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import gdb-1999-11-08 snapshot
[deliverable/binutils-gdb.git] / gdb / d30v-tdep.c
1 /* Target-dependent code for Mitsubishi D30V, for GDB.
2 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
3
4 This file is part of GDB.
5
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.
10
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.
15
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., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Contributed by Martin Hunt, hunt@cygnus.com */
22
23 #include "defs.h"
24 #include "frame.h"
25 #include "obstack.h"
26 #include "symtab.h"
27 #include "gdbtypes.h"
28 #include "gdbcmd.h"
29 #include "gdbcore.h"
30 #include "gdb_string.h"
31 #include "value.h"
32 #include "inferior.h"
33 #include "dis-asm.h"
34 #include "symfile.h"
35 #include "objfiles.h"
36
37 #include "language.h" /* For local_hex_string() */
38
39 void d30v_frame_find_saved_regs PARAMS ((struct frame_info * fi,
40 struct frame_saved_regs * fsr));
41 void d30v_frame_find_saved_regs_offsets PARAMS ((struct frame_info * fi,
42 struct frame_saved_regs * fsr));
43 static void d30v_pop_dummy_frame PARAMS ((struct frame_info * fi));
44 static void d30v_print_flags PARAMS ((void));
45 static void print_flags_command PARAMS ((char *, int));
46
47 /* the following defines assume:
48 fp is r61, lr is r62, sp is r63, and ?? is r22
49 if that changes, they will need to be updated */
50
51 #define OP_MASK_ALL_BUT_RA 0x0ffc0fff /* throw away Ra, keep the rest */
52
53 #define OP_STW_SPM 0x054c0fc0 /* stw Ra, @(sp-) */
54 #define OP_STW_SP_R0 0x05400fc0 /* stw Ra, @(sp,r0) */
55 #define OP_STW_SP_IMM0 0x05480fc0 /* st Ra, @(sp, 0x0) */
56 #define OP_STW_R22P_R0 0x05440580 /* stw Ra, @(r22+,r0) */
57
58 #define OP_ST2W_SPM 0x056c0fc0 /* st2w Ra, @(sp-) */
59 #define OP_ST2W_SP_R0 0x05600fc0 /* st2w Ra, @(sp, r0) */
60 #define OP_ST2W_SP_IMM0 0x05680fc0 /* st2w Ra, @(sp, 0x0) */
61 #define OP_ST2W_R22P_R0 0x05640580 /* st2w Ra, @(r22+, r0) */
62
63 #define OP_MASK_OPCODE 0x0ffc0000 /* just the opcode, ign operands */
64 #define OP_NOP 0x00f00000 /* nop */
65
66 #define OP_MASK_ALL_BUT_IMM 0x0fffffc0 /* throw away imm, keep the rest */
67 #define OP_SUB_SP_IMM 0x082bffc0 /* sub sp,sp,imm */
68 #define OP_ADD_SP_IMM 0x080bffc0 /* add sp,sp,imm */
69 #define OP_ADD_R22_SP_IMM 0x08096fc0 /* add r22,sp,imm */
70 #define OP_STW_FP_SP_IMM 0x054bdfc0 /* stw fp,@(sp,imm) */
71 #define OP_OR_SP_R0_IMM 0x03abf000 /* or sp,r0,imm */
72
73 /* no mask */
74 #define OP_OR_FP_R0_SP 0x03a3d03f /* or fp,r0,sp */
75 #define OP_OR_FP_SP_R0 0x03a3dfc0 /* or fp,sp,r0 */
76 #define OP_OR_FP_IMM0_SP 0x03abd03f /* or fp,0x0,sp */
77 #define OP_STW_FP_R22P_R0 0x0547d580 /* stw fp,@(r22+,r0) */
78 #define OP_STW_LR_R22P_R0 0x0547e580 /* stw lr,@(r22+,r0) */
79
80 #define OP_MASK_OP_AND_RB 0x0ff80fc0 /* keep op and rb,throw away rest */
81 #define OP_STW_SP_IMM 0x05480fc0 /* stw Ra,@(sp,imm) */
82 #define OP_ST2W_SP_IMM 0x05680fc0 /* st2w Ra,@(sp,imm) */
83 #define OP_STW_FP_IMM 0x05480f40 /* stw Ra,@(fp,imm) */
84 #define OP_STW_FP_R0 0x05400f40 /* stw Ra,@(fp,r0) */
85
86 #define OP_MASK_FM_BIT 0x80000000
87 #define OP_MASK_CC_BITS 0x70000000
88 #define OP_MASK_SUB_INST 0x0fffffff
89
90 #define EXTRACT_RA(op) (((op) >> 12) & 0x3f)
91 #define EXTRACT_RB(op) (((op) >> 6) & 0x3f)
92 #define EXTRACT_RC(op) (((op) & 0x3f)
93 #define EXTRACT_UIMM6(op) ((op) & 0x3f)
94 #define EXTRACT_IMM6(op) ((((int)EXTRACT_UIMM6(op)) << 26) >> 26)
95 #define EXTRACT_IMM26(op) ((((op)&0x0ff00000) >> 2) | ((op)&0x0003ffff))
96 #define EXTRACT_IMM32(opl, opr) ((EXTRACT_UIMM6(opl) << 26)|EXTRACT_IMM26(opr))
97
98
99 int
100 d30v_frame_chain_valid (chain, fi)
101 CORE_ADDR chain;
102 struct frame_info *fi; /* not used here */
103 {
104 #if 0
105 return ((chain) != 0 && (fi) != 0 && (fi)->return_pc != 0);
106 #else
107 return ((chain) != 0 && (fi) != 0 && (fi)->frame <= chain);
108 #endif
109 }
110
111 /* Discard from the stack the innermost frame, restoring all saved
112 registers. */
113
114 void
115 d30v_pop_frame ()
116 {
117 struct frame_info *frame = get_current_frame ();
118 CORE_ADDR fp;
119 int regnum;
120 struct frame_saved_regs fsr;
121 char raw_buffer[8];
122
123 fp = FRAME_FP (frame);
124 if (frame->dummy)
125 {
126 d30v_pop_dummy_frame (frame);
127 return;
128 }
129
130 /* fill out fsr with the address of where each */
131 /* register was stored in the frame */
132 get_frame_saved_regs (frame, &fsr);
133
134 /* now update the current registers with the old values */
135 for (regnum = A0_REGNUM; regnum < A0_REGNUM + 2; regnum++)
136 {
137 if (fsr.regs[regnum])
138 {
139 read_memory (fsr.regs[regnum], raw_buffer, 8);
