1 /* General "disassemble this chunk" code. Used for debugging. */
3 #include "qemu-common.h"
9 #include "disas/disas.h"
11 typedef struct CPUDebug
{
12 struct disassemble_info info
;
16 /* Filled in by elfload.c. Simplistic, but will do for now. */
17 struct syminfo
*syminfos
= NULL
;
19 /* Get LENGTH bytes from info's buffer, at target address memaddr.
20 Transfer them to myaddr. */
22 buffer_read_memory(bfd_vma memaddr
, bfd_byte
*myaddr
, int length
,
23 struct disassemble_info
*info
)
25 if (memaddr
< info
->buffer_vma
26 || memaddr
+ length
> info
->buffer_vma
+ info
->buffer_length
)
27 /* Out of bounds. Use EIO because GDB uses it. */
29 memcpy (myaddr
, info
->buffer
+ (memaddr
- info
->buffer_vma
), length
);
33 /* Get LENGTH bytes from info's buffer, at target address memaddr.
34 Transfer them to myaddr. */
36 target_read_memory (bfd_vma memaddr
,
39 struct disassemble_info
*info
)
41 CPUDebug
*s
= container_of(info
, CPUDebug
, info
);
43 cpu_memory_rw_debug(s
->cpu
, memaddr
, myaddr
, length
, 0);
47 /* Print an error message. We can assume that this is in response to
48 an error return from buffer_read_memory. */
50 perror_memory (int status
, bfd_vma memaddr
, struct disassemble_info
*info
)
54 (*info
->fprintf_func
) (info
->stream
, "Unknown error %d\n", status
);
56 /* Actually, address between memaddr and memaddr + len was
58 (*info
->fprintf_func
) (info
->stream
,
59 "Address 0x%" PRIx64
" is out of bounds.\n", memaddr
);
62 /* This could be in a separate file, to save minuscule amounts of space
63 in statically linked executables. */
65 /* Just print the address is hex. This is included for completeness even
66 though both GDB and objdump provide their own (to print symbolic
70 generic_print_address (bfd_vma addr
, struct disassemble_info
*info
)
72 (*info
->fprintf_func
) (info
->stream
, "0x%" PRIx64
, addr
);
75 /* Print address in hex, truncated to the width of a target virtual address. */
77 generic_print_target_address(bfd_vma addr
, struct disassemble_info
*info
)
79 uint64_t mask
= ~0ULL >> (64 - TARGET_VIRT_ADDR_SPACE_BITS
);
80 generic_print_address(addr
& mask
, info
);
83 /* Print address in hex, truncated to the width of a host virtual address. */
85 generic_print_host_address(bfd_vma addr
, struct disassemble_info
*info
)
87 uint64_t mask
= ~0ULL >> (64 - (sizeof(void *) * 8));
88 generic_print_address(addr
& mask
, info
);
91 /* Just return the given address. */
94 generic_symbol_at_address (bfd_vma addr
, struct disassemble_info
*info
)
99 bfd_vma
bfd_getl64 (const bfd_byte
*addr
)
101 unsigned long long v
;
103 v
= (unsigned long long) addr
[0];
104 v
|= (unsigned long long) addr
[1] << 8;
105 v
|= (unsigned long long) addr
[2] << 16;
106 v
|= (unsigned long long) addr
[3] << 24;
107 v
|= (unsigned long long) addr
[4] << 32;
108 v
|= (unsigned long long) addr
[5] << 40;
109 v
|= (unsigned long long) addr
[6] << 48;
110 v
|= (unsigned long long) addr
[7] << 56;
114 bfd_vma
bfd_getl32 (const bfd_byte
*addr
)
118 v
= (unsigned long) addr
[0];
119 v
|= (unsigned long) addr
[1] << 8;
120 v
|= (unsigned long) addr
[2] << 16;
121 v
|= (unsigned long) addr
[3] << 24;
125 bfd_vma
bfd_getb32 (const bfd_byte
*addr
)
129 v
= (unsigned long) addr
[0] << 24;
130 v
|= (unsigned long) addr
[1] << 16;
131 v
|= (unsigned long) addr
[2] << 8;
132 v
