Commit | Line | Data |
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07d021a6 | 1 | /* Sequent Symmetry host interface, for GDB when running under Unix. |
7919c3ed | 2 | Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc. |
07d021a6 JG |
3 | |
4 | This file is part of GDB. | |
5 | ||
99a7de40 | 6 | This program is free software; you can redistribute it and/or modify |
07d021a6 | 7 | it under the terms of the GNU General Public License as published by |
99a7de40 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
07d021a6 | 10 | |
99a7de40 | 11 | This program is distributed in the hope that it will be useful, |
07d021a6 JG |
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 | |
99a7de40 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
07d021a6 | 19 | |
5142120e JG |
20 | /* FIXME, some 387-specific items of use taken from i387-tdep.c -- ought to be |
21 | merged back in. */ | |
07d021a6 | 22 | |
07d021a6 | 23 | #include "defs.h" |
07d021a6 JG |
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> | |
07d021a6 JG |
36 | #include <sgtty.h> |
37 | #define TERMINAL struct sgttyb | |
38 | ||
7919c3ed | 39 | #include "gdbcore.h" |
5142120e | 40 | |
7919c3ed | 41 | void |
07d021a6 JG |
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, ®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, ®s, 0); | |
110 | } | |
111 | ||
112 | void | |
7919c3ed JG |
113 | fetch_inferior_registers (regno) |
114 | int regno; | |
07d021a6 JG |
115 | { |
116 | int i; | |
117 | struct pt_regset regs; | |
118 | extern char registers[]; | |
119 | ||
120 | registers_fetched (); | |
121 | ||
122 | ptrace(XPT_RREGS, inferior_pid, ®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 | ||
07d021a6 JG |
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 inferior 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 | { | |
58ae87f6 | 231 | corefile = concat (current_directory, "/", filename, NULL); |
07d021a6 JG |
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 | ||
5142120e | 244 | /* FIXME: This should be merged with i387-tdep.c as well. */ |
07d021a6 JG |
245 | static |
246 | print_fpu_status(ep) | |
247 | struct pt_regset ep; | |
07d021a6 JG |
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 | printf ("warning: rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1); | |
295 | if (ep.pr_fpu.fpu_rsvd2) | |
296 | printf ("warning: rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2); | |
297 | if (ep.pr_fpu.fpu_rsvd3) | |
298 | printf ("warning: rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3); | |
299 | if (ep.pr_fpu.fpu_rsvd5) | |
300 | printf ("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 () | |
07d021a6 JG |
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, ®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 | } |