140 write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 8);
141 }
142 }
143 for (regnum = 0; regnum < SP_REGNUM; regnum++)
144 {
145 if (fsr.regs[regnum])
146 {
147 write_register (regnum, read_memory_unsigned_integer (fsr.regs[regnum], 4));
148 }
149 }
150 if (fsr.regs[PSW_REGNUM])
151 {
152 write_register (PSW_REGNUM, read_memory_unsigned_integer (fsr.regs[PSW_REGNUM], 4));
153 }
154
155 write_register (PC_REGNUM, read_register (LR_REGNUM));
156 write_register (SP_REGNUM, fp + frame->size);
157 target_store_registers (-1);
158 flush_cached_frames ();
159 }
160
161 static int
162 check_prologue (op)
163 unsigned long op;
164 {
165 /* add sp,sp,imm -- observed */
166 if ((op & OP_MASK_ALL_BUT_IMM) == OP_ADD_SP_IMM)
167 return 1;
168
169 /* add r22,sp,imm -- observed */
170 if ((op & OP_MASK_ALL_BUT_IMM) == OP_ADD_R22_SP_IMM)
171 return 1;
172
173 /* or fp,r0,sp -- observed */
174 if (op == OP_OR_FP_R0_SP)
175 return 1;
176
177 /* nop */
178 if ((op & OP_MASK_OPCODE) == OP_NOP)
179 return 1;
180
181 /* stw Ra,@(sp,r0) */
182 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_SP_R0)
183 return 1;
184
185 /* stw Ra,@(sp,0x0) */
186 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_SP_IMM0)
187 return 1;
188
189 /* st2w Ra,@(sp,r0) */
190 if ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_SP_R0)
191 return 1;
192
193 /* st2w Ra,@(sp,0x0) */
194 if ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_SP_IMM0)
195 return 1;
196
197 /* stw fp, @(r22+,r0) -- observed */
198 if (op == OP_STW_FP_R22P_R0)
199 return 1;
200
201 /* stw r62, @(r22+,r0) -- observed */
202 if (op == OP_STW_LR_R22P_R0)
203 return 1;
204
205 /* stw Ra, @(fp,r0) -- observed */
206 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_FP_R0)
207 return 1; /* first arg */
208
209 /* stw Ra, @(fp,imm) -- observed */
210 if ((op & OP_MASK_OP_AND_RB) == OP_STW_FP_IMM)
211 return 1; /* second and subsequent args */
212
213 /* stw fp,@(sp,imm) -- observed */
214 if ((op & OP_MASK_ALL_BUT_IMM) == OP_STW_FP_SP_IMM)
215 return 1;
216
217 /* st2w Ra,@(r22+,r0) */
218 if ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_R22P_R0)
219 return 1;
220
221 /* stw Ra, @(sp-) */
222 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_SPM)
223 return 1;
224
225 /* st2w Ra, @(sp-) */
226 if ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_SPM)
227 return 1;
228
229 /* sub.? sp,sp,imm */
230 if ((op & OP_MASK_ALL_BUT_IMM) == OP_SUB_SP_IMM)
231 return 1;
232
233 return 0;
234 }
235
236 CORE_ADDR
237 d30v_skip_prologue (pc)
238 CORE_ADDR pc;
239 {
240 unsigned long op[2];
241 unsigned long opl, opr; /* left / right sub operations */
242 unsigned long fm0, fm1; /* left / right mode bits */
243 unsigned long cc0, cc1;
244 unsigned long op1, op2;
245 CORE_ADDR func_addr, func_end;
246 struct symtab_and_line sal;
247
248 /* If we have line debugging information, then the end of the */
249 /* prologue should the first assembly instruction of the first source line */
250 if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
251 {
252 sal = find_pc_line (func_addr, 0);
253 if (sal.end && sal.end < func_end)
254 return sal.end;
255 }
256
257 if (target_read_memory (pc, (char *) &op[0], 8))
258 return pc; /* Can't access it -- assume no prologue. */
259
260 while (1)
261 {
262 opl = (unsigned long) read_memory_integer (pc, 4);
263 opr = (unsigned long) read_memory_integer (pc + 4, 4);
264
265 fm0 = (opl & OP_MASK_FM_BIT);
266 fm1 = (opr & OP_MASK_FM_BIT);
267
268 cc0 = (opl & OP_MASK_CC_BITS);
269 cc1 = (opr & OP_MASK_CC_BITS);
270
271 opl = (opl & OP_MASK_SUB_INST);
272 opr = (opr & OP_MASK_SUB_INST);
273
274 if (fm0 && fm1)
275 {
276 /* long instruction (opl contains the opcode) */
277 if (((opl & OP_MASK_ALL_BUT_IMM) != OP_ADD_SP_IMM) && /* add sp,sp,imm */
278 ((opl & OP_MASK_ALL_BUT_IMM) != OP_ADD_R22_SP_IMM) && /* add r22,sp,imm */
279 ((opl & OP_MASK_OP_AND_RB) != OP_STW_SP_IMM) && /* stw Ra, @(sp,imm) */
280 ((opl & OP_MASK_OP_AND_RB) != OP_ST2W_SP_IMM)) /* st2w Ra, @(sp,imm) */
281 break;
282 }
283 else
284 {
285 /* short instructions */
286 if (fm0 && !fm1)
287 {
288 op1 = opr;
289 op2 = opl;
290 }
291 else
292 {
293 op1 = opl;
294 op2 = opr;
295 }
296 if (check_prologue (op1))
297 {
298 if (!check_prologue (op2))
299 {
300 /* if the previous opcode was really part of the prologue */
301 /* and not just a NOP, then we want to break after both instructions */
302 if ((op1 & OP_MASK_OPCODE) != OP_NOP)
303 pc += 8;
304 break;
305 }
306 }
307 else
308 break;
309 }
310 pc += 8;
311 }
312 return pc;
313 }
314
315 static int end_of_stack;
316
317 /* Given a GDB frame, determine the address of the calling function's frame.
