ia64/xen-unstable

view tools/ioemu/disas.c @ 15841:c5f735271e22

[IA64] Foreign p2m: Fix vti domain builder.

It should set arch_domain::convmem_end.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Alex Williamson <alex.williamson@hp.com>
date Thu Sep 06 13:48:43 2007 -0600 (2007-09-06)
parents 00618037d37d
children
line source
1 /* General "disassemble this chunk" code. Used for debugging. */
2 #include "config.h"
3 #include "dis-asm.h"
4 #include "elf.h"
5 #include <errno.h>
7 #include "cpu.h"
8 #include "exec-all.h"
9 #include "disas.h"
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. */
16 int
17 buffer_read_memory (memaddr, myaddr, length, info)
18 bfd_vma memaddr;
19 bfd_byte *myaddr;
20 int length;
21 struct disassemble_info *info;
22 {
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. */
26 return EIO;
27 memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
28 return 0;
29 }
31 /* Get LENGTH bytes from info's buffer, at target address memaddr.
32 Transfer them to myaddr. */
33 static int
34 target_read_memory (bfd_vma memaddr,
35 bfd_byte *myaddr,
36 int length,
37 struct disassemble_info *info)
38 {
39 int i;
40 for(i = 0; i < length; i++) {
41 myaddr[i] = ldub_code(memaddr + i);
42 }
43 return 0;
44 }
46 /* Print an error message. We can assume that this is in response to
47 an error return from buffer_read_memory. */
48 void
49 perror_memory (status, memaddr, info)
50 int status;
51 bfd_vma memaddr;
52 struct disassemble_info *info;
53 {
54 if (status != EIO)
55 /* Can't happen. */
56 (*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
57 else
58 /* Actually, address between memaddr and memaddr + len was
59 out of bounds. */
60 (*info->fprintf_func) (info->stream,
61 "Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
62 }
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
69 addresses). */
71 void
72 generic_print_address (addr, info)
73 bfd_vma addr;
74 struct disassemble_info *info;
75 {
76 (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
77 }
79 /* Just return the given address. */
81 int
82 generic_symbol_at_address (addr, info)
83 bfd_vma addr;
84 struct disassemble_info * info;
85 {
86 return 1;
87 }
89 bfd_vma bfd_getl32 (const bfd_byte *addr)
90 {
91 unsigned long v;
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;
97 return (bfd_vma) v;
98 }
100 bfd_vma bfd_getb32 (const bfd_byte *addr)
101 {
102 unsigned long v;
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];
108 return (bfd_vma) v;
109 }
111 bfd_vma bfd_getl16 (const bfd_byte *addr)
112 {
113 unsigned long v;
115 v = (unsigned long) addr[0];
116 v |= (unsigned long) addr[1] << 8;
117 return (bfd_vma) v;
118 }
120 bfd_vma bfd_getb16 (const bfd_byte *addr)
121 {
122 unsigned long v;
124 v = (unsigned long) addr[0] << 24;
125 v |= (unsigned long) addr[1] << 16;
126 return (bfd_vma) v;
127 }
129 #ifdef TARGET_ARM
130 static int
131 print_insn_thumb1(bfd_vma pc, disassemble_info *info)
132 {
133 return print_insn_arm(pc | 1, info);
134 }
135 #endif
137 /* Disassemble this for me please... (debugging). 'flags' has teh following
138 values:
139 i386 - nonzero means 16 bit code
140 arm - nonzero means thumb code
141 ppc - nonzero means little endian
142 other targets - unused
143 */
144 void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
145 {
146 target_ulong pc;
147 int count;
148 struct disassemble_info disasm_info;
149 int (*print_insn)(bfd_vma pc, disassemble_info *info);
