| 1 | /* id16_sys.c: Interdata 16b simulator interface\r |
| 2 | \r |
| 3 | Copyright (c) 2000-2008, Robert M. Supnik\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 Robert M Supnik 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 Robert M Supnik.\r |
| 25 | \r |
| 26 | 04-Feb-08 RMS Modified to allow -A, -B use with 8b devices\r |
| 27 | 18-Oct-06 RMS Re-ordered device list\r |
| 28 | 26-Mar-04 RMS Fixed warning with -std=c99\r |
| 29 | 27-Feb-03 RMS Added relative addressing support\r |
| 30 | */\r |
| 31 | \r |
| 32 | #include "id_defs.h"\r |
| 33 | #include <ctype.h>\r |
| 34 | \r |
| 35 | #define MSK_SBF 0x0100\r |
| 36 | \r |
| 37 | extern DEVICE cpu_dev;\r |
| 38 | extern DEVICE sch_dev;\r |
| 39 | extern DEVICE pt_dev;\r |
| 40 | extern DEVICE tt_dev, ttp_dev;\r |
| 41 | extern DEVICE pas_dev, pasl_dev;\r |
| 42 | extern DEVICE lpt_dev;\r |
| 43 | extern DEVICE pic_dev, lfc_dev;\r |
| 44 | extern DEVICE dp_dev, idc_dev;\r |
| 45 | extern DEVICE fd_dev, mt_dev;\r |
| 46 | extern UNIT cpu_unit;\r |
| 47 | extern REG cpu_reg[];\r |
| 48 | extern uint16 *M;\r |
| 49 | \r |
| 50 | t_stat fprint_sym_m (FILE *of, t_addr addr, t_value *val);\r |
| 51 | t_stat parse_sym_m (char *cptr, t_addr addr, t_value *val);\r |
| 52 | extern t_stat lp_load (FILE *fileref, char *cptr, char *fnam);\r |
| 53 | extern t_stat pt_dump (FILE *of, char *cptr, char *fnam);\r |
| 54 | \r |
| 55 | /* SCP data structures and interface routines\r |
| 56 | \r |
| 57 | sim_name simulator name string\r |
| 58 | sim_PC pointer to saved PC register descriptor\r |
| 59 | sim_emax number of words for examine\r |
| 60 | sim_devices array of pointers to simulated devices\r |
| 61 | sim_stop_messages array of pointers to stop messages\r |
| 62 | sim_load binary loader\r |
| 63 | */\r |
| 64 | \r |
| 65 | char sim_name[] = "Interdata 16b";\r |
| 66 | \r |
| 67 | REG *sim_PC = &cpu_reg[0];\r |
| 68 | \r |
| 69 | int32 sim_emax = 2;\r |
| 70 | \r |
| 71 | DEVICE *sim_devices[] = {\r |
| 72 | &cpu_dev,\r |
| 73 | &sch_dev,\r |
| 74 | &pic_dev,\r |
| 75 | &lfc_dev,\r |
| 76 | &pt_dev,\r |
| 77 | &tt_dev,\r |
| 78 | &ttp_dev,\r |
| 79 | &pas_dev,\r |
| 80 | &pasl_dev,\r |
| 81 | &lpt_dev,\r |
| 82 | &dp_dev,\r |
| 83 | &idc_dev,\r |
| 84 | &fd_dev,\r |
| 85 | &mt_dev,\r |
| 86 | NULL\r |
| 87 | };\r |
| 88 | \r |
| 89 | const char *sim_stop_messages[] = {\r |
| 90 | "Unknown error",\r |
| 91 | "Reserved instruction",\r |
| 92 | "HALT instruction",\r |
| 93 | "Breakpoint",\r |
| 94 | "Wait state",\r |
| 95 | "Runaway VFU"\r |
| 96 | };\r |
| 97 | \r |
| 98 | /* Binary loader -- load carriage control tape\r |
| 99 | Binary dump -- paper tape dump */\r |
| 100 | \r |
| 101 | t_stat sim_load (FILE *fileref, char *cptr, char *fnam, int flag)\r |
| 102 | {\r |
| 103 | if (flag) return pt_dump (fileref, cptr, fnam);\r |