318 This will be used to create a new GDB frame struct, and then
319 INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
320 */
321
322 CORE_ADDR
323 d30v_frame_chain (frame)
324 struct frame_info *frame;
325 {
326 struct frame_saved_regs fsr;
327
328 d30v_frame_find_saved_regs (frame, &fsr);
329
330 if (end_of_stack)
331 return (CORE_ADDR) 0;
332
333 if (frame->return_pc == IMEM_START)
334 return (CORE_ADDR) 0;
335
336 if (!fsr.regs[FP_REGNUM])
337 {
338 if (!fsr.regs[SP_REGNUM] || fsr.regs[SP_REGNUM] == STACK_START)
339 return (CORE_ADDR) 0;
340
341 return fsr.regs[SP_REGNUM];
342 }
343
344 if (!read_memory_unsigned_integer (fsr.regs[FP_REGNUM], 4))
345 return (CORE_ADDR) 0;
346
347 return read_memory_unsigned_integer (fsr.regs[FP_REGNUM], 4);
348 }
349
350 static int next_addr, uses_frame;
351 static int frame_size;
352
353 static int
354 prologue_find_regs (op, fsr, addr)
355 unsigned long op;
356 struct frame_saved_regs *fsr;
357 CORE_ADDR addr;
358 {
359 int n;
360 int offset;
361
362 /* add sp,sp,imm -- observed */
363 if ((op & OP_MASK_ALL_BUT_IMM) == OP_ADD_SP_IMM)
364 {
365 offset = EXTRACT_IMM6 (op);
366 /*next_addr += offset; */
367 frame_size += -offset;
368 return 1;
369 }
370
371 /* add r22,sp,imm -- observed */
372 if ((op & OP_MASK_ALL_BUT_IMM) == OP_ADD_R22_SP_IMM)
373 {
374 offset = EXTRACT_IMM6 (op);
375 next_addr = (offset - frame_size);
376 return 1;
377 }
378
379 /* stw Ra, @(fp, offset) -- observed */
380 if ((op & OP_MASK_OP_AND_RB) == OP_STW_FP_IMM)
381 {
382 n = EXTRACT_RA (op);
383 offset = EXTRACT_IMM6 (op);
384 fsr->regs[n] = (offset - frame_size);
385 return 1;
386 }
387
388 /* stw Ra, @(fp, r0) -- observed */
389 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_FP_R0)
390 {
391 n = EXTRACT_RA (op);
392 fsr->regs[n] = (-frame_size);
393 return 1;
394 }
395
396 /* or fp,0,sp -- observed */
397 if ((op == OP_OR_FP_R0_SP) ||
398 (op == OP_OR_FP_SP_R0) ||
399 (op == OP_OR_FP_IMM0_SP))
400 {
401 uses_frame = 1;
402 return 1;
403 }
404
405 /* nop */
406 if ((op & OP_MASK_OPCODE) == OP_NOP)
407 return 1;
408
409 /* stw Ra,@(r22+,r0) -- observed */
410 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_R22P_R0)
411 {
412 n = EXTRACT_RA (op);
413 fsr->regs[n] = next_addr;
414 next_addr += 4;
415 return 1;
416 }
417 #if 0 /* subsumed in pattern above */
418 /* stw fp,@(r22+,r0) -- observed */
419 if (op == OP_STW_FP_R22P_R0)
420 {
421 fsr->regs[FP_REGNUM] = next_addr; /* XXX */
422 next_addr += 4;
423 return 1;
424 }
425
426 /* stw r62,@(r22+,r0) -- observed */
427 if (op == OP_STW_LR_R22P_R0)
428 {
429 fsr->regs[LR_REGNUM] = next_addr;
430 next_addr += 4;
431 return 1;
432 }
433 #endif
434 /* st2w Ra,@(r22+,r0) -- observed */
435 if ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_R22P_R0)
436 {
437 n = EXTRACT_RA (op);
438 fsr->regs[n] = next_addr;
439 fsr->regs[n + 1] = next_addr + 4;
440 next_addr += 8;
441 return 1;
442 }
443
444 /* stw rn, @(sp-) */
445 if ((op & OP_MASK_ALL_BUT_RA) == OP_STW_SPM)
446 {
447 n = EXTRACT_RA (op);
448 fsr->regs[n] = next_addr;
449 next_addr -= 4;
450 return 1;
451 }
452
453 /* st2w Ra, @(sp-) */
454 else if ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_SPM)
455 {
456 n = EXTRACT_RA (op);
457 fsr->regs[n] = next_addr;
458 fsr->regs[n + 1] = next_addr + 4;
459 next_addr -= 8;
460 return 1;
461 }
462
463 /* sub sp,sp,imm */
464 if ((op & OP_MASK_ALL_BUT_IMM) == OP_SUB_SP_IMM)
465 {
466 offset = EXTRACT_IMM6 (op);
467 frame_size += -offset;
468 return 1;
469 }
470
471 /* st rn, @(sp,0) -- observed */
472 if (((op & OP_MASK_ALL_BUT_RA) == OP_STW_SP_R0) ||
473 ((op & OP_MASK_ALL_BUT_RA) == OP_STW_SP_IMM0))
474 {
475 n = EXTRACT_RA (op);
476 fsr->regs[n] = (-frame_size);
477 return 1;
478 }
479
480 /* st2w rn, @(sp,0) */
481 if (((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_SP_R0) ||
482 ((op & OP_MASK_ALL_BUT_RA) == OP_ST2W_SP_IMM0))
483 {
484 n = EXTRACT_RA (op);
485 fsr->regs[n] = (-frame_size);
486 fsr->regs[n + 1] = (-frame_size) + 4;
487 return 1;
488 }
489
490 /* stw fp,@(sp,imm) -- observed */
491 if ((op & OP_MASK_ALL_BUT_IMM) == OP_STW_FP_SP_IMM)
492 {
493 offset = EXTRACT_IMM6 (op);
494 fsr->regs[FP_REGNUM] = (offset - frame_size);
495 return 1;
496 }
497 return 0;
498 }
499
500 /* Put here the code to store, into a struct frame_saved_regs, the
501 addresses of the saved registers of frame described by FRAME_INFO.