|= (unsigned long) addr
[3];
136 bfd_vma
bfd_getl16 (const bfd_byte
*addr
)
140 v
= (unsigned long) addr
[0];
141 v
|= (unsigned long) addr
[1] << 8;
145 bfd_vma
bfd_getb16 (const bfd_byte
*addr
)
149 v
= (unsigned long) addr
[0] << 24;
150 v
|= (unsigned long) addr
[1] << 16;
154 static int print_insn_objdump(bfd_vma pc
, disassemble_info
*info
,
157 int i
, n
= info
->buffer_length
;
158 uint8_t *buf
= g_malloc(n
);
160 info
->read_memory_func(pc
, buf
, n
, info
);
162 for (i
= 0; i
< n
; ++i
) {
164 info
->fprintf_func(info
->stream
, "\n%s: ", prefix
);
166 info
->fprintf_func(info
->stream
, "%02x", buf
[i
]);
173 static int print_insn_od_host(bfd_vma pc
, disassemble_info
*info
)
175 return print_insn_objdump(pc
, info
, "OBJD-H");
178 static int print_insn_od_target(bfd_vma pc
, disassemble_info
*info
)
180 return print_insn_objdump(pc
, info
, "OBJD-T");
183 /* Disassemble this for me please... (debugging). 'flags' has the following
185 i386 - 1 means 16 bit code, 2 means 64 bit code
186 ppc - bits 0:15 specify (optionally) the machine instruction set;
187 bit 16 indicates little endian.
188 other targets - unused
190 void target_disas(FILE *out
, CPUState
*cpu
, target_ulong code
,
191 target_ulong size
, int flags
)
193 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
198 INIT_DISASSEMBLE_INFO(s
.info
, out
, fprintf
);
201 s
.info
.read_memory_func
= target_read_memory
;
202 s
.info
.buffer_vma
= code
;
203 s
.info
.buffer_length
= size
;
204 s
.info
.print_address_func
= generic_print_target_address
;
206 #ifdef TARGET_WORDS_BIGENDIAN
207 s
.info
.endian
= BFD_ENDIAN_BIG
;
209 s
.info
.endian
= BFD_ENDIAN_LITTLE
;
212 if (cc
->disas_set_info
) {
213 cc
->disas_set_info(cpu
, &s
.info
);
216 #if defined(TARGET_I386)
218 s
.info
.mach
= bfd_mach_x86_64
;
219 } else if (flags
== 1) {
220 s
.info
.mach
= bfd_mach_i386_i8086
;
222 s
.info
.mach
= bfd_mach_i386_i386
;
224 s
.info
.print_insn
= print_insn_i386
;
225 #elif defined(TARGET_SPARC)
226 s
.info
.print_insn
= print_insn_sparc
;
227 #ifdef TARGET_SPARC64
228 s
.info
.mach
= bfd_mach_sparc_v9b
;
230 #elif defined(TARGET_PPC)
231 if ((flags
>> 16) & 1) {
232 s
.info
.endian
= BFD_ENDIAN_LITTLE
;
234 if (flags
& 0xFFFF) {
235 /* If we have a precise definition of the instruction set, use it. */
236 s
.info
.mach
= flags
& 0xFFFF;
239 s
.info
.mach
= bfd_mach_ppc64
;
241 s
.info
.mach
= bfd_mach_ppc
;
244 s
.info
.disassembler_options
= (char *)"any";
245 s
.info
.print_insn
= print_insn_ppc
;
246 #elif defined(TARGET_M68K)
247 s
.info
.print_insn
= print_insn_m68k
;
248 #elif defined(TARGET_MIPS)
249 #ifdef TARGET_WORDS_BIGENDIAN
250 s
.info
.print_insn
= print_insn_big_mips
;
252 s
.info
.print_insn
= print_insn_little_mips
;
254 #elif defined(TARGET_SH4)
255 s
.info
.mach
= bfd_mach_sh4
;
256 s
.info
.print_insn
= print_insn_sh
;
257 #elif defined(TARGET_ALPHA)
258 s
.info
.mach
= bfd_mach_alpha_ev6
;
259 s
.info
.print_insn
= print_insn_alpha
;
260 #elif defined(TARGET_CRIS)
262 s
.info
.mach
= bfd_mach_cris_v0_v10
;
263 s
.info
.print_insn
= print_insn_crisv10
;
265 s
.info
.mach
= bfd_mach_cris_v32
;
266 s
.info
.print_insn
= print_insn_crisv32
;
268 #elif defined(TARGET_S390X)
269 s
.info
.mach
= bfd_mach_s390_64
;
270 s
.info
.print_insn
= print_insn_s390
;
271 #elif defined(TARGET_MOXIE)
272 s
.info
.mach