| 104 | return lp_load (fileref, cptr, fnam);\r |
| 105 | }\r |
| 106 | \r |
| 107 | /* Symbol tables */\r |
| 108 | \r |
| 109 | #define I_V_FL 16 /* class bits */\r |
| 110 | #define I_M_FL 0xF /* class mask */\r |
| 111 | #define I_V_MR 0x0 /* mask-register */\r |
| 112 | #define I_V_RR 0x1 /* register-register */\r |
| 113 | #define I_V_R 0x2 /* register */\r |
| 114 | #define I_V_MX 0x3 /* mask-memory */\r |
| 115 | #define I_V_RX 0x4 /* register-memory */\r |
| 116 | #define I_V_X 0x5 /* memory */\r |
| 117 | #define I_V_FF 0x6 /* float reg-reg */\r |
| 118 | #define I_V_FX 0x7 /* float reg-mem */\r |
| 119 | #define I_V_SI 0x8 /* short immed */\r |
| 120 | #define I_V_SB 0x9 /* short branch */\r |
| 121 | #define I_V_SX 0xA /* short ext branch */\r |
| 122 | #define I_MR (I_V_MR << I_V_FL)\r |
| 123 | #define I_RR (I_V_RR << I_V_FL)\r |
| 124 | #define I_R (I_V_R << I_V_FL)\r |
| 125 | #define I_MX (I_V_MX << I_V_FL)\r |
| 126 | #define I_RX (I_V_RX << I_V_FL)\r |
| 127 | #define I_X (I_V_X << I_V_FL)\r |
| 128 | #define I_FF (I_V_FF << I_V_FL)\r |
| 129 | #define I_FX (I_V_FX << I_V_FL)\r |
| 130 | #define I_SI (I_V_SI << I_V_FL)\r |
| 131 | #define I_SB (I_V_SB << I_V_FL)\r |
| 132 | #define I_SX (I_V_SX << I_V_FL)\r |
| 133 | \r |
| 134 | #define R_X 0 /* no reg */\r |
| 135 | #define R_M 1 /* reg mask */\r |
| 136 | #define R_R 2 /* reg int reg */\r |
| 137 | #define R_F 3 /* reg flt reg */\r |
| 138 | \r |
| 139 | static const int32 masks[] = {\r |
| 140 | 0xFF00, 0xFF00, 0xFFF0, 0xFF00,\r |
| 141 | 0xFF00, 0xFFF0, 0xFF00, 0xFF00,\r |
| 142 | 0xFF00, 0xFE00, 0xFEF0\r |
| 143 | };\r |
| 144 | \r |
| 145 | static const uint32 r1_type[] = {\r |
| 146 | R_M, R_R, R_X, R_M,\r |
| 147 | R_R, R_X, R_F, R_F,\r |
| 148 | R_R, R_M, R_X\r |
| 149 | };\r |
| 150 | \r |
| 151 | static const uint32 r2_type[] = {\r |
| 152 | R_X, R_R, R_R, R_X,\r |
| 153 | R_X, R_X, R_F, R_X,\r |
| 154 | R_M, R_X, R_X\r |
| 155 | };\r |
| 156 | \r |
| 157 | static const char *opcode[] = {\r |
| 158 | "BER", "BNER","BZR", "BNZR",\r |
| 159 | "BPR", "BNPR","BLR", "BNLR",\r |
| 160 | "BMR", "BNMR","BOR", "BNOR",\r |
| 161 | "BCR", "BNCR","BR",\r |
| 162 | "BES", "BNES","BZS", "BNZS",\r |
| 163 | "BPS", "BNPS","BLS", "BNLS",\r |
| 164 | "BMS", "BNMS","BOS", "BNOS",\r |
| 165 | "BCS", "BNCS","BS",\r |
| 166 | "BE", "BNE", "BZ", "BNZ",\r |
| 167 | "BP", "BNP", "BL", "BNL",\r |
| 168 | "BM", "BNM", "BO", "BNO",\r |
| 169 | "BC", "BNC", "B",\r |
| 170 | "BALR","BTCR","BFCR",\r |
| 171 | "NHR", "CLHR","OHR", "XHR",\r |
| 172 | "LHR", "CHR", "AHR", "SHR",\r |
| 173 | "MHR", "DHR", "ACHR","SCHR",\r |
| 174 | "SETMR",\r |
| 175 | "BTBS","BTFS","BFBS","BFFS",\r |
| 176 | "LIS", "LCS", "AIS", "SIS",\r |
| 177 | "LER", "CER", "AER", "SER",\r |
| 178 | "MER", "DER", "FXR", "FLR",\r |
