AMD64 - Fix many compile-time warnings. int/ptr type mismatches, %llx, etc.
[dragonfly.git] / sys / platform / pc64 / amd64 / db_trace.c
CommitLineData
d7f50089 1/*
c8fe38ae
MD
2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 * 3. Neither the name of The DragonFly Project nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific, prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * --
32 *
d7f50089
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33 * Mach Operating System
34 * Copyright (c) 1991,1990 Carnegie Mellon University
35 * All Rights Reserved.
36 *
37 * Permission to use, copy, modify and distribute this software and its
38 * documentation is hereby granted, provided that both the copyright
39 * notice and this permission notice appear in all copies of the
40 * software, derivative works or modified versions, and any portions
41 * thereof, and that both notices appear in supporting documentation.
42 *
43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
45 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
46 *
47 * Carnegie Mellon requests users of this software to return to
48 *
49 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
50 * School of Computer Science
51 * Carnegie Mellon University
52 * Pittsburgh PA 15213-3890
53 *
54 * any improvements or extensions that they make and grant Carnegie the
55 * rights to redistribute these changes.
56 *
57 * $FreeBSD: src/sys/i386/i386/db_trace.c,v 1.35.2.3 2002/02/21 22:31:25 silby Exp $
c8fe38ae 58 * $DragonFly: src/sys/platform/pc64/amd64/db_trace.c,v 1.3 2008/08/29 17:07:10 dillon Exp $
d7f50089
YY
59 */
60
61#include <sys/param.h>
62#include <sys/systm.h>
63#include <sys/linker_set.h>
64#include <sys/lock.h>
65#include <sys/proc.h>
66#include <sys/reg.h>
67
68#include <machine/cpu.h>
69#include <machine/md_var.h>
70
71#include <vm/vm.h>
72#include <vm/vm_param.h>
73#include <vm/pmap.h>
74#include <vm/vm_map.h>
75#include <ddb/ddb.h>
76#include <dlfcn.h> /* DLL */
77
78#include <sys/user.h>
79
80#include <ddb/db_access.h>
81#include <ddb/db_sym.h>
82#include <ddb/db_variables.h>
83
84db_varfcn_t db_dr0;
85db_varfcn_t db_dr1;
86db_varfcn_t db_dr2;
87db_varfcn_t db_dr3;
88db_varfcn_t db_dr4;
89db_varfcn_t db_dr5;
90db_varfcn_t db_dr6;
91db_varfcn_t db_dr7;
92
93/*
94 * Machine register set.
95 */
96struct db_variable db_regs[] = {
60233e58
SW
97 { "cs", &ddb_regs.tf_cs, NULL },
98/* { "ds", &ddb_regs.tf_ds, NULL },
99 { "es", &ddb_regs.tf_es, NULL },
100 { "fs", &ddb_regs.tf_fs, NULL },
101 { "gs", &ddb_regs.tf_gs, NULL }, */
102 { "ss", &ddb_regs.tf_ss, NULL },
103 { "rax", &ddb_regs.tf_rax, NULL },
104 { "rcx", &ddb_regs.tf_rcx, NULL },
105 { "rdx", &ddb_regs.tf_rdx, NULL },
106 { "rbx", &ddb_regs.tf_rbx, NULL },
107 { "rsp", &ddb_regs.tf_rsp, NULL },
108 { "rbp", &ddb_regs.tf_rbp, NULL },
109 { "rsi", &ddb_regs.tf_rsi, NULL },
110 { "rdi", &ddb_regs.tf_rdi, NULL },
111 { "rip", &ddb_regs.tf_rip, NULL },
112 { "rfl", &ddb_regs.tf_rflags, NULL },
113 { "r8", &ddb_regs.tf_r8, NULL },
114 { "r9", &ddb_regs.tf_r9, NULL },
115 { "r10", &ddb_regs.tf_r10, NULL },
116 { "r11", &ddb_regs.tf_r11, NULL },
117 { "r12", &ddb_regs.tf_r12, NULL },
118 { "r13", &ddb_regs.tf_r13, NULL },
119 { "r14", &ddb_regs.tf_r14, NULL },
120 { "r15", &ddb_regs.tf_r15, NULL },
d7f50089
YY
121 { "dr0", NULL, db_dr0 },
122 { "dr1", NULL, db_dr1 },
123 { "dr2", NULL, db_dr2 },
124 { "dr3", NULL, db_dr3 },
125 { "dr4", NULL, db_dr4 },
126 { "dr5", NULL, db_dr5 },
127 { "dr6", NULL, db_dr6 },
128 { "dr7", NULL, db_dr7 },
129};
130struct db_variable *db_eregs = db_regs + sizeof(db_regs)/sizeof(db_regs[0]);
131
132/*
133 * Stack trace.
