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(bfd_vma memaddr, bfd_byte *myaddr, int length,
18 struct disassemble_info *info)
20 if (memaddr < info->buffer_vma
21 || memaddr + length > info->buffer_vma + info->buffer_length)
22 /* Out of bounds. Use EIO because GDB uses it. */
24 memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
28 /* Get LENGTH bytes from info's buffer, at target address memaddr.
29 Transfer them to myaddr. */
31 target_read_memory (bfd_vma memaddr,
34 struct disassemble_info *info)
37 for(i = 0; i < length; i++) {
38 myaddr[i] = ldub_code(memaddr + i);
43 /* Print an error message. We can assume that this is in response to
44 an error return from buffer_read_memory. */
46 perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info)
50 (*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
52 /* Actually, address between memaddr and memaddr + len was
54 (*info->fprintf_func) (info->stream,
55 "Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
58 /* This could be in a separate file, to save miniscule amounts of space
59 in statically linked executables. */
61 /* Just print the address is hex. This is included for completeness even
62 though both GDB and objdump provide their own (to print symbolic
66 generic_print_address (bfd_vma addr, struct disassemble_info *info)
68 (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
71 /* Just return the given address. */
74 generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info)
79 bfd_vma bfd_getl32 (const bfd_byte *addr)
83 v = (unsigned long) addr[0];
84 v |= (unsigned long) addr[1] << 8;
85 v |= (unsigned long) addr[2] << 16;
86 v |= (unsigned long) addr[3] << 24;
90 bfd_vma bfd_getb32 (const bfd_byte *addr)
94 v = (unsigned long) addr[0] << 24;
95 v |= (unsigned long) addr[1] << 16;
96 v |= (unsigned long) addr[2] << 8;
97 v |= (unsigned long) addr[3];
101 bfd_vma bfd_getl16 (const bfd_byte *addr)
105 v = (unsigned long) addr[0];
106 v |= (unsigned long) addr[1] << 8;
110 bfd_vma bfd_getb16 (const bfd_byte *addr)
114 v = (unsigned long) addr[0] << 24;
115 v |= (unsigned long) addr[1] << 16;
121 print_insn_thumb1(bfd_vma pc, disassemble_info *info)
123 return print_insn_arm(pc | 1, info);
127 /* Disassemble this for me please... (debugging). 'flags' has the following
129 i386 - nonzero means 16 bit code
130 arm - nonzero means thumb code
131 ppc - nonzero means little endian
132 other targets - unused
134 void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
138 struct disassemble_info disasm_info;
139 int (*print_insn)(bfd_vma pc, disassemble_info *info);
141 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
143 disasm_info.read_memory_func = target_read_memory;
144 disasm_info.buffer_vma = code;
145 disasm_info.buffer_length = size;
147 #ifdef TARGET_WORDS_BIGENDIAN
148 disasm_info.endian = BFD_ENDIAN_BIG;
150 disasm_info.endian = BFD_ENDIAN_LITTLE;
152 #if defined(TARGET_I386)
154 disasm_info.mach = bfd_mach_x86_64;
156 disasm_info.mach = bfd_mach_i386_i8086;
158 disasm_info.mach = bfd_mach_i386_i386;
159 print_insn = print_insn_i386;
160 #elif defined(TARGET_ARM)
162 print_insn = print_insn_thumb1;
164 print_insn = print_insn_arm;
165 #elif defined(TARGET_SPARC)
166 print_insn = print_insn_sparc;
167 #ifdef TARGET_SPARC64
168 disasm_info.mach = bfd_mach_sparc_v9b;
170 #elif defined(TARGET_PPC)
172 disasm_info.endian = BFD_ENDIAN_LITTLE;
173 if (flags & 0xFFFF) {
174 /* If we have a precise definitions of the instructions set, use it */
175 disasm_info.mach = flags & 0xFFFF;
178 disasm_info.mach = bfd_mach_ppc64;
180 disasm_info.mach = bfd_mach_ppc;
183 print_insn = print_insn_ppc;
184 #elif defined(TARGET_M68K)
185 print_insn = print_insn_m68k;
186 #elif defined(TARGET_MIPS)
187 #ifdef TARGET_WORDS_BIGENDIAN
188 print_insn = print_insn_big_mips;
190 print_insn = print_insn_little_mips;
192 #elif defined(TARGET_SH4)
193 disasm_info.mach = bfd_mach_sh4;
194 print_insn = print_insn_sh;
195 #elif defined(TARGET_ALPHA)
196 disasm_info.mach = bfd_mach_alpha;
197 print_insn = print_insn_alpha;
198 #elif defined(TARGET_CRIS)
199 disasm_info.mach = bfd_mach_cris_v32;
200 print_insn = print_insn_crisv32;
202 fprintf(out, "0x" TARGET_FMT_lx
203 ": Asm output not supported on this arch\n", code);
207 for (pc = code; size > 0; pc += count, size -= count) {
208 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
