1 /* General "disassemble this chunk" code. Used for debugging. */
8 #include "disas/disas.h"
10 typedef struct CPUDebug {
11 struct disassemble_info info;
15 /* Filled in by elfload.c. Simplistic, but will do for now. */
16 struct syminfo *syminfos = NULL;
18 /* Get LENGTH bytes from info's buffer, at target address memaddr.
19 Transfer them to myaddr. */
21 buffer_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
22 struct disassemble_info *info)
24 if (memaddr < info->buffer_vma
25 || memaddr + length > info->buffer_vma + info->buffer_length)
26 /* Out of bounds. Use EIO because GDB uses it. */
28 memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
32 /* Get LENGTH bytes from info's buffer, at target address memaddr.
33 Transfer them to myaddr. */
35 target_read_memory (bfd_vma memaddr,
38 struct disassemble_info *info)
40 CPUDebug *s = container_of(info, CPUDebug, info);
42 cpu_memory_rw_debug(ENV_GET_CPU(s->env), memaddr, myaddr, length, 0);
46 /* Print an error message. We can assume that this is in response to
47 an error return from buffer_read_memory. */
49 perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info)
53 (*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
55 /* Actually, address between memaddr and memaddr + len was
57 (*info->fprintf_func) (info->stream,
58 "Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
61 /* This could be in a separate file, to save minuscule amounts of space
62 in statically linked executables. */
64 /* Just print the address is hex. This is included for completeness even
65 though both GDB and objdump provide their own (to print symbolic
69 generic_print_address (bfd_vma addr, struct disassemble_info *info)
71 (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
74 /* Print address in hex, truncated to the width of a target virtual address. */
76 generic_print_target_address(bfd_vma addr, struct disassemble_info *info)
78 uint64_t mask = ~0ULL >> (64 - TARGET_VIRT_ADDR_SPACE_BITS);
79 generic_print_address(addr & mask, info);
82 /* Print address in hex, truncated to the width of a host virtual address. */
84 generic_print_host_address(bfd_vma addr, struct disassemble_info *info)
86 uint64_t mask = ~0ULL >> (64 - (sizeof(void *) * 8));
87 generic_print_address(addr & mask, info);
90 /* Just return the given address. */
93 generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info)
98 bfd_vma bfd_getl64 (const bfd_byte *addr)
100 unsigned long long v;
102 v = (unsigned long long) addr[0];
103 v |= (unsigned long long) addr[1] << 8;
104 v |= (unsigned long long) addr[2] << 16;
105 v |= (unsigned long long) addr[3] << 24;
106 v |= (unsigned long long) addr[4] << 32;
107 v |= (unsigned long long) addr[5] << 40;
108 v |= (unsigned long long) addr[6] << 48;
109 v |= (unsigned long long) addr[7] << 56;
113 bfd_vma bfd_getl32 (const bfd_byte *addr)
117 v = (unsigned long) addr[0];
118 v |= (unsigned long) addr[1] << 8;
119 v |= (unsigned long) addr[2] << 16;
120 v |= (unsigned long) addr[3] << 24;
124 bfd_vma bfd_getb32 (const bfd_byte *addr)
128 v = (unsigned long) addr[0] << 24;
129 v |= (unsigned long) addr[1] << 16;
130 v |= (unsigned long) addr[2] << 8;
131 v |= (unsigned long) addr[3];
135 bfd_vma bfd_getl16 (const bfd_byte *addr)
139 v = (unsigned long) addr[0];
140 v |= (unsigned long) addr[1] << 8;
144 bfd_vma bfd_getb16 (const bfd_byte *addr)
148 v = (unsigned long) addr[0] << 24;
149 v |= (unsigned long) addr[1] << 16;
155 print_insn_thumb1(bfd_vma pc, disassemble_info *info)
157 return print_insn_arm(pc | 1, info);
161 static int print_insn_objdump(bfd_vma pc, disassemble_info *info,
164 int i, n = info->buffer_length;
165 uint8_t *buf = g_malloc(n);
167 info->read_memory_func(pc, buf, n, info);
169 for (i = 0; i < n; ++i) {
171 info->fprintf_func(info->stream, "\n%s: ", prefix);
173 info->fprintf_func(info->stream, "%02x", buf[i]);
180 static int print_insn_od_host(bfd_vma pc, disassemble_info *info)
