| 1 | /* Sequent Symmetry host interface, for GDB when running under Unix. |
| 2 | Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* FIXME, some 387-specific items of use taken from i387-tdep.c -- ought to be |
| 21 | merged back in. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "frame.h" |
| 25 | #include "inferior.h" |
| 26 | #include "symtab.h" |
| 27 | |
| 28 | #include <signal.h> |
| 29 | #include <sys/param.h> |
| 30 | #include <sys/user.h> |
| 31 | #include <sys/dir.h> |
| 32 | #include <sys/ioctl.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include "gdbcore.h" |
| 35 | #include <fcntl.h> |
| 36 | #include <sgtty.h> |
| 37 | #define TERMINAL struct sgttyb |
| 38 | |
| 39 | #include "gdbcore.h" |
| 40 | |
| 41 | void |
| 42 | store_inferior_registers(regno) |
| 43 | int regno; |
| 44 | { |
| 45 | struct pt_regset regs; |
| 46 | int reg_tmp, i; |
| 47 | extern char registers[]; |
| 48 | |
| 49 | #if 0 |
| 50 | /* PREPARE_TO_STORE deals with this. */ |
| 51 | if (-1 == regno) |
| 52 | { |
| 53 | #endif |
| 54 | regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)]; |
| 55 | regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)]; |
| 56 | regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)]; |
| 57 | regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)]; |
| 58 | regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)]; |
| 59 | regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)]; |
| 60 | regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)]; |
| 61 | regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)]; |
| 62 | regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)]; |
| 63 | regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)]; |
| 64 | for (i = 0; i < 31; i++) { |
| 65 | regs.pr_fpa.fpa_regs[i] = |
| 66 | *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)]; |
| 67 | } |
| 68 | #if 0 |
| 69 | } |
| 70 | else |
| 71 | { |
| 72 | reg_tmp = *(int *)®isters[REGISTER_BYTE(regno)]; |
| 73 | ptrace(XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®s, 0); |
| 74 | switch (regno) |
| 75 | { |
| 76 | case 0: |
| 77 | regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)]; |
| 78 | break; |
| 79 | case 5: |
| 80 | regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)]; |
| 81 | break; |
| 82 | case 2: |
| 83 | regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)]; |
| 84 | break; |
| 85 | case 1: |
| 86 | regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)]; |
| 87 | break; |
| 88 | case 6: |
| 89 | regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)]; |
| 90 | break; |
| 91 | case 7: |
| 92 | regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)]; |
| 93 | break; |
| 94 | case 15: |
| 95 | regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)]; |
| 96 | break; |
| 97 | case 14: |
| 98 | regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)]; |
| 99 | break; |
| 100 | case 16: |
| 101 | regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)]; |
| 102 | break; |
| 103 | case 17: |
| 104 | regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)]; |
| 105 | break; |
| 106 | } |
| 107 | } |
| 108 | #endif /* 0 */ |
| 109 | ptrace(XPT_WREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®s, 0); |
| 110 | } |
| 111 | |
| 112 | void |
| 113 | fetch_inferior_registers (regno) |
| 114 | int regno; |
| 115 | { |
| 116 | int i; |
| 117 | struct pt_regset regs; |
| 118 | extern char registers[]; |
| 119 | |
| 120 | registers_fetched (); |
| 121 | |
| 122 | ptrace(XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®s, 0); |
| 123 | *(int *)®isters[REGISTER_BYTE(0)] = regs.pr_eax; |
| 124 | *(int *)®isters[REGISTER_BYTE(5)] = regs.pr_ebx; |
