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fb1415ae JG |
1 | /* Machine-dependent code which would otherwise be in inflow.c and core.c, |
2 | for GDB, the GNU debugger. This code is for the HP PA-RISC cpu. | |
3 | Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. | |
4 | ||
5 | Contributed by the Center for Software Science at the | |
6 | University of Utah (pa-gdb-bugs@cs.utah.edu). | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
23 | ||
24 | #include "defs.h" | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "value.h" | |
28 | ||
29 | /* For argument passing to the inferior */ | |
30 | #include "symtab.h" | |
31 | ||
32 | #ifdef USG | |
33 | #include <sys/types.h> | |
34 | #endif | |
35 | ||
36 | #include <sys/param.h> | |
37 | #include <sys/dir.h> | |
38 | #include <signal.h> | |
39 | #include <sys/ioctl.h> | |
40 | ||
41 | #ifdef COFF_ENCAPSULATE | |
42 | #include "a.out.encap.h" | |
43 | #else | |
44 | #include <a.out.h> | |
45 | #endif | |
46 | #ifndef N_SET_MAGIC | |
47 | #define N_SET_MAGIC(exec, val) ((exec).a_magic = (val)) | |
48 | #endif | |
49 | ||
50 | /*#include <sys/user.h> After a.out.h */ | |
51 | #include <sys/file.h> | |
52 | #include <sys/stat.h> | |
fb1415ae | 53 | #include <machine/psl.h> |
9f739abd | 54 | #include "wait.h" |
fb1415ae JG |
55 | |
56 | #include "gdbcore.h" | |
57 | #include "gdbcmd.h" | |
9f739abd | 58 | #include "target.h" |
fb1415ae | 59 | |
fb1415ae | 60 | \f |
fb1415ae JG |
61 | /* Last modification time of executable file. |
62 | Also used in source.c to compare against mtime of a source file. */ | |
63 | ||
64 | extern int exec_mtime; | |
65 | ||
66 | /* Virtual addresses of bounds of the two areas of memory in the core file. */ | |
67 | ||
68 | /* extern CORE_ADDR data_start; */ | |
69 | extern CORE_ADDR data_end; | |
70 | extern CORE_ADDR stack_start; | |
71 | extern CORE_ADDR stack_end; | |
72 | ||
73 | /* Virtual addresses of bounds of two areas of memory in the exec file. | |
74 | Note that the data area in the exec file is used only when there is no core file. */ | |
75 | ||
76 | extern CORE_ADDR text_start; | |
77 | extern CORE_ADDR text_end; | |
78 | ||
79 | extern CORE_ADDR exec_data_start; | |
80 | extern CORE_ADDR exec_data_end; | |
81 | ||
82 | /* Address in executable file of start of text area data. */ | |
83 | ||
84 | extern int text_offset; | |
85 | ||
86 | /* Address in executable file of start of data area data. */ | |
87 | ||
88 | extern int exec_data_offset; | |
89 | ||
90 | /* Address in core file of start of data area data. */ | |
91 | ||
92 | extern int data_offset; | |
93 | ||
94 | /* Address in core file of start of stack area data. */ | |
95 | ||
96 | extern int stack_offset; | |
97 | ||
98 | struct header file_hdr; | |
99 | struct som_exec_auxhdr exec_hdr; | |
100 | \f | |
fb1415ae JG |
101 | /* Routines to extract various sized constants out of hppa |
102 | instructions. */ | |
103 | ||
104 | /* This assumes that no garbage lies outside of the lower bits of | |
105 | value. */ | |
106 | ||
107 | int | |
108 | sign_extend (val, bits) | |
109 | unsigned val, bits; | |
