| 1 | /* s3_sys.c: IBM System/3 system interface\r |
| 2 | \r |
| 3 | Copyright (c) 2001-2005, Charles E. Owen\r |
| 4 | \r |
| 5 | Permission is hereby granted, free of charge, to any person obtaining a\r |
| 6 | copy of this software and associated documentation files (the "Software"),\r |
| 7 | to deal in the Software without restriction, including without limitation\r |
| 8 | the rights to use, copy, modify, merge, publish, distribute, sublicense,\r |
| 9 | and/or sell copies of the Software, and to permit persons to whom the\r |
| 10 | Software is furnished to do so, subject to the following conditions:\r |
| 11 | \r |
| 12 | The above copyright notice and this permission notice shall be included in\r |
| 13 | all copies or substantial portions of the Software.\r |
| 14 | \r |
| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r |
| 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r |
| 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r |
| 18 | ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r |
| 19 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r |
| 20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r |
| 21 | \r |
| 22 | Except as contained in this notice, the name of Charles E. Owen shall not be\r |
| 23 | used in advertising or otherwise to promote the sale, use or other dealings\r |
| 24 | in this Software without prior written authorization from Charles E. Owen.\r |
| 25 | */\r |
| 26 | \r |
| 27 | #include <ctype.h>\r |
| 28 | #include "s3_defs.h"\r |
| 29 | \r |
| 30 | extern DEVICE cpu_dev;\r |
| 31 | extern DEVICE pkb_dev;\r |
| 32 | extern DEVICE cdr_dev;\r |
| 33 | extern DEVICE cdp_dev;\r |
| 34 | extern DEVICE stack_dev;\r |
| 35 | extern DEVICE lpt_dev;\r |
| 36 | extern DEVICE r1_dev;\r |
| 37 | extern DEVICE f1_dev;\r |
| 38 | extern DEVICE r2_dev;\r |
| 39 | extern DEVICE f2_dev;\r |
| 40 | extern UNIT cpu_unit;\r |
| 41 | extern REG cpu_reg[];\r |
| 42 | extern unsigned char M[];\r |
| 43 | extern int32 saved_PC, IAR[];\r |
| 44 | extern char ebcdic_to_ascii[256];\r |
| 45 | char *parse_addr(char *cptr, char *gbuf, int32 *addr, int32 *addrtype);\r |
| 46 | \r |
| 47 | int32 printf_sym (FILE *of, char *strg, int32 addr, uint32 *val,\r |
| 48 | UNIT *uptr, int32 sw);\r |
| 49 | \r |
| 50 | /* SCP data structures\r |
| 51 | \r |
| 52 | sim_name simulator name string\r |
| 53 | sim_PC pointer to saved PC register descriptor\r |
| 54 | sim_emax number of words needed for examine\r |
| 55 | sim_devices array of pointers to simulated devices\r |
| 56 | sim_stop_messages array of pointers to stop messages\r |
| 57 | sim_load binary loader\r |
| 58 | */\r |
| 59 | \r |
| 60 | char sim_name[] = "System/3";\r |
| 61 | \r |
| 62 | REG *sim_PC = &cpu_reg[0];\r |
| 63 | \r |
| 64 | int32 sim_emax = 6;\r |
| 65 | \r |
| 66 | DEVICE *sim_devices[] = {\r |
| 67 | &cpu_dev, \r |
| 68 | &pkb_dev,\r |
| 69 | &cdr_dev,\r |
| 70 | &cdp_dev,\r |
| 71 | &stack_dev,\r |
| 72 | &lpt_dev,\r |
| 73 | &r1_dev,\r |
| 74 | &f1_dev,\r |
| 75 | &r2_dev,\r |
| 76 | &f2_dev,\r |
| 77 | NULL\r |
| 78 | };\r |
| 79 | \r |
| 80 | const char *sim_stop_messages[] = {\r |
| 81 | "Unknown error",\r |
| 82 | "Unknown I/O Instruction",\r |
| 83 | "HALT instruction",\r |
| 84 | "Breakpoint",\r |
| 85 | "Invalid Opcode",\r |
| 86 | "Invalid Qbyte",\r |
| 87 | "Invalid Address",\r |
| 88 | "Invalid Device Command",\r |
| 89 | "ATTN Card Reader"\r |
| 90 | };\r |
| 91 | \r |
| 92 | /* This is the opcode master defintion table. Each possible opcode mnemonic\r |
| 93 | is defined here, with enough information to translate to and from\r |
| 94 | symbolic to binary machine code. \r |
| 95 | First field is the opcode's mnemonic\r |
| 96 | Second field is the hex of the right nybble of the binary opcode\r |
| 97 | Third field is the Q code for those with implicit Q codes\r |
| 98 | Fourth field is the symbolic format of the operands:\r |
| 99 | 0 - (Q-byte),(R-byte)\r |
| 100 | 1 - (Q-byte),(Address)\r |
| 101 | 2 - (Address),(Address),(Qbyte)\r |
| 102 | 3 - (Address),(Qbyte)\r |
| 103 | 4 - (device),(modifier),(function) -- these 3 make up qbyte\r |
| 104 | 5 - (device),(modifier),(function),(control)\r |
| 105 | 6 - (device),(modifier),(function),(Address)\r |