134 */
135#define INKERNEL(va) (((vm_offset_t)(va)) >= USRSTACK)
136
137struct amd64_frame {
138 struct amd64_frame *f_frame;
139 long f_retaddr;
140 long f_arg0;
141};
142
143#define NORMAL 0
144#define TRAP 1
145#define INTERRUPT 2
146#define SYSCALL 3
147
148static void db_nextframe(struct amd64_frame **, db_addr_t *);
149static int db_numargs(struct amd64_frame *);
c8fe38ae
MD
150static void db_print_stack_entry(const char *, int, char **, long *, db_addr_t);
151static void dl_symbol_values(long callpc, const char **name);
d7f50089
YY
152
153
154static char *watchtype_str(int type);
155static int kamd64_set_watch(int watchnum, unsigned int watchaddr,
156 int size, int access, struct dbreg * d);
157static int kamd64_clr_watch(int watchnum, struct dbreg * d);
158int db_md_set_watchpoint(db_expr_t addr, db_expr_t size);
159int db_md_clr_watchpoint(db_expr_t addr, db_expr_t size);
160void db_md_list_watchpoints(void);
161
162
163/*
164 * Figure out how many arguments were passed into the frame at "fp".
165 */
166static int
167db_numargs(struct amd64_frame *fp)
168{
c8fe38ae
MD
169#if 1
170 return (0); /* regparm, needs dwarf2 info */
171#else
d7f50089
YY
172 int args;
173#if 0
174 int *argp;
175 int inst;
176
177 argp = (int *)db_get_value((int)&fp->f_retaddr, 4, FALSE);
178 /*
179 * XXX etext is wrong for LKMs. We should attempt to interpret
180 * the instruction at the return address in all cases. This
181 * may require better fault handling.
182 */
183 if (argp < (int *)btext || argp >= (int *)etext) {
184 args = 5;
185 } else {
186 inst = db_get_value((int)argp, 4, FALSE);
187 if ((inst & 0xff) == 0x59) /* popl %ecx */
188 args = 1;
189 else if ((inst & 0xffff) == 0xc483) /* addl $Ibs, %esp */
190 args = ((inst >> 16) & 0xff) / 4;
191 else
192 args = 5;
193 }
194#endif
195 args = 5;
196 return(args);
c8fe38ae 197#endif
d7f50089
YY
198}
199
200static void
c8fe38ae 201db_print_stack_entry(const char *name, int narg, char **argnp, long *argp,
d7f50089
YY
202 db_addr_t callpc)
203{
204 db_printf("%s(", name);
205 while (narg) {
206 if (argnp)
207 db_printf("%s=", *argnp++);
973c11b9 208 db_printf("%ld", (long)db_get_value((long)argp, 8, FALSE));
d7f50089
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209 argp++;
210 if (--narg != 0)
211 db_printf(",");
c8fe38ae 212 }
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213 db_printf(") at ");
214 db_printsym(callpc, DB_STGY_PROC);
215 db_printf("\n");
216}
217
218/*
219 * Figure out the next frame up in the call stack.
