1 /* General "disassemble this chunk" code. Used for debugging. */
11 /* Filled in by elfload.c. Simplistic, but will do for now. */
12 struct syminfo
*syminfos
= NULL
;
14 /* Get LENGTH bytes from info's buffer, at target address memaddr.
15 Transfer them to myaddr. */
17 buffer_read_memory (memaddr
, myaddr
, length
, info
)
21 struct disassemble_info
*info
;
23 if (memaddr
< info
->buffer_vma
24 || memaddr
+ length
> info
->buffer_vma
+ info
->buffer_length
)
25 /* Out of bounds. Use EIO because GDB uses it. */
27 memcpy (myaddr
, info
->buffer
+ (memaddr
- info
->buffer_vma
), length
);
31 /* Get LENGTH bytes from info's buffer, at target address memaddr.
32 Transfer them to myaddr. */
34 target_read_memory (bfd_vma memaddr
,
37 struct disassemble_info
*info
)
40 for(i
= 0; i
< length
; i
++) {
41 myaddr
[i
] = ldub_code(memaddr
+ i
);
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 (status
, memaddr
, info
)
52 struct disassemble_info
*info
;
56 (*info
->fprintf_func
) (info
->stream
, "Unknown error %d\n", status
);
58 /* Actually, address between memaddr and memaddr + len was
60 (*info
->fprintf_func
) (info
->stream
,
61 "Address 0x%llx is out of bounds.\n", memaddr
);
64 /* This could be in a separate file, to save miniscule amounts of space
65 in statically linked executables. */
67 /* Just print the address is hex. This is included for completeness even
68 though both GDB and objdump provide their own (to print symbolic
72 generic_print_address (addr
, info
)
74 struct disassemble_info
*info
;
76 (*info
->fprintf_func
) (info
->stream
, "0x%llx", addr
);
79 /* Just return the given address. */
82 generic_symbol_at_address (addr
, info
)
84 struct disassemble_info
* info
;
89 bfd_vma
bfd_getl32 (const bfd_byte
*addr
)
93 v
= (unsigned long) addr
[0];
94 v
|= (unsigned long) addr
[1] << 8;
95 v
|= (unsigned long) addr
[2] << 16;
96 v
|= (unsigned long) addr
[3] << 24;
100 bfd_vma
bfd_getb32 (const bfd_byte
*addr
)
104 v
= (unsigned long) addr
[0] << 24;
105 v
|= (unsigned long) addr
[1] << 16;
106 v
|= (unsigned long) addr
[2] << 8;
107 v
|= (unsigned long) addr
[3];
111 bfd_vma
bfd_getl16 (const bfd_byte
*addr
)
115 v
= (unsigned long) addr
[0];
116 v
|= (unsigned long) addr
[1] << 8;
120 bfd_vma
bfd_getb16 (const bfd_byte
*addr
)
124 v
= (unsigned long) addr
[0] << 24;
125 v
|= (unsigned long) addr
[1] << 16;
131 print_insn_thumb1(bfd_vma pc
, disassemble_info
*info
)
133 return print_insn_arm(pc
| 1, info
);
137 /* Disassemble this for me please... (debugging). 'flags' has teh following
139 i386 - nonzero means 16 bit code
140 arm - nonzero means thumb code
141 other targets - unused
143 void target_disas(FILE *out
, target_ulong code
, target_ulong size
, int flags
)
147 struct disassemble_info disasm_info
;
148 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
);
150 INIT_DISASSEMBLE_INFO(disasm_info
, out
, fprintf
);
152 disasm_info
.read_memory_func
= target_read_memory
;
153 disasm_info
.buffer_vma
= code
;
154 disasm_info
.buffer_length
= size
;
156 #ifdef TARGET_WORDS_BIGENDIAN
157 disasm_info
.endian
= BFD_ENDIAN_BIG
;
159 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
161 #if defined(TARGET_I386)
163 disasm_info
.mach
= bfd_mach_x86_64
;
165 disasm_info
.mach
= bfd_mach_i386_i8086
;
167 disasm_info
.mach
= bfd_mach_i386_i386
;
168 print_insn
= print_insn_i386
;
169 #elif defined(TARGET_ARM)
171 print_insn
= print_insn_thumb1
;
173 print_insn
= print_insn_arm
;
174 #elif defined(TARGET_SPARC)
175 print_insn
= print_insn_sparc
;
176 #ifdef TARGET_SPARC64
177 disasm_info
.mach
= bfd_mach_sparc_v9b
;
179 #elif defined(TARGET_PPC)
180 if (cpu_single_env
->msr
[MSR_LE
])
181 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
183 disasm_info
.mach
= bfd_mach_ppc64
;
185 disasm_info
.mach
= bfd_mach_ppc
;
187 print_insn
= print_insn_ppc
;
188 #elif defined(TARGET_MIPS)
189 print_insn
= print_insn_big_mips
;
190 #elif defined(TARGET_M68K)
191 print_insn
= print_insn_m68k
;
193 fprintf(out
, "0x" TARGET_FMT_lx
194 ": Asm output not supported on this arch\n", code
);
198 for (pc
= code
; pc
< code
+ size
; pc
+= count
) {
199 fprintf(out
, "0x" TARGET_FMT_lx
": ", pc
);
200 count
= print_insn(pc
, &disasm_info
);
206 for(i
= 0; i
< count
; i
