| /* General "disassemble this chunk" code. Used for debugging. */ |
| #include "config.h" |
| #include "dis-asm.h" |
| #include "elf.h" |
| #include <errno.h> |
| |
| #include "cpu.h" |
| #include "exec-all.h" |
| #include "disas.h" |
| |
| /* Filled in by elfload.c. Simplistic, but will do for now. */ |
| struct syminfo *syminfos = NULL; |
| |
| /* Get LENGTH bytes from info's buffer, at target address memaddr. |
| Transfer them to myaddr. */ |
| int |
| buffer_read_memory (memaddr, myaddr, length, info) |
| bfd_vma memaddr; |
| bfd_byte *myaddr; |
| int length; |
| struct disassemble_info *info; |
| { |
| if (memaddr < info->buffer_vma |
| || memaddr + length > info->buffer_vma + info->buffer_length) |
| /* Out of bounds. Use EIO because GDB uses it. */ |
| return EIO; |
| memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length); |
| return 0; |
| } |
| |
| /* Get LENGTH bytes from info's buffer, at target address memaddr. |
| Transfer them to myaddr. */ |
| static int |
| target_read_memory (bfd_vma memaddr, |
| bfd_byte *myaddr, |
| int length, |
| struct disassemble_info *info) |
| { |
| int i; |
| for(i = 0; i < length; i++) { |
| myaddr[i] = ldub_code(memaddr + i); |
| } |
| return 0; |
| } |
| |
| /* Print an error message. We can assume that this is in response to |
| an error return from buffer_read_memory. */ |
| void |
| perror_memory (status, memaddr, info) |
| int status; |
| bfd_vma memaddr; |
| struct disassemble_info *info; |
| { |
| if (status != EIO) |
| /* Can't happen. */ |
| (*info->fprintf_func) (info->stream, "Unknown error %d\n", status); |
| else |
| /* Actually, address between memaddr and memaddr + len was |
| out of bounds. */ |
| (*info->fprintf_func) (info->stream, |
| "Address 0x%" PRIx64 " is out of bounds.\n", memaddr); |
| } |
| |
| /* This could be in a separate file, to save miniscule amounts of space |
| in statically linked executables. */ |
| |
| /* Just print the address is hex. This is included for completeness even |
| though both GDB and objdump provide their own (to print symbolic |
| addresses). */ |
| |
| void |
| generic_print_address (addr, info) |
| bfd_vma addr; |
| struct disassemble_info *info; |
| { |
| (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr); |
| } |
| |
| /* Just return the given address. */ |
| |
| int |
| generic_symbol_at_address (addr, info) |
| bfd_vma addr; |
| struct disassemble_info * info; |
| { |
| return 1; |
| } |
| |
| bfd_vma bfd_getl32 (const bfd_byte *addr) |
| { |
| unsigned long v; |
| |
| v = (unsigned long) addr[0]; |
| v |= (unsigned long) addr[1] << 8; |
| v |= (unsigned long) addr[2] << 16; |
| v |= (unsigned long) addr[3] << 24; |
| return (bfd_vma) v; |
| } |
| |
| bfd_vma bfd_getb32 (const bfd_byte *addr) |
| { |
| unsigned long v; |
| |
| v = (unsigned long) addr[0] << 24; |
| v |= (unsigned long) addr[1] << 16; |
| v |= (unsigned long) addr[2] << 8; |
| v |= (unsigned long) addr[3]; |
| return (bfd_vma) v; |
| } |
| |
| bfd_vma bfd_getl16 (const bfd_byte *addr) |
| { |
| unsigned long v; |
| |
| v = (unsigned long) addr[0]; |
| v |= (unsigned long) addr[1] << 8; |
| return (bfd_vma) v; |
| } |
| |
| bfd_vma bfd_getb16 (const bfd_byte *addr) |
| { |
| unsigned long v; |
| |
| v = (unsigned long) addr[0] << 24; |
| v |= (unsigned long) addr[1] << 16; |
| return (bfd_vma) v; |
| } |
| |
| #ifdef TARGET_ARM |
| static int |
| print_insn_thumb1(bfd_vma pc, disassemble_info *info) |
| { |
| return print_insn_arm(pc | 1, info); |
| } |
| #endif |
| |
| /* Disassemble this for me please... (debugging). 'flags' has the following |
| values: |
| i386 - nonzero means 16 bit code |
| arm - nonzero means thumb code |
| ppc - nonzero means little endian |
| other targets - unused |
| */ |
| void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) |
| { |
| target_ulong pc; |