| 179 | "LPSR",\r |
| 180 | "LDR", "CDR", "ADR", "SDR",\r |
| 181 | "MDR", "DDR", "FXDR","FLDR",\r |
| 182 | "STH", "BAL", "BTC", "BFC",\r |
| 183 | "NH", "CLH", "OH", "XH",\r |
| 184 | "LH", "CH", "AH", "SH",\r |
| 185 | "MH", "DH", "ACH", "SCH",\r |
| 186 | "SETM",\r |
| 187 | "STE", "AHM",\r |
| 188 | "ATL", "ABL", "RTL", "RBL",\r |
| 189 | "LE", "CE", "AE", "SE",\r |
| 190 | "ME", "DE",\r |
| 191 | "STD", "STME","LME", "LPS",\r |
| 192 | "LD", "CD", "AD", "SD",\r |
| 193 | "MD", "DD", "STMD","LMD",\r |
| 194 | "SRLS","SLLS","STBR","LBR",\r |
| 195 | "EXBR","EPSR","WBR", "RBR",\r |
| 196 | "WHR", "RHR", "WDR", "RDR",\r |
| 197 | "MHUR","SSR", "OCR", "AIR",\r |
| 198 | "BXH", "BXLE","LPSW","THI",\r |
| 199 | "NHI", "CLHI","OHI", "XHI",\r |
| 200 | "LHI", "CHI", "AHI", "SHI",\r |
| 201 | "SRHL","SLHL","SRHA","SLHA",\r |
| 202 | "STM", "LM", "STB", "LB",\r |
| 203 | "CLB", "AL", "WB", "RB",\r |
| 204 | "WH", "RH", "WD", "RD",\r |
| 205 | "MHU", "SS", "OC", "AI",\r |
| 206 | "SVC", "SINT",\r |
| 207 | "RRL", "RLL",\r |
| 208 | "SRL", "SLL", "SRA", "SLA",\r |
| 209 | NULL\r |
| 210 | };\r |
| 211 | \r |
| 212 | static const uint32 opc_val[] = {\r |
| 213 | 0x0330+I_R, 0x0230+I_R, 0x0330+I_R, 0x0230+I_R,\r |
| 214 | 0x0220+I_R, 0x0320+I_R, 0x0280+I_R, 0x0380+I_R,\r |
| 215 | 0x0210+I_R, 0x0310+I_R, 0x0240+I_R, 0x0340+I_R,\r |
| 216 | 0x0280+I_R, 0x0380+I_R, 0x0300+I_R,\r |
| 217 | 0x2230+I_SX, 0x2030+I_SX, 0x2230+I_SX, 0x2030+I_SX,\r |
| 218 | 0x2020+I_SX, 0x2220+I_SX, 0x2080+I_SX, 0x2280+I_SX,\r |
| 219 | 0x2010+I_SX, 0x2210+I_SX, 0x2040+I_SX, 0x2240+I_SX,\r |
| 220 | 0x2080+I_SX, 0x2280+I_SX, 0x2200+I_SX,\r |
| 221 | 0x4330+I_X, 0x4230+I_X, 0x4330+I_X, 0x4230+I_X,\r |
| 222 | 0x4220+I_X, 0x4320+I_X, 0x4280+I_X, 0x4380+I_X,\r |
| 223 | 0x4210+I_X, 0x4310+I_X, 0x4240+I_X, 0x4340+I_X,\r |
| 224 | 0x4280+I_X, 0x4380+I_X, 0x4300+I_X,\r |
| 225 | 0x0100+I_RR, 0x0200+I_MR, 0x0300+I_MR,\r |
| 226 | 0x0400+I_RR, 0x0500+I_RR, 0x0600+I_RR, 0x0700+I_RR,\r |
| 227 | 0x0800+I_RR, 0x0900+I_RR, 0x0A00+I_RR, 0x0B00+I_RR,\r |
| 228 | 0x0C00+I_RR, 0x0D00+I_RR, 0x0E00+I_RR, 0x0F00+I_RR,\r |
| 229 | 0x1300+I_RR,\r |
| 230 | 0x2000+I_SB, 0x2100+I_SB, 0x2200+I_SB, 0x2300+I_SB,\r |
| 231 | 0x2400+I_SI, 0x2500+I_SI, 0x2600+I_SI, 0x2700+I_SI,\r |
| 232 | 0x2800+I_FF, 0x2900+I_FF, 0x2A00+I_FF, 0x2B00+I_FF,\r |
| 233 | 0x2C00+I_FF, 0x2D00+I_FF, 0x2E00+I_RR, 0x2F00+I_RR,\r |
| 234 | 0x3300+I_R,\r |
| 235 | 0x3800+I_FF, 0x3900+I_FF, 0x3A00+I_FF, 0x3B00+I_FF,\r |
| 236 | 0x3C00+I_FF, 0x3D00+I_FF, 0x3E00+I_RR, 0x3F00+I_RR,\r |
| 237 | 0x4000+I_RX, 0x4100+I_RX, 0x4200+I_MX, 0x4300+I_MX,\r |
| 238 | 0x4400+I_RX, 0x4500+I_RX, 0x4600+I_RX, 0x4700+I_RX,\r |
| 239 | 0x4800+I_RX, 0x4900+I_RX, 0x4A00+I_RX, 0x4B00+I_RX,\r |
| 240 | 0x4C00+I_RX, 0x4D00+I_RX, 0x4E00+I_RX, 0x4F00+I_RX,\r |
