2003-04-29 22:41:16 +02:00
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/* General "disassemble this chunk" code. Used for debugging. */
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2003-06-09 21:38:38 +02:00
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#include "config.h"
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2003-04-29 22:41:16 +02:00
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#include "dis-asm.h"
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#include "elf.h"
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2003-06-09 17:23:31 +02:00
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#include <errno.h>
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2003-04-29 22:41:16 +02:00
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2003-10-27 22:13:58 +01:00
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#include "cpu.h"
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#include "exec-all.h"
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2004-04-04 14:57:25 +02:00
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#include "disas.h"
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2003-10-27 22:13:58 +01:00
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2003-04-29 22:41:16 +02:00
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/* Filled in by elfload.c. Simplistic, but will do for now. */
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2004-12-20 00:18:01 +01:00
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struct syminfo *syminfos = NULL;
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2003-04-29 22:41:16 +02:00
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2003-06-09 17:23:31 +02:00
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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 (memaddr, myaddr, length, info)
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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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2003-10-27 22:13:58 +01:00
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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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2003-06-09 17:23:31 +02:00
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}
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2003-10-27 22:13:58 +01:00
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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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2005-01-04 00:35:10 +01:00
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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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2003-10-27 22:13:58 +01:00
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{
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int i;
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for(i = 0; i < length; i++) {
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2005-01-04 00:35:10 +01:00
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myaddr[i] = ldub_code(memaddr + i);
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2003-10-27 22:13:58 +01:00
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}
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return 0;
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}
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2003-06-09 17:23:31 +02:00
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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 (status, memaddr, info)
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int status;
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bfd_vma memaddr;
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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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2003-07-13 19:29:55 +02:00
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"Address 0x%llx is out of bounds.\n", memaddr);
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2003-06-09 17:23:31 +02:00
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}
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/* This could be in a separate file, to save miniscule 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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void
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generic_print_address (addr, info)
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bfd_vma addr;
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struct disassemble_info *info;
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{
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2003-07-13 19:29:55 +02:00
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(*info->fprintf_func) (info->stream, "0x%llx", addr);
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2003-06-09 17:23:31 +02:00
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}
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/* Just return the given address. */
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int
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generic_symbol_at_address (addr, info)
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bfd_vma addr;
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struct disassemble_info * info;
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{
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return 1;
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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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2005-07-02 16:58:51 +02:00
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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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2005-04-27 22:15:00 +02:00
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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 teh following
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values:
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i386 - nonzero means 16 bit code
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arm - nonzero means thumb code
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2005-11-22 00:25:50 +01:00
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ppc - nonzero means little endian
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2005-04-27 22:15:00 +02:00
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other targets - unused
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*/
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2005-01-23 21:26:30 +01:00
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void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
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2003-04-29 22:41:16 +02:00
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{
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2005-01-04 00:35:10 +01:00
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target_ulong pc;
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2003-04-29 22:41:16 +02:00
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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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2005-01-04 00:35:10 +01:00
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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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#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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2005-04-27 22:15:00 +02:00
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if (flags)
