]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Routines providing a simple monitor for use on the PowerMac. | |
3 | * | |
4 | * Copyright (C) 1996 Paul Mackerras. | |
5 | */ | |
6 | #include <linux/config.h> | |
7 | #include <linux/errno.h> | |
8 | #include <linux/sched.h> | |
9 | #include <linux/smp.h> | |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/bitops.h> | |
12 | #include <asm/ptrace.h> | |
13 | #include <asm/string.h> | |
14 | #include <asm/prom.h> | |
15 | #include <asm/bootx.h> | |
16 | #include <asm/machdep.h> | |
17 | #include <asm/xmon.h> | |
18 | #ifdef CONFIG_PMAC_BACKLIGHT | |
19 | #include <asm/backlight.h> | |
20 | #endif | |
21 | #include "nonstdio.h" | |
22 | #include "privinst.h" | |
23 | ||
24 | #define scanhex xmon_scanhex | |
25 | #define skipbl xmon_skipbl | |
26 | ||
27 | #ifdef CONFIG_SMP | |
28 | static unsigned long cpus_in_xmon = 0; | |
29 | static unsigned long got_xmon = 0; | |
30 | static volatile int take_xmon = -1; | |
31 | #endif /* CONFIG_SMP */ | |
32 | ||
33 | static unsigned adrs; | |
34 | static int size = 1; | |
35 | static unsigned ndump = 64; | |
36 | static unsigned nidump = 16; | |
37 | static unsigned ncsum = 4096; | |
38 | static int termch; | |
39 | ||
40 | static u_int bus_error_jmp[100]; | |
41 | #define setjmp xmon_setjmp | |
42 | #define longjmp xmon_longjmp | |
43 | ||
44 | /* Breakpoint stuff */ | |
45 | struct bpt { | |
46 | unsigned address; | |
47 | unsigned instr; | |
48 | unsigned count; | |
49 | unsigned char enabled; | |
50 | }; | |
51 | ||
52 | #define NBPTS 16 | |
53 | static struct bpt bpts[NBPTS]; | |
54 | static struct bpt dabr; | |
55 | static struct bpt iabr; | |
56 | static unsigned bpinstr = 0x7fe00008; /* trap */ | |
57 | ||
58 | /* Prototypes */ | |
59 | extern void (*debugger_fault_handler)(struct pt_regs *); | |
60 | static int cmds(struct pt_regs *); | |
61 | static int mread(unsigned, void *, int); | |
62 | static int mwrite(unsigned, void *, int); | |
63 | static void handle_fault(struct pt_regs *); | |
64 | static void byterev(unsigned char *, int); | |
65 | static void memex(void); | |
66 | static int bsesc(void); | |
67 | static void dump(void); | |
68 | static void prdump(unsigned, int); | |
69 | #ifdef __MWERKS__ | |
70 | static void prndump(unsigned, int); | |
71 | static int nvreadb(unsigned); | |
72 | #endif | |
73 | static int ppc_inst_dump(unsigned, int); | |
74 | void print_address(unsigned); | |
75 | static int getsp(void); | |
76 | static void dump_hash_table(void); | |
77 | static void backtrace(struct pt_regs *); | |
78 | static void excprint(struct pt_regs *); | |
79 | static void prregs(struct pt_regs *); | |
80 | static void memops(int); | |
81 | static void memlocate(void); | |
82 | static void memzcan(void); | |
83 | static void memdiffs(unsigned char *, unsigned char *, unsigned, unsigned); | |
84 | int skipbl(void); | |
85 | int scanhex(unsigned *valp); | |
86 | static void scannl(void); | |
87 | static int hexdigit(int); | |
88 | void getstring(char *, int); | |
89 | static void flush_input(void); | |
90 | static int inchar(void); | |
91 | static void take_input(char *); | |
92 | /* static void openforth(void); */ | |
93 | static unsigned read_spr(int); | |
94 | static void write_spr(int, unsigned); | |
95 | static void super_regs(void); | |
96 | static void print_sysmap(void); | |
97 | static void sysmap_lookup(void); | |
98 | static void remove_bpts(void); | |
99 | static void insert_bpts(void); | |
100 | static struct bpt *at_breakpoint(unsigned pc); | |
101 | static void bpt_cmds(void); | |
102 | static void cacheflush(void); | |
103 | #ifdef CONFIG_SMP | |
104 | static void cpu_cmd(void); | |
105 | #endif /* CONFIG_SMP */ | |
106 | static int pretty_print_addr(unsigned long addr); | |
107 | static void csum(void); | |
108 | #ifdef CONFIG_BOOTX_TEXT | |
109 | static void vidcmds(void); | |
110 | #endif | |
111 | static void bootcmds(void); | |
112 | static void proccall(void); | |
113 | static void printtime(void); | |
114 | ||
115 | extern int print_insn_big_powerpc(FILE *, unsigned long, unsigned); | |
116 | extern void printf(const char *fmt, ...); | |
117 | extern int putchar(int ch); | |
118 | extern int setjmp(u_int *); | |
119 | extern void longjmp(u_int *, int); | |
120 | ||
121 | extern void xmon_enter(void); | |
122 | extern void xmon_leave(void); | |
123 | extern char* xmon_find_symbol(unsigned long addr, unsigned long* saddr); | |
124 | extern unsigned long xmon_symbol_to_addr(char* symbol); | |
125 | ||
126 | static unsigned start_tb[NR_CPUS][2]; | |
127 | static unsigned stop_tb[NR_CPUS][2]; | |
128 | ||
129 | #define GETWORD(v) (((v)[0] << 24) + ((v)[1] << 16) + ((v)[2] << 8) + (v)[3]) | |
130 | ||
131 | #define isxdigit(c) (('0' <= (c) && (c) <= '9') \ | |
132 | || ('a' <= (c) && (c) <= 'f') \ | |
133 | || ('A' <= (c) && (c) <= 'F')) | |
134 | #define isalnum(c) (('0' <= (c) && (c) <= '9') \ | |
135 | || ('a' <= (c) && (c) <= 'z') \ | |
136 | || ('A' <= (c) && (c) <= 'Z')) | |
137 | #define isspace(c) (c == ' ' || c == '\t' || c == 10 || c == 13 || c == 0) | |
138 | ||
139 | static char *help_string = "\ | |
140 | Commands:\n\ | |
141 | d dump bytes\n\ | |
142 | di dump instructions\n\ | |
143 | df dump float values\n\ | |
144 | dd dump double values\n\ | |
145 | e print exception information\n\ | |
146 | h dump hash table\n\ | |
147 | m examine/change memory\n\ | |
148 | mm move a block of memory\n\ | |
149 | ms set a block of memory\n\ | |
150 | md compare two blocks of memory\n\ | |
151 | M print System.map\n\ | |
152 | r print registers\n\ | |
153 | S print special registers\n\ | |
154 | t print backtrace\n\ | |
155 | la lookup address in system.map\n\ | |
156 | ls lookup symbol in system.map\n\ | |
157 | x exit monitor\n\ | |
158 | "; | |
159 | ||
160 | static int xmon_trace[NR_CPUS]; | |
161 | #define SSTEP 1 /* stepping because of 's' command */ | |
162 | #define BRSTEP 2 /* stepping over breakpoint */ | |
163 | ||
164 | static struct pt_regs *xmon_regs[NR_CPUS]; | |
165 | ||
166 | extern inline void sync(void) | |
167 | { | |
168 | asm volatile("sync; isync"); | |
169 | } | |
170 | ||
171 | extern inline void __delay(unsigned int loops) | |
172 | { | |
173 | if (loops != 0) | |
174 | __asm__ __volatile__("mtctr %0; 1: bdnz 1b" : : | |
175 | "r" (loops) : "ctr"); | |
176 | } | |
177 | ||
178 | static void get_tb(unsigned *p) | |
179 | { | |
180 | unsigned hi, lo, hiagain; | |
181 | ||
182 | if ((get_pvr() >> 16) == 1) | |
183 | return; | |
184 | ||
185 | do { | |
186 | asm volatile("mftbu %0; mftb %1; mftbu %2" | |
187 | : "=r" (hi), "=r" (lo), "=r" (hiagain)); | |
188 | } while (hi != hiagain); | |
189 | p[0] = hi; | |
190 | p[1] = lo; | |
191 | } | |
192 | ||
193 | void | |
194 | xmon(struct pt_regs *excp) | |
195 | { | |
196 | struct pt_regs regs; | |
197 | int msr, cmd; | |
198 | ||
199 | get_tb(stop_tb[smp_processor_id()]); | |
200 | if (excp == NULL) { | |
201 | asm volatile ("stw 0,0(%0)\n\ | |
202 | lwz 0,0(1)\n\ | |
203 | stw 0,4(%0)\n\ | |
204 | stmw 2,8(%0)" : : "b" (®s)); | |
205 | regs.nip = regs.link = ((unsigned long *)regs.gpr[1])[1]; | |
206 | regs.msr = get_msr(); | |