502 This includes special registers such as pc and fp saved in special
503 ways in the stack frame. sp is even more special: the address we
504 return for it IS the sp for the next frame. */
505 void
506 d30v_frame_find_saved_regs (fi, fsr)
507 struct frame_info *fi;
508 struct frame_saved_regs *fsr;
509 {
510 CORE_ADDR fp, pc;
511 unsigned long opl, opr;
512 unsigned long op1, op2;
513 unsigned long fm0, fm1;
514 int i;
515
516 fp = fi->frame;
517 memset (fsr, 0, sizeof (*fsr));
518 next_addr = 0;
519 frame_size = 0;
520 end_of_stack = 0;
521
522 uses_frame = 0;
523
524 d30v_frame_find_saved_regs_offsets (fi, fsr);
525
526 fi->size = frame_size;
527
528 if (!fp)
529 fp = read_register (SP_REGNUM);
530
531 for (i = 0; i < NUM_REGS - 1; i++)
532 if (fsr->regs[i])
533 {
534 fsr->regs[i] = fsr->regs[i] + fp + frame_size;
535 }
536
537 if (fsr->regs[LR_REGNUM])
538 fi->return_pc = read_memory_unsigned_integer (fsr->regs[LR_REGNUM], 4);
539 else
540 fi->return_pc = read_register (LR_REGNUM);
541
542 /* the SP is not normally (ever?) saved, but check anyway */
543 if (!fsr->regs[SP_REGNUM])
544 {
545 /* if the FP was saved, that means the current FP is valid, */
546 /* otherwise, it isn't being used, so we use the SP instead */
547 if (uses_frame)
548 fsr->regs[SP_REGNUM] = read_register (FP_REGNUM) + fi->size;
549 else
550 {
551 fsr->regs[SP_REGNUM] = fp + fi->size;
552 fi->frameless = 1;
553 fsr->regs[FP_REGNUM] = 0;
554 }
555 }
556 }
557
558 void
559 d30v_frame_find_saved_regs_offsets (fi, fsr)
560 struct frame_info *fi;
561 struct frame_saved_regs *fsr;
562 {
563 CORE_ADDR fp, pc;
564 unsigned long opl, opr;
565 unsigned long op1, op2;
566 unsigned long fm0, fm1;
567 int i;
568
569 fp = fi->frame;
570 memset (fsr, 0, sizeof (*fsr));
571 next_addr = 0;
572 frame_size = 0;
573 end_of_stack = 0;
574
575 pc = get_pc_function_start (fi->pc);
576
577 uses_frame = 0;
578 while (pc < fi->pc)
579 {
580 opl = (unsigned long) read_memory_integer (pc, 4);
581 opr = (unsigned long) read_memory_integer (pc + 4, 4);
582
583 fm0 = (opl & OP_MASK_FM_BIT);
584 fm1 = (opr & OP_MASK_FM_BIT);
585
586 opl = (opl & OP_MASK_SUB_INST);
587 opr = (opr & OP_MASK_SUB_INST);
588
589 if (fm0 && fm1)
590 {
591 /* long instruction */
592 if ((opl & OP_MASK_ALL_BUT_IMM) == OP_ADD_SP_IMM)
593 {
594 /* add sp,sp,n */
595 long offset = EXTRACT_IMM32 (opl, opr);
596 frame_size += -offset;
597 }
598 else if ((opl & OP_MASK_ALL_BUT_IMM) == OP_ADD_R22_SP_IMM)
599 {
600 /* add r22,sp,offset */
601 long offset = EXTRACT_IMM32 (opl, opr);
602 next_addr = (offset - frame_size);
603 }
604 else if ((opl & OP_MASK_OP_AND_RB) == OP_STW_SP_IMM)
605 {
606 /* st Ra, @(sp,imm) */
607 long offset = EXTRACT_IMM32 (opl, opr);
608 short n = EXTRACT_RA (opl);
609 fsr->regs[n] = (offset - frame_size);
610 }
611 else if ((opl & OP_MASK_OP_AND_RB) == OP_ST2W_SP_IMM)
612 {
613 /* st2w Ra, @(sp,offset) */
614 long offset = EXTRACT_IMM32 (opl, opr);
615 short n = EXTRACT_RA (opl);
616 fsr->regs[n] = (offset - frame_size);
617 fsr->regs[n + 1] = (offset - frame_size) + 4;
618 }
619 else if ((opl & OP_MASK_ALL_BUT_IMM) == OP_OR_SP_R0_IMM)
620 {
621 end_of_stack = 1;
622 }
623 else
624 break;
625 }
626 else
627 {
628 /* short instructions */
629 if (fm0 && !fm1)
630 {
631 op2 = opl;
632 op1 = opr;
633 }
634 else
635 {
636 op1 = opl;
637 op2 = opr;
638 }
639 if (!prologue_find_regs (op1, fsr, pc) || !prologue_find_regs (op2, fsr, pc))
640 break;
641 }
642 pc += 8;
643 }
644
645 #if 0
646 fi->size = frame_size;
647
648 if (!fp)
649 fp = read_register (SP_REGNUM);
650
651 for (i = 0; i < NUM_REGS - 1; i++)
652 if (fsr->regs[i])
653 {
654 fsr->regs[i] = fsr->regs[i] + fp + frame_size;
655 }
656
657 if (fsr->regs[LR_REGNUM])
658 fi->return_pc = read_memory_unsigned_integer (fsr->regs[LR_REGNUM], 4);
659 else
660 fi->return_pc = read_register (LR_REGNUM);
661
662 /* the SP is not normally (ever?) saved, but check anyway */
663 if (!fsr->regs[SP_REGNUM])
664 {
665 /* if the FP was saved, that means the current FP is valid, */
666 /* otherwise, it isn't being used, so we use the SP instead */
667 if (uses_frame)
668 fsr->regs[SP_REGNUM] = read_register (FP_REGNUM) + fi->size;
669 else
670 {
671 fsr->regs[SP_REGNUM] = fp + fi->size;
672 fi->frameless = 1;
673 fsr->regs[FP_REGNUM] = 0;
674 }
675 }
676 #endif
677 }
678
679 void
680 d30v_init_extra_frame_info (fromleaf, fi)
681 int fromleaf;
682 struct frame_info *fi;
683 {
684 struct frame_saved_regs dummy;
685
686 if (fi->next && (fi->pc == 0))
687 fi->pc = fi->next->return_pc;
688
689 d30v_frame_find_saved_regs_offsets (fi, &dummy);
690
691 if (uses_frame == 0)
692 fi->frameless = 1;
693 else
694 fi->frameless = 0;
695
696 if ((fi->next == 0) && (uses_frame == 0))
697 /* innermost frame and it's "frameless",
698 so the fi->frame field is wrong, fix it! */
699 fi->frame = read_sp ();
700
701 if (dummy.regs[LR_REGNUM])
702 {
703 /* it was saved, grab it! */
704 dummy.regs[LR_REGNUM] += (fi->frame + frame_size);
