]> git.proxmox.com Git - qemu.git/blame - disas.c
Fix error handling in net_client_init() (Mark McLoughlin)
[qemu.git] / disas.c
CommitLineData
b9adb4a6 1/* General "disassemble this chunk" code. Used for debugging. */
5bbe9299 2#include "config.h"
b9adb4a6 3#include "dis-asm.h"
b9adb4a6 4#include "elf.h"
aa0aa4fa 5#include <errno.h>
b9adb4a6 6
c6105c0a
FB
7#include "cpu.h"
8#include "exec-all.h"
9307c4c1 9#include "disas.h"
c6105c0a 10
b9adb4a6 11/* Filled in by elfload.c. Simplistic, but will do for now. */
e80cfcfc 12struct syminfo *syminfos = NULL;
b9adb4a6 13
aa0aa4fa
FB
14/* Get LENGTH bytes from info's buffer, at target address memaddr.
15 Transfer them to myaddr. */
16int
3a742b76
PB
17buffer_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
18 struct disassemble_info *info)
aa0aa4fa 19{
c6105c0a
FB
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. */
23 return EIO;
24 memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
25 return 0;
aa0aa4fa
FB
26}
27
c6105c0a
FB
28/* Get LENGTH bytes from info's buffer, at target address memaddr.
29 Transfer them to myaddr. */
30static int
c27004ec
FB
31target_read_memory (bfd_vma memaddr,
32 bfd_byte *myaddr,
33 int length,
34 struct disassemble_info *info)
c6105c0a
FB
35{
36 int i;
37 for(i = 0; i < length; i++) {
c27004ec 38 myaddr[i] = ldub_code(memaddr + i);
c6105c0a
FB
39 }
40 return 0;
41}
c6105c0a 42
aa0aa4fa
FB
43/* Print an error message. We can assume that this is in response to
44 an error return from buffer_read_memory. */
45void
3a742b76 46perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info)
aa0aa4fa
FB
47{
48 if (status != EIO)
49 /* Can't happen. */
50 (*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
51 else
52 /* Actually, address between memaddr and memaddr + len was
53 out of bounds. */
54 (*info->fprintf_func) (info->stream,
26a76461 55 "Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
aa0aa4fa
FB
56}
57
58/* This could be in a separate file, to save miniscule amounts of space
59 in statically linked executables. */
60
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
63 addresses). */
64
65void
3a742b76 66generic_print_address (bfd_vma addr, struct disassemble_info *info)
aa0aa4fa 67{
26a76461 68 (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
aa0aa4fa
FB
69}
70
71/* Just return the given address. */
72
73int
3a742b76 74generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info)
aa0aa4fa
FB
75{
76 return 1;
77}
78
79bfd_vma bfd_getl32 (const bfd_byte *addr)
80{
81 unsigned long v;
82
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;
87 return (bfd_vma) v;
88}
89
90bfd_vma bfd_getb32 (const bfd_byte *addr)
91{
92 unsigned long v;
93
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];
98 return (bfd_vma) v;
99}
100
6af0bf9c
FB
101bfd_vma bfd_getl16 (const bfd_byte *addr)
102{
103 unsigned long v;
104
105 v = (unsigned long) addr[0];
106 v |= (unsigned long) addr[1] << 8;
107 return (bfd_vma) v;
108}
109
110bfd_vma bfd_getb16 (const bfd_byte *addr)
111{
112 unsigned long v;
113
114 v = (unsigned long) addr[0] << 24;
115 v |= (unsigned long) addr[1] << 16;
116 return (bfd_vma) v;
117}
118
c2d551ff
FB
119#ifdef TARGET_ARM
120static int
121print_insn_thumb1(bfd_vma pc, disassemble_info *info)
122{
123 return print_insn_arm(pc | 1, info);
124}
125#endif
126
