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;
191 fprintf(out, "0x" TARGET_FMT_lx
192 ": Asm output not supported on this arch\n", code);
196 for (pc = code; pc < code + size; pc += count) {
197 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
198 count = print_insn(pc, &disasm_info);
204 for(i = 0; i < count; i++) {
205 target_read_memory(pc + i, &b, 1, &disasm_info);
206 fprintf(out, " %02x", b);
217 /* Disassemble this for me please... (debugging). */
218 void disas(FILE *out, void *code, unsigned long size)
222 struct disassemble_info disasm_info;
223 int (*print_insn)(bfd_vma pc, disassemble_info *info);
225 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
227 disasm_info.buffer = code;
228 disasm_info.buffer_vma = (unsigned long)code;
229 disasm_info.buffer_length = size;
231 #ifdef WORDS_BIGENDIAN
232 disasm_info.endian = BFD_ENDIAN_BIG;
234 disasm_info.endian = BFD_ENDIAN_LITTLE;
236 #if defined(__i386__)
237 disasm_info.mach = bfd_mach_i386_i386;
238 print_insn = print_insn_i386;
239 #elif defined(__x86_64__)
240 disasm_info.mach = bfd_mach_x86_64;
241 print_insn = print_insn_i386;
242 #elif defined(__powerpc__)
243 print_insn = print_insn_ppc;
244 #elif defined(__alpha__)
245 print_insn = print_insn_alpha;
246 #elif defined(__sparc__)
247 print_insn = print_insn_sparc;
248 #elif defined(__arm__)
249 print_insn = print_insn_arm;
250 #elif defined(__MIPSEB__)
251 print_insn = print_insn_big_mips;
252 #elif defined(__MIPSEL__)
253 print_insn = print_insn_little_mips;
255 fprintf(out, "0x%lx: Asm output not supported on this arch\n",
259 for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) {
260 fprintf(out, "0x%08lx: ", pc);
262 /* since data are included in the code, it is better to
263 display code data too */
265 fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
268 count = print_insn(pc, &disasm_info);
275 /* Look up symbol for debugging purpose. Returns "" if unknown. */
276 const char *lookup_symbol(target_ulong orig_addr)
279 /* Hack, because we know this is x86. */
284 for (s = syminfos; s; s = s->next) {
285 sym = s->disas_symtab;
286 for (i = 0; i < s->disas_num_syms; i++) {
287 if (sym[i].st_shndx == SHN_UNDEF
288 || sym[i].st_shndx >= SHN_LORESERVE)
291 if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
294 addr = sym[i].st_value;
296 /* The bottom address bit marks a Thumb symbol. */
297 addr &= ~(target_ulong)1;
299 if (orig_addr >= addr
300 && orig_addr < addr + sym[i].st_size)
301 return s->disas_strtab + sym[i].st_name;
307 #if !defined(CONFIG_USER_ONLY)
309 void term_vprintf(const char *fmt, va_list ap);
310 void term_printf(const char *fmt, ...);
312 static int monitor_disas_is_physical;
315 monitor_read_memory (memaddr, myaddr, length, info)
319 struct disassemble_info *info;
321 if (monitor_disas_is_physical) {
322 cpu_physical_memory_rw(memaddr, myaddr, length, 0);
324 cpu_memory_rw_debug(cpu_single_env, memaddr,myaddr, length, 0);
329 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
333 term_vprintf(fmt, ap);
338 void monitor_disas(target_ulong pc, int nb_insn, int is_physical, int flags)
341 struct disassemble_info disasm_info;
342 int (*print_insn)(bfd_vma pc, disassemble_info *info);
344 INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf);
346 monitor_disas_is_physical = is_physical;
347 disasm_info.read_memory_func = monitor_read_memory;
349 disasm_info.buffer_vma = pc;
351 #ifdef TARGET_WORDS_BIGENDIAN
352 disasm_info.endian = BFD_ENDIAN_BIG;
354 disasm_info.endian = BFD_ENDIAN_LITTLE;
356 #if defined(TARGET_I386)
358 disasm_info.mach = bfd_mach_x86_64;
360 disasm_info.mach = bfd_mach_i386_i8086;
362 disasm_info.mach = bfd_mach_i386_i386;
363 print_insn = print_insn_i386;
364 #elif defined(TARGET_ARM)
365 print_insn = print_insn_arm;
366 #elif defined(TARGET_SPARC)
367 print_insn = print_insn_sparc;
368 #elif defined(TARGET_PPC)
370 disasm_info.mach = bfd_mach_ppc64;
372 disasm_info.mach = bfd_mach_ppc;
374 print_insn = print_insn_ppc;
375 #elif defined(TARGET_MIPS)
376 print_insn = print_insn_big_mips;
378 term_printf("0x" TARGET_FMT_lx
379 ": Asm output not supported on this arch\n", pc);
383 for(i = 0; i < nb_insn; i++) {
384 term_printf("0x" TARGET_FMT_lx ": ", pc);
385 count = print_insn(pc, &disasm_info);