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| 1 |
/* General "disassemble this chunk" code. Used for debugging. */
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#include "config.h" |
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#include "dis-asm.h" |
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#include "elf.h" |
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#include <errno.h> |
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|
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#include "cpu.h" |
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#include "disas.h" |
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|
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/* Filled in by elfload.c. Simplistic, but will do for now. */
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struct syminfo *syminfos = NULL; |
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|
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/* Get LENGTH bytes from info's buffer, at target address memaddr.
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Transfer them to myaddr. */
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int
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buffer_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
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struct disassemble_info *info)
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{
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if (memaddr < info->buffer_vma
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|| memaddr + length > info->buffer_vma + info->buffer_length) |
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/* Out of bounds. Use EIO because GDB uses it. */
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return EIO;
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memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length); |
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return 0; |
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} |
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|
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/* Get LENGTH bytes from info's buffer, at target address memaddr.
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Transfer them to myaddr. */
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static int |
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target_read_memory (bfd_vma memaddr, |
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bfd_byte *myaddr, |
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int length,
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struct disassemble_info *info)
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{
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cpu_memory_rw_debug(cpu_single_env, memaddr, myaddr, length, 0);
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return 0; |
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} |
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/* Print an error message. We can assume that this is in response to
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an error return from buffer_read_memory. */
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void
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perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info) |
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{
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if (status != EIO)
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/* Can't happen. */
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(*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
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else
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/* Actually, address between memaddr and memaddr + len was
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out of bounds. */
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(*info->fprintf_func) (info->stream, |
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"Address 0x%" PRIx64 " is out of bounds.\n", memaddr); |
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} |
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/* This could be in a separate file, to save minuscule amounts of space
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in statically linked executables. */
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/* Just print the address is hex. This is included for completeness even
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though both GDB and objdump provide their own (to print symbolic
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addresses). */
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|
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void
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generic_print_address (bfd_vma addr, struct disassemble_info *info)
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{
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(*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
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} |
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|
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/* Print address in hex, truncated to the width of a target virtual address. */
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static void |
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generic_print_target_address(bfd_vma addr, struct disassemble_info *info)
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{
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uint64_t mask = ~0ULL >> (64 - TARGET_VIRT_ADDR_SPACE_BITS); |
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generic_print_address(addr & mask, info); |
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} |
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|
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/* Print address in hex, truncated to the width of a host virtual address. */
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static void |
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generic_print_host_address(bfd_vma addr, struct disassemble_info *info)
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{
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uint64_t mask = ~0ULL >> (64 - (sizeof(void *) * 8)); |
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generic_print_address(addr & mask, info); |
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} |
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|
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/* Just return the given address. */
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|
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int
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generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info)
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{
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return 1; |
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} |
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|
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bfd_vma bfd_getl64 (const bfd_byte *addr)
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{
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unsigned long long v; |
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v = (unsigned long long) addr[0]; |
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v |= (unsigned long long) addr[1] << 8; |
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v |= (unsigned long long) addr[2] << 16; |
