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/* General "disassemble this chunk" code. Used for debugging. */
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#include "config.h" |
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#include "disas/bfd.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/disas.h" |
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|
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typedef struct CPUDebug { |
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struct disassemble_info info;
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CPUArchState *env; |
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} CPUDebug; |
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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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CPUDebug *s = container_of(info, CPUDebug, info); |
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|
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cpu_memory_rw_debug(ENV_GET_CPU(s->env), memaddr, myaddr, length, 0);
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return 0; |
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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static int print_insn_objdump(bfd_vma pc, disassemble_info *info, |
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const char *prefix) |
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{ |
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int i, n = info->buffer_length;
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uint8_t *buf = g_malloc(n); |
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|
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info->read_memory_func(pc, buf, n, info); |
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|
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for (i = 0; i < n; ++i) { |
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if (i % 32 == 0) { |
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info->fprintf_func(info->stream, "\n%s: ", prefix);
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} |
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info->fprintf_func(info->stream, "%02x", buf[i]);
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} |
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|
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g_free(buf); |
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return n;
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} |
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|
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static int print_insn_od_host(bfd_vma pc, disassemble_info *info) |
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{ |
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return print_insn_objdump(pc, info, "OBJD-H"); |
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} |
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|
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static int print_insn_od_target(bfd_vma pc, disassemble_info *info) |
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{ |
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return print_insn_objdump(pc, info, "OBJD-T"); |
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} |
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|
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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, bit 2 = A64
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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, CPUArchState *env, target_ulong code,
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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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CPUDebug s; |
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int (*print_insn)(bfd_vma pc, disassemble_info *info) = NULL; |
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|
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INIT_DISASSEMBLE_INFO(s.info, out, fprintf); |
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|
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s.env = env; |
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s.info.read_memory_func = target_read_memory; |
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s.info.buffer_vma = code; |
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s.info.buffer_length = size; |
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s.info.print_address_func = generic_print_target_address; |
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|
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#ifdef TARGET_WORDS_BIGENDIAN
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s.info.endian = BFD_ENDIAN_BIG; |
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#else
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s.info.endian = BFD_ENDIAN_LITTLE; |
217 |
#endif
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#if defined(TARGET_I386)
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if (flags == 2) { |
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s.info.mach = bfd_mach_x86_64; |
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} else if (flags == 1) { |
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s.info.mach = bfd_mach_i386_i8086; |
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} else {