110 | { | |
111 | return (int)(val >> bits - 1 ? (-1 << bits) | val : val); | |
112 | } | |
113 | ||
114 | /* For many immediate values the sign bit is the low bit! */ | |
115 | ||
116 | int | |
117 | low_sign_extend (val, bits) | |
118 | unsigned val, bits; | |
119 | { | |
120 | return (int)((val & 0x1 ? (-1 << (bits - 1)) : 0) | val >> 1); | |
121 | } | |
122 | /* extract the immediate field from a ld{bhw}s instruction */ | |
123 | ||
124 | ||
125 | ||
126 | unsigned | |
127 | get_field (val, from, to) | |
128 | unsigned val, from, to; | |
129 | { | |
130 | val = val >> 31 - to; | |
131 | return val & ((1 << 32 - from) - 1); | |
132 | } | |
133 | ||
134 | unsigned | |
135 | set_field (val, from, to, new_val) | |
136 | unsigned *val, from, to; | |
137 | { | |
138 | unsigned mask = ~((1 << (to - from + 1)) << (31 - from)); | |
139 | return *val = *val & mask | (new_val << (31 - from)); | |
140 | } | |
141 | ||
142 | /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */ | |
143 | ||
144 | extract_3 (word) | |
145 | unsigned word; | |
146 | { | |
147 | return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17); | |
148 | } | |
149 | ||
150 | extract_5_load (word) | |
151 | unsigned word; | |
152 | { | |
153 | return low_sign_extend (word >> 16 & MASK_5, 5); | |
154 | } | |
155 | ||
156 | /* extract the immediate field from a st{bhw}s instruction */ | |
157 | ||
158 | int | |
159 | extract_5_store (word) | |
160 | unsigned word; | |
161 | { | |
162 | return low_sign_extend (word & MASK_5, 5); | |
163 | } | |
164 | ||
165 | /* extract an 11 bit immediate field */ | |
166 | ||
167 | int | |
168 | extract_11 (word) | |
169 | unsigned word; | |
170 | { | |
171 | return low_sign_extend (word & MASK_11, 11); | |
172 | } | |
173 | ||
174 | /* extract a 14 bit immediate field */ | |
175 | ||
176 | int | |
177 | extract_14 (word) | |
178 | unsigned word; | |
179 | { | |
180 | return low_sign_extend (word & MASK_14, 14); | |
181 | } | |
182 | ||
183 | /* deposit a 14 bit constant in a word */ | |
184 | ||
185 | unsigned | |
186 | deposit_14 (opnd, word) | |
187 | int opnd; | |
188 | unsigned word; | |
189 | { | |
190 | unsigned sign = (opnd < 0 ? 1 : 0); | |
191 | ||
192 | return word | ((unsigned)opnd << 1 & MASK_14) | sign; | |
193 | } | |
194 | ||
195 | /* extract a 21 bit constant */ | |
196 | ||
197 | int | |
198 | extract_21 (word) | |
199 | unsigned word; | |
200 | { | |
201 | int val; | |
202 | ||
203 | word &= MASK_21; | |
204 | word <<= 11; | |
205 | val = GET_FIELD (word, 20, 20); | |
206 | val <<= 11; | |
207 | val |= GET_FIELD (word, 9, 19); | |
208 | val <<= 2; | |
209 | val |= GET_FIELD (word, 5, 6); | |
210 | val <<= 5; | |
211 | val |= GET_FIELD (word, 0, 4); | |
212 | val <<= 2; | |
213 | val |= GET_FIELD (word, 7, 8); | |
214 | return sign_extend (val, 21) << 11; | |
215 | } | |
216 | ||
217 | /* deposit a 21 bit constant in a word. Although 21 bit constants are | |
218 | usually the top 21 bits of a 32 bit constant, we assume that only | |
219 | the low 21 bits of opnd are relevant */ | |
220 | ||
221 | unsigned | |
222 | deposit_21 (opnd, word) | |