| 106 | 7 - (displacement) -- Q byte is implicit in opcode\r |
| 107 | 8 - (address) -- Qbyte is implicit in opcode\r |
| 108 | 9 - (Address),(Address) -- Qbyte is implicit in opcode\r |
| 109 | Fifth Field is the group number:\r |
| 110 | 0 - Command Group (left op nybble is F)\r |
| 111 | 1 - One Address Operations A (Left Nybble C, D, or E)\r |
| 112 | 2 - Two Address Operations (Left Nybble 0,1,2,4,5,6,8,9, or A)\r |
| 113 | 3 - One Address Operations B (left Nybble 3, 7, or B)\r |
| 114 | \r |
| 115 | There is duplication in this table -- IBM defines different opcodes\r |
| 116 | that resolve to the same binary machine instruction -- e.g. JE and\r |
| 117 | JZ. On input this is no problem, on output, define the one you\r |
| 118 | want to appear first, the second will never appear on output.\r |
| 119 | */ \r |
| 120 | \r |
| 121 | int32 nopcode = 75;\r |
| 122 | struct opdef opcode[75] = {\r |
| 123 | "HPL", 0x00,0,0,0, /* Halt Program Level */\r |
| 124 | "A", 0x06,0,1,3, /* Add to Register: A R,AADD */\r |
| 125 | "ST", 0x04,0,1,3, /* Store Register */\r |
| 126 | "L", 0x05,0,1,3, /* Load Register */\r |
| 127 | "LA", 0x02,0,1,1, /* Load Address */\r |
| 128 | "ZAZ", 0x04,0,2,2, /* Zero and Add Zoned */\r |
| 129 | "AZ", 0x06,0,2,2, /* Add Zoned Decimal */\r |
| 130 | "SZ", 0x07,0,2,2, /* Subtract Zoned Decimal */\r |
| 131 | "ALC", 0x0E,0,2,2, /* Add Logical: ALC BADD,AADD,LEN */\r |
| 132 | "SLC", 0x0F,0,2,2, /* Sub Logical: SLC BADD,AADD,LEN */\r |
| 133 | "MVC", 0x0C,0,2,2, /* Move Chars MVX BADD,AADD,LEN */\r |
| 134 | "ED", 0x0A,0,2,2, /* Edit: ED BADD,AADD,LEN */\r |
| 135 | "ITC", 0x0B,0,2,2, /* Insert Chars: ITC BADD,AADD,LEN */\r |
| 136 | "CLC", 0x0D,0,2,2, /* Compare Logical: CLC BADD,AADD,LEN */\r |
| 137 | "MVI", 0x0C,0,3,3, /* Move Immediate */\r |
| 138 | "SBN", 0x0A,0,3,3, /* Set Bits On */\r |
| 139 | "SBF", 0x0B,0,3,3, /* Set Bits Off */\r |
| 140 | "CLI", 0x0D,0,3,3, /* Compare Immediate */\r |
| 141 | "TBN", 0x08,0,3,3, /* Test Bits On */\r |
| 142 | "TBF", 0x09,0,3,3, /* Test Bits Off */\r |
| 143 | "APL", 0x01,0,4,0, /* Advance Program Level */\r |
| 144 | "SIO", 0x03,0,5,0, /* Start I/O */\r |
| 145 | "SNS", 0x00,0,6,3, /* Sense I/O */\r |
| 146 | "LIO", 0x01,0,6,3, /* Load I/O */\r |
| 147 | "TIO", 0x01,0,6,1, /* Test I/O */\r |
| 148 | "J", 0x02,0,7,0, /* Jump Unconditional */\r |
| 149 | "J", 0x02,0x87,7,0, /* Alternate J */\r |
| 150 | "JH", 0x02,132,7,0, /* Jump if High */\r |
| 151 | "JL", 0x02,130,7,0, /* Jump if Low */\r |
| 152 | "JE", 0x02,129,7,0, /* Jump if Equal */\r |
| 153 | "JNH", 0x02,4,7,0, /* Jump if Not High */\r |
| 154 | "JNL", 0x02,2,7,0, /* Jump if Not Low */\r |
| 155 | "JNE", 0x02,1,7,0, /* Jump if Not Equal */\r |
| 156 | "JOZ", 0x02,136,7,0, /* Jump if Overflow Zoned */\r |
| 157 | "JOL", 0x02,160,7,0, /* Jump if Overflow Logical */\r |
| 158 | "JNOZ", 0x02,8,7,0, /* Jump if No Overflow Zoned */\r |
| 159 | "JNOL", 0x02,32,7,0, /* Jump if No Overflow Logical */\r |
| 160 | "JT", 0x02,16,7,0, /* Jump if True */\r |
| 161 | "JF", 0x02,144,7,0, /* Jump if False */\r |
| 162 | "JP", 0x02,132,7,0, /* Jump if Plus */\r |
| 163 | "JM", 0x02,130,7,0, /* Jump if Minus */\r |
| 164 | "JZ", 0x02,129,7,0, /* Jump if Zero */\r |
| 165 | "JNP", 0x02,4,7,0, /* Jump if Not Plus */\r |
| 166 | "JNM", 0x02,2,7,0, /* Jump if Not Minus */\r |
| 167 | "JNZ", 0x02,1,7,0, /* Jump if Not Zero */\r |
| 168 | "NOPJ", 0x02,0x80,7,0, /* Never Jump - NOP */\r |
| 169 | "B", 0x00,0x00,8,1, /* Branch Unconditional */\r |
| 170 | "B", 0x00,0x87,8,1, /* Alternate B */\r |
| 171 | "BH", 0x00,0x84,8,1, /* Branch if High */\r |
| 172 | "BL", 0x00,0x82,8,1, /* Branch if Low */\r |
| 173 | "BE", 0x00,0x81,8,1, /* Branch if Equal */\r |
| 174 | "BNH", 0x00,0x04,8,1, /* Branch if Not High */\r |
| 175 | "BNL", 0x00,0x02,8,1, /* Branch if Not Low */\r |
| 176 | "BNE", 0x00,0x01,8,1, /* Branch if Not Equal */\r |
| 177 | "BOZ", 0x00,0x88,8,1, /* Branch if Overflow Zoned */\r |
| 178 | "BOL", 0x00,0xA0,8,1, /* Branch if Overflow Logical */\r |
| 179 | "BNOZ", 0x00,0x08,8,1, /* Branch if No Overflow Zoned */\r |
| 180 | "BNOL", 0x00,0x20,8,1, /* Branch if No Overflow Logical */\r |
| 181 | "BT", 0x00,0x10,8,1, /* Branch if True */\r |