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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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2005-01-04 00:35:10 +01:00
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#elif defined(TARGET_SPARC)
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print_insn = print_insn_sparc;
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2005-07-02 16:31:34 +02:00
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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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2005-01-04 00:35:10 +01:00
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#elif defined(TARGET_PPC)
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2005-11-22 00:25:50 +01:00
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if (flags)
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2005-04-23 20:16:07 +02:00
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disasm_info.endian = BFD_ENDIAN_LITTLE;
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2005-07-24 00:39:53 +02:00
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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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2005-01-04 00:35:10 +01:00
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print_insn = print_insn_ppc;
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2005-07-02 16:58:51 +02:00
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#elif defined(TARGET_MIPS)
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2005-12-17 02:10:04 +01:00
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#ifdef TARGET_WORDS_BIGENDIAN
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2005-07-02 16:58:51 +02:00
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print_insn = print_insn_big_mips;
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2005-12-17 02:10:04 +01:00
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#else
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print_insn = print_insn_little_mips;
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#endif
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2005-11-06 17:52:11 +01:00
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#elif defined(TARGET_M68K)
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print_insn = print_insn_m68k;
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2005-01-04 00:35:10 +01:00
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#else
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2005-04-08 00:20:31 +02:00
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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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2005-01-04 00:35:10 +01:00
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return;
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2003-10-27 22:13:58 +01:00
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#endif
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2005-01-04 00:35:10 +01:00
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for (pc = code; pc < code + size; pc += count) {
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2005-02-01 00:32:31 +01:00
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fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
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2005-01-04 00:35:10 +01:00
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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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}
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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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unsigned long 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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2003-04-29 22:41:16 +02:00
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disasm_info.buffer = code;
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disasm_info.buffer_vma = (unsigned long)code;
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disasm_info.buffer_length = size;
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#ifdef WORDS_BIGENDIAN
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2005-01-04 00:35:10 +01:00
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disasm_info.endian = BFD_ENDIAN_BIG;
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2003-04-29 22:41:16 +02:00
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#else
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2005-01-04 00:35:10 +01:00
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disasm_info.endian = BFD_ENDIAN_LITTLE;
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2003-04-29 22:41:16 +02:00
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#endif
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2004-03-18 00:46:04 +01:00
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#if defined(__i386__)
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2005-01-04 00:35:10 +01:00
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disasm_info.mach = bfd_mach_i386_i386;
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print_insn = print_insn_i386;
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2004-03-18 00:46:04 +01:00
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#elif defined(__x86_64__)
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2005-01-04 00:35:10 +01:00
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disasm_info.mach = bfd_mach_x86_64;
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print_insn = print_insn_i386;
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2003-04-29 22:41:16 +02:00
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#elif defined(__powerpc__)
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2005-01-04 00:35:10 +01:00
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print_insn = print_insn_ppc;
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2003-05-11 14:25:45 +02:00
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#elif defined(__alpha__)
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2005-01-04 00:35:10 +01:00
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print_insn = print_insn_alpha;
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2003-06-09 17:23:31 +02:00
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#elif defined(__sparc__)
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2005-01-04 00:35:10 +01:00
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print_insn = print_insn_sparc;
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2003-06-09 17:23:31 +02:00
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#elif defined(__arm__)
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2005-01-04 00:35:10 +01:00
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print_insn = print_insn_arm;
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2005-07-02 16:58:51 +02:00
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#elif defined(__MIPSEB__)
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print_insn = print_insn_big_mips;
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#elif defined(__MIPSEL__)
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print_insn = print_insn_little_mips;
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2005-11-06 17:52:11 +01:00
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#elif defined(__m68k__)
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print_insn = print_insn_m68k;
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2003-04-29 22:41:16 +02:00
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#else
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2005-04-08 00:20:31 +02:00
