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1c7cc583 MK |
1 | // OBSOLETE /* Intel 386 native support. |
2 | // OBSOLETE Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, | |
3 | // OBSOLETE 2000, 2001 Free Software Foundation, Inc. | |
4 | // OBSOLETE | |
5 | // OBSOLETE This file is part of GDB. | |
6 | // OBSOLETE | |
7 | // OBSOLETE This program is free software; you can redistribute it and/or modify | |
8 | // OBSOLETE it under the terms of the GNU General Public License as published by | |
9 | // OBSOLETE the Free Software Foundation; either version 2 of the License, or | |
10 | // OBSOLETE (at your option) any later version. | |
11 | // OBSOLETE | |
12 | // OBSOLETE This program is distributed in the hope that it will be useful, | |
13 | // OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // OBSOLETE GNU General Public License for more details. | |
16 | // OBSOLETE | |
17 | // OBSOLETE You should have received a copy of the GNU General Public License | |
18 | // OBSOLETE along with this program; if not, write to the Free Software | |
19 | // OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | // OBSOLETE Boston, MA 02111-1307, USA. */ | |
21 | // OBSOLETE | |
22 | // OBSOLETE #include "defs.h" | |
23 | // OBSOLETE #include "frame.h" | |
24 | // OBSOLETE #include "inferior.h" | |
25 | // OBSOLETE #include "language.h" | |
26 | // OBSOLETE #include "gdbcore.h" | |
27 | // OBSOLETE #include "regcache.h" | |
28 | // OBSOLETE | |
29 | // OBSOLETE #ifdef USG | |
30 | // OBSOLETE #include <sys/types.h> | |
31 | // OBSOLETE #endif | |
32 | // OBSOLETE | |
33 | // OBSOLETE #include <sys/param.h> | |
34 | // OBSOLETE #include <sys/dir.h> | |
35 | // OBSOLETE #include <signal.h> | |
36 | // OBSOLETE #include <sys/user.h> | |
37 | // OBSOLETE #include <sys/ioctl.h> | |
38 | // OBSOLETE #include <fcntl.h> | |
39 | // OBSOLETE | |
40 | // OBSOLETE #include <sys/file.h> | |
41 | // OBSOLETE #include "gdb_stat.h" | |
42 | // OBSOLETE | |
43 | // OBSOLETE #include <stddef.h> | |
44 | // OBSOLETE #include <sys/ptrace.h> | |
45 | // OBSOLETE | |
46 | // OBSOLETE /* Does AIX define this in <errno.h>? */ | |
47 | // OBSOLETE extern int errno; | |
48 | // OBSOLETE | |
49 | // OBSOLETE #ifdef HAVE_SYS_REG_H | |
50 | // OBSOLETE #include <sys/reg.h> | |
51 | // OBSOLETE #endif | |
52 | // OBSOLETE | |
53 | // OBSOLETE #include "floatformat.h" | |
54 | // OBSOLETE | |
55 | // OBSOLETE #include "target.h" | |
56 | // OBSOLETE | |
57 | // OBSOLETE static void fetch_core_registers (char *, unsigned, int, CORE_ADDR); | |
58 | // OBSOLETE \f | |
59 | // OBSOLETE | |
60 | // OBSOLETE /* this table must line up with REGISTER_NAMES in tm-i386v.h */ | |
61 | // OBSOLETE /* symbols like 'EAX' come from <sys/reg.h> */ | |
62 | // OBSOLETE static int regmap[] = | |
63 | // OBSOLETE { | |
64 | // OBSOLETE EAX, ECX, EDX, EBX, | |
65 | // OBSOLETE USP, EBP, ESI, EDI, | |
66 | // OBSOLETE EIP, EFL, CS, SS, | |
67 | // OBSOLETE DS, ES, FS, GS, | |
68 | // OBSOLETE }; | |
69 | // OBSOLETE | |
70 | // OBSOLETE /* blockend is the value of u.u_ar0, and points to the | |
71 | // OBSOLETE * place where GS is stored | |
72 | // OBSOLETE */ | |
73 | // OBSOLETE | |
74 | // OBSOLETE int | |
75 | // OBSOLETE i386_register_u_addr (int blockend, int regnum) | |