= bfd_arch_moxie
;
273 s
.info
.print_insn
= print_insn_moxie
;
274 #elif defined(TARGET_LM32)
275 s
.info
.mach
= bfd_mach_lm32
;
276 s
.info
.print_insn
= print_insn_lm32
;
278 if (s
.info
.print_insn
== NULL
) {
279 s
.info
.print_insn
= print_insn_od_target
;
282 for (pc
= code
; size
> 0; pc
+= count
, size
-= count
) {
283 fprintf(out
, "0x" TARGET_FMT_lx
": ", pc
);
284 count
= s
.info
.print_insn(pc
, &s
.info
);
290 for(i
= 0; i
< count
; i
++) {
291 target_read_memory(pc
+ i
, &b
, 1, &s
.info
);
292 fprintf(out
, " %02x", b
);
302 "Disassembler disagrees with translator over instruction "
304 "Please report this to qemu-devel@nongnu.org\n");
310 /* Disassemble this for me please... (debugging). */
311 void disas(FILE *out
, void *code
, unsigned long size
)
316 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
) = NULL
;
318 INIT_DISASSEMBLE_INFO(s
.info
, out
, fprintf
);
319 s
.info
.print_address_func
= generic_print_host_address
;
321 s
.info
.buffer
= code
;
322 s
.info
.buffer_vma
= (uintptr_t)code
;
323 s
.info
.buffer_length
= size
;
325 #ifdef HOST_WORDS_BIGENDIAN
326 s
.info
.endian
= BFD_ENDIAN_BIG
;
328 s
.info
.endian
= BFD_ENDIAN_LITTLE
;
330 #if defined(CONFIG_TCG_INTERPRETER)
331 print_insn
= print_insn_tci
;
332 #elif defined(__i386__)
333 s
.info
.mach
= bfd_mach_i386_i386
;
334 print_insn
= print_insn_i386
;
335 #elif defined(__x86_64__)
336 s
.info
.mach
= bfd_mach_x86_64
;
337 print_insn
= print_insn_i386
;
338 #elif defined(_ARCH_PPC)
339 s
.info
.disassembler_options
= (char *)"any";
340 print_insn
= print_insn_ppc
;
341 #elif defined(__aarch64__) && defined(CONFIG_ARM_A64_DIS)
342 print_insn
= print_insn_arm_a64
;
343 #elif defined(__alpha__)
344 print_insn
= print_insn_alpha
;
345 #elif defined(__sparc__)
346 print_insn
= print_insn_sparc
;
347 s
.info
.mach
= bfd_mach_sparc_v9b
;
348 #elif defined(__arm__)
349 print_insn
= print_insn_arm
;
350 #elif defined(__MIPSEB__)
351 print_insn
= print_insn_big_mips
;
352 #elif defined(__MIPSEL__)
353 print_insn
= print_insn_little_mips
;
354 #elif defined(__m68k__)
355 print_insn
= print_insn_m68k
;
356 #elif defined(__s390__)
357 print_insn
= print_insn_s390
;
358 #elif defined(__hppa__)
359 print_insn
= print_insn_hppa
;
360 #elif defined(__ia64__)
361 print_insn
= print_insn_ia64
;
363 if (print_insn
== NULL
) {
364 print_insn
= print_insn_od_host
;
366 for (pc
= (uintptr_t)code
; size
> 0; pc
+= count
, size
-= count
) {
367 fprintf(out
, "0x%08" PRIxPTR
": ", pc
);
368 count
= print_insn(pc
, &s
.info
);
375 /* Look up symbol for debugging purpose. Returns "" if unknown. */
376 const char *lookup_symbol(target_ulong orig_addr
)
378 const char *symbol
= "";
381 for (s
= syminfos
; s
; s
= s
->next
) {
382 symbol
= s
->lookup_symbol(s
, orig_addr
);
383 if (symbol
[0] != '\0') {
391 #if !defined(CONFIG_USER_ONLY)
393 #include "monitor/monitor.h"
395 static int monitor_disas_is_physical
;
398 monitor_read_memory (bfd_vma memaddr
, bfd_byte
*myaddr
, int length
,
399 struct disassemble_info
*info
)
401 CPUDebug
*s
= container_of(info
, CPUDebug
, info
);
403 if (monitor_disas_is_physical
) {
404 cpu_physical_memory_read(memaddr
, myaddr
, length
);
406 cpu_memory_rw_debug(s
->cpu
, memaddr
, myaddr
, length
, 0);
411 static int GCC_FMT_ATTR(2, 3)
412 monitor_fprintf(FILE *stream
, const char *fmt
, ...)