705 fi->return_pc = read_memory_unsigned_integer (dummy.regs[LR_REGNUM], 4);
706 }
707 else
708 fi->return_pc = read_register (LR_REGNUM);
709 }
710
711 void
712 d30v_init_frame_pc (fromleaf, prev)
713 int fromleaf;
714 struct frame_info *prev;
715 {
716 /* default value, put here so we can breakpoint on it and
717 see if the default value is really the right thing to use */
718 prev->pc = (fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \
719 prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ());
720 }
721
722 static void d30v_print_register PARAMS ((int regnum, int tabular));
723
724 static void
725 d30v_print_register (regnum, tabular)
726 int regnum;
727 int tabular;
728 {
729 if (regnum < A0_REGNUM)
730 {
731 if (tabular)
732 printf_filtered ("%08lx", (long) read_register (regnum));
733 else
734 printf_filtered ("0x%lx %ld",
735 (long) read_register (regnum),
736 (long) read_register (regnum));
737 }
738 else
739 {
740 char regbuf[MAX_REGISTER_RAW_SIZE];
741
742 read_relative_register_raw_bytes (regnum, regbuf);
743
744 val_print (REGISTER_VIRTUAL_TYPE (regnum), regbuf, 0, 0,
745 gdb_stdout, 'x', 1, 0, Val_pretty_default);
746
747 if (!tabular)
748 {
749 printf_filtered (" ");
750 val_print (REGISTER_VIRTUAL_TYPE (regnum), regbuf, 0, 0,
751 gdb_stdout, 'd', 1, 0, Val_pretty_default);
752 }
753 }
754 }
755
756 static void
757 d30v_print_flags ()
758 {
759 long psw = read_register (PSW_REGNUM);
760 printf_filtered ("flags #1");
761 printf_filtered (" (sm) %d", (psw & PSW_SM) != 0);
762 printf_filtered (" (ea) %d", (psw & PSW_EA) != 0);
763 printf_filtered (" (db) %d", (psw & PSW_DB) != 0);
764 printf_filtered (" (ds) %d", (psw & PSW_DS) != 0);
765 printf_filtered (" (ie) %d", (psw & PSW_IE) != 0);
766 printf_filtered (" (rp) %d", (psw & PSW_RP) != 0);
767 printf_filtered (" (md) %d\n", (psw & PSW_MD) != 0);
768
769 printf_filtered ("flags #2");
770 printf_filtered (" (f0) %d", (psw & PSW_F0) != 0);
771 printf_filtered (" (f1) %d", (psw & PSW_F1) != 0);
772 printf_filtered (" (f2) %d", (psw & PSW_F2) != 0);
773 printf_filtered (" (f3) %d", (psw & PSW_F3) != 0);
774 printf_filtered (" (s) %d", (psw & PSW_S) != 0);
775 printf_filtered (" (v) %d", (psw & PSW_V) != 0);
776 printf_filtered (" (va) %d", (psw & PSW_VA) != 0);
777 printf_filtered (" (c) %d\n", (psw & PSW_C) != 0);
778 }
779
780 static void
781 print_flags_command (args, from_tty)
782 char *args;
783 int from_tty;
784 {
785 d30v_print_flags ();
786 }
787
788 void
789 d30v_do_registers_info (regnum, fpregs)
790 int regnum;
791 int fpregs;
792 {
793 long long num1, num2;
794 long psw;
795
796 if (regnum != -1)
797 {
798 if (REGISTER_NAME (0) == NULL || REGISTER_NAME (0)[0] == '\000')
799 return;
800
801 printf_filtered ("%s ", REGISTER_NAME (regnum));
802 d30v_print_register (regnum, 0);
803
804 printf_filtered ("\n");
805 return;
806 }
807
808 /* Have to print all the registers. Format them nicely. */
809
810 printf_filtered ("PC=");
811 print_address (read_pc (), gdb_stdout);
812
813 printf_filtered (" PSW=");
814 d30v_print_register (PSW_REGNUM, 1);
815
816 printf_filtered (" BPC=");
817 print_address (read_register (BPC_REGNUM), gdb_stdout);
818
819 printf_filtered (" BPSW=");
820 d30v_print_register (BPSW_REGNUM, 1);
821 printf_filtered ("\n");
822
823 printf_filtered ("DPC=");
824 print_address (read_register (DPC_REGNUM), gdb_stdout);
825
826 printf_filtered (" DPSW=");
827 d30v_print_register (DPSW_REGNUM, 1);
828
829 printf_filtered (" IBA=");
830 print_address (read_register (IBA_REGNUM), gdb_stdout);
831 printf_filtered ("\n");
832
833 printf_filtered ("RPT_C=");
834 d30v_print_register (RPT_C_REGNUM, 1);
835
836 printf_filtered (" RPT_S=");
837 print_address (read_register (RPT_S_REGNUM), gdb_stdout);
838
839 printf_filtered (" RPT_E=");
840 print_address (read_register (RPT_E_REGNUM), gdb_stdout);
841 printf_filtered ("\n");
842
843 printf_filtered ("MOD_S=");
844 print_address (read_register (MOD_S_REGNUM), gdb_stdout);
845
846 printf_filtered (" MOD_E=");
847 print_address (read_register (MOD_E_REGNUM), gdb_stdout);
848 printf_filtered ("\n");
849
850 printf_filtered ("EIT_VB=");
851 print_address (read_register (EIT_VB_REGNUM), gdb_stdout);
852
853 printf_filtered (" INT_S=");
854 d30v_print_register (INT_S_REGNUM, 1);
855
856 printf_filtered (" INT_M=");
857 d30v_print_register (INT_M_REGNUM, 1);
858 printf_filtered ("\n");
859
860 d30v_print_flags ();
861 for (regnum = 0; regnum <= 63;)
862 {
863 int i;
864
865 printf_filtered ("R%d-R%d ", regnum, regnum + 7);
866 if (regnum < 10)
867 printf_filtered (" ");
868 if (regnum + 7 < 10)
869 printf_filtered (" ");
870
871 for (i = 0; i < 8; i++)
872 {
873 printf_filtered (" ");
874 d30v_print_register (regnum++, 1);
875 }
876
877 printf_filtered ("\n");
878 }
879
880 printf_filtered ("A0-A1 ");
881
882 d30v_print_register (A0_REGNUM, 1);
883 printf_filtered (" ");
884 d30v_print_register (A1_REGNUM, 1);
885 printf_filtered ("\n");