| 182 | "BF", 0x00,0x90,8,1, /* Branch if False */\r |
| 183 | "BP", 0x00,0x84,8,1, /* Branch if Plus */\r |
| 184 | "BM", 0x00,0x82,8,1, /* Branch if Minus */\r |
| 185 | "BZ", 0x00,0x81,8,1, /* Branch if Zero */\r |
| 186 | "BNP", 0x00,0x04,8,1, /* Branch if Not Plus */\r |
| 187 | "BNM", 0x00,0x02,8,1, /* Branch if Not Minus */\r |
| 188 | "BNZ", 0x00,0x01,8,1, /* Branch if Not Zero */\r |
| 189 | "NOPB", 0x00,0x80,8,1, /* Never Branch - NOP */\r |
| 190 | "MZZ", 0x08,0,9,2, /* Move Zone to Zone */\r |
| 191 | "MNZ", 0x08,1,9,2, /* Move Numeric to Zone */\r |
| 192 | "MZN", 0x08,2,9,2, /* Move Zone to Numeric */\r |
| 193 | "MNN", 0x08,3,9,2, /* Move Numeric to Numeric */\r |
| 194 | "MVX", 0x08,0,2,2, /* Move Hex: MVX BADD,AADD,CODE */\r |
| 195 | "JC", 0x02,0,3,0, /* Jump on Specified Condition bits */\r |
| 196 | "BC", 0x00,0,3,1, /* Branch on Specified Condition */\r |
| 197 | "***", 0x00,0,0,0\r |
| 198 | };\r |
| 199 | \r |
| 200 | int32 regcode[15] = { 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01,\r |
| 201 | 0x80, 0xC0, 0xA0, 0x90, 0x88, 0x84, 0x82, 0x81\r |
| 202 | };\r |
| 203 | \r |
| 204 | char regname[15][8] = { "(P2IAR)",\r |
| 205 | "(P1IAR)",\r |
| 206 | "(IAR)",\r |
| 207 | "(ARR)",\r |
| 208 | "(PSR)",\r |
| 209 | "(XR2)",\r |
| 210 | "(XR1)",\r |
| 211 | "(IAR0)",\r |
| 212 | "(IAR1)",\r |
| 213 | "(IAR2)",\r |
| 214 | "(IAR3)",\r |
| 215 | "(IAR4)",\r |
| 216 | "(IAR5)",\r |
| 217 | "(IAR6)",\r |
| 218 | "(IAR7)"\r |
| 219 | }; \r |
| 220 | \r |
| 221 | /* This is the binary loader. The input file is considered to be\r |
| 222 | a string of literal bytes with no special format. The\r |
| 223 | load starts at the current value of the P1IAR.\r |
| 224 | */\r |
| 225 | \r |
| 226 | int32 sim_load (FILE *fileref, char *cptr, char *fnam, int flag)\r |
| 227 | {\r |
| 228 | int32 i, addr = 0, cnt = 0;\r |
| 229 | \r |
| 230 | if ((*cptr != 0) || (flag != 0)) return SCPE_ARG;\r |
| 231 | addr = IAR[8];\r |
| 232 | while ((i = getc (fileref)) != EOF) {\r |
| 233 | M[addr] = i & 0xff;\r |
| 234 | addr++;\r |
| 235 | cnt++;\r |
| 236 | } /* end while */\r |
| 237 | printf ("%d Bytes loaded.\n", cnt);\r |
| 238 | return (SCPE_OK);\r |
| 239 | }\r |
| 240 | \r |
| 241 | /* Symbolic output\r |
| 242 | \r |
| 243 | Inputs:\r |
| 244 | *of = output stream\r |
| 245 | addr = current PC\r |
| 246 | *val = pointer to values\r |
| 247 | *uptr = pointer to unit\r |
| 248 | sw = switches\r |
| 249 | Outputs:\r |
| 250 | status = error code\r |
| 251 | */\r |
| 252 | \r |
| 253 | int32 fprint_sym (FILE *of, int32 addr, uint32 *val,\r |
| 254 | UNIT *uptr, int32 sw)\r |
| 255 | {\r |
| 256 | int32 r;\r |
| 257 | char strg[256];\r |
| 258 | \r |
| 259 | strcpy(strg, "");\r |
| 260 | r = printf_sym(of, strg, addr, val, uptr, sw);\r |
| 261 | if (sw & SWMASK ('A'))\r |
| 262 | strcpy(strg, "");\r |
| 263 | else\r |
| 264 | fprintf(of, "%s", strg);\r |
| 265 | return (r);\r |
| 266 | }\r |
| 267 | \r |
| 268 | int32 printf_sym (FILE *of, char *strg, int32 addr, uint32 *val,\r |
| 269 | UNIT *uptr, int32 sw)\r |
| 270 | {\r |
| 271 | int32 cflag, c1, c2, group, len1, len2, inst, aaddr, baddr;\r |
| 272 | int32 oplen, groupno, i, j, vpos, qbyte, da, m, n;\r |
| 273 | char bld[128], bldaddr[32], boperand[32], aoperand[32];\r |
| 274 | int32 blk[16], blt[16];\r |
| 275 | int32 blkadd;\r |
| 276 | \r |
| 277 | cflag = (uptr == NULL) || (uptr == &cpu_unit);\r |
| 278 | c1 = val[0] & 0xff;\r |
| 279 | if (sw & SWMASK ('A')) {\r |
| 280 | for (i = 0; i < 16; i++) {\r |
| 281 | blkadd = addr + (i*16);\r |
| 282 | for (j = 0; j < 16; j++) {\r |
| 283 | blk[j] = M[blkadd+j] & 0xff;\r |
| 284 | c2 = ebcdic_to_ascii[blk[j]];\r |
| 285 | if (c2 < 040 || c2 > 0177 || blk[j] == 07) {\r |
| 286 | blt[j] = '.';\r |
| 287 | } else { \r |
| 288 | blt[j] = c2;\r |
| 289 | }\r |
| 290 | }\r |
| 291 | if (i == 0) {\r |
| 292 | fprintf(of, "%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X [%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c]\n ",\r |
| 293 | blk[0], blk[1], blk[2], blk[3], blk[4], blk[5], blk[6], blk[7],\r |
| 294 | blk[8], blk[9], blk[10], blk[11], blk[12], blk[13], blk[14], blk[15],\r |
| 295 | blt[0], blt[1], blt[2], blt[3], blt[4], blt[5], blt[6], blt[7],\r |