151 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
153 disasm_info.read_memory_func = target_read_memory;
154 disasm_info.buffer_vma = code;
155 disasm_info.buffer_length = size;
157 #ifdef TARGET_WORDS_BIGENDIAN
158 disasm_info.endian = BFD_ENDIAN_BIG;
159 #else
160 disasm_info.endian = BFD_ENDIAN_LITTLE;
161 #endif
162 #if defined(TARGET_I386)
163 if (flags == 2)
164 disasm_info.mach = bfd_mach_x86_64;
165 else if (flags == 1)
166 disasm_info.mach = bfd_mach_i386_i8086;
167 else
168 disasm_info.mach = bfd_mach_i386_i386;
169 print_insn = print_insn_i386;
170 #elif defined(TARGET_ARM)
171 if (flags)
172 print_insn = print_insn_thumb1;
173 else
174 print_insn = print_insn_arm;
175 #elif defined(TARGET_SPARC)
176 print_insn = print_insn_sparc;
177 #ifdef TARGET_SPARC64
178 disasm_info.mach = bfd_mach_sparc_v9b;
179 #endif
180 #elif defined(TARGET_PPC)
181 if (flags)
182 disasm_info.endian = BFD_ENDIAN_LITTLE;
183 #ifdef TARGET_PPC64
184 disasm_info.mach = bfd_mach_ppc64;
185 #else
186 disasm_info.mach = bfd_mach_ppc;
187 #endif
188 print_insn = print_insn_ppc;
189 #elif defined(TARGET_M68K)
190 print_insn = print_insn_m68k;
191 #elif defined(TARGET_MIPS)
192 #ifdef TARGET_WORDS_BIGENDIAN
193 print_insn = print_insn_big_mips;
194 #else
195 print_insn = print_insn_little_mips;
196 #endif
197 #elif defined(TARGET_SH4)
198 disasm_info.mach = bfd_mach_sh4;
199 print_insn = print_insn_sh;
200 #else
201 fprintf(out, "0x" TARGET_FMT_lx
202 ": Asm output not supported on this arch\n", code);
203 return;
204 #endif
206 for (pc = code; pc < code + size; pc += count) {
207 fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
208 count = print_insn(pc, &disasm_info);
209 #if 0
210 {
211 int i;
212 uint8_t b;
213 fprintf(out, " {");
214 for(i = 0; i < count; i++) {
215 target_read_memory(pc + i, &b, 1, &disasm_info);
216 fprintf(out, " %02x", b);
217 }
218 fprintf(out, " }");
219 }
220 #endif
221 fprintf(out, "\n");
222 if (count < 0)
223 break;
224 }
225 }
227 /* Disassemble this for me please... (debugging). */
228 void disas(FILE *out, void *code, unsigned long size)
229 {
230 unsigned long pc;
231 int count;
232 struct disassemble_info disasm_info;
233 int (*print_insn)(bfd_vma pc, disassemble_info *info);
235 INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
237 disasm_info.buffer = code;
238 disasm_info.buffer_vma = (unsigned long)code;
239 disasm_info.buffer_length = size;
241 #ifdef WORDS_BIGENDIAN
242 disasm_info.endian = BFD_ENDIAN_BIG;
243 #else
244 disasm_info.endian = BFD_ENDIAN_LITTLE;
245 #endif
246 #if defined(__i386__)
247 disasm_info.mach = bfd_mach_i386_i386;
248 print_insn = print_insn_i386;
249 #elif defined(__x86_64__)
250 disasm_info.mach = bfd_mach_x86_64;
251 print_insn = print_insn_i386;
252 #elif defined(__powerpc__)
253 print_insn = print_insn_ppc;
254 #elif defined(__alpha__)
255 print_insn = print_insn_alpha;
256 #elif defined(__sparc__)
257 print_insn = print_insn_sparc;
258 #elif defined(__arm__)
259 print_insn = print_insn_arm;
260 #elif defined(__MIPSEB__)
261 print_insn = print_insn_big_mips;
262 #elif defined(__MIPSEL__)
263 print_insn = print_insn_little_mips;
264 #elif defined(__m68k__)
265 print_insn = print_insn_m68k;
266 #else
267 fprintf(out, "0x%lx: Asm output not supported on this arch\n",
268 (long) code);
269 return;
270 #endif
271 for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) {
272 fprintf(out, "0x%08lx: ", pc);