| int count; |
| struct disassemble_info disasm_info; |
| int (*print_insn)(bfd_vma pc, disassemble_info *info); |
| |
| INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf); |
| |
| disasm_info.read_memory_func = target_read_memory; |
| disasm_info.buffer_vma = code; |
| disasm_info.buffer_length = size; |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| disasm_info.endian = BFD_ENDIAN_BIG; |
| #else |
| disasm_info.endian = BFD_ENDIAN_LITTLE; |
| #endif |
| #if defined(TARGET_I386) |
| if (flags == 2) |
| disasm_info.mach = bfd_mach_x86_64; |
| else if (flags == 1) |
| disasm_info.mach = bfd_mach_i386_i8086; |
| else |
| disasm_info.mach = bfd_mach_i386_i386; |
| print_insn = print_insn_i386; |
| #elif defined(TARGET_ARM) |
| if (flags) |
| print_insn = print_insn_thumb1; |
| else |
| print_insn = print_insn_arm; |
| #elif defined(TARGET_SPARC) |
| print_insn = print_insn_sparc; |
| #ifdef TARGET_SPARC64 |
| disasm_info.mach = bfd_mach_sparc_v9b; |
| #endif |
| #elif defined(TARGET_PPC) |
| if (flags) |
| disasm_info.endian = BFD_ENDIAN_LITTLE; |
| #ifdef TARGET_PPC64 |
| disasm_info.mach = bfd_mach_ppc64; |
| #else |
| disasm_info.mach = bfd_mach_ppc; |
| #endif |
| print_insn = print_insn_ppc; |
| #elif defined(TARGET_M68K) |
| print_insn = print_insn_m68k; |
| #elif defined(TARGET_MIPS) |
| #ifdef TARGET_WORDS_BIGENDIAN |
| print_insn = print_insn_big_mips; |
| #else |
| print_insn = print_insn_little_mips; |
| #endif |
| #elif defined(TARGET_SH4) |
| disasm_info.mach = bfd_mach_sh4; |
| print_insn = print_insn_sh; |
| #elif defined(TARGET_ALPHA) |
| disasm_info.mach = bfd_mach_alpha; |
| print_insn = print_insn_alpha; |
| #else |
| fprintf(out, "0x" TARGET_FMT_lx |
| ": Asm output not supported on this arch\n", code); |
| return; |
| #endif |
| |
| for (pc = code; pc < code + size; pc += count) { |
| fprintf(out, "0x" TARGET_FMT_lx ": ", pc); |
| count = print_insn(pc, &disasm_info); |
| #if 0 |
| { |
| int i; |
| uint8_t b; |
| fprintf(out, " {"); |
| for(i = 0; i < count; i++) { |
| target_read_memory(pc + i, &b, 1, &disasm_info); |
| fprintf(out, " %02x", b); |
| } |
| fprintf(out, " }"); |
| } |
| #endif |
| fprintf(out, "\n"); |
| if (count < 0) |
| break; |
| } |
| } |
| |
| /* Disassemble this for me please... (debugging). */ |
| void disas(FILE *out, void *code, unsigned long size) |
| { |
| unsigned long pc; |
| int count; |
| struct disassemble_info disasm_info; |
| int (*print_insn)(bfd_vma pc, disassemble_info *info); |
| |
| INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf); |
| |
| disasm_info.buffer = code; |
| disasm_info.buffer_vma = (unsigned long)code; |
| disasm_info.buffer_length = size; |
| |
| #ifdef WORDS_BIGENDIAN |
| disasm_info.endian = BFD_ENDIAN_BIG; |
| #else |
| disasm_info.endian = BFD_ENDIAN_LITTLE; |
| #endif |
| #if defined(__i386__) |
| disasm_info.mach = bfd_mach_i386_i386; |
| print_insn = print_insn_i386; |
| #elif defined(__x86_64__) |
| disasm_info.mach = bfd_mach_x86_64; |
| print_insn = print_insn_i386; |
| #elif defined(__powerpc__) |
| print_insn = print_insn_ppc; |
| #elif defined(__alpha__) |
| print_insn = print_insn_alpha; |
| #elif defined(__sparc__) |
| print_insn = print_insn_sparc; |
| #if defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__) |
| disasm_info.mach = bfd_mach_sparc_v9b; |
| #endif |
| #elif defined(__arm__) |
| print_insn = print_insn_arm; |
| #elif defined(__MIPSEB__) |
| print_insn = print_insn_big_mips; |
| #elif defined(__MIPSEL__) |
| print_insn = print_insn_little_mips; |
| #elif defined(__m68k__) |
| print_insn = print_insn_m68k; |
| #elif defined(__s390__) |
| print_insn = print_insn_s390; |
| #else |
| fprintf(out, "0x%lx: Asm output not supported on this arch\n", |
| (long) code); |
| return; |
| #endif |
| for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) { |