223 | unsigned opnd, word; | |
224 | { | |
225 | unsigned val = 0; | |
226 | ||
227 | val |= GET_FIELD (opnd, 11 + 14, 11 + 18); | |
228 | val <<= 2; | |
229 | val |= GET_FIELD (opnd, 11 + 12, 11 + 13); | |
230 | val <<= 2; | |
231 | val |= GET_FIELD (opnd, 11 + 19, 11 + 20); | |
232 | val <<= 11; | |
233 | val |= GET_FIELD (opnd, 11 + 1, 11 + 11); | |
234 | val <<= 1; | |
235 | val |= GET_FIELD (opnd, 11 + 0, 11 + 0); | |
236 | return word | val; | |
237 | } | |
238 | ||
239 | /* extract a 12 bit constant from branch instructions */ | |
240 | ||
241 | int | |
242 | extract_12 (word) | |
243 | unsigned word; | |
244 | { | |
245 | return sign_extend (GET_FIELD (word, 19, 28) | | |
246 | GET_FIELD (word, 29, 29) << 10 | | |
247 | (word & 0x1) << 11, 12) << 2; | |
248 | } | |
249 | ||
250 | /* extract a 17 bit constant from branch instructions, returning the | |
251 | 19 bit signed value. */ | |
252 | ||
253 | int | |
254 | extract_17 (word) | |
255 | unsigned word; | |
256 | { | |
257 | return sign_extend (GET_FIELD (word, 19, 28) | | |
258 | GET_FIELD (word, 29, 29) << 10 | | |
259 | GET_FIELD (word, 11, 15) << 11 | | |
260 | (word & 0x1) << 16, 17) << 2; | |
261 | } | |
9f739abd | 262 | \f |
fb1415ae JG |
263 | CORE_ADDR |
264 | frame_saved_pc (frame) | |
265 | FRAME frame; | |
266 | { | |
267 | if (get_current_frame () == frame) | |
268 | { | |
269 | struct frame_saved_regs saved_regs; | |
270 | CORE_ADDR pc = get_frame_pc (frame); | |
9f739abd | 271 | int flags; |
fb1415ae | 272 | |
9f739abd | 273 | flags = read_register (FLAGS_REGNUM); |
fb1415ae | 274 | get_frame_saved_regs (frame, &saved_regs); |
9f739abd SG |
275 | if (pc >= millicode_start && pc < millicode_end |
276 | || (flags & 2)) /* In system call? */ | |
277 | return read_register (31) & ~3; | |
fb1415ae | 278 | else if (saved_regs.regs[RP_REGNUM]) |
9f739abd | 279 | return read_memory_integer (saved_regs.regs[RP_REGNUM], 4) & ~3; |
fb1415ae | 280 | else |
9f739abd | 281 | return read_register (RP_REGNUM) & ~3; |
fb1415ae JG |
282 | } |
283 | return read_memory_integer (frame->frame - 20, 4) & ~0x3; | |
284 | } | |
285 | ||
fb1415ae JG |
286 | /* To see if a frame chain is valid, see if the caller looks like it |
287 | was compiled with gcc. */ | |
288 | ||
289 | int frame_chain_valid (chain, thisframe) | |
290 | FRAME_ADDR chain; | |
291 | FRAME thisframe; | |
292 | { | |
9f739abd | 293 | if (chain && (chain > 0x60000000)) |
fb1415ae JG |
294 | { |
295 | CORE_ADDR pc = get_pc_function_start (FRAME_SAVED_PC (thisframe)); | |
296 | ||
01d1590b | 297 | if (inside_entry_file (pc)) |
fb1415ae JG |
298 | return 0; |
299 | /* look for stw rp, -20(0,sp); copy 4,1; copy sp, 4 */ | |
300 | if (read_memory_integer (pc, 4) == 0x6BC23FD9) | |
301 | pc = pc + 4; | |
302 | ||
303 | if (read_memory_integer (pc, 4) == 0x8040241 && | |
304 | read_memory_integer (pc + 4, 4) == 0x81E0244) | |
305 | return 1; | |
306 | else | |
307 | return 0; | |
308 | } | |
309 | else | |
310 | return 0; | |
311 | } | |
312 | ||
313 | /* Some helper functions. gcc_p returns 1 if the function beginning at | |