| 241 | 0x5300+I_RX,\r |
| 242 | 0x6000+I_RX, 0x6100+I_RX,\r |
| 243 | 0x6400+I_RX, 0x6500+I_RX, 0x6600+I_RX, 0x6700+I_RX,\r |
| 244 | 0x6800+I_FX, 0x6900+I_FX, 0x6A00+I_FX, 0x6B00+I_FX,\r |
| 245 | 0x6C00+I_FX, 0x6D00+I_FX,\r |
| 246 | 0x7000+I_FX, 0x7100+I_FX, 0x7200+I_FX, 0x7300+I_X,\r |
| 247 | 0x7800+I_FX, 0x7900+I_FX, 0x7A00+I_FX, 0x7B00+I_FX,\r |
| 248 | 0x7C00+I_FX, 0x7D00+I_FX, 0x7E00+I_FX, 0x7F00+I_FX,\r |
| 249 | 0x9000+I_SI, 0x9100+I_SI, 0x9200+I_RR, 0x9300+I_RR,\r |
| 250 | 0x9400+I_RR, 0x9500+I_RR, 0x9600+I_RR, 0x9700+I_RR,\r |
| 251 | 0x9800+I_RR, 0x9900+I_RR, 0x9A00+I_RR, 0x9B00+I_RR,\r |
| 252 | 0x9C00+I_RR, 0x9D00+I_RR, 0x9E00+I_RR, 0x9F00+I_RR,\r |
| 253 | 0xC000+I_RX, 0xC100+I_RX, 0xC200+I_X, 0xC300+I_RX,\r |
| 254 | 0xC400+I_RX, 0xC500+I_RX, 0xC600+I_RX, 0xC700+I_RX,\r |
| 255 | 0xC800+I_RX, 0xC900+I_RX, 0xCA00+I_RX, 0xCB00+I_RX,\r |
| 256 | 0xCC00+I_RX, 0xCD00+I_RX, 0xCE00+I_RX, 0xCF00+I_RX,\r |
| 257 | 0xD000+I_RX, 0xD100+I_RX, 0xD200+I_RX, 0xD300+I_RX,\r |
| 258 | 0xD400+I_RX, 0xD500+I_X, 0xD600+I_RX, 0xD700+I_RX,\r |
| 259 | 0xD800+I_RX, 0xD900+I_RX, 0xDA00+I_RX, 0xDB00+I_RX,\r |
| 260 | 0xDC00+I_RX, 0xDD00+I_RX, 0xDE00+I_RX, 0xDF00+I_RX,\r |
| 261 | 0xE100+I_RX, 0xE200+I_RX,\r |
| 262 | 0xEA00+I_RX, 0xEB00+I_RX,\r |
| 263 | 0xEC00+I_RX, 0xED00+I_RX, 0xEE00+I_RX, 0xEF00+I_RX,\r |
| 264 | 0xFFFF\r |
| 265 | };\r |
| 266 | \r |
| 267 | /* Symbolic decode\r |
| 268 | \r |
| 269 | Inputs:\r |
| 270 | *of = output stream\r |
| 271 | addr = current PC\r |
| 272 | *val = values to decode\r |
| 273 | *uptr = pointer to unit\r |
| 274 | sw = switches\r |
| 275 | Outputs:\r |
| 276 | return = if >= 0, error code\r |
| 277 | if < 0, number of extra bytes retired\r |
| 278 | */\r |
| 279 | \r |
| 280 | t_stat fprint_sym (FILE *of, t_addr addr, t_value *val,\r |
| 281 | UNIT *uptr, int32 sw)\r |
| 282 | {\r |
| 283 | int32 bflag, c1, c2, rdx;\r |
| 284 | t_stat r;\r |
| 285 | DEVICE *dptr;\r |
| 286 | \r |
| 287 | if (uptr == NULL) uptr = &cpu_unit; /* anon = CPU */\r |
| 288 | dptr = find_dev_from_unit (uptr); /* find dev */\r |
| 289 | if (dptr == NULL) return SCPE_IERR;\r |
| 290 | if (dptr->dwidth < 16) bflag = 1; /* 8b dev? */\r |
| 291 | else bflag = 0; /* assume 16b */\r |
| 292 | if (sw & SWMASK ('D')) rdx = 10; /* get radix */\r |
| 293 | else if (sw & SWMASK ('O')) rdx = 8;\r |
| 294 | else if (sw & SWMASK ('H')) rdx = 16;\r |
| 295 | else rdx = dptr->dradix;\r |
| 296 | \r |
| 297 | if (sw & SWMASK ('A')) { /* ASCII char? */\r |
| 298 | if (bflag) c1 = val[0] & 0x7F;\r |
| 299 | else c1 = (val[0] >> ((addr & 1)? 0: 8)) & 0x7F; /* get byte */\r |
| 300 | fprintf (of, (c1 < 0x20)? "<%02X>": "%c", c1);\r |
| 301 | return 0;\r |
| 302 | }\r |
| 303 | if (sw & SWMASK ('B')) { /* byte? */\r |
| 304 | if (bflag) c1 = val[0] & 0xFF;\r |