| 125 | *(int *)®isters[REGISTER_BYTE(2)] = regs.pr_ecx; |
| 126 | *(int *)®isters[REGISTER_BYTE(1)] = regs.pr_edx; |
| 127 | *(int *)®isters[REGISTER_BYTE(6)] = regs.pr_esi; |
| 128 | *(int *)®isters[REGISTER_BYTE(7)] = regs.pr_edi; |
| 129 | *(int *)®isters[REGISTER_BYTE(15)] = regs.pr_ebp; |
| 130 | *(int *)®isters[REGISTER_BYTE(14)] = regs.pr_esp; |
| 131 | *(int *)®isters[REGISTER_BYTE(16)] = regs.pr_eip; |
| 132 | *(int *)®isters[REGISTER_BYTE(17)] = regs.pr_flags; |
| 133 | for (i = 0; i < FPA_NREGS; i++) { |
| 134 | *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)] = regs.pr_fpa.fpa_regs[i]; |
| 135 | } |
| 136 | bcopy(regs.pr_fpu.fpu_stack[0], ®isters[REGISTER_BYTE(3)], 10); |
| 137 | bcopy(regs.pr_fpu.fpu_stack[1], ®isters[REGISTER_BYTE(4)], 10); |
| 138 | bcopy(regs.pr_fpu.fpu_stack[2], ®isters[REGISTER_BYTE(8)], 10); |
| 139 | bcopy(regs.pr_fpu.fpu_stack[3], ®isters[REGISTER_BYTE(9)], 10); |
| 140 | bcopy(regs.pr_fpu.fpu_stack[4], ®isters[REGISTER_BYTE(10)], 10); |
| 141 | bcopy(regs.pr_fpu.fpu_stack[5], ®isters[REGISTER_BYTE(11)], 10); |
| 142 | bcopy(regs.pr_fpu.fpu_stack[6], ®isters[REGISTER_BYTE(12)], 10); |
| 143 | bcopy(regs.pr_fpu.fpu_stack[7], ®isters[REGISTER_BYTE(13)], 10); |
| 144 | } |
| 145 | |
| 146 | \f |
| 147 | /* Work with core dump and executable files, for GDB. |
| 148 | This code would be in core.c if it weren't machine-dependent. */ |
| 149 | |
| 150 | void |
| 151 | core_file_command (filename, from_tty) |
| 152 | char *filename; |
| 153 | int from_tty; |
| 154 | { |
| 155 | int val; |
| 156 | extern char registers[]; |
| 157 | |
| 158 | /* Discard all vestiges of any previous core file |
| 159 | and mark data and stack spaces as empty. */ |
| 160 | |
| 161 | if (corefile) |
| 162 | free (corefile); |
| 163 | corefile = 0; |
| 164 | |
| 165 | if (corechan >= 0) |
| 166 | close (corechan); |
| 167 | corechan = -1; |
| 168 | |
| 169 | data_start = 0; |
| 170 | data_end = 0; |
| 171 | stack_start = STACK_END_ADDR; |
| 172 | stack_end = STACK_END_ADDR; |
| 173 | |
| 174 | /* Now, if a new core file was specified, open it and digest it. */ |
| 175 | |
| 176 | if (filename) |
| 177 | { |
| 178 | filename = tilde_expand (filename); |
| 179 | make_cleanup (free, filename); |
| 180 | |
| 181 | if (have_inferior_p ()) |
| 182 | error ("To look at a core file, you must kill the program with \"kill\"."); |
| 183 | corechan = open (filename, O_RDONLY, 0); |
| 184 | if (corechan < 0) |
| 185 | perror_with_name (filename); |
| 186 | /* 4.2-style (and perhaps also sysV-style) core dump file. */ |
| 187 | { |
| 188 | struct user u; |
| 189 | int reg_offset; |
| 190 | |
| 191 | val = myread (corechan, &u, sizeof u); |
| 192 | if (val < 0) |
| 193 | perror_with_name (filename); |
| 194 | data_start = exec_data_start; |
| 195 | |
| 196 | data_end = data_start + NBPG * (u.u_dsize - u.u_tsize); |
| 197 | stack_start = stack_end - NBPG * u.u_ssize; |
| 198 | data_offset = NBPG * UPAGES; |
| 199 | stack_offset = ctob(UPAGES + u.u_dsize - u.u_tsize); |
| 200 | reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR; |
| 201 | printf("u.u_tsize= %#x, u.u_dsize= %#x, u.u_ssize= %#x, stack_off= %#x\n", |
| 202 | u.u_tsize, u.u_dsize, u.u_ssize, stack_offset); |
| 203 | |
| 204 | core_aouthdr.a_magic = 0; |
| 205 | |
| 206 | /* Read the register values out of the core file and store |
| 207 | them where `read_register' will find them. */ |
| 208 | |
| 209 | { |
| 210 | register int regno; |
| 211 | |
| 212 | for (regno = 0; regno < NUM_REGS; regno++) |
| 213 | { |
| 214 | char buf[MAX_REGISTER_RAW_SIZE]; |
| 215 | |
| 216 | val = lseek (corechan, register_addr (regno, reg_offset), 0); |
