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Commit | Line | Data |
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b9adb4a6 | 1 | /* General "disassemble this chunk" code. Used for debugging. */ |
5bbe9299 | 2 | #include "config.h" |
b9adb4a6 | 3 | #include "dis-asm.h" |
b9adb4a6 | 4 | #include "elf.h" |
aa0aa4fa | 5 | #include <errno.h> |
b9adb4a6 | 6 | |
c6105c0a FB |
7 | #include "cpu.h" |
8 | #include "exec-all.h" | |
9307c4c1 | 9 | #include "disas.h" |
c6105c0a | 10 | |
b9adb4a6 | 11 | /* Filled in by elfload.c. Simplistic, but will do for now. */ |
e80cfcfc | 12 | struct syminfo *syminfos = NULL; |
b9adb4a6 | 13 | |
aa0aa4fa FB |
14 | /* Get LENGTH bytes from info's buffer, at target address memaddr. |
15 | Transfer them to myaddr. */ | |
16 | int | |
17 | buffer_read_memory (memaddr, myaddr, length, info) | |
18 | bfd_vma memaddr; | |
19 | bfd_byte *myaddr; | |
20 | int length; | |
21 | struct disassemble_info *info; | |
22 | { | |
c6105c0a FB |
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. */ | |
26 | return EIO; | |
27 | memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length); | |
28 | return 0; | |
aa0aa4fa FB |
29 | } |
30 | ||
c6105c0a FB |
31 | /* Get LENGTH bytes from info's buffer, at target address memaddr. |
32 | Transfer them to myaddr. */ | |
33 | static int | |
c27004ec FB |
34 | target_read_memory (bfd_vma memaddr, |
35 | bfd_byte *myaddr, | |
36 | int length, | |
37 | struct disassemble_info *info) | |
c6105c0a FB |
38 | { |
39 | int i; | |
40 | for(i = 0; i < length; i++) { | |
c27004ec | 41 | myaddr[i] = ldub_code(memaddr + i); |
c6105c0a FB |
42 | } |
43 | return 0; | |
44 | } | |
c6105c0a | 45 | |
aa0aa4fa FB |
46 | /* Print an error message. We can assume that this is in response to |
47 | an error return from buffer_read_memory. */ | |
48 | void | |
49 | perror_memory (status, memaddr, info) | |
50 | int status; | |
51 | bfd_vma memaddr; | |
52 | struct disassemble_info *info; | |
53 | { | |
54 | if (status != EIO) | |
55 | /* Can't happen. */ | |
56 | (*info->fprintf_func) (info->stream, "Unknown error %d\n", status); | |
57 | else | |
58 | /* Actually, address between memaddr and memaddr + len was | |
59 | out of bounds. */ | |
60 | (*info->fprintf_func) (info->stream, | |
26a76461 | 61 | "Address 0x%" PRIx64 " is out of bounds.\n", memaddr); |
aa0aa4fa FB |
62 | } |
63 | ||
64 | /* This could be in a separate file, to save miniscule amounts of space | |
65 | in statically linked executables. */ | |
66 | ||
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 | |
69 | addresses). */ | |
70 | ||
71 | void | |
72 | generic_print_address (addr, info) | |
73 | bfd_vma addr; | |
74 | struct disassemble_info *info; | |
75 | { | |
26a76461 | 76 | (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr); |
aa0aa4fa FB |
77 | } |
78 | ||
79 | /* Just return the given address. */ | |
80 | ||
81 | int | |
82 | generic_symbol_at_address (addr, info) | |
83 | bfd_vma addr; | |
84 | struct disassemble_info * info; | |
85 | { | |
86 | return 1; | |
87 | } | |
88 | ||
89 | bfd_vma bfd_getl32 (const bfd_byte *addr) | |
90 | { | |
91 | unsigned long v; | |
92 | ||
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; | |
97 | return (bfd_vma) v; | |
98 | } | |
99 | ||
100 | bfd_vma bfd_getb32 (const bfd_byte *addr) | |
101 | { | |
102 | unsigned long v; | |
103 | ||
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]; | |
108 | return (bfd_vma) v; | |
109 | } | |
110 | ||
6af0bf9c FB |
111 | bfd_vma bfd_getl16 (const bfd_byte *addr) |
112 | { | |
113 | unsigned long v; | |
114 | ||
