diff options
Diffstat (limited to 'disas')
| -rw-r--r-- | disas/nanomips.c | 48 |
1 files changed, 19 insertions, 29 deletions
diff --git a/disas/nanomips.c b/disas/nanomips.c index e462256760..3b998118e3 100644 --- a/disas/nanomips.c +++ b/disas/nanomips.c @@ -21918,10 +21918,24 @@ static bool nanomips_dis(const uint16_t *data, char **buf, Dis_info *info) return Disassemble(data, buf, &type, MAJOR, ARRAY_SIZE(MAJOR), info) >= 0; } +static bool read_u16(uint16_t *ret, bfd_vma memaddr, + struct disassemble_info *info) +{ + int status = (*info->read_memory_func)(memaddr, (bfd_byte *)ret, 2, info); + if (status != 0) { + (*info->memory_error_func)(status, memaddr, info); + return false; + } + + if ((info->endian == BFD_ENDIAN_BIG) != HOST_BIG_ENDIAN) { + bswap16s(ret); + } + return true; +} + int print_insn_nanomips(bfd_vma memaddr, struct disassemble_info *info) { - int status, length; - bfd_byte buffer[2]; + int length; uint16_t words[3] = { }; g_autofree char *buf = NULL; @@ -21939,48 +21953,24 @@ int print_insn_nanomips(bfd_vma memaddr, struct disassemble_info *info) disassm_info.fprintf_func = info->fprintf_func; disassm_info.stream = info->stream; - status = (*info->read_memory_func)(memaddr, buffer, 2, info); - if (status != 0) { - (*info->memory_error_func)(status, memaddr, info); + if (!read_u16(&words[0], memaddr, info)) { return -1; } - - if (info->endian == BFD_ENDIAN_BIG) { - words[0] = bfd_getb16(buffer); - } else { - words[0] = bfd_getl16(buffer); - } length = 2; /* Handle 32-bit opcodes. */ if ((words[0] & 0x1000) == 0) { - status = (*info->read_memory_func)(memaddr + 2, buffer, 2, info); - if (status != 0) { - (*info->memory_error_func)(status, memaddr + 2, info); + if (!read_u16(&words[1], memaddr + 2, info)) { return -1; } - - if (info->endian == BFD_ENDIAN_BIG) { - words[1] = bfd_getb16(buffer); - } else { - words[1] = bfd_getl16(buffer); - } length = 4; } /* Handle 48-bit opcodes. */ if ((words[0] >> 10) == 0x18) { - status = (*info->read_memory_func)(memaddr + 4, buffer, 2, info); - if (status != 0) { - (*info->memory_error_func)(status, memaddr + 4, info); + if (!read_u16(&words[1], memaddr + 4, info)) { return -1; } - - if (info->endian == BFD_ENDIAN_BIG) { - words[2] = bfd_getb16(buffer); - } else { - words[2] = bfd_getl16(buffer); - } length = 6; } |