314 | pc appears to have been compiled with gcc. hpux_cc_p returns 1 if | |
315 | fn was compiled with hpux cc. gcc functions look like : | |
316 | ||
317 | stw rp,-0x14(sp) ; optional | |
318 | or r4,r0,r1 | |
319 | or sp,r0,r4 | |
320 | stwm r1,framesize(sp) | |
321 | ||
322 | hpux cc functions look like: | |
323 | ||
324 | stw rp,-0x14(sp) ; optional. | |
325 | stwm r3,framesiz(sp) | |
326 | */ | |
327 | ||
328 | gcc_p (pc) | |
329 | CORE_ADDR pc; | |
330 | { | |
331 | if (read_memory_integer (pc, 4) == 0x6BC23FD9) | |
332 | pc = pc + 4; | |
333 | ||
334 | if (read_memory_integer (pc, 4) == 0x8040241 && | |
335 | read_memory_integer (pc + 4, 4) == 0x81E0244) | |
336 | return 1; | |
337 | return 0; | |
338 | } | |
339 | ||
9f739abd SG |
340 | /* |
341 | * These functions deal with saving and restoring register state | |
342 | * around a function call in the inferior. They keep the stack | |
343 | * double-word aligned; eventually, on an hp700, the stack will have | |
344 | * to be aligned to a 64-byte boundary. | |
345 | */ | |
346 | ||
347 | int | |
348 | push_dummy_frame () | |
349 | { | |
350 | register CORE_ADDR sp = read_register (SP_REGNUM); | |
351 | register int regnum; | |
352 | int int_buffer; | |
353 | double freg_buffer; | |
354 | /* Space for "arguments"; the RP goes in here. */ | |
355 | sp += 48; | |
356 | int_buffer = read_register (RP_REGNUM) | 0x3; | |
357 | write_memory (sp - 20, (char *)&int_buffer, 4); | |
358 | int_buffer = read_register (FP_REGNUM); | |
359 | write_memory (sp, (char *)&int_buffer, 4); | |
360 | write_register (FP_REGNUM, sp); | |
361 | sp += 8; | |
362 | for (regnum = 1; regnum < 32; regnum++) | |
363 | if (regnum != RP_REGNUM && regnum != FP_REGNUM) | |
364 | sp = push_word (sp, read_register (regnum)); | |
365 | sp += 4; | |
366 | for (regnum = FP0_REGNUM; regnum < NUM_REGS; regnum++) | |
367 | { read_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8); | |
368 | sp = push_bytes (sp, (char *)&freg_buffer, 8);} | |
369 | sp = push_word (sp, read_register (IPSW_REGNUM)); | |
370 | sp = push_word (sp, read_register (SAR_REGNUM)); | |
371 | sp = push_word (sp, read_register (PCOQ_HEAD_REGNUM)); | |
372 | sp = push_word (sp, read_register (PCSQ_HEAD_REGNUM)); | |
373 | sp = push_word (sp, read_register (PCOQ_TAIL_REGNUM)); | |
374 | sp = push_word (sp, read_register (PCSQ_TAIL_REGNUM)); | |
375 | write_register (SP_REGNUM, sp); | |
376 | } | |
377 | ||
fb1415ae JG |
378 | find_dummy_frame_regs (frame, frame_saved_regs) |
379 | struct frame_info *frame; | |
380 | struct frame_saved_regs *frame_saved_regs; | |
381 | { | |
382 | CORE_ADDR fp = frame->frame; | |
383 | int i; | |
9f739abd | 384 | |
fb1415ae JG |
385 | frame_saved_regs->regs[RP_REGNUM] = fp - 20 & ~0x3; |
386 | frame_saved_regs->regs[FP_REGNUM] = fp; | |
387 | frame_saved_regs->regs[1] = fp + 8; | |
388 | frame_saved_regs->regs[3] = fp + 12; | |
9f739abd | 389 | for (fp += 16, i = 5; i < 32; fp += 4, i++) |
fb1415ae | 390 | frame_saved_regs->regs[i] = fp; |
fb1415ae JG |
391 | fp += 4; |
392 | for (i = FP0_REGNUM; i < NUM_REGS; i++, fp += 8) | |
393 | frame_saved_regs->regs[i] = fp; | |