115 | v = (unsigned long) addr[0]; | |
116 | v |= (unsigned long) addr[1] << 8; | |
117 | return (bfd_vma) v; | |
118 | } | |
119 | ||
120 | bfd_vma bfd_getb16 (const bfd_byte *addr) | |
121 | { | |
122 | unsigned long v; | |
123 | ||
124 | v = (unsigned long) addr[0] << 24; | |
125 | v |= (unsigned long) addr[1] << 16; | |
126 | return (bfd_vma) v; | |
127 | } | |
128 | ||
c2d551ff FB |
129 | #ifdef TARGET_ARM |
130 | static int | |
131 | print_insn_thumb1(bfd_vma pc, disassemble_info *info) | |
132 | { | |
133 | return print_insn_arm(pc | 1, info); | |
134 | } | |
135 | #endif | |
136 | ||
137 | /* Disassemble this for me please... (debugging). 'flags' has teh following | |
138 | values: | |
139 | i386 - nonzero means 16 bit code | |
140 | arm - nonzero means thumb code | |
6a00d601 | 141 | ppc - nonzero means little endian |
c2d551ff FB |
142 | other targets - unused |
143 | */ | |
83b34f8b | 144 | void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) |
b9adb4a6 | 145 | { |
c27004ec | 146 | target_ulong pc; |
b9adb4a6 FB |
147 | int count; |
148 | struct disassemble_info disasm_info; | |
149 | int (*print_insn)(bfd_vma pc, disassemble_info *info); | |
150 | ||
151 | INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf); | |
152 | ||
c27004ec FB |
153 | disasm_info.read_memory_func = target_read_memory; |
154 | disasm_info.buffer_vma = code; | |
155 | disasm_info.buffer_length = size; | |
156 | ||
157 | #ifdef TARGET_WORDS_BIGENDIAN | |
158 | disasm_info.endian = BFD_ENDIAN_BIG; | |
159 | #else | |
160 | disasm_info.endian = BFD_ENDIAN_LITTLE; | |
161 | #endif | |
162 | #if defined(TARGET_I386) | |
163 | if (flags == 2) | |
164 | disasm_info.mach = bfd_mach_x86_64; | |
165 | else if (flags == 1) | |
166 | disasm_info.mach = bfd_mach_i386_i8086; | |
167 | else | |
168 | disasm_info.mach = bfd_mach_i386_i386; | |
169 | print_insn = print_insn_i386; | |
170 | #elif defined(TARGET_ARM) | |
c2d551ff FB |
171 | if (flags) |
172 | print_insn = print_insn_thumb1; | |
173 | else | |
174 | print_insn = print_insn_arm; | |
c27004ec FB |
175 | #elif defined(TARGET_SPARC) |
176 | print_insn = print_insn_sparc; | |
3475187d FB |
177 | #ifdef TARGET_SPARC64 |
178 | disasm_info.mach = bfd_mach_sparc_v9b; | |
179 | #endif | |
c27004ec | 180 | #elif defined(TARGET_PPC) |
6a00d601 | 181 | if (flags) |
111bfab3 | 182 | disasm_info.endian = BFD_ENDIAN_LITTLE; |
a2458627 FB |
183 | #ifdef TARGET_PPC64 |
184 | disasm_info.mach = bfd_mach_ppc64; | |
185 | #else | |
186 | disasm_info.mach = bfd_mach_ppc; | |
187 | #endif | |
c27004ec | 188 | print_insn = print_insn_ppc; |
6af0bf9c | 189 | #elif defined(TARGET_MIPS) |
76b3030c | 190 | #ifdef TARGET_WORDS_BIGENDIAN |
6af0bf9c | 191 | print_insn = print_insn_big_mips; |
76b3030c FB |
192 | #else |
193 | print_insn = print_insn_little_mips; | |
194 | #endif | |
48024e4a FB |
195 | #elif defined(TARGET_M68K) |
196 | print_insn = print_insn_m68k; | |
fdf9b3e8 FB |
197 | #elif defined(TARGET_SH4) |
198 | disasm_info.mach = bfd_mach_sh4; | |
199 | print_insn = print_insn_sh; | |
c27004ec | 200 | #else |
b8076a74 FB |
201 | fprintf(out, "0x" TARGET_FMT_lx |
202 | ": Asm output not supported on this arch\n", code); | |
c27004ec | 203 | return; |
c6105c0a FB |
204 | #endif |
205 | ||
c27004ec | 206 | for (pc = code; pc < code + size; pc += count) { |
fa15e030 | 207 | fprintf(out, "0x" TARGET_FMT_lx ": ", pc); |
c27004ec FB |
208 | count = print_insn(pc, &disasm_info); |
209 | #if 0 | |
210 | { | |
211 | int i; | |
212 | uint8_t b; | |
213 | fprintf(out, " {"); | |
214 | for(i = 0; i < count; i++) { | |
215 | target_read_memory(pc + i, &b, 1, &disasm_info); | |