76 | // OBSOLETE { | |
77 | // OBSOLETE #if 0 | |
78 | // OBSOLETE /* this will be needed if fp registers are reinstated */ | |
79 | // OBSOLETE /* for now, you can look at them with 'info float' | |
80 | // OBSOLETE * sys5 wont let you change them with ptrace anyway | |
81 | // OBSOLETE */ | |
82 | // OBSOLETE if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM) | |
83 | // OBSOLETE { | |
84 | // OBSOLETE int ubase, fpstate; | |
85 | // OBSOLETE struct user u; | |
86 | // OBSOLETE ubase = blockend + 4 * (SS + 1) - KSTKSZ; | |
87 | // OBSOLETE fpstate = ubase + ((char *) &u.u_fpstate - (char *) &u); | |
88 | // OBSOLETE return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM)); | |
89 | // OBSOLETE } | |
90 | // OBSOLETE else | |
91 | // OBSOLETE #endif | |
92 | // OBSOLETE return (blockend + 4 * regmap[regnum]); | |
93 | // OBSOLETE | |
94 | // OBSOLETE } | |
95 | // OBSOLETE | |
96 | // OBSOLETE /* The code below only work on the aix ps/2 (i386-ibm-aix) - | |
97 | // OBSOLETE * mtranle@paris - Sat Apr 11 10:34:12 1992 | |
98 | // OBSOLETE */ | |
99 | // OBSOLETE | |
100 | // OBSOLETE struct env387 | |
101 | // OBSOLETE { | |
102 | // OBSOLETE unsigned short control; | |
103 | // OBSOLETE unsigned short r0; | |
104 | // OBSOLETE unsigned short status; | |
105 | // OBSOLETE unsigned short r1; | |
106 | // OBSOLETE unsigned short tag; | |
107 | // OBSOLETE unsigned short r2; | |
108 | // OBSOLETE unsigned long eip; | |
109 | // OBSOLETE unsigned short code_seg; | |
110 | // OBSOLETE unsigned short opcode; | |
111 | // OBSOLETE unsigned long operand; | |
112 | // OBSOLETE unsigned short operand_seg; | |
113 | // OBSOLETE unsigned short r3; | |
114 | // OBSOLETE unsigned char regs[8][10]; | |
115 | // OBSOLETE }; | |
116 | // OBSOLETE | |
117 | // OBSOLETE static | |
118 | // OBSOLETE print_387_status (unsigned short status, struct env387 *ep) | |
119 | // OBSOLETE { | |
120 | // OBSOLETE int i; | |
121 | // OBSOLETE int bothstatus; | |
122 | // OBSOLETE int top; | |
123 | // OBSOLETE int fpreg; | |
124 | // OBSOLETE unsigned char *p; | |
125 | // OBSOLETE | |
126 | // OBSOLETE bothstatus = ((status != 0) && (ep->status != 0)); | |
127 | // OBSOLETE if (status != 0) | |
128 | // OBSOLETE { | |
129 | // OBSOLETE if (bothstatus) | |
130 | // OBSOLETE printf_unfiltered ("u: "); | |
131 | // OBSOLETE print_387_status_word (status); | |
132 | // OBSOLETE } | |
133 | // OBSOLETE | |
134 | // OBSOLETE if (ep->status != 0) | |
135 | // OBSOLETE { | |
136 | // OBSOLETE if (bothstatus) | |
137 | // OBSOLETE printf_unfiltered ("e: "); | |
138 | // OBSOLETE print_387_status_word (ep->status); | |
139 | // OBSOLETE } | |
140 | // OBSOLETE | |
141 | // OBSOLETE print_387_control_word (ep->control); | |
142 | // OBSOLETE printf_unfiltered ("last exception: "); | |
143 | // OBSOLETE printf_unfiltered ("opcode %s; ", local_hex_string (ep->opcode)); | |
144 | // OBSOLETE printf_unfiltered ("pc %s:", local_hex_string (ep->code_seg)); | |
145 | // OBSOLETE printf_unfiltered ("%s; ", local_hex_string (ep->eip)); | |
146 | // OBSOLETE printf_unfiltered ("operand %s", local_hex_string (ep->operand_seg)); | |
147 | // OBSOLETE printf_unfiltered (":%s\n", local_hex_string (ep->operand)); | |
148 | // OBSOLETE | |