182 return print_insn_objdump(pc, info, "OBJD-H");
185 static int print_insn_od_target(bfd_vma pc, disassemble_info *info)
187 return print_insn_objdump(pc, info, "OBJD-T");
190 /* Disassemble this for me please... (debugging). 'flags' has the following
192 i386 - 1 means 16 bit code, 2 means 64 bit code
193 arm - bit 0 = thumb, bit 1 = reverse endian
194 ppc - nonzero means little endian
195 other targets - unused
197 void target_disas(FILE *out, CPUArchState *env, target_ulong code,
198 target_ulong size, int flags)
203 int (*print_insn)(bfd_vma pc, disassemble_info *info) = NULL;
205 INIT_DISASSEMBLE_INFO(s.info, out, fprintf);
208 s.info.read_memory_func = target_read_memory;
209 s.info.buffer_vma = code;
210 s.info.buffer_length = size;
211 s.info.print_address_func = generic_print_target_address;
213 #ifdef TARGET_WORDS_BIGENDIAN
214 s.info.endian = BFD_ENDIAN_BIG;
216 s.info.endian = BFD_ENDIAN_LITTLE;
218 #if defined(TARGET_I386)
220 s.info.mach = bfd_mach_x86_64;
221 } else if (flags == 1) {
222 s.info.mach = bfd_mach_i386_i8086;
224 s.info.mach = bfd_mach_i386_i386;
226 print_insn = print_insn_i386;
227 #elif defined(TARGET_ARM)
229 print_insn = print_insn_thumb1;
231 print_insn = print_insn_arm;
234 #ifdef TARGET_WORDS_BIGENDIAN
235 s.info.endian = BFD_ENDIAN_LITTLE;
237 s.info.endian = BFD_ENDIAN_BIG;
240 #elif defined(TARGET_SPARC)
241 print_insn = print_insn_sparc;
242 #ifdef TARGET_SPARC64
243 s.info.mach = bfd_mach_sparc_v9b;
245 #elif defined(TARGET_PPC)
247 s.info.endian = BFD_ENDIAN_LITTLE;
249 if (flags & 0xFFFF) {
250 /* If we have a precise definitions of the instructions set, use it */
251 s.info.mach = flags & 0xFFFF;
254 s.info.mach = bfd_mach_ppc64;
256 s.info.mach = bfd_mach_ppc;
259 s.info.disassembler_options = (char *)"any";
260 print_insn = print_insn_ppc;
261 #elif defined(TARGET_M68K)
262 print_insn = print_insn_m68k;
263 #elif defined(TARGET_MIPS)
264 #ifdef TARGET_WORDS_BIGENDIAN
265 print_insn = print_insn_big_mips;
267 print_insn = print_insn_little_mips;
269 #elif defined(TARGET_SH4)
270 s.info.mach = bfd_mach_sh4;
271 print_insn = print_insn_sh;
272 #elif defined(TARGET_ALPHA)
273 s.info.mach = bfd_mach_alpha_ev6;
274 print_insn = print_insn_alpha;
275 #elif defined(TARGET_CRIS)
277 s.info.mach = bfd_mach_cris_v0_v10;
278 print_insn = print_insn_crisv10;
280 s.info.mach = bfd_mach_cris_v32;
281 print_insn = print_insn_crisv32;
283 #elif defined(TARGET_S390X)
284 s.info.mach = bfd_mach_s390_64;
285 print_insn = print_insn_s390;
286 #elif defined(TARGET_MICROBLAZE)
287 s.info.mach = bfd_arch_microblaze;
288 print_insn = print_insn_microblaze;
289 #elif defined(TARGET_MOXIE)
290 s.info.mach = bfd_arch_moxie;
291 print_insn = print_insn_moxie;
292 #elif defined(TARGET_LM32)
293 s.info.mach = bfd_mach_lm32;
294 print_insn = print_insn_lm32;
296 if (print_insn == NULL) {
297 print_insn = print_insn_od_target;
300 for (pc = code; size > 0; pc += count, size -= count) {
301 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
302 count = print_insn(pc, &s.info);
308 for(i = 0; i < count; i++) {
309 target_read_memory(pc + i, &b, 1, &s.info);
310 fprintf(out, " %02x", b);
320 "Disassembler disagrees with translator over instruction "
322 "Please report this to qemu-devel@nongnu.org\n");
328 /* Disassemble this for me please... (debugging). */
329 void disas(FILE *out, void *code, unsigned long size)
334 int (*print_insn)(bfd_vma pc, disassemble_info *info) = NULL;
336 INIT_DISASSEMBLE_INFO(s.info, out, fprintf);
337 s.info.print_address_func = generic_print_host_address;
339 s.info.buffer = code;
340 s.info.buffer_vma = (uintptr_t)code;
341 s.info.buffer_length = size;
343 #ifdef HOST_WORDS_BIGENDIAN
344 s.info.endian = BFD_ENDIAN_BIG;
346 s.info.endian = BFD_ENDIAN_LITTLE;
348 #if defined(CONFIG_TCG_INTERPRETER)
349 print_insn = print_insn_tci;
350 #elif defined(__i386__)
351 s.info.mach = bfd_mach_i386_i386;