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v |= (unsigned long long) addr[3] << 24; |
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v |= (unsigned long long) addr[4] << 32; |
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v |= (unsigned long long) addr[5] << 40; |
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v |= (unsigned long long) addr[6] << 48; |
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v |= (unsigned long long) addr[7] << 56; |
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return (bfd_vma) v;
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} |
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|
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bfd_vma bfd_getl32 (const bfd_byte *addr)
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{
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unsigned long v; |
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v = (unsigned long) addr[0]; |
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v |= (unsigned long) addr[1] << 8; |
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v |= (unsigned long) addr[2] << 16; |
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v |= (unsigned long) addr[3] << 24; |
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return (bfd_vma) v;
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} |
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bfd_vma bfd_getb32 (const bfd_byte *addr)
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{
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unsigned long v; |
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v = (unsigned long) addr[0] << 24; |
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v |= (unsigned long) addr[1] << 16; |
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v |= (unsigned long) addr[2] << 8; |
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v |= (unsigned long) addr[3]; |
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return (bfd_vma) v;
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} |
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bfd_vma bfd_getl16 (const bfd_byte *addr)
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{
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unsigned long v; |
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v = (unsigned long) addr[0]; |
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v |= (unsigned long) addr[1] << 8; |
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return (bfd_vma) v;
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} |
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bfd_vma bfd_getb16 (const bfd_byte *addr)
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{
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unsigned long v; |
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v = (unsigned long) addr[0] << 24; |
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v |= (unsigned long) addr[1] << 16; |
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return (bfd_vma) v;
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} |
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#ifdef TARGET_ARM
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static int |
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print_insn_thumb1(bfd_vma pc, disassemble_info *info) |
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{
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return print_insn_arm(pc | 1, info); |
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} |
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#endif
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/* Disassemble this for me please... (debugging). 'flags' has the following
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values:
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i386 - 1 means 16 bit code, 2 means 64 bit code
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arm - bit 0 = thumb, bit 1 = reverse endian
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ppc - nonzero means little endian
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other targets - unused
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*/
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void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) |
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{
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target_ulong pc; |
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int count;
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struct disassemble_info disasm_info;
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int (*print_insn)(bfd_vma pc, disassemble_info *info);
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INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf); |
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disasm_info.read_memory_func = target_read_memory; |
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disasm_info.buffer_vma = code; |
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disasm_info.buffer_length = size; |
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disasm_info.print_address_func = generic_print_target_address; |
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|
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#ifdef TARGET_WORDS_BIGENDIAN
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disasm_info.endian = BFD_ENDIAN_BIG; |
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#else
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disasm_info.endian = BFD_ENDIAN_LITTLE; |
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#endif
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#if defined(TARGET_I386)
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if (flags == 2) |
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disasm_info.mach = bfd_mach_x86_64; |
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else if (flags == 1) |
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disasm_info.mach = bfd_mach_i386_i8086; |
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else
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disasm_info.mach = bfd_mach_i386_i386; |
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print_insn = print_insn_i386; |
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#elif defined(TARGET_ARM)
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if (flags & 1) { |
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print_insn = print_insn_thumb1; |
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} else {
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print_insn = print_insn_arm; |
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} |
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if (flags & 2) { |
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#ifdef TARGET_WORDS_BIGENDIAN
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disasm_info.endian = BFD_ENDIAN_LITTLE; |
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#else
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disasm_info.endian = BFD_ENDIAN_BIG; |
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#endif
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} |
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#elif defined(TARGET_SPARC)
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print_insn = print_insn_sparc; |
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#ifdef TARGET_SPARC64
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disasm_info.mach = bfd_mach_sparc_v9b; |