| 305 | else c1 = (val[0] >> ((addr & 1)? 0: 8)) & 0xFF; /* get byte */\r |
| 306 | fprint_val (of, c1, rdx, 8, PV_RZRO);\r |
| 307 | return 0;\r |
| 308 | }\r |
| 309 | if (bflag) return SCPE_ARG; /* 16b only */\r |
| 310 | \r |
| 311 | if (sw & SWMASK ('C')) { /* string? */\r |
| 312 | c1 = (val[0] >> 8) & 0x7F;\r |
| 313 | c2 = val[0] & 0x7F;\r |
| 314 | fprintf (of, (c1 < 0x20)? "<%02X>": "%c", c1);\r |
| 315 | fprintf (of, (c2 < 0x20)? "<%02X>": "%c", c2);\r |
| 316 | return -1;\r |
| 317 | }\r |
| 318 | if (sw & SWMASK ('F')) { /* fullword? */\r |
| 319 | fprint_val (of, (val[0] << 16) | val[1], rdx, 32, PV_RZRO);\r |
| 320 | return -3;\r |
| 321 | }\r |
| 322 | if (sw & SWMASK ('M')) { /* inst format? */\r |
| 323 | r = fprint_sym_m (of, addr, val); /* decode inst */\r |
| 324 | if (r <= 0) return r;\r |
| 325 | }\r |
| 326 | \r |
| 327 | fprint_val (of, val[0], rdx, 16, PV_RZRO);\r |
| 328 | return -1;\r |
| 329 | }\r |
| 330 | \r |
| 331 | /* Symbolic decode for -m\r |
| 332 | \r |
| 333 | Inputs:\r |
| 334 | of = output stream\r |
| 335 | addr = current PC\r |
| 336 | *val = values to decode\r |
| 337 | Outputs:\r |
| 338 | return = if >= 0, error code\r |
| 339 | if < 0, number of extra bytes retired\r |
| 340 | */\r |
| 341 | \r |
| 342 | t_stat fprint_sym_m (FILE *of, t_addr addr, t_value *val)\r |
| 343 | {\r |
| 344 | uint32 i, j, inst, r1, r2, ea, vp;\r |
| 345 | \r |
| 346 | vp = 0;\r |
| 347 | inst = val[0]; /* first 16b */\r |
| 348 | ea = val[1]; /* second 16b */\r |
| 349 | for (i = 0; opcode[i] != NULL; i++) { /* loop thru ops */\r |
| 350 | j = (opc_val[i] >> I_V_FL) & I_M_FL; /* get class */\r |
| 351 | if ((opc_val[i] & 0xFFFF) == (inst & masks[j])) { /* match? */\r |
| 352 | r1 = (inst >> 4) & 0xF;\r |
| 353 | r2 = inst & 0xF;\r |
| 354 | fprintf (of, "%s ", opcode[i]); /* print opcode */\r |
| 355 | switch (j) { /* case on class */\r |
| 356 | \r |
| 357 | case I_V_MR: /* mask-register */\r |
| 358 | fprintf (of, "%-X,R%d", r1, r2);\r |
| 359 | return -1;\r |
| 360 | \r |
| 361 | case I_V_RR: /* register-register */\r |
| 362 | case I_V_FF: /* floating-floating */\r |
| 363 | fprintf (of, "R%d,R%d", r1, r2);\r |
| 364 | return -1;\r |
| 365 | \r |
| 366 | case I_V_SI: /* short immediate */\r |
| 367 | fprintf (of, "R%d,%-X", r1, r2);\r |
| 368 | return -1;\r |
| 369 | \r |
| 370 | case I_V_SB: /* short branch */\r |
| 371 | fprintf (of, "%-X,", r1);\r |
| 372 | case I_V_SX: /* ext short branch */\r |
| 373 | fprintf (of, "%-X", ((inst & MSK_SBF)?\r |
| 374 | (addr + r2 + r2): (addr - r2 - r2)));\r |
| 375 | return -1;\r |
| 376 | \r |
| 377 | case I_V_R: /* register */\r |
| 378 | fprintf (of, "R%d", r2);\r |
| 379 | return -1;\r |
| 380 | \r |
| 381 | case I_V_MX: /* mask-memory */\r |
| 382 | fprintf (of, "%-X,%-X", r1, ea);\r |
| 383 | break;\r |
| 384 | \r |