| 217 | if (val < 0) |
| 218 | perror_with_name (filename); |
| 219 | |
| 220 | val = myread (corechan, buf, sizeof buf); |
| 221 | if (val < 0) |
| 222 | perror_with_name (filename); |
| 223 | supply_register (regno, buf); |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | if (filename[0] == '/') |
| 228 | corefile = savestring (filename, strlen (filename)); |
| 229 | else |
| 230 | { |
| 231 | corefile = concat (current_directory, "/", filename, NULL); |
| 232 | } |
| 233 | |
| 234 | set_current_frame(create_new_frame(read_register(FP_REGNUM), |
| 235 | read_pc())); |
| 236 | /* set_current_frame (read_register (FP_REGNUM));*/ |
| 237 | select_frame (get_current_frame (), 0); |
| 238 | validate_files (); |
| 239 | } |
| 240 | else if (from_tty) |
| 241 | printf ("No core file now.\n"); |
| 242 | } |
| 243 | |
| 244 | /* FIXME: This should be merged with i387-tdep.c as well. */ |
| 245 | static |
| 246 | print_fpu_status(ep) |
| 247 | struct pt_regset ep; |
| 248 | { |
| 249 | int i; |
| 250 | int bothstatus; |
| 251 | int top; |
| 252 | int fpreg; |
| 253 | unsigned char *p; |
| 254 | |
| 255 | printf("80387:"); |
| 256 | if (ep.pr_fpu.fpu_ip == 0) { |
| 257 | printf(" not in use.\n"); |
| 258 | return; |
| 259 | } else { |
| 260 | printf("\n"); |
| 261 | } |
| 262 | if (ep.pr_fpu.fpu_status != 0) { |
| 263 | print_387_status_word (ep.pr_fpu.fpu_status); |
| 264 | } |
| 265 | print_387_control_word (ep.pr_fpu.fpu_control); |
| 266 | printf ("last exception: "); |
| 267 | printf ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4); |
| 268 | printf ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip); |
| 269 | printf ("operand 0x%x:0x%x\n", ep.pr_fpu.fpu_data_offset, ep.pr_fpu.fpu_op_sel); |
| 270 | |
| 271 | top = (ep.pr_fpu.fpu_status >> 11) & 7; |
| 272 | |
| 273 | printf ("regno tag msb lsb value\n"); |
| 274 | for (fpreg = 7; fpreg >= 0; fpreg--) |
| 275 | { |
| 276 | double val; |
| 277 | |
| 278 | printf ("%s %d: ", fpreg == top ? "=>" : " ", fpreg); |
| 279 | |
| 280 | switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3) |
| 281 | { |
| 282 | case 0: printf ("valid "); break; |
| 283 | case 1: printf ("zero "); break; |
| 284 | case 2: printf ("trap "); break; |
| 285 | case 3: printf ("empty "); break; |
| 286 | } |
| 287 | for (i = 9; i >= 0; i--) |
| 288 | printf ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]); |
| 289 | |
| 290 | i387_to_double (ep.pr_fpu.fpu_stack[fpreg], (char *)&val); |
| 291 | printf (" %g\n", val); |
| 292 | } |
| 293 | if (ep.pr_fpu.fpu_rsvd1) |
| 294 | warning ("rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1); |
| 295 | if (ep.pr_fpu.fpu_rsvd2) |
| 296 | warning ("rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2); |
| 297 | if (ep.pr_fpu.fpu_rsvd3) |
| 298 | warning ("rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3); |
| 299 | if (ep.pr_fpu.fpu_rsvd5) |
| 300 | warning ("rsvd5 is 0x%x\n", ep.pr_fpu.fpu_rsvd5); |
| 301 | } |
| 302 | |
| 303 | |
| 304 | print_1167_control_word(pcr) |
| 305 | unsigned int pcr; |
| 306 | |
| 307 | { |
| 308 | int pcr_tmp; |
| 309 | |
| 310 | pcr_tmp = pcr & FPA_PCR_MODE; |
| 311 | printf("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12); |
| 312 | switch (pcr_tmp & 12) { |
| 313 | case 0: |
| 314 | printf("RN (Nearest Value)"); |
| 315 | break; |
| 316 | case 1: |
| 317 | printf("RZ (Zero)"); |
| 318 | break; |
| 319 | case 2: |
| 320 | printf("RP (Positive Infinity)"); |
| 321 | break; |
| 322 | case 3: |
| 323 | printf("RM (Negative Infinity)"); |
| 324 | break; |
| 325 | } |
| 326 | printf("; IRND= %d ", pcr_tmp & 2); |
| 327 | if (0 == pcr_tmp & 2) { |
| 328 | printf("(same as RND)\n"); |
