------------------------------------------------------------\r |
| 485 | \r |
| 486 | void flag (char *arg)\r |
| 487 | {\r |
| 488 | int major, minor;\r |
| 489 | \r |
| 490 | while (*arg) {\r |
| 491 | switch (*arg++) {\r |
| 492 | case 'o': // output (load) file name\r |
| 493 | if (! *arg)\r |
| 494 | bail(usestr);\r |
| 495 | outfn = arg;\r |
| 496 | return;\r |
| 497 | \r |
| 498 | case 'p':\r |
| 499 | passcount = TRUE;\r |
| 500 | break;\r |
| 501 | \r |
| 502 | case 'v': // mumble while running\r |
| 503 | verbose = TRUE;\r |
| 504 | break;\r |
| 505 | \r |
| 506 | case 'x': // print cross reference table\r |
| 507 | do_xref = TRUE;\r |
| 508 | break;\r |
| 509 | \r |
| 510 | case 's': // print symbol table\r |
| 511 | do_syms = TRUE;\r |
| 512 | break;\r |
| 513 | \r |
| 514 | case 'l': // listing file name\r |
| 515 | listfn = (* arg) ? arg : NULL;\r |
| 516 | do_list = TRUE;\r |
| 517 | return;\r |
| 518 | \r |
| 519 | case 'W':\r |
| 520 | saveprompt = FALSE;\r |
| 521 | // fall through\r |
| 522 | case 'w':\r |
| 523 | savetable = TRUE;\r |
| 524 | break;\r |
| 525 | \r |
| 526 | case 'y':\r |
| 527 | preload = TRUE;\r |
| 528 | break;\r |
| 529 | \r |
| 530 | case 'b':\r |
| 531 | outmode = OUTMODE_BINARY;\r |
| 532 | break;\r |
| 533 | \r |
| 534 | case '8':\r |
| 535 | enable_1800 = TRUE;\r |
| 536 | break;\r |
| 537 | \r |
| 538 | case 'r':\r |
| 539 | if (sscanf(arg, "%d.%d", &major, &minor) != 2)\r |
| 540 | bail(usestr);\r |
| 541 | sprintf(dmsversion, "V%01.1dM%02.2d", major, minor);\r |
| 542 | return;\r |
| 543 | \r |
| 544 | default:\r |
| 545 | bail(usestr);\r |
| 546 | break;\r |
| 547 | }\r |
| 548 | }\r |
| 549 | }\r |
| 550 | \r |
| 551 | // ---------------------------------------------------------------------------------\r |
| 552 | // bail - print error message on stderr (only) and exit\r |
| 553 | // ---------------------------------------------------------------------------------\r |
| 554 | \r |
| 555 | void bail (char *msg)\r |
| 556 | {\r |
| 557 | fprintf(stderr, "%s\n", msg);\r |
| 558 | exit(1);\r |
| 559 | }\r |
| 560 | \r |
| 561 | // ---------------------------------------------------------------------------------\r |
| 562 | // errprintf - print error message to stderr\r |
| 563 | // ---------------------------------------------------------------------------------\r |
| 564 | \r |
| 565 | void errprintf (char *fmt, ...)\r |
| 566 | {\r |
| 567 | va_list args;\r |
| 568 | \r |
| 569 | va_start(args, fmt); // get pointer to argument list\r |
| 570 | \r |
| 571 | vfprintf(stderr, fmt, args); // write errors to terminal (stderr)\r |
| 572 | \r |
| 573 | va_end(args);\r |
| 574 | }\r |
| 575 | \r |
| 576 | // ---------------------------------------------------------------------------------\r |
| 577 | // asm_error - report an error to listing file and to user's console\r |
| 578 | // ---------------------------------------------------------------------------------\r |
| 579 | \r |
| 580 | void asm_error (char *fmt, ...)\r |
| 581 | {\r |
| 582 | va_list args;\r |
| 583 | \r |
| 584 | if (pass == 1) // only print on pass 2\r |
| 585 | return;\r |
| 586 | \r |
| 587 | va_start(args, fmt); // get pointer to argument list\r |
| 588 | \r |
| 589 | fprintf(stderr, "E: %s (%d): ", curfn, lno);\r |
| 590 | vfprintf(stderr, fmt, args); // write errors to terminal (stderr)\r |
| 591 | putc('\n', stderr);\r |
| 592 | \r |
| 593 | if (flist != NULL && list_on) {\r |
| 594 | listout(FALSE);\r |
| 595 | line_error = TRUE;\r |
| 596 | \r |
| 597 | fprintf(flist, "**** Error: ");\r |
| 598 | vfprintf(flist, fmt, args); // write errors to listing file\r |
| 599 | putc('\n', flist);\r |
| 600 | }\r |
| 601 | \r |
| 602 | nerrors++;\r |
| 603 | va_end(args);\r |
| 604 | }\r |
| 605 | \r |
| 606 | // ---------------------------------------------------------------------------------\r |
| 607 | // asm_warning - same but warnings are not counted\r |
| 608 | // ---------------------------------------------------------------------------------\r |
| 609 | \r |
| 610 | void asm_warning (char *fmt, ...)\r |
| 611 | {\r |
| 612 | va_list args;\r |
| 613 | \r |
| 614 | if (pass == 1) // only print on pass 2\r |
| 615 | return;\r |
| 616 | \r |
| 617 | va_start(args, fmt); // get pointer to argument list\r |
| 618 | \r |
| 619 | fprintf(stderr, "W: %s (%d): ", curfn, lno);\r |
| 620 | vfprintf(stderr, fmt, args); // write errors to terminal (stderr)\r |
| 621 | putc('\n', stderr);\r |
| 622 | \r |
| 623 | if (flist != NULL && list_on) {\r |
| 624 | listout(FALSE);\r |
| 625 | line_error = TRUE;\r |
| 626 | \r |
| 627 | fprintf(flist, "**** Warning: ");\r |
| 628 | vfprintf(flist, fmt, args); // write errors to listing file\r |
| 629 | putc('\n', flist);\r |
| 630 | }\r |
| 631 | \r |
| 632 | nwarnings++;\r |
| 633 | }\r |
| 634 | \r |
| 635 | // ---------------------------------------------------------------------------------\r |
| 636 | // sym_list - print the symbol table\r |
| 637 | // ---------------------------------------------------------------------------------\r |
| 638 | \r |
| 639 | void sym_list (void)\r |
| 640 | {\r |
| 641 | PSYMBOL s;\r |
| 642 | int n = 5;\r |
| 643 | \r |
| 644 | if (symbols == NULL || flist == NULL)\r |
| 645 | return;\r |
| 646 | \r |
| 647 | fprintf(flist, "\n=== SYMBOL TABLE ==============================================================\n");\r |
| 648 | \r |
| 649 | for (s = symbols, n = 0; s != NULL; s = s->next) {\r |
| 650 | if (n >= 5) {\r |
| 651 | putc('\n', flist);\r |
| 652 | n = 0;\r |
| 653 | }\r |
| 654 | else if (n > 0)\r |
| 655 | fprintf(flist, " ");\r |
| 656 | \r |
| 657 | fprintf(flist, "%-6s ", s->name);\r |
| 658 | if (s->defined == S_DEFINED)\r |
| 659 | fprintf(flist, "%04x%s", s->value & 0xFFFF, s->relative ? "R" : " ");\r |
| 660 | else\r |
| 661 | fprintf(flist, "UUUU ");\r |
| 662 | \r |
| 663 | n++;\r |
| 664 | }\r |
| 665 | fprintf(flist, "\n");\r |
| 666 | }\r |
| 667 | \r |
| 668 | // ---------------------------------------------------------------------------------\r |
| 669 | // passreport - report # of passes required for assembly on the 1130\r |
| 670 | // ---------------------------------------------------------------------------------\r |
| 671 | \r |
| 672 | void passreport (void)\r |
| 673 | {\r |
| 674 | PSYMBOL s;\r |
| 675 | \r |
| 676 | for (s = symbols; s != NULL; s = s->next) {\r |
| 677 | if (s->defined == S_UNDEFINED || s->defined == S_PROVISIONAL) {\r |
| 678 | printf("There are undefined symbols. Cannot determine pass requirement.\n");\r |
| 679 | return;\r |
| 680 | }\r |
| 681 | }\r |
| 682 | \r |
| 683 | if (hasforward)\r |
| 684 | printf("There are forward references. Two passes are required.\n");\r |
| 685 | else\r |
| 686 | printf("There are no forward references. Only one pass is required.\n");\r |
| 687 | }\r |
| 688 | \r |
| 689 | // ---------------------------------------------------------------------------------\r |
| 690 | // xref_list - print the cross-reference table\r |
| 691 | // ---------------------------------------------------------------------------------\r |
| 692 | \r |
| 693 | void xref_list (void)\r |
| 694 | {\r |
| 695 | int n = 0;\r |
| 696 | PXREF x;\r |
| 697 | PSYMBOL s;\r |
| 698 | \r |
| 699 | if (flist == NULL || symbols == NULL)\r |
| 700 | return;\r |
| 701 | \r |
| 702 | fprintf(flist, "\n=== CROSS REFERENCES ==========================================================\n");\r |
| 703 | \r |
| 704 | if (symbols == NULL || flist == NULL)\r |
| 705 | return;\r |
| 706 | \r |
| 707 | fprintf(flist, "Name Val Defd Referenced\n");\r |
| 708 | \r |
| 709 | for (s = symbols; s != NULL; s = s->next) {\r |
| 710 | fprintf(flist, "%-5s %04x%s", s->name, s->value & 0xFFFF, s->relative ? "R" : " ");\r |
| 711 | \r |
| 712 | for (x = s->xrefs; x != NULL; x = x->next)\r |
| 713 | if (x->definition)\r |
| 714 | break;\r |
| 715 | \r |
| 716 | if (x == NULL)\r |
| 717 | fprintf(flist, "----");\r |
| 718 | else\r |
| 719 | fprintf(flist, " %4d", x->lno);\r |
| 720 | \r |
| 721 | for (n = 0, x = s->xrefs; x != NULL; x = x->next) {\r |
| 722 | if (x->definition)\r |
| 723 | continue;\r |
| 724 | \r |
| 725 | if (n >= 12) {\r |
| 726 | n = 0;\r |
| 727 | fprintf(flist, "\n ");\r |
| 728 | }\r |
| 729 | fprintf(flist, " %4d", x->lno);\r |
| 730 | n++;\r |
| 731 | } \r |
| 732 | putc('\n', flist);\r |
| 733 | }\r |
| 734 | }\r |
| 735 | \r |
| 736 | // ---------------------------------------------------------------------------------\r |
| 737 | // listhdr - print a banner header in the listing file. Since it's not paginated\r |
| 738 | // at this time, this is not used often.\r |
| 739 | // ---------------------------------------------------------------------------------\r |
| 740 | \r |
| 741 | void listhdr (void)\r |
| 742 | {\r |
| 743 | time_t t;\r |
| 744 | \r |
| 745 | time(&t);\r |
| 746 | fprintf(flist, "%s -- %s -- %s\n", VERSION, dmsversion, ctime(&t));\r |
| 747 | }\r |
| 748 | \r |
| 749 | // ---------------------------------------------------------------------------------\r |
| 750 | // astring - allocate a copy of a string\r |
| 751 | // ---------------------------------------------------------------------------------\r |
| 752 | \r |
| 753 | char *astring (char *str)\r |
| 754 | {\r |
| 755 | static char *s = NULL;\r |
| 756 | \r |
| 757 | if (s != NULL)\r |
| 758 | if (strcmp(s, str) == 0) // if same as immediately previous allocation\r |
| 759 | return s; // return same pointer (why did I do this?)\r |
| 760 | \r |
| 761 | if ((s = malloc(strlen(str)+1)) == NULL)\r |
| 762 | bail("out of memory");\r |
| 763 | \r |
| 764 | strcpy(s, str);\r |
| 765 | return s;\r |
| 766 | }\r |
| 767 | \r |
| 768 | // ---------------------------------------------------------------------------------\r |
| 769 | // lookup_symbol - get pointer to a symbol.\r |
| 770 | // If define is TRUE, creates and marks 'undefined' if not previously defined.\r |
| 771 | // ---------------------------------------------------------------------------------\r |
| 772 | \r |
| 773 | PSYMBOL lookup_symbol (char *name, BOOL define)\r |
| 774 | {\r |
| 775 | PSYMBOL s, n, prv = NULL;\r |
| 776 | int c;\r |
| 777 | char *at;\r |
| 778 | \r |
| 779 | if (strlen(name) > 5) { // (sigh)\r |
| 780 | asm_error("Symbol '%s' is longer than 5 letters", name);\r |
| 781 | name[5] = '\0';\r |
| 782 | }\r |
| 783 | \r |
| 784 | #ifdef FIX_ATS\r |
| 785 | while ((at = strchr(name, '@')) != NULL)\r |
| 786 | *at = '\'';\r |
| 787 | #endif\r |
| 788 | // search sorted list of symbols\r |
| 789 | for (s = symbols; s != NULL; prv = s, s = s->next) {\r |
| 790 | c = strcmpi(s->name, name);\r |
| 791 | if (c == 0)\r |
| 792 | return s;\r |
| 793 | if (c > 0)\r |
| 794 | break;\r |
| 795 | }\r |
| 796 | \r |
| 797 | if (! define)\r |
| 798 | return NULL; // not found\r |
| 799 | \r |
| 800 | if ((n = malloc(sizeof(SYMBOL))) == NULL)\r |
| 801 | bail("out of memory");\r |
| 802 | \r |
| 803 | n->name = astring(name); // symbol was undefined -- add it now\r |
| 804 | n->value = 0;\r |
| 805 | n->defined = FALSE;\r |
| 806 | n->xrefs = NULL;\r |
| 807 | n->defined = FALSE;\r |
| 808 | \r |
| 809 | n->next = s; // link in alpha order\r |
| 810 | \r |
| 811 | if (prv == NULL) // we stopped before first item in list\r |
| 812 | symbols = n;\r |
| 813 | else\r |
| 814 | prv->next = n; // insert after item before place we stopped\r |
| 815 | \r |
| 816 | return n;\r |
| 817 | }\r |
| 818 | \r |
| 819 | // ---------------------------------------------------------------------------------\r |
| 820 | // add_xref - add a cross reference entry to a symbol\r |
| 821 | // ---------------------------------------------------------------------------------\r |
| 822 | \r |
| 823 | void add_xref (PSYMBOL s, BOOL definition)\r |
| 824 | {\r |
| 825 | PXREF x, prv = NULL, n;\r |
| 826 | \r |
| 827 | if (pass == 1 || ! do_xref) // define only during 2nd pass and only if listing was requested\r |
| 828 | return;\r |
| 829 | \r |
| 830 | for (x = s->xrefs; x != NULL; prv = x, x = x->next)\r |
| 831 | if (strcmpi(x->fname, curfn) == 0 && x->lno == lno)\r |
| 832 | return; // ignore multiple refs on same line\r |
| 833 | \r |
| 834 | if ((n = malloc(sizeof(XREF))) == NULL)\r |
| 835 | bail("out of memory");\r |
| 836 | \r |
| 837 | n->fname = astring(curfn);\r |
| 838 | n->lno = lno;\r |
| 839 | n->definition = definition;\r |
| 840 | \r |
| 841 | n->next = x; // link at end of existing list\r |
| 842 | \r |
| 843 | if (prv == NULL)\r |
| 844 | s->xrefs = n;\r |
| 845 | else\r |
| 846 | prv->next = n;\r |
| 847 | }\r |
| 848 | \r |
| 849 | // ---------------------------------------------------------------------------------\r |
| 850 | // get_symbol - get a symbol value, defining if necessary\r |
| 851 | // ---------------------------------------------------------------------------------\r |
| 852 | \r |
| 853 | int get_symbol (char *name) \r |
| 854 | {\r |
| 855 | PSYMBOL s;\r |
| 856 | \r |
| 857 | s = lookup_symbol(name, TRUE); // lookup, define if necessary\r |
| 858 | \r |
| 859 | if (pass == 2) // should be defined by now\r |
| 860 | if (! s->defined)\r |
| 861 | asm_error("Symbol '%s' is undefined", name);\r |
| 862 | \r |
| 863 | add_xref(s, FALSE); // note the reference\r |
| 864 | \r |
| 865 | return s->value; \r |
| 866 | }\r |
| 867 | \r |
| 868 | // ---------------------------------------------------------------------------------\r |
| 869 | // set_symbol - set a symbol value. Known = TRUE means we really know the value;\r |
| 870 | // FALSE means we're calculating it with forward referenced values or something like\r |
| 871 | // that.\r |
| 872 | // ---------------------------------------------------------------------------------\r |
| 873 | \r |
| 874 | void set_symbol (char *name, int value, int known, RELOC relative) \r |
| 875 | {\r |
| 876 | PSYMBOL s;\r |
| 877 | char *at;\r |
| 878 | \r |
| 879 | if (strlen(name) > 5) {\r |
| 880 | asm_error("Symbol '%s' is longer than 5 letters", name);\r |
| 881 | name[5] = '\0';\r |
| 882 | }\r |
| 883 | \r |
| 884 | #ifdef FIX_ATS\r |
| 885 | while ((at = strchr(name, '@')) != NULL)\r |
| 886 | *at = '\'';\r |
| 887 | #endif\r |
| 888 | \r |
| 889 | s = lookup_symbol(name, TRUE);\r |
| 890 | \r |
| 891 | if (s->defined == S_DEFINED) // once defined, it should not change\r |
| 892 | if (s->value != value)\r |
| 893 | asm_error("Symbol '%s' %s", name, (s->pass == pass) ? "is multiply defined" : "changed between passes");\r |
| 894 | \r |
| 895 | s->value = value;\r |
| 896 | s->relative = relative;\r |
| 897 | s->defined = known ? S_DEFINED : S_PROVISIONAL;\r |
| 898 | s->pass = pass;\r |
| 899 | \r |
| 900 | if (! known)\r |
| 901 | hasforward = TRUE;\r |
| 902 | \r |
| 903 | add_xref(s, TRUE); // record the place of definition\r |
| 904 | }\r |
| 905 | \r |
| 906 | // ---------------------------------------------------------------------------------\r |
| 907 | // skipbl - return pointer to first nonblank character in string s\r |
| 908 | // ---------------------------------------------------------------------------------\r |
| 909 | \r |
| 910 | char *skipbl (char *s)\r |
| 911 | {\r |
| 912 | while (*s && *s <= ' ')\r |
| 913 | s++;\r |
| 914 | \r |
| 915 | return s;\r |
| 916 | }\r |
| 917 | \r |
| 918 | // ---------------------------------------------------------------------------------\r |
| 919 | // gtok - extracts a whitespace-delimited token from the string pointed to by *pc;\r |
| 920 | // stores the token into the buffer tok and returns pointer to same. Returns NULL\r |
| 921 | // when there are no tokens. Best to call repeatedly with a pointer to the source\r |
| 922 | // buffer, e.g.\r |
| 923 | // char *pbuf = buf;\r |
| 924 | // while (gtok(&pbuf, token) != NULL) ...\r |
| 925 | // ---------------------------------------------------------------------------------\r |
| 926 | \r |
| 927 | char * gtok (char **pc, char *tok)\r |
| 928 | {\r |
| 929 | char *s = *pc, *otok = tok;\r |
| 930 | \r |
| 931 | while (*s && *s <= ' ') // skip blanks\r |
| 932 | s++;\r |
| 933 | \r |
| 934 | if (! *s) { // no tokens to be found\r |
| 935 | *tok = '\0';\r |
| 936 | *pc = s;\r |
| 937 | return NULL;\r |
| 938 | }\r |
| 939 | \r |
| 940 | while (*s > ' ') // save nonblanks into 'tok'\r |
| 941 | *tok++ = *s++;\r |
| 942 | \r |
| 943 | *tok = '\0'; // terminate\r |
| 944 | *pc = s; // adjust caller's pointer\r |
| 945 | \r |
| 946 | return otok; // return pointer to token\r |
| 947 | }\r |
| 948 | \r |
| 949 | // listing format:\r |
| 950 | //\r |
| 951 | // ADDR CODE SOURCE\r |
| 952 | // 0000 0000 0000 0000 0000 | XXXXXXXXXXXXXXXXX\r |
| 953 | \r |
| 954 | // ---------------------------------------------------------------------------------\r |
| 955 | // trim - remove trailing whitespace from string s\r |
| 956 | // ---------------------------------------------------------------------------------\r |
| 957 | \r |
| 958 | char *trim (char *s)\r |
| 959 | {\r |
| 960 | char *os = s, *nb;\r |
| 961 | \r |
| 962 | for (nb = s-1; *s; s++)\r |
| 963 | if (*s > ' ')\r |
| 964 | nb = s;\r |
| 965 | \r |
| 966 | nb[1] = '\0';\r |
| 967 | return os;\r |
| 968 | }\r |
| 969 | \r |
| 970 | // ---------------------------------------------------------------------------------\r |
| 971 | // listout - emit current constructed output listing line held in "listline" and\r |
| 972 | // if "reset" is true, prepare listline for second and subsequent listing lines\r |
| 973 | // for a given input statement.\r |
| 974 | // ---------------------------------------------------------------------------------\r |
| 975 | \r |
| 976 | void listout (BOOL reset)\r |
| 977 | {\r |
| 978 | if (flist && list_on && ! line_error) {\r |
| 979 | trim(listline);\r |
| 980 | fputs(listline, flist);\r |
| 981 | putc('\n', flist);\r |
| 982 | if (reset)\r |
| 983 | sprintf(listline, LEFT_MARGIN, org);\r |
| 984 | }\r |
| 985 | }\r |
| 986 | \r |
| 987 | // ---------------------------------------------------------------------------------\r |
| 988 | // storew - store a word in the output medium (hex or binary file). Most of the time\r |
| 989 | // writew is used. Advances the origin!\r |
| 990 | // ---------------------------------------------------------------------------------\r |
| 991 | \r |
| 992 | void storew (int word, RELOC relative)\r |
| 993 | {\r |
| 994 | if (pass == 2) { // save in output (load) file.\r |
| 995 | switch (outmode) {\r |
| 996 | case OUTMODE_BINARY:\r |
| 997 | bincard_writew(word, relative);\r |
| 998 | break;\r |
| 999 | \r |
| 1000 | case OUTMODE_LOAD:\r |
| 1001 | fprintf(fout, " %04x%s" ENDLINE, word & 0xFFFF,\r |
| 1002 | (relative == ABSOLUTE) ? "" : (relative == RELATIVE) ? "R" :\r |
| 1003 | (relative == LIBF) ? "L" : (relative == CALL) ? "$" : "?");\r |
| 1004 | break;\r |
| 1005 | \r |
| 1006 | default:\r |
| 1007 | bail("in storew, can't happen");\r |
| 1008 | }\r |
| 1009 | }\r |
| 1010 | \r |
| 1011 | if (relative != LIBF)\r |
| 1012 | org++;\r |
| 1013 | \r |
| 1014 | assembled = TRUE; // remember that we wrote something\r |
| 1015 | }\r |
| 1016 | \r |
| 1017 | // ---------------------------------------------------------------------------------\r |
| 1018 | // setw - store a word value in the current listing output line in position 'pos'.\r |
| 1019 | // ---------------------------------------------------------------------------------\r |
| 1020 | \r |
| 1021 | void setw (int pos, int word, RELOC relative)\r |
| 1022 | {\r |
| 1023 | char tok[10], *p;\r |
| 1024 | int i;\r |
| 1025 | \r |
| 1026 | if (flist == NULL || ! list_on)\r |
| 1027 | return;\r |
| 1028 | \r |
| 1029 | sprintf(tok, "%04x", word & 0xFFFF);\r |
| 1030 | \r |
| 1031 | for (i = 0, p = listline + 5*pos; i < 4; i++)\r |
| 1032 | p[i] = tok[i];\r |