216 | fprintf(out, " %02x", b); | |
217 | } | |
218 | fprintf(out, " }"); | |
219 | } | |
220 | #endif | |
221 | fprintf(out, "\n"); | |
222 | if (count < 0) | |
223 | break; | |
224 | } | |
225 | } | |
226 | ||
227 | /* Disassemble this for me please... (debugging). */ | |
228 | void disas(FILE *out, void *code, unsigned long size) | |
229 | { | |
230 | unsigned long pc; | |
231 | int count; | |
232 | struct disassemble_info disasm_info; | |
233 | int (*print_insn)(bfd_vma pc, disassemble_info *info); | |
234 | ||
235 | INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf); | |
236 | ||
b9adb4a6 FB |
237 | disasm_info.buffer = code; |
238 | disasm_info.buffer_vma = (unsigned long)code; | |
239 | disasm_info.buffer_length = size; | |
240 | ||
b9adb4a6 | 241 | #ifdef WORDS_BIGENDIAN |
c27004ec | 242 | disasm_info.endian = BFD_ENDIAN_BIG; |
b9adb4a6 | 243 | #else |
c27004ec | 244 | disasm_info.endian = BFD_ENDIAN_LITTLE; |
b9adb4a6 | 245 | #endif |
bc51c5c9 | 246 | #if defined(__i386__) |
c27004ec FB |
247 | disasm_info.mach = bfd_mach_i386_i386; |
248 | print_insn = print_insn_i386; | |
bc51c5c9 | 249 | #elif defined(__x86_64__) |
c27004ec FB |
250 | disasm_info.mach = bfd_mach_x86_64; |
251 | print_insn = print_insn_i386; | |
b9adb4a6 | 252 | #elif defined(__powerpc__) |
c27004ec | 253 | print_insn = print_insn_ppc; |
a993ba85 | 254 | #elif defined(__alpha__) |
c27004ec | 255 | print_insn = print_insn_alpha; |
aa0aa4fa | 256 | #elif defined(__sparc__) |
c27004ec | 257 | print_insn = print_insn_sparc; |
aa0aa4fa | 258 | #elif defined(__arm__) |
c27004ec | 259 | print_insn = print_insn_arm; |
6af0bf9c FB |
260 | #elif defined(__MIPSEB__) |
261 | print_insn = print_insn_big_mips; | |
262 | #elif defined(__MIPSEL__) | |
263 | print_insn = print_insn_little_mips; | |
48024e4a FB |
264 | #elif defined(__m68k__) |
265 | print_insn = print_insn_m68k; | |
b9adb4a6 | 266 | #else |
b8076a74 FB |
267 | fprintf(out, "0x%lx: Asm output not supported on this arch\n", |
268 | (long) code); | |
c27004ec | 269 | return; |
b9adb4a6 | 270 | #endif |
c27004ec FB |
271 | for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) { |
272 | fprintf(out, "0x%08lx: ", pc); | |
aa0aa4fa | 273 | #ifdef __arm__ |
46152182 | 274 | /* since data is included in the code, it is better to |
aa0aa4fa | 275 | display code data too */ |
46152182 | 276 | fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc)); |
aa0aa4fa | 277 | #endif |
c27004ec | 278 | count = print_insn(pc, &disasm_info); |
b9adb4a6 FB |
279 | fprintf(out, "\n"); |
280 | if (count < 0) | |
281 | break; | |
282 | } | |
283 | } | |
284 | ||
285 | /* Look up symbol for debugging purpose. Returns "" if unknown. */ | |
c27004ec | 286 | const char *lookup_symbol(target_ulong orig_addr) |
b9adb4a6 FB |
287 | { |
288 | unsigned int i; | |
289 | /* Hack, because we know this is x86. */ | |
e80cfcfc FB |
290 | Elf32_Sym *sym; |
291 | struct syminfo *s; | |
b3ecf620 | 292 | target_ulong addr; |
e80cfcfc FB |
293 | |
294 | for (s = syminfos; s; s = s->next) { | |
295 | sym = s->disas_symtab; | |
296 | for (i = 0; i < s->disas_num_syms; i++) { | |
297 | if (sym[i].st_shndx == SHN_UNDEF | |
298 | || sym[i].st_shndx >= SHN_LORESERVE) | |
299 | continue; | |
b9adb4a6 | 300 | |
e80cfcfc FB |
301 | if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC) |
302 | continue; | |
b9adb4a6 | 303 | |
b3ecf620 FB |
304 | addr = sym[i].st_value; |
305 | #ifdef TARGET_ARM | |
306 | /* The bottom address bit marks a Thumb symbol. */ | |
307 | addr &= ~(target_ulong)1; | |
308 | #endif | |
309 | if (orig_addr >= addr | |
