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Diffstat (limited to 'arch/x86/lib/insn.c')
-rw-r--r--arch/x86/lib/insn.c58
1 files changed, 22 insertions, 36 deletions
diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c
index 55e371cc69..1bb155a095 100644
--- a/arch/x86/lib/insn.c
+++ b/arch/x86/lib/insn.c
@@ -71,7 +71,7 @@ void insn_init(struct insn *insn, const void *kaddr, int buf_len, int x86_64)
insn->kaddr = kaddr;
insn->end_kaddr = kaddr + buf_len;
insn->next_byte = kaddr;
- insn->x86_64 = x86_64 ? 1 : 0;
+ insn->x86_64 = x86_64;
insn->opnd_bytes = 4;
if (x86_64)
insn->addr_bytes = 8;
@@ -268,11 +268,9 @@ int insn_get_opcode(struct insn *insn)
if (opcode->got)
return 0;
- if (!insn->prefixes.got) {
- ret = insn_get_prefixes(insn);
- if (ret)
- return ret;
- }
+ ret = insn_get_prefixes(insn);
+ if (ret)
+ return ret;
/* Get first opcode */
op = get_next(insn_byte_t, insn);
@@ -339,11 +337,9 @@ int insn_get_modrm(struct insn *insn)
if (modrm->got)
return 0;
- if (!insn->opcode.got) {
- ret = insn_get_opcode(insn);
- if (ret)
- return ret;
- }
+ ret = insn_get_opcode(insn);
+ if (ret)
+ return ret;
if (inat_has_modrm(insn->attr)) {
mod = get_next(insn_byte_t, insn);
@@ -386,11 +382,9 @@ int insn_rip_relative(struct insn *insn)
if (!insn->x86_64)
return 0;
- if (!modrm->got) {
- ret = insn_get_modrm(insn);
- if (ret)
- return 0;
- }
+ ret = insn_get_modrm(insn);
+ if (ret)
+ return 0;
/*
* For rip-relative instructions, the mod field (top 2 bits)
* is zero and the r/m field (bottom 3 bits) is 0x5.
@@ -417,11 +411,9 @@ int insn_get_sib(struct insn *insn)
if (insn->sib.got)
return 0;
- if (!insn->modrm.got) {
- ret = insn_get_modrm(insn);
- if (ret)
- return ret;
- }
+ ret = insn_get_modrm(insn);
+ if (ret)
+ return ret;
if (insn->modrm.nbytes) {
modrm = insn->modrm.bytes[0];
@@ -460,11 +452,9 @@ int insn_get_displacement(struct insn *insn)
if (insn->displacement.got)
return 0;
- if (!insn->sib.got) {
- ret = insn_get_sib(insn);
- if (ret)
- return ret;
- }
+ ret = insn_get_sib(insn);
+ if (ret)
+ return ret;
if (insn->modrm.nbytes) {
/*
@@ -628,11 +618,9 @@ int insn_get_immediate(struct insn *insn)
if (insn->immediate.got)
return 0;
- if (!insn->displacement.got) {
- ret = insn_get_displacement(insn);
- if (ret)
- return ret;
- }
+ ret = insn_get_displacement(insn);
+ if (ret)
+ return ret;
if (inat_has_moffset(insn->attr)) {
if (!__get_moffset(insn))
@@ -703,11 +691,9 @@ int insn_get_length(struct insn *insn)
if (insn->length)
return 0;
- if (!insn->immediate.got) {
- ret = insn_get_immediate(insn);
- if (ret)
- return ret;
- }
+ ret = insn_get_immediate(insn);
+ if (ret)
+ return ret;
insn->length = (unsigned char)((unsigned long)insn->next_byte
- (unsigned long)insn->kaddr);