From f721e3ac031f892af46f255a47d7f54a91317b30 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- disas.c | 431 ---------------------------------------------------------------- 1 file changed, 431 deletions(-) delete mode 100644 disas.c (limited to 'disas.c') diff --git a/disas.c b/disas.c deleted file mode 100644 index a8bc8ad..0000000 --- a/disas.c +++ /dev/null @@ -1,431 +0,0 @@ -/* General "disassemble this chunk" code. Used for debugging. */ -#include "config.h" -#include "dis-asm.h" -#include "elf.h" -#include - -#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 >> 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 - 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; -#elif defined(TARGET_CRIS) - disasm_info.mach = bfd_mach_cris_v32; - print_insn = print_insn_crisv32; -#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; -#elif defined(__hppa__) - print_insn = print_insn_hppa; -#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 (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_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 -#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 -- cgit v1.1