207 | regs.ctr = get_ctr(); | |
208 | regs.xer = get_xer(); | |
209 | regs.ccr = get_cr(); | |
210 | regs.trap = 0; | |
211 | excp = ®s; | |
212 | } | |
213 | ||
214 | msr = get_msr(); | |
215 | set_msr(msr & ~0x8000); /* disable interrupts */ | |
216 | xmon_regs[smp_processor_id()] = excp; | |
217 | xmon_enter(); | |
218 | excprint(excp); | |
219 | #ifdef CONFIG_SMP | |
220 | if (test_and_set_bit(smp_processor_id(), &cpus_in_xmon)) | |
221 | for (;;) | |
222 | ; | |
223 | while (test_and_set_bit(0, &got_xmon)) { | |
224 | if (take_xmon == smp_processor_id()) { | |
225 | take_xmon = -1; | |
226 | break; | |
227 | } | |
228 | } | |
229 | /* | |
230 | * XXX: breakpoints are removed while any cpu is in xmon | |
231 | */ | |
232 | #endif /* CONFIG_SMP */ | |
233 | remove_bpts(); | |
234 | #ifdef CONFIG_PMAC_BACKLIGHT | |
235 | if( setjmp(bus_error_jmp) == 0 ) { | |
236 | debugger_fault_handler = handle_fault; | |
237 | sync(); | |
238 | set_backlight_enable(1); | |
239 | set_backlight_level(BACKLIGHT_MAX); | |
240 | sync(); | |
241 | } | |
242 | debugger_fault_handler = NULL; | |
243 | #endif /* CONFIG_PMAC_BACKLIGHT */ | |
244 | cmd = cmds(excp); | |
245 | if (cmd == 's') { | |
246 | xmon_trace[smp_processor_id()] = SSTEP; | |
247 | excp->msr |= 0x400; | |
248 | } else if (at_breakpoint(excp->nip)) { | |
249 | xmon_trace[smp_processor_id()] = BRSTEP; | |
250 | excp->msr |= 0x400; | |
251 | } else { | |
252 | xmon_trace[smp_processor_id()] = 0; | |
253 | insert_bpts(); | |
254 | } | |
255 | xmon_leave(); | |
256 | xmon_regs[smp_processor_id()] = NULL; | |
257 | #ifdef CONFIG_SMP | |
258 | clear_bit(0, &got_xmon); | |
259 | clear_bit(smp_processor_id(), &cpus_in_xmon); | |
260 | #endif /* CONFIG_SMP */ | |
261 | set_msr(msr); /* restore interrupt enable */ | |
262 | get_tb(start_tb[smp_processor_id()]); | |
263 | } | |
264 | ||
265 | irqreturn_t | |
266 | xmon_irq(int irq, void *d, struct pt_regs *regs) | |
267 | { | |
268 | unsigned long flags; | |
269 | local_irq_save(flags); | |
270 | printf("Keyboard interrupt\n"); | |
271 | xmon(regs); | |
272 | local_irq_restore(flags); | |
273 | return IRQ_HANDLED; | |
274 | } | |
275 | ||
276 | int | |
277 | xmon_bpt(struct pt_regs *regs) | |
278 | { | |
279 | struct bpt *bp; | |
280 | ||
281 | bp = at_breakpoint(regs->nip); | |
282 | if (!bp) | |
283 | return 0; | |
284 | if (bp->count) { | |
285 | --bp->count; | |
286 | remove_bpts(); | |
287 | excprint(regs); | |
288 | xmon_trace[smp_processor_id()] = BRSTEP; | |
289 | regs->msr |= 0x400; | |
290 | } else { | |
291 | xmon(regs); | |
292 | } | |
293 | return 1; | |
294 | } | |
295 | ||
296 | int | |
297 | xmon_sstep(struct pt_regs *regs) | |
298 | { | |
299 | if (!xmon_trace[smp_processor_id()]) | |
300 | return 0; | |
301 | if (xmon_trace[smp_processor_id()] == BRSTEP) { | |
302 | xmon_trace[smp_processor_id()] = 0; | |
303 | insert_bpts(); | |
304 | } else { | |
305 | xmon(regs); | |
306 | } | |
307 | return 1; | |
308 | } | |
309 | ||
310 | int | |
311 | xmon_dabr_match(struct pt_regs *regs) | |
312 | { | |
313 | if (dabr.enabled && dabr.count) { | |
314 | --dabr.count; | |
315 | remove_bpts(); | |
316 | excprint(regs); | |
317 | xmon_trace[smp_processor_id()] = BRSTEP; | |
318 | regs->msr |= 0x400; | |
319 | } else { | |
320 | dabr.instr = regs->nip; | |
321 | xmon(regs); | |
322 | } | |
323 | return 1; | |
324 | } | |
325 | ||
326 | int | |
327 | xmon_iabr_match(struct pt_regs *regs) | |
328 | { | |
329 | if (iabr.enabled && iabr.count) { | |
330 | --iabr.count; | |
331 | remove_bpts(); | |
332 | excprint(regs); | |
333 | xmon_trace[smp_processor_id()] = BRSTEP; | |
334 | regs->msr |= 0x400; | |
335 | } else { | |
336 | xmon(regs); | |
337 | } | |
338 | return 1; | |
339 | } | |
340 | ||
341 | static struct bpt * | |
342 | at_breakpoint(unsigned pc) | |
343 | { | |
344 | int i; | |
345 | struct bpt *bp; | |
346 | ||
347 | if (dabr.enabled && pc == dabr.instr) | |
348 | return &dabr; | |
349 | if (iabr.enabled && pc == iabr.address) | |
350 | return &iabr; | |
351 | bp = bpts; | |
352 | for (i = 0; i < NBPTS; ++i, ++bp) | |
353 | if (bp->enabled && pc == bp->address) | |
354 | return bp; | |
355 | return NULL; | |
356 | } | |
357 | ||
358 | static void | |
359 | insert_bpts(void) | |
360 | { | |
361 | int i; | |
362 | struct bpt *bp; | |
363 | ||
364 | bp = bpts; | |
365 | for (i = 0; i < NBPTS; ++i, ++bp) { | |
366 | if (!bp->enabled) | |
367 | continue; | |
368 | if (mread(bp->address, &bp->instr, 4) != 4 | |
369 | || mwrite(bp->address, &bpinstr, 4) != 4) { | |
370 | printf("Couldn't insert breakpoint at %x, disabling\n", | |
371 | bp->address); | |
372 | bp->enabled = 0; | |
373 | } | |
374 | store_inst((void *) bp->address); | |
375 | } | |
376 | #if !defined(CONFIG_8xx) | |
377 | if (dabr.enabled) | |
378 | set_dabr(dabr.address); | |
379 | if (iabr.enabled) | |
380 | set_iabr(iabr.address); | |
381 | #endif | |
382 | } | |
383 | ||
384 | static void | |
385 | remove_bpts(void) | |
386 | { | |
387 | int i; | |
388 | struct bpt *bp; | |
389 | unsigned instr; | |
390 | ||
391 | #if !defined(CONFIG_8xx) | |
392 | set_dabr(0); | |
393 | set_iabr(0); | |
394 | #endif | |
395 | bp = bpts; | |
396 | for (i = 0; i < NBPTS; ++i, ++bp) { | |
397 | if (!bp->enabled) | |
398 | continue; | |
399 | if (mread(bp->address, &instr, 4) == 4 | |
400 | && instr == bpinstr | |
401 | && mwrite(bp->address, &bp->instr, 4) != 4) | |
402 | printf("Couldn't remove breakpoint at %x\n", | |
403 | bp->address); | |
404 | store_inst((void *) bp->address); | |
405 | } | |
406 | } | |
407 | ||
408 | static char *last_cmd; | |
409 | ||
410 | /* Command interpreting routine */ | |
411 | static int | |
412 | cmds(struct pt_regs *excp) | |
413 | { | |
414 | int cmd; | |
415 | ||
416 | last_cmd = NULL; | |
417 | for(;;) { | |
418 | #ifdef CONFIG_SMP | |
419 | printf("%d:", smp_processor_id()); | |
420 | #endif /* CONFIG_SMP */ | |
421 | printf("mon> "); | |
422 | fflush(stdout); | |
423 | flush_input(); | |
424 | termch = 0; | |
425 | cmd = skipbl(); | |
426 | if( cmd == '\n' ) { | |
427 | if (last_cmd == NULL) | |
428 | continue; | |
429 | take_input(last_cmd); | |
430 | last_cmd = NULL; | |
431 | cmd = inchar(); | |
432 | } | |
433 | switch (cmd) { | |
434 | case 'm': | |
435 | cmd = inchar(); | |
436 | switch (cmd) { | |
437 | case 'm': | |
438 | case 's': | |
439 | case 'd': | |
440 | memops(cmd); | |
441 | break; | |
442 | case 'l': | |
443 | memlocate(); | |
444 | break; | |
445 | case 'z': | |
446 | memzcan(); | |
447 | break; | |
448 | default: | |
449 | termch = cmd; | |
450 | memex(); | |
451 | } | |
452 | break; | |
453 | case 'd': | |
454 | dump(); | |
455 | break; | |
456 | case 'l': | |
457 | sysmap_lookup(); | |
458 | break; | |
459 | case 'r': | |
460 | if (excp != NULL) | |
461 | prregs(excp); /* print regs */ | |
462 | break; | |
463 | case 'e': | |
464 | if (excp == NULL) | |
465 | printf("No exception information\n"); | |
466 | else | |
467 | excprint(excp); | |
468 | break; | |
469 | case 'M': | |
470 | print_sysmap(); | |
471 | break; | |
472 | case 'S': | |
473 | super_regs(); | |
474 | break; | |
475 | case 't': | |
476 | backtrace(excp); | |
