1 /* Sequent Symmetry host interface, for GDB when running under Unix.
2 Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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. */
20 /* FIXME, some 387-specific items of use taken from i387-tdep.c -- ought to be
30 #include <sys/param.h>
33 #include <sys/ioctl.h>
38 #define TERMINAL struct sgttyb
40 extern void print_387_control_word ();
41 extern void print_387_status_word ();
42 extern void i387_to_double (from, to);
44 store_inferior_registers(regno)
47 struct pt_regset regs;
49 extern char registers[];
52 /* PREPARE_TO_STORE deals with this. */
56 regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)];
57 regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)];
58 regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)];
59 regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)];
60 regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)];
61 regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)];
62 regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)];
63 regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)];
64 regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)];
65 regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)];
66 for (i = 0; i < 31; i++) {
67 regs.pr_fpa.fpa_regs[i] =
68 *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)];
74 reg_tmp = *(int *)®isters[REGISTER_BYTE(regno)];
75 ptrace(XPT_RREGS, inferior_pid, ®s, 0);
79 regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)];
82 regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)];
85 regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)];
88 regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)];
91 regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)];
94 regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)];
97 regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)];
100 regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)];
103 regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)];
106 regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)];
111 ptrace(XPT_WREGS, inferior_pid, ®s, 0);
115 fetch_inferior_registers()
118 struct pt_regset regs;
119 extern char registers[];
121 registers_fetched ();
123 ptrace(XPT_RREGS, inferior_pid, ®s, 0);
124 *(int *)®isters[REGISTER_BYTE(0)] = regs.pr_eax;
125 *(int *)®isters[REGISTER_BYTE(5)] = regs.pr_ebx;
126 *(int *)®isters[REGISTER_BYTE(2)] = regs.pr_ecx;
127 *(int *)®isters[REGISTER_BYTE(1)] = regs.pr_edx;
128 *(int *)®isters[REGISTER_BYTE(6)] = regs.pr_esi;
129 *(int *)®isters[REGISTER_BYTE(7)] = regs.pr_edi;
130 *(int *)®isters[REGISTER_BYTE(15)] = regs.pr_ebp;
131 *(int *)®isters[REGISTER_BYTE(14)] = regs.pr_esp;
132 *(int *)®isters[REGISTER_BYTE(16)] = regs.pr_eip;
133 *(int *)®isters[REGISTER_BYTE(17)] = regs.pr_flags;
134 for (i = 0; i < FPA_NREGS; i++) {
135 *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)] = regs.pr_fpa.fpa_regs[i];
137 bcopy(regs.pr_fpu.fpu_stack[0], ®isters[REGISTER_BYTE(3)], 10);
138 bcopy(regs.pr_fpu.fpu_stack[1], ®isters[REGISTER_BYTE(4)], 10);
139 bcopy(regs.pr_fpu.fpu_stack[2], ®isters[REGISTER_BYTE(8)], 10);
140 bcopy(regs.pr_fpu.fpu_stack[3], ®isters[REGISTER_BYTE(9)], 10);
141 bcopy(regs.pr_fpu.fpu_stack[4], ®isters[REGISTER_BYTE(10)], 10);
142 bcopy(regs.pr_fpu.fpu_stack[5], ®isters[REGISTER_BYTE(11)], 10);
143 bcopy(regs.pr_fpu.fpu_stack[6], ®isters[REGISTER_BYTE(12)], 10);
144 bcopy(regs.pr_fpu.fpu_stack[7], ®isters[REGISTER_BYTE(13)], 10);
148 /* Work with core dump and executable files, for GDB.
149 This code would be in core.c if it weren't machine-dependent. */
154 core_file_command (filename, from_tty)
159 extern char registers[];
161 /* Discard all vestiges of any previous core file
162 and mark data and stack spaces as empty. */
174 stack_start = STACK_END_ADDR;
175 stack_end = STACK_END_ADDR;
177 /* Now, if a new core file was specified, open it and digest it. */
181 filename = tilde_expand (filename);
182 make_cleanup (free, filename);
184 if (have_inferior_p ())
185 error ("To look at a core file, you must kill the inferior with \"kill\".");
186 corechan = open (filename, O_RDONLY, 0);
188 perror_with_name (filename);
189 /* 4.2-style (and perhaps also sysV-style) core dump file. */
194 val = myread (corechan, &u, sizeof u);
196 perror_with_name (filename);
197 data_start = exec_data_start;
199 data_end = data_start + NBPG * (u.u_dsize - u.u_tsize);
200 stack_start = stack_end - NBPG * u.u_ssize;
201 data_offset = NBPG * UPAGES;
202 stack_offset = ctob(UPAGES + u.u_dsize - u.u_tsize);
203 reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR;
204 printf("u.u_tsize= %#x, u.u_dsize= %#x, u.u_ssize= %#x, stack_off= %#x\n",
205 u.u_tsize, u.u_dsize, u.u_ssize, stack_offset);
207 core_aouthdr.a_magic = 0;
