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);