477 | break; | |
478 | case 'f': | |
479 | cacheflush(); | |
480 | break; | |
481 | case 'h': | |
482 | dump_hash_table(); | |
483 | break; | |
484 | case 's': | |
485 | case 'x': | |
486 | case EOF: | |
487 | return cmd; | |
488 | case '?': | |
489 | printf(help_string); | |
490 | break; | |
491 | default: | |
492 | printf("Unrecognized command: "); | |
493 | if( ' ' < cmd && cmd <= '~' ) | |
494 | putchar(cmd); | |
495 | else | |
496 | printf("\\x%x", cmd); | |
497 | printf(" (type ? for help)\n"); | |
498 | break; | |
499 | case 'b': | |
500 | bpt_cmds(); | |
501 | break; | |
502 | case 'C': | |
503 | csum(); | |
504 | break; | |
505 | #ifdef CONFIG_SMP | |
506 | case 'c': | |
507 | cpu_cmd(); | |
508 | break; | |
509 | #endif /* CONFIG_SMP */ | |
510 | #ifdef CONFIG_BOOTX_TEXT | |
511 | case 'v': | |
512 | vidcmds(); | |
513 | break; | |
514 | #endif | |
515 | case 'z': | |
516 | bootcmds(); | |
517 | break; | |
518 | case 'p': | |
519 | proccall(); | |
520 | break; | |
521 | case 'T': | |
522 | printtime(); | |
523 | break; | |
524 | } | |
525 | } | |
526 | } | |
527 | ||
528 | extern unsigned tb_to_us; | |
529 | ||
530 | #define mulhwu(x,y) \ | |
531 | ({unsigned z; asm ("mulhwu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;}) | |
532 | ||
533 | static void printtime(void) | |
534 | { | |
535 | unsigned int delta; | |
536 | ||
537 | delta = stop_tb[smp_processor_id()][1] | |
538 | - start_tb[smp_processor_id()][1]; | |
539 | delta = mulhwu(tb_to_us, delta); | |
540 | printf("%u.%06u seconds\n", delta / 1000000, delta % 1000000); | |
541 | } | |
542 | ||
543 | static void bootcmds(void) | |
544 | { | |
545 | int cmd; | |
546 | ||
547 | cmd = inchar(); | |
548 | if (cmd == 'r') | |
549 | ppc_md.restart(NULL); | |
550 | else if (cmd == 'h') | |
551 | ppc_md.halt(); | |
552 | else if (cmd == 'p') | |
553 | ppc_md.power_off(); | |
554 | } | |
555 | ||
556 | #ifdef CONFIG_SMP | |
557 | static void cpu_cmd(void) | |
558 | { | |
559 | unsigned cpu; | |
560 | int timeout; | |
561 | int cmd; | |
562 | ||
563 | cmd = inchar(); | |
564 | if (cmd == 'i') { | |
565 | /* interrupt other cpu(s) */ | |
566 | cpu = MSG_ALL_BUT_SELF; | |
567 | if (scanhex(&cpu)) | |
568 | smp_send_xmon_break(cpu); | |
569 | return; | |
570 | } | |
571 | termch = cmd; | |
572 | if (!scanhex(&cpu)) { | |
573 | /* print cpus waiting or in xmon */ | |
574 | printf("cpus stopped:"); | |
575 | for (cpu = 0; cpu < NR_CPUS; ++cpu) { | |
576 | if (test_bit(cpu, &cpus_in_xmon)) { | |
577 | printf(" %d", cpu); | |
578 | if (cpu == smp_processor_id()) | |
579 | printf("*", cpu); | |
580 | } | |
581 | } | |
582 | printf("\n"); | |
583 | return; | |
584 | } | |
585 | /* try to switch to cpu specified */ | |
586 | take_xmon = cpu; | |
587 | timeout = 10000000; | |
588 | while (take_xmon >= 0) { | |
589 | if (--timeout == 0) { | |
590 | /* yes there's a race here */ | |
591 | take_xmon = -1; | |
592 | printf("cpu %u didn't take control\n", cpu); | |
593 | return; | |
594 | } | |
595 | } | |
596 | /* now have to wait to be given control back */ | |
597 | while (test_and_set_bit(0, &got_xmon)) { | |
598 | if (take_xmon == smp_processor_id()) { | |
599 | take_xmon = -1; | |
600 | break; | |
601 | } | |
602 | } | |
603 | } | |
604 | #endif /* CONFIG_SMP */ | |
605 | ||
606 | #ifdef CONFIG_BOOTX_TEXT | |
607 | extern boot_infos_t disp_bi; | |
608 | ||
609 | static void vidcmds(void) | |
610 | { | |
611 | int c = inchar(); | |
612 | unsigned int val, w; | |
613 | extern int boot_text_mapped; | |
614 | ||
615 | if (!boot_text_mapped) | |
616 | return; | |
617 | if (c != '\n' && scanhex(&val)) { | |
618 | switch (c) { | |
619 | case 'd': | |
620 | w = disp_bi.dispDeviceRowBytes | |
621 | / (disp_bi.dispDeviceDepth >> 3); | |
622 | disp_bi.dispDeviceDepth = val; | |
623 | disp_bi.dispDeviceRowBytes = w * (val >> 3); | |
624 | return; | |
625 | case 'p': | |
626 | disp_bi.dispDeviceRowBytes = val; | |
627 | return; | |
628 | case 'w': | |
629 | disp_bi.dispDeviceRect[2] = val; | |
630 | return; | |
631 | case 'h': | |
632 | disp_bi.dispDeviceRect[3] = val; | |
633 | return; | |
634 | } | |
635 | } | |
636 | printf("W = %d (0x%x) H = %d (0x%x) D = %d (0x%x) P = %d (0x%x)\n", | |
637 | disp_bi.dispDeviceRect[2], disp_bi.dispDeviceRect[2], | |
638 | disp_bi.dispDeviceRect[3], disp_bi.dispDeviceRect[3], | |
639 | disp_bi.dispDeviceDepth, disp_bi.dispDeviceDepth, | |
640 | disp_bi.dispDeviceRowBytes, disp_bi.dispDeviceRowBytes); | |
641 | } | |
642 | #endif /* CONFIG_BOOTX_TEXT */ | |
643 | ||
644 | static unsigned short fcstab[256] = { | |
645 | 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, | |
646 | 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, | |
647 | 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, | |
648 | 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, | |
649 | 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, | |
650 | 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, | |
651 | 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, | |
652 | 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, | |
653 | 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, | |
654 | 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, | |
655 | 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, | |
656 | 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, | |
657 | 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, | |
658 | 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, | |
659 | 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, | |
660 | 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, | |
661 | 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, | |
662 | 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, | |
663 | 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, | |
664 | 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, | |
665 | 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, | |
666 | 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, | |
667 | 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, | |
668 | 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, | |
669 | 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, | |
670 | 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, | |
671 | 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, | |
672 | 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, | |
673 | 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, | |
674 | 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, | |
675 | 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, | |
676 | 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 | |
677 | }; | |
678 | ||
679 | #define FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) | |
680 | ||
681 | static void | |
682 | csum(void) | |
683 | { | |
684 | unsigned int i; | |
685 | unsigned short fcs; | |
686 | unsigned char v; | |
687 | ||
688 | if (!scanhex(&adrs)) | |
689 | return; | |
690 | if (!scanhex(&ncsum)) | |
691 | return; | |
692 | fcs = 0xffff; | |
693 | for (i = 0; i < ncsum; ++i) { | |
694 | if (mread(adrs+i, &v, 1) == 0) { | |
695 | printf("csum stopped at %x\n", adrs+i); | |