886 }
887
888 CORE_ADDR
889 d30v_fix_call_dummy (dummyname, start_sp, fun, nargs, args, type, gcc_p)
890 char *dummyname;
891 CORE_ADDR start_sp;
892 CORE_ADDR fun;
893 int nargs;
894 value_ptr *args;
895 struct type *type;
896 int gcc_p;
897 {
898 int regnum;
899 CORE_ADDR sp;
900 char buffer[MAX_REGISTER_RAW_SIZE];
901 struct frame_info *frame = get_current_frame ();
902 frame->dummy = start_sp;
903 /*start_sp |= DMEM_START; */
904
905 sp = start_sp;
906 for (regnum = 0; regnum < NUM_REGS; regnum++)
907 {
908 sp -= REGISTER_RAW_SIZE (regnum);
909 store_address (buffer, REGISTER_RAW_SIZE (regnum), read_register (regnum));
910 write_memory (sp, buffer, REGISTER_RAW_SIZE (regnum));
911 }
912 write_register (SP_REGNUM, (LONGEST) sp);
913 /* now we need to load LR with the return address */
914 write_register (LR_REGNUM, (LONGEST) d30v_call_dummy_address ());
915 return sp;
916 }
917
918 static void
919 d30v_pop_dummy_frame (fi)
920 struct frame_info *fi;
921 {
922 CORE_ADDR sp = fi->dummy;
923 int regnum;
924
925 for (regnum = 0; regnum < NUM_REGS; regnum++)
926 {
927 sp -= REGISTER_RAW_SIZE (regnum);
928 write_register (regnum, read_memory_unsigned_integer (sp, REGISTER_RAW_SIZE (regnum)));
929 }
930 flush_cached_frames (); /* needed? */
931 }
932
933
934 CORE_ADDR
935 d30v_push_arguments (nargs, args, sp, struct_return, struct_addr)
936 int nargs;
937 value_ptr *args;
938 CORE_ADDR sp;
939 int struct_return;
940 CORE_ADDR struct_addr;
941 {
942 int i, len, index = 0, regnum = 2;
943 char buffer[4], *contents;
944 LONGEST val;
945 CORE_ADDR ptrs[10];
946
947 #if 0
948 /* Pass 1. Put all large args on stack */
949 for (i = 0; i < nargs; i++)
950 {
951 value_ptr arg = args[i];
952 struct type *arg_type = check_typedef (VALUE_TYPE (arg));
953 len = TYPE_LENGTH (arg_type);
954 contents = VALUE_CONTENTS (arg);
955 val = extract_signed_integer (contents, len);
956 if (len > 4)
957 {
958 /* put on stack and pass pointers */
959 sp -= len;
960 write_memory (sp, contents, len);
961 ptrs[index++] = sp;
962 }
963 }
964 #endif
965 index = 0;
966
967 for (i = 0; i < nargs; i++)
968 {
969 value_ptr arg = args[i];
970 struct type *arg_type = check_typedef (VALUE_TYPE (arg));
971 len = TYPE_LENGTH (arg_type);
972 contents = VALUE_CONTENTS (arg);
973 if (len > 4)
974 {
975 /* we need multiple registers */
976 int ndx;
977
978 for (ndx = 0; len > 0; ndx += 8, len -= 8)
979 {
980 if (regnum & 1)
981 regnum++; /* all args > 4 bytes start in even register */
982
983 if (regnum < 18)
984 {
985 val = extract_signed_integer (&contents[ndx], 4);
986 write_register (regnum++, val);
987
988 if (len >= 8)
989 val = extract_signed_integer (&contents[ndx + 4], 4);
990 else
991 val = extract_signed_integer (&contents[ndx + 4], len - 4);
992 write_register (regnum++, val);
993 }
994 else
995 {
996 /* no more registers available. put it on the stack */
997
998 /* all args > 4 bytes are padded to a multiple of 8 bytes
999 and start on an 8 byte boundary */
1000 if (sp & 7)
1001 sp -= (sp & 7); /* align it */
1002
1003 sp -= ((len + 7) & ~7); /* allocate space */
1004 write_memory (sp, &contents[ndx], len);
1005 break;
1006 }
1007 }
1008 }
1009 else
1010 {
1011 if (regnum < 18)
1012 {
1013 val = extract_signed_integer (contents, len);
1014 write_register (regnum++, val);
1015 }
1016 else
1017 {
1018 /* all args are padded to a multiple of 4 bytes (at least) */
1019 sp -= ((len + 3) & ~3);
1020 write_memory (sp, contents, len);
1021 }
1022 }
1023 }
1024 if (sp & 7)
1025 /* stack pointer is not on an 8 byte boundary -- align it */
1026 sp -= (sp & 7);
1027 return sp;
1028 }
1029
1030
1031 /* pick an out-of-the-way place to set the return value */
1032 /* for an inferior function call. The link register is set to this */
1033 /* value and a momentary breakpoint is set there. When the breakpoint */
1034 /* is hit, the dummy frame is popped and the previous environment is */
1035 /* restored. */
1036
1037 CORE_ADDR
1038 d30v_call_dummy_address ()
1039 {
1040 CORE_ADDR entry;
1041 struct minimal_symbol *sym;
1042
1043 entry = entry_point_address ();
1044
1045 if (entry != 0)
1046 return entry;
1047
1048 sym = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
1049
1050 if (!sym || MSYMBOL_TYPE (sym) != mst_text)
1051 return 0;
1052 else
1053 return SYMBOL_VALUE_ADDRESS (sym);
1054 }
1055
1056 /* Given a return value in `regbuf' with a type `valtype',
1057 extract and copy its value into `valbuf'. */
1058
1059 void
1060 d30v_extract_return_value (valtype, regbuf, valbuf)
1061 struct type *valtype;
1062 char regbuf[REGISTER_BYTES];
1063 char *valbuf;
1064 {
1065 memcpy (valbuf, regbuf + REGISTER_BYTE (2), TYPE_LENGTH (valtype));
1066 }
1067
1068 /* The following code implements access to, and display of, the D30V's
1069 instruction trace buffer. The buffer consists of 64K or more
1070 4-byte words of data, of which each words includes an 8-bit count,
1071 an 8-bit segment number, and a 16-bit instruction address.