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#endif
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#elif defined(TARGET_PPC)
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if (flags >> 16) |
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disasm_info.endian = BFD_ENDIAN_LITTLE; |
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if (flags & 0xFFFF) { |
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/* If we have a precise definitions of the instructions set, use it */
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disasm_info.mach = flags & 0xFFFF;
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} else {
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#ifdef TARGET_PPC64
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disasm_info.mach = bfd_mach_ppc64; |
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#else
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disasm_info.mach = bfd_mach_ppc; |
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#endif
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} |
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print_insn = print_insn_ppc; |
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#elif defined(TARGET_M68K)
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print_insn = print_insn_m68k; |
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#elif defined(TARGET_MIPS)
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#ifdef TARGET_WORDS_BIGENDIAN
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print_insn = print_insn_big_mips; |
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#else
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print_insn = print_insn_little_mips; |
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#endif
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#elif defined(TARGET_SH4)
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disasm_info.mach = bfd_mach_sh4; |
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print_insn = print_insn_sh; |
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#elif defined(TARGET_ALPHA)
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disasm_info.mach = bfd_mach_alpha_ev6; |
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print_insn = print_insn_alpha; |
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#elif defined(TARGET_CRIS)
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if (flags != 32) { |
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disasm_info.mach = bfd_mach_cris_v0_v10; |
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print_insn = print_insn_crisv10; |
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} else {
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disasm_info.mach = bfd_mach_cris_v32; |
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print_insn = print_insn_crisv32; |
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} |
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#elif defined(TARGET_S390X)
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disasm_info.mach = bfd_mach_s390_64; |
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print_insn = print_insn_s390; |
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#elif defined(TARGET_MICROBLAZE)
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disasm_info.mach = bfd_arch_microblaze; |
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print_insn = print_insn_microblaze; |
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#elif defined(TARGET_LM32)
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disasm_info.mach = bfd_mach_lm32; |
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print_insn = print_insn_lm32; |
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#else
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fprintf(out, "0x" TARGET_FMT_lx
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": Asm output not supported on this arch\n", code);
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return;
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#endif
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|
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for (pc = code; size > 0; pc += count, size -= count) { |
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fprintf(out, "0x" TARGET_FMT_lx ": ", pc); |
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count = print_insn(pc, &disasm_info); |
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#if 0
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{
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int i;
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uint8_t b;
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fprintf(out, " {");
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for(i = 0; i < count; i++) {
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target_read_memory(pc + i, &b, 1, &disasm_info);
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fprintf(out, " %02x", b);
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}
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fprintf(out, " }");
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}
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#endif
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fprintf(out, "\n");
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if (count < 0) |
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break;
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if (size < count) {
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fprintf(out, |
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"Disassembler disagrees with translator over instruction "
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"decoding\n"
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"Please report this to qemu-devel@nongnu.org\n");
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break;
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} |
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} |
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} |
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|
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/* Disassemble this for me please... (debugging). */
|
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void disas(FILE *out, void *code, unsigned long size) |
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{
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uintptr_t pc; |
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int count;
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struct disassemble_info disasm_info;
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int (*print_insn)(bfd_vma pc, disassemble_info *info);
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|
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INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf); |
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disasm_info.print_address_func = generic_print_host_address; |
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|
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disasm_info.buffer = code; |
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disasm_info.buffer_vma = (uintptr_t)code; |
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disasm_info.buffer_length = size; |
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|
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#ifdef HOST_WORDS_BIGENDIAN
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disasm_info.endian = BFD_ENDIAN_BIG; |
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#else