| 1033 | \r |
| 1034 | if (relative == RELATIVE)\r |
| 1035 | p[i] = 'R';\r |
| 1036 | else if (relative != ABSOLUTE)\r |
| 1037 | p[i] = '*';\r |
| 1038 | }\r |
| 1039 | \r |
| 1040 | // ---------------------------------------------------------------------------------\r |
| 1041 | // writew - emit an assembled word value. Words are also displayed in the listing file.\r |
| 1042 | // if relative is true, a relocation entry should be recorded.\r |
| 1043 | // ---------------------------------------------------------------------------------\r |
| 1044 | \r |
| 1045 | void writew (int word, RELOC relative)\r |
| 1046 | { // first, the listing stuff...\r |
| 1047 | if (nwout == 0) { // on first output word, display address in column 0\r |
| 1048 | setw(0, org, FALSE);\r |
| 1049 | }\r |
| 1050 | else if (nwout >= 4) { // if 4 words have already been written, start new line\r |
| 1051 | listout(TRUE);\r |
| 1052 | nwout = 0;\r |
| 1053 | }\r |
| 1054 | \r |
| 1055 | nwout++;\r |
| 1056 | setw(nwout, word, relative); // display word in the listing line\r |
| 1057 | \r |
| 1058 | storew(word, relative); // write it to the output medium\r |
| 1059 | }\r |
| 1060 | \r |
| 1061 | // ---------------------------------------------------------------------------------\r |
| 1062 | // setorg - take note of new load address\r |
| 1063 | // ---------------------------------------------------------------------------------\r |
| 1064 | \r |
| 1065 | void setorg (int neworg)\r |
| 1066 | {\r |
| 1067 | if (pass == 2) {\r |
| 1068 | setw(0, neworg, FALSE); // display in listing file in column 0\r |
| 1069 | \r |
| 1070 | if (outmode == OUTMODE_LOAD) { // write new load address to the output file\r |
| 1071 | fprintf(fout, "@%04x%s" ENDLINE, neworg & 0xFFFF, relocate ? "R" : "");\r |
| 1072 | }\r |
| 1073 | else {\r |
| 1074 | bincard_setorg(neworg);\r |
| 1075 | }\r |
| 1076 | }\r |
| 1077 | \r |
| 1078 | org = neworg;\r |
| 1079 | }\r |
| 1080 | \r |
| 1081 | // ---------------------------------------------------------------------------------\r |
| 1082 | // org_even - force load address to an even address\r |
| 1083 | // ---------------------------------------------------------------------------------\r |
| 1084 | \r |
| 1085 | void org_even (void)\r |
| 1086 | {\r |
| 1087 | if (org & 1)\r |
| 1088 | setorg(org+1);\r |
| 1089 | }\r |
| 1090 | \r |
| 1091 | // ---------------------------------------------------------------------------------\r |
| 1092 | // tabtok - get the token in tab-delimited column number i, from source string c,\r |
| 1093 | // saving in string 'tok'. If save is nonnull, we copy the entire remainder of\r |
| 1094 | // the input string in buffer 'save' (in contrast to 'tok' which gets only the\r |
| 1095 | // first whitespace delimited token).\r |
| 1096 | // ---------------------------------------------------------------------------------\r |
| 1097 | \r |
| 1098 | void tabtok (char *c, char *tok, int i, char *save)\r |
| 1099 | {\r |
| 1100 | *tok = '\0';\r |
| 1101 | \r |
| 1102 | while (--i >= 0) { // skip to i'th tab-delimited field\r |
| 1103 | if ((c = strchr(c, '\t')) == NULL) {\r |
| 1104 | if (save) // was none\r |
| 1105 | *save = '\0';\r |
| 1106 | return;\r |
| 1107 | }\r |
| 1108 | c++;\r |
| 1109 | }\r |
| 1110 | \r |
| 1111 | while (*c == ' ') // skip leading blanks\r |
| 1112 | c++;\r |
| 1113 | \r |
| 1114 | if (save != NULL) // save copy of entire remainder\r |
| 1115 | strcpy(save, c);\r |
| 1116 | \r |
| 1117 | while (*c > ' ') { // take up to any whitespace\r |
| 1118 | if (*c == '(') { // if we start with a paren, take all up to closing paren including spaces\r |
| 1119 | while (*c && *c != ')')\r |
| 1120 | *tok++ = *c++;\r |
| 1121 | }\r |
| 1122 | else if (*c == '.') { // period means literal character following\r |
| 1123 | *tok++ = *c++;\r |
| 1124 | if (*c)\r |
| 1125 | *tok++ = *c++;\r |
| 1126 | }\r |
| 1127 | else\r |
| 1128 | *tok++ = *c++;\r |
| 1129 | }\r |
| 1130 | \r |
| 1131 | *tok = '\0';\r |
| 1132 | }\r |
| 1133 | \r |
| 1134 | // ---------------------------------------------------------------------------------\r |
| 1135 | // coltok - extract a token from string c, saving to buffer tok, by examining\r |
| 1136 | // columns ifrom through ito only. If save is nonnull, the entire remainder\r |
| 1137 | // of the input from ifrom to the end is saved there. In this routine\r |
| 1138 | // if condense is true, we save all nonwhite characters in the column range;\r |
| 1139 | // not the usual thing. This helps us coalesce the format, tag, & index things\r |
| 1140 | // nto one string for the simple minded parser. If condense is FALSE, we terminate\r |
| 1141 | // on the first nonblank, except that if we start with a (, we take up to ) and\r |
| 1142 | // then terminate on a space.\r |
| 1143 | //\r |
| 1144 | // ifrom and ito on entry are column numbers, not indices; we change that right away\r |
| 1145 | // ---------------------------------------------------------------------------------\r |
| 1146 | \r |
| 1147 | void coltok (char *c, char *tok, int ifrom, int ito, BOOL condense, char *save)\r |
| 1148 | {\r |
| 1149 | char *otok = tok;\r |
| 1150 | int i;\r |
| 1151 | \r |
| 1152 | ifrom--;\r |
| 1153 | ito--;\r |
| 1154 | \r |
| 1155 | for (i = 0; i < ifrom; i++) {\r |
| 1156 | if (c[i] == '\0') { // line ended before this column\r |
| 1157 | *tok = '\0';\r |
| 1158 | if (save)\r |
| 1159 | *save = '\0';\r |
| 1160 | return;\r |
| 1161 | }\r |
| 1162 | }\r |
| 1163 | \r |
| 1164 | if (save) // save from ifrom on\r |
| 1165 | strcpy(save, c+i);\r |
| 1166 | \r |
| 1167 | if (condense) {\r |
| 1168 | for (; i <= ito; i++) { // save only nonwhite characters\r |
| 1169 | if (c[i] > ' ')\r |
| 1170 | *tok++ = c[i];\r |
| 1171 | }\r |
| 1172 | }\r |
| 1173 | else {\r |
| 1174 | if (c[i] == ' ' && save != NULL)// if it starts with a space, it's empty\r |
| 1175 | *save = '\0';\r |
| 1176 | \r |
| 1177 | while (i <= ito) { // take up to any whitespace\r |
| 1178 | if (c[i] <= ' ')\r |
| 1179 | break;\r |
| 1180 | else if (c[i] == '(') { // starts with paren? take to close paren\r |
| 1181 | while (i <= ito && c[i]) {\r |
| 1182 | if ((*tok++ = c[i++]) == ')')\r |
| 1183 | break;\r |
| 1184 | }\r |
| 1185 | }\r |
| 1186 | else if (c[i] == '.') { // period means literal character following\r |
| 1187 | *tok++ = c[i++];\r |
| 1188 | if (i <= ito && c[i])\r |
| 1189 | *tok++ = c[i++];\r |
| 1190 | }\r |
| 1191 | else\r |
| 1192 | *tok++ = c[i++];\r |
| 1193 | }\r |
| 1194 | }\r |
| 1195 | \r |
| 1196 | *tok = '\0';\r |
| 1197 | trim(otok);\r |
| 1198 | }\r |
| 1199 | \r |
| 1200 | // ---------------------------------------------------------------------------------\r |
| 1201 | // opcode table\r |
| 1202 | // ---------------------------------------------------------------------------------\r |
| 1203 | \r |
| 1204 | // modifiers for the opcode definition table:\r |
| 1205 | \r |
| 1206 | #define L "L" // long\r |
| 1207 | #define X "X" // absolute displacement\r |
| 1208 | #define I "I" // indirect\r |
| 1209 | #define IDX "0123" // indexed (some LDX commands in the DMS source say LDX L0, so accept 0\r |
| 1210 | #define E "E" // even address\r |
| 1211 | #define NONE ""\r |
| 1212 | #define ALL L X I IDX // hope non-Microsoft C accepts and concatenates strings like this\r |
| 1213 | #define ANY "\xFF"\r |
| 1214 | #define NUMS "0123456789"\r |
| 1215 | \r |
| 1216 | #define IS_DBL 0x0001 // double word operand implies even address\r |
| 1217 | #define IS_ABS 0x0002 // always uses absolute addressing mode (implied X)\r |
| 1218 | #define NO_IDX 0x0004 // even with 1 or 2 modifier, this is not really indexed (for STX/LDX)\r |
| 1219 | #define NO_ARGS 0x0008 // statement takes no arguments\r |
| 1220 | #define IS_1800 0x0010 // 1800-only directive or instruction, flagged if 1800 mode is not enabled\r |
| 1221 | #define TRAP 0x1000 // debug this instruction\r |
| 1222 | \r |
| 1223 | struct tag_op { // OPCODE TABLE\r |
| 1224 | char *mnem;\r |
| 1225 | int opcode;\r |
| 1226 | void (*handler)(struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1227 | char *mods_allowed;\r |
| 1228 | char *mods_implied;\r |
| 1229 | int flags;\r |
| 1230 | };\r |
| 1231 | // special opcode handlers\r |
| 1232 | void std_op (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1233 | void b_op (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1234 | void bsc_op (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1235 | void bsi_op (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1236 | void mdx_op (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1237 | void shf_op (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1238 | \r |
| 1239 | void x_aif (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1240 | void x_aifb (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1241 | void x_ago (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1242 | void x_agob (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1243 | void x_anop (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1244 | void x_abs (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1245 | void x_call (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1246 | void x_dsa (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1247 | void x_file (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1248 | void x_link (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1249 | void x_libf (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1250 | void x_org (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1251 | void x_opt (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1252 | void x_ces (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1253 | void x_bes (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1254 | void x_bss (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1255 | void x_dc (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1256 | void x_dec (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1257 | void x_decs (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1258 | void x_ebc (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1259 | void x_end (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1260 | void x_ent (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1261 | void x_epr (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1262 | void x_equ (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1263 | void x_exit (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1264 | void x_ils (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1265 | void x_iss (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1266 | void x_libr (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1267 | void x_lorg (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1268 | void x_dmes (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1269 | void x_dn (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1270 | void x_dump (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1271 | void x_pdmp (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1272 | void x_hdng (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1273 | void x_list (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1274 | void x_spac (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1275 | void x_spr (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1276 | void x_ejct (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1277 | void x_trap (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1278 | void x_xflc (struct tag_op *op, char *label, char *mods, char *arg);\r |
| 1279 | \r |
| 1280 | struct tag_op ops[] = {\r |
| 1281 | ".OPT", 0, x_opt, NONE, NONE, 0, // non-IBM extensions\r |
| 1282 | "TRAP", 0, x_trap, NONE, NONE, 0, // assembler breakpoint trap\r |
| 1283 | ".CES", 0, x_ces, NONE, NONE, 0, // lets us specify simulated console entry switch values for startup\r |
| 1284 | \r |
| 1285 | "ABS", 0, x_abs, NONE, NONE, 0,\r |
| 1286 | "BES", 0, x_bes, E, NONE, 0, // standard pseudo-ops\r |
| 1287 | "BSS", 0, x_bss, E, NONE, 0,\r |
| 1288 | "DC", 0, x_dc, NONE, NONE, 0,\r |
| 1289 | "DEC", 0, x_dec, E, E, IS_DBL,\r |
| 1290 | "DECS", 0, x_decs, E, E, IS_DBL, // this is an IBM 1800 directive\r |
| 1291 | "DMES", 0, x_dmes, ANY, NONE, 0,\r |
| 1292 | "DN", 0, x_dn, NONE, NONE, 0,\r |
| 1293 | "DSA", 0, x_dsa, NONE, NONE, 0,\r |
| 1294 | "DUMP", 0, x_dump, NONE, NONE, 0,\r |
| 1295 | "EBC", 0, x_ebc, NONE, NONE, 0,\r |
| 1296 | "EJCT", 0, x_ejct, NONE, NONE, 0,\r |
| 1297 | "END", 0, x_end, NONE, NONE, 0,\r |
| 1298 | "ENT", 0, x_ent, NONE, NONE, 0,\r |
| 1299 | "EPR", 0, x_epr, NONE, NONE, 0,\r |
| 1300 | "EQU", 0, x_equ, NONE, NONE, 0,\r |
| 1301 | "EXIT", 0, x_exit, NONE, NONE, 0, // alias for call $exit since we don't have macros yet\r |
| 1302 | "FILE", 0, x_file, NONE, NONE, 0,\r |
| 1303 | "HDNG", 0, x_hdng, ANY, NONE, 0,\r |
| 1304 | "ILS", 0, x_ils, NUMS, NONE, 0,\r |
| 1305 | "ISS", 0, x_iss, NUMS, NONE, 0,\r |
| 1306 | "LIBF", 0, x_libf, NONE, NONE, 0,\r |
| 1307 | "LIBR", 0, x_libr, NONE, NONE, 0,\r |
| 1308 | "LINK", 0, x_link, NONE, NONE, 0,\r |
| 1309 | "LIST", 0, x_list, NONE, NONE, 0,\r |
| 1310 | "LORG", 0, x_lorg, NONE, NONE, 0,\r |
| 1311 | "ORG", 0, x_org, NONE, NONE, 0,\r |
| 1312 | "PDMP", 0, x_pdmp, NONE, NONE, 0,\r |
| 1313 | "SPAC", 0, x_spac, NONE, NONE, 0,\r |
| 1314 | "SPR", 0, x_spr, NONE, NONE, 0,\r |
| 1315 | "XFLC", 0, x_xflc, NONE, NONE, 0,\r |
| 1316 | \r |
| 1317 | "A", 0x8000, std_op, ALL, NONE, 0, // standard addressing ops\r |
| 1318 | "AD", 0x8800, std_op, ALL, NONE, IS_DBL,\r |
| 1319 | "AND", 0xE000, std_op, ALL, NONE, 0,\r |
| 1320 | "BSI", 0x4000, bsi_op, ALL, NONE, 0,\r |
| 1321 | "CALL", 0x4000, x_call, ALL, L, 0, // alias for BSI L, or external call\r |
| 1322 | "CMP", 0xB000, std_op, ALL, NONE, IS_1800, // this is an IBM 1800-only instruction\r |
| 1323 | "DCM", 0xB800, std_op, ALL, NONE, IS_1800, // this is an IBM 1800-only instruction\r |
| 1324 | "D" , 0xA800, std_op, ALL, NONE, 0,\r |
| 1325 | "EOR", 0xF000, std_op, ALL, NONE, 0,\r |
| 1326 | "LD", 0xC000, std_op, ALL, NONE, 0,\r |
| 1327 | "LDD", 0xC800, std_op, ALL, NONE, IS_DBL,\r |
| 1328 | "LDS", 0x2000, std_op, NONE, NONE, IS_ABS,\r |
| 1329 | "LDX", 0x6000, std_op, ALL, NONE, IS_ABS|NO_IDX,\r |
| 1330 | "M", 0xA000, std_op, ALL, NONE, 0,\r |
| 1331 | "MDX", 0x7000, mdx_op, ALL, NONE, 0,\r |
| 1332 | "MDM", 0x7000, mdx_op, L, L, 0, // like MDX L\r |
| 1333 | "NOP", 0x1000, std_op, NONE, NONE, NO_ARGS,\r |
| 1334 | "OR", 0xE800, std_op, ALL, NONE, 0,\r |
| 1335 | "S", 0x9000, std_op, ALL, NONE, 0,\r |
| 1336 | "SD", 0x9800, std_op, ALL, NONE, IS_DBL,\r |
| 1337 | "STD", 0xD800, std_op, ALL, NONE, IS_DBL,\r |
| 1338 | "STO", 0xD000, std_op, ALL, NONE, 0,\r |
| 1339 | "STS", 0x2800, std_op, ALL, NONE, 0,\r |
| 1340 | "STX", 0x6800, std_op, ALL, NONE, NO_IDX,\r |
| 1341 | "WAIT", 0x3000, std_op, NONE, NONE, IS_ABS,\r |
| 1342 | "XCH", 0x18D0, std_op, NONE, NONE, 0, // same as RTE 16, 18C0 + 10\r |
| 1343 | "XIO", 0x0800, std_op, ALL, NONE, IS_DBL,\r |
| 1344 | \r |
| 1345 | "BSC", 0x4800, bsc_op, ALL, NONE, 0, // branch family\r |
| 1346 | "BOSC", 0x4840, bsc_op, ALL, NONE, 0, // is BOSC always long form? No.\r |
| 1347 | "SKP", 0x4800, bsc_op, NONE, NONE, 0, // alias for BSC one word version\r |
| 1348 | \r |
| 1349 | "B", 0x4800, b_op, ALL, NONE, 0, // alias for MDX or BSC L \r |
| 1350 | "BC", 0x4802, std_op, ALL, L, 0, // alias for BSC L \r |
| 1351 | "BN", 0x4828, std_op, ALL, L, 0, // alias for BSC L \r |
| 1352 | "BNN", 0x4810, std_op, ALL, L, 0, // alias for BSC L \r |
| 1353 | "BNP", 0x4808, std_op, ALL, L, 0, // alias for BSC L \r |
| 1354 | "BNZ", 0x4820, std_op, ALL, L, 0, // alias for BSC L \r |
| 1355 | "BO", 0x4801, std_op, ALL, L, 0, // alias for BSC L \r |
| 1356 | "BOD", 0x4840, std_op, ALL, L, 0, // alias for BSC L \r |
| 1357 | "BP", 0x4830, std_op, ALL, L, 0, // alias for BSC L \r |
| 1358 | "BZ", 0x4818, std_op, ALL, L, 0, // alias for BSC L \r |
| 1359 | \r |
| 1360 | "RTE", 0x18C0, shf_op, IDX X, X, 0, // shift family\r |
| 1361 | "SLA", 0x1000, shf_op, IDX X, X, 0,\r |
| 1362 | "SLC", 0x10C0, shf_op, IDX X, X, 0,\r |
| 1363 | "SLCA", 0x1040, shf_op, IDX X, X, 0,\r |
| 1364 | "SLT", 0x1080, shf_op, IDX X, X, 0,\r |
| 1365 | "SRA", 0x1800, shf_op, IDX X, X, 0,\r |
| 1366 | "SRT", 0x1880, shf_op, IDX X, X, 0,\r |
| 1367 | \r |
| 1368 | "AIF", 0, x_aif, NONE, NONE, 0, // assemble if\r |
| 1369 | "AIFB", 0, x_aifb, NONE, NONE, 0, // assemble if\r |
| 1370 | "AGO", 0, x_ago, NONE, NONE, 0, // assemble goto\r |
| 1371 | "AGOB", 0, x_agob, NONE, NONE, 0, // assemble goto\r |
| 1372 | "ANOP", 0, x_anop, NONE, NONE, 0, // assemble target\r |
| 1373 | \r |
| 1374 | NULL // end of table\r |
| 1375 | };\r |
| 1376 | \r |
| 1377 | // ---------------------------------------------------------------------------------\r |
| 1378 | // addextn - apply file extension 'extn' to filename 'fname' and put result in 'outbuf'\r |
| 1379 | // if outbuf is NULL, we allocate a buffer\r |
| 1380 | // ---------------------------------------------------------------------------------\r |
| 1381 | \r |
| 1382 | char *addextn (char *fname, char *extn, char *outbuf)\r |
| 1383 | {\r |
| 1384 | char *buf, line[500], *c;\r |
| 1385 | \r |
| 1386 | buf = (outbuf == NULL) ? line : outbuf;\r |
| 1387 | \r |
| 1388 | strcpy(buf, fname); // create listfn from first source filename (e.g. xxx.lst);\r |
| 1389 | if ((c = strrchr(buf, '\\')) == NULL)\r |
| 1390 | if ((c = strrchr(buf, '/')) == NULL)\r |
| 1391 | if ((c = strrchr(buf, ':')) == NULL)\r |
| 1392 | c = buf;\r |
| 1393 | \r |
| 1394 | if ((c = strrchr(c, '.')) == NULL)\r |
| 1395 | strcat(buf, extn);\r |
| 1396 | else\r |
| 1397 | strcpy(c, extn);\r |
| 1398 | \r |
| 1399 | return (outbuf == NULL) ? astring(line) : outbuf;\r |
| 1400 | }\r |
| 1401 | \r |
| 1402 | // ---------------------------------------------------------------------------------\r |
| 1403 | // controlcard - examine an assembler control card (* in column 1)\r |
| 1404 | // ---------------------------------------------------------------------------------\r |
| 1405 | \r |
| 1406 | BOOL controlcard (char *line)\r |
| 1407 | {\r |
| 1408 | if (strnicmp(line, "*LIST", 5) == 0) { // turn on listing file even if not specified on command line\r |
| 1409 | do_list = list_on = TRUE;\r |
| 1410 | return TRUE;\r |
| 1411 | }\r |
| 1412 | \r |
| 1413 | if (strnicmp(line, "*XREF", 5) == 0) {\r |
| 1414 | do_xref = TRUE;\r |
| 1415 | return TRUE;\r |
| 1416 | }\r |
| 1417 | \r |
| 1418 | if (strnicmp(line, "*PRINT SYMBOL TABLE", 19) == 0) {\r |
| 1419 | do_syms = TRUE;\r |
| 1420 | return TRUE;\r |
| 1421 | }\r |
| 1422 | \r |
| 1423 | if (strnicmp(line, "*SAVE SYMBOL TABLE", 18) == 0) {\r |
| 1424 | savetable = TRUE;\r |
| 1425 | return TRUE;\r |
| 1426 | }\r |
| 1427 | \r |
| 1428 | if (strnicmp(line, "*SYSTEM SYMBOL TABLE", 20) == 0) {\r |
| 1429 | preload = TRUE;\r |
| 1430 | preload_symbols();\r |
| 1431 | return TRUE;\r |
| 1432 | }\r |
| 1433 | \r |
| 1434 | return FALSE;\r |
| 1435 | }\r |
| 1436 | \r |
| 1437 | // ---------------------------------------------------------------------------------\r |
| 1438 | // stuff - insert characters into a line\r |
| 1439 | // ---------------------------------------------------------------------------------\r |
| 1440 | \r |
| 1441 | void stuff (char *buf, char *tok, int maxchars)\r |
| 1442 | {\r |
| 1443 | while (*tok) {\r |
| 1444 | *buf++ = *tok++;\r |
| 1445 | \r |
| 1446 | if (maxchars)\r |
| 1447 | if (--maxchars <= 0)\r |
| 1448 | break; \r |
| 1449 | }\r |
| 1450 | }\r |
| 1451 | \r |
| 1452 | // ---------------------------------------------------------------------------------\r |