352 print_insn = print_insn_i386;
353 #elif defined(__x86_64__)
354 s.info.mach = bfd_mach_x86_64;
355 print_insn = print_insn_i386;
356 #elif defined(_ARCH_PPC)
357 s.info.disassembler_options = (char *)"any";
358 print_insn = print_insn_ppc;
359 #elif defined(__alpha__)
360 print_insn = print_insn_alpha;
361 #elif defined(__sparc__)
362 print_insn = print_insn_sparc;
363 s.info.mach = bfd_mach_sparc_v9b;
364 #elif defined(__arm__)
365 print_insn = print_insn_arm;
366 #elif defined(__MIPSEB__)
367 print_insn = print_insn_big_mips;
368 #elif defined(__MIPSEL__)
369 print_insn = print_insn_little_mips;
370 #elif defined(__m68k__)
371 print_insn = print_insn_m68k;
372 #elif defined(__s390__)
373 print_insn = print_insn_s390;
374 #elif defined(__hppa__)
375 print_insn = print_insn_hppa;
376 #elif defined(__ia64__)
377 print_insn = print_insn_ia64;
379 if (print_insn == NULL) {
380 print_insn = print_insn_od_host;
382 for (pc = (uintptr_t)code; size > 0; pc += count, size -= count) {
383 fprintf(out, "0x%08" PRIxPTR ": ", pc);
384 count = print_insn(pc, &s.info);
391 /* Look up symbol for debugging purpose. Returns "" if unknown. */
392 const char *lookup_symbol(target_ulong orig_addr)
394 const char *symbol = "";
397 for (s = syminfos; s; s = s->next) {
398 symbol = s->lookup_symbol(s, orig_addr);
399 if (symbol[0] != '\0') {
407 #if !defined(CONFIG_USER_ONLY)
409 #include "monitor/monitor.h"
411 static int monitor_disas_is_physical;
414 monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
415 struct disassemble_info *info)
417 CPUDebug *s = container_of(info, CPUDebug, info);
419 if (monitor_disas_is_physical) {
420 cpu_physical_memory_read(memaddr, myaddr, length);
422 cpu_memory_rw_debug(ENV_GET_CPU(s->env), memaddr, myaddr, length, 0);
427 static int GCC_FMT_ATTR(2, 3)
428 monitor_fprintf(FILE *stream, const char *fmt, ...)
432 monitor_vprintf((Monitor *)stream, fmt, ap);
437 void monitor_disas(Monitor *mon, CPUArchState *env,
438 target_ulong pc, int nb_insn, int is_physical, int flags)
442 int (*print_insn)(bfd_vma pc, disassemble_info *info);
444 INIT_DISASSEMBLE_INFO(s.info, (FILE *)mon, monitor_fprintf);
447 monitor_disas_is_physical = is_physical;
448 s.info.read_memory_func = monitor_read_memory;
449 s.info.print_address_func = generic_print_target_address;
451 s.info.buffer_vma = pc;
453 #ifdef TARGET_WORDS_BIGENDIAN
454 s.info.endian = BFD_ENDIAN_BIG;
456 s.info.endian = BFD_ENDIAN_LITTLE;
458 #if defined(TARGET_I386)
460 s.info.mach = bfd_mach_x86_64;
461 } else if (flags == 1) {
462 s.info.mach = bfd_mach_i386_i8086;
464 s.info.mach = bfd_mach_i386_i386;
466 print_insn = print_insn_i386;
467 #elif defined(TARGET_ARM)
468 print_insn = print_insn_arm;
469 #elif defined(TARGET_ALPHA)
470 print_insn = print_insn_alpha;
471 #elif defined(TARGET_SPARC)
472 print_insn = print_insn_sparc;
473 #ifdef TARGET_SPARC64
474 s.info.mach = bfd_mach_sparc_v9b;
476 #elif defined(TARGET_PPC)
478 s.info.mach = bfd_mach_ppc64;
480 s.info.mach = bfd_mach_ppc;
482 print_insn = print_insn_ppc;
483 #elif defined(TARGET_M68K)
484 print_insn = print_insn_m68k;
485 #elif defined(TARGET_MIPS)
486 #ifdef TARGET_WORDS_BIGENDIAN
487 print_insn = print_insn_big_mips;
489 print_insn = print_insn_little_mips;
491 #elif defined(TARGET_SH4)
492 s.info.mach = bfd_mach_sh4;
493 print_insn = print_insn_sh;
494 #elif defined(TARGET_S390X)
495 s.info.mach = bfd_mach_s390_64;
496 print_insn = print_insn_s390;
497 #elif defined(TARGET_MOXIE)
498 s.info.mach = bfd_arch_moxie;
499 print_insn = print_insn_moxie;
500 #elif defined(TARGET_LM32)
501 s.info.mach = bfd_mach_lm32;
502 print_insn = print_insn_lm32;
504 monitor_printf(mon, "0x" TARGET_FMT_lx
505 ": Asm output not supported on this arch\n", pc);
509 for(i = 0; i < nb_insn; i++) {
510 monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc);
511 count = print_insn(pc, &s.info);
512 monitor_printf(mon, "\n");