| 296 | blt[8], blt[9], blt[10], blt[11], blt[12], blt[13], blt[14], blt[15]);\r |
| 297 | } else {\r |
| 298 | fprintf(of, "%X\t%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X [%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c]\n ",\r |
| 299 | blkadd, blk[0], blk[1], blk[2], blk[3], blk[4], blk[5], blk[6], blk[7],\r |
| 300 | blk[8], blk[9], blk[10], blk[11], blk[12], blk[13], blk[14], blk[15],\r |
| 301 | blt[0], blt[1], blt[2], blt[3], blt[4], blt[5], blt[6], blt[7],\r |
| 302 | blt[8], blt[9], blt[10], blt[11], blt[12], blt[13], blt[14], blt[15]);\r |
| 303 | } \r |
| 304 | } \r |
| 305 | return SCPE_OK; }\r |
| 306 | if (sw & SWMASK ('C')) {\r |
| 307 | c2 = ebcdic_to_ascii[c1];\r |
| 308 | if (c2 < 040 || c2 > 0177) {\r |
| 309 | sprintf(strg, "<%02X>", c1 & 0xff);\r |
| 310 | } else { \r |
| 311 | sprintf (strg, "%c", c2 & 0xff);\r |
| 312 | }\r |
| 313 | return SCPE_OK; }\r |
| 314 | if (!(sw & SWMASK ('M'))) return SCPE_ARG;\r |
| 315 | \r |
| 316 | inst = val[0] & 0x0f;\r |
| 317 | len1 = (val[0] >> 6) & 3;\r |
| 318 | len2 = (val[0] >> 4) & 3;\r |
| 319 | group = (val[0] >> 4) & 0x0f;\r |
| 320 | qbyte = val[1];\r |
| 321 | \r |
| 322 | /* Get total length of instruction */\r |
| 323 | \r |
| 324 | if (group == 0x0f) {\r |
| 325 | oplen = 3;\r |
| 326 | } else {\r |
| 327 | oplen = 2; \r |
| 328 | if (len1 == 0) oplen += 2;\r |
| 329 | if (len1 == 1 || len1 == 2) oplen++;\r |
| 330 | if (len2 == 0) oplen += 2;\r |
| 331 | if (len2 == 1 || len2 == 2) oplen++;\r |
| 332 | }\r |
| 333 | \r |
| 334 | /* Find which group it belongs to */\r |
| 335 | \r |
| 336 | switch (group) {\r |
| 337 | case 0x0f: \r |
| 338 | groupno = 0;\r |
| 339 | break;\r |
| 340 | case 0x0c:\r |
| 341 | case 0x0d:\r |
| 342 | case 0x0e:\r |
| 343 | groupno = 1;\r |
| 344 | break;\r |
| 345 | case 0x03:\r |
| 346 | case 0x07:\r |
| 347 | case 0x0b:\r |
| 348 | groupno = 3;\r |
| 349 | break;\r |
| 350 | default:\r |
| 351 | groupno = 2;\r |
| 352 | break;\r |
| 353 | } \r |
| 354 | \r |
| 355 | /* find the table entry */\r |
| 356 | \r |
| 357 | for (i = 0; i < nopcode; i++) {\r |
| 358 | if (opcode[i].form < 7) { /* Explicit Q */\r |
| 359 | if (opcode[i].group == groupno &&\r |
| 360 | opcode[i].opmask == inst) break;\r |
| 361 | } else { /* Implicit Q */\r |
| 362 | if (opcode[i].group == groupno &&\r |
| 363 | opcode[i].opmask == inst &&\r |
| 364 | opcode[i].q == qbyte) break;\r |
| 365 | } \r |
| 366 | }\r |
| 367 | \r |
| 368 | /* print the opcode */\r |
| 369 | \r |
| 370 | if (i >= nopcode) {\r |
| 371 | sprintf(strg, "%02X", val[0]);\r |
| 372 | oplen = 1;\r |
| 373 | } else {\r |
| 374 | sprintf(bld, "%s ", opcode[i].op);\r |
| 375 | \r |
| 376 | /* Extract the addresses into aaddr and baddr */\r |
| 377 | \r |
| 378 | strcpy(aoperand, "ERROR");\r |
| 379 | strcpy(boperand, "ERROR");\r |
| 380 | vpos = 2;\r |
| 381 | aaddr = baddr = 0;\r |
| 382 | switch (len1) {\r |
| 383 | case 0:\r |
| 384 | baddr = ((val[vpos] << 8) & 0xff00) | (val[vpos + 1] & 0x00ff);\r |
| 385 | sprintf(boperand, "%04X", baddr);\r |
| 386 | vpos = 4;\r |
| 387 | break;\r |
| 388 | case 1:\r |
| 389 | baddr = val[vpos] & 255;\r |
| 390 | sprintf(boperand, "(%02X,XR1)", baddr);\r |
| 391 | vpos = 3;\r |
| 392 | break;\r |
| 393 | case 2:\r |
| 394 | baddr = val[vpos] & 255;\r |
| 395 | sprintf(boperand, "(%02X,XR2)", baddr);\r |
| 396 | vpos = 3;\r |
| 397 | break;\r |
| 398 | default:\r |
| 399 | baddr = 0;\r |
| 400 | break;\r |
| 401 | } \r |
| 402 | switch (len2) {\r |
| 403 | case 0:\r |
| 404 | aaddr = ((val[vpos] << 8) & 0xff00) | (val[vpos + 1] & 0x00ff);\r |
| 405 | if (group == 0x0C || group == 0x0D || group == 0x0E)\r |
| 406 | sprintf(boperand, "%04X", aaddr);\r |
| 407 | else\r |
| 408 | sprintf(aoperand, "%04X", aaddr);\r |
| 409 | break; \r |
| 410 | case 1:\r |
| 411 | aaddr = val[vpos] & 255;\r |
| 412 | if (group == 0x0C || group == 0x0D || group == 0x0E)\r |
| 413 | sprintf(boperand, "(%02X,XR1)", aaddr);\r |
| 414 | else\r |
| 415 | sprintf(aoperand, "(%02X,XR1)", aaddr);\r |
| 416 | break;\r |
| 417 | case 2:\r |
| 418 | aaddr = val[vpos] & 255;\r |
| 419 | if (group == 0x0C || group == 0x0D || group == 0x0E)\r |
| 420 | sprintf(boperand, "(%02X,XR2)", aaddr);\r |
| 421 | else\r |