149 | // OBSOLETE top = ((ep->status >> 11) & 7); | |
150 | // OBSOLETE | |
151 | // OBSOLETE printf_unfiltered ("regno tag msb lsb value\n"); | |
152 | // OBSOLETE for (fpreg = 7; fpreg >= 0; fpreg--) | |
153 | // OBSOLETE { | |
154 | // OBSOLETE double val; | |
155 | // OBSOLETE | |
156 | // OBSOLETE printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : " ", fpreg); | |
157 | // OBSOLETE | |
158 | // OBSOLETE switch ((ep->tag >> ((7 - fpreg) * 2)) & 3) | |
159 | // OBSOLETE { | |
160 | // OBSOLETE case 0: | |
161 | // OBSOLETE printf_unfiltered ("valid "); | |
162 | // OBSOLETE break; | |
163 | // OBSOLETE case 1: | |
164 | // OBSOLETE printf_unfiltered ("zero "); | |
165 | // OBSOLETE break; | |
166 | // OBSOLETE case 2: | |
167 | // OBSOLETE printf_unfiltered ("trap "); | |
168 | // OBSOLETE break; | |
169 | // OBSOLETE case 3: | |
170 | // OBSOLETE printf_unfiltered ("empty "); | |
171 | // OBSOLETE break; | |
172 | // OBSOLETE } | |
173 | // OBSOLETE for (i = 9; i >= 0; i--) | |
174 | // OBSOLETE printf_unfiltered ("%02x", ep->regs[fpreg][i]); | |
175 | // OBSOLETE | |
176 | // OBSOLETE i387_to_double ((char *) ep->regs[fpreg], (char *) &val); | |
177 | // OBSOLETE printf_unfiltered (" %#g\n", val); | |
178 | // OBSOLETE } | |
179 | // OBSOLETE } | |
180 | // OBSOLETE | |
181 | // OBSOLETE static struct env387 core_env387; | |
182 | // OBSOLETE | |
183 | // OBSOLETE void | |
184 | // OBSOLETE i386_float_info (void) | |
185 | // OBSOLETE { | |
186 | // OBSOLETE struct env387 fps; | |
187 | // OBSOLETE int fpsaved = 0; | |
188 | // OBSOLETE /* We need to reverse the order of the registers. Apparently AIX stores | |
189 | // OBSOLETE the highest-numbered ones first. */ | |
190 | // OBSOLETE struct env387 fps_fixed; | |
191 | // OBSOLETE int i; | |
192 | // OBSOLETE | |
193 | // OBSOLETE if (! ptid_equal (inferior_ptid, null_ptid)) | |
194 | // OBSOLETE { | |
195 | // OBSOLETE char buf[10]; | |
196 | // OBSOLETE unsigned short status; | |
197 | // OBSOLETE | |
198 | // OBSOLETE ptrace (PT_READ_FPR, PIDGET (inferior_ptid), buf, | |
199 | // OBSOLETE offsetof (struct env387, status)); | |
200 | // OBSOLETE memcpy (&status, buf, sizeof (status)); | |
201 | // OBSOLETE fpsaved = status; | |
202 | // OBSOLETE } | |
203 | // OBSOLETE else | |
204 | // OBSOLETE { | |
205 | // OBSOLETE if ((fpsaved = core_env387.status) != 0) | |
206 | // OBSOLETE memcpy (&fps, &core_env387, sizeof (fps)); | |
207 | // OBSOLETE } | |
208 | // OBSOLETE | |
209 | // OBSOLETE if (fpsaved == 0) | |
210 | // OBSOLETE { | |
211 | // OBSOLETE printf_unfiltered ("no floating point status saved\n"); | |
212 | // OBSOLETE return; | |
213 | // OBSOLETE } | |
214 | // OBSOLETE | |
215 | // OBSOLETE if (! ptid_equal (inferior_ptid, null_ptid)) | |
216 | // OBSOLETE { | |
217 | // OBSOLETE int offset; | |
218 | // OBSOLETE for (offset = 0; offset < sizeof (fps); offset += 10) | |
219 | // OBSOLETE { | |
220 | // OBSOLETE char buf[10]; | |
221 | // OBSOLETE ptrace (PT_READ_FPR, PIDGET (inferior_ptid), buf, offset); | |
222 | // OBSOLETE memcpy ((char *) &fps.control + offset, buf, | |
223 | // OBSOLETE MIN (10, sizeof (fps) - offset)); | |
224 | // OBSOLETE } | |
225 | // OBSOLETE } | |
226 | // OBSOLETE fps_fixed = fps; | |
227 | // OBSOLETE for (i = 0; i < 8; ++i) | |