696 | break; | |
697 | } | |
698 | fcs = FCS(fcs, v); | |
699 | } | |
700 | printf("%x\n", fcs); | |
701 | } | |
702 | ||
703 | static void | |
704 | bpt_cmds(void) | |
705 | { | |
706 | int cmd; | |
707 | unsigned a; | |
708 | int mode, i; | |
709 | struct bpt *bp; | |
710 | ||
711 | cmd = inchar(); | |
712 | switch (cmd) { | |
713 | #if !defined(CONFIG_8xx) | |
714 | case 'd': | |
715 | mode = 7; | |
716 | cmd = inchar(); | |
717 | if (cmd == 'r') | |
718 | mode = 5; | |
719 | else if (cmd == 'w') | |
720 | mode = 6; | |
721 | else | |
722 | termch = cmd; | |
723 | cmd = inchar(); | |
724 | if (cmd == 'p') | |
725 | mode &= ~4; | |
726 | else | |
727 | termch = cmd; | |
728 | dabr.address = 0; | |
729 | dabr.count = 0; | |
730 | dabr.enabled = scanhex(&dabr.address); | |
731 | scanhex(&dabr.count); | |
732 | if (dabr.enabled) | |
733 | dabr.address = (dabr.address & ~7) | mode; | |
734 | break; | |
735 | case 'i': | |
736 | cmd = inchar(); | |
737 | if (cmd == 'p') | |
738 | mode = 2; | |
739 | else | |
740 | mode = 3; | |
741 | iabr.address = 0; | |
742 | iabr.count = 0; | |
743 | iabr.enabled = scanhex(&iabr.address); | |
744 | if (iabr.enabled) | |
745 | iabr.address |= mode; | |
746 | scanhex(&iabr.count); | |
747 | break; | |
748 | #endif | |
749 | case 'c': | |
750 | if (!scanhex(&a)) { | |
751 | /* clear all breakpoints */ | |
752 | for (i = 0; i < NBPTS; ++i) | |
753 | bpts[i].enabled = 0; | |
754 | iabr.enabled = 0; | |
755 | dabr.enabled = 0; | |
756 | printf("All breakpoints cleared\n"); | |
757 | } else { | |
758 | bp = at_breakpoint(a); | |
759 | if (bp == 0) { | |
760 | printf("No breakpoint at %x\n", a); | |
761 | } else { | |
762 | bp->enabled = 0; | |
763 | } | |
764 | } | |
765 | break; | |
766 | default: | |
767 | termch = cmd; | |
768 | if (!scanhex(&a)) { | |
769 | /* print all breakpoints */ | |
770 | printf("type address count\n"); | |
771 | if (dabr.enabled) { | |
772 | printf("data %.8x %8x [", dabr.address & ~7, | |
773 | dabr.count); | |
774 | if (dabr.address & 1) | |
775 | printf("r"); | |
776 | if (dabr.address & 2) | |
777 | printf("w"); | |
778 | if (!(dabr.address & 4)) | |
779 | printf("p"); | |
780 | printf("]\n"); | |
781 | } | |
782 | if (iabr.enabled) | |
783 | printf("inst %.8x %8x\n", iabr.address & ~3, | |
784 | iabr.count); | |
785 | for (bp = bpts; bp < &bpts[NBPTS]; ++bp) | |
786 | if (bp->enabled) | |
787 | printf("trap %.8x %8x\n", bp->address, | |
788 | bp->count); | |
789 | break; | |
790 | } | |
791 | bp = at_breakpoint(a); | |
792 | if (bp == 0) { | |
793 | for (bp = bpts; bp < &bpts[NBPTS]; ++bp) | |
794 | if (!bp->enabled) | |
795 | break; | |
796 | if (bp >= &bpts[NBPTS]) { | |
797 | printf("Sorry, no free breakpoints\n"); | |
798 | break; | |
799 | } | |
800 | } | |
801 | bp->enabled = 1; | |
802 | bp->address = a; | |
803 | bp->count = 0; | |
804 | scanhex(&bp->count); | |
805 | break; | |
806 | } | |
807 | } | |
808 | ||
809 | static void | |
810 | backtrace(struct pt_regs *excp) | |
811 | { | |
812 | unsigned sp; | |
813 | unsigned stack[2]; | |
814 | struct pt_regs regs; | |
815 | extern char ret_from_except, ret_from_except_full, ret_from_syscall; | |
816 | ||
817 | printf("backtrace:\n"); | |
818 | ||
819 | if (excp != NULL) | |
820 | sp = excp->gpr[1]; | |
821 | else | |
822 | sp = getsp(); | |
823 | scanhex(&sp); | |
824 | scannl(); | |
825 | for (; sp != 0; sp = stack[0]) { | |
826 | if (mread(sp, stack, sizeof(stack)) != sizeof(stack)) | |
827 | break; | |
828 | pretty_print_addr(stack[1]); | |
829 | printf(" "); | |
830 | if (stack[1] == (unsigned) &ret_from_except | |
831 | || stack[1] == (unsigned) &ret_from_except_full | |
832 | || stack[1] == (unsigned) &ret_from_syscall) { | |
833 | if (mread(sp+16, ®s, sizeof(regs)) != sizeof(regs)) | |
834 | break; | |
835 | printf("\nexception:%x [%x] %x ", regs.trap, sp+16, | |
836 | regs.nip); | |
837 | sp = regs.gpr[1]; | |
838 | if (mread(sp, stack, sizeof(stack)) != sizeof(stack)) | |
839 | break; | |
840 | } | |
841 | printf("\n"); | |
842 | } | |
843 | } | |
844 | ||
845 | int | |
846 | getsp(void) | |
847 | { | |
848 | int x; | |
849 | ||
850 | asm("mr %0,1" : "=r" (x) :); | |
851 | return x; | |
852 | } | |
853 | ||
854 | void | |
855 | excprint(struct pt_regs *fp) | |
856 | { | |
857 | int trap; | |
858 | ||
859 | #ifdef CONFIG_SMP | |
860 | printf("cpu %d: ", smp_processor_id()); | |
861 | #endif /* CONFIG_SMP */ | |
862 | printf("vector: %x at pc = ", fp->trap); | |
863 | pretty_print_addr(fp->nip); | |
864 | printf(", lr = "); | |
865 | pretty_print_addr(fp->link); | |
866 | printf("\nmsr = %x, sp = %x [%x]\n", fp->msr, fp->gpr[1], fp); | |
867 | trap = TRAP(fp); | |
868 | if (trap == 0x300 || trap == 0x600) | |
869 | printf("dar = %x, dsisr = %x\n", fp->dar, fp->dsisr); | |
870 | if (current) | |
871 | printf("current = %x, pid = %d, comm = %s\n", | |
872 | current, current->pid, current->comm); | |
873 | } | |
874 | ||
875 | void | |
876 | prregs(struct pt_regs *fp) | |
877 | { | |
878 | int n; | |
879 | unsigned base; | |
880 | ||
881 | if (scanhex(&base)) | |
882 | fp = (struct pt_regs *) base; | |
883 | for (n = 0; n < 32; ++n) { | |
884 | printf("R%.2d = %.8x%s", n, fp->gpr[n], | |
885 | (n & 3) == 3? "\n": " "); | |
886 | if (n == 12 && !FULL_REGS(fp)) { | |
887 | printf("\n"); | |
888 | break; | |
889 | } | |
890 | } | |
891 | printf("pc = %.8x msr = %.8x lr = %.8x cr = %.8x\n", | |
892 | fp->nip, fp->msr, fp->link, fp->ccr); | |
893 | printf("ctr = %.8x xer = %.8x trap = %4x\n", | |
894 | fp->ctr, fp->xer, fp->trap); | |
895 | } | |
896 | ||
897 | void | |
898 | cacheflush(void) | |
899 | { | |
900 | int cmd; | |
901 | unsigned nflush; | |
902 | ||
903 | cmd = inchar(); | |
904 | if (cmd != 'i') | |
905 | termch = cmd; | |
906 | scanhex(&adrs); | |
907 | if (termch != '\n') | |
908 | termch = 0; | |
909 | nflush = 1; | |
910 | scanhex(&nflush); | |
911 | nflush = (nflush + 31) / 32; | |
912 | if (cmd != 'i') { | |
913 | for (; nflush > 0; --nflush, adrs += 0x20) | |
914 | cflush((void *) adrs); | |
915 | } else { | |
916 | for (; nflush > 0; --nflush, adrs += 0x20) | |
917 | cinval((void *) adrs); | |
918 | } | |
919 | } | |
920 | ||
921 | unsigned int | |
922 | read_spr(int n) | |
923 | { | |
924 | unsigned int instrs[2]; | |
925 | int (*code)(void); | |
926 | ||
927 | instrs[0] = 0x7c6002a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6); | |
928 | instrs[1] = 0x4e800020; | |
929 | store_inst(instrs); | |
930 | store_inst(instrs+1); | |
931 | code = (int (*)(void)) instrs; | |
932 | return code(); | |
933 | } | |
934 | ||
935 | void | |
936 | write_spr(int n, unsigned int val) | |
937 | { | |
938 | unsigned int instrs[2]; | |
939 | int (*code)(unsigned int); | |
940 | ||
941 | instrs[0] = 0x7c6003a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6); | |
942 | instrs[1] = 0x4e800020; | |
943 | store_inst(instrs); | |
944 | store_inst(instrs+1); | |
945 | code = (int (*)(unsigned int)) instrs; | |
946 | code(val); | |
947 | } | |
948 | ||
949 | static unsigned int regno; | |
950 | extern char exc_prolog; | |
951 | extern char dec_exc; | |
952 | ||
953 | void | |