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disasm_info.endian = BFD_ENDIAN_LITTLE; |
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#endif
|
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#if defined(CONFIG_TCG_INTERPRETER)
|
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print_insn = print_insn_tci; |
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#elif defined(__i386__)
|
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disasm_info.mach = bfd_mach_i386_i386; |
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print_insn = print_insn_i386; |
| 310 |
#elif defined(__x86_64__)
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disasm_info.mach = bfd_mach_x86_64; |
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print_insn = print_insn_i386; |
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#elif defined(_ARCH_PPC)
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print_insn = print_insn_ppc; |
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#elif defined(__alpha__)
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print_insn = print_insn_alpha; |
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#elif defined(__sparc__)
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print_insn = print_insn_sparc; |
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disasm_info.mach = bfd_mach_sparc_v9b; |
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#elif defined(__arm__)
|
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print_insn = print_insn_arm; |
| 322 |
#elif defined(__MIPSEB__)
|
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print_insn = print_insn_big_mips; |
| 324 |
#elif defined(__MIPSEL__)
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print_insn = print_insn_little_mips; |
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#elif defined(__m68k__)
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print_insn = print_insn_m68k; |
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#elif defined(__s390__)
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print_insn = print_insn_s390; |
| 330 |
#elif defined(__hppa__)
|
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print_insn = print_insn_hppa; |
| 332 |
#elif defined(__ia64__)
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print_insn = print_insn_ia64; |
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#else
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fprintf(out, "0x%lx: Asm output not supported on this arch\n",
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(long) code);
|
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return;
|
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#endif
|
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for (pc = (uintptr_t)code; size > 0; pc += count, size -= count) { |
| 340 |
fprintf(out, "0x%08" PRIxPTR ": ", pc); |
| 341 |
count = print_insn(pc, &disasm_info); |
| 342 |
fprintf(out, "\n");
|
| 343 |
if (count < 0) |
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break;
|
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} |
| 346 |
} |
| 347 |
|
| 348 |
/* Look up symbol for debugging purpose. Returns "" if unknown. */
|
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const char *lookup_symbol(target_ulong orig_addr) |
| 350 |
{
|
| 351 |
const char *symbol = ""; |
| 352 |
struct syminfo *s;
|
| 353 |
|
| 354 |
for (s = syminfos; s; s = s->next) {
|
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symbol = s->lookup_symbol(s, orig_addr); |
| 356 |
if (symbol[0] != '\0') { |
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break;
|
| 358 |
} |
| 359 |
} |
| 360 |
|
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return symbol;
|
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} |
| 363 |
|
| 364 |
#if !defined(CONFIG_USER_ONLY)
|
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|
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#include "monitor.h" |
| 367 |
|
| 368 |
static int monitor_disas_is_physical; |
| 369 |
static CPUArchState *monitor_disas_env;
|
| 370 |
|
| 371 |
static int |
| 372 |
monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
|
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struct disassemble_info *info)
|
| 374 |
{
|
| 375 |
if (monitor_disas_is_physical) {
|
| 376 |
cpu_physical_memory_read(memaddr, myaddr, length); |
| 377 |
} else {
|
| 378 |
cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
|
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} |
| 380 |
return 0; |
| 381 |
} |
| 382 |
|
| 383 |
static int GCC_FMT_ATTR(2, 3) |
| 384 |
monitor_fprintf(FILE *stream, const char *fmt, ...) |
| 385 |
{
|
| 386 |
va_list ap; |
| 387 |
va_start(ap, fmt); |
| 388 |
monitor_vprintf((Monitor *)stream, fmt, ap); |
| 389 |
va_end(ap); |
| 390 |
return 0; |
| 391 |
} |
| 392 |
|
| 393 |
void monitor_disas(Monitor *mon, CPUArchState *env,
|
| 394 |
target_ulong pc, int nb_insn, int is_physical, int flags) |
| 395 |
{
|
| 396 |
int count, i;
|
| 397 |
struct disassemble_info disasm_info;
|
| 398 |
int (*print_insn)(bfd_vma pc, disassemble_info *info);
|
| 399 |
|
| 400 |
INIT_DISASSEMBLE_INFO(disasm_info, (FILE *)mon, monitor_fprintf); |
| 401 |
|
| 402 |
monitor_disas_env = env; |
| 403 |
monitor_disas_is_physical = is_physical; |
| 404 |
disasm_info.read_memory_func = monitor_read_memory; |
| 405 |
disasm_info.print_address_func = generic_print_target_address; |
| 406 |
|
| 407 |
disasm_info.buffer_vma = pc; |
| 408 |
|
| 409 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 410 |
disasm_info.endian = BFD_ENDIAN_BIG; |
| 411 |
#else
|
| 412 |
disasm_info.endian = BFD_ENDIAN_LITTLE; |
| 413 |
#endif
|
| 414 |
#if defined(TARGET_I386)
|
| 415 |
if (flags == 2) |
| 416 |
disasm_info.mach = bfd_mach_x86_64; |
| 417 |
else if (flags == 1) |
| 418 |
disasm_info.mach = bfd_mach_i386_i8086; |
| 419 |
else
|
| 420 |
disasm_info.mach = bfd_mach_i386_i386; |
| 421 |
print_insn = print_insn_i386; |
| 422 |
#elif defined(TARGET_ARM)
|
| 423 |
print_insn = print_insn_arm; |
| 424 |
#elif defined(TARGET_ALPHA)
|
| 425 |
print_insn = print_insn_alpha; |
| 426 |
#elif defined(TARGET_SPARC)
|
| 427 |
print_insn = print_insn_sparc; |
| 428 |
#ifdef TARGET_SPARC64
|
| 429 |
disasm_info.mach = bfd_mach_sparc_v9b; |
| 430 |
#endif
|
| 431 |
#elif defined(TARGET_PPC)
|
| 432 |
#ifdef TARGET_PPC64
|
| 433 |
disasm_info.mach = bfd_mach_ppc64; |
| 434 |
#else
|
| 435 |
disasm_info.mach = bfd_mach_ppc; |
| 436 |
#endif
|
| 437 |
print_insn = print_insn_ppc; |
| 438 |
#elif defined(TARGET_M68K)
|
| 439 |
print_insn = print_insn_m68k; |
| 440 |
#elif defined(TARGET_MIPS)
|
| 441 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 442 |
print_insn = print_insn_big_mips; |
| 443 |
#else
|
| 444 |
print_insn = print_insn_little_mips; |
| 445 |
#endif
|
| 446 |
#elif defined(TARGET_SH4)
|
| 447 |
disasm_info.mach = bfd_mach_sh4; |
| 448 |
print_insn = print_insn_sh; |
| 449 |
#elif defined(TARGET_S390X)
|
| 450 |
disasm_info.mach = bfd_mach_s390_64; |
| 451 |
print_insn = print_insn_s390; |
| 452 |
#elif defined(TARGET_LM32)
|
| 453 |
disasm_info.mach = bfd_mach_lm32; |
| 454 |
print_insn = print_insn_lm32; |
| 455 |
#else
|
| 456 |
monitor_printf(mon, "0x" TARGET_FMT_lx
|
| 457 |
": Asm output not supported on this arch\n", pc);
|
| 458 |
return;
|
| 459 |
#endif
|
| 460 |
|
| 461 |
for(i = 0; i < nb_insn; i++) { |
| 462 |
monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc); |
| 463 |
count = print_insn(pc, &disasm_info); |
| 464 |
monitor_printf(mon, "\n");
|
| 465 |
if (count < 0) |
| 466 |
break;
|
| 467 |
pc += count; |
| 468 |
} |
| 469 |
} |
| 470 |
#endif
|