273 #ifdef __arm__
274 /* since data is included in the code, it is better to
275 display code data too */
276 fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
277 #endif
278 count = print_insn(pc, &disasm_info);
279 fprintf(out, "\n");
280 if (count < 0)
281 break;
282 }
283 }
285 /* Look up symbol for debugging purpose. Returns "" if unknown. */
286 const char *lookup_symbol(target_ulong orig_addr)
287 {
288 unsigned int i;
289 /* Hack, because we know this is x86. */
290 Elf32_Sym *sym;
291 struct syminfo *s;
292 target_ulong addr;
294 for (s = syminfos; s; s = s->next) {
295 sym = s->disas_symtab;
296 for (i = 0; i < s->disas_num_syms; i++) {
297 if (sym[i].st_shndx == SHN_UNDEF
298 || sym[i].st_shndx >= SHN_LORESERVE)
299 continue;
301 if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
302 continue;
304 addr = sym[i].st_value;
305 #ifdef TARGET_ARM
306 /* The bottom address bit marks a Thumb symbol. */
307 addr &= ~(target_ulong)1;
308 #endif
309 if (orig_addr >= addr
310 && orig_addr < addr + sym[i].st_size)
311 return s->disas_strtab + sym[i].st_name;
312 }
313 }
314 return "";
315 }
317 #if !defined(CONFIG_USER_ONLY)
319 void term_vprintf(const char *fmt, va_list ap);
320 void term_printf(const char *fmt, ...);
322 static int monitor_disas_is_physical;
323 static CPUState *monitor_disas_env;
325 static int
326 monitor_read_memory (memaddr, myaddr, length, info)
327 bfd_vma memaddr;
328 bfd_byte *myaddr;
329 int length;
330 struct disassemble_info *info;
331 {
332 if (monitor_disas_is_physical) {
333 cpu_physical_memory_rw(memaddr, myaddr, length, 0);
334 } else {
335 cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
336 }
337 return 0;
338 }
340 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
341 {
342 va_list ap;
343 va_start(ap, fmt);
344 term_vprintf(fmt, ap);
345 va_end(ap);
346 return 0;
347 }
349 void monitor_disas(CPUState *env,
350 target_ulong pc, int nb_insn, int is_physical, int flags)
351 {
352 int count, i;
353 struct disassemble_info disasm_info;
354 int (*print_insn)(bfd_vma pc, disassemble_info *info);
356 INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf);
358 monitor_disas_env = env;
359 monitor_disas_is_physical = is_physical;
360 disasm_info.read_memory_func = monitor_read_memory;
362 disasm_info.buffer_vma = pc;
364 #ifdef TARGET_WORDS_BIGENDIAN
365 disasm_info.endian = BFD_ENDIAN_BIG;
366 #else
367 disasm_info.endian = BFD_ENDIAN_LITTLE;
368 #endif
369 #if defined(TARGET_I386)
370 if (flags == 2)
371 disasm_info.mach = bfd_mach_x86_64;
372 else if (flags == 1)
373 disasm_info.mach = bfd_mach_i386_i8086;
374 else
375 disasm_info.mach = bfd_mach_i386_i386;
376 print_insn = print_insn_i386;
377 #elif defined(TARGET_ARM)
378 print_insn = print_insn_arm;
379 #elif defined(TARGET_SPARC)
380 print_insn = print_insn_sparc;
381 #elif defined(TARGET_PPC)
382 #ifdef TARGET_PPC64
383 disasm_info.mach = bfd_mach_ppc64;
384 #else
385 disasm_info.mach = bfd_mach_ppc;
386 #endif
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;
393 #else
394 print_insn = print_insn_little_mips;
395 #endif
396 #else
397 term_printf("0x" TARGET_FMT_lx
398 ": Asm output not supported on this arch\n", pc);
399 return;
400 #endif
402 for(i = 0; i < nb_insn; i++) {
403 term_printf("0x" TARGET_FMT_lx ": ", pc);
404 count = print_insn(pc, &disasm_info);
405 term_printf("\n");
406 if (count < 0)
407 break;
408 pc += count;
409 }
410 }
411 #endif