954 | print_sysmap(void) | |
955 | { | |
956 | extern char *sysmap; | |
957 | if ( sysmap ) { | |
958 | printf("System.map: \n"); | |
959 | if( setjmp(bus_error_jmp) == 0 ) { | |
960 | debugger_fault_handler = handle_fault; | |
961 | sync(); | |
962 | xmon_puts(sysmap); | |
963 | sync(); | |
964 | } | |
965 | debugger_fault_handler = NULL; | |
966 | } | |
967 | else | |
968 | printf("No System.map\n"); | |
969 | } | |
970 | ||
971 | void | |
972 | super_regs(void) | |
973 | { | |
974 | int i, cmd; | |
975 | unsigned val; | |
976 | ||
977 | cmd = skipbl(); | |
978 | if (cmd == '\n') { | |
979 | printf("msr = %x, pvr = %x\n", get_msr(), get_pvr()); | |
980 | printf("sprg0-3 = %x %x %x %x\n", get_sprg0(), get_sprg1(), | |
981 | get_sprg2(), get_sprg3()); | |
982 | printf("srr0 = %x, srr1 = %x\n", get_srr0(), get_srr1()); | |
983 | #ifdef CONFIG_PPC_STD_MMU | |
984 | printf("sr0-15 ="); | |
985 | for (i = 0; i < 16; ++i) | |
986 | printf(" %x", get_sr(i)); | |
987 | printf("\n"); | |
988 | #endif | |
989 | asm("mr %0,1" : "=r" (i) :); | |
990 | printf("sp = %x ", i); | |
991 | asm("mr %0,2" : "=r" (i) :); | |
992 | printf("toc = %x\n", i); | |
993 | return; | |
994 | } | |
995 | ||
996 | scanhex(®no); | |
997 | switch (cmd) { | |
998 | case 'w': | |
999 | val = read_spr(regno); | |
1000 | scanhex(&val); | |
1001 | write_spr(regno, val); | |
1002 | /* fall through */ | |
1003 | case 'r': | |
1004 | printf("spr %x = %x\n", regno, read_spr(regno)); | |
1005 | break; | |
1006 | case 's': | |
1007 | val = get_sr(regno); | |
1008 | scanhex(&val); | |
1009 | set_sr(regno, val); | |
1010 | break; | |
1011 | case 'm': | |
1012 | val = get_msr(); | |
1013 | scanhex(&val); | |
1014 | set_msr(val); | |
1015 | break; | |
1016 | } | |
1017 | scannl(); | |
1018 | } | |
1019 | ||
1020 | #ifndef CONFIG_PPC_STD_MMU | |
1021 | static void | |
1022 | dump_hash_table(void) | |
1023 | { | |
1024 | printf("This CPU doesn't have a hash table.\n"); | |
1025 | } | |
1026 | #else | |
1027 | ||
1028 | #ifndef CONFIG_PPC64BRIDGE | |
1029 | static void | |
1030 | dump_hash_table_seg(unsigned seg, unsigned start, unsigned end) | |
1031 | { | |
1032 | extern void *Hash; | |
1033 | extern unsigned long Hash_size; | |
1034 | unsigned *htab = Hash; | |
1035 | unsigned hsize = Hash_size; | |
1036 | unsigned v, hmask, va, last_va = 0; | |
1037 | int found, last_found, i; | |
1038 | unsigned *hg, w1, last_w2 = 0, last_va0 = 0; | |
1039 | ||
1040 | last_found = 0; | |
1041 | hmask = hsize / 64 - 1; | |
1042 | va = start; | |
1043 | start = (start >> 12) & 0xffff; | |
1044 | end = (end >> 12) & 0xffff; | |
1045 | for (v = start; v < end; ++v) { | |
1046 | found = 0; | |
1047 | hg = htab + (((v ^ seg) & hmask) * 16); | |
1048 | w1 = 0x80000000 | (seg << 7) | (v >> 10); | |
1049 | for (i = 0; i < 8; ++i, hg += 2) { | |
1050 | if (*hg == w1) { | |
1051 | found = 1; | |
1052 | break; | |
1053 | } | |
1054 | } | |
1055 | if (!found) { | |
1056 | w1 ^= 0x40; | |
1057 | hg = htab + ((~(v ^ seg) & hmask) * 16); | |
1058 | for (i = 0; i < 8; ++i, hg += 2) { | |
1059 | if (*hg == w1) { | |
1060 | found = 1; | |
1061 | break; | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | if (!(last_found && found && (hg[1] & ~0x180) == last_w2 + 4096)) { | |
1066 | if (last_found) { | |
1067 | if (last_va != last_va0) | |
1068 | printf(" ... %x", last_va); | |
1069 | printf("\n"); | |
1070 | } | |
1071 | if (found) { | |
1072 | printf("%x to %x", va, hg[1]); | |
1073 | last_va0 = va; | |
1074 | } | |
1075 | last_found = found; | |
1076 | } | |
1077 | if (found) { | |
1078 | last_w2 = hg[1] & ~0x180; | |
1079 | last_va = va; | |
1080 | } | |
1081 | va += 4096; | |
1082 | } | |
1083 | if (last_found) | |
1084 | printf(" ... %x\n", last_va); | |
1085 | } | |
1086 | ||
1087 | #else /* CONFIG_PPC64BRIDGE */ | |
1088 | static void | |
1089 | dump_hash_table_seg(unsigned seg, unsigned start, unsigned end) | |
1090 | { | |
1091 | extern void *Hash; | |
1092 | extern unsigned long Hash_size; | |
1093 | unsigned *htab = Hash; | |
1094 | unsigned hsize = Hash_size; | |
1095 | unsigned v, hmask, va, last_va; | |
1096 | int found, last_found, i; | |
1097 | unsigned *hg, w1, last_w2, last_va0; | |
1098 | ||
1099 | last_found = 0; | |
1100 | hmask = hsize / 128 - 1; | |
1101 | va = start; | |
1102 | start = (start >> 12) & 0xffff; | |
1103 | end = (end >> 12) & 0xffff; | |
1104 | for (v = start; v < end; ++v) { | |
1105 | found = 0; | |
1106 | hg = htab + (((v ^ seg) & hmask) * 32); | |
1107 | w1 = 1 | (seg << 12) | ((v & 0xf800) >> 4); | |
1108 | for (i = 0; i < 8; ++i, hg += 4) { | |
1109 | if (hg[1] == w1) { | |
1110 | found = 1; | |
1111 | break; | |
1112 | } | |
1113 | } | |
1114 | if (!found) { | |
1115 | w1 ^= 2; | |
1116 | hg = htab + ((~(v ^ seg) & hmask) * 32); | |
1117 | for (i = 0; i < 8; ++i, hg += 4) { | |
1118 | if (hg[1] == w1) { | |
1119 | found = 1; | |
1120 | break; | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | if (!(last_found && found && (hg[3] & ~0x180) == last_w2 + 4096)) { | |
1125 | if (last_found) { | |
1126 | if (last_va != last_va0) | |
1127 | printf(" ... %x", last_va); | |
1128 | printf("\n"); | |
1129 | } | |
1130 | if (found) { | |
1131 | printf("%x to %x", va, hg[3]); | |
1132 | last_va0 = va; | |
1133 | } | |
1134 | last_found = found; | |
1135 | } | |
1136 | if (found) { | |
1137 | last_w2 = hg[3] & ~0x180; | |
1138 | last_va = va; | |
1139 | } | |
1140 | va += 4096; | |
1141 | } | |
1142 | if (last_found) | |
1143 | printf(" ... %x\n", last_va); | |
1144 | } | |
1145 | #endif /* CONFIG_PPC64BRIDGE */ | |
1146 | ||
1147 | static unsigned hash_ctx; | |
1148 | static unsigned hash_start; | |
1149 | static unsigned hash_end; | |
1150 | ||
1151 | static void | |
1152 | dump_hash_table(void) | |
1153 | { | |
1154 | int seg; | |
1155 | unsigned seg_start, seg_end; | |
1156 | ||
1157 | hash_ctx = 0; | |
1158 | hash_start = 0; | |
1159 | hash_end = 0xfffff000; | |
1160 | scanhex(&hash_ctx); | |
1161 | scanhex(&hash_start); | |
1162 | scanhex(&hash_end); | |
1163 | printf("Mappings for context %x\n", hash_ctx); | |
1164 | seg_start = hash_start; | |
1165 | for (seg = hash_start >> 28; seg <= hash_end >> 28; ++seg) { | |
1166 | seg_end = (seg << 28) | 0x0ffff000; | |
1167 | if (seg_end > hash_end) | |
1168 | seg_end = hash_end; | |
1169 | dump_hash_table_seg((hash_ctx << 4) + (seg * 0x111), | |
1170 | seg_start, seg_end); | |
1171 | seg_start = seg_end + 0x1000; | |
1172 | } | |
1173 | } | |
1174 | #endif /* CONFIG_PPC_STD_MMU */ | |
1175 | ||
1176 | /* | |
1177 | * Stuff for reading and writing memory safely | |
1178 | */ | |
1179 | ||
1180 | int | |
1181 | mread(unsigned adrs, void *buf, int size) | |
1182 | { | |
1183 | volatile int n; | |
1184 | char *p, *q; | |
1185 | ||
1186 | n = 0; | |
1187 | if( setjmp(bus_error_jmp) == 0 ){ | |
1188 | debugger_fault_handler = handle_fault; | |
1189 | sync(); | |
1190 | p = (char *) adrs; | |
1191 | q = (char *) buf; | |
1192 | switch (size) { | |
1193 | case 2: *(short *)q = *(short *)p; break; | |
1194 | case 4: *(int *)q = *(int *)p; break; | |
1195 | default: | |
1196 | for( ; n < size; ++n ) { | |
1197 | *q++ = *p++; | |