| 329 | } else { |
| 330 | printf("(toward zero)\n"); |
| 331 | } |
| 332 | pcr_tmp = pcr & FPA_PCR_EM; |
| 333 | printf("\tEM= %#x", pcr_tmp); |
| 334 | if (pcr_tmp & FPA_PCR_EM_DM) printf(" DM"); |
| 335 | if (pcr_tmp & FPA_PCR_EM_UOM) printf(" UOM"); |
| 336 | if (pcr_tmp & FPA_PCR_EM_PM) printf(" PM"); |
| 337 | if (pcr_tmp & FPA_PCR_EM_UM) printf(" UM"); |
| 338 | if (pcr_tmp & FPA_PCR_EM_OM) printf(" OM"); |
| 339 | if (pcr_tmp & FPA_PCR_EM_ZM) printf(" ZM"); |
| 340 | if (pcr_tmp & FPA_PCR_EM_IM) printf(" IM"); |
| 341 | printf("\n"); |
| 342 | pcr_tmp = FPA_PCR_CC; |
| 343 | printf("\tCC= %#x", pcr_tmp); |
| 344 | if (pcr_tmp & FPA_PCR_20MHZ) printf(" 20MHZ"); |
| 345 | if (pcr_tmp & FPA_PCR_CC_Z) printf(" Z"); |
| 346 | if (pcr_tmp & FPA_PCR_CC_C2) printf(" C2"); |
| 347 | if (pcr_tmp & FPA_PCR_CC_C1) printf(" C1"); |
| 348 | switch (pcr_tmp) { |
| 349 | case FPA_PCR_CC_Z: |
| 350 | printf(" (Equal)"); |
| 351 | break; |
| 352 | case FPA_PCR_CC_C1: |
| 353 | printf(" (Less than)"); |
| 354 | break; |
| 355 | case 0: |
| 356 | printf(" (Greater than)"); |
| 357 | break; |
| 358 | case FPA_PCR_CC_Z | FPA_PCR_CC_C1 | FPA_PCR_CC_C2: |
| 359 | printf(" (Unordered)"); |
| 360 | break; |
| 361 | default: |
| 362 | printf(" (Undefined)"); |
| 363 | break; |
| 364 | } |
| 365 | printf("\n"); |
| 366 | pcr_tmp = pcr & FPA_PCR_AE; |
| 367 | printf("\tAE= %#x", pcr_tmp); |
| 368 | if (pcr_tmp & FPA_PCR_AE_DE) printf(" DE"); |
| 369 | if (pcr_tmp & FPA_PCR_AE_UOE) printf(" UOE"); |
| 370 | if (pcr_tmp & FPA_PCR_AE_PE) printf(" PE"); |
| 371 | if (pcr_tmp & FPA_PCR_AE_UE) printf(" UE"); |
| 372 | if (pcr_tmp & FPA_PCR_AE_OE) printf(" OE"); |
| 373 | if (pcr_tmp & FPA_PCR_AE_ZE) printf(" ZE"); |
| 374 | if (pcr_tmp & FPA_PCR_AE_EE) printf(" EE"); |
| 375 | if (pcr_tmp & FPA_PCR_AE_IE) printf(" IE"); |
| 376 | printf("\n"); |
| 377 | } |
| 378 | |
| 379 | print_1167_regs(regs) |
| 380 | long regs[FPA_NREGS]; |
| 381 | |
| 382 | { |
| 383 | int i; |
| 384 | |
| 385 | union { |
| 386 | double d; |
| 387 | long l[2]; |
| 388 | } xd; |
| 389 | union { |
| 390 | float f; |
| 391 | long l; |
| 392 | } xf; |
| 393 | |
| 394 | |
| 395 | for (i = 0; i < FPA_NREGS; i++) { |
| 396 | xf.l = regs[i]; |
| 397 | printf("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f); |
| 398 | if (!(i & 1)) { |
| 399 | printf("\n"); |
| 400 | } else { |
| 401 | xd.l[1] = regs[i]; |
| 402 | xd.l[0] = regs[i+1]; |
| 403 | printf(", double= %f\n", xd.d); |
| 404 | } |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | print_fpa_status(ep) |
| 409 | struct pt_regset ep; |
| 410 | |
| 411 | { |
| 412 | |
| 413 | printf("WTL 1167:"); |
| 414 | if (ep.pr_fpa.fpa_pcr !=0) { |
| 415 | printf("\n"); |
| 416 | print_1167_control_word(ep.pr_fpa.fpa_pcr); |
| 417 | print_1167_regs(ep.pr_fpa.fpa_regs); |
| 418 | } else { |
| 419 | printf(" not in use.\n"); |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | i386_float_info () |
| 424 | { |
| 425 | char ubuf[UPAGES*NBPG]; |
| 426 | struct pt_regset regset; |
| 427 | extern int corechan; |
| 428 | |
| 429 | if (have_inferior_p()) { |
| 430 | call_ptrace(XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®set, 0); |
| 431 | } else { |
| 432 | if (lseek (corechan, 0, 0) < 0) { |
| 433 | perror ("seek on core file"); |
| 434 | } |
| 435 | if (myread (corechan, ubuf, UPAGES*NBPG) < 0) { |
| 436 | perror ("read on core file"); |
| 437 | } |
| 438 | /* only interested in the floating point registers */ |
| 439 | regset.pr_fpu = ((struct user *) ubuf)->u_fpusave; |
| 440 | regset.pr_fpa = ((struct user *) ubuf)->u_fpasave; |
| 441 | } |
| 442 | print_fpu_status(regset); |
| 443 | print_fpa_status(regset); |
| 444 | } |