++) {
207 target_read_memory(pc
+ i
, &b
, 1, &disasm_info
);
208 fprintf(out
, " %02x", b
);
219 /* Disassemble this for me please... (debugging). */
220 void disas(FILE *out
, void *code
, unsigned long size
)
224 struct disassemble_info disasm_info
;
225 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
);
227 INIT_DISASSEMBLE_INFO(disasm_info
, out
, fprintf
);
229 disasm_info
.buffer
= code
;
230 disasm_info
.buffer_vma
= (unsigned long)code
;
231 disasm_info
.buffer_length
= size
;
233 #ifdef WORDS_BIGENDIAN
234 disasm_info
.endian
= BFD_ENDIAN_BIG
;
236 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
238 #if defined(__i386__)
239 disasm_info
.mach
= bfd_mach_i386_i386
;
240 print_insn
= print_insn_i386
;
241 #elif defined(__x86_64__)
242 disasm_info
.mach
= bfd_mach_x86_64
;
243 print_insn
= print_insn_i386
;
244 #elif defined(__powerpc__)
245 print_insn
= print_insn_ppc
;
246 #elif defined(__alpha__)
247 print_insn
= print_insn_alpha
;
248 #elif defined(__sparc__)
249 print_insn
= print_insn_sparc
;
250 #elif defined(__arm__)
251 print_insn
= print_insn_arm
;
252 #elif defined(__MIPSEB__)
253 print_insn
= print_insn_big_mips
;
254 #elif defined(__MIPSEL__)
255 print_insn
= print_insn_little_mips
;
256 #elif defined(__m68k__)
257 print_insn
= print_insn_m68k
;
259 fprintf(out
, "0x%lx: Asm output not supported on this arch\n",
263 for (pc
= (unsigned long)code
; pc
< (unsigned long)code
+ size
; pc
+= count
) {
264 fprintf(out
, "0x%08lx: ", pc
);
266 /* since data are included in the code, it is better to
267 display code data too */
269 fprintf(out
, "%08x ", (int)bfd_getl32((const bfd_byte
*)pc
));
272 count
= print_insn(pc
, &disasm_info
);
279 /* Look up symbol for debugging purpose. Returns "" if unknown. */
280 const char *lookup_symbol(target_ulong orig_addr
)
283 /* Hack, because we know this is x86. */
288 for (s
= syminfos
; s
; s
= s
->next
) {
289 sym
= s
->disas_symtab
;
290 for (i
= 0; i
< s
->disas_num_syms
; i
++) {
291 if (sym
[i
].st_shndx
== SHN_UNDEF
292 || sym
[i
].st_shndx
>= SHN_LORESERVE
)
295 if (ELF_ST_TYPE(sym
[i
].st_info
) != STT_FUNC
)
298 addr
= sym
[i
].st_value
;
300 /* The bottom address bit marks a Thumb symbol. */
301 addr
&= ~(target_ulong
)1;
303 if (orig_addr
>= addr
304 && orig_addr
< addr
+ sym
[i
].st_size
)
305 return s
->disas_strtab
+ sym
[i
].st_name
;
311 #if !defined(CONFIG_USER_ONLY)
313 void term_vprintf(const char *fmt
, va_list ap
);
314 void term_printf(const char *fmt
, ...);
316 static int monitor_disas_is_physical
;
319 monitor_read_memory (memaddr
, myaddr
, length
, info
)
323 struct disassemble_info
*info
;
325 if (monitor_disas_is_physical
) {
326 cpu_physical_memory_rw(memaddr
, myaddr
, length
, 0);
328 cpu_memory_rw_debug(cpu_single_env
, memaddr
,myaddr
, length
, 0);
333 static int monitor_fprintf(FILE *stream
, const char *fmt
, ...)
337 term_vprintf(fmt
, ap
);
342 void monitor_disas(target_ulong pc
, int nb_insn
, int is_physical
, int flags
)
345 struct disassemble_info disasm_info
;
346 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
);
348 INIT_DISASSEMBLE_INFO(disasm_info
, NULL
, monitor_fprintf
);
350 monitor_disas_is_physical
= is_physical
;
351 disasm_info
.read_memory_func
= monitor_read_memory
;
353 disasm_info
.buffer_vma
= pc
;
355 #ifdef TARGET_WORDS_BIGENDIAN
356 disasm_info
.endian
= BFD_ENDIAN_BIG
;
358 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
360 #if defined(TARGET_I386)
362 disasm_info
.mach
= bfd_mach_x86_64
;
364 disasm_info
.mach
= bfd_mach_i386_i8086
;
366 disasm_info
.mach
= bfd_mach_i386_i386
;
367 print_insn
= print_insn_i386
;
368 #elif defined(TARGET_ARM)
369 print_insn
= print_insn_arm
;
370 #elif defined(TARGET_SPARC)
371 print_insn
= print_insn_sparc
;
372 #elif defined(TARGET_PPC)
374 disasm_info
.mach
= bfd_mach_ppc64
;
376 disasm_info
.mach
= bfd_mach_ppc
;
378 print_insn
= print_insn_ppc
;
379 #elif defined(TARGET_MIPS)
380 print_insn
= print_insn_big_mips
;
381 #elif defined(TARGET_M68K)
382 print_insn
= print_insn_m68k
;
384 term_printf("0x" TARGET_FMT_lx
385 ": Asm output not supported on this arch\n", pc
);
389 for(i
= 0; i
< nb_insn
; i
++) {
390 term_printf("0x" TARGET_FMT_lx
": ", pc
);
391 count
= print_insn(pc
, &disasm_info
);