| 422 | sprintf(aoperand, "(%02X,XR2)", aaddr);\r |
| 423 | break;\r |
| 424 | default:\r |
| 425 | aaddr = 0;\r |
| 426 | break;\r |
| 427 | } \r |
| 428 | \r |
| 429 | /* Display the operands in the correct format */\r |
| 430 | \r |
| 431 | da = (qbyte >> 4) & 0x0f; \r |
| 432 | m = (qbyte >> 3) & 0x01;\r |
| 433 | n = (qbyte) & 0x07;\r |
| 434 | \r |
| 435 | switch (opcode[i].form) {\r |
| 436 | case 0:\r |
| 437 | sprintf(bldaddr, "%02X,%02X", qbyte, val[2]);\r |
| 438 | break;\r |
| 439 | case 1:\r |
| 440 | if (inst == 2 || inst == 4 || inst == 5 || inst == 6) {\r |
| 441 | for (i = 0; i < 16; i++) {\r |
| 442 | if (regcode[i] == qbyte)\r |
| 443 | break;\r |
| 444 | }\r |
| 445 | if (i < 16) {\r |
| 446 | sprintf(bldaddr, "%s,%s", regname[i], boperand);\r |
| 447 | } else {\r |
| 448 | sprintf(bldaddr, "%02X,%s", qbyte, boperand);\r |
| 449 | } \r |
| 450 | } else {\r |
| 451 | sprintf(bldaddr, "%02X,%s", qbyte, boperand);\r |
| 452 | }\r |
| 453 | break;\r |
| 454 | case 2:\r |
| 455 | if (inst > 9 || inst == 4 || inst == 6 || inst == 7)\r |
| 456 | qbyte++; /* special +1 for length display */\r |
| 457 | sprintf(bldaddr, "%s,%s,%d", boperand, aoperand, qbyte);\r |
| 458 | break;\r |
| 459 | case 3:\r |
| 460 | if (strcmp(opcode[i].op, "JC") == 0) {\r |
| 461 | sprintf(bldaddr, "%04X,%02X", addr+oplen+val[2], qbyte);\r |
| 462 | } else { \r |
| 463 | sprintf(bldaddr, "%s,%02X", boperand, qbyte);\r |
| 464 | } \r |
| 465 | break;\r |
| 466 | case 4: \r |
| 467 | sprintf(bldaddr, "%d,%d,%d", da, m, n);\r |
| 468 | break;\r |
| 469 | case 5:\r |
| 470 | sprintf(bldaddr, "%d,%d,%d,%02X", da, m, n, val[2]);\r |
| 471 | break;\r |
| 472 | case 6:\r |
| 473 | sprintf(bldaddr, "%d,%d,%d,%s", da, m, n, boperand);\r |
| 474 | break;\r |
| 475 | case 7:\r |
| 476 | sprintf(bldaddr, "%04X", addr+oplen+val[2]);\r |
| 477 | break;\r |
| 478 | case 8:\r |
| 479 | sprintf(bldaddr, "%s", boperand); \r |
| 480 | break;\r |
| 481 | default:\r |
| 482 | sprintf(bldaddr, "%s,%s", boperand, aoperand);\r |
| 483 | break;\r |
| 484 | } \r |
| 485 | sprintf(strg, "%s%s", bld, bldaddr);\r |
| 486 | } \r |
| 487 | \r |
| 488 | return -(oplen - 1);\r |
| 489 | }\r |
| 490 | \r |
| 491 | /* Symbolic input\r |
| 492 | \r |
| 493 | Inputs:\r |
| 494 | *cptr = pointer to input string\r |
| 495 | addr = current PC\r |
| 496 | *uptr = pointer to unit\r |
| 497 | *val = pointer to output values\r |
| 498 | sw = switches\r |
| 499 | Outputs:\r |
| 500 | status = error status\r |
| 501 | */\r |
| 502 | \r |
| 503 | int32 parse_sym (char *cptr, int32 addr, UNIT *uptr, uint32 *val, int32 sw)\r |
| 504 | {\r |
| 505 | int32 cflag, i = 0, j, r, oplen, addtyp, saveaddr, vptr;\r |
| 506 | char gbuf[CBUFSIZE];\r |
| 507 | \r |
| 508 | cflag = (uptr == NULL) || (uptr == &cpu_unit);\r |
| 509 | while (isspace (*cptr)) cptr++; /* absorb spaces */\r |
| 510 | if ((sw & SWMASK ('A')) || ((*cptr == '\'') && cptr++)) { /* ASCII char? */\r |
| 511 | if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */\r |
| 512 | val[0] = (unsigned int) cptr[0];\r |
| 513 | return SCPE_OK;\r |
| 514 | }\r |
| 515 | if ((sw & SWMASK ('C')) || ((*cptr == '"') && cptr++)) { /* ASCII string? */\r |
| 516 | if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */\r |
| 517 | val[0] = ((unsigned int) cptr[0] << 8) + (unsigned int) cptr[1];\r |
| 518 | return SCPE_OK;\r |
| 519 | }\r |
| 520 | \r |
| 521 | /* An instruction: get opcode (all characters until null, comma, left paren,\r |
| 522 | or numeric (including spaces).\r |
| 523 | */\r |
| 524 | \r |
| 525 | while (1) {\r |
| 526 | if (*cptr == ',' || *cptr == '\0' || *cptr == '(' ||\r |
| 527 | isdigit(*cptr))\r |
| 528 | break;\r |
| 529 | gbuf[i] = toupper(*cptr);\r |
| 530 | cptr++;\r |
| 531 | i++;\r |
| 532 | }\r |
| 533 | \r |
| 534 | /* kill trailing spaces if any */\r |
| 535 | gbuf[i] = '\0';\r |
| 536 | for (j = i - 1; gbuf[j] == ' '; j--) {\r |
| 537 | gbuf[j] = '\0';\r |
| 538 | }\r |
| 539 | \r |
| 540 | /* find opcode in table */\r |
| 541 | for (j = 0; j < nopcode; j++) {\r |
| 542 | if (strcmp(gbuf, opcode[j].op) == 0)\r |
| 543 | break;\r |
| 544 | }\r |
| 545 | if (j >= nopcode) /* not found */\r |
| 546 | return SCPE_ARG;\r |
| 547 | \r |