| 1453 | // format_line - construct a source code input line from components\r |
| 1454 | // ---------------------------------------------------------------------------------\r |
| 1455 | \r |
| 1456 | void format_line (char *buf, char *label, char *op, char *mods, char *args, char *remarks)\r |
| 1457 | {\r |
| 1458 | int i;\r |
| 1459 | \r |
| 1460 | if (tabformat) {\r |
| 1461 | sprintf(buf, "%s\t%s\t%s\t%s\t%s", label, op, mods, args, remarks);\r |
| 1462 | }\r |
| 1463 | else {\r |
| 1464 | for (i = 0; i < 72; i++)\r |
| 1465 | buf[i] = ' ';\r |
| 1466 | buf[i] = '\0';\r |
| 1467 | \r |
| 1468 | stuff(buf+20, label, 5);\r |
| 1469 | stuff(buf+26, op, 4);\r |
| 1470 | stuff(buf+31, mods, 2);\r |
| 1471 | stuff(buf+34, args, 72-34);\r |
| 1472 | }\r |
| 1473 | }\r |
| 1474 | \r |
| 1475 | // ---------------------------------------------------------------------------------\r |
| 1476 | // lookup_op - find an opcode\r |
| 1477 | // ---------------------------------------------------------------------------------\r |
| 1478 | \r |
| 1479 | struct tag_op * lookup_op (char *mnem)\r |
| 1480 | {\r |
| 1481 | struct tag_op *op;\r |
| 1482 | int i;\r |
| 1483 | \r |
| 1484 | for (op = ops; op->mnem != NULL; op++) {\r |
| 1485 | if ((i = strcmp(op->mnem, mnem)) == 0)\r |
| 1486 | return op;\r |
| 1487 | \r |
| 1488 | if (i > 0)\r |
| 1489 | break;\r |
| 1490 | }\r |
| 1491 | return NULL;\r |
| 1492 | }\r |
| 1493 | \r |
| 1494 | // ---------------------------------------------------------------------------------\r |
| 1495 | // bincard - routines to write IBM 1130 Card object format\r |
| 1496 | // ---------------------------------------------------------------------------------\r |
| 1497 | \r |
| 1498 | unsigned short bincard[54]; // the 54 data words that can fit on a binary format card\r |
| 1499 | char binflag[45]; // the relocation flags of the 45 buffered object words (0, 1, 2, 3)\r |
| 1500 | int bincard_n = 0; // number of object words stored in bincard (0-45)\r |
| 1501 | int bincard_seq = 0; // card output sequence number\r |
| 1502 | int bincard_org = 0; // origin of current card-full\r |
| 1503 | int bincard_maxaddr = 0;\r |
| 1504 | BOOL bincard_first = TRUE; // TRUE when we're to write the program type card\r |
| 1505 | \r |
| 1506 | // bincard_init - prepare a new object data output card\r |
| 1507 | \r |
| 1508 | void bincard_init (void)\r |
| 1509 | {\r |
| 1510 | memset(bincard, 0, sizeof(bincard)); // clear card data\r |
| 1511 | memset(binflag, 0, sizeof(binflag)); // clear relocation data\r |
| 1512 | bincard_n = 0; // no data\r |
| 1513 | bincard[0] = bincard_org; // store load address\r |
| 1514 | bincard_maxaddr = MAX(bincard_maxaddr, bincard_org-1); // save highest address written-to (this may be a BSS)\r |
| 1515 | }\r |
| 1516 | \r |
| 1517 | // binard_writecard - emit a card. sbrk_text = NULL for normal data cards, points to comment text for sbrk card\r |
| 1518 | // note: sbrk_text if not NULL MUST be a writeable buffer of at LEAST 71 characters\r |
| 1519 | \r |
| 1520 | void bincard_writecard (char *sbrk_text)\r |
| 1521 | {\r |
| 1522 | unsigned short binout[80];\r |
| 1523 | char ident[12];\r |
| 1524 | int i, j;\r |
| 1525 | \r |
| 1526 | if (sbrk_text != NULL) { // sbrk card has 4 binary words followed by comment text\r |
| 1527 | for (j = 66; j < 71; j++) // be sure input columns 67..71 are nonblank (have version number)\r |
| 1528 | if (sbrk_text[j] <= ' ')\r |
| 1529 | break;\r |
| 1530 | \r |
| 1531 | if (j < 71) // sbrk card didn't have the info, stuff in current release\r |
| 1532 | for (j = 0; j < 5; j++)\r |
| 1533 | sbrk_text[66+j] = dmsversion[j];\r |
| 1534 | \r |
| 1535 | binout[0] = 0;\r |
| 1536 | binout[1] = 0;\r |
| 1537 | binout[2] = 0;\r |
| 1538 | binout[3] = 0x1000;\r |
| 1539 | \r |
| 1540 | sbrk_text += 5; // start at the real column 6 (after *SBRK\r |
| 1541 | for (j = 5; j < 72; j++)\r |
| 1542 | binout[j] = (*sbrk_text) ? ascii_to_hollerith(*sbrk_text++) : 0;\r |
| 1543 | \r |
| 1544 | }\r |
| 1545 | else { // binary card format packs 54 words into 72 columns\r |
| 1546 | for (i = j = 0; i < 54; i += 3, j += 4) {\r |
| 1547 | binout[j ] = ( bincard[i] & 0xFFF0);\r |
| 1548 | binout[j+1] = ((bincard[i] << 12) & 0xF000) | ((bincard[i+1] >> 4) & 0x0FF0);\r |
| 1549 | binout[j+2] = ((bincard[i+1] << 8) & 0xFF00) | ((bincard[i+2] >> 8) & 0x00F0);\r |
| 1550 | binout[j+3] = ((bincard[i+2] << 4) & 0xFFF0);\r |
| 1551 | }\r |
| 1552 | }\r |
| 1553 | \r |
| 1554 | sprintf(ident, "%08ld", ++bincard_seq); // append sequence text\r |
| 1555 | memmove(ident, progname, MIN(strlen(progname), 4));\r |
| 1556 | \r |
| 1557 | for (i = 0; i < 8; i++)\r |
| 1558 | binout[j++] = ascii_to_hollerith(ident[i]);\r |
| 1559 | \r |
| 1560 | fxwrite(binout, sizeof(binout[0]), 80, fout); // write card image\r |
| 1561 | }\r |
| 1562 | \r |
| 1563 | // binard_writedata - emit an object data card\r |
| 1564 | \r |
| 1565 | void bincard_writedata (void)\r |
| 1566 | {\r |
| 1567 | unsigned short rflag = 0;\r |
| 1568 | int i, j, nflag = 0;\r |
| 1569 | \r |
| 1570 | bincard[1] = 0; // checksum\r |
| 1571 | bincard[2] = 0x0A00 | bincard_n; // data card type + word count\r |
| 1572 | \r |
| 1573 | for (i = 0, j = 3; i < bincard_n; i++) { // construct relocation indicator bitmap\r |
| 1574 | if (nflag == 8) {\r |
| 1575 | bincard[j++] = rflag;\r |
| 1576 | rflag = 0;\r |
| 1577 | nflag = 0;\r |
| 1578 | }\r |
| 1579 | rflag = (rflag << 2) | (binflag[i] & 3);\r |
| 1580 | nflag++;\r |
| 1581 | }\r |
| 1582 | \r |
| 1583 | if (nflag > 0)\r |
| 1584 | bincard[j] = rflag << (16 - 2*nflag);\r |
| 1585 | \r |
| 1586 | bincard_writecard(FALSE); // emit the card\r |
| 1587 | }\r |
| 1588 | \r |
| 1589 | // bincard_flush - flush any pending binary data\r |
| 1590 | \r |
| 1591 | void bincard_flush (void)\r |
| 1592 | {\r |
| 1593 | if (bincard_n > 0)\r |
| 1594 | bincard_writedata();\r |
| 1595 | \r |
| 1596 | bincard_init();\r |
| 1597 | }\r |
| 1598 | \r |
| 1599 | // bincard_sbrk - emit an SBRK card\r |
| 1600 | \r |
| 1601 | void bincard_sbrk (char *line)\r |
| 1602 | {\r |
| 1603 | if (bincard_first)\r |
| 1604 | bincard_typecard();\r |
| 1605 | else\r |
| 1606 | bincard_flush();\r |
| 1607 | \r |
| 1608 | bincard_writecard(line);\r |
| 1609 | }\r |
| 1610 | \r |
| 1611 | // bincard_setorg - set the origin\r |
| 1612 | \r |
| 1613 | void bincard_setorg (int neworg)\r |
| 1614 | {\r |
| 1615 | bincard_org = neworg; // set origin for next card\r |
| 1616 | bincard_flush(); // flush any current data & store origin\r |
| 1617 | }\r |
| 1618 | \r |
| 1619 | // bincard_endcard - write end of program card\r |
| 1620 | \r |
| 1621 | void bincard_endcard (void)\r |
| 1622 | {\r |
| 1623 | bincard_flush();\r |
| 1624 | \r |
| 1625 | bincard[0] = (bincard_maxaddr + 2) & ~1; // effective length: add 1 to max origin, then 1 more to round up\r |
| 1626 | bincard[1] = 0;\r |
| 1627 | bincard[2] = 0x0F00;\r |
| 1628 | bincard[3] = pta & 0xFFFF;\r |
| 1629 | \r |
| 1630 | bincard_writecard(NULL);\r |
| 1631 | }\r |
| 1632 | \r |
| 1633 | // bincard_typecard - write the program type \r |
| 1634 | \r |
| 1635 | void bincard_typecard (void)\r |
| 1636 | {\r |
| 1637 | int i;\r |
| 1638 | \r |
| 1639 | if (! bincard_first) \r |
| 1640 | return;\r |
| 1641 | \r |
| 1642 | bincard_first = FALSE;\r |
| 1643 | \r |
| 1644 | memset(bincard, 0, sizeof(bincard));\r |
| 1645 | \r |
| 1646 | bincard[2] = (unsigned short) ((progtype << 8) | intmode | realmode);\r |
| 1647 | \r |
| 1648 | // all indices not listed are documented as 'reserved'\r |
| 1649 | \r |
| 1650 | switch (progtype) {\r |
| 1651 | case PROGTYPE_ABSOLUTE:\r |
| 1652 | case PROGTYPE_RELOCATABLE:\r |
| 1653 | // bincard[ 4] = 0; // length of common (fortran only)\r |
| 1654 | bincard[ 5] = 0x0003;\r |
| 1655 | // bincard[ 6] = 0; // length of work area (fortran only)\r |
| 1656 | bincard[ 8] = ndefined_files;\r |
| 1657 | namecode(&bincard[9], progname);\r |
| 1658 | bincard[11] = (pta < 0) ? 0 : pta;\r |
| 1659 | break;\r |
| 1660 | \r |
| 1661 | case PROGTYPE_LIBF:\r |
| 1662 | case PROGTYPE_CALL:\r |
| 1663 | bincard[ 5] = 3*nentries;\r |
| 1664 | for (i = 0; i < nentries; i++) {\r |
| 1665 | namecode(&bincard[9+3*i], entry[i]->name);\r |
| 1666 | bincard[11+3*i] = entry[i]->value;\r |
| 1667 | }\r |
| 1668 | break;\r |
| 1669 | \r |
| 1670 | case PROGTYPE_ISSLIBF:\r |
| 1671 | case PROGTYPE_ISSCALL:\r |
| 1672 | bincard[ 5] = 6+nintlevels;\r |
| 1673 | namecode(&bincard[9], entry[0]->name);\r |
| 1674 | bincard[11] = entry[0]->value;\r |
| 1675 | bincard[12] = iss_number + ISTV; // magic number ISTV is 0x33 in DMS R2V12\r |
| 1676 | bincard[13] = iss_number;\r |
| 1677 | bincard[14] = nintlevels;\r |
| 1678 | bincard[15] = intlevel_primary;\r |
| 1679 | bincard[16] = intlevel_secondary;\r |
| 1680 | bincard[29] = 1;\r |
| 1681 | break;\r |
| 1682 | \r |
| 1683 | case PROGTYPE_ILS:\r |
| 1684 | bincard[ 2] = (unsigned short) (progtype << 8);\r |
| 1685 | bincard[ 5] = 4;\r |
| 1686 | bincard[12] = intlevel_primary;\r |
| 1687 | break;\r |
| 1688 | \r |
| 1689 | default:\r |
| 1690 | bail("in bincard_typecard, can't happen");\r |
| 1691 | }\r |
| 1692 | \r |
| 1693 | bincard[1] = 0; // checksum\r |
| 1694 | \r |
| 1695 | bincard_writecard(NULL);\r |
| 1696 | \r |
| 1697 | bincard_init();\r |
| 1698 | }\r |
| 1699 | \r |
| 1700 | // bincard_writew - write a word to the current output card.\r |
| 1701 | \r |
| 1702 | void bincard_writew (int word, RELOC relative)\r |
| 1703 | {\r |
| 1704 | if (pass != 2)\r |
| 1705 | return;\r |
| 1706 | \r |
| 1707 | if (bincard_first)\r |
| 1708 | bincard_typecard();\r |
| 1709 | else if (bincard_n >= 45) // flush full card buffer\r |
| 1710 | bincard_flush();\r |
| 1711 | \r |
| 1712 | binflag[bincard_n] = relative & 3; // store relocation bits and data word\r |
| 1713 | bincard[9+bincard_n++] = word;\r |
| 1714 | \r |
| 1715 | if (relative != LIBF) {\r |
| 1716 | bincard_maxaddr = MAX(bincard_maxaddr, bincard_org);\r |
| 1717 | bincard_org++;\r |
| 1718 | }\r |
| 1719 | }\r |
| 1720 | \r |
| 1721 | // writetwo - notification that we are about to write two words which must stay together\r |
| 1722 | \r |
| 1723 | void writetwo (void)\r |
| 1724 | {\r |
| 1725 | if (pass == 2 && outmode == OUTMODE_BINARY && bincard_n >= 44)\r |
| 1726 | bincard_flush();\r |
| 1727 | }\r |
| 1728 | \r |
| 1729 | // handle_sbrk - handle an SBRK directive.\r |
| 1730 | // This was not part of the 1130 assembler; they assembled DMS on a 360\r |
| 1731 | \r |
| 1732 | void handle_sbrk (char *line)\r |
| 1733 | {\r |
| 1734 | char rline[90];\r |
| 1735 | \r |
| 1736 | if (pass != 2)\r |
| 1737 | return;\r |
| 1738 | \r |
| 1739 | strncpy(rline, line, 81); // get a copy and pad it if necessary to 80 characters\r |
| 1740 | rline[80] = '\0';\r |
| 1741 | while (strlen(rline) < 80)\r |
| 1742 | strcat(rline, " ");\r |
| 1743 | \r |
| 1744 | switch (outmode) {\r |
| 1745 | case OUTMODE_LOAD:\r |
| 1746 | fprintf(fout, "#SBRK%s\n", trim(rline+5));\r |
| 1747 | \r |
| 1748 | case OUTMODE_BINARY:\r |
| 1749 | bincard_sbrk(rline);\r |
| 1750 | break;\r |
| 1751 | \r |
| 1752 | default:\r |
| 1753 | bail("in handle_sbrk, can't happen");\r |
| 1754 | }\r |
| 1755 | }\r |
| 1756 | \r |
| 1757 | // ---------------------------------------------------------------------------------\r |
| 1758 | // namecode - turn a string into a two-word packed name\r |
| 1759 | // ---------------------------------------------------------------------------------\r |
| 1760 | \r |
| 1761 | void namecode (unsigned short *words, char *tok)\r |
| 1762 | {\r |
| 1763 | long val = 0;\r |
| 1764 | int i, ch;\r |
| 1765 | \r |
| 1766 | for (i = 0; i < 5; i++) { // pick up bits\r |
| 1767 | if (*tok)\r |
| 1768 | ch = *tok++;\r |
| 1769 | else\r |
| 1770 | ch = ' ';\r |
| 1771 | \r |
| 1772 | val = (val << 6) | (ascii_to_ebcdic_table[ch] & 0x3F);\r |
| 1773 | }\r |
| 1774 | \r |
| 1775 | words[0] = (unsigned short) (val >> 16);\r |
| 1776 | words[1] = (unsigned short) val;\r |
| 1777 | }\r |
| 1778 | \r |
| 1779 | // ---------------------------------------------------------------------------------\r |
| 1780 | // parse_line - parse one input line.\r |
| 1781 | // ---------------------------------------------------------------------------------\r |
| 1782 | \r |
| 1783 | void parse_line (char *line)\r |
| 1784 | {\r |
| 1785 | char label[100], mnem[100], arg[200], mods[20], *c;\r |
| 1786 | struct tag_op *op;\r |
| 1787 | \r |
| 1788 | if (line[0] == '/' && line[1] == '/') // job control card? probably best to ignore it\r |
| 1789 | return;\r |
| 1790 | \r |
| 1791 | if (line[0] == '*') { // control card comment or comment in tab-format file\r |
| 1792 | if (check_control) // pay attention to control cards only at top of file\r |
| 1793 | if (! controlcard(line))\r |
| 1794 | check_control = FALSE; // first non-control card shuts off sensitivity to them\r |
| 1795 | \r |
| 1796 | if (strnicmp(line+1, "SBRK", 4) == 0)\r |
| 1797 | handle_sbrk(line);\r |
| 1798 | \r |
| 1799 | return;\r |
| 1800 | }\r |
| 1801 | \r |
| 1802 | check_control = FALSE; // non-control card, consider them no more\r |
| 1803 | \r |
| 1804 | label[0] = '\0'; // prepare to extract fields\r |
| 1805 | mods[0] = '\0';\r |
| 1806 | mnem[0] = '\0';\r |
| 1807 | arg[0] = '\0';\r |
| 1808 | \r |
| 1809 | if (tabformat || strchr(line, '\t') != NULL) { // if input line has tabs, parse loosely\r |
| 1810 | tabformat = TRUE; // this is a tab-formatted file\r |
| 1811 | \r |
| 1812 | for (c = line; *c && *c <= ' '; c++) // find first nonblank\r |
| 1813 | ;\r |
| 1814 | \r |
| 1815 | if (*c == '*' || ! *c) // ignore as a comment\r |
| 1816 | return;\r |
| 1817 | \r |
| 1818 | tabtok(line, label, 0, NULL);\r |
| 1819 | tabtok(line, mnem, 1, NULL);\r |
| 1820 | tabtok(line, mods, 2, NULL);\r |
| 1821 | tabtok(line, arg, 3, opfield);\r |
| 1822 | }\r |
| 1823 | else { // if no tabs, use strict card-column format\r |
| 1824 | if (line[20] == '*') // comment\r |
| 1825 | return;\r |
| 1826 | \r |
| 1827 | line[72] = '\0'; // clip off sequence\r |
| 1828 | \r |
| 1829 | coltok(line, label, 21, 25, TRUE, NULL);\r |
| 1830 | coltok(line, mnem, 27, 30, TRUE, NULL);\r |
| 1831 | coltok(line, mods, 32, 33, TRUE, NULL);\r |
| 1832 | coltok(line, arg, 35, 72, FALSE, opfield);\r |
| 1833 | }\r |
| 1834 | \r |
| 1835 | // I don't know where I got this idea, but it's wrong...\r |
| 1836 | // if (strchr(mods, '1') || strchr(mods, '2') || strchr(mods, '3')) { // index + X means ignore X\r |
| 1837 | // if ((c = strchr(mods, 'X')) != NULL)\r |
| 1838 | // strcpy(c, c+1); // remove the X\r |
| 1839 | // }\r |
| 1840 | \r |
| 1841 | if (*label) // display org in any line with a label\r |
| 1842 | setw(0, org, FALSE);\r |
| 1843 | \r |
| 1844 | if (! *mnem) { // label w/o mnemonic, just define the symbol\r |
| 1845 | if (*label)\r |
| 1846 | set_symbol(label, org, TRUE, relocate);\r |
| 1847 | return;\r |
| 1848 | }\r |
| 1849 | \r |
| 1850 | if ((op = lookup_op(mnem)) == NULL) { // look up mnemonic\r |
| 1851 | if (*label)\r |
| 1852 | set_symbol(label, org, TRUE, relocate);// at least define the label\r |
| 1853 | \r |
| 1854 | asm_error("Unknown opcode '%s'", mnem);\r |
| 1855 | return;\r |
| 1856 | }\r |
| 1857 | \r |
| 1858 | if (op->flags & TRAP) // assembler debugging breakpoint\r |
| 1859 | x_trap(op, label, mods, arg);\r |
| 1860 | \r |
| 1861 | if (*op->mods_allowed != '\xFF') { // validate modifiers against list of allowed characters\r |
| 1862 | for (c = mods; *c; ) {\r |
| 1863 | if (strchr(op->mods_allowed, *c) == NULL) {\r |
| 1864 | asm_warning("Modifier '%c' not permitted", *c);\r |
| 1865 | strcpy(c, c+1); // remove it and keep parsing\r |
| 1866 | }\r |
| 1867 | else\r |
| 1868 | c++;\r |
| 1869 | }\r |
| 1870 | }\r |
| 1871 | \r |
| 1872 | strcat(mods, op->mods_implied); // tack on implied modifiers\r |
| 1873 | \r |
| 1874 | if (strchr(mods, 'I')) // indirect implies long\r |
| 1875 | strcat(mods, "L");\r |
| 1876 | \r |
| 1877 | requires_even_address = op->flags & IS_DBL;\r |
| 1878 | \r |
| 1879 | org_advanced = strchr(mods, 'L') ? 2 : 1; // by default, * means address + 1 or 2. Sometimes it doesn't\r |
| 1880 | (op->handler)(op, label, mods, arg);\r |
| 1881 | \r |
| 1882 | if ((op->flags & IS_1800) && ! enable_1800)\r |
| 1883 | asm_warning("%s is IBM 1800-specific; use the -8 command line option", op->mnem);\r |
| 1884 | }\r |
| 1885 | \r |
| 1886 | // ---------------------------------------------------------------------------------\r |
| 1887 | // get one input line from current file or macro\r |
| 1888 | // ---------------------------------------------------------------------------------\r |
| 1889 | \r |
| 1890 | BOOL get_line (char *buf, int nbuf, BOOL onelevel)\r |
| 1891 | {\r |
| 1892 | char *retval;\r |
| 1893 | \r |
| 1894 | if (ended) // we hit the END command\r |
| 1895 | return FALSE;\r |
| 1896 | \r |
| 1897 | // if macro active, return line from macro buffer, otherwise read from file\r |
| 1898 | // do not pop end-of-macro if onelevel is TRUE \r |
| 1899 | \r |
| 1900 | if ((retval = fgets(buf, nbuf, fin)) == NULL)\r |
| 1901 | return FALSE;\r |
| 1902 | \r |
| 1903 | lno++; // count the line\r |
| 1904 | return TRUE;\r |
| 1905 | }\r |
| 1906 | \r |
| 1907 | // ---------------------------------------------------------------------------------\r |
| 1908 | // proc - process one pass of one source file\r |
| 1909 | // ---------------------------------------------------------------------------------\r |
| 1910 | \r |
| 1911 | void proc (char *fname)\r |
| 1912 | { \r |
| 1913 | char line[256], *c;\r |
| 1914 | int i;\r |
| 1915 | \r |
| 1916 | if (strchr(fname, '.') == NULL) // if input file has no extension,\r |
| 1917 | addextn(fname, ".asm", curfn); // set appropriate file extension\r |
| 1918 | else\r |
| 1919 | strcpy(curfn, fname); // otherwise use extension specified\r |
| 1920 | \r |
| 1921 | // let's leave filename case alone even if it doesn't matter\r |
| 1922 | //#if (defined(_WIN32) || defined(VMS))\r |
| 1923 | // upcase(curfn); // only force uppercase of name on Windows and VMS\r |
| 1924 | //#endif\r |
| 1925 | \r |
| 1926 | if (progname[0] == '\0') { // pick up primary filename\r |
| 1927 | if ((c = strrchr(curfn, '\\')) == NULL)\r |
| 1928 | if ((c = strrchr(curfn, '/')) == NULL)\r |
| 1929 | if ((c = strrchr(curfn, ':')) == NULL)\r |
| 1930 | c = curfn;\r |
| 1931 | \r |
| 1932 | strncpy(progname, c, sizeof(progname)); // take name after path\r |
| 1933 | progname[sizeof(progname)-1] = '\0';\r |
| 1934 | if ((c = strchr(progname, '.')) != NULL)// remove extension\r |
| 1935 | *c = '\0';\r |
| 1936 | }\r |
| 1937 | \r |
| 1938 | lno = 0; // reset global input line number\r |
| 1939 | ended = FALSE; // have not seen END statement\r |
| 1940 | \r |
| 1941 | if (listfn == NULL) // if list file name is undefined,\r |
| 1942 | listfn = addextn(fname, ".lst", NULL); // create from first filename\r |
| 1943 | \r |
| 1944 | if (verbose)\r |
| 1945 | fprintf(stderr, "--- Starting file %s pass %d\n", curfn, pass);\r |
| 1946 | \r |
| 1947 | if ((fin = fopen(curfn, "r")) == NULL) {\r |
| 1948 | perror(curfn); // oops\r |
| 1949 | exit(1);\r |
| 1950 | }\r |
| 1951 | \r |
| 1952 | if (flist) { // put banner in listing file\r |
| 1953 | strcpy(listline,"=== FILE ======================================================================");\r |
| 1954 | for (i = 9, c = curfn; *c;)\r |
| 1955 | listline[i++] = *c++;\r |
| 1956 | listline[i] = ' ';\r |
| 1957 | fputs(listline, flist);\r |
| 1958 | putc('\n', flist);\r |
| 1959 | list_on = TRUE;\r |
| 1960 | }\r |
| 1961 | // read all lines till EOF or END statement\r |
| 1962 | while (get_line(line, sizeof(line), FALSE)) {\r |
| 1963 | prep_line(line); // preform standard line prep\r |
