X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/5fafdf24ef2c090c164d4dc89684b3f379dbdd87..2d746989bf5e146df9205de3fd4ad0d48a318165:/disas.c?ds=sidebyside diff --git a/disas.c b/disas.c index 5048150b18..b801c8f51d 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) @@ -36,20 +32,14 @@ target_read_memory (bfd_vma memaddr, int length, struct disassemble_info *info) { - int i; - for(i = 0; i < length; i++) { - myaddr[i] = ldub_code(memaddr + i); - } + cpu_memory_rw_debug(cpu_single_env, memaddr, myaddr, length, 0); 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; +perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info) { if (status != EIO) /* Can't happen. */ @@ -61,7 +51,7 @@ perror_memory (status, memaddr, info) "Address 0x%" PRIx64 " is out of bounds.\n", memaddr); } -/* This could be in a separate file, to save miniscule amounts of space +/* This could be in a separate file, to save minuscule amounts of space in statically linked executables. */ /* Just print the address is hex. This is included for completeness even @@ -69,23 +59,50 @@ 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%" PRIx64, addr); } +/* Print address in hex, truncated to the width of a target virtual address. */ +static void +generic_print_target_address(bfd_vma addr, struct disassemble_info *info) +{ + uint64_t mask = ~0ULL >> (64 - TARGET_VIRT_ADDR_SPACE_BITS); + generic_print_address(addr & mask, info); +} + +/* Print address in hex, truncated to the width of a host virtual address. */ +static void +generic_print_host_address(bfd_vma addr, struct disassemble_info *info) +{ + uint64_t mask = ~0ULL >> (64 - (sizeof(void *) * 8)); + generic_print_address(addr & mask, info); +} + /* 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; @@ -136,8 +153,8 @@ print_insn_thumb1(bfd_vma pc, disassemble_info *info) /* Disassemble this for me please... (debugging). 'flags' has the following values: - i386 - nonzero means 16 bit code - arm - nonzero means thumb code + i386 - 1 means 16 bit code, 2 means 64 bit code + arm - bit 0 = thumb, bit 1 = reverse endian ppc - nonzero means little endian other targets - unused */ @@ -153,6 +170,7 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) disasm_info.read_memory_func = target_read_memory; disasm_info.buffer_vma = code; disasm_info.buffer_length = size; + disasm_info.print_address_func = generic_print_target_address; #ifdef TARGET_WORDS_BIGENDIAN disasm_info.endian = BFD_ENDIAN_BIG; @@ -168,23 +186,36 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) 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; + if (flags & 1) { + print_insn = print_insn_thumb1; + } else { + print_insn = print_insn_arm; + } + if (flags & 2) { +#ifdef TARGET_WORDS_BIGENDIAN + disasm_info.endian = BFD_ENDIAN_LITTLE; +#else + disasm_info.endian = BFD_ENDIAN_BIG; +#endif + } #elif defined(TARGET_SPARC) print_insn = print_insn_sparc; #ifdef TARGET_SPARC64 disasm_info.mach = bfd_mach_sparc_v9b; -#endif +#endif #elif defined(TARGET_PPC) - if (flags) + 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; + disasm_info.mach = bfd_mach_ppc64; #else - disasm_info.mach = bfd_mach_ppc; + disasm_info.mach = bfd_mach_ppc; #endif + } print_insn = print_insn_ppc; #elif defined(TARGET_M68K) print_insn = print_insn_m68k; @@ -198,15 +229,32 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) disasm_info.mach = bfd_mach_sh4; print_insn = print_insn_sh; #elif defined(TARGET_ALPHA) - disasm_info.mach = bfd_mach_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; +#elif defined(TARGET_LM32) + disasm_info.mach = bfd_mach_lm32; + print_insn = print_insn_lm32; #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) { + for (pc = code; size > 0; pc += count, size -= count) { fprintf(out, "0x" TARGET_FMT_lx ": ", pc); count = print_insn(pc, &disasm_info); #if 0 @@ -224,43 +272,51 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) 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; + uintptr_t 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.print_address_func = generic_print_host_address; disasm_info.buffer = code; - disasm_info.buffer_vma = (unsigned long)code; + disasm_info.buffer_vma = (uintptr_t)code; disasm_info.buffer_length = size; -#ifdef WORDS_BIGENDIAN +#ifdef HOST_WORDS_BIGENDIAN disasm_info.endian = BFD_ENDIAN_BIG; #else disasm_info.endian = BFD_ENDIAN_LITTLE; #endif -#if defined(__i386__) +#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(__powerpc__) +#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__) @@ -271,18 +327,17 @@ void disas(FILE *out, void *code, unsigned long size) 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; 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 + for (pc = (uintptr_t)code; size > 0; pc += count, size -= count) { + fprintf(out, "0x%08" PRIxPTR ": ", pc); count = print_insn(pc, &disasm_info); fprintf(out, "\n"); if (count < 0) @@ -293,79 +348,61 @@ void disas(FILE *out, void *code, unsigned long size) /* 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; + const char *symbol = ""; 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; - } + 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 CPUState *monitor_disas_env; +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(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(CPUState *env, +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; + disasm_info.print_address_func = generic_print_target_address; disasm_info.buffer_vma = pc; @@ -384,6 +421,8 @@ void monitor_disas(CPUState *env, 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 @@ -404,16 +443,25 @@ void monitor_disas(CPUState *env, #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; +#elif defined(TARGET_LM32) + disasm_info.mach = bfd_mach_lm32; + print_insn = print_insn_lm32; #else - term_printf("0x" TARGET_FMT_lx - ": Asm output not supported on this arch\n", pc); + 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" TARGET_FMT_lx ": ", 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;