310 | && orig_addr < addr + sym[i].st_size) | |
e80cfcfc FB |
311 | return s->disas_strtab + sym[i].st_name; |
312 | } | |
b9adb4a6 FB |
313 | } |
314 | return ""; | |
315 | } | |
9307c4c1 FB |
316 | |
317 | #if !defined(CONFIG_USER_ONLY) | |
318 | ||
3d2cfdf1 FB |
319 | void term_vprintf(const char *fmt, va_list ap); |
320 | void term_printf(const char *fmt, ...); | |
321 | ||
9307c4c1 | 322 | static int monitor_disas_is_physical; |
6a00d601 | 323 | static CPUState *monitor_disas_env; |
9307c4c1 FB |
324 | |
325 | static int | |
326 | monitor_read_memory (memaddr, myaddr, length, info) | |
327 | bfd_vma memaddr; | |
328 | bfd_byte *myaddr; | |
329 | int length; | |
330 | struct disassemble_info *info; | |
331 | { | |
332 | if (monitor_disas_is_physical) { | |
333 | cpu_physical_memory_rw(memaddr, myaddr, length, 0); | |
334 | } else { | |
6a00d601 | 335 | cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0); |
9307c4c1 FB |
336 | } |
337 | return 0; | |
338 | } | |
339 | ||
3d2cfdf1 FB |
340 | static int monitor_fprintf(FILE *stream, const char *fmt, ...) |
341 | { | |
342 | va_list ap; | |
343 | va_start(ap, fmt); | |
344 | term_vprintf(fmt, ap); | |
345 | va_end(ap); | |
346 | return 0; | |
347 | } | |
348 | ||
6a00d601 FB |
349 | void monitor_disas(CPUState *env, |
350 | target_ulong pc, int nb_insn, int is_physical, int flags) | |
9307c4c1 | 351 | { |
9307c4c1 FB |
352 | int count, i; |
353 | struct disassemble_info disasm_info; | |
354 | int (*print_insn)(bfd_vma pc, disassemble_info *info); | |
355 | ||
3d2cfdf1 | 356 | INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf); |
9307c4c1 | 357 | |
6a00d601 | 358 | monitor_disas_env = env; |
9307c4c1 FB |
359 | monitor_disas_is_physical = is_physical; |
360 | disasm_info.read_memory_func = monitor_read_memory; | |
361 | ||
362 | disasm_info.buffer_vma = pc; | |
363 | ||
364 | #ifdef TARGET_WORDS_BIGENDIAN | |
365 | disasm_info.endian = BFD_ENDIAN_BIG; | |
366 | #else | |
367 | disasm_info.endian = BFD_ENDIAN_LITTLE; | |
368 | #endif | |
369 | #if defined(TARGET_I386) | |
fa15e030 FB |
370 | if (flags == 2) |
371 | disasm_info.mach = bfd_mach_x86_64; | |
372 | else if (flags == 1) | |
9307c4c1 | 373 | disasm_info.mach = bfd_mach_i386_i8086; |
fa15e030 FB |
374 | else |
375 | disasm_info.mach = bfd_mach_i386_i386; | |
9307c4c1 FB |
376 | print_insn = print_insn_i386; |
377 | #elif defined(TARGET_ARM) | |
378 | print_insn = print_insn_arm; | |
379 | #elif defined(TARGET_SPARC) | |
380 | print_insn = print_insn_sparc; | |
381 | #elif defined(TARGET_PPC) | |
a2458627 FB |
382 | #ifdef TARGET_PPC64 |
383 | disasm_info.mach = bfd_mach_ppc64; | |
384 | #else | |
385 | disasm_info.mach = bfd_mach_ppc; | |
386 | #endif | |
9307c4c1 | 387 | print_insn = print_insn_ppc; |
6af0bf9c | 388 | #elif defined(TARGET_MIPS) |
76b3030c | 389 | #ifdef TARGET_WORDS_BIGENDIAN |
6af0bf9c | 390 | print_insn = print_insn_big_mips; |
76b3030c FB |
391 | #else |
392 | print_insn = print_insn_little_mips; | |
393 | #endif | |
48024e4a FB |
394 | #elif defined(TARGET_M68K) |
395 | print_insn = print_insn_m68k; | |
9307c4c1 | 396 | #else |
b8076a74 FB |
397 | term_printf("0x" TARGET_FMT_lx |
398 | ": Asm output not supported on this arch\n", pc); | |
9307c4c1 FB |
399 | return; |
400 | #endif | |
401 | ||
402 | for(i = 0; i < nb_insn; i++) { | |
fa15e030 | 403 | term_printf("0x" TARGET_FMT_lx ": ", pc); |
9307c4c1 | 404 | count = print_insn(pc, &disasm_info); |
3d2cfdf1 | 405 | term_printf("\n"); |
9307c4c1 FB |
406 | if (count < 0) |
407 | break; | |
408 | pc += count; | |
409 | } | |
410 | } | |
411 | #endif |