209 count = print_insn(pc, &disasm_info);
215 for(i = 0; i < count; i++) {
216 target_read_memory(pc + i, &b, 1, &disasm_info);
217 fprintf(out, " %02x", b);
227 "Disassembler disagrees with translator over instruction "
229 "Please report this to qemu-devel@nongnu.org\n");
235 /* Disassemble this for me please... (debugging). */
236 void disas(FILE *out, void *code, unsigned long size)
240 struct disassemble_info disasm_info;
241 int (*print_insn)(bfd_vma pc, disassemble_info *info);
243 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
245 disasm_info.buffer = code;
246 disasm_info.buffer_vma = (unsigned long)code;
247 disasm_info.buffer_length = size;
249 #ifdef WORDS_BIGENDIAN
250 disasm_info.endian = BFD_ENDIAN_BIG;
252 disasm_info.endian = BFD_ENDIAN_LITTLE;
254 #if defined(__i386__)
255 disasm_info.mach = bfd_mach_i386_i386;
256 print_insn = print_insn_i386;
257 #elif defined(__x86_64__)
258 disasm_info.mach = bfd_mach_x86_64;
259 print_insn = print_insn_i386;
260 #elif defined(_ARCH_PPC)
261 print_insn = print_insn_ppc;
262 #elif defined(__alpha__)
263 print_insn = print_insn_alpha;
264 #elif defined(__sparc__)
265 print_insn = print_insn_sparc;
266 #if defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
267 disasm_info.mach = bfd_mach_sparc_v9b;
269 #elif defined(__arm__)
270 print_insn = print_insn_arm;
271 #elif defined(__MIPSEB__)
272 print_insn = print_insn_big_mips;
273 #elif defined(__MIPSEL__)
274 print_insn = print_insn_little_mips;
275 #elif defined(__m68k__)
276 print_insn = print_insn_m68k;
277 #elif defined(__s390__)
278 print_insn = print_insn_s390;
279 #elif defined(__hppa__)
280 print_insn = print_insn_hppa;
282 fprintf(out, "0x%lx: Asm output not supported on this arch\n",
286 for (pc = (unsigned long)code; size > 0; pc += count, size -= count) {
287 fprintf(out, "0x%08lx: ", pc);
289 /* since data is included in the code, it is better to
290 display code data too */
291 fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
293 count = print_insn(pc, &disasm_info);
300 /* Look up symbol for debugging purpose. Returns "" if unknown. */
301 const char *lookup_symbol(target_ulong orig_addr)
303 const char *symbol = "";
306 for (s = syminfos; s; s = s->next) {
307 symbol = s->lookup_symbol(s, orig_addr);
308 if (symbol[0] != '\0') {
316 #if !defined(CONFIG_USER_ONLY)
320 static int monitor_disas_is_physical;
321 static CPUState *monitor_disas_env;
324 monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
325 struct disassemble_info *info)
327 if (monitor_disas_is_physical) {
328 cpu_physical_memory_rw(memaddr, myaddr, length, 0);
330 cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
335 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
339 monitor_vprintf((Monitor *)stream, fmt, ap);
344 void monitor_disas(Monitor *mon, CPUState *env,
345 target_ulong pc, int nb_insn, int is_physical, int flags)
348 struct disassemble_info disasm_info;
349 int (*print_insn)(bfd_vma pc, disassemble_info *info);
351 INIT_DISASSEMBLE_INFO(disasm_info, (FILE *)mon, monitor_fprintf);
353 monitor_disas_env = env;
354 monitor_disas_is_physical = is_physical;
355 disasm_info.read_memory_func = monitor_read_memory;
357 disasm_info.buffer_vma = pc;
359 #ifdef TARGET_WORDS_BIGENDIAN
360 disasm_info.endian = BFD_ENDIAN_BIG;
362 disasm_info.endian = BFD_ENDIAN_LITTLE;
364 #if defined(TARGET_I386)
366 disasm_info.mach = bfd_mach_x86_64;
368 disasm_info.mach = bfd_mach_i386_i8086;
370 disasm_info.mach = bfd_mach_i386_i386;
371 print_insn = print_insn_i386;
372 #elif defined(TARGET_ARM)
373 print_insn = print_insn_arm;
374 #elif defined(TARGET_ALPHA)
375 print_insn = print_insn_alpha;
376 #elif defined(TARGET_SPARC)
377 print_insn = print_insn_sparc;
378 #ifdef TARGET_SPARC64
379 disasm_info.mach = bfd_mach_sparc_v9b;
381 #elif defined(TARGET_PPC)
383 disasm_info.mach = bfd_mach_ppc64;
385 disasm_info.mach = bfd_mach_ppc;
387 print_insn = print_insn_ppc;
388 #elif defined(TARGET_M68K)
389 print_insn = print_insn_m68k;
390 #elif defined(TARGET_MIPS)
391 #ifdef TARGET_WORDS_BIGENDIAN
392 print_insn = print_insn_big_mips;
394 print_insn = print_insn_little_mips;
397 monitor_printf(mon, "0x" TARGET_FMT_lx
398 ": Asm output not supported on this arch\n", pc);
402 for(i = 0; i < nb_insn; i++) {
403 monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc);
404 count = print_insn(pc, &disasm_info);
405 monitor_printf(mon, "\n");