1072
1073 In theory, the trace buffer is continuously capturing instruction
1074 data that the CPU presents on its "debug bus", but in practice, the
1075 ROMified GDB stub only enables tracing when it continues or steps
1076 the program, and stops tracing when the program stops; so it
1077 actually works for GDB to read the buffer counter out of memory and
1078 then read each trace word. The counter records where the tracing
1079 stops, but there is no record of where it started, so we remember
1080 the PC when we resumed and then search backwards in the trace
1081 buffer for a word that includes that address. This is not perfect,
1082 because you will miss trace data if the resumption PC is the target
1083 of a branch. (The value of the buffer counter is semi-random, any
1084 trace data from a previous program stop is gone.) */
1085
1086 /* The address of the last word recorded in the trace buffer. */
1087
1088 #define DBBC_ADDR (0xd80000)
1089
1090 /* The base of the trace buffer, at least for the "Board_0". */
1091
1092 #define TRACE_BUFFER_BASE (0xf40000)
1093
1094 static void trace_command PARAMS ((char *, int));
1095
1096 static void untrace_command PARAMS ((char *, int));
1097
1098 static void trace_info PARAMS ((char *, int));
1099
1100 static void tdisassemble_command PARAMS ((char *, int));
1101
1102 static void display_trace PARAMS ((int, int));
1103
1104 /* True when instruction traces are being collected. */
1105
1106 static int tracing;
1107
1108 /* Remembered PC. */
1109
1110 static CORE_ADDR last_pc;
1111
1112 /* True when trace output should be displayed whenever program stops. */
1113
1114 static int trace_display;
1115
1116 /* True when trace listing should include source lines. */
1117
1118 static int default_trace_show_source = 1;
1119
1120 struct trace_buffer
1121 {
1122 int size;
1123 short *counts;
1124 CORE_ADDR *addrs;
1125 }
1126 trace_data;
1127
1128 static void
1129 trace_command (args, from_tty)
1130 char *args;
1131 int from_tty;
1132 {
1133 /* Clear the host-side trace buffer, allocating space if needed. */
1134 trace_data.size = 0;
1135 if (trace_data.counts == NULL)
1136 trace_data.counts = (short *) xmalloc (65536 * sizeof (short));
1137 if (trace_data.addrs == NULL)
1138 trace_data.addrs = (CORE_ADDR *) xmalloc (65536 * sizeof (CORE_ADDR));
1139
1140 tracing = 1;
1141
1142 printf_filtered ("Tracing is now on.\n");
1143 }
1144
1145 static void
1146 untrace_command (args, from_tty)
1147 char *args;
1148 int from_tty;
1149 {
1150 tracing = 0;
1151
1152 printf_filtered ("Tracing is now off.\n");
1153 }
1154
1155 static void
1156 trace_info (args, from_tty)
1157 char *args;
1158 int from_tty;
1159 {
1160 int i;
1161
1162 if (trace_data.size)
1163 {
1164 printf_filtered ("%d entries in trace buffer:\n", trace_data.size);
1165
1166 for (i = 0; i < trace_data.size; ++i)
1167 {
1168 printf_filtered ("%d: %d instruction%s at 0x%s\n",
1169 i, trace_data.counts[i],
1170 (trace_data.counts[i] == 1 ? "" : "s"),
1171 paddr_nz (trace_data.addrs[i]));
1172 }
1173 }
1174 else
1175 printf_filtered ("No entries in trace buffer.\n");
1176
1177 printf_filtered ("Tracing is currently %s.\n", (tracing ? "on" : "off"));
1178 }
1179
1180 /* Print the instruction at address MEMADDR in debugged memory,
1181 on STREAM. Returns length of the instruction, in bytes. */
1182
1183 static int
1184 print_insn (memaddr, stream)
1185 CORE_ADDR memaddr;
1186 GDB_FILE *stream;
1187 {
1188 /* If there's no disassembler, something is very wrong. */
1189 if (tm_print_insn == NULL)
1190 internal_error ("print_insn: no disassembler");
1191
1192 if (TARGET_BYTE_ORDER == BIG_ENDIAN)
1193 tm_print_insn_info.endian = BFD_ENDIAN_BIG;
1194 else
1195 tm_print_insn_info.endian = BFD_ENDIAN_LITTLE;
1196 return (*tm_print_insn) (memaddr, &tm_print_insn_info);
1197 }
1198
1199 void
1200 d30v_eva_prepare_to_trace ()
1201 {
1202 if (!tracing)
1203 return;
1204
1205 last_pc = read_register (PC_REGNUM);
1206 }
1207
1208 /* Collect trace data from the target board and format it into a form
1209 more useful for display. */
1210
1211 void
1212 d30v_eva_get_trace_data ()
1213 {
1214 int count, i, j, oldsize;
1215 int trace_addr, trace_seg, trace_cnt, next_cnt;
1216 unsigned int last_trace, trace_word, next_word;
1217 unsigned int *tmpspace;
1218
1219 if (!tracing)
1220 return;
1221
1222 tmpspace = xmalloc (65536 * sizeof (unsigned int));
1223
1224 last_trace = read_memory_unsigned_integer (DBBC_ADDR, 2) << 2;
1225
1226 /* Collect buffer contents from the target, stopping when we reach
1227 the word recorded when execution resumed. */
1228
1229 count = 0;
1230 while (last_trace > 0)
1231 {
1232 QUIT;
1233 trace_word =
1234 read_memory_unsigned_integer (TRACE_BUFFER_BASE + last_trace, 4);
