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 ppc - nonzero means little endian
142 other targets - unused
144 void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
148 struct disassemble_info disasm_info;
149 int (*print_insn)(bfd_vma pc, disassemble_info *info);
151 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
153 disasm_info.read_memory_func = target_read_memory;
154 disasm_info.buffer_vma = code;
155 disasm_info.buffer_length = size;
157 #ifdef TARGET_WORDS_BIGENDIAN
158 disasm_info.endian = BFD_ENDIAN_BIG;
160 disasm_info.endian = BFD_ENDIAN_LITTLE;
162 #if defined(TARGET_I386)
164 disasm_info.mach = bfd_mach_x86_64;
166 disasm_info.mach = bfd_mach_i386_i8086;
168 disasm_info.mach = bfd_mach_i386_i386;
169 print_insn = print_insn_i386;
170 #elif defined(TARGET_ARM)
172 print_insn = print_insn_thumb1;
174 print_insn = print_insn_arm;
175 #elif defined(TARGET_SPARC)
176 print_insn = print_insn_sparc;
177 #ifdef TARGET_SPARC64
178 disasm_info.mach = bfd_mach_sparc_v9b;
180 #elif defined(TARGET_PPC)
182 disasm_info.endian = BFD_ENDIAN_LITTLE;
184 disasm_info.mach = bfd_mach_ppc64;
186 disasm_info.mach = bfd_mach_ppc;
188 print_insn = print_insn_ppc;
189 #elif defined(TARGET_MIPS)
190 #ifdef TARGET_WORDS_BIGENDIAN
191 print_insn = print_insn_big_mips;
193 print_insn = print_insn_little_mips;
195 #elif defined(TARGET_M68K)
196 print_insn = print_insn_m68k;
198 fprintf(out, "0x" TARGET_FMT_lx
199 ": Asm output not supported on this arch\n", code);
203 for (pc = code; pc < code + size; pc += count) {
204 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
205 count = print_insn(pc, &disasm_info);
211 for(i = 0; i < count; i++) {
212 target_read_memory(pc + i, &b, 1, &disasm_info);
213 fprintf(out, " %02x", b);
224 /* Disassemble this for me please... (debugging). */
225 void disas(FILE *out, void *code, unsigned long size)
229 struct disassemble_info disasm_info;
230 int (*print_insn)(bfd_vma pc, disassemble_info *info);
232 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
234 disasm_info.buffer = code;
235 disasm_info.buffer_vma = (unsigned long)code;
236 disasm_info.buffer_length = size;
238 #ifdef WORDS_BIGENDIAN
239 disasm_info.endian = BFD_ENDIAN_BIG;
241 disasm_info.endian = BFD_ENDIAN_LITTLE;
243 #if defined(__i386__)
244 disasm_info.mach = bfd_mach_i386_i386;
245 print_insn = print_insn_i386;
246 #elif defined(__x86_64__)
247 disasm_info.mach = bfd_mach_x86_64;
248 print_insn = print_insn_i386;
249 #elif defined(__powerpc__)
250 print_insn = print_insn_ppc;
251 #elif defined(__alpha__)
252 print_insn = print_insn_alpha;
253 #elif defined(__sparc__)
254 print_insn = print_insn_sparc;
255 #elif defined(__arm__)
256 print_insn = print_insn_arm;
257 #elif defined(__MIPSEB__)
258 print_insn = print_insn_big_mips;
259 #elif defined(__MIPSEL__)
260 print_insn = print_insn_little_mips;
261 #elif defined(__m68k__)
262 print_insn = print_insn_m68k;
264 fprintf(out, "0x%lx: Asm output not supported on this arch\n",
268 for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) {
269 fprintf(out, "0x%08lx: ", pc);
271 /* since data are included in the code, it is better to
272 display code data too */
274 fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
277 count = print_insn(pc, &disasm_info);
284 /* Look up symbol for debugging purpose. Returns "" if unknown. */
285 const char *lookup_symbol(target_ulong orig_addr)
288 /* Hack, because we know this is x86. */
293 for (s = syminfos; s; s = s->next) {
294 sym = s->disas_symtab;
295 for (i = 0; i < s->disas_num_syms; i++) {
296 if (sym[i].st_shndx == SHN_UNDEF
297 || sym[i].st_shndx >= SHN_LORESERVE)
300 if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
303 addr = sym[i].st_value;
305 /* The bottom address bit marks a Thumb symbol. */
306 addr &= ~(target_ulong)1;
308 if (orig_addr >= addr
309 && orig_addr < addr + sym[i].st_size)
310 return s->disas_strtab + sym[i].st_name;
316 #if !defined(CONFIG_USER_ONLY)
318 void term_vprintf(const char *fmt, va_list ap);
319 void term_printf(const char *fmt, ...);
321 static int monitor_disas_is_physical;
322 static CPUState *monitor_disas_env;
325 monitor_read_memory (memaddr, myaddr, length, info)
329 struct disassemble_info *info;
331 if (monitor_disas_is_physical) {
332 cpu_physical_memory_rw(memaddr, myaddr, length, 0);
334 cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
339 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
343 term_vprintf(fmt, ap);
348 void monitor_disas(CPUState *env,
349 target_ulong pc, int nb_insn, int is_physical, int flags)
352 struct disassemble_info disasm_info;
353 int (*print_insn)(bfd_vma pc, disassemble_info *info);
355 INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf);
357 monitor_disas_env = env;
358 monitor_disas_is_physical = is_physical;
359 disasm_info.read_memory_func = monitor_read_memory;
361 disasm_info.buffer_vma = pc;
363 #ifdef TARGET_WORDS_BIGENDIAN
364 disasm_info.endian = BFD_ENDIAN_BIG;
366 disasm_info.endian = BFD_ENDIAN_LITTLE;
368 #if defined(TARGET_I386)
370 disasm_info.mach = bfd_mach_x86_64;
372 disasm_info.mach = bfd_mach_i386_i8086;
374 disasm_info.mach = bfd_mach_i386_i386;
375 print_insn = print_insn_i386;
376 #elif defined(TARGET_ARM)
377 print_insn = print_insn_arm;
378 #elif defined(TARGET_SPARC)
379 print_insn = print_insn_sparc;
380 #elif defined(TARGET_PPC)
382 disasm_info.mach = bfd_mach_ppc64;
384 disasm_info.mach = bfd_mach_ppc;
386 print_insn = print_insn_ppc;
387 #elif defined(TARGET_MIPS)
388 #ifdef TARGET_WORDS_BIGENDIAN
389 print_insn = print_insn_big_mips;
391 print_insn = print_insn_little_mips;
393 #elif defined(TARGET_M68K)
394 print_insn = print_insn_m68k;
396 term_printf("0x" TARGET_FMT_lx
397 ": Asm output not supported on this arch\n", pc);
401 for(i = 0; i < nb_insn; i++) {
402 term_printf("0x" TARGET_FMT_lx ": ", pc);
403 count = print_insn(pc, &disasm_info);