1198 | sync(); | |
1199 | } | |
1200 | } | |
1201 | sync(); | |
1202 | /* wait a little while to see if we get a machine check */ | |
1203 | __delay(200); | |
1204 | n = size; | |
1205 | } | |
1206 | debugger_fault_handler = NULL; | |
1207 | return n; | |
1208 | } | |
1209 | ||
1210 | int | |
1211 | mwrite(unsigned adrs, void *buf, int size) | |
1212 | { | |
1213 | volatile int n; | |
1214 | char *p, *q; | |
1215 | ||
1216 | n = 0; | |
1217 | if( setjmp(bus_error_jmp) == 0 ){ | |
1218 | debugger_fault_handler = handle_fault; | |
1219 | sync(); | |
1220 | p = (char *) adrs; | |
1221 | q = (char *) buf; | |
1222 | switch (size) { | |
1223 | case 2: *(short *)p = *(short *)q; break; | |
1224 | case 4: *(int *)p = *(int *)q; break; | |
1225 | default: | |
1226 | for( ; n < size; ++n ) { | |
1227 | *p++ = *q++; | |
1228 | sync(); | |
1229 | } | |
1230 | } | |
1231 | sync(); | |
1232 | n = size; | |
1233 | } else { | |
1234 | printf("*** Error writing address %x\n", adrs + n); | |
1235 | } | |
1236 | debugger_fault_handler = NULL; | |
1237 | return n; | |
1238 | } | |
1239 | ||
1240 | static int fault_type; | |
1241 | static int fault_except; | |
1242 | static char *fault_chars[] = { "--", "**", "##" }; | |
1243 | ||
1244 | static void | |
1245 | handle_fault(struct pt_regs *regs) | |
1246 | { | |
1247 | fault_except = TRAP(regs); | |
1248 | fault_type = TRAP(regs) == 0x200? 0: TRAP(regs) == 0x300? 1: 2; | |
1249 | longjmp(bus_error_jmp, 1); | |
1250 | } | |
1251 | ||
1252 | #define SWAP(a, b, t) ((t) = (a), (a) = (b), (b) = (t)) | |
1253 | ||
1254 | void | |
1255 | byterev(unsigned char *val, int size) | |
1256 | { | |
1257 | int t; | |
1258 | ||
1259 | switch (size) { | |
1260 | case 2: | |
1261 | SWAP(val[0], val[1], t); | |
1262 | break; | |
1263 | case 4: | |
1264 | SWAP(val[0], val[3], t); | |
1265 | SWAP(val[1], val[2], t); | |
1266 | break; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | static int brev; | |
1271 | static int mnoread; | |
1272 | ||
1273 | void | |
1274 | memex(void) | |
1275 | { | |
1276 | int cmd, inc, i, nslash; | |
1277 | unsigned n; | |
1278 | unsigned char val[4]; | |
1279 | ||
1280 | last_cmd = "m\n"; | |
1281 | scanhex(&adrs); | |
1282 | while ((cmd = skipbl()) != '\n') { | |
1283 | switch( cmd ){ | |
1284 | case 'b': size = 1; break; | |
1285 | case 'w': size = 2; break; | |
1286 | case 'l': size = 4; break; | |
1287 | case 'r': brev = !brev; break; | |
1288 | case 'n': mnoread = 1; break; | |
1289 | case '.': mnoread = 0; break; | |
1290 | } | |
1291 | } | |
1292 | if( size <= 0 ) | |
1293 | size = 1; | |
1294 | else if( size > 4 ) | |
1295 | size = 4; | |
1296 | for(;;){ | |
1297 | if (!mnoread) | |
1298 | n = mread(adrs, val, size); | |
1299 | printf("%.8x%c", adrs, brev? 'r': ' '); | |
1300 | if (!mnoread) { | |
1301 | if (brev) | |
1302 | byterev(val, size); | |
1303 | putchar(' '); | |
1304 | for (i = 0; i < n; ++i) | |
1305 | printf("%.2x", val[i]); | |
1306 | for (; i < size; ++i) | |
1307 | printf("%s", fault_chars[fault_type]); | |
1308 | } | |
1309 | putchar(' '); | |
1310 | inc = size; | |
1311 | nslash = 0; | |
1312 | for(;;){ | |
1313 | if( scanhex(&n) ){ | |
1314 | for (i = 0; i < size; ++i) | |
1315 | val[i] = n >> (i * 8); | |
1316 | if (!brev) | |
1317 | byterev(val, size); | |
1318 | mwrite(adrs, val, size); | |
1319 | inc = size; | |
1320 | } | |
1321 | cmd = skipbl(); | |
1322 | if (cmd == '\n') | |
1323 | break; | |
1324 | inc = 0; | |
1325 | switch (cmd) { | |
1326 | case '\'': | |
1327 | for(;;){ | |
1328 | n = inchar(); | |
1329 | if( n == '\\' ) | |
1330 | n = bsesc(); | |
1331 | else if( n == '\'' ) | |
1332 | break; | |
1333 | for (i = 0; i < size; ++i) | |
1334 | val[i] = n >> (i * 8); | |
1335 | if (!brev) | |
1336 | byterev(val, size); | |
1337 | mwrite(adrs, val, size); | |
1338 | adrs += size; | |
1339 | } | |
1340 | adrs -= size; | |
1341 | inc = size; | |
1342 | break; | |
1343 | case ',': | |
1344 | adrs += size; | |
1345 | break; | |
1346 | case '.': | |
1347 | mnoread = 0; | |
1348 | break; | |
1349 | case ';': | |
1350 | break; | |
1351 | case 'x': | |
1352 | case EOF: | |
1353 | scannl(); | |
1354 | return; | |
1355 | case 'b': | |
1356 | case 'v': | |
1357 | size = 1; | |
1358 | break; | |
1359 | case 'w': | |
1360 | size = 2; | |
1361 | break; | |
1362 | case 'l': | |
1363 | size = 4; | |
1364 | break; | |
1365 | case '^': | |
1366 | adrs -= size; | |
1367 | break; | |
1368 | break; | |
1369 | case '/': | |
1370 | if (nslash > 0) | |
1371 | adrs -= 1 << nslash; | |
1372 | else | |
1373 | nslash = 0; | |
1374 | nslash += 4; | |
1375 | adrs += 1 << nslash; | |
1376 | break; | |
1377 | case '\\': | |
1378 | if (nslash < 0) | |
1379 | adrs += 1 << -nslash; | |
1380 | else | |
1381 | nslash = 0; | |
1382 | nslash -= 4; | |
1383 | adrs -= 1 << -nslash; | |
1384 | break; | |
1385 | case 'm': | |
1386 | scanhex(&adrs); | |
1387 | break; | |
1388 | case 'n': | |
1389 | mnoread = 1; | |
1390 | break; | |
1391 | case 'r': | |
1392 | brev = !brev; | |
1393 | break; | |
1394 | case '<': | |
1395 | n = size; | |
1396 | scanhex(&n); | |
1397 | adrs -= n; | |
1398 | break; | |
1399 | case '>': | |
1400 | n = size; | |
1401 | scanhex(&n); | |
1402 | adrs += n; | |
1403 | break; | |
1404 | } | |
1405 | } | |
1406 | adrs += inc; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | int | |
1411 | bsesc(void) | |
1412 | { | |
1413 | int c; | |
1414 | ||
1415 | c = inchar(); | |
1416 | switch( c ){ | |
1417 | case 'n': c = '\n'; break; | |
1418 | case 'r': c = '\r'; break; | |
1419 | case 'b': c = '\b'; break; | |
1420 | case 't': c = '\t'; break; | |
1421 | } | |
1422 | return c; | |
1423 | } | |
1424 | ||
1425 | void | |
1426 | dump(void) | |
1427 | { | |
1428 | int c; | |
1429 | ||
1430 | c = inchar(); | |
1431 | if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n') | |
1432 | termch = c; | |
1433 | scanhex(&adrs); | |
1434 | if( termch != '\n') | |
1435 | termch = 0; | |
1436 | if( c == 'i' ){ | |
1437 | scanhex(&nidump); | |
1438 | if( nidump == 0 ) | |
1439 | nidump = 16; | |
1440 | adrs += ppc_inst_dump(adrs, nidump); | |
1441 | last_cmd = "di\n"; | |
1442 | } else { | |
1443 | scanhex(&ndump); | |
1444 | if( ndump == 0 ) | |
1445 | ndump = 64; | |
1446 | prdump(adrs, ndump); | |
1447 | adrs += ndump; | |
1448 | last_cmd = "d\n"; | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | void | |
1453 | prdump(unsigned adrs, int ndump) | |
1454 | { | |
1455 | register int n, m, c, r, nr; | |
1456 | unsigned char temp[16]; | |
1457 | ||
1458 | for( n = ndump; n > 0; ){ | |
1459 | printf("%.8x", adrs); | |
1460 | putchar(' '); | |
1461 | r = n < 16? n: 16; | |
1462 | nr = mread(adrs, temp, r); | |
1463 | adrs += nr; | |
1464 | for( m = 0; m < r; ++m ){ | |
1465 | putchar((m & 3) == 0 && m > 0? '.': ' '); | |
1466 | if( m < nr ) | |
1467 | printf("%.2x", temp[m]); | |
1468 | else | |
1469 | printf("%s", fault_chars[fault_type]); | |
1470 | } | |
1471 | for(; m < 16; ++m ) | |
1472 | printf(" "); | |
1473 | printf(" |"); | |
1474 | for( m = 0; m < r; ++m ){ | |
1475 | if( m < nr ){ | |
1476 | c = temp[m]; | |
1477 | putchar(' ' <= c && c <= '~'? c: '.'); | |