| 1964 | parse_line(line); // parse\r |
| 1965 | listout(FALSE); // complete the listing\r |
| 1966 | }\r |
| 1967 | \r |
| 1968 | fclose(fin);\r |
| 1969 | \r |
| 1970 | if (n_literals > 0) { // force out any pending literal constants at end of file\r |
| 1971 | output_literals(TRUE);\r |
| 1972 | listout(FALSE);\r |
| 1973 | }\r |
| 1974 | }\r |
| 1975 | \r |
| 1976 | // ---------------------------------------------------------------------------------\r |
| 1977 | // prep_line - prepare input line for parsing\r |
| 1978 | // ---------------------------------------------------------------------------------\r |
| 1979 | \r |
| 1980 | void prep_line (char *line)\r |
| 1981 | {\r |
| 1982 | char *c;\r |
| 1983 | \r |
| 1984 | upcase(line); // uppercase it\r |
| 1985 | nwout = 0; // number of words output so far\r |
| 1986 | line_error = FALSE; // no errors on this line so far\r |
| 1987 | \r |
| 1988 | for (c = line; *c; c++) { // truncate at newline\r |
| 1989 | if (*c == '\r' || *c == '\n') {\r |
| 1990 | *c = '\0';\r |
| 1991 | break;\r |
| 1992 | }\r |
| 1993 | }\r |
| 1994 | \r |
| 1995 | if (flist && list_on) { // construct beginning of listing line\r |
| 1996 | if (tabformat)\r |
| 1997 | sprintf(listline, LINEFORMAT, lno, detab(line));\r |
| 1998 | else {\r |
| 1999 | if (strlen(line) > 20) // get the part where the commands start\r |
| 2000 | c = line+20;\r |
| 2001 | else\r |
| 2002 | c = "";\r |
| 2003 | \r |
| 2004 | sprintf(listline, LINEFORMAT, lno, c);\r |
| 2005 | stuff(listline, line, 20); // stuff the left margin in to the left side\r |
| 2006 | }\r |
| 2007 | }\r |
| 2008 | }\r |
| 2009 | \r |
| 2010 | // ---------------------------------------------------------------------------------\r |
| 2011 | // opcmp - operand name comparison routine for qsort\r |
| 2012 | // ---------------------------------------------------------------------------------\r |
| 2013 | \r |
| 2014 | int opcmp (const void *a, const void *b)\r |
| 2015 | {\r |
| 2016 | return strcmp(((struct tag_op *) a)->mnem, ((struct tag_op *) b)->mnem);\r |
| 2017 | }\r |
| 2018 | \r |
| 2019 | // ---------------------------------------------------------------------------------\r |
| 2020 | // preload_symbols - load a saved symbol table\r |
| 2021 | // ---------------------------------------------------------------------------------\r |
| 2022 | \r |
| 2023 | void preload_symbols (void)\r |
| 2024 | {\r |
| 2025 | FILE *fd;\r |
| 2026 | char str[200], sym[20];\r |
| 2027 | int v;\r |
| 2028 | static BOOL preloaded_already = FALSE;\r |
| 2029 | \r |
| 2030 | if (pass > 1 || preloaded_already)\r |
| 2031 | return;\r |
| 2032 | \r |
| 2033 | preloaded_already = TRUE;\r |
| 2034 | \r |
| 2035 | if ((fd = fopen(SYSTEM_TABLE, "r")) == NULL) // read the system symbol tabl\r |
| 2036 | perror(SYSTEM_TABLE);\r |
| 2037 | else {\r |
| 2038 | while (fgets(str, sizeof(str), fd) != NULL) {\r |
| 2039 | if (sscanf(str, "%s %x", sym, &v) == 2)\r |
| 2040 | set_symbol(sym, v, TRUE, FALSE);\r |
| 2041 | }\r |
| 2042 | fclose(fd);\r |
| 2043 | }\r |
| 2044 | }\r |
| 2045 | \r |
| 2046 | // ---------------------------------------------------------------------------------\r |
| 2047 | // save_symbols - save a symbol table\r |
| 2048 | // ---------------------------------------------------------------------------------\r |
| 2049 | \r |
| 2050 | void save_symbols (void)\r |
| 2051 | {\r |
| 2052 | FILE *fd;\r |
| 2053 | char str[20];\r |
| 2054 | PSYMBOL s;\r |
| 2055 | \r |
| 2056 | if (relocate) {\r |
| 2057 | fprintf(stderr, "Can't save symbol table unless ABS assembly\n");\r |
| 2058 | return;\r |
| 2059 | }\r |
| 2060 | \r |
| 2061 | if ((fd = fopen(SYSTEM_TABLE, "r")) != NULL) {\r |
| 2062 | fclose(fd);\r |
| 2063 | if (saveprompt) {\r |
| 2064 | printf("Overwrite system symbol table %s? ", SYSTEM_TABLE);\r |
| 2065 | fgets(str, sizeof(str), stdin);\r |
| 2066 | if (str[0] != 'y' && str[0] != 'Y')\r |
| 2067 | return;\r |
| 2068 | }\r |
| 2069 | unlink(SYSTEM_TABLE);\r |
| 2070 | }\r |
| 2071 | \r |
| 2072 | if ((fd = fopen(SYSTEM_TABLE, "w")) == NULL) {\r |
| 2073 | perror(SYSTEM_TABLE);\r |
| 2074 | return;\r |
| 2075 | }\r |
| 2076 | \r |
| 2077 | for (s = symbols; s != NULL; s = s->next)\r |
| 2078 | fprintf(fd, "%-5s %04x\n", s->name, s->value);\r |
| 2079 | \r |
| 2080 | fclose(fd);\r |
| 2081 | }\r |
| 2082 | \r |
| 2083 | // ---------------------------------------------------------------------------------\r |
| 2084 | // startpass - initialize data structures, prepare to start a pass\r |
| 2085 | // ---------------------------------------------------------------------------------\r |
| 2086 | \r |
| 2087 | void startpass (int n)\r |
| 2088 | {\r |
| 2089 | int nops;\r |
| 2090 | struct tag_op *p;\r |
| 2091 | \r |
| 2092 | pass = n; // reset globals: pass number\r |
| 2093 | nerrors = 0; // error count\r |
| 2094 | org = 0; // load address (origin)\r |
| 2095 | lno = 0; // input line number\r |
| 2096 | relocate = TRUE; // relocatable assembly mode\r |
| 2097 | assembled = FALSE; // true if any output has been generated\r |
| 2098 | list_on = do_list; // listing enable\r |
| 2099 | dmes_saved = FALSE; // partial character strings output\r |
| 2100 | \r |
| 2101 | n_literals = 0; // literal values pending output\r |
| 2102 | lit_tag = 0;\r |
| 2103 | \r |
| 2104 | if (pass == 1) { // first pass only\r |
| 2105 | for (nops = 0, p = ops; p->mnem != NULL; p++, nops++) // count opcodes\r |
| 2106 | ;\r |
| 2107 | \r |
| 2108 | qsort(ops, nops, sizeof(*p), opcmp); // sort the opcode table\r |
| 2109 | \r |
| 2110 | if (preload)\r |
| 2111 | preload_symbols();\r |
| 2112 | }\r |
| 2113 | else { // second pass only\r |
| 2114 | if (outfn == NULL)\r |
| 2115 | outfn = addextn(curfn, (outmode == OUTMODE_LOAD) ? ".out" : ".bin" , NULL);\r |
| 2116 | \r |
| 2117 | if ((fout = fopen(outfn, OUTWRITEMODE)) == NULL) { // open output file\r |
| 2118 | perror(outfn);\r |
| 2119 | exit(1);\r |
| 2120 | }\r |
| 2121 | \r |
| 2122 | if (do_list) { // open listing file\r |
| 2123 | if ((flist = fopen(listfn, "w")) == NULL) {\r |
| 2124 | perror(listfn);\r |
| 2125 | exit(1);\r |
| 2126 | }\r |
| 2127 | listhdr(); // print banner\r |
| 2128 | }\r |
| 2129 | }\r |
| 2130 | }\r |
| 2131 | \r |
| 2132 | // ---------------------------------------------------------------------------------\r |
| 2133 | // x_dc - DC define constant directive\r |
| 2134 | // ---------------------------------------------------------------------------------\r |
| 2135 | \r |
| 2136 | void x_dc (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2137 | { \r |
| 2138 | EXPR expr;\r |
| 2139 | // char *tok;\r |
| 2140 | \r |
| 2141 | org_advanced = 1; // assume * means this address+1\r |
| 2142 | // doesn't make sense, but I think I found DMS listings to support it\r |
| 2143 | \r |
| 2144 | if (strchr(mods, 'E') != NULL) // force even address\r |
| 2145 | org_even();\r |
| 2146 | \r |
| 2147 | setw(0, org, FALSE); // display org in listing line\r |
| 2148 | \r |
| 2149 | if (*label) // define label\r |
| 2150 | set_symbol(label, org, TRUE, relocate);\r |
| 2151 | \r |
| 2152 | // just one!?\r |
| 2153 | getexpr(arg, FALSE, &expr);\r |
| 2154 | writew(expr.value, expr.relative); // store value\r |
| 2155 | \r |
| 2156 | // pick up values, comma delimited\r |
| 2157 | // for (tok = strtok(arg, ","); tok != NULL; tok = strtok(NULL, ",")) {\r |
| 2158 | // getexpr(tok, FALSE, &expr);\r |
| 2159 | // writew(expr.value, expr.relative); // store value\r |
| 2160 | // }\r |
| 2161 | }\r |
| 2162 | \r |
| 2163 | // ---------------------------------------------------------------------------------\r |
| 2164 | // x_dec - DEC define double word constant directive.\r |
| 2165 | // ---------------------------------------------------------------------------------\r |
| 2166 | \r |
| 2167 | // wd[0]: 8 unused bits | characteristic (= exponent+128)\r |
| 2168 | // wd[1]: sign + 15 msb of mantissa in 2's complement \r |
| 2169 | // wd[2]: 16 lsb of mantissa\r |
| 2170 | \r |
| 2171 | // NOTE: these are wrong with Fixed point numbers\r |
| 2172 | \r |
| 2173 | void convert_double_to_extended (double d, unsigned short *wd)\r |
| 2174 | {\r |
| 2175 | int neg, exp;\r |
| 2176 | unsigned long mantissa;\r |
| 2177 | unsigned char *byte = (unsigned char *) &d;\r |
| 2178 | \r |
| 2179 | if (d == 0.) {\r |
| 2180 | wd[0] = wd[1] = wd[2] = 0;\r |
| 2181 | return;\r |
| 2182 | }\r |
| 2183 | // 7 6 5 4 0\r |
| 2184 | // d = ansi real*8 SXXX XXXX XXXX MMMM MMMM MMMM MMMM MMMM ... MMMM MMMM\r |
| 2185 | \r |
| 2186 | neg = byte[7] & 0x80;\r |
| 2187 | exp = ((byte[7] & 0x7F) << 4) | ((byte[6] & 0xF0) >> 4); // extract exponent\r |
| 2188 | exp -= 1023; // remove bias\r |
| 2189 | \r |
| 2190 | exp++; // shift to account for implied 1 we added\r |
| 2191 | \r |
| 2192 | // get 32 bits worth of mantissa. add the implied point\r |
| 2193 | mantissa = 0x80000000L | ((byte[6] & 0x0F) << 27) | (byte[5] << 19) | (byte[4] << 11) | (byte[3] << 3) | ((byte[2] & 0xE0) >> 5);\r |
| 2194 | \r |
| 2195 | if (mantissa & (0x80000000L >> 31)) // keep 31 bits, round if necessary\r |
| 2196 | mantissa += (0x80000000L >> 31);\r |
| 2197 | \r |
| 2198 | mantissa >>= (32-31); // get into low 31 bits\r |
| 2199 | \r |
| 2200 | // now turn into IBM 1130 extended precision\r |
| 2201 | \r |
| 2202 | exp += 128;\r |
| 2203 | \r |
| 2204 | if (neg)\r |
| 2205 | mantissa = (unsigned long) (- (long) mantissa); // two's complement\r |
| 2206 | \r |
| 2207 | wd[0] = (unsigned short) (exp & 0xFF);\r |
| 2208 | wd[1] = (unsigned short) ((neg ? 0x8000 : 0) | ((mantissa >> (31-15)) & 0x7FFF));\r |
| 2209 | wd[2] = (unsigned short) (mantissa & 0xFFFF);\r |
| 2210 | }\r |
| 2211 | \r |
| 2212 | // ---------------------------------------------------------------------------------\r |
| 2213 | // ---------------------------------------------------------------------------------\r |
| 2214 | \r |
| 2215 | void convert_double_to_standard (double d, unsigned short *wd)\r |
| 2216 | {\r |
| 2217 | int neg, exp;\r |
| 2218 | unsigned long mantissa;\r |
| 2219 | unsigned char *byte = (unsigned char *) &d;\r |
| 2220 | \r |
| 2221 | if (d == 0.) {\r |
| 2222 | wd[0] = wd[1] = 0;\r |
| 2223 | return;\r |
| 2224 | }\r |
| 2225 | // 7 6 5 4 0\r |
| 2226 | // d = ansi real*8 SXXX XXXX XXXX MMMM MMMM MMMM MMMM MMMM ... MMMM MMMM\r |
| 2227 | \r |
| 2228 | neg = byte[7] & 0x80;\r |
| 2229 | exp = ((byte[7] & 0x7F) << 4) | ((byte[6] & 0xF0) >> 4); // extract exponent\r |
| 2230 | exp -= 1023; // remove bias\r |
| 2231 | \r |
| 2232 | exp++; // shift to account for implied 1 we added\r |
| 2233 | \r |
| 2234 | // get 32 bits worth of mantissa. add the implied point\r |
| 2235 | mantissa = 0x80000000L | ((byte[6] & 0x0F) << 27) | (byte[5] << 19) | (byte[4] << 11) | (byte[3] << 3) | ((byte[2] & 0xE0) >> 5);\r |
| 2236 | \r |
| 2237 | // if (mantissa & (0x80000000L >> 23)) // keep 23 bits, round if necessary\r |
| 2238 | // mantissa += (0x80000000L >> 23);\r |
| 2239 | \r |
| 2240 | // DEBUG\r |
| 2241 | // printf("%8.4lf: %08lx %d\n", d, mantissa, exp);\r |
| 2242 | \r |
| 2243 | mantissa >>= (32-23); // get into low 23 bits\r |
| 2244 | \r |
| 2245 | // now turn into IBM 1130 standard precision\r |
| 2246 | \r |
| 2247 | exp += 128;\r |
| 2248 | \r |
| 2249 | if (neg)\r |
| 2250 | mantissa = (unsigned long) (- (long) mantissa); // two's complement\r |
| 2251 | \r |
| 2252 | wd[0] = (unsigned short) ((neg ? 0x8000 : 0) | ((mantissa >> (23-15)) & 0x7FFF));\r |
| 2253 | wd[1] = (unsigned short) ((mantissa & 0x00FF) << 8) | (exp & 0xFF);\r |
| 2254 | \r |
| 2255 | // DEBUG\r |
| 2256 | // printf(" D %04x%04x\n", wd[0], wd[1]);\r |
| 2257 | }\r |
| 2258 | \r |
| 2259 | // ---------------------------------------------------------------------------------\r |
| 2260 | // ---------------------------------------------------------------------------------\r |
| 2261 | \r |
| 2262 | void convert_double_to_fixed (double d, unsigned short *wd, int bexp)\r |
| 2263 | {\r |
| 2264 | int neg, exp, rshift;\r |
| 2265 | unsigned long mantissa;\r |
| 2266 | unsigned char *byte = (unsigned char *) &d;\r |
| 2267 | \r |
| 2268 | if (d == 0.) {\r |
| 2269 | wd[0] = wd[1] = 0;\r |
| 2270 | return;\r |
| 2271 | }\r |
| 2272 | \r |
| 2273 | // note: we assume that this computer uses ANSI floating point\r |
| 2274 | \r |
| 2275 | // 7 6 5 4 0\r |
| 2276 | // d = ansi real*8 SXXX XXXX XXXX MMMM MMMM MMMM MMMM MMMM ... MMMM MMMM\r |
| 2277 | \r |
| 2278 | neg = byte[7] & 0x80;\r |
| 2279 | exp = ((byte[7] & 0x7F) << 4) | ((byte[6] & 0xF0) >> 4); // extract exponent\r |
| 2280 | exp -= 1023; // remove bias\r |
| 2281 | \r |
| 2282 | exp++; // shift to account for implied 1 we added\r |
| 2283 | \r |
| 2284 | // get 32 bits worth of mantissa. add the implied point\r |
| 2285 | mantissa = 0x80000000L | ((byte[6] & 0x0F) << 27) | (byte[5] << 19) | (byte[4] << 11) | (byte[3] << 3) | ((byte[2] & 0xE0) >> 5);\r |
| 2286 | \r |
| 2287 | mantissa >>= 1; // shift it out of the sign bit\r |
| 2288 | \r |
| 2289 | // DEBUG\r |
| 2290 | // printf("%8.4lf: %08lx %d\n", d, mantissa, exp);\r |
| 2291 | \r |
| 2292 | rshift = bexp - exp;\r |
| 2293 | \r |
| 2294 | if (rshift > 0) {\r |
| 2295 | mantissa >>= rshift;\r |
| 2296 | }\r |
| 2297 | else if (rshift < 0) {\r |
| 2298 | mantissa >>= (-rshift);\r |
| 2299 | asm_warning("Fixed point overflow");\r |
| 2300 | }\r |
| 2301 | \r |
| 2302 | if (neg)\r |
| 2303 | mantissa = (unsigned long) (- (long) mantissa); // two's complement\r |
| 2304 | \r |
| 2305 | // DEBUG\r |
| 2306 | // printf(" B %08lx\n", mantissa);\r |
| 2307 | \r |
| 2308 | wd[0] = (unsigned short) ((mantissa >> 16) & 0xFFFF); // return all of the bits; no exponent here\r |
| 2309 | wd[1] = (unsigned short) (mantissa & 0xFFFF);\r |
| 2310 | }\r |
| 2311 | \r |
| 2312 | // ---------------------------------------------------------------------------------\r |
| 2313 | // ---------------------------------------------------------------------------------\r |
| 2314 | \r |
| 2315 | void getDconstant (char *tok, unsigned short *wd)\r |
| 2316 | {\r |
| 2317 | unsigned long l;\r |
| 2318 | char *b, *fmt;\r |
| 2319 | double d;\r |
| 2320 | int bexp, fixed;\r |
| 2321 | \r |
| 2322 | wd[0] = 0;\r |
| 2323 | wd[1] = 0;\r |
| 2324 | \r |
| 2325 | if (strchr(tok, '.') == NULL && strchr(tok, 'B') == NULL && strchr(tok, 'E') == NULL) {\r |
| 2326 | fmt = "%ld";\r |
| 2327 | if (*tok == '/') { // I don't see that this is legal but can't hurt to allow it\r |
| 2328 | fmt = "%lx";\r |
| 2329 | tok++;\r |
| 2330 | }\r |
| 2331 | if (sscanf(tok, fmt, &l) != 1) { // no decimal means it's an integer?\r |
| 2332 | asm_error("Syntax error in constant");\r |
| 2333 | }\r |
| 2334 | else {\r |
| 2335 | wd[0] = (unsigned short) ((l >> 16) & 0xFFFF); // high word\r |
| 2336 | wd[1] = (unsigned short) (l & 0xFFFF); // low word\r |
| 2337 | }\r |
| 2338 | return;\r |
| 2339 | }\r |
| 2340 | \r |
| 2341 | fixed = 0;\r |
| 2342 | if ((b = strchr(tok, 'B')) != NULL) {\r |
| 2343 | fixed = 1;\r |
| 2344 | bexp = atoi(b+1);\r |
| 2345 | *b = '\0'; // truncate at the b\r |
| 2346 | }\r |
| 2347 | if (sscanf(tok, "%lg", &d) != 1) {\r |
| 2348 | asm_error("Syntax error in constant");\r |
| 2349 | return;\r |
| 2350 | }\r |
| 2351 | \r |
| 2352 | if (fixed)\r |
| 2353 | convert_double_to_fixed(d, wd, bexp);\r |
| 2354 | else\r |
| 2355 | convert_double_to_standard(d, wd);\r |
| 2356 | }\r |
| 2357 | \r |
| 2358 | // ---------------------------------------------------------------------------------\r |
| 2359 | // If the input value is an integer with no decimal point and no B or E,\r |
| 2360 | // DEC generates a double INTEGER value.\r |
| 2361 | // IBM documentation ranges from ambiguous to wrong on this point, but\r |
| 2362 | // examination of the DMS microfiche supports this.\r |
| 2363 | // ---------------------------------------------------------------------------------\r |
| 2364 | \r |
| 2365 | void x_dec (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2366 | { \r |
| 2367 | unsigned short wd[2];\r |
| 2368 | \r |
| 2369 | org_advanced = 2; // assume * means address after this location, since it's +1 for dc?\r |
| 2370 | \r |
| 2371 | org_even(); // even address is implied\r |
| 2372 | setw(0, org, FALSE); // display the origin\r |
| 2373 | \r |
| 2374 | if (*label) // define label\r |
| 2375 | set_symbol(label, org, TRUE, relocate);\r |
| 2376 | \r |
| 2377 | // just one!?\r |
| 2378 | getDconstant(arg, wd);\r |
| 2379 | writew(wd[0], FALSE); // write hiword, then loword\r |
| 2380 | writew(wd[1], FALSE);\r |
| 2381 | \r |
| 2382 | // pick up values, comma delimited\r |
| 2383 | // for (tok = strtok(arg, ","); tok != NULL; tok = strtok(NULL, ",")) {\r |
| 2384 | // getDconstant(tok, wd);\r |
| 2385 | //\r |
| 2386 | // writew(wd[0], FALSE); // write hiword, then loword\r |
| 2387 | // writew(wd[1], FALSE);\r |
| 2388 | }\r |
| 2389 | \r |
| 2390 | // ---------------------------------------------------------------------------------\r |
| 2391 | // DECS directive. Writes just the high word of a DEC value\r |
| 2392 | // ---------------------------------------------------------------------------------\r |
| 2393 | \r |
| 2394 | void x_decs (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2395 | { \r |
| 2396 | unsigned short wd[2];\r |
| 2397 | \r |
| 2398 | org_advanced = 1; // assume * means address after this location\r |
| 2399 | \r |
| 2400 | setw(0, org, FALSE); // display the origin\r |
| 2401 | \r |
| 2402 | if (*label) // define label\r |
| 2403 | set_symbol(label, org, TRUE, relocate);\r |
| 2404 | \r |
| 2405 | getDconstant(arg, wd);\r |
| 2406 | writew(wd[0], FALSE); // write hiword ONLY\r |
| 2407 | }\r |
| 2408 | \r |
| 2409 | // ---------------------------------------------------------------------------------\r |
| 2410 | // ---------------------------------------------------------------------------------\r |
| 2411 | \r |
| 2412 | void x_xflc (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2413 | { \r |
| 2414 | char *tok, *b;\r |
| 2415 | double d;\r |
| 2416 | int bexp, fixed;\r |
| 2417 | unsigned short wd[3];\r |
| 2418 | \r |
| 2419 | org_advanced = 2; // who knows?\r |
| 2420 | \r |
| 2421 | setw(0, org, FALSE); // display the origin\r |
| 2422 | \r |
| 2423 | if (*label) // define label\r |
| 2424 | set_symbol(label, org, TRUE, relocate);\r |
| 2425 | // pick up values, comma delimited\r |
| 2426 | for (tok = strtok(arg, ","); tok != NULL; tok = strtok(NULL, ",")) {\r |
| 2427 | bexp = 0;\r |
| 2428 | if ((b = strchr(tok, 'B')) != NULL) {\r |
| 2429 | bexp = atoi(b+1);\r |
| 2430 | fixed = TRUE;\r |
| 2431 | *b = '\0'; // truncate at the b\r |
| 2432 | asm_warning("Fixed point extended floating constant?");\r |
| 2433 | }\r |
| 2434 | \r |
| 2435 | if (sscanf(tok, "%lg", &d) != 1) {\r |
| 2436 | asm_error("Syntax error in constant");\r |
| 2437 | d = 0.;\r |
| 2438 | }\r |
| 2439 | \r |
| 2440 | convert_double_to_extended(d, wd);\r |
| 2441 | \r |
| 2442 | writew(wd[0], ABSOLUTE);\r |
| 2443 | writew(wd[1], ABSOLUTE);\r |
| 2444 | writew(wd[2], ABSOLUTE);\r |
| 2445 | }\r |
| 2446 | }\r |
| 2447 | \r |
| 2448 | // ---------------------------------------------------------------------------------\r |
| 2449 | // x_equ - EQU directive\r |
| 2450 | // ---------------------------------------------------------------------------------\r |
| 2451 | \r |
| 2452 | void x_equ (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2453 | { \r |
| 2454 | EXPR expr;\r |
| 2455 | \r |
| 2456 | org_advanced = FALSE; // * means this address, not incremented\r |
| 2457 | \r |
| 2458 | getexpr(arg, FALSE, &expr);\r |
| 2459 | \r |
| 2460 | setw(0, expr.value, expr.relative); // show this as address\r |
| 2461 | \r |