| fprintf(out, "0x%08lx: ", pc); |
| #ifdef __arm__ |
| /* since data is included in the code, it is better to |
| display code data too */ |
| fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc)); |
| #endif |
| count = print_insn(pc, &disasm_info); |
| fprintf(out, "\n"); |
| if (count < 0) |
| break; |
| } |
| } |
| |
| /* Look up symbol for debugging purpose. Returns "" if unknown. */ |
| const char *lookup_symbol(target_ulong orig_addr) |
| { |
| unsigned int i; |
| /* Hack, because we know this is x86. */ |
| Elf32_Sym *sym; |
| struct syminfo *s; |
| target_ulong addr; |
| |
| for (s = syminfos; s; s = s->next) { |
| sym = s->disas_symtab; |
| for (i = 0; i < s->disas_num_syms; i++) { |
| if (sym[i].st_shndx == SHN_UNDEF |
| || sym[i].st_shndx >= SHN_LORESERVE) |
| continue; |
| |
| if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC) |
| continue; |
| |
| addr = sym[i].st_value; |
| #if defined(TARGET_ARM) || defined (TARGET_MIPS) |
| /* The bottom address bit marks a Thumb or MIPS16 symbol. */ |
| addr &= ~(target_ulong)1; |
| #endif |
| if (orig_addr >= addr |
| && orig_addr < addr + sym[i].st_size) |
| return s->disas_strtab + sym[i].st_name; |
| } |
| } |
| return ""; |
| } |
| |
| #if !defined(CONFIG_USER_ONLY) |
| |
| void term_vprintf(const char *fmt, va_list ap); |
| void term_printf(const char *fmt, ...); |
| |
| static int monitor_disas_is_physical; |
| static CPUState *monitor_disas_env; |
| |
| static int |
| monitor_read_memory (memaddr, myaddr, length, info) |
| bfd_vma memaddr; |
| bfd_byte *myaddr; |
| int length; |
| struct disassemble_info *info; |
| { |
| if (monitor_disas_is_physical) { |
| cpu_physical_memory_rw(memaddr, myaddr, length, 0); |
| } else { |
| cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0); |
| } |
| return 0; |
| } |
| |
| static int monitor_fprintf(FILE *stream, const char *fmt, ...) |
| { |
| va_list ap; |
| va_start(ap, fmt); |
| term_vprintf(fmt, ap); |
| va_end(ap); |
| return 0; |
| } |
| |
| void monitor_disas(CPUState *env, |
| target_ulong pc, int nb_insn, int is_physical, int flags) |
| { |
| int count, i; |
| struct disassemble_info disasm_info; |
| int (*print_insn)(bfd_vma pc, disassemble_info *info); |
| |
| INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf); |
| |
| monitor_disas_env = env; |
| monitor_disas_is_physical = is_physical; |
| disasm_info.read_memory_func = monitor_read_memory; |
| |
| disasm_info.buffer_vma = pc; |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| disasm_info.endian = BFD_ENDIAN_BIG; |
| #else |
| disasm_info.endian = BFD_ENDIAN_LITTLE; |
| #endif |
| #if defined(TARGET_I386) |
| if (flags == 2) |
| disasm_info.mach = bfd_mach_x86_64; |
| else if (flags == 1) |
| disasm_info.mach = bfd_mach_i386_i8086; |
| else |
| disasm_info.mach = bfd_mach_i386_i386; |
| print_insn = print_insn_i386; |
| #elif defined(TARGET_ARM) |
| print_insn = print_insn_arm; |
| #elif defined(TARGET_SPARC) |
| print_insn = print_insn_sparc; |
| #ifdef TARGET_SPARC64 |
| disasm_info.mach = bfd_mach_sparc_v9b; |
| #endif |
| #elif defined(TARGET_PPC) |
| #ifdef TARGET_PPC64 |
| disasm_info.mach = bfd_mach_ppc64; |
| #else |
| disasm_info.mach = bfd_mach_ppc; |
| #endif |
| print_insn = print_insn_ppc; |
| #elif defined(TARGET_M68K) |
| print_insn = print_insn_m68k; |
| #elif defined(TARGET_MIPS) |
| #ifdef TARGET_WORDS_BIGENDIAN |
| print_insn = print_insn_big_mips; |
| #else |
| print_insn = print_insn_little_mips; |
| #endif |
| #else |
| term_printf("0x" TARGET_FMT_lx |
| ": Asm output not supported on this arch\n", pc); |
| return; |
| #endif |
| |
| for(i = 0; i < nb_insn; i++) { |
| term_printf("0x" TARGET_FMT_lx ": ", pc); |
| count = print_insn(pc, &disasm_info); |
| term_printf("\n"); |
| if (count < 0) |
| break; |
| pc += count; |
| } |
| } |
| #endif |