1478 | } else | |
1479 | putchar(' '); | |
1480 | } | |
1481 | n -= r; | |
1482 | for(; m < 16; ++m ) | |
1483 | putchar(' '); | |
1484 | printf("|\n"); | |
1485 | if( nr < r ) | |
1486 | break; | |
1487 | } | |
1488 | } | |
1489 | ||
1490 | int | |
1491 | ppc_inst_dump(unsigned adr, int count) | |
1492 | { | |
1493 | int nr, dotted; | |
1494 | unsigned first_adr; | |
1495 | unsigned long inst, last_inst = 0; | |
1496 | unsigned char val[4]; | |
1497 | ||
1498 | dotted = 0; | |
1499 | for (first_adr = adr; count > 0; --count, adr += 4){ | |
1500 | nr = mread(adr, val, 4); | |
1501 | if( nr == 0 ){ | |
1502 | const char *x = fault_chars[fault_type]; | |
1503 | printf("%.8x %s%s%s%s\n", adr, x, x, x, x); | |
1504 | break; | |
1505 | } | |
1506 | inst = GETWORD(val); | |
1507 | if (adr > first_adr && inst == last_inst) { | |
1508 | if (!dotted) { | |
1509 | printf(" ...\n"); | |
1510 | dotted = 1; | |
1511 | } | |
1512 | continue; | |
1513 | } | |
1514 | dotted = 0; | |
1515 | last_inst = inst; | |
1516 | printf("%.8x ", adr); | |
1517 | printf("%.8x\t", inst); | |
1518 | print_insn_big_powerpc(stdout, inst, adr); /* always returns 4 */ | |
1519 | printf("\n"); | |
1520 | } | |
1521 | return adr - first_adr; | |
1522 | } | |
1523 | ||
1524 | void | |
1525 | print_address(unsigned addr) | |
1526 | { | |
1527 | printf("0x%x", addr); | |
1528 | } | |
1529 | ||
1530 | /* | |
1531 | * Memory operations - move, set, print differences | |
1532 | */ | |
1533 | static unsigned mdest; /* destination address */ | |
1534 | static unsigned msrc; /* source address */ | |
1535 | static unsigned mval; /* byte value to set memory to */ | |
1536 | static unsigned mcount; /* # bytes to affect */ | |
1537 | static unsigned mdiffs; /* max # differences to print */ | |
1538 | ||
1539 | void | |
1540 | memops(int cmd) | |
1541 | { | |
1542 | scanhex(&mdest); | |
1543 | if( termch != '\n' ) | |
1544 | termch = 0; | |
1545 | scanhex(cmd == 's'? &mval: &msrc); | |
1546 | if( termch != '\n' ) | |
1547 | termch = 0; | |
1548 | scanhex(&mcount); | |
1549 | switch( cmd ){ | |
1550 | case 'm': | |
1551 | memmove((void *)mdest, (void *)msrc, mcount); | |
1552 | break; | |
1553 | case 's': | |
1554 | memset((void *)mdest, mval, mcount); | |
1555 | break; | |
1556 | case 'd': | |
1557 | if( termch != '\n' ) | |
1558 | termch = 0; | |
1559 | scanhex(&mdiffs); | |
1560 | memdiffs((unsigned char *)mdest, (unsigned char *)msrc, mcount, mdiffs); | |
1561 | break; | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | void | |
1566 | memdiffs(unsigned char *p1, unsigned char *p2, unsigned nb, unsigned maxpr) | |
1567 | { | |
1568 | unsigned n, prt; | |
1569 | ||
1570 | prt = 0; | |
1571 | for( n = nb; n > 0; --n ) | |
1572 | if( *p1++ != *p2++ ) | |
1573 | if( ++prt <= maxpr ) | |
1574 | printf("%.8x %.2x # %.8x %.2x\n", (unsigned)p1 - 1, | |
1575 | p1[-1], (unsigned)p2 - 1, p2[-1]); | |
1576 | if( prt > maxpr ) | |
1577 | printf("Total of %d differences\n", prt); | |
1578 | } | |
1579 | ||
1580 | static unsigned mend; | |
1581 | static unsigned mask; | |
1582 | ||
1583 | void | |
1584 | memlocate(void) | |
1585 | { | |
1586 | unsigned a, n; | |
1587 | unsigned char val[4]; | |
1588 | ||
1589 | last_cmd = "ml"; | |
1590 | scanhex(&mdest); | |
1591 | if (termch != '\n') { | |
1592 | termch = 0; | |
1593 | scanhex(&mend); | |
1594 | if (termch != '\n') { | |
1595 | termch = 0; | |
1596 | scanhex(&mval); | |
1597 | mask = ~0; | |
1598 | if (termch != '\n') termch = 0; | |
1599 | scanhex(&mask); | |
1600 | } | |
1601 | } | |
1602 | n = 0; | |
1603 | for (a = mdest; a < mend; a += 4) { | |
1604 | if (mread(a, val, 4) == 4 | |
1605 | && ((GETWORD(val) ^ mval) & mask) == 0) { | |
1606 | printf("%.8x: %.8x\n", a, GETWORD(val)); | |
1607 | if (++n >= 10) | |
1608 | break; | |
1609 | } | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | static unsigned mskip = 0x1000; | |
1614 | static unsigned mlim = 0xffffffff; | |
1615 | ||
1616 | void | |
1617 | memzcan(void) | |
1618 | { | |
1619 | unsigned char v; | |
1620 | unsigned a; | |
1621 | int ok, ook; | |
1622 | ||
1623 | scanhex(&mdest); | |
1624 | if (termch != '\n') termch = 0; | |
1625 | scanhex(&mskip); | |
1626 | if (termch != '\n') termch = 0; | |
1627 | scanhex(&mlim); | |
1628 | ook = 0; | |
1629 | for (a = mdest; a < mlim; a += mskip) { | |
1630 | ok = mread(a, &v, 1); | |
1631 | if (ok && !ook) { | |
1632 | printf("%.8x .. ", a); | |
1633 | fflush(stdout); | |
1634 | } else if (!ok && ook) | |
1635 | printf("%.8x\n", a - mskip); | |
1636 | ook = ok; | |
1637 | if (a + mskip < a) | |
1638 | break; | |
1639 | } | |
1640 | if (ook) | |
1641 | printf("%.8x\n", a - mskip); | |
1642 | } | |
1643 | ||
1644 | void proccall(void) | |
1645 | { | |
1646 | unsigned int args[8]; | |
1647 | unsigned int ret; | |
1648 | int i; | |
1649 | typedef unsigned int (*callfunc_t)(unsigned int, unsigned int, | |
1650 | unsigned int, unsigned int, unsigned int, | |
1651 | unsigned int, unsigned int, unsigned int); | |
1652 | callfunc_t func; | |
1653 | ||
1654 | scanhex(&adrs); | |
1655 | if (termch != '\n') | |
1656 | termch = 0; | |
1657 | for (i = 0; i < 8; ++i) | |
1658 | args[i] = 0; | |
1659 | for (i = 0; i < 8; ++i) { | |
1660 | if (!scanhex(&args[i]) || termch == '\n') | |
1661 | break; | |
1662 | termch = 0; | |
1663 | } | |
1664 | func = (callfunc_t) adrs; | |
1665 | ret = 0; | |
1666 | if (setjmp(bus_error_jmp) == 0) { | |
1667 | debugger_fault_handler = handle_fault; | |
1668 | sync(); | |
1669 | ret = func(args[0], args[1], args[2], args[3], | |
1670 | args[4], args[5], args[6], args[7]); | |
1671 | sync(); | |
1672 | printf("return value is %x\n", ret); | |
1673 | } else { | |
1674 | printf("*** %x exception occurred\n", fault_except); | |
1675 | } | |
1676 | debugger_fault_handler = NULL; | |
1677 | } | |
1678 | ||
1679 | /* Input scanning routines */ | |
1680 | int | |
1681 | skipbl(void) | |
1682 | { | |
1683 | int c; | |
1684 | ||
1685 | if( termch != 0 ){ | |
1686 | c = termch; | |
1687 | termch = 0; | |
1688 | } else | |
1689 | c = inchar(); | |
1690 | while( c == ' ' || c == '\t' ) | |
1691 | c = inchar(); | |
1692 | return c; | |
1693 | } | |
1694 | ||
1695 | #define N_PTREGS 44 | |
1696 | static char *regnames[N_PTREGS] = { | |
1697 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
1698 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
1699 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
1700 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
1701 | "pc", "msr", "or3", "ctr", "lr", "xer", "ccr", "mq", | |
1702 | "trap", "dar", "dsisr", "res" | |
1703 | }; | |
1704 | ||
1705 | int | |
1706 | scanhex(unsigned *vp) | |
1707 | { | |
1708 | int c, d; | |
1709 | unsigned v; | |
1710 | ||
1711 | c = skipbl(); | |
1712 | if (c == '%') { | |
1713 | /* parse register name */ | |
1714 | char regname[8]; | |
1715 | int i; | |
1716 | ||
1717 | for (i = 0; i < sizeof(regname) - 1; ++i) { | |
1718 | c = inchar(); | |
1719 | if (!isalnum(c)) { | |
1720 | termch = c; | |
1721 | break; | |
1722 | } | |
1723 | regname[i] = c; | |
1724 | } | |
1725 | regname[i] = 0; | |
1726 | for (i = 0; i < N_PTREGS; ++i) { | |