| 548 | oplen = 2; /* start with op & q */\r |
| 549 | \r |
| 550 | val[0] = opcode[j].opmask; /* store opcode right nybble */\r |
| 551 | \r |
| 552 | switch (opcode[j].form) { /* Get operands based on operand format */\r |
| 553 | case 0: /* Single Byte Operand */\r |
| 554 | if (*cptr == ',') cptr++;\r |
| 555 | cptr = get_glyph(cptr, gbuf, ','); /* Get Q Byte */\r |
| 556 | sscanf(gbuf, "%x", &r);\r |
| 557 | val[1] = r;\r |
| 558 | if (*cptr == ',') cptr++;\r |
| 559 | cptr = get_glyph(cptr, gbuf, 0); /* Get R Byte */\r |
| 560 | sscanf(gbuf, "%x", &r);\r |
| 561 | val[2] = r;\r |
| 562 | oplen = 3;\r |
| 563 | val[0] = 0xf0 | opcode[j].opmask;\r |
| 564 | break;\r |
| 565 | case 1:\r |
| 566 | if (*cptr == ',') cptr++;\r |
| 567 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 568 | if (opcode[j].opmask == 2 ||\r |
| 569 | opcode[j].opmask == 4 ||\r |
| 570 | opcode[j].opmask == 5 ||\r |
| 571 | opcode[j].opmask == 6) {\r |
| 572 | if (isdigit(gbuf[0])) {\r |
| 573 | sscanf(gbuf, "%x", &r);\r |
| 574 | } else {\r |
| 575 | for (i = 0; i < 16; i++) {\r |
| 576 | if (strcmp(gbuf, regname[i]) == 0)\r |
| 577 | break;\r |
| 578 | }\r |
| 579 | if (i < 16) {\r |
| 580 | r = regcode[i];\r |
| 581 | } else {\r |
| 582 | return SCPE_ARG;\r |
| 583 | } \r |
| 584 | } \r |
| 585 | } else {\r |
| 586 | sscanf(gbuf, "%x", &r);\r |
| 587 | } \r |
| 588 | if (r > 255) return SCPE_ARG;\r |
| 589 | val[1] = r;\r |
| 590 | if (*cptr == ',') cptr++;\r |
| 591 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 592 | switch(addtyp) {\r |
| 593 | case 0: \r |
| 594 | val[2] = (addr >> 8) & 0x00ff;\r |
| 595 | val[3] = addr & 0xff;\r |
| 596 | oplen = 4;\r |
| 597 | if (opcode[j].group == 1)\r |
| 598 | val[0] = 0xC0 | opcode[j].opmask;\r |
| 599 | else\r |
| 600 | val[0] = 0x30 | opcode[j].opmask;\r |
| 601 | break;\r |
| 602 | case 1: \r |
| 603 | val[2] = addr & 0xff;\r |
| 604 | oplen = 3;\r |
| 605 | if (opcode[j].group == 1)\r |
| 606 | val[0] = 0xD0 | opcode[j].opmask;\r |
| 607 | else \r |
| 608 | val[0] = 0x70 | opcode[j].opmask;\r |
| 609 | break;\r |
| 610 | case 2:\r |
| 611 | val[2] = addr & 0xff;\r |
| 612 | oplen = 3;\r |
| 613 | if (opcode[j].group == 1)\r |
| 614 | val[0] = 0xE0 | opcode[j].opmask;\r |
| 615 | else\r |
| 616 | val[0] = 0xB0 | opcode[j].opmask;\r |
| 617 | break;\r |
| 618 | default:\r |
| 619 | return SCPE_ARG;\r |
| 620 | break;\r |
| 621 | } \r |
| 622 | break;\r |
| 623 | case 2:\r |
| 624 | oplen = 2;\r |
| 625 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 626 | switch(addtyp) {\r |
| 627 | case 0: \r |
| 628 | val[2] = (addr >> 8) & 0xff;\r |
| 629 | val[3] = addr & 0xff;\r |
| 630 | oplen += 2;\r |
| 631 | vptr = 4;\r |
| 632 | val[0] = 0x00 | opcode[j].opmask;\r |
| 633 | break;\r |
| 634 | case 1: \r |
| 635 | val[2] = addr & 0xff;\r |
| 636 | oplen += 1;\r |
| 637 | vptr = 3;\r |
| 638 | val[0] = 0x40 | opcode[j].opmask;\r |
| 639 | break;\r |
| 640 | case 2:\r |
| 641 | val[2] = addr & 0xff;\r |
| 642 | oplen += 1;\r |
| 643 | vptr = 3;\r |
| 644 | val[0] = 0x80 | opcode[j].opmask;\r |
| 645 | break;\r |
| 646 | default:\r |
| 647 | return SCPE_ARG;\r |
| 648 | break;\r |
| 649 | }\r |
| 650 | if (*cptr == ',') cptr++;\r |
| 651 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 652 | switch(addtyp) {\r |
| 653 | case 0: \r |
| 654 | val[vptr] = (addr >> 8) & 0xff;\r |
| 655 | val[vptr+1] = addr & 0xff;\r |
| 656 | oplen += 2;\r |
| 657 | break;\r |
| 658 | case 1: \r |
| 659 | val[vptr] = addr & 0xff;\r |
| 660 | oplen += 1;\r |
| 661 | val[0] = 0x10 | val[0];\r |
| 662 | break;\r |
| 663 | case 2:\r |
| 664 | val[vptr] = addr & 0xff;\r |
| 665 | oplen += 1;\r |
| 666 | val[0] = 0x20 | val[0];\r |
| 667 | break;\r |
| 668 | default:\r |
| 669 | return SCPE_ARG;\r |
| 670 | break;\r |
| 671 | } \r |
| 672 | if (*cptr == ',') cptr++;\r |
| 673 | cptr = get_glyph(cptr, gbuf, 0);\r |
| 674 | sscanf(gbuf, "%d", &r);\r |
| 675 | if (opcode[j].opmask > 9 ||\r |
| 676 | opcode[j].opmask == 4 ||\r |
| 677 | opcode[j].opmask == 6 ||\r |
| 678 | opcode[j].opmask == 7) r--; /* special: length -1 */\r |
| 679 | val[1] = r;\r |
| 680 | if (*cptr == ',') cptr++;\r |
| 681 | break;\r |
| 682 | case 3:\r |
| 683 | saveaddr = addr;\r |