228 | // OBSOLETE memcpy (fps_fixed.regs[i], fps.regs[7 - i], 10); | |
229 | // OBSOLETE print_387_status (0, &fps_fixed); | |
230 | // OBSOLETE } | |
231 | // OBSOLETE | |
232 | // OBSOLETE /* Fetch one register. */ | |
233 | // OBSOLETE static void | |
234 | // OBSOLETE fetch_register (int regno) | |
235 | // OBSOLETE { | |
236 | // OBSOLETE char buf[MAX_REGISTER_RAW_SIZE]; | |
237 | // OBSOLETE if (regno < FP0_REGNUM) | |
238 | // OBSOLETE *(int *) buf = ptrace (PT_READ_GPR, PIDGET (inferior_ptid), | |
239 | // OBSOLETE PT_REG (regmap[regno]), 0, 0); | |
240 | // OBSOLETE else | |
241 | // OBSOLETE ptrace (PT_READ_FPR, PIDGET (inferior_ptid), buf, | |
242 | // OBSOLETE (regno - FP0_REGNUM) * 10 + offsetof (struct env387, regs)); | |
243 | // OBSOLETE supply_register (regno, buf); | |
244 | // OBSOLETE } | |
245 | // OBSOLETE | |
246 | // OBSOLETE void | |
247 | // OBSOLETE fetch_inferior_registers (int regno) | |
248 | // OBSOLETE { | |
249 | // OBSOLETE if (regno < 0) | |
250 | // OBSOLETE for (regno = 0; regno < NUM_REGS; regno++) | |
251 | // OBSOLETE fetch_register (regno); | |
252 | // OBSOLETE else | |
253 | // OBSOLETE fetch_register (regno); | |
254 | // OBSOLETE } | |
255 | // OBSOLETE | |
256 | // OBSOLETE /* store one register */ | |
257 | // OBSOLETE static void | |
258 | // OBSOLETE store_register (int regno) | |
259 | // OBSOLETE { | |
260 | // OBSOLETE char buf[80]; | |
261 | // OBSOLETE errno = 0; | |
262 | // OBSOLETE if (regno < FP0_REGNUM) | |
263 | // OBSOLETE ptrace (PT_WRITE_GPR, PIDGET (inferior_ptid), PT_REG (regmap[regno]), | |
264 | // OBSOLETE *(int *) ®isters[REGISTER_BYTE (regno)], 0); | |
265 | // OBSOLETE else | |
266 | // OBSOLETE ptrace (PT_WRITE_FPR, PIDGET (inferior_ptid), | |
267 | // OBSOLETE ®isters[REGISTER_BYTE (regno)], | |
268 | // OBSOLETE (regno - FP0_REGNUM) * 10 + offsetof (struct env387, regs)); | |
269 | // OBSOLETE | |
270 | // OBSOLETE if (errno != 0) | |
271 | // OBSOLETE { | |
272 | // OBSOLETE sprintf (buf, "writing register number %d", regno); | |
273 | // OBSOLETE perror_with_name (buf); | |
274 | // OBSOLETE } | |
275 | // OBSOLETE } | |
276 | // OBSOLETE | |
277 | // OBSOLETE /* Store our register values back into the inferior. | |
278 | // OBSOLETE If REGNO is -1, do this for all registers. | |
279 | // OBSOLETE Otherwise, REGNO specifies which register (so we can save time). */ | |
280 | // OBSOLETE void | |
281 | // OBSOLETE store_inferior_registers (int regno) | |
282 | // OBSOLETE { | |
283 | // OBSOLETE if (regno < 0) | |
284 | // OBSOLETE for (regno = 0; regno < NUM_REGS; regno++) | |
285 | // OBSOLETE store_register (regno); | |
286 | // OBSOLETE else | |
287 | // OBSOLETE store_register (regno); | |
288 | // OBSOLETE } | |
289 | // OBSOLETE | |
290 | // OBSOLETE #ifndef CD_AX /* defined in sys/i386/coredump.h */ | |
291 | // OBSOLETE #define CD_AX 0 | |
292 | // OBSOLETE #define CD_BX 1 | |
293 | // OBSOLETE #define CD_CX 2 | |
294 | // OBSOLETE #define CD_DX 3 | |
295 | // OBSOLETE #define CD_SI 4 | |
296 | // OBSOLETE #define CD_DI 5 | |
297 | // OBSOLETE #define CD_BP 6 | |
298 | // OBSOLETE #define CD_SP 7 | |
299 | // OBSOLETE #define CD_FL 8 | |
300 | // OBSOLETE #define CD_IP 9 | |
301 | // OBSOLETE #define CD_CS 10 | |
302 | // OBSOLETE #define CD_DS 11 | |