| 385 | case I_V_RX: /* register-memory */\r |
| 386 | case I_V_FX: /* floating-memory */\r |
| 387 | fprintf (of, "R%d,%-X", r1, ea);\r |
| 388 | break;\r |
| 389 | \r |
| 390 | case I_V_X: /* memory */\r |
| 391 | fprintf (of, "%-X", ea);\r |
| 392 | break;\r |
| 393 | } /* end case */\r |
| 394 | \r |
| 395 | if (r2) fprintf (of, "(R%d)", r2); \r |
| 396 | return -3;\r |
| 397 | } /* end if */\r |
| 398 | } /* end for */\r |
| 399 | return SCPE_ARG; /* no match */\r |
| 400 | }\r |
| 401 | \r |
| 402 | /* Register number\r |
| 403 | \r |
| 404 | Inputs:\r |
| 405 | *cptr = pointer to input string\r |
| 406 | **optr = pointer to pointer to next char\r |
| 407 | rtype = mask, integer, or float\r |
| 408 | Outputs:\r |
| 409 | rnum = output register number, -1 if error\r |
| 410 | */\r |
| 411 | \r |
| 412 | int32 get_reg (char *cptr, char **optr, int32 rtype)\r |
| 413 | {\r |
| 414 | int32 reg;\r |
| 415 | \r |
| 416 | if ((*cptr == 'R') || (*cptr == 'r')) { /* R? */\r |
| 417 | cptr++; /* skip */\r |
| 418 | if (rtype == R_M) return -1; /* cant be mask */\r |
| 419 | }\r |
| 420 | if ((*cptr >= '0') && (*cptr <= '9')) {\r |
| 421 | reg = *cptr++ - '0';\r |
| 422 | if ((*cptr >= '0') && (*cptr <= '9'))\r |
| 423 | reg = (reg * 10) + (*cptr - '0'); \r |
| 424 | else --cptr;\r |
| 425 | if (reg > 0xF) return -1;\r |
| 426 | }\r |
| 427 | else if ((*cptr >= 'a') && (*cptr <= 'f')) reg = (*cptr - 'a') + 10;\r |
| 428 | else if ((*cptr >= 'A') && (*cptr <= 'F')) reg = (*cptr - 'A') + 10;\r |
| 429 | else return -1;\r |
| 430 | if ((rtype == R_F) && (reg & 1)) return -1;\r |
| 431 | *optr = cptr + 1;\r |
| 432 | return reg;\r |
| 433 | }\r |
| 434 | \r |
| 435 | /* Address\r |
| 436 | \r |
| 437 | Inputs:\r |
| 438 | *cptr = pointer to input string\r |
| 439 | **tptr = pointer to moved pointer\r |
| 440 | *ea = effective address\r |
| 441 | addr = base address\r |
| 442 | Outputs:\r |
| 443 | status = SCPE_OK if ok, else error code\r |
| 444 | */\r |
| 445 | \r |
| 446 | t_stat get_addr (char *cptr, char **tptr, t_addr *ea, t_addr addr)\r |
| 447 | {\r |
| 448 | int32 sign = 1;\r |
| 449 | \r |
| 450 | if (*cptr == '.') { /* relative? */\r |
| 451 | cptr++;\r |
| 452 | *ea = addr;\r |
| 453 | if (*cptr == '+') cptr++; /* .+? */\r |
| 454 | else if (*cptr == '-') { /* .-? */\r |
| 455 | sign = -1;\r |
| 456 | cptr++;\r |
| 457 | }\r |
| 458 | else return SCPE_OK;\r |
| 459 | }\r |
| 460 | else *ea = 0;\r |
| 461 | errno = 0;\r |
| 462 | *ea = *ea + (sign * ((int32) strtoul (cptr, tptr, 16)));\r |
| 463 | if (errno || (cptr == *tptr)) return SCPE_ARG;\r |
| 464 | return SCPE_OK;\r |
| 465 | }\r |
| 466 | \r |
| 467 | /* Symbolic input */\r |
| 468 | \r |
| 469 | t_stat parse_sym (char *cptr, t_addr addr, UNIT *uptr, t_value *val, int32 sw)\r |
| 470 | {\r |