| 684 | if (*cptr == ',') cptr++;\r |
| 685 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 686 | switch(addtyp) {\r |
| 687 | case 0:\r |
| 688 | if (opcode[j].group == 0) { /* Group 0 form 3 is JC with explicit Q */\r |
| 689 | if (*cptr == ',') cptr++;\r |
| 690 | cptr = get_glyph(cptr, gbuf, 0);\r |
| 691 | sscanf(gbuf, "%x", &r);\r |
| 692 | if ((addr - (saveaddr+3)) > 255 || (addr - (saveaddr+3)) < 1)\r |
| 693 | return SCPE_ARG;\r |
| 694 | val[2] = addr - (saveaddr+3);\r |
| 695 | val[1] = r;\r |
| 696 | val[0] = 0xf0 | opcode[j].opmask;\r |
| 697 | oplen = 3;\r |
| 698 | \r |
| 699 | } else {\r |
| 700 | val[2] = (addr >> 8) & 0x00ff;\r |
| 701 | val[3] = addr & 0xff;\r |
| 702 | oplen = 4;\r |
| 703 | if (opcode[j].group == 1)\r |
| 704 | val[0] = 0xC0 | opcode[j].opmask;\r |
| 705 | else\r |
| 706 | val[0] = 0x30 | opcode[j].opmask;\r |
| 707 | } \r |
| 708 | break;\r |
| 709 | case 1: \r |
| 710 | val[2] = addr & 0xff;\r |
| 711 | oplen = 3;\r |
| 712 | if (opcode[j].group == 1)\r |
| 713 | val[0] = 0xD0 | opcode[j].opmask;\r |
| 714 | else\r |
| 715 | val[0] = 0x70 | opcode[j].opmask;\r |
| 716 | break;\r |
| 717 | case 2:\r |
| 718 | val[2] = addr & 0xff;\r |
| 719 | oplen = 3;\r |
| 720 | if (opcode[j].group == 1)\r |
| 721 | val[0] = 0xE0 | opcode[j].opmask;\r |
| 722 | else\r |
| 723 | val[0] = 0xB0 | opcode[j].opmask;\r |
| 724 | break;\r |
| 725 | default:\r |
| 726 | return SCPE_ARG;\r |
| 727 | break;\r |
| 728 | } \r |
| 729 | if (*cptr == ',') cptr++;\r |
| 730 | cptr = get_glyph(cptr, gbuf, 0);\r |
| 731 | sscanf(gbuf, "%x", &r);\r |
| 732 | if (r > 255) return SCPE_ARG;\r |
| 733 | val[1] = r;\r |
| 734 | break;\r |
| 735 | case 4:\r |
| 736 | if (*cptr == ',') cptr++;\r |
| 737 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 738 | sscanf(gbuf, "%d", &r);\r |
| 739 | if (r > 15) return SCPE_ARG;\r |
| 740 | val[1] = (r << 4) & 0xf0;\r |
| 741 | val[0] = 0xf0 | opcode[j].opmask;\r |
| 742 | if (*cptr == ',') cptr++;\r |
| 743 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 744 | sscanf(gbuf, "%d", &r);\r |
| 745 | if (r > 1) return SCPE_ARG;\r |
| 746 | val[1] |= (r << 3) & 0x08;\r |
| 747 | if (*cptr == ',') cptr++;\r |
| 748 | cptr = get_glyph(cptr, gbuf, 0);\r |
| 749 | sscanf(gbuf, "%d", &r);\r |
| 750 | if (r > 7) return SCPE_ARG;\r |
| 751 | val[1] |= r & 0x07;\r |
| 752 | val[2] = 0;\r |
| 753 | oplen = 3;\r |
| 754 | break;\r |
| 755 | case 5:\r |
| 756 | if (*cptr == ',') cptr++;\r |
| 757 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 758 | sscanf(gbuf, "%d", &r);\r |
| 759 | if (r > 15) return SCPE_ARG;\r |
| 760 | val[1] = (r << 4) & 0xf0;\r |
| 761 | val[0] = 0xf0 | opcode[j].opmask;\r |
| 762 | if (*cptr == ',') cptr++;\r |
| 763 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 764 | sscanf(gbuf, "%d", &r);\r |
| 765 | if (r > 1) return SCPE_ARG;\r |
| 766 | val[1] |= (r << 3) & 0x08;\r |
| 767 | if (*cptr == ',') cptr++;\r |
| 768 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 769 | sscanf(gbuf, "%d", &r);\r |
| 770 | if (r > 7) return SCPE_ARG;\r |
| 771 | val[1] |= r & 0x07;\r |
| 772 | if (*cptr == ',') cptr++;\r |
| 773 | cptr = get_glyph(cptr, gbuf, 0);\r |
| 774 | sscanf(gbuf, "%x", &r);\r |
| 775 | if (r > 255) return SCPE_ARG;\r |
| 776 | val[2] = r;\r |
| 777 | oplen = 3;\r |
| 778 | break;\r |
| 779 | case 6:\r |
| 780 | if (*cptr == ',') cptr++;\r |
| 781 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 782 | sscanf(gbuf, "%d", &r);\r |
| 783 | if (r > 15) return SCPE_ARG;\r |
| 784 | val[1] = (r << 4) & 0xf0;\r |
| 785 | if (*cptr == ',') cptr++;\r |
| 786 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 787 | sscanf(gbuf, "%d", &r);\r |
| 788 | if (r > 1) return SCPE_ARG;\r |
| 789 | val[1] |= (r << 3) & 0x08;\r |
| 790 | if (*cptr == ',') cptr++;\r |
| 791 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 792 | sscanf(gbuf, "%d", &r);\r |
| 793 | if (r > 7) return SCPE_ARG;\r |
| 794 | val[1] |= r & 0x07;\r |
| 795 | if (*cptr == ',') cptr++;\r |
| 796 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 797 | switch(addtyp) {\r |
| 798 | case 0: \r |
| 799 | val[2] = (addr >> 8) & 0x00ff;\r |
| 800 | val[3] = addr & 0xff;\r |
| 801 | oplen = 4;\r |
| 802 | if (opcode[j].group == 1)\r |
