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];
113 print_insn_thumb1(bfd_vma pc
, disassemble_info
*info
)
115 return print_insn_arm(pc
| 1, info
);
119 /* Disassemble this for me please... (debugging). 'flags' has teh following
121 i386 - nonzero means 16 bit code
122 arm - nonzero means thumb code
123 other targets - unused
125 void target_disas(FILE *out
, target_ulong code
, target_ulong size
, int flags
)
129 struct disassemble_info disasm_info
;
130 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
);
132 INIT_DISASSEMBLE_INFO(disasm_info
, out
, fprintf
);
134 disasm_info
.read_memory_func
= target_read_memory
;
135 disasm_info
.buffer_vma
= code
;
136 disasm_info
.buffer_length
= size
;
138 #ifdef TARGET_WORDS_BIGENDIAN
139 disasm_info
.endian
= BFD_ENDIAN_BIG
;
141 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
143 #if defined(TARGET_I386)
145 disasm_info
.mach
= bfd_mach_x86_64
;
147 disasm_info
.mach
= bfd_mach_i386_i8086
;
149 disasm_info
.mach
= bfd_mach_i386_i386
;
150 print_insn
= print_insn_i386
;
151 #elif defined(TARGET_ARM)
153 print_insn
= print_insn_thumb1
;
155 print_insn
= print_insn_arm
;
156 #elif defined(TARGET_SPARC)
157 print_insn
= print_insn_sparc
;
158 #elif defined(TARGET_PPC)
159 if (cpu_single_env
->msr
[MSR_LE
])
160 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
161 print_insn
= print_insn_ppc
;
163 fprintf(out
, "0x" TARGET_FMT_lx
164 ": Asm output not supported on this arch\n", code
);
168 for (pc
= code
; pc
< code
+ size
; pc
+= count
) {
169 fprintf(out
, "0x" TARGET_FMT_lx
": ", pc
);
170 count
= print_insn(pc
, &disasm_info
);
176 for(i
= 0; i
< count
; i
++) {
177 target_read_memory(pc
+ i
, &b
, 1, &disasm_info
);
178 fprintf(out
, " %02x", b
);
189 /* Disassemble this for me please... (debugging). */
190 void disas(FILE *out
, void *code
, unsigned long size
)
194 struct disassemble_info disasm_info
;
195 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
);
197 INIT_DISASSEMBLE_INFO(disasm_info
, out
, fprintf
);
199 disasm_info
.buffer
= code
;
200 disasm_info
.buffer_vma
= (unsigned long)code
;
201 disasm_info
.buffer_length
= size
;
203 #ifdef WORDS_BIGENDIAN
204 disasm_info
.endian
= BFD_ENDIAN_BIG
;
206 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
208 #if defined(__i386__)
209 disasm_info
.mach
= bfd_mach_i386_i386
;
210 print_insn
= print_insn_i386
;
211 #elif defined(__x86_64__)
212 disasm_info
.mach
= bfd_mach_x86_64
;
213 print_insn
= print_insn_i386
;
214 #elif defined(__powerpc__)
215 print_insn
= print_insn_ppc
;
216 #elif defined(__alpha__)
217 print_insn
= print_insn_alpha
;
218 #elif defined(__sparc__)
219 print_insn
= print_insn_sparc
;
220 #elif defined(__arm__)
221 print_insn
= print_insn_arm
;
223 fprintf(out
, "0x%lx: Asm output not supported on this arch\n",
227 for (pc
= (unsigned long)code
; pc
< (unsigned long)code
+ size
; pc
+= count
) {
228 fprintf(out
, "0x%08lx: ", pc
);
230 /* since data are included in the code, it is better to
231 display code data too */
233 fprintf(out
, "%08x ", (int)bfd_getl32((const bfd_byte
*)pc
));
236 count
= print_insn(pc
, &disasm_info
);
243 /* Look up symbol for debugging purpose. Returns "" if unknown. */
244 const char *lookup_symbol(target_ulong orig_addr
)
247 /* Hack, because we know this is x86. */
251 for (s
= syminfos
; s
; s
= s
->next
) {
252 sym
= s
->disas_symtab
;
253 for (i
= 0; i
< s
->disas_num_syms
; i
++) {
254 if (sym
[i
].st_shndx
== SHN_UNDEF
255 || sym
[i
].st_shndx
>= SHN_LORESERVE
)
258 if (ELF_ST_TYPE(sym
[i
].st_info
) != STT_FUNC
)
261 if (orig_addr
>= sym
[i
].st_value
262 && orig_addr
< sym
[i
].st_value
+ sym
[i
].st_size
)
263 return s
->disas_strtab
+ sym
[i
].st_name
;
269 #if !defined(CONFIG_USER_ONLY)
271 void term_vprintf(const char *fmt
, va_list ap
);
272 void term_printf(const char *fmt
, ...);
274 static int monitor_disas_is_physical
;
277 monitor_read_memory (memaddr
, myaddr
, length
, info
)
281 struct disassemble_info
*info
;
283 if (monitor_disas_is_physical
) {
284 cpu_physical_memory_rw(memaddr
, myaddr
, length
, 0);
286 cpu_memory_rw_debug(cpu_single_env
, memaddr
,myaddr
, length
, 0);
291 static int monitor_fprintf(FILE *stream
, const char *fmt
, ...)
295 term_vprintf(fmt
, ap
);
300 void monitor_disas(target_ulong pc
, int nb_insn
, int is_physical
, int flags
)
303 struct disassemble_info disasm_info
;
304 int (*print_insn
)(bfd_vma pc
, disassemble_info
*info
);
306 INIT_DISASSEMBLE_INFO(disasm_info
, NULL
, monitor_fprintf
);
308 monitor_disas_is_physical
= is_physical
;
309 disasm_info
.read_memory_func
= monitor_read_memory
;
311 disasm_info
.buffer_vma
= pc
;
313 #ifdef TARGET_WORDS_BIGENDIAN
314 disasm_info
.endian
= BFD_ENDIAN_BIG
;
316 disasm_info
.endian
= BFD_ENDIAN_LITTLE
;
318 #if defined(TARGET_I386)
320 disasm_info
.mach
= bfd_mach_x86_64
;
322 disasm_info
.mach
= bfd_mach_i386_i8086
;
324 disasm_info
.mach
= bfd_mach_i386_i386
;
325 print_insn
= print_insn_i386
;
326 #elif defined(TARGET_ARM)
327 print_insn
= print_insn_arm
;
328 #elif defined(TARGET_SPARC)
329 print_insn
= print_insn_sparc
;
330 #elif defined(TARGET_PPC)
331 print_insn
= print_insn_ppc
;
333 term_printf("0x" TARGET_FMT_lx
334 ": Asm output not supported on this arch\n", pc
);
338 for(i
= 0; i
< nb_insn
; i
++) {
339 term_printf("0x" TARGET_FMT_lx
": ", pc
);
340 count
= print_insn(pc
, &disasm_info
);