| 2462 | if (*label) // EQU is all about defining labels, better have one\r |
| 2463 | set_symbol(label, expr.value, TRUE, expr.relative);\r |
| 2464 | // else // IBM assembler doesn't complain about this\r |
| 2465 | // asm_error("EQU without label?");\r |
| 2466 | }\r |
| 2467 | \r |
| 2468 | // ---------------------------------------------------------------------------------\r |
| 2469 | // x_lorg - LORG directive -- output queued literal values\r |
| 2470 | // ---------------------------------------------------------------------------------\r |
| 2471 | \r |
| 2472 | void x_lorg (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2473 | {\r |
| 2474 | org_advanced = FALSE; // * means this address (not used, though)\r |
| 2475 | output_literals(FALSE); // generate .DC's for queued literal values\r |
| 2476 | }\r |
| 2477 | \r |
| 2478 | // ---------------------------------------------------------------------------------\r |
| 2479 | // x_abs - ABS directive\r |
| 2480 | // ---------------------------------------------------------------------------------\r |
| 2481 | \r |
| 2482 | void x_abs (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2483 | {\r |
| 2484 | if (assembled)\r |
| 2485 | asm_error("ABS must be first statement");\r |
| 2486 | \r |
| 2487 | relocate = ABSOLUTE;\r |
| 2488 | \r |
| 2489 | switch (progtype) {\r |
| 2490 | case PROGTYPE_ABSOLUTE:\r |
| 2491 | case PROGTYPE_RELOCATABLE:\r |
| 2492 | progtype = PROGTYPE_ABSOLUTE; // change program type, still assumed to be mainline\r |
| 2493 | break;\r |
| 2494 | \r |
| 2495 | case PROGTYPE_LIBF:\r |
| 2496 | case PROGTYPE_CALL:\r |
| 2497 | case PROGTYPE_ISSLIBF:\r |
| 2498 | case PROGTYPE_ISSCALL:\r |
| 2499 | case PROGTYPE_ILS:\r |
| 2500 | asm_error("ABS not allowed with LIBF, ENT, ILS or ISS");\r |
| 2501 | break;\r |
| 2502 | \r |
| 2503 | default:\r |
| 2504 | bail("in x_libr, can't happen");\r |
| 2505 | }\r |
| 2506 | }\r |
| 2507 | \r |
| 2508 | // ---------------------------------------------------------------------------------\r |
| 2509 | // x_call - ORG pseudo-op\r |
| 2510 | // ---------------------------------------------------------------------------------\r |
| 2511 | \r |
| 2512 | void x_call (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2513 | {\r |
| 2514 | unsigned short words[2];\r |
| 2515 | static struct tag_op *bsi = NULL;\r |
| 2516 | \r |
| 2517 | if (*label) // define label\r |
| 2518 | set_symbol(label, org, TRUE, relocate);\r |
| 2519 | \r |
| 2520 | if (! *arg) {\r |
| 2521 | asm_error("CALL missing argument");\r |
| 2522 | return;\r |
| 2523 | }\r |
| 2524 | \r |
| 2525 | if (pass == 1) { // it will take two words in any case\r |
| 2526 | org += 2;\r |
| 2527 | return;\r |
| 2528 | }\r |
| 2529 | \r |
| 2530 | setw(0, org, FALSE); // display origin\r |
| 2531 | \r |
| 2532 | if (lookup_symbol(arg, FALSE) != NULL) { // it's a defined symbol?\r |
| 2533 | if (bsi == NULL)\r |
| 2534 | if ((bsi = lookup_op("BSI")) == NULL)\r |
| 2535 | bail("Can't find BSI op");\r |
| 2536 | \r |
| 2537 | (bsi->handler)(bsi, "", "L", arg);\r |
| 2538 | }\r |
| 2539 | else {\r |
| 2540 | namecode(words, arg); // emit namecode for loader\r |
| 2541 | \r |
| 2542 | writetwo();\r |
| 2543 | writew(words[0], CALL);\r |
| 2544 | writew(words[1], ABSOLUTE);\r |
| 2545 | }\r |
| 2546 | }\r |
| 2547 | \r |
| 2548 | // ---------------------------------------------------------------------------------\r |
| 2549 | // x_org - ORG directive\r |
| 2550 | // ---------------------------------------------------------------------------------\r |
| 2551 | \r |
| 2552 | void x_org (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2553 | {\r |
| 2554 | EXPR expr;\r |
| 2555 | \r |
| 2556 | org_advanced = FALSE; // * means this address\r |
| 2557 | \r |
| 2558 | if (*label) // label is defined BEFORE the new origin is set!!!\r |
| 2559 | set_symbol(label, org, TRUE, relocate);\r |
| 2560 | \r |
| 2561 | if (getexpr(arg, FALSE, &expr) != S_DEFINED)\r |
| 2562 | return;\r |
| 2563 | \r |
| 2564 | setorg(expr.value); // set origin to this value\r |
| 2565 | }\r |
| 2566 | \r |
| 2567 | // ---------------------------------------------------------------------------------\r |
| 2568 | // x_end - END directive\r |
| 2569 | // ---------------------------------------------------------------------------------\r |
| 2570 | \r |
| 2571 | void x_end (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2572 | {\r |
| 2573 | EXPR expr;\r |
| 2574 | \r |
| 2575 | org_advanced = FALSE; // * means this address\r |
| 2576 | \r |
| 2577 | if (*arg) { // they're specifing the program start address\r |
| 2578 | if (getexpr(arg, FALSE, &expr) == S_DEFINED)\r |
| 2579 | pta = expr.value;\r |
| 2580 | }\r |
| 2581 | \r |
| 2582 | if (*label) // define label\r |
| 2583 | set_symbol(label, org, TRUE, relocate);\r |
| 2584 | \r |
| 2585 | setw(0, org, FALSE); // display origin\r |
| 2586 | \r |
| 2587 | ended = TRUE; // assembly is done, stop reading file\r |
| 2588 | }\r |
| 2589 | \r |
| 2590 | // ---------------------------------------------------------------------------------\r |
| 2591 | // x_ent - ENT op\r |
| 2592 | // ---------------------------------------------------------------------------------\r |
| 2593 | \r |
| 2594 | void x_ent (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2595 | {\r |
| 2596 | PSYMBOL s;\r |
| 2597 | \r |
| 2598 | org_advanced = FALSE; // * means this address\r |
| 2599 | \r |
| 2600 | if (pass < 2)\r |
| 2601 | return;\r |
| 2602 | \r |
| 2603 | // if (*label) // define label\r |
| 2604 | // set_symbol(label, org, TRUE, relocate);\r |
| 2605 | //\r |
| 2606 | // setw(0, org, FALSE); // display origin\r |
| 2607 | \r |
| 2608 | if (! *arg)\r |
| 2609 | asm_error("No entry label specified");\r |
| 2610 | \r |
| 2611 | else if ((s = lookup_symbol(arg, FALSE)) == NULL)\r |
| 2612 | asm_error("Entry symbol %s not defined", arg);\r |
| 2613 | \r |
| 2614 | else if (nentries >= MAXENTRIES)\r |
| 2615 | asm_error("Too many entries, limit is %d", MAXENTRIES);\r |
| 2616 | \r |
| 2617 | else\r |
| 2618 | entry[nentries++] = s; // save symbol pointer\r |
| 2619 | \r |
| 2620 | switch (progtype) {\r |
| 2621 | case PROGTYPE_ABSOLUTE:\r |
| 2622 | asm_error("ENT not allowed with ABS");\r |
| 2623 | break;\r |
| 2624 | case PROGTYPE_RELOCATABLE:\r |
| 2625 | progtype = PROGTYPE_CALL;\r |
| 2626 | break;\r |
| 2627 | case PROGTYPE_LIBF:\r |
| 2628 | case PROGTYPE_CALL:\r |
| 2629 | case PROGTYPE_ISSLIBF:\r |
| 2630 | case PROGTYPE_ISSCALL:\r |
| 2631 | break;\r |
| 2632 | case PROGTYPE_ILS:\r |
| 2633 | asm_error("Can't mix ENT and ILS, can you?");\r |
| 2634 | break;\r |
| 2635 | default:\r |
| 2636 | bail("in x_libr, can't happen");\r |
| 2637 | }\r |
| 2638 | }\r |
| 2639 | \r |
| 2640 | // ---------------------------------------------------------------------------------\r |
| 2641 | // declare a libf-type subprogram\r |
| 2642 | // ---------------------------------------------------------------------------------\r |
| 2643 | \r |
| 2644 | void x_libr (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2645 | {\r |
| 2646 | switch (progtype) {\r |
| 2647 | case PROGTYPE_ABSOLUTE:\r |
| 2648 | asm_error("LIBR not allowed with ABS");\r |
| 2649 | break;\r |
| 2650 | case PROGTYPE_RELOCATABLE:\r |
| 2651 | case PROGTYPE_LIBF:\r |
| 2652 | case PROGTYPE_CALL:\r |
| 2653 | progtype = PROGTYPE_LIBF;\r |
| 2654 | break;\r |
| 2655 | case PROGTYPE_ISSLIBF:\r |
| 2656 | case PROGTYPE_ISSCALL:\r |
| 2657 | progtype = PROGTYPE_ISSLIBF;\r |
| 2658 | break;\r |
| 2659 | case PROGTYPE_ILS:\r |
| 2660 | asm_error("Can't use LIBR in an ILS");\r |
| 2661 | break;\r |
| 2662 | default:\r |
| 2663 | bail("in x_libr, can't happen");\r |
| 2664 | }\r |
| 2665 | }\r |
| 2666 | \r |
| 2667 | // ---------------------------------------------------------------------------------\r |
| 2668 | // x_ils - ILS directive\r |
| 2669 | // ---------------------------------------------------------------------------------\r |
| 2670 | \r |
| 2671 | void x_ils (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2672 | {\r |
| 2673 | switch (progtype) {\r |
| 2674 | case PROGTYPE_ABSOLUTE:\r |
| 2675 | asm_error("ILS not allowed with ABS");\r |
| 2676 | break;\r |
| 2677 | case PROGTYPE_RELOCATABLE:\r |
| 2678 | case PROGTYPE_ILS:\r |
| 2679 | progtype = PROGTYPE_ILS;\r |
| 2680 | break;\r |
| 2681 | case PROGTYPE_LIBF:\r |
| 2682 | case PROGTYPE_CALL:\r |
| 2683 | asm_error("Invalid placement of ILS");\r |
| 2684 | break;\r |
| 2685 | case PROGTYPE_ISSLIBF:\r |
| 2686 | case PROGTYPE_ISSCALL:\r |
| 2687 | break;\r |
| 2688 | default:\r |
| 2689 | bail("in x_libr, can't happen");\r |
| 2690 | }\r |
| 2691 | \r |
| 2692 | intlevel_primary = atoi(mods);\r |
| 2693 | }\r |
| 2694 | \r |
| 2695 | // ---------------------------------------------------------------------------------\r |
| 2696 | // x_iss - ISS directive\r |
| 2697 | // ---------------------------------------------------------------------------------\r |
| 2698 | \r |
| 2699 | void x_iss (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2700 | {\r |
| 2701 | char *tok;\r |
| 2702 | \r |
| 2703 | switch (progtype) {\r |
| 2704 | case PROGTYPE_ABSOLUTE:\r |
| 2705 | asm_error("ISS not allowed with ABS");\r |
| 2706 | break;\r |
| 2707 | case PROGTYPE_RELOCATABLE:\r |
| 2708 | case PROGTYPE_CALL:\r |
| 2709 | case PROGTYPE_ISSCALL:\r |
| 2710 | progtype = PROGTYPE_ISSCALL;\r |
| 2711 | break;\r |
| 2712 | case PROGTYPE_LIBF:\r |
| 2713 | case PROGTYPE_ISSLIBF:\r |
| 2714 | progtype = PROGTYPE_ISSLIBF;\r |
| 2715 | break;\r |
| 2716 | case PROGTYPE_ILS:\r |
| 2717 | asm_error("Can't mix ISS and ILS");\r |
| 2718 | default:\r |
| 2719 | bail("in x_libr, can't happen");\r |
| 2720 | }\r |
| 2721 | \r |
| 2722 | iss_number = atoi(mods); // get ISS number\r |
| 2723 | \r |
| 2724 | opfield[16] = '\0'; // be sure not to look too far into this\r |
| 2725 | \r |
| 2726 | nintlevels = 0; // # of interrupt levels for ISS\r |
| 2727 | intlevel_primary = 0; // primary level for ISS and level for ILS\r |
| 2728 | intlevel_secondary = 0; // secondary level for ISS\r |
| 2729 | \r |
| 2730 | if ((tok = strtok(opfield, " ")) == NULL)\r |
| 2731 | asm_error("ISS missing entry label");\r |
| 2732 | else\r |
| 2733 | x_ent(NULL, label, "", arg); // process as an ENT\r |
| 2734 | \r |
| 2735 | if ((tok = strtok(NULL, " ")) != NULL) { // get associated levels\r |
| 2736 | nintlevels++;\r |
| 2737 | intlevel_primary = atoi(tok);\r |
| 2738 | }\r |
| 2739 | \r |
| 2740 | if ((tok = strtok(NULL, " ")) != NULL) {\r |
| 2741 | nintlevels++;\r |
| 2742 | intlevel_secondary = atoi(tok);\r |
| 2743 | }\r |
| 2744 | }\r |
| 2745 | \r |
| 2746 | void x_spr (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2747 | {\r |
| 2748 | realmode = REALMODE_STANDARD;\r |
| 2749 | }\r |
| 2750 | \r |
| 2751 | void x_epr (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2752 | {\r |
| 2753 | realmode = REALMODE_EXTENDED;\r |
| 2754 | }\r |
| 2755 | \r |
| 2756 | void x_dsa (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2757 | {\r |
| 2758 | unsigned short words[2];\r |
| 2759 | \r |
| 2760 | setw(0, org, FALSE); // display origin\r |
| 2761 | \r |
| 2762 | if (*label) // define label\r |
| 2763 | set_symbol(label, org, TRUE, relocate);\r |
| 2764 | \r |
| 2765 | if (! *arg) {\r |
| 2766 | asm_error("DSA missing filename");\r |
| 2767 | }\r |
| 2768 | else {\r |
| 2769 | namecode(words, arg); \r |
| 2770 | writetwo();\r |
| 2771 | writew(words[0], CALL); // special relocation bits here 3 and 1\r |
| 2772 | writew(words[1], RELATIVE);\r |
| 2773 | }\r |
| 2774 | }\r |
| 2775 | \r |
| 2776 | void x_link (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2777 | {\r |
| 2778 | unsigned short words[2];\r |
| 2779 | char nline[128];\r |
| 2780 | \r |
| 2781 | setw(0, org, FALSE); // display origin\r |
| 2782 | \r |
| 2783 | if (*label) // define label\r |
| 2784 | set_symbol(label, org, TRUE, relocate);\r |
| 2785 | \r |
| 2786 | if (! *arg) {\r |
| 2787 | asm_error("LINK missing program name");\r |
| 2788 | }\r |
| 2789 | else {\r |
| 2790 | format_line(nline, label, "CALL", "", "$LINK", "");\r |
| 2791 | parse_line(nline);\r |
| 2792 | \r |
| 2793 | namecode(words, arg); \r |
| 2794 | writew(words[0], ABSOLUTE); // special relocation bits here 3 and 1\r |
| 2795 | writew(words[1], ABSOLUTE);\r |
| 2796 | }\r |
| 2797 | }\r |
| 2798 | \r |
| 2799 | void x_libf (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2800 | {\r |
| 2801 | unsigned short words[2];\r |
| 2802 | \r |
| 2803 | if (*label) // define label\r |
| 2804 | set_symbol(label, org, TRUE, relocate);\r |
| 2805 | \r |
| 2806 | if (! *arg) {\r |
| 2807 | asm_error("LIBF missing argument");\r |
| 2808 | return;\r |
| 2809 | }\r |
| 2810 | \r |
| 2811 | if (pass == 1) { // it will take one words in any case\r |
| 2812 | org++;\r |
| 2813 | return;\r |
| 2814 | }\r |
| 2815 | \r |
| 2816 | setw(0, org, FALSE); // display origin\r |
| 2817 | \r |
| 2818 | namecode(words, arg); // emit namecode for loader\r |
| 2819 | \r |
| 2820 | writetwo();\r |
| 2821 | writew(words[0], LIBF); // this one does NOT advance org!\r |
| 2822 | writew(words[1], ABSOLUTE);\r |
| 2823 | }\r |
| 2824 | \r |
| 2825 | void x_file (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2826 | {\r |
| 2827 | int i, n, r;\r |
| 2828 | EXPR vals[5];\r |
| 2829 | char *tok;\r |
| 2830 | \r |
| 2831 | for (i = 0; i < 5; i++) {\r |
| 2832 | if ((tok = strtok(arg, ",")) == NULL) {\r |
| 2833 | asm_error("FILE has insufficient arguments");\r |
| 2834 | return;\r |
| 2835 | }\r |
| 2836 | arg = NULL; // for next strtok call\r |
| 2837 | \r |
| 2838 | if (i == 3) {\r |
| 2839 | if (strcmpi(tok, "U") != 0)\r |
| 2840 | asm_error("Argument 4 must be the letter U");\r |
| 2841 | }\r |
| 2842 | else if (getexpr(tok, FALSE, &vals[i]) == S_DEFINED) {\r |
| 2843 | if (i <= 3 && vals[i].relative)\r |
| 2844 | asm_error("Argument %d must be absolute", i+1);\r |
| 2845 | else if (pass == 2 && vals[i].value == 0)\r |
| 2846 | asm_error("Argument %d must be nonzero", i+1);\r |
| 2847 | }\r |
| 2848 | }\r |
| 2849 | \r |
| 2850 | writew(vals[0].value, ABSOLUTE);\r |
| 2851 | writew(vals[1].value, ABSOLUTE);\r |
| 2852 | writew(vals[2].value, ABSOLUTE);\r |
| 2853 | writew(vals[4].value, vals[i].relative);\r |
| 2854 | writew(0, ABSOLUTE);\r |
| 2855 | n = MAX(1, vals[2].value);\r |
| 2856 | r = 320/n;\r |
| 2857 | writew(r, ABSOLUTE);\r |
| 2858 | r = MAX(1, r);\r |
| 2859 | writew((16*vals[1].value)/r, ABSOLUTE);\r |
| 2860 | \r |
| 2861 | if (pass == 2)\r |
| 2862 | ndefined_files++;\r |
| 2863 | }\r |
| 2864 | \r |
| 2865 | // ---------------------------------------------------------------------------------\r |
| 2866 | // x_trap - place to set a breakpoint\r |
| 2867 | // ---------------------------------------------------------------------------------\r |
| 2868 | \r |
| 2869 | void x_trap (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2870 | {\r |
| 2871 | // debugging breakpoint\r |
| 2872 | }\r |
| 2873 | \r |
| 2874 | // ---------------------------------------------------------------------------------\r |
| 2875 | // x_ces - .CES directive (nonstandard). Specify a value for the console entry\r |
| 2876 | // switches. When this program is loaded into the simulator, the switches will\r |
| 2877 | // be set accordingly. Handy for bootstraps and other programs that read\r |
| 2878 | // the switches.\r |
| 2879 | // ---------------------------------------------------------------------------------\r |
| 2880 | \r |
| 2881 | void x_ces (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2882 | {\r |
| 2883 | EXPR expr;\r |
| 2884 | \r |
| 2885 | if (outmode != OUTMODE_LOAD) // this works only in our loader format\r |
| 2886 | return;\r |
| 2887 | \r |
| 2888 | if (getexpr(arg, FALSE, &expr) != S_DEFINED)\r |
| 2889 | return;\r |
| 2890 | \r |
| 2891 | if (pass == 2)\r |
| 2892 | fprintf(fout, "S%04x" ENDLINE, expr.value & 0xFFFF);\r |
| 2893 | }\r |
| 2894 | \r |
| 2895 | // ---------------------------------------------------------------------------------\r |
| 2896 | // x_bss - BSS directive - reserve space in core\r |
| 2897 | // ---------------------------------------------------------------------------------\r |
| 2898 | \r |
| 2899 | void x_bss (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2900 | {\r |
| 2901 | EXPR expr;\r |
| 2902 | \r |
| 2903 | org_advanced = FALSE; // * means this address\r |
| 2904 | \r |
| 2905 | if (! *arg) {\r |
| 2906 | expr.value = 0;\r |
| 2907 | expr.relative = ABSOLUTE;\r |
| 2908 | }\r |
| 2909 | else if (getexpr(arg, FALSE, &expr) != S_DEFINED)\r |
| 2910 | return;\r |
| 2911 | \r |
| 2912 | if (strchr(mods, 'E') != NULL) // force even address\r |
| 2913 | org_even();\r |
| 2914 | \r |
| 2915 | if (expr.relative)\r |
| 2916 | asm_error("BSS size must be an absolute value");\r |
| 2917 | \r |
| 2918 | setw(0, org, FALSE); // display origin\r |
| 2919 | \r |
| 2920 | if (*label) // define label\r |
| 2921 | set_symbol(label, org, TRUE, relocate);\r |
| 2922 | \r |
| 2923 | expr.value &= 0xFFFF; // truncate to 16 bits\r |
| 2924 | \r |
| 2925 | if (expr.value & 0x8000)\r |
| 2926 | asm_warning("Negative BSS size");\r |
| 2927 | else if (expr.value > 0) {\r |
| 2928 | if (outmode == OUTMODE_LOAD) {\r |
| 2929 | org += expr.value; // advance the origin by appropriate number of words\r |
| 2930 | if (pass == 2) // emit new load address in output file\r |
| 2931 | fprintf(fout, "@%04x%s" ENDLINE, org & 0xFFFF, relocate ? "R" : "");\r |
| 2932 | }\r |
| 2933 | else {\r |
| 2934 | org += expr.value; // advance the origin by appropriate number of words\r |
| 2935 | if (pass == 2)\r |
| 2936 | bincard_setorg(org);\r |
| 2937 | }\r |
| 2938 | }\r |
| 2939 | }\r |
| 2940 | \r |
| 2941 | // ---------------------------------------------------------------------------------\r |
| 2942 | // x_bes - Block Ended by Symbol directive. Like BSS but label gets address AFTER the space, instead of first address\r |
| 2943 | // ---------------------------------------------------------------------------------\r |
| 2944 | \r |
| 2945 | void x_bes (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2946 | {\r |
| 2947 | EXPR expr;\r |
| 2948 | \r |
| 2949 | org_advanced = FALSE; // * means this address\r |
| 2950 | \r |
| 2951 | if (! *arg) { // arg field = space\r |
| 2952 | expr.value = 0;\r |
| 2953 | expr.relative = ABSOLUTE;\r |
| 2954 | }\r |
| 2955 | else if (getexpr(arg, FALSE, &expr) != S_DEFINED)\r |
| 2956 | return;\r |
| 2957 | \r |
| 2958 | if (strchr(mods, 'E') != NULL && (org & 1) != 0)\r |
| 2959 | org_even(); // force even address\r |
| 2960 | \r |
| 2961 | if (expr.relative)\r |
| 2962 | asm_error("BES size must be an absolute value");\r |
| 2963 | \r |
| 2964 | if (expr.value < 0)\r |
| 2965 | asm_warning("Negative BES size");\r |
| 2966 | \r |
| 2967 | else if (expr.value > 0) {\r |
| 2968 | setw(0, org+expr.value, FALSE); // display NEW origin\r |
| 2969 | \r |
| 2970 | if (outmode == OUTMODE_LOAD) {\r |
| 2971 | org += expr.value; // advance the origin\r |
| 2972 | if (pass == 2) // emit new load address in output file\r |
| 2973 | fprintf(fout, "@%04x%s" ENDLINE, org & 0xFFFF, relocate ? "R" : "");\r |
| 2974 | }\r |
| 2975 | else {\r |
| 2976 | org += expr.value; // advance the origin\r |
| 2977 | bincard_setorg(org);\r |
| 2978 | }\r |
| 2979 | }\r |
| 2980 | \r |
| 2981 | if (*label) // NOW define the label\r |
| 2982 | set_symbol(label, org, TRUE, relocate);\r |
| 2983 | }\r |
| 2984 | \r |
| 2985 | // ---------------------------------------------------------------------------------\r |
| 2986 | // x_dmes - DMES define message directive. Various encodings, none pretty.\r |