e91c8a77 127/* Disassemble this for me please... (debugging). 'flags' has the following
c2d551ff
FB
128 values:
129 i386 - nonzero means 16 bit code
5fafdf24 130 arm - nonzero means thumb code
6a00d601 131 ppc - nonzero means little endian
c2d551ff
FB
132 other targets - unused
133 */
83b34f8b 134void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
b9adb4a6 135{
c27004ec 136 target_ulong pc;
b9adb4a6
FB
137 int count;
138 struct disassemble_info disasm_info;
139 int (*print_insn)(bfd_vma pc, disassemble_info *info);
140
141 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
142
c27004ec
FB
143 disasm_info.read_memory_func = target_read_memory;
144 disasm_info.buffer_vma = code;
145 disasm_info.buffer_length = size;
146
147#ifdef TARGET_WORDS_BIGENDIAN
148 disasm_info.endian = BFD_ENDIAN_BIG;
149#else
150 disasm_info.endian = BFD_ENDIAN_LITTLE;
151#endif
152#if defined(TARGET_I386)
153 if (flags == 2)
154 disasm_info.mach = bfd_mach_x86_64;
5fafdf24 155 else if (flags == 1)
c27004ec
FB
156 disasm_info.mach = bfd_mach_i386_i8086;
157 else
158 disasm_info.mach = bfd_mach_i386_i386;
159 print_insn = print_insn_i386;
160#elif defined(TARGET_ARM)
c2d551ff
FB
161 if (flags)
162 print_insn = print_insn_thumb1;
163 else
164 print_insn = print_insn_arm;
c27004ec
FB
165#elif defined(TARGET_SPARC)
166 print_insn = print_insn_sparc;
3475187d
FB
167#ifdef TARGET_SPARC64
168 disasm_info.mach = bfd_mach_sparc_v9b;
3b46e624 169#endif
c27004ec 170#elif defined(TARGET_PPC)
237c0af0 171 if (flags >> 16)
111bfab3 172 disasm_info.endian = BFD_ENDIAN_LITTLE;
237c0af0
JM
173 if (flags & 0xFFFF) {
174 /* If we have a precise definitions of the instructions set, use it */
175 disasm_info.mach = flags & 0xFFFF;
176 } else {
a2458627 177#ifdef TARGET_PPC64
237c0af0 178 disasm_info.mach = bfd_mach_ppc64;
a2458627 179#else
237c0af0 180 disasm_info.mach = bfd_mach_ppc;
a2458627 181#endif
237c0af0 182 }
c27004ec 183 print_insn = print_insn_ppc;
e6e5906b
PB
184#elif defined(TARGET_M68K)
185 print_insn = print_insn_m68k;
6af0bf9c 186#elif defined(TARGET_MIPS)
76b3030c 187#ifdef TARGET_WORDS_BIGENDIAN
6af0bf9c 188 print_insn = print_insn_big_mips;
76b3030c
FB
189#else
190 print_insn = print_insn_little_mips;
191#endif
fdf9b3e8
FB
192#elif defined(TARGET_SH4)
193 disasm_info.mach = bfd_mach_sh4;
194 print_insn = print_insn_sh;
eddf68a6
JM
195#elif defined(TARGET_ALPHA)
196 disasm_info.mach = bfd_mach_alpha;
197 print_insn = print_insn_alpha;
a25fd137
TS
198#elif defined(TARGET_CRIS)
199 disasm_info.mach = bfd_mach_cris_v32;
200 print_insn = print_insn_crisv32;
c27004ec 201#else
b8076a74
FB
202 fprintf(out, "0x" TARGET_FMT_lx
203 ": Asm output not supported on this arch\n", code);
c27004ec 204 return;
c6105c0a
FB
205#endif
206
7e000c2e 207 for (pc = code; size > 0; pc += count, size -= count) {
fa15e030 208 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
c27004ec
FB
209 count = print_insn(pc, &disasm_info);
210#if 0
211 {
212 int i;
213 uint8_t b;
214 fprintf(out, " {");
215 for(i = 0; i < count; i++) {
216 target_read_memory(pc + i, &b, 1, &disasm_info);
217 fprintf(out, " %02x", b);
218 }
219 fprintf(out, " }");
220 }
221#endif
222 fprintf(out, "\n");
223 if (count < 0)
224 break;
225 }
226}
227
228/* Disassemble this for me please... (debugging). */
229void disas(FILE *out, void *code, unsigned long size)
230{
231 unsigned long pc;