9f739abd SG |
394 | frame_saved_regs->regs[IPSW_REGNUM] = fp; fp += 4; |
395 | frame_saved_regs->regs[SAR_REGNUM] = fp; fp += 4; | |
396 | frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp; fp +=4; | |
397 | frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp; fp +=4; | |
398 | frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp; fp +=4; | |
fb1415ae JG |
399 | frame_saved_regs->regs[PCSQ_TAIL_REGNUM] = fp; |
400 | } | |
401 | ||
9f739abd SG |
402 | int |
403 | hp_pop_frame () | |
404 | { | |
405 | register FRAME frame = get_current_frame (); | |
406 | register CORE_ADDR fp; | |
407 | register int regnum; | |
408 | struct frame_saved_regs fsr; | |
409 | struct frame_info *fi; | |
410 | double freg_buffer; | |
411 | fi = get_frame_info (frame); | |
412 | fp = fi->frame; | |
413 | get_frame_saved_regs (fi, &fsr); | |
414 | if (fsr.regs[IPSW_REGNUM]) /* Restoring a call dummy frame */ | |
415 | hp_restore_pc_queue (&fsr); | |
416 | for (regnum = 31; regnum > 0; regnum--) | |
417 | if (fsr.regs[regnum]) | |
418 | write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); | |
419 | for (regnum = NUM_REGS - 1; regnum >= FP0_REGNUM ; regnum--) | |
420 | if (fsr.regs[regnum]) | |
421 | { read_memory (fsr.regs[regnum], (char *)&freg_buffer, 8); | |
422 | write_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8); | |
423 | } | |
424 | if (fsr.regs[IPSW_REGNUM]) | |
425 | write_register (IPSW_REGNUM, | |
426 | read_memory_integer (fsr.regs[IPSW_REGNUM], 4)); | |
427 | if (fsr.regs[SAR_REGNUM]) | |
428 | write_register (SAR_REGNUM, | |
429 | read_memory_integer (fsr.regs[SAR_REGNUM], 4)); | |
430 | if (fsr.regs[PCOQ_TAIL_REGNUM]) | |
431 | write_register (PCOQ_TAIL_REGNUM, | |
432 | read_memory_integer (fsr.regs[PCOQ_TAIL_REGNUM], 4)); | |
433 | write_register (FP_REGNUM, read_memory_integer (fp, 4)); | |
434 | if (fsr.regs[IPSW_REGNUM]) /* call dummy */ | |
435 | write_register (SP_REGNUM, fp - 48); | |
436 | else | |
437 | write_register (SP_REGNUM, fp); | |
438 | flush_cached_frames (); | |
439 | set_current_frame (create_new_frame (read_register (FP_REGNUM), | |
440 | read_pc ())); | |
441 | } | |
442 | ||
443 | /* | |
444 | * After returning to a dummy on the stack, restore the instruction | |
445 | * queue space registers. */ | |
446 | ||
447 | int | |
448 | hp_restore_pc_queue (fsr) | |
449 | struct frame_saved_regs *fsr; | |
450 | { | |
451 | CORE_ADDR pc = read_pc (); | |
452 | CORE_ADDR new_pc = read_memory_integer (fsr->regs[PCOQ_HEAD_REGNUM], 4); | |
453 | int pid; | |
454 | WAITTYPE w; | |
455 | int insn_count; | |
456 | ||
457 | /* Advance past break instruction in the call dummy. */ | |
458 | pc += 4; write_register (PCOQ_HEAD_REGNUM, pc); | |
459 | pc += 4; write_register (PCOQ_TAIL_REGNUM, pc); | |
460 | ||
461 | /* | |
462 | * HPUX doesn't let us set the space registers or the space | |
463 | * registers of the PC queue through ptrace. Boo, hiss. | |
464 | * Conveniently, the call dummy has this sequence of instructions | |
465 | * after the break: | |
466 | * mtsp r21, sr0 | |
467 | * ble,n 0(sr0, r22) | |
468 | * | |
