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
31 #include <sys/param.h>
34 #include <sys/ioctl.h>
39 #define TERMINAL struct sgttyb
41 extern void print_387_control_word ();
42 extern void print_387_status_word ();
43 extern void i387_to_double (from, to);
45 store_inferior_registers(regno)
48 struct pt_regset regs;
50 extern char registers[];
53 /* PREPARE_TO_STORE deals with this. */
57 regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)];
58 regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)];
59 regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)];
60 regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)];
61 regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)];
62 regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)];
63 regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)];
64 regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)];
65 regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)];
66 regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)];
67 for (i = 0; i < 31; i++) {
68 regs.pr_fpa.fpa_regs[i] =
69 *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)];
75 reg_tmp = *(int *)®isters[REGISTER_BYTE(regno)];
76 ptrace(XPT_RREGS, inferior_pid, ®s, 0);
80 regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)];
83 regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)];
86 regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)];
89 regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)];
92 regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)];
95 regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)];
98 regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)];
101 regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)];
104 regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)];
107 regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)];
112 ptrace(XPT_WREGS, inferior_pid, ®s, 0);
116 fetch_inferior_registers()
119 struct pt_regset regs;
120 extern char registers[];
122 registers_fetched ();
124 ptrace(XPT_RREGS, inferior_pid, ®s, 0);
125 *(int *)®isters[REGISTER_BYTE(0)] = regs.pr_eax;
126 *(int *)®isters[REGISTER_BYTE(5)] = regs.pr_ebx;
127 *(int *)®isters[REGISTER_BYTE(2)] = regs.pr_ecx;
128 *(int *)®isters[REGISTER_BYTE(1)] = regs.pr_edx;
129 *(int *)®isters[REGISTER_BYTE(6)] = regs.pr_esi;
130 *(int *)®isters[REGISTER_BYTE(7)] = regs.pr_edi;
131 *(int *)®isters[REGISTER_BYTE(15)] = regs.pr_ebp;
132 *(int *)®isters[REGISTER_BYTE(14)] = regs.pr_esp;
133 *(int *)®isters[REGISTER_BYTE(16)] = regs.pr_eip;
134 *(int *)®isters[REGISTER_BYTE(17)] = regs.pr_flags;
135 for (i = 0; i < FPA_NREGS; i++) {
136 *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)] = regs.pr_fpa.fpa_regs[i];
138 bcopy(regs.pr_fpu.fpu_stack[0], ®isters[REGISTER_BYTE(3)], 10);
139 bcopy(regs.pr_fpu.fpu_stack[1], ®isters[REGISTER_BYTE(4)], 10);
140 bcopy(regs.pr_fpu.fpu_stack[2], ®isters[REGISTER_BYTE(8)], 10);
141 bcopy(regs.pr_fpu.fpu_stack[3], ®isters[REGISTER_BYTE(9)], 10);
142 bcopy(regs.pr_fpu.fpu_stack[4], ®isters[REGISTER_BYTE(10)], 10);
143 bcopy(regs.pr_fpu.fpu_stack[5], ®isters[REGISTER_BYTE(11)], 10);
144 bcopy(regs.pr_fpu.fpu_stack[6], ®isters[REGISTER_BYTE(12)], 10);
145 bcopy(regs.pr_fpu.fpu_stack[7], ®isters[REGISTER_BYTE(13)], 10);
149 /* Work with core dump and executable files, for GDB.
150 This code would be in core.c if it weren't machine-dependent. */
155 core_file_command (filename, from_tty)
160 extern char registers[];
162 /* Discard all vestiges of any previous core file
163 and mark data and stack spaces as empty. */
175 stack_start = STACK_END_ADDR;
176 stack_end = STACK_END_ADDR;
178 /* Now, if a new core file was specified, open it and digest it. */
182 filename = tilde_expand (filename);
183 make_cleanup (free, filename);
185 if (have_inferior_p ())
186 error ("To look at a core file, you must kill the inferior with \"kill\".");
187 corechan = open (filename, O_RDONLY, 0);
189 perror_with_name (filename);
190 /* 4.2-style (and perhaps also sysV-style) core dump file. */
195 val = myread (corechan, &u, sizeof u);
197 perror_with_name (filename);
198 data_start = exec_data_start;
200 data_end = data_start + NBPG * (u.u_dsize - u.u_tsize);
201 stack_start = stack_end - NBPG * u.u_ssize;
202 data_offset = NBPG * UPAGES;
203 stack_offset = ctob(UPAGES + u.u_dsize - u.u_tsize);
204 reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR;
205 printf("u.u_tsize= %#x, u.u_dsize= %#x, u.u_ssize= %#x, stack_off= %#x\n",
206 u.u_tsize, u.u_dsize, u.u_ssize, stack_offset);
208 core_aouthdr.a_magic = 0;
210 /* Read the register values out of the core file and store
211 them where `read_register' will find them. */