303 | // OBSOLETE #define CD_ES 12 | |
304 | // OBSOLETE #define CD_FS 13 | |
305 | // OBSOLETE #define CD_GS 14 | |
306 | // OBSOLETE #define CD_SS 15 | |
307 | // OBSOLETE #endif | |
308 | // OBSOLETE | |
309 | // OBSOLETE /* | |
310 | // OBSOLETE * The order here in core_regmap[] has to be the same as in | |
311 | // OBSOLETE * regmap[] above. | |
312 | // OBSOLETE */ | |
313 | // OBSOLETE static int core_regmap[] = | |
314 | // OBSOLETE { | |
315 | // OBSOLETE CD_AX, CD_CX, CD_DX, CD_BX, | |
316 | // OBSOLETE CD_SP, CD_BP, CD_SI, CD_DI, | |
317 | // OBSOLETE CD_IP, CD_FL, CD_CS, CD_SS, | |
318 | // OBSOLETE CD_DS, CD_ES, CD_FS, CD_GS, | |
319 | // OBSOLETE }; | |
320 | // OBSOLETE | |
321 | // OBSOLETE /* Provide registers to GDB from a core file. | |
322 | // OBSOLETE | |
323 | // OBSOLETE CORE_REG_SECT points to an array of bytes, which were obtained from | |
324 | // OBSOLETE a core file which BFD thinks might contain register contents. | |
325 | // OBSOLETE CORE_REG_SIZE is its size. | |
326 | // OBSOLETE | |
327 | // OBSOLETE WHICH says which register set corelow suspects this is: | |
328 | // OBSOLETE 0 --- the general-purpose register set | |
329 | // OBSOLETE 2 --- the floating-point register set | |
330 | // OBSOLETE | |
331 | // OBSOLETE REG_ADDR isn't used. */ | |
332 | // OBSOLETE | |
333 | // OBSOLETE static void | |
334 | // OBSOLETE fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, | |
335 | // OBSOLETE int which, CORE_ADDR reg_addr) | |
336 | // OBSOLETE { | |
337 | // OBSOLETE | |
338 | // OBSOLETE if (which == 0) | |
339 | // OBSOLETE { | |
340 | // OBSOLETE /* Integer registers */ | |
341 | // OBSOLETE | |
342 | // OBSOLETE #define cd_regs(n) ((int *)core_reg_sect)[n] | |
343 | // OBSOLETE #define regs(n) *((int *) ®isters[REGISTER_BYTE (n)]) | |
344 | // OBSOLETE | |
345 | // OBSOLETE int i; | |
346 | // OBSOLETE for (i = 0; i < FP0_REGNUM; i++) | |
347 | // OBSOLETE regs (i) = cd_regs (core_regmap[i]); | |
348 | // OBSOLETE } | |
349 | // OBSOLETE else if (which == 2) | |
350 | // OBSOLETE { | |
351 | // OBSOLETE /* Floating point registers */ | |
352 | // OBSOLETE | |
353 | // OBSOLETE if (core_reg_size >= sizeof (core_env387)) | |
354 | // OBSOLETE memcpy (&core_env387, core_reg_sect, core_reg_size); | |
355 | // OBSOLETE else | |
356 | // OBSOLETE fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n"); | |
357 | // OBSOLETE } | |
358 | // OBSOLETE } | |
359 | // OBSOLETE \f | |
360 | // OBSOLETE | |
361 | // OBSOLETE /* Register that we are able to handle i386aix core file formats. | |
362 | // OBSOLETE FIXME: is this really bfd_target_unknown_flavour? */ | |
363 | // OBSOLETE | |
364 | // OBSOLETE static struct core_fns i386aix_core_fns = | |
365 | // OBSOLETE { | |
366 | // OBSOLETE bfd_target_unknown_flavour, /* core_flavour */ | |
367 | // OBSOLETE default_check_format, /* check_format */ | |
368 | // OBSOLETE default_core_sniffer, /* core_sniffer */ | |
369 | // OBSOLETE fetch_core_registers, /* core_read_registers */ | |
370 | // OBSOLETE NULL /* next */ | |
371 | // OBSOLETE }; | |
372 | // OBSOLETE | |
373 | // OBSOLETE void | |
374 | // OBSOLETE _initialize_core_i386aix (void) | |
375 | // OBSOLETE { | |
376 | // OBSOLETE add_core_fns (&i386aix_core_fns); | |
377 | // OBSOLETE } |