469 | * So, load up the registers and single step until we are in the | |
470 | * right place. | |
471 | */ | |
472 | ||
473 | write_register (21, read_memory_integer (fsr->regs[PCSQ_HEAD_REGNUM], 4)); | |
474 | write_register (22, new_pc); | |
475 | ||
476 | for (insn_count = 0; insn_count < 3; insn_count++) | |
477 | { | |
478 | resume (1, 0); | |
479 | target_wait(&w); | |
480 | ||
481 | if (!WIFSTOPPED (w)) | |
482 | { | |
483 | stop_signal = WTERMSIG (w); | |
484 | terminal_ours_for_output (); | |
485 | printf ("\nProgram terminated with signal %d, %s\n", | |
486 | stop_signal, safe_strsignal (stop_signal)); | |
487 | fflush (stdout); | |
488 | return 0; | |
489 | } | |
490 | } | |
491 | fetch_inferior_registers (-1); | |
492 | return 1; | |
493 | } | |
494 | ||
fb1415ae JG |
495 | CORE_ADDR |
496 | hp_push_arguments (nargs, args, sp, struct_return, struct_addr) | |
497 | int nargs; | |
498 | value *args; | |
499 | CORE_ADDR sp; | |
500 | int struct_return; | |
501 | CORE_ADDR struct_addr; | |
502 | { | |
503 | /* array of arguments' offsets */ | |
504 | int *offset = (int *)alloca(nargs); | |
505 | int cum = 0; | |
506 | int i, alignment; | |
507 | ||
508 | for (i = 0; i < nargs; i++) | |
509 | { | |
510 | cum += TYPE_LENGTH (VALUE_TYPE (args[i])); | |
511 | /* value must go at proper alignment. Assume alignment is a | |
512 | power of two.*/ | |
513 | alignment = hp_alignof (VALUE_TYPE (args[i])); | |
514 | if (cum % alignment) | |
515 | cum = (cum + alignment) & -alignment; | |
516 | offset[i] = -cum; | |
517 | } | |
9f739abd SG |
518 | sp += min ((cum + 7) & -8, 16); |
519 | for (i = 0; i < nargs; i++) | |
fb1415ae | 520 | { |
9f739abd SG |
521 | write_memory (sp + offset[i], VALUE_CONTENTS (args[i]), |
522 | TYPE_LENGTH (VALUE_TYPE (args[i]))); | |
fb1415ae | 523 | } |
fb1415ae JG |
524 | if (struct_return) |
525 | write_register (28, struct_addr); | |
9f739abd | 526 | return sp + 32; |
fb1415ae JG |
527 | } |
528 | ||
529 | /* return the alignment of a type in bytes. Structures have the maximum | |
530 | alignment required by their fields. */ | |
531 | ||
532 | int | |
533 | hp_alignof (arg) | |
534 | struct type *arg; | |
535 | { | |
536 | int max_align, align, i; | |
537 | switch (TYPE_CODE (arg)) | |
538 | { | |
539 | case TYPE_CODE_PTR: | |
540 | case TYPE_CODE_INT: | |
541 | case TYPE_CODE_FLT: | |
542 | return TYPE_LENGTH (arg); | |
543 | case TYPE_CODE_ARRAY: | |
544 | return hp_alignof (TYPE_FIELD_TYPE (arg, 0)); | |
545 | case TYPE_CODE_STRUCT: | |
546 | case TYPE_CODE_UNION: | |
547 | max_align = 2; | |
548 | for (i = 0; i < TYPE_NFIELDS (arg); i++) | |
549 | { | |
550 | /* Bit fields have no real alignment. */ | |
551 | if (!TYPE_FIELD_BITPOS (arg, i)) | |
552 | { | |
553 | align = hp_alignof (TYPE_FIELD_TYPE (arg, i)); | |
554 | max_align = max (max_align, align); | |
555 | } | |
556 | } | |
557 | return max_align; | |
558 | default: | |
559 | return 4; | |
560 | } | |
561 | } | |
562 | ||
563 | /* Print the register regnum, or all registers if regnum is -1 */ | |
564 | ||
565 | pa_do_registers_info (regnum, fpregs) | |
566 | int regnum; | |