1727 | if (strcmp(regnames[i], regname) == 0) { | |
1728 | unsigned *rp = (unsigned *) | |
1729 | xmon_regs[smp_processor_id()]; | |
1730 | if (rp == NULL) { | |
1731 | printf("regs not available\n"); | |
1732 | return 0; | |
1733 | } | |
1734 | *vp = rp[i]; | |
1735 | return 1; | |
1736 | } | |
1737 | } | |
1738 | printf("invalid register name '%%%s'\n", regname); | |
1739 | return 0; | |
1740 | } else if (c == '$') { | |
1741 | static char symname[64]; | |
1742 | int i; | |
1743 | for (i=0; i<63; i++) { | |
1744 | c = inchar(); | |
1745 | if (isspace(c)) { | |
1746 | termch = c; | |
1747 | break; | |
1748 | } | |
1749 | symname[i] = c; | |
1750 | } | |
1751 | symname[i++] = 0; | |
1752 | *vp = xmon_symbol_to_addr(symname); | |
1753 | if (!(*vp)) { | |
1754 | printf("unknown symbol\n"); | |
1755 | return 0; | |
1756 | } | |
1757 | return 1; | |
1758 | } | |
1759 | ||
1760 | d = hexdigit(c); | |
1761 | if( d == EOF ){ | |
1762 | termch = c; | |
1763 | return 0; | |
1764 | } | |
1765 | v = 0; | |
1766 | do { | |
1767 | v = (v << 4) + d; | |
1768 | c = inchar(); | |
1769 | d = hexdigit(c); | |
1770 | } while( d != EOF ); | |
1771 | termch = c; | |
1772 | *vp = v; | |
1773 | return 1; | |
1774 | } | |
1775 | ||
1776 | void | |
1777 | scannl(void) | |
1778 | { | |
1779 | int c; | |
1780 | ||
1781 | c = termch; | |
1782 | termch = 0; | |
1783 | while( c != '\n' ) | |
1784 | c = inchar(); | |
1785 | } | |
1786 | ||
1787 | int hexdigit(int c) | |
1788 | { | |
1789 | if( '0' <= c && c <= '9' ) | |
1790 | return c - '0'; | |
1791 | if( 'A' <= c && c <= 'F' ) | |
1792 | return c - ('A' - 10); | |
1793 | if( 'a' <= c && c <= 'f' ) | |
1794 | return c - ('a' - 10); | |
1795 | return EOF; | |
1796 | } | |
1797 | ||
1798 | void | |
1799 | getstring(char *s, int size) | |
1800 | { | |
1801 | int c; | |
1802 | ||
1803 | c = skipbl(); | |
1804 | do { | |
1805 | if( size > 1 ){ | |
1806 | *s++ = c; | |
1807 | --size; | |
1808 | } | |
1809 | c = inchar(); | |
1810 | } while( c != ' ' && c != '\t' && c != '\n' ); | |
1811 | termch = c; | |
1812 | *s = 0; | |
1813 | } | |
1814 | ||
1815 | static char line[256]; | |
1816 | static char *lineptr; | |
1817 | ||
1818 | void | |
1819 | flush_input(void) | |
1820 | { | |
1821 | lineptr = NULL; | |
1822 | } | |
1823 | ||
1824 | int | |
1825 | inchar(void) | |
1826 | { | |
1827 | if (lineptr == NULL || *lineptr == 0) { | |
1828 | if (fgets(line, sizeof(line), stdin) == NULL) { | |
1829 | lineptr = NULL; | |
1830 | return EOF; | |
1831 | } | |
1832 | lineptr = line; | |
1833 | } | |
1834 | return *lineptr++; | |
1835 | } | |
1836 | ||
1837 | void | |
1838 | take_input(char *str) | |
1839 | { | |
1840 | lineptr = str; | |
1841 | } | |
1842 | ||
1843 | void | |
1844 | sysmap_lookup(void) | |
1845 | { | |
1846 | int type = inchar(); | |
1847 | unsigned addr; | |
1848 | static char tmp[64]; | |
1849 | char* cur; | |
1850 | ||
1851 | extern char *sysmap; | |
1852 | extern unsigned long sysmap_size; | |
1853 | if ( !sysmap || !sysmap_size ) | |
1854 | return; | |
1855 | ||
1856 | switch(type) { | |
1857 | case 'a': | |
1858 | if (scanhex(&addr)) { | |
1859 | pretty_print_addr(addr); | |
1860 | printf("\n"); | |
1861 | } | |
1862 | termch = 0; | |
1863 | break; | |
1864 | case 's': | |
1865 | getstring(tmp, 64); | |
1866 | if( setjmp(bus_error_jmp) == 0 ) { | |
1867 | debugger_fault_handler = handle_fault; | |
1868 | sync(); | |
1869 | cur = sysmap; | |
1870 | do { | |
1871 | cur = strstr(cur, tmp); | |
1872 | if (cur) { | |
1873 | static char res[64]; | |
1874 | char *p, *d; | |
1875 | p = cur; | |
1876 | while(p > sysmap && *p != 10) | |
1877 | p--; | |
1878 | if (*p == 10) p++; | |
1879 | d = res; | |
1880 | while(*p && p < (sysmap + sysmap_size) && *p != 10) | |
1881 | *(d++) = *(p++); | |
1882 | *(d++) = 0; | |
1883 | printf("%s\n", res); | |
1884 | cur++; | |
1885 | } | |
1886 | } while (cur); | |
1887 | sync(); | |
1888 | } | |
1889 | debugger_fault_handler = NULL; | |
1890 | termch = 0; | |
1891 | break; | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | static int | |
1896 | pretty_print_addr(unsigned long addr) | |
1897 | { | |
1898 | char *sym; | |
1899 | unsigned long saddr; | |
1900 | ||
1901 | printf("%08x", addr); | |
1902 | sym = xmon_find_symbol(addr, &saddr); | |
1903 | if (sym) | |
1904 | printf(" (%s+0x%x)", sym, addr-saddr); | |
1905 | return (sym != 0); | |
1906 | } | |
1907 | ||
1908 | char* | |
1909 | xmon_find_symbol(unsigned long addr, unsigned long* saddr) | |
1910 | { | |
1911 | static char rbuffer[64]; | |
1912 | char *p, *ep, *limit; | |
1913 | unsigned long prev, next; | |
1914 | char* psym; | |
1915 | ||
1916 | extern char *sysmap; | |
1917 | extern unsigned long sysmap_size; | |
1918 | if ( !sysmap || !sysmap_size ) | |
1919 | return NULL; | |
1920 | ||
1921 | prev = 0; | |
1922 | psym = NULL; | |
1923 | p = sysmap; | |
1924 | limit = p + sysmap_size; | |
1925 | if( setjmp(bus_error_jmp) == 0 ) { | |
1926 | debugger_fault_handler = handle_fault; | |
1927 | sync(); | |
1928 | do { | |
1929 | next = simple_strtoul(p, &p, 16); | |
1930 | if (next > addr && prev <= addr) { | |
1931 | if (!psym) | |
1932 | goto bail; | |
1933 | ep = rbuffer; | |
1934 | p = psym; | |
1935 | while(*p && p < limit && *p == 32) | |
1936 | p++; | |
1937 | while(*p && p < limit && *p != 10 && (ep - rbuffer) < 63) | |
1938 | *(ep++) = *(p++); | |
1939 | *(ep++) = 0; | |
1940 | if (saddr) | |
1941 | *saddr = prev; | |
1942 | debugger_fault_handler = NULL; | |
1943 | return rbuffer; | |
1944 | } | |
1945 | prev = next; | |
1946 | psym = p; | |
1947 | while(*p && p < limit && *p != 10) | |
1948 | p++; | |
1949 | if (*p) p++; | |
1950 | } while(*p && p < limit && next); | |
1951 | bail: | |
1952 | sync(); | |
1953 | } | |
1954 | debugger_fault_handler = NULL; | |
1955 | return NULL; | |
1956 | } | |
1957 | ||
1958 | unsigned long | |
1959 | xmon_symbol_to_addr(char* symbol) | |
1960 | { | |
1961 | char *p, *cur; | |
1962 | char *match = NULL; | |
1963 | int goodness = 0; | |
1964 | int result = 0; | |
1965 | ||
1966 | extern char *sysmap; | |
1967 | extern unsigned long sysmap_size; | |
1968 | if ( !sysmap || !sysmap_size ) | |
1969 | return 0; | |
1970 | ||
1971 | if( setjmp(bus_error_jmp) == 0 ) { | |
1972 | debugger_fault_handler = handle_fault; | |
1973 | sync(); | |
1974 | cur = sysmap; | |
1975 | while(cur) { | |
1976 | cur = strstr(cur, symbol); | |
1977 | if (cur) { | |
1978 | int gd = 1; | |
1979 | ||
1980 | /* best match if equal, better match if | |
1981 | * begins with | |
1982 | */ | |
1983 | if (cur == sysmap || *(cur-1) == ' ') { | |
1984 | gd++; | |
1985 | if (cur[strlen(symbol)] == 10) | |
1986 | gd++; | |
1987 | } | |
1988 | if (gd > goodness) { | |
1989 | match = cur; | |
1990 | goodness = gd; | |
1991 | if (gd == 3) | |
1992 | break; | |
1993 | } | |
1994 | cur++; | |
1995 | } | |
1996 | } | |
1997 | if (goodness) { | |
1998 | p = match; | |
1999 | while(p > sysmap && *p != 10) | |
2000 | p--; | |
2001 | if (*p == 10) p++; | |
2002 | result = simple_strtoul(p, &p, 16); | |
2003 | } | |
2004 | sync(); | |
2005 | } | |
2006 | debugger_fault_handler = NULL; | |
2007 | return result; | |
2008 | } |