416 monitor_vprintf((Monitor
*)stream
, fmt
, ap
);
421 /* Disassembler for the monitor.
422 See target_disas for a description of flags. */
423 void monitor_disas(Monitor
*mon
, CPUState
*cpu
,
424 target_ulong pc
, int nb_insn
, int is_physical
, int flags
)
426 CPUClass
*cc
= CPU_GET_CLASS(cpu
);
430 INIT_DISASSEMBLE_INFO(s
.info
, (FILE *)mon
, monitor_fprintf
);
433 monitor_disas_is_physical
= is_physical
;
434 s
.info
.read_memory_func
= monitor_read_memory
;
435 s
.info
.print_address_func
= generic_print_target_address
;
437 s
.info
.buffer_vma
= pc
;
439 #ifdef TARGET_WORDS_BIGENDIAN
440 s
.info
.endian
= BFD_ENDIAN_BIG
;
442 s
.info
.endian
= BFD_ENDIAN_LITTLE
;
445 if (cc
->disas_set_info
) {
446 cc
->disas_set_info(cpu
, &s
.info
);
449 #if defined(TARGET_I386)
451 s
.info
.mach
= bfd_mach_x86_64
;
452 } else if (flags
== 1) {
453 s
.info
.mach
= bfd_mach_i386_i8086
;
455 s
.info
.mach
= bfd_mach_i386_i386
;
457 s
.info
.print_insn
= print_insn_i386
;
458 #elif defined(TARGET_ALPHA)
459 s
.info
.print_insn
= print_insn_alpha
;
460 #elif defined(TARGET_SPARC)
461 s
.info
.print_insn
= print_insn_sparc
;
462 #ifdef TARGET_SPARC64
463 s
.info
.mach
= bfd_mach_sparc_v9b
;
465 #elif defined(TARGET_PPC)
466 if (flags
& 0xFFFF) {
467 /* If we have a precise definition of the instruction set, use it. */
468 s
.info
.mach
= flags
& 0xFFFF;
471 s
.info
.mach
= bfd_mach_ppc64
;
473 s
.info
.mach
= bfd_mach_ppc
;
476 if ((flags
>> 16) & 1) {
477 s
.info
.endian
= BFD_ENDIAN_LITTLE
;
479 s
.info
.print_insn
= print_insn_ppc
;
480 #elif defined(TARGET_M68K)
481 s
.info
.print_insn
= print_insn_m68k
;
482 #elif defined(TARGET_MIPS)
483 #ifdef TARGET_WORDS_BIGENDIAN
484 s
.info
.print_insn
= print_insn_big_mips
;
486 s
.info
.print_insn
= print_insn_little_mips
;
488 #elif defined(TARGET_SH4)
489 s
.info
.mach
= bfd_mach_sh4
;
490 s
.info
.print_insn
= print_insn_sh
;
491 #elif defined(TARGET_S390X)
492 s
.info
.mach
= bfd_mach_s390_64
;
493 s
.info
.print_insn
= print_insn_s390
;
494 #elif defined(TARGET_MOXIE)
495 s
.info
.mach
= bfd_arch_moxie
;
496 s
.info
.print_insn
= print_insn_moxie
;
497 #elif defined(TARGET_LM32)
498 s
.info
.mach
= bfd_mach_lm32
;
499 s
.info
.print_insn
= print_insn_lm32
;
501 if (!s
.info
.print_insn
) {
502 monitor_printf(mon
, "0x" TARGET_FMT_lx
503 ": Asm output not supported on this arch\n", pc
);
507 for(i
= 0; i
< nb_insn
; i
++) {
508 monitor_printf(mon
, "0x" TARGET_FMT_lx
": ", pc
);
509 count
= s
.info
.print_insn(pc
, &s
.info
);
510 monitor_printf(mon
, "\n");