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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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2005-01-04 00:35:10 +01:00
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return;
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2003-04-29 22:41:16 +02:00
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#endif
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2005-01-04 00:35:10 +01:00
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for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) {
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fprintf(out, "0x%08lx: ", pc);
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2003-06-09 17:23:31 +02:00
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#ifdef __arm__
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/* since data are included in the code, it is better to
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display code data too */
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2003-06-15 21:44:10 +02:00
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if (is_host) {
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2003-06-09 17:23:31 +02:00
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fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
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}
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#endif
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2005-01-04 00:35:10 +01:00
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count = print_insn(pc, &disasm_info);
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2003-04-29 22:41:16 +02:00
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fprintf(out, "\n");
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if (count < 0)
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break;
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}
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}
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/* Look up symbol for debugging purpose. Returns "" if unknown. */
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2005-01-04 00:35:10 +01:00
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const char *lookup_symbol(target_ulong orig_addr)
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2003-04-29 22:41:16 +02:00
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{
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unsigned int i;
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/* Hack, because we know this is x86. */
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2004-12-20 00:18:01 +01:00
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Elf32_Sym *sym;
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struct syminfo *s;
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2005-10-30 19:21:23 +01:00
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target_ulong addr;
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2004-12-20 00:18:01 +01:00
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for (s = syminfos; s; s = s->next) {
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sym = s->disas_symtab;
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for (i = 0; i < s->disas_num_syms; i++) {
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if (sym[i].st_shndx == SHN_UNDEF
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|| sym[i].st_shndx >= SHN_LORESERVE)
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continue;
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2003-04-29 22:41:16 +02:00
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2004-12-20 00:18:01 +01:00
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if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
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continue;
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2003-04-29 22:41:16 +02:00
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2005-10-30 19:21:23 +01:00
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addr = sym[i].st_value;
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#ifdef TARGET_ARM
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/* The bottom address bit marks a Thumb symbol. */
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|
|
|
addr &= ~(target_ulong)1;
|
|
|
|
#endif
|
|
|
|
if (orig_addr >= addr
|
|
|
|
&& orig_addr < addr + sym[i].st_size)
|
2004-12-20 00:18:01 +01:00
|
|
|
return s->disas_strtab + sym[i].st_name;
|
|
|
|
}
|
2003-04-29 22:41:16 +02:00
|
|
|
}
|
|
|
|
return "";
|
|
|
|
}
|
2004-04-04 14:57:25 +02:00
|
|
|
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
|
|
|
2004-08-01 23:49:07 +02:00
|
|
|
void term_vprintf(const char *fmt, va_list ap);
|
|
|
|
void term_printf(const char *fmt, ...);
|
|
|
|
|
2004-04-04 14:57:25 +02:00
|
|
|
static int monitor_disas_is_physical;
|
2005-11-22 00:25:50 +01:00
|
|
|
static CPUState *monitor_disas_env;
|
2004-04-04 14:57:25 +02:00
|
|
|
|
|
|
|
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 {
|
2005-11-22 00:25:50 +01:00
|
|
|
cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
|
2004-04-04 14:57:25 +02:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2004-08-01 23:49:07 +02:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2005-11-22 00:25:50 +01:00
|
|
|
void monitor_disas(CPUState *env,
|
|
|
|
target_ulong pc, int nb_insn, int is_physical, int flags)
|
2004-04-04 14:57:25 +02:00
|
|
|
{
|
|
|
|
int count, i;
|
|
|
|
struct disassemble_info disasm_info;
|
|
|
|
int (*print_insn)(bfd_vma pc, disassemble_info *info);
|
|
|
|
|
2004-08-01 23:49:07 +02:00
|
|
|
INIT_DISASSEMBLE_INFO(disasm_info, NULL, monitor_fprintf);
|
2004-04-04 14:57:25 +02:00
|
|
|
|
2005-11-22 00:25:50 +01:00
|
|
|
monitor_disas_env = env;
|
2004-04-04 14:57:25 +02:00
|
|
|
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)
|
2005-02-01 00:32:31 +01:00
|
|
|
if (flags == 2)
|
|
|
|
disasm_info.mach = bfd_mach_x86_64;
|
|
|
|
else if (flags == 1)
|
2004-04-04 14:57:25 +02:00
|
|
|
disasm_info.mach = bfd_mach_i386_i8086;
|
2005-02-01 00:32:31 +01:00
|
|
|
else
|
|
|
|
disasm_info.mach = bfd_mach_i386_i386;
|
2004-04-04 14:57:25 +02:00
|
|
|
print_insn = print_insn_i386;
|
|
|
|
#elif defined(TARGET_ARM)
|
|
|
|
print_insn = print_insn_arm;
|
|
|
|
#elif defined(TARGET_SPARC)
|
|
|
|
print_insn = print_insn_sparc;
|
|
|
|
#elif defined(TARGET_PPC)
|
2005-07-24 00:39:53 +02:00
|
|
|
#ifdef TARGET_PPC64
|
|
|
|
disasm_info.mach = bfd_mach_ppc64;
|
|
|
|
#else
|
|
|
|
disasm_info.mach = bfd_mach_ppc;
|
|
|
|
#endif
|
2004-04-04 14:57:25 +02:00
|
|
|
print_insn = print_insn_ppc;
|
2005-07-02 16:58:51 +02:00
|
|
|
#elif defined(TARGET_MIPS)
|
2005-12-17 02:10:04 +01:00
|
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
2005-07-02 16:58:51 +02:00
|
|
|
print_insn = print_insn_big_mips;
|
2005-12-17 02:10:04 +01:00
|
|
|
#else
|
|
|
|
print_insn = print_insn_little_mips;
|
|
|
|
#endif
|
2005-11-06 17:52:11 +01:00
|
|
|
#elif defined(TARGET_M68K)
|
|
|
|
print_insn = print_insn_m68k;
|
2004-04-04 14:57:25 +02:00
|
|
|
#else
|
2005-04-08 00:20:31 +02:00
|
|
|
term_printf("0x" TARGET_FMT_lx
|
|
|
|
": Asm output not supported on this arch\n", pc);
|
2004-04-04 14:57:25 +02:00
|
|
|
return;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
for(i = 0; i < nb_insn; i++) {
|
2005-02-01 00:32:31 +01:00
|
|
|
term_printf("0x" TARGET_FMT_lx ": ", pc);
|
2004-04-04 14:57:25 +02:00
|
|
|
count = print_insn(pc, &disasm_info);
|
2004-08-01 23:49:07 +02:00
|
|
|
term_printf("\n");
|
2004-04-04 14:57:25 +02:00
|
|
|
if (count < 0)
|
|
|
|
break;
|
|
|
|
pc += count;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|