| 471 | int32 bflag, by, rdx, num;\r |
| 472 | t_stat r;\r |
| 473 | DEVICE *dptr;\r |
| 474 | \r |
| 475 | if (uptr == NULL) uptr = &cpu_unit; /* anon = CPU */\r |
| 476 | dptr = find_dev_from_unit (uptr); /* find dev */\r |
| 477 | if (dptr == NULL) return SCPE_IERR;\r |
| 478 | if (dptr->dwidth < 16) bflag = 1; /* 8b device? */\r |
| 479 | else bflag = 0; /* assume 16b */\r |
| 480 | if (sw & SWMASK ('D')) rdx = 10; /* get radix */\r |
| 481 | else if (sw & SWMASK ('O')) rdx = 8;\r |
| 482 | else if (sw & SWMASK ('H')) rdx = 16;\r |
| 483 | else rdx = dptr->dradix;\r |
| 484 | \r |
| 485 | if ((sw & SWMASK ('A')) || ((*cptr == '\'') && cptr++)) { /* ASCII char? */\r |
| 486 | if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */\r |
| 487 | if (bflag) val[0] = (t_value) cptr[0];\r |
| 488 | else val[0] = (addr & 1)?\r |
| 489 | (val[0] & ~0xFF) | ((t_value) cptr[0]):\r |
| 490 | (val[0] & 0xFF) | (((t_value) cptr[0]) << 8);\r |
| 491 | return 0;\r |
| 492 | }\r |
| 493 | if (sw & SWMASK ('B')) { /* byte? */\r |
| 494 | by = get_uint (cptr, rdx, DMASK8, &r); /* get byte */\r |
| 495 | if (r != SCPE_OK) return SCPE_ARG;\r |
| 496 | if (bflag) val[0] = by;\r |
| 497 | else val[0] = (addr & 1)?\r |
| 498 | (val[0] & ~0xFF) | by:\r |
| 499 | (val[0] & 0xFF) | (by << 8);\r |
| 500 | return 0;\r |
| 501 | }\r |
| 502 | if (bflag) return SCPE_ARG; /* 16b only */\r |
| 503 | \r |
| 504 | if ((sw & SWMASK ('C')) || ((*cptr == '"') && cptr++)) { /* ASCII chars? */\r |
| 505 | if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */\r |
| 506 | val[0] = ((t_value) cptr[0] << 8) | (t_value) cptr[1];\r |
| 507 | return -1;\r |
| 508 | }\r |
| 509 | if (sw & SWMASK ('F')) {\r |
| 510 | num = (int32) get_uint (cptr, rdx, DMASK32, &r); /* get number */\r |
| 511 | if (r != SCPE_OK) return r;\r |
| 512 | val[0] = (num >> 16) & DMASK16;\r |
| 513 | val[1] = num & DMASK16;\r |
| 514 | return -3;\r |
| 515 | }\r |
| 516 | \r |
| 517 | r = parse_sym_m (cptr, addr, val); /* try to parse inst */\r |
| 518 | if (r <= 0) return r;\r |
| 519 | val[0] = (int32) get_uint (cptr, rdx, DMASK16, &r); /* get number */\r |
| 520 | if (r != SCPE_OK) return r;\r |
| 521 | return -1;\r |
| 522 | }\r |
| 523 | \r |
| 524 | /* Symbolic input for -m\r |
| 525 | \r |
| 526 | Inputs:\r |
| 527 | *cptr = pointer to input string\r |
| 528 | addr = current PC\r |
| 529 | *val = pointer to output values\r |
| 530 | cf = true if parsing for CPU\r |
| 531 | Outputs:\r |
| 532 | status = > 0 error code\r |
| 533 | <= 0 -number of extra words\r |
| 534 | */\r |
| 535 | \r |
| 536 | t_stat parse_sym_m (char *cptr, t_addr addr, t_value *val)\r |
| 537 | {\r |
| 538 | uint32 i, j, t, df, db, inst;\r |
| 539 | int32 st, r1, r2;\r |
| 540 | t_stat r;\r |
| 541 | char *tptr, gbuf[CBUFSIZE];\r |
| 542 | \r |