220 */
221static void
222db_nextframe(struct amd64_frame **fp, db_addr_t *ip)
223{
224 struct trapframe *tf;
225 int frame_type;
c8fe38ae 226 long rip, rsp, rbp;
d7f50089
YY
227 db_expr_t offset;
228 const char *sym, *name;
229
c8fe38ae
MD
230 rip = db_get_value((long) &(*fp)->f_retaddr, 8, FALSE);
231 rbp = db_get_value((long) &(*fp)->f_frame, 8, FALSE);
d7f50089
YY
232
233 /*
234 * Figure out frame type.
235 */
236
237 frame_type = NORMAL;
238
c8fe38ae 239 sym = db_search_symbol(rip, DB_STGY_ANY, &offset);
d7f50089 240 db_symbol_values(sym, &name, NULL);
c8fe38ae 241 dl_symbol_values(rip, &name);
d7f50089
YY
242 if (name != NULL) {
243 if (!strcmp(name, "calltrap")) {
244 frame_type = TRAP;
245 } else if (!strncmp(name, "Xresume", 7)) {
246 frame_type = INTERRUPT;
247 } else if (!strcmp(name, "_Xsyscall")) {
248 frame_type = SYSCALL;
249 }
250 }
251
252 /*
253 * Normal frames need no special processing.
254 */
255 if (frame_type == NORMAL) {
c8fe38ae
MD
256 *ip = (db_addr_t) rip;
257 *fp = (struct amd64_frame *) rbp;
d7f50089
YY
258 return;
259 }
260
c8fe38ae 261 db_print_stack_entry(name, 0, 0, 0, rip);
d7f50089
YY
262
263 /*
264 * Point to base of trapframe which is just above the
265 * current frame.
266 */
c8fe38ae 267 tf = (struct trapframe *)((long)*fp + 16);
d7f50089
YY
268
269#if 0
c8fe38ae 270 rsp = (ISPL(tf->tf_cs) == SEL_UPL) ? tf->tf_rsp : (long)&tf->tf_rsp;
d7f50089 271#endif
c8fe38ae 272 rsp = (long)&tf->tf_rsp;
d7f50089
YY
273
274 switch (frame_type) {
275 case TRAP:
276 {
c8fe38ae
MD
277 rip = tf->tf_rip;
278 rbp = tf->tf_rbp;
d7f50089 279 db_printf(
973c11b9 280 "--- trap %016lx, rip = %016lx, rsp = %016lx, rbp = %016lx ---\n",
c8fe38ae 281 tf->tf_trapno, rip, rsp, rbp);
d7f50089
YY
282 }
283 break;
284 case SYSCALL:
285 {
c8fe38ae
MD
286 rip = tf->tf_rip;
287 rbp = tf->tf_rbp;
d7f50089 288 db_printf(
973c11b9 289 "--- syscall %016lx, rip = %016lx, rsp = %016lx, rbp = %016lx ---\n",
c8fe38ae 290 tf->tf_rax, rip, rsp, rbp);
d7f50089
YY
291 }
292 break;
293 case INTERRUPT:
c8fe38ae 294 tf = (struct trapframe *)((long)*fp + 16);
d7f50089 295 {
c8fe38ae
MD
296 rip = tf->tf_rip;
297 rbp = tf->tf_rbp;
d7f50089 298 db_printf(
973c11b9 299 "--- interrupt, rip = %016lx, rsp = %016lx, rbp = %016lx ---\n",
c8fe38ae 300 rip, rsp, rbp);
d7f50089
YY
301 }
302 break;
303 default:
304 break;
305 }
306
c8fe38ae
MD
307 *ip = (db_addr_t) rip;
308 *fp = (struct amd64_frame *) rbp;
d7f50089
YY
309}
310
311void
312db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
313 char *modif)
314{
315 struct amd64_frame *frame;
973c11b9 316 long *argp;
d7f50089
YY
317 db_addr_t callpc;
318 boolean_t first;
319 int i;
320
321 if (count == -1)
322 count = 1024;
323
324 if (!have_addr) {
325 frame = (struct amd64_frame *)BP_REGS(&ddb_regs);
326 if (frame == NULL)
c8fe38ae 327 frame = (struct amd64_frame *)(SP_REGS(&ddb_regs) - 8);
d7f50089
YY
328 callpc = PC_REGS(&ddb_regs);
329 } else {
330 /*
331 * Look for something that might be a frame pointer, just as
332 * a convenience.
