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 /* Disassemble this for me please... (debugging). 'flags' is only used
112 for i386: non zero means 16 bit code */
113 void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
117 struct disassemble_info disasm_info;
118 int (*print_insn)(bfd_vma pc, disassemble_info *info);
120 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
122 disasm_info.read_memory_func = target_read_memory;
123 disasm_info.buffer_vma = code;
124 disasm_info.buffer_length = size;
126 #ifdef TARGET_WORDS_BIGENDIAN
127 disasm_info.endian = BFD_ENDIAN_BIG;
129 disasm_info.endian = BFD_ENDIAN_LITTLE;
131 #if defined(TARGET_I386)
133 disasm_info.mach = bfd_mach_x86_64;
135 disasm_info.mach = bfd_mach_i386_i8086;
137 disasm_info.mach = bfd_mach_i386_i386;
138 print_insn = print_insn_i386;
139 #elif defined(TARGET_ARM)
140 print_insn = print_insn_arm;
141 #elif defined(TARGET_SPARC)
142 print_insn = print_insn_sparc;
143 #elif defined(TARGET_PPC)
144 print_insn = print_insn_ppc;
146 fprintf(out, "Asm output not supported on this arch\n");
150 for (pc = code; pc < code + size; pc += count) {
151 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
152 count = print_insn(pc, &disasm_info);
158 for(i = 0; i < count; i++) {
159 target_read_memory(pc + i, &b, 1, &disasm_info);
160 fprintf(out, " %02x", b);
171 /* Disassemble this for me please... (debugging). */
172 void disas(FILE *out, void *code, unsigned long size)
176 struct disassemble_info disasm_info;
177 int (*print_insn)(bfd_vma pc, disassemble_info *info);
179 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
181 disasm_info.buffer = code;
182 disasm_info.buffer_vma = (unsigned long)code;
183 disasm_info.buffer_length = size;
185 #ifdef WORDS_BIGENDIAN
186 disasm_info.endian = BFD_ENDIAN_BIG;
188 disasm_info.endian = BFD_ENDIAN_LITTLE;
190 #if defined(__i386__)
191 disasm_info.mach = bfd_mach_i386_i386;
192 print_insn = print_insn_i386;
193 #elif defined(__x86_64__)
194 disasm_info.mach = bfd_mach_x86_64;
195 print_insn = print_insn_i386;
196 #elif defined(__powerpc__)
197 print_insn = print_insn_ppc;
198 #elif defined(__alpha__)
199 print_insn = print_insn_alpha;
200 #elif defined(__sparc__)
201 print_insn = print_insn_sparc;
202 #elif defined(__arm__)
203 print_insn = print_insn_arm;
205 fprintf(out, "Asm output not supported on this arch\n");
208 for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) {
209 fprintf(out, "0x%08lx: ", pc);
211 /* since data are included in the code, it is better to
212 display code data too */
214 fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
217 count = print_insn(pc, &disasm_info);
224 /* Look up symbol for debugging purpose. Returns "" if unknown. */
225 const char *lookup_symbol(target_ulong orig_addr)
228 /* Hack, because we know this is x86. */
232 for (s = syminfos; s; s = s->next) {
233 sym = s->disas_symtab;
234 for (i = 0; i < s->disas_num_syms; i++) {
235 if (sym[i].st_shndx == SHN_UNDEF
236 || sym[i].st_shndx >= SHN_LORESERVE)
239 if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
242 if (orig_addr >= sym[i].st_value
243 && orig_addr < sym[i].st_value + sym[i].st_size)
244 return s->disas_strtab + sym[i].st_name;
250 #if !defined(CONFIG_USER_ONLY)
252 void term_vprintf(const char *fmt, va_list ap);
253 void term_printf(const char *fmt, ...);
255 static int monitor_disas_is_physical;
258 monitor_read_memory (memaddr, myaddr, length, info)
262 struct disassemble_info *info;
264 if (monitor_disas_is_physical) {
265 cpu_physical_memory_rw(memaddr, myaddr, length, 0);
267 cpu_memory_rw_debug(cpu_single_env, memaddr,myaddr, length, 0);
272 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
276 term_vprintf(fmt, ap);
281 void monitor_disas(target_ulong pc, int nb_insn, int is_physical, int flags)
284 struct disassemble_info disasm_info;
285 int (*print_insn)(bfd_vma pc, disassemble_info *info);
287 INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf);
289 monitor_disas_is_physical = is_physical;
290 disasm_info.read_memory_func = monitor_read_memory;
292 disasm_info.buffer_vma = pc;
294 #ifdef TARGET_WORDS_BIGENDIAN
295 disasm_info.endian = BFD_ENDIAN_BIG;
297 disasm_info.endian = BFD_ENDIAN_LITTLE;
299 #if defined(TARGET_I386)
301 disasm_info.mach = bfd_mach_x86_64;
303 disasm_info.mach = bfd_mach_i386_i8086;
305 disasm_info.mach = bfd_mach_i386_i386;
306 print_insn = print_insn_i386;
307 #elif defined(TARGET_ARM)
308 print_insn = print_insn_arm;
309 #elif defined(TARGET_SPARC)
310 print_insn = print_insn_sparc;
311 #elif defined(TARGET_PPC)
312 print_insn = print_insn_ppc;
314 term_printf("Asm output not supported on this arch\n");
318 for(i = 0; i < nb_insn; i++) {
319 term_printf("0x" TARGET_FMT_lx ": ", pc);
320 count = print_insn(pc, &disasm_info);