| 2987 | // ---------------------------------------------------------------------------------\r |
| 2988 | \r |
| 2989 | int dmes_wd;\r |
| 2990 | int dmes_nc;\r |
| 2991 | enum {CODESET_CONSOLE, CODESET_1403, CODESET_1132, CODESET_EBCDIC} dmes_cs;\r |
| 2992 | void stuff_dmes (int ch, int rpt);\r |
| 2993 | \r |
| 2994 | void x_dmes (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 2995 | {\r |
| 2996 | int rpt;\r |
| 2997 | char *c = opfield;\r |
| 2998 | BOOL cont = FALSE;\r |
| 2999 | \r |
| 3000 | if (dmes_saved) { // previous DMES had an odd character saved\r |
| 3001 | dmes_wd = dmes_savew;\r |
| 3002 | dmes_nc = 1; // stick it into the outbut buffer\r |
| 3003 | }\r |
| 3004 | else\r |
| 3005 | dmes_nc = dmes_wd = 0; // clear output buffer\r |
| 3006 | \r |
| 3007 | trim(opfield); // remove trailing blanks from rest of input line (use whole thing)\r |
| 3008 | setw(0, org, FALSE); // display origin\r |
| 3009 | \r |
| 3010 | if (*label) // define label\r |
| 3011 | set_symbol(label, org, TRUE, relocate);\r |
| 3012 | \r |
| 3013 | if (strchr(mods, '1') != NULL) // determine the encoding scheme\r |
| 3014 | dmes_cs = CODESET_1403;\r |
| 3015 | else if (strchr(mods, '2') != NULL)\r |
| 3016 | dmes_cs = CODESET_1132;\r |
| 3017 | else if (strchr(mods, '0') != NULL || ! *mods)\r |
| 3018 | dmes_cs = CODESET_CONSOLE;\r |
| 3019 | else {\r |
| 3020 | asm_error("Invalid printer code in tag field");\r |
| 3021 | dmes_cs = CODESET_EBCDIC;\r |
| 3022 | }\r |
| 3023 | \r |
| 3024 | while (*c) { // pick up characters\r |
| 3025 | if (*c == '\'') { // quote (') is the escape character\r |
| 3026 | c++;\r |
| 3027 | \r |
| 3028 | rpt = 0; // get repeat count\r |
| 3029 | while (BETWEEN(*c, '0', '9')) {\r |
| 3030 | rpt = rpt*10 + *c++ - '0';\r |
| 3031 | }\r |
| 3032 | if (rpt <= 0) // no count = insert one copy\r |
| 3033 | rpt = 1;\r |
| 3034 | \r |
| 3035 | switch (*c) { // handle escape codes\r |
| 3036 | case '\'':\r |
| 3037 | stuff_dmes(*c, 1);\r |
| 3038 | break;\r |
| 3039 | \r |
| 3040 | case 'E':\r |
| 3041 | *c = '\0'; // end\r |
| 3042 | break;\r |
| 3043 | \r |
| 3044 | case 'X':\r |
| 3045 | case 'S':\r |
| 3046 | stuff_dmes(' ', rpt);\r |
| 3047 | break;\r |
| 3048 | \r |
| 3049 | case 'F':\r |
| 3050 | stuff_dmes(*++c, rpt); // repeat character\r |
| 3051 | break;\r |
| 3052 | \r |
| 3053 | case ' ':\r |
| 3054 | case '\0':\r |
| 3055 | cont = TRUE;\r |
| 3056 | *c = '\0'; // end\r |
| 3057 | break;\r |
| 3058 | \r |
| 3059 | case 'T':\r |
| 3060 | if (dmes_cs != CODESET_CONSOLE) {\r |
| 3061 | badcode: asm_error("Invalid ' escape for selected printer");\r |
| 3062 | break;\r |
| 3063 | }\r |
| 3064 | stuff_dmes(0x41, -rpt); // tab\r |
| 3065 | break;\r |
| 3066 | \r |
| 3067 | case 'D':\r |
| 3068 | if (dmes_cs != CODESET_CONSOLE) goto badcode;\r |
| 3069 | stuff_dmes(0x11, -rpt); // backspace\r |
| 3070 | break;\r |
| 3071 | \r |
| 3072 | case 'B':\r |
| 3073 | if (dmes_cs != CODESET_CONSOLE) goto badcode;\r |
| 3074 | stuff_dmes(0x05, -rpt); // black\r |
| 3075 | break;\r |
| 3076 | \r |
| 3077 | case 'A':\r |
| 3078 | if (dmes_cs != CODESET_CONSOLE) goto badcode;\r |
| 3079 | stuff_dmes(0x09, -rpt); // red\r |
| 3080 | break;\r |
| 3081 | \r |
| 3082 | case 'R':\r |
| 3083 | if (dmes_cs != CODESET_CONSOLE) goto badcode;\r |
| 3084 | stuff_dmes(0x81, -rpt); // return\r |
| 3085 | break;\r |
| 3086 | \r |
| 3087 | case 'L':\r |
| 3088 | if (dmes_cs != CODESET_CONSOLE) goto badcode;\r |
| 3089 | stuff_dmes(0x03, -rpt); // line feed\r |
| 3090 | break;\r |
| 3091 | \r |
| 3092 | default:\r |
| 3093 | asm_error("Invalid ' escape in DMES");\r |
| 3094 | *c = '\0';\r |
| 3095 | break;\r |
| 3096 | }\r |
| 3097 | }\r |
| 3098 | else // just copy literal character\r |
| 3099 | stuff_dmes(*c, 1);\r |
| 3100 | \r |
| 3101 | if (*c)\r |
| 3102 | c++;\r |
| 3103 | }\r |
| 3104 | \r |
| 3105 | dmes_saved = FALSE;\r |
| 3106 | \r |
| 3107 | if (dmes_nc) { // odd number of characters\r |
| 3108 | if (cont) {\r |
| 3109 | dmes_saved = TRUE;\r |
| 3110 | dmes_savew = dmes_wd; // save for next time\r |
| 3111 | }\r |
| 3112 | else\r |
| 3113 | stuff_dmes(' ', 1); // pad with a space to force out even # of characters\r |
| 3114 | }\r |
| 3115 | }\r |
| 3116 | \r |
| 3117 | // ---------------------------------------------------------------------------------\r |
| 3118 | // stuff_dmes - insert 'rpt' copies of character 'ch' into output words\r |
| 3119 | // ---------------------------------------------------------------------------------\r |
| 3120 | \r |
| 3121 | void stuff_dmes (int ch, int rpt)\r |
| 3122 | {\r |
| 3123 | int nch, i; // nch is translated output value\r |
| 3124 | \r |
| 3125 | if (rpt < 0) { // negative repeat means no translation needed\r |
| 3126 | rpt = -rpt;\r |
| 3127 | nch = ch;\r |
| 3128 | }\r |
| 3129 | else {\r |
| 3130 | switch (dmes_cs) {\r |
| 3131 | case CODESET_CONSOLE:\r |
| 3132 | nch = 0x21;\r |
| 3133 | for (i = 0; i < 256; i++) {\r |
| 3134 | if (conout_to_ascii[i] == ch) {\r |
| 3135 | nch = i;\r |
| 3136 | break;\r |
| 3137 | }\r |
| 3138 | }\r |
| 3139 | break;\r |
| 3140 | \r |
| 3141 | case CODESET_EBCDIC:\r |
| 3142 | nch = ascii_to_ebcdic_table[ch & 0x7F];\r |
| 3143 | if (nch == 0)\r |
| 3144 | nch = 0x7F;\r |
| 3145 | break;\r |
| 3146 | \r |
| 3147 | case CODESET_1403:\r |
| 3148 | nch = ascii_to_1403_table[ch & 0x7F];\r |
| 3149 | if (nch == 0)\r |
| 3150 | nch = 0x7F;\r |
| 3151 | break;\r |
| 3152 | \r |
| 3153 | case CODESET_1132:\r |
| 3154 | nch = 0x40;\r |
| 3155 | for (i = 0; i < WHEELCHARS_1132; i++) {\r |
| 3156 | if (codewheel1132[i].ascii == ch) {\r |
| 3157 | nch = codewheel1132[i].ebcdic;\r |
| 3158 | break;\r |
| 3159 | }\r |
| 3160 | }\r |
| 3161 | break;\r |
| 3162 | \r |
| 3163 | default:\r |
| 3164 | bail("bad cs in x_dmes, can't happen");\r |
| 3165 | break;\r |
| 3166 | }\r |
| 3167 | }\r |
| 3168 | \r |
| 3169 | while (--rpt >= 0) { // pack them into words, output when we have two\r |
| 3170 | if (dmes_nc == 0) {\r |
| 3171 | dmes_wd = (nch & 0xFF) << 8;\r |
| 3172 | dmes_nc = 1;\r |
| 3173 | }\r |
| 3174 | else {\r |
| 3175 | dmes_wd |= (nch & 0xFF);\r |
| 3176 | writew(dmes_wd, FALSE);\r |
| 3177 | dmes_nc = 0;\r |
| 3178 | }\r |
| 3179 | }\r |
| 3180 | }\r |
| 3181 | \r |
| 3182 | // ---------------------------------------------------------------------------------\r |
| 3183 | // x_ebc - handle EBCDIC string definition (delimited with periods)\r |
| 3184 | // ---------------------------------------------------------------------------------\r |
| 3185 | \r |
| 3186 | void x_ebc (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3187 | {\r |
| 3188 | char *p;\r |
| 3189 | \r |
| 3190 | // setw(0, org, FALSE);\r |
| 3191 | if (*label)\r |
| 3192 | set_symbol(label, org, TRUE, relocate);\r |
| 3193 | \r |
| 3194 | p = trim(opfield); // remove trailing blanks from rest of input line (use whole thing)\r |
| 3195 | \r |
| 3196 | if (*p != '.') {\r |
| 3197 | asm_error("EBC data must start with .");\r |
| 3198 | return;\r |
| 3199 | }\r |
| 3200 | p++; // skip leading period\r |
| 3201 | \r |
| 3202 | dmes_nc = dmes_wd = 0; // clear output buffer (we're borrowing the DMES packer)\r |
| 3203 | dmes_cs = CODESET_EBCDIC;\r |
| 3204 | \r |
| 3205 | while (*p && *p != '.') // store packed ebcdic\r |
| 3206 | stuff_dmes(*p++, 1);\r |
| 3207 | \r |
| 3208 | if (dmes_nc) // odd number of characters\r |
| 3209 | stuff_dmes(' ', 1); // pad with a space to force out even # of characters\r |
| 3210 | \r |
| 3211 | if (*p != '.')\r |
| 3212 | asm_error("EBC missing closing .");\r |
| 3213 | }\r |
| 3214 | \r |
| 3215 | // ---------------------------------------------------------------------------------\r |
| 3216 | // x_dn - define name DN directive. Pack 5 characters into two words. This by the\r |
| 3217 | // way is the reason the language Forth is not Fourth.\r |
| 3218 | // ---------------------------------------------------------------------------------\r |
| 3219 | \r |
| 3220 | void x_dn (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3221 | {\r |
| 3222 | unsigned short words[2];\r |
| 3223 | \r |
| 3224 | setw(0, org, FALSE); // display origin\r |
| 3225 | \r |
| 3226 | if (*label) // define label\r |
| 3227 | set_symbol(label, org, TRUE, relocate);\r |
| 3228 | \r |
| 3229 | namecode(words, arg); \r |
| 3230 | \r |
| 3231 | writew(words[0], ABSOLUTE);\r |
| 3232 | writew(words[1], ABSOLUTE);\r |
| 3233 | }\r |
| 3234 | \r |
| 3235 | // ---------------------------------------------------------------------------------\r |
| 3236 | // x_dump - DUMP directive - pretend we saw "call $dump, call $exit"\r |
| 3237 | // ---------------------------------------------------------------------------------\r |
| 3238 | \r |
| 3239 | void x_dump (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3240 | {\r |
| 3241 | x_pdmp(op, label, mods, arg);\r |
| 3242 | x_exit(NULL, "", "", ""); // compile "call $exit"\r |
| 3243 | }\r |
| 3244 | \r |
| 3245 | // ---------------------------------------------------------------------------------\r |
| 3246 | // x_pdmp - PDMP directive - like DUMP but without the call $exit\r |
| 3247 | // ---------------------------------------------------------------------------------\r |
| 3248 | \r |
| 3249 | void x_pdmp (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3250 | {\r |
| 3251 | char nline[200], *tok;\r |
| 3252 | EXPR addr[3];\r |
| 3253 | int i;\r |
| 3254 | \r |
| 3255 | for (i = 0, tok = strtok(arg, ","); i < 3 && tok != NULL; i++, tok = strtok(NULL, ",")) {\r |
| 3256 | if (getexpr(tok, FALSE, addr+i) != S_DEFINED) {\r |
| 3257 | addr[i].value = (i == 1) ? 0x3FFF : 0;\r |
| 3258 | addr[i].relative = ABSOLUTE;\r |
| 3259 | }\r |
| 3260 | }\r |
| 3261 | \r |
| 3262 | org_advanced = FALSE; // * means this address+1\r |
| 3263 | \r |
| 3264 | format_line(nline, label, "BSI", "L", DOLLARDUMP, "");\r |
| 3265 | parse_line(nline); // compile "call $dump"\r |
| 3266 | \r |
| 3267 | writew(addr[2].value, ABSOLUTE); // append arguments (0, start, end address)\r |
| 3268 | writew(addr[0].value, addr[0].relative);\r |
| 3269 | writew(addr[1].value, addr[1].relative);\r |
| 3270 | }\r |
| 3271 | \r |
| 3272 | // ---------------------------------------------------------------------------------\r |
| 3273 | // x_hdng - HDNG directive\r |
| 3274 | // ---------------------------------------------------------------------------------\r |
| 3275 | \r |
| 3276 | void x_hdng (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3277 | {\r |
| 3278 | char *c;\r |
| 3279 | \r |
| 3280 | // label is not entered into the symbol table\r |
| 3281 | \r |
| 3282 | if (flist == NULL || ! list_on) {\r |
| 3283 | line_error = TRUE; // inhibit listing: don't print the HDNG statement\r |
| 3284 | return;\r |
| 3285 | }\r |
| 3286 | \r |
| 3287 | line_error = TRUE; // don't print the statement\r |
| 3288 | \r |
| 3289 | c = skipbl(opfield);\r |
| 3290 | trim(c);\r |
| 3291 | fprintf(flist, "\f%s\n\n", c); // print page header\r |
| 3292 | }\r |
| 3293 | \r |
| 3294 | // ---------------------------------------------------------------------------------\r |
| 3295 | // x_list - LIST directive. enable or disable listing\r |
| 3296 | // ---------------------------------------------------------------------------------\r |
| 3297 | \r |
| 3298 | void x_list (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3299 | {\r |
| 3300 | BOOL on;\r |
| 3301 | \r |
| 3302 | // label is not entered into the symbol table\r |
| 3303 | \r |
| 3304 | line_error = TRUE; // don't print the LIST statement\r |
| 3305 | \r |
| 3306 | if (flist == NULL || ! list_on) {\r |
| 3307 | return;\r |
| 3308 | }\r |
| 3309 | \r |
| 3310 | if (strcmpi(arg, "ON") == 0)\r |
| 3311 | on = TRUE;\r |
| 3312 | else if (strcmpi(arg, "OFF") == 0)\r |
| 3313 | on = FALSE;\r |
| 3314 | else\r |
| 3315 | on = do_list;\r |
| 3316 | \r |
| 3317 | list_on = on;\r |
| 3318 | }\r |
| 3319 | \r |
| 3320 | // ---------------------------------------------------------------------------------\r |
| 3321 | // x_spac - SPAC directive. Put blank lines in listing\r |
| 3322 | // ---------------------------------------------------------------------------------\r |
| 3323 | \r |
| 3324 | void x_spac (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3325 | {\r |
| 3326 | EXPR expr;\r |
| 3327 | \r |
| 3328 | // label is not entered into the symbol table\r |
| 3329 | \r |
| 3330 | if (flist == NULL || ! list_on) {\r |
| 3331 | line_error = TRUE; // don't print the SPAC statement\r |
| 3332 | return;\r |
| 3333 | }\r |
| 3334 | \r |
| 3335 | if (getexpr(arg, FALSE, &expr) != S_DEFINED)\r |
| 3336 | return;\r |
| 3337 | \r |
| 3338 | line_error = TRUE; // don't print the statement\r |
| 3339 | \r |
| 3340 | while (--expr.value >= 0) \r |
| 3341 | putc('\n', flist);\r |
| 3342 | }\r |
| 3343 | \r |
| 3344 | // ---------------------------------------------------------------------------------\r |
| 3345 | // x_ejct - EJCT directive - put formfeed in listing\r |
| 3346 | // ---------------------------------------------------------------------------------\r |
| 3347 | \r |
| 3348 | void x_ejct (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3349 | {\r |
| 3350 | // label is not entered into the symbol table\r |
| 3351 | \r |
| 3352 | if (flist == NULL || ! list_on) {\r |
| 3353 | line_error = TRUE; // don't print the EJCT statement\r |
| 3354 | return;\r |
| 3355 | }\r |
| 3356 | \r |
| 3357 | line_error = TRUE; // don't print the statement\r |
| 3358 | \r |
| 3359 | putc('\f', flist);\r |
| 3360 | }\r |
| 3361 | \r |
| 3362 | // ---------------------------------------------------------------------------------\r |
| 3363 | // basic_opcode - construct a standard opcode value from op table entry and modifier chars\r |
| 3364 | // ---------------------------------------------------------------------------------\r |
| 3365 | \r |
| 3366 | int basic_opcode (struct tag_op *op, char *mods)\r |
| 3367 | {\r |
| 3368 | int opcode = op->opcode; // basic code value\r |
| 3369 | \r |
| 3370 | if (strchr(mods, '1') != 0) // indexing\r |
| 3371 | opcode |= 0x0100;\r |
| 3372 | else if (strchr(mods, '2') != 0)\r |
| 3373 | opcode |= 0x0200;\r |
| 3374 | else if (strchr(mods, '3') != 0)\r |
| 3375 | opcode |= 0x0300;\r |
| 3376 | \r |
| 3377 | if (strchr(mods, 'L')) { // two-word format\r |
| 3378 | opcode |= OP_LONG;\r |
| 3379 | if (strchr(mods, 'I') != 0) // and indirect to boot\r |
| 3380 | opcode |= OP_INDIRECT;\r |
| 3381 | }\r |
| 3382 | \r |
| 3383 | return opcode;\r |
| 3384 | }\r |
| 3385 | \r |
| 3386 | // ---------------------------------------------------------------------------------\r |
| 3387 | // std_op - assemble a vanilla opcode\r |
| 3388 | // ---------------------------------------------------------------------------------\r |
| 3389 | \r |
| 3390 | void std_op (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3391 | {\r |
| 3392 | EXPR expr;\r |
| 3393 | int opcode = basic_opcode(op, mods);\r |
| 3394 | BOOL val_ok = FALSE;\r |
| 3395 | \r |
| 3396 | if (*label) // define label\r |
| 3397 | set_symbol(label, org, TRUE, relocate);\r |
| 3398 | \r |
| 3399 | if (*arg && ! (op->flags & NO_ARGS)) { // get value argument\r |
| 3400 | if (getexpr(arg, FALSE, &expr) == S_DEFINED) \r |
| 3401 | val_ok = TRUE;\r |
| 3402 | }\r |
| 3403 | else {\r |
| 3404 | expr.value = 0;\r |
| 3405 | expr.relative = FALSE;\r |
| 3406 | }\r |
| 3407 | \r |
| 3408 | if (opcode & OP_LONG) { // two-word format, just write code and value\r |
| 3409 | writew(opcode, FALSE);\r |
| 3410 | writew(expr.value, expr.relative);\r |
| 3411 | }\r |
| 3412 | else { // one-word format\r |
| 3413 | if (strchr(mods, 'I') != 0)\r |
| 3414 | asm_error("Indirect mode not permitted on one-word instructions");\r |
| 3415 | \r |
| 3416 | if (val_ok && ! (strchr(mods, 'X') || (op->flags & IS_ABS) || ((opcode & OP_INDEXED) && ! (op->flags & NO_IDX))))\r |
| 3417 | expr.value -= (org+1); // compute displacement\r |
| 3418 | \r |
| 3419 | if (expr.value < -128 || expr.value > 127) {// check range\r |
| 3420 | asm_error("Offset of %d is too large", expr.value);\r |
| 3421 | expr.value = 0;\r |
| 3422 | }\r |
| 3423 | \r |
| 3424 | writew(opcode | (expr.value & 0x00FF), FALSE);// that's the code\r |
| 3425 | }\r |
| 3426 | }\r |
| 3427 | \r |
| 3428 | // ---------------------------------------------------------------------------------\r |
| 3429 | // mdx_op - assemble a MDX family instruction\r |
| 3430 | // ---------------------------------------------------------------------------------\r |
| 3431 | \r |
| 3432 | void mdx_op (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3433 | {\r |
| 3434 | EXPR dest, incr = {0, FALSE};\r |
| 3435 | int opcode = basic_opcode(op, mods);\r |
| 3436 | char *tok;\r |
| 3437 | \r |
| 3438 | if (*label) // define label\r |
| 3439 | set_symbol(label, org, TRUE, relocate);\r |
| 3440 | \r |
| 3441 | if ((tok = strtok(arg, ",")) == NULL) { // argument format is dest[,increment]\r |
| 3442 | // asm_error("Destination not specified"); // seems not to be an error, IBM omits it sometimes\r |
| 3443 | dest.value = 0;\r |
| 3444 | dest.relative = ABSOLUTE;\r |
| 3445 | }\r |
| 3446 | else\r |
| 3447 | getexpr(tok, FALSE, &dest); // parse the address\r |
| 3448 | \r |
| 3449 | tok = strtok(NULL, ","); // look for second argument\r |
| 3450 | \r |
| 3451 | if (opcode & OP_LONG) { // two word format\r |
| 3452 | if (opcode & OP_INDEXED) { // format: MDX 2 dest\r |
| 3453 | if (tok != NULL)\r |
| 3454 | asm_error("This format takes only one argument");\r |
| 3455 | }\r |
| 3456 | else { // format: MDX dest,increment\r |
| 3457 | if (opcode & OP_INDIRECT)\r |
| 3458 | asm_error("Indirect can't be used without indexing");\r |
| 3459 | \r |
| 3460 | if (tok == NULL) {\r |
| 3461 | // asm_error("This format takes two arguments");\r |
| 3462 | incr.value = 0;\r |
| 3463 | incr.relative = ABSOLUTE;\r |
| 3464 | }\r |
| 3465 | else \r |
| 3466 | getexpr(tok, FALSE, &incr);\r |
| 3467 | \r |
| 3468 | if (incr.value < -128 || incr.value > 127) // displacement style (fixed in ver 1.08)\r |
| 3469 | asm_error("Invalid increment value (8 bits signed)");\r |
| 3470 | \r |
| 3471 | opcode |= (incr.value & 0xFF);\r |
| 3472 | }\r |
| 3473 | \r |
| 3474 | writew(opcode, ABSOLUTE);\r |
| 3475 | writew(dest.value, dest.relative);\r |
| 3476 | }\r |
| 3477 | else { // one word format MDX val\r |
| 3478 | if (tok != NULL)\r |
| 3479 | asm_error("This format takes only one argument");\r |
| 3480 | \r |
| 3481 | if (! (strchr(mods, 'X') || (opcode & OP_INDEXED)))\r |
| 3482 | dest.value -= (org+1); // compute displacement\r |
| 3483 | \r |
| 3484 | if (dest.value < -128 || dest.value > 127)\r |
| 3485 | asm_error("Offset/Increment of %d is too large", dest.value);\r |
| 3486 | \r |
| 3487 | writew(opcode | (dest.value & 0xFF), FALSE);\r |
| 3488 | }\r |
| 3489 | }\r |
| 3490 | \r |
| 3491 | // ---------------------------------------------------------------------------------\r |
| 3492 | // bsi_op - BSI long instruction is like a BSC L, short is standard\r |
| 3493 | // ---------------------------------------------------------------------------------\r |
| 3494 | \r |
| 3495 | void bsi_op (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3496 | {\r |
| 3497 | if (strchr(mods, 'L') || strchr(mods, 'I'))\r |
| 3498 | bsc_op(op, label, mods, arg);\r |
| 3499 | else\r |
| 3500 | std_op(op, label, mods, arg);\r |
| 3501 | }\r |
| 3502 | \r |
| 3503 | // ---------------------------------------------------------------------------------\r |
| 3504 | // b_op - branch; use short or long version\r |
| 3505 | // --------------------------------------------------------------------------------\r |
| 3506 | \r |