333 */
334 frame = (struct amd64_frame *)addr;
c8fe38ae 335 for (i = 0; i < 4096; i += 8) {
d7f50089
YY
336 struct amd64_frame *check;
337
c8fe38ae 338 check = (struct amd64_frame *)db_get_value((long)((char *)&frame->f_frame + i), 8, FALSE);
d7f50089
YY
339 if ((char *)check - (char *)frame >= 0 &&
340 (char *)check - (char *)frame < 4096
341 ) {
342 break;
343 }
344 db_printf("%p does not look like a stack frame, skipping\n", (char *)&frame->f_frame + i);
345 }
346 if (i == 4096) {
347 db_printf("Unable to find anything that looks like a stack frame\n");
348 return;
349 }
350 frame = (void *)((char *)frame + i);
351 db_printf("Trace beginning at frame %p\n", frame);
c8fe38ae 352 callpc = (db_addr_t)db_get_value((long)&frame->f_retaddr, 8, FALSE);
d7f50089
YY
353 }
354
355 first = TRUE;
356 while (count--) {
357 struct amd64_frame *actframe;
358 int narg;
359 const char * name;
360 db_expr_t offset;
361 c_db_sym_t sym;
362#define MAXNARG 16
363 char *argnames[MAXNARG], **argnp = NULL;
364
365 sym = db_search_symbol(callpc, DB_STGY_ANY, &offset);
366 db_symbol_values(sym, &name, NULL);
367 dl_symbol_values(callpc, &name);
368
369 /*
370 * Attempt to determine a (possibly fake) frame that gives
371 * the caller's pc. It may differ from `frame' if the
372 * current function never sets up a standard frame or hasn't
373 * set one up yet or has just discarded one. The last two
374 * cases can be guessed fairly reliably for code generated
375 * by gcc. The first case is too much trouble to handle in
376 * general because the amount of junk on the stack depends
377 * on the pc (the special handling of "calltrap", etc. in
378 * db_nextframe() works because the `next' pc is special).
379 */
380 actframe = frame;
381 if (first) {
382 if (!have_addr) {
383 int instr;
384
385 instr = db_get_value(callpc, 4, FALSE);
c8fe38ae
MD
386 if ((instr & 0xffffffff) == 0xe5894855) {
387 /* pushq %rbp; movq %rsp, %rbp */
d7f50089 388 actframe = (struct amd64_frame *)
c8fe38ae
MD
389 (SP_REGS(&ddb_regs) - 8);
390 } else if ((instr & 0xffffff) == 0xe58948) {
391 /* movq %rsp, %rbp */
d7f50089
YY
392 actframe = (struct amd64_frame *)
393 SP_REGS(&ddb_regs);
394 if (ddb_regs.tf_rbp == 0) {
395 /* Fake caller's frame better. */
396 frame = actframe;
397 }
c8fe38ae 398 } else if ((instr & 0xff) == 0xc3) {
d7f50089
YY
399 /* ret */
400 actframe = (struct amd64_frame *)
c8fe38ae 401 (SP_REGS(&ddb_regs) - 8);
d7f50089
YY
402 } else if (offset == 0) {
403 /* Probably a symbol in assembler code. */
404 actframe = (struct amd64_frame *)
c8fe38ae 405 (SP_REGS(&ddb_regs) - 8);
d7f50089
YY
406 }
407 } else if (name != NULL &&
408 strcmp(name, "fork_trampoline") == 0) {
409 /*
410 * Don't try to walk back on a stack for a
411 * process that hasn't actually been run yet.