209 /* Read the register values out of the core file and store
210 them where `read_register' will find them. */
215 for (regno = 0; regno < NUM_REGS; regno++)
217 char buf[MAX_REGISTER_RAW_SIZE];
219 val = lseek (corechan, register_addr (regno, reg_offset), 0);
221 perror_with_name (filename);
223 val = myread (corechan, buf, sizeof buf);
225 perror_with_name (filename);
226 supply_register (regno, buf);
230 if (filename[0] == '/')
231 corefile = savestring (filename, strlen (filename));
234 corefile = concat (current_directory, "/", filename, NULL);
237 set_current_frame(create_new_frame(read_register(FP_REGNUM),
239 /* set_current_frame (read_register (FP_REGNUM));*/
240 select_frame (get_current_frame (), 0);
244 printf ("No core file now.\n");
247 /* FIXME: This should be merged with i387-tdep.c as well. */
259 if (ep.pr_fpu.fpu_ip == 0) {
260 printf(" not in use.\n");
265 if (ep.pr_fpu.fpu_status != 0) {
266 print_387_status_word (ep.pr_fpu.fpu_status);
268 print_387_control_word (ep.pr_fpu.fpu_control);
269 printf ("last exception: ");
270 printf ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4);
271 printf ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip);
272 printf ("operand 0x%x:0x%x\n", ep.pr_fpu.fpu_data_offset, ep.pr_fpu.fpu_op_sel);
274 top = (ep.pr_fpu.fpu_status >> 11) & 7;
276 printf ("regno tag msb lsb value\n");
277 for (fpreg = 7; fpreg >= 0; fpreg--)
281 printf ("%s %d: ", fpreg == top ? "=>" : " ", fpreg);
283 switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3)
285 case 0: printf ("valid "); break;
286 case 1: printf ("zero "); break;
287 case 2: printf ("trap "); break;
288 case 3: printf ("empty "); break;
290 for (i = 9; i >= 0; i--)
291 printf ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]);
293 i387_to_double (ep.pr_fpu.fpu_stack[fpreg], (char *)&val);
294 printf (" %g\n", val);
296 if (ep.pr_fpu.fpu_rsvd1)
297 printf ("warning: rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1);
298 if (ep.pr_fpu.fpu_rsvd2)
299 printf ("warning: rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2);
300 if (ep.pr_fpu.fpu_rsvd3)
301 printf ("warning: rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3);
302 if (ep.pr_fpu.fpu_rsvd5)
303 printf ("warning: rsvd5 is 0x%x\n", ep.pr_fpu.fpu_rsvd5);
307 print_1167_control_word(pcr)
313 pcr_tmp = pcr & FPA_PCR_MODE;
314 printf("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12);
315 switch (pcr_tmp & 12) {
317 printf("RN (Nearest Value)");
323 printf("RP (Positive Infinity)");
326 printf("RM (Negative Infinity)");
329 printf("; IRND= %d ", pcr_tmp & 2);
330 if (0 == pcr_tmp & 2) {
331 printf("(same as RND)\n");
333 printf("(toward zero)\n");
335 pcr_tmp = pcr & FPA_PCR_EM;
336 printf("\tEM= %#x", pcr_tmp);
337 if (pcr_tmp & FPA_PCR_EM_DM) printf(" DM");
338 if (pcr_tmp & FPA_PCR_EM_UOM) printf(" UOM");
339 if (pcr_tmp & FPA_PCR_EM_PM) printf(" PM");
340 if (pcr_tmp & FPA_PCR_EM_UM) printf(" UM");
341 if (pcr_tmp & FPA_PCR_EM_OM) printf(" OM");
342 if (pcr_tmp & FPA_PCR_EM_ZM) printf(" ZM");
343 if (pcr_tmp & FPA_PCR_EM_IM) printf(" IM");
345 pcr_tmp = FPA_PCR_CC;
346 printf("\tCC= %#x", pcr_tmp);
347 if (pcr_tmp & FPA_PCR_20MHZ) printf(" 20MHZ");
348 if (pcr_tmp & FPA_PCR_CC_Z) printf(" Z");
349 if (pcr_tmp & FPA_PCR_CC_C2) printf(" C2");
350 if (pcr_tmp & FPA_PCR_CC_C1) printf(" C1");
356 printf(" (Less than)");
359 printf(" (Greater than)");
361 case FPA_PCR_CC_Z | FPA_PCR_CC_C1 | FPA_PCR_CC_C2:
362 printf(" (Unordered)");
365 printf(" (Undefined)");
369 pcr_tmp = pcr & FPA_PCR_AE;
370 printf("\tAE= %#x", pcr_tmp);
371 if (pcr_tmp & FPA_PCR_AE_DE) printf(" DE");
372 if (pcr_tmp & FPA_PCR_AE_UOE) printf(" UOE");
373 if (pcr_tmp & FPA_PCR_AE_PE) printf(" PE");
374 if (pcr_tmp & FPA_PCR_AE_UE) printf(" UE");
375 if (pcr_tmp & FPA_PCR_AE_OE) printf(" OE");
376 if (pcr_tmp & FPA_PCR_AE_ZE) printf(" ZE");
377 if (pcr_tmp & FPA_PCR_AE_EE) printf(" EE");
378 if (pcr_tmp & FPA_PCR_AE_IE) printf(" IE");
382 print_1167_regs(regs)
383 long regs[FPA_NREGS];
398 for (i = 0; i < FPA_NREGS; i++) {
400 printf("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f);
406 printf(", double= %f\n", xd.d);
417 if (ep.pr_fpa.fpa_pcr !=0) {
419 print_1167_control_word(ep.pr_fpa.fpa_pcr);
420 print_1167_regs(ep.pr_fpa.fpa_regs);
422 printf(" not in use.\n");
428 char ubuf[UPAGES*NBPG];
429 struct pt_regset regset;
432 if (have_inferior_p()) {
433 call_ptrace(XPT_RREGS, inferior_pid, ®set, 0);
435 if (lseek (corechan, 0, 0) < 0) {
436 perror ("seek on core file");
438 if (myread (corechan, ubuf, UPAGES*NBPG) < 0) {
439 perror ("read on core file");
441 /* only interested in the floating point registers */
442 regset.pr_fpu = ((struct user *) ubuf)->u_fpusave;
443 regset.pr_fpa = ((struct user *) ubuf)->u_fpasave;
445 print_fpu_status(regset);
446 print_fpa_status(regset);