| 3507 | void b_op (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3508 | {\r |
| 3509 | static struct tag_op *mdx = NULL;\r |
| 3510 | \r |
| 3511 | if (strchr(mods, 'L') || strchr(mods, 'I')) {\r |
| 3512 | bsi_op(op, label, mods, arg); \r |
| 3513 | return;\r |
| 3514 | }\r |
| 3515 | \r |
| 3516 | if (mdx == NULL)\r |
| 3517 | if ((mdx = lookup_op("MDX")) == NULL)\r |
| 3518 | bail("Can't find MDX op");\r |
| 3519 | \r |
| 3520 | (mdx->handler)(mdx, label, mods, arg);\r |
| 3521 | }\r |
| 3522 | \r |
| 3523 | // ---------------------------------------------------------------------------------\r |
| 3524 | // bsc_op - compute a BSC family instruction\r |
| 3525 | // ---------------------------------------------------------------------------------\r |
| 3526 | \r |
| 3527 | void bsc_op (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3528 | {\r |
| 3529 | EXPR dest;\r |
| 3530 | int opcode = basic_opcode(op, mods);\r |
| 3531 | char *tok, *tests;\r |
| 3532 | \r |
| 3533 | if (*label) // define label\r |
| 3534 | set_symbol(label, org, TRUE, relocate);\r |
| 3535 | \r |
| 3536 | if (opcode & OP_LONG) { // two word format\r |
| 3537 | if ((tok = strtok(arg, ",")) == NULL) { // format is BSC dest[,tests]\r |
| 3538 | asm_error("Destination not specified");\r |
| 3539 | dest.value = 0;\r |
| 3540 | dest.relative = ABSOLUTE;\r |
| 3541 | }\r |
| 3542 | else\r |
| 3543 | getexpr(tok, FALSE, &dest);\r |
| 3544 | \r |
| 3545 | tests = strtok(NULL, ","); // get test characters\r |
| 3546 | }\r |
| 3547 | else\r |
| 3548 | tests = arg; // short format is BSC tests\r |
| 3549 | \r |
| 3550 | if (tests != NULL) { // stick in the testing bits\r |
| 3551 | for (; *tests; tests++) {\r |
| 3552 | switch (*tests) {\r |
| 3553 | // bit 0x40 is the BOSC bit\r |
| 3554 | case 'Z': opcode |= 0x20; break;\r |
| 3555 | case '-': opcode |= 0x10; break;\r |
| 3556 | case '+':\r |
| 3557 | case '&': opcode |= 0x08; break;\r |
| 3558 | case 'E': opcode |= 0x04; break;\r |
| 3559 | case 'C': opcode |= 0x02; break;\r |
| 3560 | case 'O': opcode |= 0x01; break;\r |
| 3561 | default:\r |
| 3562 | asm_error("Invalid test flag: '%c'", *tests);\r |
| 3563 | }\r |
| 3564 | }\r |
| 3565 | }\r |
| 3566 | \r |
| 3567 | writew(opcode, ABSOLUTE); // emit code\r |
| 3568 | if (opcode & OP_LONG)\r |
| 3569 | writew(dest.value, dest.relative);\r |
| 3570 | }\r |
| 3571 | \r |
| 3572 | // ---------------------------------------------------------------------------------\r |
| 3573 | // shf_op - assemble a shift instruction\r |
| 3574 | // ---------------------------------------------------------------------------------\r |
| 3575 | \r |
| 3576 | void shf_op (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3577 | {\r |
| 3578 | EXPR expr;\r |
| 3579 | int opcode = basic_opcode(op, mods);\r |
| 3580 | \r |
| 3581 | if (*label) // define label\r |
| 3582 | set_symbol(label, org, TRUE, relocate);\r |
| 3583 | \r |
| 3584 | if (opcode & OP_INDEXED) { // shift value comes from index register\r |
| 3585 | expr.value = 0;\r |
| 3586 | expr.relative = ABSOLUTE;\r |
| 3587 | }\r |
| 3588 | else\r |
| 3589 | getexpr(arg, FALSE, &expr);\r |
| 3590 | \r |
| 3591 | if (expr.relative) {\r |
| 3592 | asm_error("Shift value is a relative address");\r |
| 3593 | expr.relative = ABSOLUTE;\r |
| 3594 | }\r |
| 3595 | \r |
| 3596 | if (expr.value < 0 || expr.value > 32) { // check range\r |
| 3597 | asm_error("Shift count of %d is invalid", expr.value);\r |
| 3598 | expr.value = 0;\r |
| 3599 | }\r |
| 3600 | \r |
| 3601 | writew(opcode | (expr.value & 0x3F), FALSE); // put shift count into displacement field\r |
| 3602 | }\r |
| 3603 | \r |
| 3604 | // ---------------------------------------------------------------------------------\r |
| 3605 | // x_mdm - MDM instruction\r |
| 3606 | // ---------------------------------------------------------------------------------\r |
| 3607 | \r |
| 3608 | void x_mdm (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3609 | {\r |
| 3610 | int opcode = basic_opcode(op, mods);\r |
| 3611 | \r |
| 3612 | if (*label) // define label\r |
| 3613 | set_symbol(label, org, TRUE, relocate);\r |
| 3614 | // oh dear: bug here\r |
| 3615 | asm_error("'%s' is not yet supported", op->mnem);\r |
| 3616 | }\r |
| 3617 | \r |
| 3618 | // ---------------------------------------------------------------------------------\r |
| 3619 | // x_exit - EXIT directive. Assembler manual says it treats like CALL $EXIT, but\r |
| 3620 | // object code reveals the truth: jump to $EXIT, which is a small value, so we can use LDX.\r |
| 3621 | // ---------------------------------------------------------------------------------\r |
| 3622 | \r |
| 3623 | void x_exit (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3624 | {\r |
| 3625 | char nline[120];\r |
| 3626 | \r |
| 3627 | format_line(nline, label, "LDX", "X", DOLLAREXIT, "");\r |
| 3628 | parse_line(nline);\r |
| 3629 | }\r |
| 3630 | \r |
| 3631 | // ---------------------------------------------------------------------------------\r |
| 3632 | // x_opt - .OPT directive. Nonstandard. Possible values:\r |
| 3633 | //\r |
| 3634 | // .OPT CEXPR - use C precedence in evaluating expressions rather than strict left-right\r |
| 3635 | // ---------------------------------------------------------------------------------\r |
| 3636 | \r |
| 3637 | void x_opt (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3638 | {\r |
| 3639 | char *tok;\r |
| 3640 | \r |
| 3641 | org_advanced = FALSE; // * means this address\r |
| 3642 | \r |
| 3643 | if (*label) {\r |
| 3644 | asm_error("Label not permitted on .OPT statement");\r |
| 3645 | return;\r |
| 3646 | }\r |
| 3647 | // look for OPT arguments\r |
| 3648 | for (tok = strtok(arg, ","); tok != NULL; tok = strtok(NULL, ",")) {\r |
| 3649 | if (strcmp(tok, "CEXPR") == 0) {\r |
| 3650 | cexpr = TRUE; // use C expression precedence (untested)\r |
| 3651 | }\r |
| 3652 | else\r |
| 3653 | asm_error("Unknown .OPT: '%s'", tok);\r |
| 3654 | }\r |
| 3655 | }\r |
| 3656 | \r |
| 3657 | // ---------------------------------------------------------------------------------\r |
| 3658 | // askip - skip input lines until a line with the target label appears\r |
| 3659 | // ---------------------------------------------------------------------------------\r |
| 3660 | \r |
| 3661 | void askip (char *target)\r |
| 3662 | {\r |
| 3663 | char nline[200], cur_label[20], *c;\r |
| 3664 | \r |
| 3665 | while (get_line(nline, sizeof(nline), TRUE)) { // read next line (but don't exit a macro)\r |
| 3666 | listout(FALSE); // end listing of previous input line\r |
| 3667 | \r |
| 3668 | prep_line(nline); // preform standard line prep\r |
| 3669 | \r |
| 3670 | strncpy(cur_label, nline, 6); // get first 5 characters\r |
| 3671 | cur_label[5] = '\0';\r |
| 3672 | \r |
| 3673 | for (c = cur_label; *c > ' '; c++) // truncate at first whitespace\r |
| 3674 | ;\r |
| 3675 | *c = '\0';\r |
| 3676 | // stop if there's a match\r |
| 3677 | if ((target == NULL) ? (cur_label[0] == '\0') : strcmp(target, cur_label) == 0) {\r |
| 3678 | parse_line(nline); // process this line\r |
| 3679 | return;\r |
| 3680 | }\r |
| 3681 | }\r |
| 3682 | \r |
| 3683 | if (target != NULL)\r |
| 3684 | asm_error("Label %s not found", target);\r |
| 3685 | }\r |
| 3686 | \r |
| 3687 | // ---------------------------------------------------------------------------------\r |
| 3688 | // x_aif - process conditional assembly jump\r |
| 3689 | // ---------------------------------------------------------------------------------\r |
| 3690 | \r |
| 3691 | void x_aif (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3692 | {\r |
| 3693 | char *target, *tok;\r |
| 3694 | EXPR expr1, expr2;\r |
| 3695 | BOOL istrue;\r |
| 3696 | enum {OP_EQ, OP_LT, OP_GT, OP_NE, OP_LE, OP_GE} cmp_op;\r |
| 3697 | \r |
| 3698 | // label is not entered into the symbol table\r |
| 3699 | \r |
| 3700 | arg = skipbl(arg);\r |
| 3701 | if (*arg != '(') {\r |
| 3702 | asm_error("AIF operand must start with (");\r |
| 3703 | return;\r |
| 3704 | }\r |
| 3705 | \r |
| 3706 | arg++; // skip the paren\r |
| 3707 | \r |
| 3708 | // normally whitespace is never found in the arg string (see tabtok and coltok).\r |
| 3709 | // However, spaces inside parens are permitted. \r |
| 3710 | \r |
| 3711 | if ((tok = strtok(arg, whitespace)) == NULL) {\r |
| 3712 | asm_error("AIF missing first expression");\r |
| 3713 | return;\r |
| 3714 | }\r |
| 3715 | \r |
| 3716 | getexpr(tok, FALSE, &expr1);\r |
| 3717 | \r |
| 3718 | if ((tok = strtok(NULL, whitespace)) == NULL) {\r |
| 3719 | asm_error("AIF missing conditional operator");\r |
| 3720 | return;\r |
| 3721 | }\r |
| 3722 | \r |
| 3723 | if (strcmp(tok, "EQ") == 0)\r |
| 3724 | cmp_op = OP_EQ;\r |
| 3725 | else if (strcmp(tok, "LT") == 0)\r |
| 3726 | cmp_op = OP_LT;\r |
| 3727 | else if (strcmp(tok, "GT") == 0)\r |
| 3728 | cmp_op = OP_GT;\r |
| 3729 | else if (strcmp(tok, "NE") == 0)\r |
| 3730 | cmp_op = OP_NE;\r |
| 3731 | else if (strcmp(tok, "LE") == 0)\r |
| 3732 | cmp_op = OP_LE;\r |
| 3733 | else if (strcmp(tok, "GE") == 0)\r |
| 3734 | cmp_op = OP_GE;\r |
| 3735 | else {\r |
| 3736 | asm_error("AIF: %s is not a valid conditional operator", tok);\r |
| 3737 | return;\r |
| 3738 | }\r |
| 3739 | \r |
| 3740 | if ((tok = strtok(NULL, ")")) == NULL) {\r |
| 3741 | asm_error("AIF missing second expression");\r |
| 3742 | return;\r |
| 3743 | }\r |
| 3744 | \r |
| 3745 | getexpr(tok, FALSE, &expr2);\r |
| 3746 | \r |
| 3747 | switch (cmp_op) { // test the condition\r |
| 3748 | case OP_EQ: istrue = expr1.value == expr2.value; break;\r |
| 3749 | case OP_LT: istrue = expr1.value < expr2.value; break;\r |
| 3750 | case OP_GT: istrue = expr1.value > expr2.value; break;\r |
| 3751 | case OP_NE: istrue = expr1.value != expr2.value; break;\r |
| 3752 | case OP_LE: istrue = expr1.value <= expr2.value; break;\r |
| 3753 | case OP_GE: istrue = expr1.value >= expr2.value; break;\r |
| 3754 | default: bail("in aif, can't happen");\r |
| 3755 | }\r |
| 3756 | \r |
| 3757 | // After the closing paren coltok and tabtok guarantee we will have no whitespace\r |
| 3758 | \r |
| 3759 | if ((target = strtok(arg, ",")) == NULL) // get target label\r |
| 3760 | asm_warning("Missing target label");\r |
| 3761 | \r |
| 3762 | if (istrue)\r |
| 3763 | askip(target); // skip to the target\r |
| 3764 | }\r |
| 3765 | \r |
| 3766 | // ---------------------------------------------------------------------------------\r |
| 3767 | // x_aifb - conditional assembly jump back (macro only)\r |
| 3768 | // ---------------------------------------------------------------------------------\r |
| 3769 | \r |
| 3770 | void x_aifb (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3771 | {\r |
| 3772 | asm_error("aifb valid in macros only and not implemented in any case");\r |
| 3773 | }\r |
| 3774 | \r |
| 3775 | // ---------------------------------------------------------------------------------\r |
| 3776 | // x_ago \r |
| 3777 | // ---------------------------------------------------------------------------------\r |
| 3778 | \r |
| 3779 | void x_ago (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3780 | {\r |
| 3781 | char *target;\r |
| 3782 | \r |
| 3783 | // label is not entered into the symbol table\r |
| 3784 | \r |
| 3785 | // handle differently in a macro\r |
| 3786 | \r |
| 3787 | if ((target = strtok(arg, ",")) == NULL) // get target label\r |
| 3788 | asm_warning("Missing target label");\r |
| 3789 | \r |
| 3790 | askip(target); // skip to the target\r |
| 3791 | }\r |
| 3792 | \r |
| 3793 | // ---------------------------------------------------------------------------------\r |
| 3794 | // ---------------------------------------------------------------------------------\r |
| 3795 | \r |
| 3796 | void x_agob (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3797 | {\r |
| 3798 | asm_error("agob valid in macros only and not implemented in any case");\r |
| 3799 | }\r |
| 3800 | \r |
| 3801 | // ---------------------------------------------------------------------------------\r |
| 3802 | // ---------------------------------------------------------------------------------\r |
| 3803 | \r |
| 3804 | void x_anop (struct tag_op *op, char *label, char *mods, char *arg)\r |
| 3805 | {\r |
| 3806 | // label is not entered into the symbol table\r |
| 3807 | // do nothing else\r |
| 3808 | }\r |
| 3809 | \r |
| 3810 | // ---------------------------------------------------------------------------------\r |
| 3811 | // expression parser, borrowed from older code, no comments, sorry\r |
| 3812 | // ---------------------------------------------------------------------------------\r |
| 3813 | \r |
| 3814 | char *exprptr, *oexprptr;\r |
| 3815 | \r |
| 3816 | #define GETNEXT (*exprptr++)\r |
| 3817 | #define UNGET --exprptr\r |
| 3818 | \r |
| 3819 | #define LETTER 0 /* character types */\r |
| 3820 | #define DIGIT 1\r |
| 3821 | #define ETC 2\r |
| 3822 | #define ILL 3\r |
| 3823 | #define SPACE 4\r |
| 3824 | #define MULOP 5\r |
| 3825 | #define ADDOP 6\r |
| 3826 | #define EXPOP 7\r |
| 3827 | \r |
| 3828 | int getnb (void);\r |
| 3829 | void c_expr (EXPR *ap);\r |
| 3830 | void c_expr_m (EXPR *ap);\r |
| 3831 | void c_expr_e (EXPR *ap);\r |
| 3832 | void c_expr_u (EXPR *ap);\r |
| 3833 | void c_term (EXPR *ap);\r |
| 3834 | int c_number (int c, int r, int nchar);\r |
| 3835 | int digit (int c, int r);\r |
| 3836 | int c_esc (int c);\r |
| 3837 | void exprerr (int n);\r |
| 3838 | void a1130_expr (EXPR *ap);\r |
| 3839 | void a1130_term (EXPR *ap);\r |
| 3840 | \r |
| 3841 | char ctype[128] = { // character types\r |
| 3842 | /*^0ABCDEFG */ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,\r |
| 3843 | /*^HIJKLMNO */ ILL, SPACE, SPACE, ILL, SPACE, SPACE, ILL, ILL,\r |
| 3844 | /*^PQRSTUVW */ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,\r |
| 3845 | /*^XYZ */ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL,\r |
| 3846 | /* !"#$%&' */ SPACE, ETC, ETC, LETTER, LETTER, MULOP, MULOP, LETTER, /* $ # @ and ' are letters here */\r |
| 3847 | /* ()*+,-./ */ ETC, ETC, MULOP, ADDOP, ETC, ADDOP, ETC, MULOP,\r |
| 3848 | /* 01234567 */ DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT,\r |
| 3849 | /* 89:;<=>? */ DIGIT, DIGIT, ETC, ETC, MULOP, ETC, MULOP, ETC,\r |
| 3850 | /* @ABCDEFG */ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,\r |
| 3851 | /* HIJKLMNO */ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,\r |
| 3852 | /* PQRSTUVW */ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,\r |
| 3853 | /* XYZ[\]^_ */ LETTER, LETTER, LETTER, ETC, ETC, ETC, EXPOP, LETTER,\r |
| 3854 | /* `abcdefg */ ETC, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,\r |
| 3855 | /* hijklmno */ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,\r |
| 3856 | /* pqrstuvw */ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER,\r |
| 3857 | /* xyz{|}~ */ LETTER, LETTER, LETTER, ETC, ADDOP, ETC, ETC, ETC\r |
| 3858 | };\r |
| 3859 | \r |
| 3860 | char *errstr[] = {\r |
| 3861 | "Missing exponent", // 0\r |
| 3862 | "Undefined symbol", // 1\r |
| 3863 | "Division by zero", // 2\r |
| 3864 | "Illegal operator", // 3\r |
| 3865 | ") expected", // 4\r |
| 3866 | "Char expected after '", // 5\r |
| 3867 | "Char expected after .", // 6\r |
| 3868 | "Number expected after =", // 7\r |
| 3869 | "Syntax error", // 8\r |
| 3870 | "Number syntax", // 9\r |
| 3871 | "Char expected after \\", // 10\r |
| 3872 | "Relocation error" // 11\r |
| 3873 | };\r |
| 3874 | \r |
| 3875 | int getnb () {\r |
| 3876 | int c;\r |
| 3877 | \r |
| 3878 | if (cexpr) { // in C mode, handle normally\r |
| 3879 | while (ctype[(c = GETNEXT)] == SPACE)\r |
| 3880 | ;\r |
| 3881 | } // in 1130 mode, a space terminates the expression. Here, eat the rest\r |
| 3882 | else if ((c = GETNEXT) == ' ') {\r |
| 3883 | while ((c = GETNEXT) != '\0')\r |
| 3884 | ;\r |
| 3885 | }\r |
| 3886 | \r |
| 3887 | return c;\r |
| 3888 | }\r |
| 3889 | \r |
| 3890 | int symbest, exprerrno;\r |
| 3891 | jmp_buf exprjmp;\r |
| 3892 | \r |
| 3893 | // ---------------------------------------------------------------------------------\r |
| 3894 | // getexpr\r |
| 3895 | // ---------------------------------------------------------------------------------\r |
| 3896 | \r |
| 3897 | int getexpr (char *pc, BOOL undefined_ok, EXPR *pval)\r |
| 3898 | {\r |
| 3899 | symbest = S_DEFINED; // assume no questionable symbols\r |
| 3900 | \r |
| 3901 | pval->value = 0;\r |
| 3902 | pval->relative = ABSOLUTE;\r |
| 3903 | \r |
| 3904 | if (! *pc) // blank expression is same as zero, ok?\r |
| 3905 | return S_DEFINED;\r |
| 3906 | \r |
| 3907 | if (setjmp(exprjmp) != 0) { // encountered a syntax error & bailed\r |
| 3908 | pval->value = 0;\r |
| 3909 | pval->relative = ABSOLUTE;\r |
| 3910 | return S_UNDEFINED;\r |
| 3911 | }\r |
| 3912 | \r |
| 3913 | exprptr = oexprptr = pc; // make global the buffer pointer\r |
| 3914 | \r |
| 3915 | c_expr(pval);\r |
| 3916 | \r |
| 3917 | if (GETNEXT) // expression should have been entirely eaten\r |
| 3918 | exprerr(8); // if characters are left, it's an error\r |
| 3919 | \r |
| 3920 | if (pval->relative < 0 || pval->relative > 1)\r |
| 3921 | exprerr(11); // has to work out to an absolute or a single relative term\r |
| 3922 | \r |
| 3923 | if (symbest == S_DEFINED) // tell how it came out\r |
| 3924 | return S_DEFINED;\r |
| 3925 | \r |
| 3926 | pval->value = 0;\r |
| 3927 | pval->relative = ABSOLUTE;\r |
| 3928 | return (pass == 1 && undefined_ok) ? S_PROVISIONAL : S_UNDEFINED;\r |
| 3929 | }\r |
| 3930 | \r |
| 3931 | // ---------------------------------------------------------------------------------\r |
| 3932 | // output_literals - construct .DC assembler lines to assemble pending literal\r |
| 3933 | // constant values that have accumulated.\r |
| 3934 | // ---------------------------------------------------------------------------------\r |
| 3935 | \r |
| 3936 | void output_literals (BOOL eof)\r |
| 3937 | {\r |
| 3938 | char line[120], label[12], num[20];\r |
| 3939 | int i;\r |
| 3940 | \r |
| 3941 | for (i = 0; i < n_literals; i++) { // generate DC statements for any pending literal constants\r |
| 3942 | if (literal[i].even && literal[i].hex) // create the value string\r |
| 3943 | sprintf(num, "/%08lx", literal[i].value);\r |
| 3944 | else if (literal[i].even)\r |
| 3945 | sprintf(num, "%ld", literal[i].value);\r |
| 3946 | else if (literal[i].hex)\r |
| 3947 | sprintf(num, "/%04x", literal[i].value & 0xFFFF);\r |
| 3948 | else\r |
| 3949 | sprintf(num, "%d", literal[i].value);\r |
| 3950 | \r |
| 3951 | sprintf(label, "_L%03d", literal[i].tagno);\r |
| 3952 | format_line(line, label, literal[i].even ? "DEC" : "DC", "", num, "GENERATED LITERAL CONSTANT");\r |
| 3953 | \r |
| 3954 | if (eof) {\r |
| 3955 | eof = FALSE; // at end of file, for first literal, only prepare blank line\r |
| 3956 | sprintf(listline, LEFT_MARGIN, org);\r |
| 3957 | }\r |
| 3958 | else\r |
| 3959 | listout(TRUE); // push out any pending line(s)\r |
| 3960 | \r |
| 3961 | if (flist && list_on) // this makes stuff appear in the listing\r |
| 3962 | sprintf(listline, LEFT_MARGIN " %s", detab(line));\r |
| 3963 | \r |
| 3964 | nwout = 0;\r |
| 3965 | \r |
| 3966 | parse_line(line); // assemble the constant definition\r |
| 3967 | }\r |
| 3968 | \r |
| 3969 | n_literals = 0; // clear list\r |
| 3970 | }\r |
| 3971 | \r |
| 3972 | // ---------------------------------------------------------------------------------\r |
| 3973 | // a1130_term - extract one term of an expression\r |
| 3974 | // ---------------------------------------------------------------------------------\r |
| 3975 | \r |
| 3976 | void a1130_term (EXPR *ap)\r |
| 3977 | {\r |
| 3978 | PSYMBOL s;\r |
| 3979 | char token[80], *t;\r |