| 543 | cptr = get_glyph (cptr, gbuf, 0); /* get opcode */\r |
| 544 | for (i = 0; (opcode[i] != NULL) && (strcmp (opcode[i], gbuf) != 0) ; i++) ;\r |
| 545 | if (opcode[i] == NULL) return SCPE_ARG;\r |
| 546 | inst = opc_val[i] & 0xFFFF; /* get value */\r |
| 547 | j = (opc_val[i] >> I_V_FL) & I_M_FL; /* get class */\r |
| 548 | if (r1_type[j]) { /* any R1 field? */\r |
| 549 | cptr = get_glyph (cptr, gbuf, ','); /* get R1 field */\r |
| 550 | if ((r1 = get_reg (gbuf, &tptr, r1_type[j])) < 0)\r |
| 551 | return SCPE_ARG;\r |
| 552 | if (*tptr != 0) return SCPE_ARG; /* all done? */\r |
| 553 | inst = inst | (r1 << 4); /* or in R1 */\r |
| 554 | }\r |
| 555 | \r |
| 556 | cptr = get_glyph (cptr, gbuf, 0); /* get operand */\r |
| 557 | if (*cptr) return SCPE_ARG; /* should be end */\r |
| 558 | switch (j) { /* case on class */\r |
| 559 | \r |
| 560 | case I_V_FF: case I_V_SI: /* flt-flt, sh imm */\r |
| 561 | case I_V_MR: case I_V_RR: /* mask/reg-reg */\r |
| 562 | case I_V_R: /* register */\r |
| 563 | if ((r2 = get_reg (gbuf, &tptr, r2_type[j])) < 0)\r |
| 564 | return SCPE_ARG;\r |
| 565 | if (*tptr != 0) return SCPE_ARG; /* all done? */\r |
| 566 | inst = inst | r2; /* or in R2 */\r |
| 567 | break;\r |
| 568 | \r |
| 569 | case I_V_FX: /* float-memory */\r |
| 570 | case I_V_MX: case I_V_RX: /* mask/reg-mem */\r |
| 571 | case I_V_X: /* memory */\r |
| 572 | r = get_addr (gbuf, &tptr, &t, addr); /* get addr */\r |
| 573 | if ((r != SCPE_OK) || (t > PAMASK16)) return SCPE_ARG;\r |
| 574 | if (*tptr == '(') { /* index? */\r |
| 575 | if ((r2 = get_reg (tptr + 1, &tptr, R_R)) < 0)\r |
| 576 | return SCPE_ARG;\r |
| 577 | if (*tptr++ != ')') return SCPE_ARG;\r |
| 578 | inst = inst | r2; /* or in R2 */\r |
| 579 | }\r |
| 580 | if (*tptr != 0) return SCPE_ARG;\r |
| 581 | val[0] = inst;\r |
| 582 | val[1] = t;\r |
| 583 | return -3;\r |
| 584 | \r |
| 585 | case I_V_SB: case I_V_SX: /* short branches */\r |
| 586 | r = get_addr (gbuf, &tptr, &t, addr); /* get addr */\r |
| 587 | if ((r != SCPE_OK) || (t & 1) || *tptr) /* error if odd */\r |
| 588 | return SCPE_ARG;\r |
| 589 | st = t; /* signed version */\r |
| 590 | db = (addr - t) & 0x1F; /* back displ */\r |
| 591 | df = (t - addr) & 0x1F; /* fwd displ */\r |
| 592 | if ((t == ((addr - db) & VAMASK16)) && /* back work and */\r |
| 593 | ((j == I_V_SX) || !(inst & MSK_SBF))) /* ext or back br? */\r |
| 594 | inst = inst | (db >> 1); /* or in back displ */\r |
| 595 | else if ((t == ((addr + df) & VAMASK16)) && /* fwd work and */\r |
| 596 | ((j == I_V_SX) || (inst & MSK_SBF))) /* ext or fwd br? */\r |
| 597 | inst = inst | (df >> 1) | MSK_SBF; /* or in fwd displ */\r |
| 598 | else return SCPE_ARG;\r |
| 599 | break;\r |
| 600 | } /* end case */\r |
| 601 | \r |
| 602 | val[0] = inst;\r |
| 603 | return -1;\r |
| 604 | }\r |