412 */
413 db_print_stack_entry(name, 0, 0, 0, callpc);
414 break;
415 }
416 first = FALSE;
417 }
418
419 argp = &actframe->f_arg0;
420 narg = MAXNARG;
421 if (sym != NULL && db_sym_numargs(sym, &narg, argnames)) {
422 argnp = argnames;
423 } else {
424 narg = db_numargs(frame);
425 }
426
427 db_print_stack_entry(name, narg, argnp, argp, callpc);
428
429 if (actframe != frame) {
430 /* `frame' belongs to caller. */
431 callpc = (db_addr_t)
c8fe38ae 432 db_get_value((long)&actframe->f_retaddr, 8, FALSE);
d7f50089
YY
433 continue;
434 }
435
436 db_nextframe(&frame, &callpc);
437 if (frame == 0)
438 break;
439 }
440}
441
442void
1e5fb84b 443print_backtrace(void)
d7f50089 444{
c8fe38ae 445 register_t rbp;
d7f50089 446
c8fe38ae
MD
447 __asm __volatile("movq %%rbp, %0" : "=r" (rbp));
448 db_stack_trace_cmd(rbp, 1, -1, NULL);
d7f50089
YY
449}
450
451#define DB_DRX_FUNC(reg) \
452int \
453db_ ## reg (struct db_variable *vp, db_expr_t *valuep, int op) \
454{ \
455 if (op == DB_VAR_GET) \
456 *valuep = r ## reg (); \
457 else \
458 load_ ## reg (*valuep); \
459 \
460 return(0); \
461}
462
463DB_DRX_FUNC(dr0)
464DB_DRX_FUNC(dr1)
465DB_DRX_FUNC(dr2)
466DB_DRX_FUNC(dr3)
467DB_DRX_FUNC(dr4)
468DB_DRX_FUNC(dr5)
469DB_DRX_FUNC(dr6)
470DB_DRX_FUNC(dr7)
471
472static int
473kamd64_set_watch(int watchnum, unsigned int watchaddr, int size, int access,
474 struct dbreg *d)
475{
476 int i;
477 unsigned int mask;
478
479 if (watchnum == -1) {
480 for (i = 0, mask = 0x3; i < 4; i++, mask <<= 2)
481 if ((d->dr[7] & mask) == 0)
482 break;
483 if (i < 4)
484 watchnum = i;
485 else
486 return(-1);
487 }
c8fe38ae 488
d7f50089
YY
489 switch (access) {
490 case DBREG_DR7_EXEC:
491 size = 1; /* size must be 1 for an execution breakpoint */
492 /* fall through */
493 case DBREG_DR7_WRONLY:
494 case DBREG_DR7_RDWR:
495 break;
496 default:
497 return(-1);
498 }
499
500 /*
c8fe38ae 501 * we can watch a 1, 2, 4, or 8 byte sized location
d7f50089
YY
502 */
503 switch (size) {
504 case 1:
505 mask = 0x00;
506 break;
507 case 2:
508 mask = 0x01 << 2;
509 break;
510 case 4:
511 mask = 0x03 << 2;
c8fe38ae
MD
512 case 8:
513 mask = 0x02 << 2;
d7f50089
YY
514 break;
515 default:
516 return(-1);
517 }
518
519 mask |= access;
520
521 /* clear the bits we are about to affect */
522 d->dr[7] &= ~((0x3 << (watchnum * 2)) | (0x0f << (watchnum * 4 + 16)));
523
524 /* set drN register to the address, N=watchnum */
525 DBREG_DRX(d, watchnum) = watchaddr;
526
527 /* enable the watchpoint */
528 d->dr[7] |= (0x2 << (watchnum * 2)) | (mask << (watchnum * 4 + 16));
529
530 return(watchnum);
531}
532
533
534int
535kamd64_clr_watch(int watchnum, struct dbreg *d)
536{
537 if (watchnum < 0 || watchnum >= 4)
538 return(-1);
c8fe38ae 539
d7f50089
YY
540 d->dr[7] &= ~((0x3 << (watchnum * 2)) | (0x0f << (watchnum * 4 + 16)));
541 DBREG_DRX(d, watchnum) = 0;
c8fe38ae 542
d7f50089
YY