| 3980 | int c;\r |
| 3981 | \r |
| 3982 | if (cexpr) { // use C syntax\r |
| 3983 | c_term(ap);\r |
| 3984 | return;\r |
| 3985 | }\r |
| 3986 | \r |
| 3987 | c = GETNEXT;\r |
| 3988 | \r |
| 3989 | if (ctype[c] == DIGIT) { /* number */\r |
| 3990 | ap->value = signextend(c_number(c,10,-1));\r |
| 3991 | ap->relative = ABSOLUTE;\r |
| 3992 | }\r |
| 3993 | else if (c == '+') { /* unary + */\r |
| 3994 | a1130_term(ap);\r |
| 3995 | }\r |
| 3996 | else if (c == '-') { /* unary - */\r |
| 3997 | a1130_term(ap);\r |
| 3998 | ap->value = - ap->value;\r |
| 3999 | }\r |
| 4000 | else if (c == '/') { /* / starts a hex constant */\r |
| 4001 | ap->value = signextend(c_number(c,16,-1));\r |
| 4002 | ap->relative = ABSOLUTE;\r |
| 4003 | }\r |
| 4004 | else if (c == '*') { /* asterisk alone = org */\r |
| 4005 | ap->value = org + org_advanced; // here is where that offset matters!\r |
| 4006 | ap->relative = relocate;\r |
| 4007 | }\r |
| 4008 | else if (c == '.') { /* EBCDIC constant */\r |
| 4009 | c = GETNEXT;\r |
| 4010 | if (c == '\0') {\r |
| 4011 | UNGET;\r |
| 4012 | c = ' ';\r |
| 4013 | }\r |
| 4014 | c = ascii_to_ebcdic_table[c];\r |
| 4015 | ap->value = c; // VALUE IS IN LOW BYTE!!!\r |
| 4016 | ap->relative = ABSOLUTE;\r |
| 4017 | }\r |
| 4018 | else if (ctype[c] == LETTER) { /* symbol */\r |
| 4019 | t = token;\r |
| 4020 | do {\r |
| 4021 | *t++ = c;\r |
| 4022 | c = GETNEXT;\r |
| 4023 | } while (ctype[c] == LETTER || ctype[c] == DIGIT);\r |
| 4024 | UNGET;\r |
| 4025 | *t++ = '\0';\r |
| 4026 | \r |
| 4027 | s = lookup_symbol(token, TRUE);\r |
| 4028 | add_xref(s, FALSE);\r |
| 4029 | ap->value = s->value;\r |
| 4030 | ap->relative = s->relative;\r |
| 4031 | \r |
| 4032 | symbest = MIN(symbest, s->defined); // this goes to lowest value (undefined < provisional < defined)\r |
| 4033 | if (pass == 2 && s->defined != S_DEFINED)\r |
| 4034 | exprerr(1);\r |
| 4035 | }\r |
| 4036 | else\r |
| 4037 | exprerr(8);\r |
| 4038 | }\r |
| 4039 | \r |
| 4040 | // ---------------------------------------------------------------------------------\r |
| 4041 | // signextend - sign-extend a 16-bit constant value to whatever "int" is.\r |
| 4042 | // ---------------------------------------------------------------------------------\r |
| 4043 | \r |
| 4044 | int signextend (int v)\r |
| 4045 | {\r |
| 4046 | v &= 0xFFFF; // clip to 16 bits (this may not be necessary, but best to be safe?)\r |
| 4047 | \r |
| 4048 | if (v & 0x8000) // if sign bit is set\r |
| 4049 | v |= ~0xFFFF; // sign extend\r |
| 4050 | \r |
| 4051 | return v;\r |
| 4052 | }\r |
| 4053 | \r |
| 4054 | // ---------------------------------------------------------------------------------\r |
| 4055 | // c_expr - evalate an expression\r |
| 4056 | // ---------------------------------------------------------------------------------\r |
| 4057 | \r |
| 4058 | void c_expr (EXPR *ap)\r |
| 4059 | {\r |
| 4060 | int c;\r |
| 4061 | EXPR rop;\r |
| 4062 | \r |
| 4063 | c_expr_m(ap); // get combined multiplicative terms\r |
| 4064 | for (;;) { // handle +/- precedence operators\r |
| 4065 | if (ctype[c=getnb()] != ADDOP) {\r |
| 4066 | UNGET;\r |
| 4067 | break;\r |
| 4068 | }\r |
| 4069 | c_expr_m(&rop); // right hand operand\r |
| 4070 | switch (c) {\r |
| 4071 | case '+':\r |
| 4072 | ap->value += rop.value;\r |
| 4073 | ap->relative += rop.relative;\r |
| 4074 | break;\r |
| 4075 | \r |
| 4076 | case '-':\r |
| 4077 | ap->value -= rop.value;\r |
| 4078 | ap->relative -= rop.relative;\r |
| 4079 | break;\r |
| 4080 | \r |
| 4081 | case '|':\r |
| 4082 | if (ap->relative || rop.relative)\r |
| 4083 | exprerr(11);\r |
| 4084 | ap->value = ((long) (ap->value)) | ((long) rop.value);\r |
| 4085 | break;\r |
| 4086 | \r |
| 4087 | default:\r |
| 4088 | printf("In expr, can't happen\n");\r |
| 4089 | }\r |
| 4090 | }\r |
| 4091 | }\r |
| 4092 | \r |
| 4093 | // ---------------------------------------------------------------------------------\r |
| 4094 | // c_expr_m - get multiplicative precedence terms. Again, this is not usually used\r |
| 4095 | // ---------------------------------------------------------------------------------\r |
| 4096 | \r |
| 4097 | void c_expr_m (EXPR *ap)\r |
| 4098 | {\r |
| 4099 | int c;\r |
| 4100 | EXPR rop;\r |
| 4101 | \r |
| 4102 | c_expr_e(ap); // get exponential precedence term\r |
| 4103 | for (;;) { // get operator\r |
| 4104 | c = getnb();\r |
| 4105 | if ((c=='<') || (c=='>'))\r |
| 4106 | if (c != getnb()) // << or >>\r |
| 4107 | exprerr(3);\r |
| 4108 | if (ctype[c] != MULOP) {\r |
| 4109 | UNGET;\r |
| 4110 | break;\r |
| 4111 | }\r |
| 4112 | c_expr_e(&rop); // right hand operand\r |
| 4113 | \r |
| 4114 | switch(c) {\r |
| 4115 | case '*':\r |
| 4116 | if (ap->relative && rop.relative)\r |
| 4117 | exprerr(11);\r |
| 4118 | \r |
| 4119 | ap->value *= rop.value;\r |
| 4120 | ap->relative = (ap->relative || rop.relative) ? RELATIVE : ABSOLUTE;\r |
| 4121 | break;\r |
| 4122 | \r |
| 4123 | case '/':\r |
| 4124 | if (rop.value == 0)\r |
| 4125 | exprerr(2);\r |
| 4126 | if (ap->relative || rop.relative)\r |
| 4127 | exprerr(11);\r |
| 4128 | \r |
| 4129 | ap->value /= rop.value;\r |
| 4130 | break;\r |
| 4131 | \r |
| 4132 | case '%':\r |
| 4133 | if (rop.value == 0)\r |
| 4134 | exprerr(2);\r |
| 4135 | if (ap->relative || rop.relative)\r |
| 4136 | exprerr(11);\r |
| 4137 | \r |
| 4138 | ap->value = ((long) (ap->value)) % ((long) rop.value);\r |
| 4139 | break;\r |
| 4140 | \r |
| 4141 | case '&':\r |
| 4142 | if (ap->relative || rop.relative)\r |
| 4143 | exprerr(11);\r |
| 4144 | \r |
| 4145 | ap->value = ((long) (ap->value)) & ((long) rop.value);\r |
| 4146 | break;\r |
| 4147 | \r |
| 4148 | case '>':\r |
| 4149 | if (ap->relative || rop.relative)\r |
| 4150 | exprerr(11);\r |
| 4151 | \r |
| 4152 | ap->value = ((long) (ap->value)) >> ((long) rop.value);\r |
| 4153 | break;\r |
| 4154 | \r |
| 4155 | case '<':\r |
| 4156 | if (ap->relative || rop.relative)\r |
| 4157 | exprerr(11);\r |
| 4158 | \r |
| 4159 | ap->value = ((long) (ap->value)) << ((long) rop.value);\r |
| 4160 | break;\r |
| 4161 | \r |
| 4162 | default:\r |
| 4163 | printf("In expr_m, can't happen\n");\r |
| 4164 | }\r |
| 4165 | }\r |
| 4166 | }\r |
| 4167 | \r |
| 4168 | // ---------------------------------------------------------------------------------\r |
| 4169 | // c_expr_e - get exponential precedence terms. Again, this is not usually used\r |
| 4170 | // ---------------------------------------------------------------------------------\r |
| 4171 | \r |
| 4172 | void c_expr_e (EXPR *ap)\r |
| 4173 | {\r |
| 4174 | int c, i, v;\r |
| 4175 | EXPR rop;\r |
| 4176 | \r |
| 4177 | c_expr_u(ap);\r |
| 4178 | for (;;) {\r |
| 4179 | c = getnb();\r |
| 4180 | if (ctype[c] != EXPOP) {\r |
| 4181 | UNGET;\r |
| 4182 | break;\r |
| 4183 | }\r |
| 4184 | c_expr_u(&rop);\r |
| 4185 | \r |
| 4186 | switch(c) {\r |
| 4187 | case '^':\r |
| 4188 | if (ap->relative || rop.relative)\r |
| 4189 | exprerr(11);\r |
| 4190 | \r |
| 4191 | v = ap->value;\r |
| 4192 | ap->value = 1;\r |
| 4193 | for (i = 0; i < rop.value; i++)\r |
| 4194 | ap->value *= v;\r |
| 4195 | break;\r |
| 4196 | \r |
| 4197 | default:\r |
| 4198 | printf("In expr_e, can't happen\n");\r |
| 4199 | }\r |
| 4200 | }\r |
| 4201 | }\r |
| 4202 | \r |
| 4203 | // ---------------------------------------------------------------------------------\r |
| 4204 | // c_expr_u - get unary precedence terms. Again, this is not usually used\r |
| 4205 | // ---------------------------------------------------------------------------------\r |
| 4206 | \r |
| 4207 | void c_expr_u (EXPR *ap)\r |
| 4208 | {\r |
| 4209 | int c;\r |
| 4210 | \r |
| 4211 | if ((c = getnb()) == '!') {\r |
| 4212 | a1130_term(ap);\r |
| 4213 | ap->value = ~ ((long)(ap->value));\r |
| 4214 | if (ap->relative)\r |
| 4215 | exprerr(11);\r |
| 4216 | }\r |
| 4217 | else if (c == '-') {\r |
| 4218 | a1130_term(ap);\r |
| 4219 | ap->value = - ap->value;\r |
| 4220 | if (ap->relative)\r |
| 4221 | exprerr(11);\r |
| 4222 | }\r |
| 4223 | else {\r |
| 4224 | UNGET;\r |
| 4225 | a1130_term(ap);\r |
| 4226 | }\r |
| 4227 | }\r |
| 4228 | \r |
| 4229 | // ---------------------------------------------------------------------------------\r |
| 4230 | // c_term - get basic operand or parenthesized expression. Again, this is not usually used\r |
| 4231 | // ---------------------------------------------------------------------------------\r |
| 4232 | \r |
| 4233 | void c_term (EXPR *ap)\r |
| 4234 | {\r |
| 4235 | int c, cc;\r |
| 4236 | PSYMBOL s;\r |
| 4237 | char token[80], *t;\r |
| 4238 | \r |
| 4239 | ap->relative = ABSOLUTE; /* assume absolute */\r |
| 4240 | \r |
| 4241 | if ((c = getnb()) == '(') { /* parenthesized expr */\r |
| 4242 | c_expr(ap); /* start over at the top! */\r |
| 4243 | if ((cc = getnb()) != ')')\r |
| 4244 | exprerr(4);\r |
| 4245 | }\r |
| 4246 | else if (c == '\'') { /* single quote: char */\r |
| 4247 | if ((c = GETNEXT) == '\0')\r |
| 4248 | c = ' ';\r |
| 4249 | ap->value = c_esc(c);\r |
| 4250 | }\r |
| 4251 | else if (ctype[c] == DIGIT) { /* number */\r |
| 4252 | ap->value = signextend(c_number(c,10,-1));\r |
| 4253 | }\r |
| 4254 | else if (c == '0') { /* 0 starts a hex or octal constant */\r |
| 4255 | if ((c = GETNEXT) == 'x') {\r |
| 4256 | c = GETNEXT;\r |
| 4257 | ap->value = signextend(c_number(c,16,-1));\r |
| 4258 | }\r |
| 4259 | else {\r |
| 4260 | ap->value = signextend(c_number(c,8,-1));\r |
| 4261 | }\r |
| 4262 | }\r |
| 4263 | else if (c == '*') { /* asterisk alone = org */\r |
| 4264 | ap->value = org + org_advanced;\r |
| 4265 | ap->relative = relocate;\r |
| 4266 | }\r |
| 4267 | else if (ctype[c] == LETTER) { /* symbol */\r |
| 4268 | t = token;\r |
| 4269 | do {\r |
| 4270 | *t++ = c;\r |
| 4271 | c = GETNEXT;\r |
| 4272 | } while (ctype[c] == LETTER || ctype[c] == DIGIT);\r |
| 4273 | UNGET;\r |
| 4274 | *t++ = '\0';\r |
| 4275 | \r |
| 4276 | s = lookup_symbol(token, TRUE);\r |
| 4277 | ap->value = s->value;\r |
| 4278 | ap->relative = s->relative;\r |
| 4279 | add_xref(s, FALSE);\r |
| 4280 | symbest = MIN(symbest, s->defined); // this goes to lowest value (undefined < provisional < defined)\r |
| 4281 | \r |
| 4282 | if (pass == 2 && s->defined != S_DEFINED)\r |
| 4283 | exprerr(1);\r |
| 4284 | }\r |
| 4285 | else\r |
| 4286 | exprerr(8);\r |
| 4287 | }\r |
| 4288 | \r |
| 4289 | // ---------------------------------------------------------------------------------\r |
| 4290 | // c_number - get a C format constant value. Again, this is not usually used\r |
| 4291 | // ---------------------------------------------------------------------------------\r |
| 4292 | \r |
| 4293 | int c_number (int c, int r, int nchar)\r |
| 4294 | {\r |
| 4295 | int v, n;\r |
| 4296 | \r |
| 4297 | nchar--;\r |
| 4298 | \r |
| 4299 | if (c == '/' && ! cexpr) { /* special radix stuff */\r |
| 4300 | r = 16;\r |
| 4301 | c = GETNEXT;\r |
| 4302 | }\r |
| 4303 | else if (r == 10 && c == '0' && cexpr) { /* accept C style 0x## also */\r |
| 4304 | c = GETNEXT;\r |
| 4305 | if (c == 'x') {\r |
| 4306 | r = 16;\r |
| 4307 | c = GETNEXT;\r |
| 4308 | }\r |
| 4309 | else {\r |
| 4310 | r = 8;\r |
| 4311 | UNGET;\r |
| 4312 | c = '0';\r |
| 4313 | }\r |
| 4314 | }\r |
| 4315 | \r |
| 4316 | n = 0; /* decode number */\r |
| 4317 | while ((nchar-- != 0) && (v = digit(c, r)) >= 0) {\r |
| 4318 | if (v >= r) /* out of range! */\r |
| 4319 | exprerr(9);\r |
| 4320 | \r |
| 4321 | n = r*n + v;\r |
| 4322 | \r |
| 4323 | c = GETNEXT;\r |
| 4324 | if (c == '.') { // maybe make it decimal?\r |
| 4325 | c = GETNEXT;\r |
| 4326 | break;\r |
| 4327 | }\r |
| 4328 | }\r |
| 4329 | \r |
| 4330 | UNGET;\r |
| 4331 | return (n);\r |
| 4332 | }\r |
| 4333 | \r |
| 4334 | // ---------------------------------------------------------------------------------\r |
| 4335 | // digit - get digit value of character c in radix r\r |
| 4336 | // ---------------------------------------------------------------------------------\r |
| 4337 | \r |
| 4338 | int digit (int c, int r)\r |
| 4339 | {\r |
| 4340 | if (r == 16) {\r |
| 4341 | if (c >= 'A' && c <= 'F')\r |
| 4342 | return (c - 'A' + 10);\r |
| 4343 | }\r |
| 4344 | \r |
| 4345 | if (c >= '0' && c <= '9')\r |
| 4346 | return (c - '0');\r |
| 4347 | \r |
| 4348 | return (-1);\r |
| 4349 | }\r |
| 4350 | \r |
| 4351 | // ---------------------------------------------------------------------------------\r |
| 4352 | // c_esc - handle C character escape\r |
| 4353 | // ---------------------------------------------------------------------------------\r |
| 4354 | \r |
| 4355 | int c_esc (int c)\r |
| 4356 | {\r |
| 4357 | if (c != '\\') /* not escaped */\r |
| 4358 | return(c);\r |
| 4359 | \r |
| 4360 | if ((c = GETNEXT) == '\0') /* must be followed by something */\r |
| 4361 | exprerr(10);\r |
| 4362 | if ((c >= 'A') && (c <= 'Z')) /* handle upper case */\r |
| 4363 | c += 'a'-'A';\r |
| 4364 | if (ctype[c] == LETTER) /* control character abbrevs */\r |
| 4365 | switch (c) {\r |
| 4366 | case 'b': c = '\b'; break; /* backspace */\r |
| 4367 | case 'e': c = 27 ; break; /* escape */\r |
| 4368 | case 'f': c = '\f'; break; /* formfeed */\r |
| 4369 | case 'n': c = '\n'; break; /* newline */\r |
| 4370 | case 'r': c = '\r'; break; /* return */\r |
| 4371 | case 't': c = '\t'; break; /* horiz. tab */\r |
| 4372 | }\r |
| 4373 | else if (ctype[c] == DIGIT) { /* get character by the numbers */\r |
| 4374 | c = c_number(c,8,3); /* force octal */\r |
| 4375 | }\r |
| 4376 | \r |
| 4377 | return c;\r |
| 4378 | }\r |
| 4379 | \r |
| 4380 | // ---------------------------------------------------------------------------------\r |
| 4381 | // exprerr - note an expression syntax error. Longjumps back to caller with failure code\r |
| 4382 | // ---------------------------------------------------------------------------------\r |
| 4383 | \r |
| 4384 | void exprerr (int n)\r |
| 4385 | {\r |
| 4386 | char msg[256];\r |
| 4387 | int nex = exprptr-oexprptr;\r |
| 4388 | \r |
| 4389 | strncpy(msg, oexprptr, nex); // show where the problem was\r |
| 4390 | msg[nex] = '\0';\r |
| 4391 | strcat(msg, " << ");\r |
| 4392 | strcat(msg, errstr[n]);\r |
| 4393 | \r |
| 4394 | asm_error(msg);\r |
| 4395 | \r |
| 4396 | exprerrno = n;\r |
| 4397 | longjmp(exprjmp, 1);\r |
| 4398 | }\r |
| 4399 | \r |
| 4400 | /* ------------------------------------------------------------------------ \r |
| 4401 | * upcase - force a string to uppercase (ASCII)\r |
| 4402 | * ------------------------------------------------------------------------ */\r |
| 4403 | \r |
| 4404 | char *upcase (char *str)\r |
| 4405 | {\r |
| 4406 | char *s;\r |
| 4407 | \r |
| 4408 | for (s = str; *s; s++) {\r |
| 4409 | if (*s >= 'a' && *s <= 'z')\r |
| 4410 | *s -= 32;\r |
| 4411 | } \r |
| 4412 | \r |
| 4413 | return str;\r |
| 4414 | }\r |
| 4415 | \r |
| 4416 | /* ------------------------------------------------------------------------ \r |
| 4417 | * hollerith table for IPL card ident field\r |
| 4418 | * ------------------------------------------------------------------------ */\r |
| 4419 | \r |
| 4420 | typedef struct {\r |
| 4421 | int hollerith;\r |
| 4422 | char ascii;\r |
| 4423 | } CPCODE;\r |
| 4424 | \r |
| 4425 | static CPCODE cardcode_029[] =\r |
| 4426 | {\r |
| 4427 | 0x0000, ' ',\r |
| 4428 | 0x8000, '&', // + in 026 Fortran\r |
| 4429 | 0x4000, '-',\r |
| 4430 | 0x2000, '0',\r |
| 4431 | 0x1000, '1',\r |
| 4432 | 0x0800, '2',\r |
| 4433 | 0x0400, '3',\r |
| 4434 | 0x0200, '4',\r |
| 4435 | 0x0100, '5',\r |
| 4436 | 0x0080, '6',\r |
| 4437 | 0x0040, '7',\r |
| 4438 | 0x0020, '8',\r |
| 4439 | 0x0010, '9',\r |
| 4440 | 0x9000, 'A',\r |
| 4441 | 0x8800, 'B',\r |
| 4442 | 0x8400, 'C',\r |
| 4443 | 0x8200, 'D',\r |
| 4444 | 0x8100, 'E',\r |
| 4445 | 0x8080, 'F',\r |
| 4446 | 0x8040, 'G',\r |
| 4447 | 0x8020, 'H',\r |
| 4448 | 0x8010, 'I',\r |
| 4449 | 0x5000, 'J',\r |
| 4450 | 0x4800, 'K',\r |
| 4451 | 0x4400, 'L',\r |
| 4452 | 0x4200, 'M',\r |
| 4453 | 0x4100, 'N',\r |
| 4454 | 0x4080, 'O',\r |
| 4455 | 0x4040, 'P',\r |
| 4456 | 0x4020, 'Q',\r |
| 4457 | 0x4010, 'R',\r |
| 4458 | 0x3000, '/',\r |
| 4459 | 0x2800, 'S',\r |
| 4460 | 0x2400, 'T',\r |
| 4461 | 0x2200, 'U',\r |
| 4462 | 0x2100, 'V',\r |
| 4463 | 0x2080, 'W',\r |
| 4464 | 0x2040, 'X',\r |
| 4465 | 0x2020, 'Y',\r |
| 4466 | 0x2010, 'Z',\r |
| 4467 | 0x0820, ':',\r |
| 4468 | 0x0420, '#', // = in 026 Fortran\r |
| 4469 | 0x0220, '@', // ' in 026 Fortran\r |
| 4470 | 0x0120, '\'',\r |
| 4471 | 0x00A0, '=',\r |
| 4472 | 0x0060, '"',\r |
| 4473 | 0x8820, 'c', // cent\r |
| 4474 | 0x8420, '.',\r |
| 4475 | 0x8220, '<', // ) in 026 Fortran\r |
| 4476 | 0x8120, '(',\r |
| 4477 | 0x80A0, '+',\r |
| 4478 | 0x8060, '|',\r |
| 4479 | 0x4820, '!',\r |
| 4480 | 0x4420, '$',\r |
| 4481 | 0x4220, '*',\r |
| 4482 | 0x4120, ')',\r |
| 4483 | 0x40A0, ';',\r |
| 4484 | 0x4060, 'n', // not\r |
| 4485 | 0x2820, 'x', // what?\r |
| 4486 | 0x2420, ',',\r |
| 4487 | 0x2220, '%', // ( in 026 Fortran\r |
| 4488 | 0x2120, '_',\r |
| 4489 | 0x20A0, '>',\r |
| 4490 | 0x2060, '>',\r |
| 4491 | };\r |
| 4492 | \r |
| 4493 | int ascii_to_hollerith (int ch)\r |
| 4494 | {\r |
| 4495 | int i;\r |
| 4496 | \r |
| 4497 | for (i = 0; i < sizeof(cardcode_029) / sizeof(CPCODE); i++)\r |
| 4498 | if (cardcode_029[i].ascii == ch)\r |
| 4499 | return cardcode_029[i].hollerith;\r |
| 4500 | \r |
| 4501 | return 0;\r |
| 4502 | }\r |
| 4503 | \r |
| 4504 | /* ------------------------------------------------------------------------ \r |
| 4505 | * detab - replace tabs with spaces for listing files\r |
| 4506 | * ------------------------------------------------------------------------ */\r |
| 4507 | \r |
| 4508 | char *detab (char *instr)\r |
| 4509 | {\r |
| 4510 | static char outstr[256];\r |
| 4511 | char *out = outstr;\r |
| 4512 | int col = 0;\r |
| 4513 | \r |
| 4514 | while (*instr) {\r |
| 4515 | if (*instr == '\t') {\r |
| 4516 | do {\r |
| 4517 | *out++ = ' ';\r |
| 4518 | col++;\r |
| 4519 | }\r |
| 4520 | while (col & 7);\r |
| 4521 | }\r |
| 4522 | else {\r |
| 4523 | *out++ = *instr;\r |
| 4524 | col++;\r |
| 4525 | }\r |
| 4526 | \r |
| 4527 | instr++;\r |
| 4528 | }\r |
| 4529 | \r |
| 4530 | *out = '\0';\r |
| 4531 | \r |
| 4532 | return outstr;\r |
| 4533 | }\r |
| 4534 | \r |
| 4535 | #ifndef _WIN32\r |
| 4536 | \r |
| 4537 | int strnicmp (char *a, char *b, int n)\r |
| 4538 | {\r |
| 4539 | int ca, cb;\r |
| 4540 | \r |
| 4541 | for (;;) {\r |
| 4542 | if (--n < 0) // still equal after n characters? quit now\r |
| 4543 | return 0;\r |
| 4544 | \r |
| 4545 | if ((ca = *a) == 0) // get character, stop on null terminator\r |
| 4546 | return *b ? -1 : 0;\r |
| 4547 | \r |
| 4548 | if (ca >= 'a' && ca <= 'z') // fold lowercase to uppercase\r |
| 4549 | ca -= 32;\r |
| 4550 | \r |
| 4551 | cb = *b;\r |
| 4552 | if (cb >= 'a' && cb <= 'z')\r |
| 4553 | cb -= 32;\r |
| 4554 | \r |
| 4555 | if ((ca -= cb) != 0) // if different, return comparison\r |
| 4556 | return ca;\r |
| 4557 | \r |
| 4558 | a++, b++;\r |
| 4559 | }\r |
| 4560 | }\r |
| 4561 | \r |
| 4562 | int strcmpi (char *a, char *b)\r |
| 4563 | {\r |
| 4564 | int ca, cb;\r |
| 4565 | \r |
| 4566 | for (;;) {\r |
| 4567 | if ((ca = *a) == 0) // get character, stop on null terminator\r |
| 4568 | return *b ? -1 : 0;\r |
| 4569 | \r |
| 4570 | if (ca >= 'a' && ca <= 'z') // fold lowercase to uppercase\r |
| 4571 | ca -= 32;\r |
| 4572 | \r |
| 4573 | cb = *b;\r |
| 4574 | if (cb >= 'a' && cb <= 'z')\r |
| 4575 | cb -= 32;\r |
| 4576 | \r |
| 4577 | if ((ca -= cb) != 0) // if different, return comparison\r |
| 4578 | return ca;\r |
| 4579 | \r |
| 4580 | a++, b++;\r |
| 4581 | }\r |
| 4582 | }\r |
| 4583 | \r |
| 4584 | #endif\r |
| 4585 | \r |