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s.info.mach = bfd_mach_i386_i386; |
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} |
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print_insn = print_insn_i386; |
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#elif defined(TARGET_ARM)
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if (flags & 4) { |
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/* We might not be compiled with the A64 disassembler
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* because it needs a C++ compiler; in that case we will
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* fall through to the default print_insn_od case.
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*/
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#if defined(CONFIG_ARM_A64_DIS)
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print_insn = print_insn_arm_a64; |
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#endif
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} else 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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s.info.endian = BFD_ENDIAN_LITTLE; |
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#else
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s.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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s.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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s.info.endian = BFD_ENDIAN_LITTLE; |
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} |
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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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s.info.mach = flags & 0xFFFF;
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} else {
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#ifdef TARGET_PPC64
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s.info.mach = bfd_mach_ppc64; |
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#else
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s.info.mach = bfd_mach_ppc; |
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#endif
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} |
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s.info.disassembler_options = (char *)"any"; |
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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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s.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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s.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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s.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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s.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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s.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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s.info.mach = bfd_arch_microblaze; |
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print_insn = print_insn_microblaze; |
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#elif defined(TARGET_MOXIE)
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s.info.mach = bfd_arch_moxie; |
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print_insn = print_insn_moxie; |
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#elif defined(TARGET_LM32)
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s.info.mach = bfd_mach_lm32; |
302 |
print_insn = print_insn_lm32; |
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#endif
|
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if (print_insn == NULL) { |
305 |
print_insn = print_insn_od_target; |
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} |
307 |
|
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for (pc = code; size > 0; pc += count, size -= count) { |
309 |
fprintf(out, "0x" TARGET_FMT_lx ": ", pc); |
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count = print_insn(pc, &s.info); |
311 |
#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, &s.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;
|
326 |
if (size < count) {
|
327 |
fprintf(out, |
328 |
"Disassembler disagrees with translator over instruction "
|
329 |
"decoding\n"
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330 |
"Please report this to qemu-devel@nongnu.org\n");
|
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break;
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} |
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} |
334 |
} |
335 |
|
336 |
/* Disassemble this for me please... (debugging). */
|
337 |
void disas(FILE *out, void *code, unsigned long size) |
338 |
{ |
339 |
uintptr_t pc; |
340 |
int count;
|
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CPUDebug s; |
342 |
int (*print_insn)(bfd_vma pc, disassemble_info *info) = NULL; |
343 |
|
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INIT_DISASSEMBLE_INFO(s.info, out, fprintf); |
345 |
s.info.print_address_func = generic_print_host_address; |
346 |
|
347 |
s.info.buffer = code; |
348 |
s.info.buffer_vma = (uintptr_t)code; |
349 |
s.info.buffer_length = size; |
350 |
|
351 |
#ifdef HOST_WORDS_BIGENDIAN
|
352 |
s.info.endian = BFD_ENDIAN_BIG; |
353 |
#else
|
354 |
s.info.endian = BFD_ENDIAN_LITTLE; |
355 |
#endif
|
356 |