232 int count;
233 struct disassemble_info disasm_info;
234 int (*print_insn)(bfd_vma pc, disassemble_info *info);
235
236 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
237
b9adb4a6
FB
238 disasm_info.buffer = code;
239 disasm_info.buffer_vma = (unsigned long)code;
240 disasm_info.buffer_length = size;
241
b9adb4a6 242#ifdef WORDS_BIGENDIAN
c27004ec 243 disasm_info.endian = BFD_ENDIAN_BIG;
b9adb4a6 244#else
c27004ec 245 disasm_info.endian = BFD_ENDIAN_LITTLE;
b9adb4a6 246#endif
bc51c5c9 247#if defined(__i386__)
c27004ec
FB
248 disasm_info.mach = bfd_mach_i386_i386;
249 print_insn = print_insn_i386;
bc51c5c9 250#elif defined(__x86_64__)
c27004ec
FB
251 disasm_info.mach = bfd_mach_x86_64;
252 print_insn = print_insn_i386;
e58ffeb3 253#elif defined(_ARCH_PPC)
c27004ec 254 print_insn = print_insn_ppc;
a993ba85 255#elif defined(__alpha__)
c27004ec 256 print_insn = print_insn_alpha;
aa0aa4fa 257#elif defined(__sparc__)
c27004ec 258 print_insn = print_insn_sparc;
6ecd4534
BS
259#if defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
260 disasm_info.mach = bfd_mach_sparc_v9b;
261#endif
5fafdf24 262#elif defined(__arm__)
c27004ec 263 print_insn = print_insn_arm;
6af0bf9c
FB
264#elif defined(__MIPSEB__)
265 print_insn = print_insn_big_mips;
266#elif defined(__MIPSEL__)
267 print_insn = print_insn_little_mips;
48024e4a
FB
268#elif defined(__m68k__)
269 print_insn = print_insn_m68k;
8f860bb8
TS
270#elif defined(__s390__)
271 print_insn = print_insn_s390;
f54b3f92
AJ
272#elif defined(__hppa__)
273 print_insn = print_insn_hppa;
b9adb4a6 274#else
b8076a74
FB
275 fprintf(out, "0x%lx: Asm output not supported on this arch\n",
276 (long) code);
c27004ec 277 return;
b9adb4a6 278#endif
7e000c2e 279 for (pc = (unsigned long)code; size > 0; pc += count, size -= count) {
c27004ec 280 fprintf(out, "0x%08lx: ", pc);
aa0aa4fa 281#ifdef __arm__
46152182 282 /* since data is included in the code, it is better to
aa0aa4fa 283 display code data too */
46152182 284 fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
aa0aa4fa 285#endif
c27004ec 286 count = print_insn(pc, &disasm_info);
b9adb4a6
FB
287 fprintf(out, "\n");
288 if (count < 0)
289 break;
290 }
291}
292
293/* Look up symbol for debugging purpose. Returns "" if unknown. */
c27004ec 294const char *lookup_symbol(target_ulong orig_addr)
b9adb4a6 295{
49918a75 296 const char *symbol = "";
e80cfcfc 297 struct syminfo *s;
3b46e624 298
e80cfcfc 299 for (s = syminfos; s; s = s->next) {
49918a75
PB
300 symbol = s->lookup_symbol(s, orig_addr);
301 if (symbol[0] != '\0') {
302 break;
303 }
b9adb4a6 304 }
49918a75
PB
305
306 return symbol;
b9adb4a6 307}
9307c4c1
FB
308
309#if !defined(CONFIG_USER_ONLY)
310
3d2cfdf1
FB
311void term_vprintf(const char *fmt, va_list ap);
312void term_printf(const char *fmt, ...);
313
9307c4c1 314static int monitor_disas_is_physical;
6a00d601 315static CPUState *monitor_disas_env;
9307c4c1
FB
316
317static int
a5f1b965
BS
318monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
319 struct disassemble_info *info)
9307c4c1
FB
320{
321 if (monitor_disas_is_physical) {
322 cpu_physical_memory_rw(memaddr, myaddr, length, 0);
323 } else {
6a00d601 324 cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
9307c4c1
FB
325 }
326 return 0;
327}
328
3d2cfdf1
FB
329static int monitor_fprintf(FILE *stream, const char *fmt, ...)
