X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/e80cfcfc8884400e826328b772971913a14d0f44..ae0f5e9ea80de923ae1c11289cf6ac468f657880:/disas.c?ds=sidebyside diff --git a/disas.c b/disas.c index bfab8c3bb7..4945c44b9f 100644 --- a/disas.c +++ b/disas.c @@ -5,7 +5,6 @@ #include #include "cpu.h" -#include "exec-all.h" #include "disas.h" /* Filled in by elfload.c. Simplistic, but will do for now. */ @@ -14,11 +13,8 @@ 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; +buffer_read_memory(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) @@ -28,31 +24,22 @@ buffer_read_memory (memaddr, myaddr, length, info) return 0; } -#if !defined(CONFIG_USER_ONLY) /* Get LENGTH bytes from info's buffer, at target address memaddr. Transfer them to myaddr. */ static int -target_read_memory (memaddr, myaddr, length, info) - bfd_vma memaddr; - bfd_byte *myaddr; - int length; - struct disassemble_info *info; +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((void *)((long)memaddr + i)); - } + cpu_memory_rw_debug(cpu_single_env, memaddr, myaddr, length, 0); return 0; } -#endif /* 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; +perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info) { if (status != EIO) /* Can't happen. */ @@ -61,7 +48,7 @@ perror_memory (status, memaddr, info) /* Actually, address between memaddr and memaddr + len was out of bounds. */ (*info->fprintf_func) (info->stream, - "Address 0x%llx is out of bounds.\n", memaddr); + "Address 0x%" PRIx64 " is out of bounds.\n", memaddr); } /* This could be in a separate file, to save miniscule amounts of space @@ -72,23 +59,34 @@ perror_memory (status, memaddr, info) addresses). */ void -generic_print_address (addr, info) - bfd_vma addr; - struct disassemble_info *info; +generic_print_address (bfd_vma addr, struct disassemble_info *info) { - (*info->fprintf_func) (info->stream, "0x%llx", addr); + (*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; +generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info) { return 1; } +bfd_vma bfd_getl64 (const bfd_byte *addr) +{ + unsigned long long v; + + v = (unsigned long long) addr[0]; + v |= (unsigned long long) addr[1] << 8; + v |= (unsigned long long) addr[2] << 16; + v |= (unsigned long long) addr[3] << 24; + v |= (unsigned long long) addr[4] << 32; + v |= (unsigned long long) addr[5] << 40; + v |= (unsigned long long) addr[6] << 48; + v |= (unsigned long long) addr[7] << 56; + return (bfd_vma) v; +} + bfd_vma bfd_getl32 (const bfd_byte *addr) { unsigned long v; @@ -111,85 +109,209 @@ bfd_vma bfd_getb32 (const bfd_byte *addr) return (bfd_vma) v; } -/* Disassemble this for me please... (debugging). 'flags' is only used - for i386: non zero means 16 bit code */ -void disas(FILE *out, void *code, unsigned long size, int is_host, int flags) +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 - 1 means 16 bit code, 2 means 64 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) { - uint8_t *pc; + 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); -#if !defined(CONFIG_USER_ONLY) - if (!is_host) { - disasm_info.read_memory_func = target_read_memory; - } -#endif - - disasm_info.buffer = code; - disasm_info.buffer_vma = (unsigned long)code; + disasm_info.read_memory_func = target_read_memory; + disasm_info.buffer_vma = code; disasm_info.buffer_length = size; - if (is_host) { -#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; -#elif defined(__arm__) - print_insn = print_insn_arm; -#else - fprintf(out, "Asm output not supported on this arch\n"); - return; -#endif - } else { #ifdef TARGET_WORDS_BIGENDIAN - disasm_info.endian = BFD_ENDIAN_BIG; + disasm_info.endian = BFD_ENDIAN_BIG; #else - disasm_info.endian = BFD_ENDIAN_LITTLE; + disasm_info.endian = BFD_ENDIAN_LITTLE; #endif #if defined(TARGET_I386) - if (!flags) - disasm_info.mach = bfd_mach_i386_i386; - else - disasm_info.mach = bfd_mach_i386_i8086; - print_insn = print_insn_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; + print_insn = print_insn_sparc; +#ifdef TARGET_SPARC64 + disasm_info.mach = bfd_mach_sparc_v9b; +#endif #elif defined(TARGET_PPC) - print_insn = print_insn_ppc; + if (flags >> 16) + disasm_info.endian = BFD_ENDIAN_LITTLE; + if (flags & 0xFFFF) { + /* If we have a precise definitions of the instructions set, use it */ + disasm_info.mach = flags & 0xFFFF; + } else { +#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 - fprintf(out, "Asm output not supported on this arch\n"); - return; + 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_ev6; + print_insn = print_insn_alpha; +#elif defined(TARGET_CRIS) + if (flags != 32) { + disasm_info.mach = bfd_mach_cris_v0_v10; + print_insn = print_insn_crisv10; + } else { + disasm_info.mach = bfd_mach_cris_v32; + print_insn = print_insn_crisv32; } +#elif defined(TARGET_S390X) + disasm_info.mach = bfd_mach_s390_64; + print_insn = print_insn_s390; +#elif defined(TARGET_MICROBLAZE) + disasm_info.mach = bfd_arch_microblaze; + print_insn = print_insn_microblaze; +#else + fprintf(out, "0x" TARGET_FMT_lx + ": Asm output not supported on this arch\n", code); + return; +#endif - for (pc = code; pc < (uint8_t *)code + size; pc += count) { - fprintf(out, "0x%08lx: ", (long)pc); -#ifdef __arm__ - /* since data are included in the code, it is better to - display code data too */ - if (is_host) { - fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc)); + for (pc = code; size > 0; pc += count, size -= 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 - count = print_insn((unsigned long)pc, &disasm_info); + fprintf(out, "\n"); + if (count < 0) + break; + if (size < count) { + fprintf(out, + "Disassembler disagrees with translator over instruction " + "decoding\n" + "Please report this to qemu-devel@nongnu.org\n"); + 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 HOST_WORDS_BIGENDIAN + disasm_info.endian = BFD_ENDIAN_BIG; +#else + disasm_info.endian = BFD_ENDIAN_LITTLE; +#endif +#if defined(CONFIG_TCG_INTERPRETER) + print_insn = print_insn_tci; +#elif 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(_ARCH_PPC) + 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; +#elif defined(__hppa__) + print_insn = print_insn_hppa; +#elif defined(__ia64__) + print_insn = print_insn_ia64; +#else + fprintf(out, "0x%lx: Asm output not supported on this arch\n", + (long) code); + return; +#endif + for (pc = (unsigned long)code; size > 0; pc += count, size -= count) { + fprintf(out, "0x%08lx: ", pc); + count = print_insn(pc, &disasm_info); fprintf(out, "\n"); if (count < 0) break; @@ -197,70 +319,60 @@ void disas(FILE *out, void *code, unsigned long size, int is_host, int flags) } /* Look up symbol for debugging purpose. Returns "" if unknown. */ -const char *lookup_symbol(void *orig_addr) +const char *lookup_symbol(target_ulong orig_addr) { - unsigned int i; - /* Hack, because we know this is x86. */ - Elf32_Sym *sym; + const char *symbol = ""; struct syminfo *s; - + 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; - - if ((long)orig_addr >= sym[i].st_value - && (long)orig_addr < sym[i].st_value + sym[i].st_size) - return s->disas_strtab + sym[i].st_name; - } + symbol = s->lookup_symbol(s, orig_addr); + if (symbol[0] != '\0') { + break; + } } - return ""; + + return symbol; } #if !defined(CONFIG_USER_ONLY) -void term_vprintf(const char *fmt, va_list ap); -void term_printf(const char *fmt, ...); +#include "monitor.h" static int monitor_disas_is_physical; +static CPUArchState *monitor_disas_env; static int -monitor_read_memory (memaddr, myaddr, length, info) - bfd_vma memaddr; - bfd_byte *myaddr; - int length; - struct disassemble_info *info; +monitor_read_memory (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); + cpu_physical_memory_read(memaddr, myaddr, length); } else { - cpu_memory_rw_debug(cpu_single_env, memaddr,myaddr, length, 0); + cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0); } return 0; } -static int monitor_fprintf(FILE *stream, const char *fmt, ...) +static int GCC_FMT_ATTR(2, 3) +monitor_fprintf(FILE *stream, const char *fmt, ...) { va_list ap; va_start(ap, fmt); - term_vprintf(fmt, ap); + monitor_vprintf((Monitor *)stream, fmt, ap); va_end(ap); return 0; } -void monitor_disas(target_ulong pc, int nb_insn, int is_physical, int flags) +void monitor_disas(Monitor *mon, CPUArchState *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); + INIT_DISASSEMBLE_INFO(disasm_info, (FILE *)mon, monitor_fprintf); + monitor_disas_env = env; monitor_disas_is_physical = is_physical; disasm_info.read_memory_func = monitor_read_memory; @@ -272,26 +384,53 @@ void monitor_disas(target_ulong pc, int nb_insn, int is_physical, int flags) disasm_info.endian = BFD_ENDIAN_LITTLE; #endif #if defined(TARGET_I386) - if (!flags) - disasm_info.mach = bfd_mach_i386_i386; - else + 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_ALPHA) + print_insn = print_insn_alpha; #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 +#elif defined(TARGET_SH4) + disasm_info.mach = bfd_mach_sh4; + print_insn = print_insn_sh; +#elif defined(TARGET_S390X) + disasm_info.mach = bfd_mach_s390_64; + print_insn = print_insn_s390; #else - term_printf("Asm output not supported on this arch\n"); + monitor_printf(mon, "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%08lx: ", (unsigned long)pc); + monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc); count = print_insn(pc, &disasm_info); - term_printf("\n"); + monitor_printf(mon, "\n"); if (count < 0) break; pc += count;