543 return(0);
544}
545
546
547int
548db_md_set_watchpoint(db_expr_t addr, db_expr_t size)
549{
550 int avail, wsize;
551 int i;
552 struct dbreg d;
553
554 fill_dbregs(NULL, &d);
c8fe38ae 555
d7f50089 556 avail = 0;
c8fe38ae 557 for (i = 0; i < 4; i++) {
d7f50089
YY
558 if ((d.dr[7] & (3 << (i * 2))) == 0)
559 avail++;
560 }
c8fe38ae
MD
561
562 if (avail * 8 < size)
d7f50089 563 return(-1);
c8fe38ae 564
d7f50089
YY
565 for (i=0; i < 4 && (size != 0); i++) {
566 if ((d.dr[7] & (3 << (i * 2))) == 0) {
c8fe38ae
MD
567 if (size >= 8 || (avail == 1 && size > 4))
568 wsize = 8;
569 else if (size > 2)
d7f50089
YY
570 wsize = 4;
571 else
572 wsize = size;
573 if (wsize == 3)
574 wsize++;
575 kamd64_set_watch(i, addr, wsize, DBREG_DR7_WRONLY, &d);
576 addr += wsize;
577 size -= wsize;
578 }
579 }
580
581 set_dbregs(NULL, &d);
582
583 return(0);
584}
585
586int
587db_md_clr_watchpoint(db_expr_t addr, db_expr_t size)
588{
d7f50089 589 struct dbreg d;
c8fe38ae 590 int i;
d7f50089
YY
591
592 fill_dbregs(NULL, &d);
593
c8fe38ae 594 for(i = 0; i < 4; i++) {
d7f50089
YY
595 if (d.dr[7] & (3 << (i * 2))) {
596 if ((DBREG_DRX((&d), i) >= addr) &&
597 (DBREG_DRX((&d), i) < addr + size))
598 kamd64_clr_watch(i, &d);
599 }
600 }
601
602 set_dbregs(NULL, &d);
603
604 return(0);
605}
606
607static char *
608watchtype_str(int type)
609{
610 switch (type) {
611 case DBREG_DR7_EXEC:
612 return "execute";
613 case DBREG_DR7_RDWR:
614 return "read/write";
615 case DBREG_DR7_WRONLY:
616 return "write";
617 default:
618 return "invalid";
619 }
620}
621
622void
623db_md_list_watchpoints(void)
624{
625 int i;
626 struct dbreg d;
627
628 fill_dbregs(NULL, &d);
629
630 db_printf("\nhardware watchpoints:\n");
631 db_printf(" watch status type len address\n"
632 " ----- -------- ---------- --- ----------\n");
c8fe38ae 633 for (i = 0; i < 4; i++) {
d7f50089
YY
634 if (d.dr[7] & (0x03 << (i * 2))) {
635 unsigned type, len;
636 type = (d.dr[7] >> (16 + (i * 4))) & 3;
637 len = (d.dr[7] >> (16 + (i * 4) + 2)) & 3;
973c11b9 638 db_printf(" %-5d %-8s %10s %3d 0x%08lx\n",
d7f50089
YY
639 i, "enabled", watchtype_str(type),
640 len + 1, DBREG_DRX((&d), i));
641 } else {
642 db_printf(" %-5d disabled\n", i);
643 }
644 }
645
646 db_printf("\ndebug register values:\n");
c8fe38ae 647 for (i = 0; i < 8; i++)
973c11b9 648 db_printf(" dr%d 0x%08lx\n", i, DBREG_DRX((&d),i));
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649 db_printf("\n");
650}
651
652/*
653 * See if dladdr() can get the symbol name via the standard dynamic loader.
654 */
655static
656void
c8fe38ae 657dl_symbol_values(long callpc, const char **name)
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658{
659 Dl_info info;
660
661/*
662 if (*name == NULL) {
663 if (dladdr((const void *)callpc, &info) != 0) {
664 if (info.dli_saddr <= (const void *)callpc)
665 *name = info.dli_sname;
666 }
667 }
668*/
669}
670