330{
331 va_list ap;
332 va_start(ap, fmt);
333 term_vprintf(fmt, ap);
334 va_end(ap);
335 return 0;
336}
337
6a00d601
FB
338void monitor_disas(CPUState *env,
339 target_ulong pc, int nb_insn, int is_physical, int flags)
9307c4c1 340{
9307c4c1
FB
341 int count, i;
342 struct disassemble_info disasm_info;
343 int (*print_insn)(bfd_vma pc, disassemble_info *info);
344
3d2cfdf1 345 INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf);
9307c4c1 346
6a00d601 347 monitor_disas_env = env;
9307c4c1
FB
348 monitor_disas_is_physical = is_physical;
349 disasm_info.read_memory_func = monitor_read_memory;
350
351 disasm_info.buffer_vma = pc;
352
353#ifdef TARGET_WORDS_BIGENDIAN
354 disasm_info.endian = BFD_ENDIAN_BIG;
355#else
356 disasm_info.endian = BFD_ENDIAN_LITTLE;
357#endif
358#if defined(TARGET_I386)
fa15e030
FB
359 if (flags == 2)
360 disasm_info.mach = bfd_mach_x86_64;
5fafdf24 361 else if (flags == 1)
9307c4c1 362 disasm_info.mach = bfd_mach_i386_i8086;
fa15e030
FB
363 else
364 disasm_info.mach = bfd_mach_i386_i386;
9307c4c1
FB
365 print_insn = print_insn_i386;
366#elif defined(TARGET_ARM)
367 print_insn = print_insn_arm;
cbd669da
TS
368#elif defined(TARGET_ALPHA)
369 print_insn = print_insn_alpha;
9307c4c1
FB
370#elif defined(TARGET_SPARC)
371 print_insn = print_insn_sparc;
682c4f15
BS
372#ifdef TARGET_SPARC64
373 disasm_info.mach = bfd_mach_sparc_v9b;
374#endif
9307c4c1 375#elif defined(TARGET_PPC)
a2458627
FB
376#ifdef TARGET_PPC64
377 disasm_info.mach = bfd_mach_ppc64;
378#else
379 disasm_info.mach = bfd_mach_ppc;
380#endif
9307c4c1 381 print_insn = print_insn_ppc;
e6e5906b
PB
382#elif defined(TARGET_M68K)
383 print_insn = print_insn_m68k;
6af0bf9c 384#elif defined(TARGET_MIPS)
76b3030c 385#ifdef TARGET_WORDS_BIGENDIAN
6af0bf9c 386 print_insn = print_insn_big_mips;
76b3030c
FB
387#else
388 print_insn = print_insn_little_mips;
389#endif
9307c4c1 390#else
b8076a74
FB
391 term_printf("0x" TARGET_FMT_lx
392 ": Asm output not supported on this arch\n", pc);
9307c4c1
FB
393 return;
394#endif
395
396 for(i = 0; i < nb_insn; i++) {
fa15e030 397 term_printf("0x" TARGET_FMT_lx ": ", pc);
9307c4c1 398 count = print_insn(pc, &disasm_info);
3d2cfdf1 399 term_printf("\n");
9307c4c1
FB
400 if (count < 0)
401 break;
402 pc += count;
403 }
404}
405#endif