| 803 | val[0] = 0xC0 | opcode[j].opmask;\r |
| 804 | else\r |
| 805 | val[0] = 0x30 | opcode[j].opmask;\r |
| 806 | break;\r |
| 807 | case 1: \r |
| 808 | val[2] = addr & 0xff;\r |
| 809 | oplen = 3;\r |
| 810 | if (opcode[j].group == 1)\r |
| 811 | val[0] = 0xD0 | opcode[j].opmask;\r |
| 812 | else\r |
| 813 | val[0] = 0x70 | opcode[j].opmask;\r |
| 814 | break;\r |
| 815 | case 2:\r |
| 816 | val[2] = addr & 0xff;\r |
| 817 | oplen = 3;\r |
| 818 | if (opcode[j].group == 1)\r |
| 819 | val[0] = 0xE0 | opcode[j].opmask;\r |
| 820 | else\r |
| 821 | val[0] = 0xB0 | opcode[j].opmask;\r |
| 822 | break;\r |
| 823 | default:\r |
| 824 | return SCPE_ARG;\r |
| 825 | break;\r |
| 826 | } \r |
| 827 | break;\r |
| 828 | case 7:\r |
| 829 | if (*cptr == ',') cptr++;\r |
| 830 | cptr = get_glyph(cptr, gbuf, 0);\r |
| 831 | sscanf(gbuf, "%x", &r);\r |
| 832 | if ((r - (addr+3)) > 255 || (r - (addr+3)) < 1) return SCPE_ARG;\r |
| 833 | val[2] = r - (addr+3);\r |
| 834 | val[1] = opcode[j].q;\r |
| 835 | val[0] = 0xf0 | opcode[j].opmask;\r |
| 836 | oplen = 3;\r |
| 837 | break;\r |
| 838 | \r |
| 839 | case 8:\r |
| 840 | if (*cptr == ',') cptr++;\r |
| 841 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 842 | switch(addtyp) {\r |
| 843 | case 0: \r |
| 844 | val[2] = (addr >> 8) & 0x00ff;\r |
| 845 | val[3] = addr & 0xff;\r |
| 846 | oplen = 4;\r |
| 847 | val[0] = 0xC0 | opcode[j].opmask;\r |
| 848 | break;\r |
| 849 | case 1: \r |
| 850 | val[2] = addr & 0xff;\r |
| 851 | oplen = 3;\r |
| 852 | val[0] = 0xD0 | opcode[j].opmask;\r |
| 853 | break;\r |
| 854 | case 2:\r |
| 855 | val[2] = addr & 0xff;\r |
| 856 | oplen = 3;\r |
| 857 | val[0] = 0xE0 | opcode[j].opmask;\r |
| 858 | break;\r |
| 859 | default:\r |
| 860 | return SCPE_ARG;\r |
| 861 | break;\r |
| 862 | } \r |
| 863 | val[1] = opcode[j].q;\r |
| 864 | break;\r |
| 865 | case 9:\r |
| 866 | oplen = 2;\r |
| 867 | val[0] = 0;\r |
| 868 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 869 | switch(addtyp) {\r |
| 870 | case 0: \r |
| 871 | val[2] = (addr >> 8) & 0xff;\r |
| 872 | val[3] = addr & 0xff;\r |
| 873 | oplen += 2;\r |
| 874 | vptr = 4;\r |
| 875 | val[0] = 0x00 | opcode[j].opmask;\r |
| 876 | break;\r |
| 877 | case 1: \r |
| 878 | val[2] = addr & 0xff;\r |
| 879 | oplen += 1;\r |
| 880 | vptr = 3;\r |
| 881 | val[0] = 0x40 | opcode[j].opmask;\r |
| 882 | break;\r |
| 883 | case 2:\r |
| 884 | val[2] = addr & 0xff;\r |
| 885 | oplen += 1;\r |
| 886 | vptr = 3;\r |
| 887 | val[0] = 0x80 | opcode[j].opmask;\r |
| 888 | break;\r |
| 889 | default:\r |
| 890 | return SCPE_ARG;\r |
| 891 | break;\r |
| 892 | }\r |
| 893 | if (*cptr == ',') cptr++;\r |
| 894 | cptr = parse_addr(cptr, gbuf, &addr, &addtyp);\r |
| 895 | switch(addtyp) {\r |
| 896 | case 0: \r |
| 897 | val[vptr] = (addr >> 8) & 0xff;\r |
| 898 | val[vptr+1] = addr & 0xff;\r |
| 899 | oplen += 2;\r |
| 900 | break;\r |
| 901 | case 1: \r |
| 902 | val[vptr] = addr & 0xff;\r |
| 903 | oplen += 1;\r |
| 904 | val[0] = 0x10 | val[0];\r |
| 905 | break;\r |
| 906 | case 2:\r |
| 907 | val[vptr] = addr & 0xff;\r |
| 908 | oplen += 1;\r |
| 909 | val[0] = 0x20 | val[0];\r |
| 910 | break;\r |
| 911 | default:\r |
| 912 | return SCPE_ARG;\r |
| 913 | break;\r |
| 914 | } \r |
| 915 | val[1] = opcode[j].q;\r |
| 916 | break;\r |
| 917 | default:\r |
| 918 | break;\r |
| 919 | }\r |
| 920 | \r |
| 921 | \r |
| 922 | return (-(oplen-1));\r |
| 923 | }\r |
| 924 | \r |
| 925 | char *parse_addr(char *cptr, char *gbuf, int32 *addr, int32 *addrtype)\r |
| 926 | {\r |
| 927 | int32 nybble = 0;\r |
| 928 | char temp[32];\r |
| 929 | \r |
| 930 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 931 | if (gbuf[0] == '(') { /* XR relative */\r |
| 932 | strcpy(temp, gbuf+1);\r |
| 933 | sscanf(temp, "%x", addr);\r |
| 934 | if (*cptr == ',') cptr++;\r |
| 935 | cptr = get_glyph(cptr, gbuf, ',');\r |
| 936 | nybble = -1;\r |
| 937 | if (strcmp(gbuf, "XR1)") == 0)\r |
| 938 | nybble = 1;\r |
| 939 | if (strcmp(gbuf, "XR2)") == 0)\r |
| 940 | nybble = 2;\r |
| 941 | } else { /* Direct */\r |
| 942 | sscanf(gbuf, "%x", addr);\r |
| 943 | nybble = 0; \r |
| 944 | }\r |
| 945 | *addrtype = nybble;\r |
| 946 | return cptr;\r |
| 947 | }\r |
| 948 | \r |