1235 trace_addr = trace_word & 0xffff;
1236 last_trace -= 4;
1237 /* Ignore an apparently nonsensical entry. */
1238 if (trace_addr == 0xffd5)
1239 continue;
1240 tmpspace[count++] = trace_word;
1241 if (trace_addr == last_pc)
1242 break;
1243 if (count > 65535)
1244 break;
1245 }
1246
1247 /* Move the data to the host-side trace buffer, adjusting counts to
1248 include the last instruction executed and transforming the address
1249 into something that GDB likes. */
1250
1251 for (i = 0; i < count; ++i)
1252 {
1253 trace_word = tmpspace[i];
1254 next_word = ((i == 0) ? 0 : tmpspace[i - 1]);
1255 trace_addr = trace_word & 0xffff;
1256 next_cnt = (next_word >> 24) & 0xff;
1257 j = trace_data.size + count - i - 1;
1258 trace_data.addrs[j] = (trace_addr << 2) + 0x1000000;
1259 trace_data.counts[j] = next_cnt + 1;
1260 }
1261
1262 oldsize = trace_data.size;
1263 trace_data.size += count;
1264
1265 free (tmpspace);
1266
1267 if (trace_display)
1268 display_trace (oldsize, trace_data.size);
1269 }
1270
1271 static void
1272 tdisassemble_command (arg, from_tty)
1273 char *arg;
1274 int from_tty;
1275 {
1276 int i, count;
1277 CORE_ADDR low, high;
1278 char *space_index;
1279
1280 if (!arg)
1281 {
1282 low = 0;
1283 high = trace_data.size;
1284 }
1285 else if (!(space_index = (char *) strchr (arg, ' ')))
1286 {
1287 low = parse_and_eval_address (arg);
1288 high = low + 5;
1289 }
1290 else
1291 {
1292 /* Two arguments. */
1293 *space_index = '\0';
1294 low = parse_and_eval_address (arg);
1295 high = parse_and_eval_address (space_index + 1);
1296 if (high < low)
1297 high = low;
1298 }
1299
1300 printf_filtered ("Dump of trace from %s to %s:\n",
1301 paddr_u (low),
1302 paddr_u (high));
1303
1304 display_trace (low, high);
1305
1306 printf_filtered ("End of trace dump.\n");
1307 gdb_flush (gdb_stdout);
1308 }
1309
1310 static void
1311 display_trace (low, high)
1312 int low, high;
1313 {
1314 int i, count, trace_show_source, first, suppress;
1315 CORE_ADDR next_address;
1316
1317 trace_show_source = default_trace_show_source;
1318 if (!have_full_symbols () && !have_partial_symbols ())
1319 {
1320 trace_show_source = 0;
1321 printf_filtered ("No symbol table is loaded. Use the \"file\" command.\n");
1322 printf_filtered ("Trace will not display any source.\n");
1323 }
1324
1325 first = 1;
1326 suppress = 0;
1327 for (i = low; i < high; ++i)
1328 {
1329 next_address = trace_data.addrs[i];
1330 count = trace_data.counts[i];
1331 while (count-- > 0)
1332 {
1333 QUIT;
1334 if (trace_show_source)
1335 {
1336 struct symtab_and_line sal, sal_prev;
1337
1338 sal_prev = find_pc_line (next_address - 4, 0);
1339 sal = find_pc_line (next_address, 0);
1340
1341 if (sal.symtab)
1342 {
1343 if (first || sal.line != sal_prev.line)
1344 print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
1345 suppress = 0;
1346 }
1347 else
1348 {
1349 if (!suppress)
1350 /* FIXME-32x64--assumes sal.pc fits in long. */
1351 printf_filtered ("No source file for address %s.\n",
1352 local_hex_string ((unsigned long) sal.pc));
1353 suppress = 1;
1354 }
1355 }
1356 first = 0;
1357 print_address (next_address, gdb_stdout);
1358 printf_filtered (":");
1359 printf_filtered ("\t");
1360 wrap_here (" ");
1361 next_address = next_address + print_insn (next_address, gdb_stdout);
1362 printf_filtered ("\n");
1363 gdb_flush (gdb_stdout);
1364 }
1365 }
1366 }
1367
1368 extern void (*target_resume_hook) PARAMS ((void));
1369 extern void (*target_wait_loop_hook) PARAMS ((void));
1370
1371 void
1372 _initialize_d30v_tdep ()
1373 {
1374 tm_print_insn = print_insn_d30v;
1375
1376 target_resume_hook = d30v_eva_prepare_to_trace;
1377 target_wait_loop_hook = d30v_eva_get_trace_data;
1378
1379 add_info ("flags", print_flags_command, "Print d30v flags.");
1380
1381 add_com ("trace", class_support, trace_command,
1382 "Enable tracing of instruction execution.");
1383
1384 add_com ("untrace", class_support, untrace_command,
1385 "Disable tracing of instruction execution.");
1386
1387 add_com ("tdisassemble", class_vars, tdisassemble_command,
1388 "Disassemble the trace buffer.\n\
1389 Two optional arguments specify a range of trace buffer entries\n\
1390 as reported by info trace (NOT addresses!).");
1391
1392 add_info ("trace", trace_info,
1393 "Display info about the trace data buffer.");
1394
1395 add_show_from_set (add_set_cmd ("tracedisplay", no_class,
1396 var_integer, (char *) &trace_display,
1397 "Set automatic display of trace.\n", &setlist),
1398 &showlist);
1399 add_show_from_set (add_set_cmd ("tracesource", no_class,
1400 var_integer, (char *) &default_trace_show_source,
1401 "Set display of source code with trace.\n", &setlist),
1402 &showlist);
1403
1404 }
GDB Binutils - Deliverables
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