216 for (regno = 0; regno < NUM_REGS; regno++)
218 char buf[MAX_REGISTER_RAW_SIZE];
220 val = lseek (corechan, register_addr (regno, reg_offset), 0);
222 perror_with_name (filename);
224 val = myread (corechan, buf, sizeof buf);
226 perror_with_name (filename);
227 supply_register (regno, buf);
231 if (filename[0] == '/')
232 corefile = savestring (filename, strlen (filename));
235 corefile = concat (current_directory, "/", filename, NULL);
238 set_current_frame(create_new_frame(read_register(FP_REGNUM),
240 /* set_current_frame (read_register (FP_REGNUM));*/
241 select_frame (get_current_frame (), 0);
245 printf ("No core file now.\n");
248 /* FIXME: This should be merged with i387-tdep.c as well. */
260 if (ep.pr_fpu.fpu_ip == 0) {
261 printf(" not in use.\n");
266 if (ep.pr_fpu.fpu_status != 0) {
267 print_387_status_word (ep.pr_fpu.fpu_status);
269 print_387_control_word (ep.pr_fpu.fpu_control);
270 printf ("last exception: ");
271 printf ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4);
272 printf ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip);
273 printf ("operand 0x%x:0x%x\n", ep.pr_fpu.fpu_data_offset, ep.pr_fpu.fpu_op_sel);
275 top = (ep.pr_fpu.fpu_status >> 11) & 7;
277 printf ("regno tag msb lsb value\n");
278 for (fpreg = 7; fpreg >= 0; fpreg--)
282 printf ("%s %d: ", fpreg == top ? "=>" : " ", fpreg);
284 switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3)
286 case 0: printf ("valid "); break;
287 case 1: printf ("zero "); break;
288 case 2: printf ("trap "); break;
289 case 3: printf ("empty "); break;
291 for (i = 9; i >= 0; i--)
292 printf ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]);
294 i387_to_double (ep.pr_fpu.fpu_stack[fpreg], (char *)&val);
295 printf (" %g\n", val);
297 if (ep.pr_fpu.fpu_rsvd1)
298 printf ("warning: rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1);
299 if (ep.pr_fpu.fpu_rsvd2)
300 printf ("warning: rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2);
301 if (ep.pr_fpu.fpu_rsvd3)
302 printf ("warning: rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3);
303 if (ep.pr_fpu.fpu_rsvd5)
304 printf ("warning: rsvd5 is 0x%x\n", ep.pr_fpu.fpu_rsvd5);
308 print_1167_control_word(pcr)
314 pcr_tmp = pcr & FPA_PCR_MODE;
315 printf("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12);
316 switch (pcr_tmp & 12) {
318 printf("RN (Nearest Value)");
324 printf("RP (Positive Infinity)");
327 printf("RM (Negative Infinity)");
330 printf("; IRND= %d ", pcr_tmp & 2);
331 if (0 == pcr_tmp & 2) {
332 printf("(same as RND)\n");
334 printf("(toward zero)\n");
336 pcr_tmp = pcr & FPA_PCR_EM;
337 printf("\tEM= %#x", pcr_tmp);
338 if (pcr_tmp & FPA_PCR_EM_DM) printf(" DM");
339 if (pcr_tmp & FPA_PCR_EM_UOM) printf(" UOM");
340 if (pcr_tmp & FPA_PCR_EM_PM) printf(" PM");
341 if (pcr_tmp & FPA_PCR_EM_UM) printf(" UM");
342 if (pcr_tmp & FPA_PCR_EM_OM) printf(" OM");
343 if (pcr_tmp & FPA_PCR_EM_ZM) printf(" ZM");
344 if (pcr_tmp & FPA_PCR_EM_IM) printf(" IM");
346 pcr_tmp = FPA_PCR_CC;
347 printf("\tCC= %#x", pcr_tmp);
348 if (pcr_tmp & FPA_PCR_20MHZ) printf(" 20MHZ");
349 if (pcr_tmp & FPA_PCR_CC_Z) printf(" Z");
350 if (pcr_tmp & FPA_PCR_CC_C2) printf(" C2");
351 if (pcr_tmp & FPA_PCR_CC_C1) printf(" C1");
357 printf(" (Less than)");
360 printf(" (Greater than)");
362 case FPA_PCR_CC_Z | FPA_PCR_CC_C1 | FPA_PCR_CC_C2:
363 printf(" (Unordered)");
366 printf(" (Undefined)");
370 pcr_tmp = pcr & FPA_PCR_AE;
371 printf("\tAE= %#x", pcr_tmp);
372 if (pcr_tmp & FPA_PCR_AE_DE) printf(" DE");
373 if (pcr_tmp & FPA_PCR_AE_UOE) printf(" UOE");
374 if (pcr_tmp & FPA_PCR_AE_PE) printf(" PE");
375 if (pcr_tmp & FPA_PCR_AE_UE) printf(" UE");
376 if (pcr_tmp & FPA_PCR_AE_OE) printf(" OE");
377 if (pcr_tmp & FPA_PCR_AE_ZE) printf(" ZE");
378 if (pcr_tmp & FPA_PCR_AE_EE) printf(" EE");
379 if (pcr_tmp & FPA_PCR_AE_IE) printf(" IE");
383 print_1167_regs(regs)
384 long regs[FPA_NREGS];
399 for (i = 0; i < FPA_NREGS; i++) {
401 printf("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f);
407 printf(", double= %f\n", xd.d);
418 if (ep.pr_fpa.fpa_pcr !=0) {
420 print_1167_control_word(ep.pr_fpa.fpa_pcr);
421 print_1167_regs(ep.pr_fpa.fpa_regs);
423 printf(" not in use.\n");
429 char ubuf[UPAGES*NBPG];
430 struct pt_regset regset;
433 if (have_inferior_p()) {
434 call_ptrace(XPT_RREGS, inferior_pid, ®set, 0);
436 if (lseek (corechan, 0, 0) < 0) {
437 perror ("seek on core file");
439 if (myread (corechan, ubuf, UPAGES*NBPG) < 0) {
440 perror ("read on core file");
442 /* only interested in the floating point registers */
443 regset.pr_fpu = ((struct user *) ubuf)->u_fpusave;
444 regset.pr_fpa = ((struct user *) ubuf)->u_fpasave;
446 print_fpu_status(regset);
447 print_fpa_status(regset);