#if defined(CONFIG_TCG_INTERPRETER)
|
357 |
print_insn = print_insn_tci; |
358 |
#elif defined(__i386__)
|
359 |
s.info.mach = bfd_mach_i386_i386; |
360 |
print_insn = print_insn_i386; |
361 |
#elif defined(__x86_64__)
|
362 |
s.info.mach = bfd_mach_x86_64; |
363 |
print_insn = print_insn_i386; |
364 |
#elif defined(_ARCH_PPC)
|
365 |
s.info.disassembler_options = (char *)"any"; |
366 |
print_insn = print_insn_ppc; |
367 |
#elif defined(__aarch64__) && defined(CONFIG_ARM_A64_DIS)
|
368 |
print_insn = print_insn_arm_a64; |
369 |
#elif defined(__alpha__)
|
370 |
print_insn = print_insn_alpha; |
371 |
#elif defined(__sparc__)
|
372 |
print_insn = print_insn_sparc; |
373 |
s.info.mach = bfd_mach_sparc_v9b; |
374 |
#elif defined(__arm__)
|
375 |
print_insn = print_insn_arm; |
376 |
#elif defined(__MIPSEB__)
|
377 |
print_insn = print_insn_big_mips; |
378 |
#elif defined(__MIPSEL__)
|
379 |
print_insn = print_insn_little_mips; |
380 |
#elif defined(__m68k__)
|
381 |
print_insn = print_insn_m68k; |
382 |
#elif defined(__s390__)
|
383 |
print_insn = print_insn_s390; |
384 |
#elif defined(__hppa__)
|
385 |
print_insn = print_insn_hppa; |
386 |
#elif defined(__ia64__)
|
387 |
print_insn = print_insn_ia64; |
388 |
#endif
|
389 |
if (print_insn == NULL) { |
390 |
print_insn = print_insn_od_host; |
391 |
} |
392 |
for (pc = (uintptr_t)code; size > 0; pc += count, size -= count) { |
393 |
fprintf(out, "0x%08" PRIxPTR ": ", pc); |
394 |
count = print_insn(pc, &s.info); |
395 |
fprintf(out, "\n");
|
396 |
if (count < 0) |
397 |
break;
|
398 |
} |
399 |
} |
400 |
|
401 |
/* Look up symbol for debugging purpose. Returns "" if unknown. */
|
402 |
const char *lookup_symbol(target_ulong orig_addr) |
403 |
{ |
404 |
const char *symbol = ""; |
405 |
struct syminfo *s;
|
406 |
|
407 |
for (s = syminfos; s; s = s->next) {
|
408 |
symbol = s->lookup_symbol(s, orig_addr); |
409 |
if (symbol[0] != '\0') { |
410 |
break;
|
411 |
} |
412 |
} |
413 |
|
414 |
return symbol;
|
415 |
} |
416 |
|
417 |
#if !defined(CONFIG_USER_ONLY)
|
418 |
|
419 |
#include "monitor/monitor.h" |
420 |
|
421 |
static int monitor_disas_is_physical; |
422 |
|
423 |
static int |
424 |
monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
|
425 |
struct disassemble_info *info)
|
426 |
{ |
427 |
CPUDebug *s = container_of(info, CPUDebug, info); |
428 |
|
429 |
if (monitor_disas_is_physical) {
|
430 |
cpu_physical_memory_read(memaddr, myaddr, length); |
431 |
} else {
|
432 |
cpu_memory_rw_debug(ENV_GET_CPU(s->env), memaddr, myaddr, length, 0);
|
433 |
} |
434 |
return 0; |
435 |
} |
436 |
|
437 |
static int GCC_FMT_ATTR(2, 3) |
438 |
monitor_fprintf(FILE *stream, const char *fmt, ...) |
439 |
{ |
440 |
va_list ap; |
441 |
va_start(ap, fmt); |
442 |
monitor_vprintf((Monitor *)stream, fmt, ap); |
443 |
va_end(ap); |
444 |
return 0; |
445 |
} |
446 |
|
447 |
void monitor_disas(Monitor *mon, CPUArchState *env,
|
448 |
target_ulong pc, int nb_insn, int is_physical, int flags) |
449 |
{ |
450 |
int count, i;
|
451 |
CPUDebug s; |
452 |
int (*print_insn)(bfd_vma pc, disassemble_info *info);
|
453 |
|
454 |
INIT_DISASSEMBLE_INFO(s.info, (FILE *)mon, monitor_fprintf); |
455 |
|
456 |
s.env = env; |
457 |
monitor_disas_is_physical = is_physical; |
458 |
s.info.read_memory_func = monitor_read_memory; |
459 |
s.info.print_address_func = generic_print_target_address; |
460 |
|
461 |
s.info.buffer_vma = pc; |
462 |
|
463 |
#ifdef TARGET_WORDS_BIGENDIAN
|
464 |
s.info.endian = BFD_ENDIAN_BIG; |
465 |
#else
|
466 |
s.info.endian = BFD_ENDIAN_LITTLE; |
467 |
#endif
|
468 |
#if defined(TARGET_I386)
|
469 |
if (flags == 2) { |
470 |
s.info.mach = bfd_mach_x86_64; |
471 |
} else if (flags == 1) { |
472 |
s.info.mach = bfd_mach_i386_i8086; |
473 |
} else {
|
474 |
s.info.mach = bfd_mach_i386_i386; |
475 |
} |
476 |
print_insn = print_insn_i386; |
477 |
#elif defined(TARGET_ARM)
|
478 |
print_insn = print_insn_arm; |
479 |
#elif defined(TARGET_ALPHA)
|
480 |
print_insn = print_insn_alpha; |
481 |
#elif defined(TARGET_SPARC)
|
482 |
print_insn = print_insn_sparc; |
483 |
#ifdef TARGET_SPARC64
|
484 |
s.info.mach = bfd_mach_sparc_v9b; |
485 |
#endif
|
486 |
#elif defined(TARGET_PPC)
|
487 |
#ifdef TARGET_PPC64
|
488 |
s.info.mach = bfd_mach_ppc64; |
489 |
#else
|
490 |
s.info.mach = bfd_mach_ppc; |
491 |
#endif
|
492 |
print_insn = print_insn_ppc; |
493 |
#elif defined(TARGET_M68K)
|
494 |
print_insn = print_insn_m68k; |
495 |
#elif defined(TARGET_MIPS)
|
496 |
#ifdef TARGET_WORDS_BIGENDIAN
|
497 |
print_insn = print_insn_big_mips; |
498 |
#else
|
499 |
print_insn = print_insn_little_mips; |
500 |
#endif
|
501 |
#elif defined(TARGET_SH4)
|
502 |
s.info.mach = bfd_mach_sh4; |
503 |
print_insn = print_insn_sh; |
504 |
#elif defined(TARGET_S390X)
|
505 |
s.info.mach = bfd_mach_s390_64; |
506 |
print_insn = print_insn_s390; |
507 |
#elif defined(TARGET_MOXIE)
|
508 |
s.info.mach = bfd_arch_moxie; |
509 |
print_insn = print_insn_moxie; |
510 |
#elif defined(TARGET_LM32)
|
511 |
s.info.mach = bfd_mach_lm32; |
512 |
print_insn = print_insn_lm32; |
513 |
#else
|
514 |
monitor_printf(mon, "0x" TARGET_FMT_lx
|
515 |
": Asm output not supported on this arch\n", pc);
|
516 |
return;
|
517 |
#endif
|
518 |
|
519 |
for(i = 0; i < nb_insn; i++) { |
520 |
monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc); |
521 |
count = print_insn(pc, &s.info); |
522 |
monitor_printf(mon, "\n");
|
523 |
if (count < 0) |
524 |
break;
|
525 |
pc += count; |
526 |
} |
527 |
} |
528 |
#endif
|