567 | int fpregs; | |
568 | { | |
569 | char raw_regs [REGISTER_BYTES]; | |
570 | int i; | |
571 | ||
572 | for (i = 0; i < NUM_REGS; i++) | |
573 | read_relative_register_raw_bytes (i, raw_regs + REGISTER_BYTE (i)); | |
9f739abd SG |
574 | if (regnum == -1) |
575 | pa_print_registers (raw_regs, regnum, fpregs); | |
fb1415ae JG |
576 | else if (regnum < FP0_REGNUM) |
577 | { | |
578 | printf ("%s %x\n", reg_names[regnum], *(long *)(raw_regs + | |
579 | REGISTER_BYTE (regnum))); | |
580 | } | |
581 | else | |
582 | pa_print_fp_reg (regnum); | |
583 | } | |
584 | ||
9f739abd | 585 | pa_print_registers (raw_regs, regnum, fpregs) |
fb1415ae JG |
586 | char *raw_regs; |
587 | int regnum; | |
9f739abd | 588 | int fpregs; |
fb1415ae JG |
589 | { |
590 | int i; | |
591 | ||
592 | for (i = 0; i < 18; i++) | |
593 | printf ("%8.8s: %8x %8.8s: %8x %8.8s: %8x %8.8s: %8x\n", | |
594 | reg_names[i], | |
595 | *(int *)(raw_regs + REGISTER_BYTE (i)), | |
596 | reg_names[i + 18], | |
597 | *(int *)(raw_regs + REGISTER_BYTE (i + 18)), | |
598 | reg_names[i + 36], | |
599 | *(int *)(raw_regs + REGISTER_BYTE (i + 36)), | |
600 | reg_names[i + 54], | |
601 | *(int *)(raw_regs + REGISTER_BYTE (i + 54))); | |
9f739abd SG |
602 | |
603 | if (fpregs) | |
604 | for (i = 72; i < NUM_REGS; i++) | |
605 | pa_print_fp_reg (i); | |
fb1415ae JG |
606 | } |
607 | ||
608 | pa_print_fp_reg (i) | |
609 | int i; | |
610 | { | |
611 | unsigned char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
612 | unsigned char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; | |
613 | REGISTER_TYPE val; | |
614 | ||
615 | /* Get the data in raw format, then convert also to virtual format. */ | |
616 | read_relative_register_raw_bytes (i, raw_buffer); | |
617 | REGISTER_CONVERT_TO_VIRTUAL (i, raw_buffer, virtual_buffer); | |
618 | ||
619 | fputs_filtered (reg_names[i], stdout); | |
620 | print_spaces_filtered (15 - strlen (reg_names[i]), stdout); | |
621 | ||
622 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, stdout, 0, | |
623 | 1, 0, Val_pretty_default); | |
624 | printf_filtered ("\n"); | |
625 | ||
626 | } | |
627 | ||
9f739abd SG |
628 | /* Function calls that pass into a new compilation unit must pass through a |
629 | small piece of code that does long format (`external' in HPPA parlance) | |
630 | jumps. We figure out where the trampoline is going to end up, and return | |
631 | the PC of the final destination. If we aren't in a trampoline, we just | |
632 | return NULL. */ | |
fb1415ae | 633 | |
9f739abd SG |
634 | CORE_ADDR |
635 | skip_trampoline_code (pc) | |
636 | CORE_ADDR pc; | |
fb1415ae | 637 | { |
9f739abd | 638 | long inst0, inst1; |
fb1415ae | 639 | |
9f739abd SG |
640 | inst0 = read_memory_integer (pc, 4); |
641 | inst1 = read_memory_integer (pc+4, 4); | |
fb1415ae | 642 | |
9f739abd SG |
643 | if ( (inst0 & 0xffe00000) == 0x20200000 /* ldil xxx, r1 */ |
644 | && (inst1 & 0xffe0e002) == 0xe0202002) /* be,n yyy(sr4, r1) */ | |
645 | pc = extract_21 (inst0) + extract_17 (inst1); | |
646 | else | |
647 | pc = NULL; | |
fb1415ae | 648 | |
9f739abd | 649 | return pc; |
fb1415ae | 650 | } |