From: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
_type is enough to know the size.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 44 ++++++++++++++++++++++----------------------
1 files changed, 22 insertions(+), 22 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index fbb2e3a..54f26d9 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -702,9 +702,9 @@ static int do_insn_fetch(struct x86_emulate_ctxt *ctxt,
}
/* Fetch next part of the instruction being emulated. */
-#define insn_fetch(_type, _size, _ctxt) \
+#define insn_fetch(_type, _ctxt) \
({ unsigned long _x; \
- rc = do_insn_fetch(_ctxt, &_x, (_size)); \
+ rc = do_insn_fetch(_ctxt, &_x, sizeof(_type)); \
if (rc != X86EMUL_CONTINUE) \
goto done; \
(_type)_x; \
@@ -901,7 +901,7 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt,
ctxt->modrm_rm = base_reg = (ctxt->rex_prefix & 1) << 3; /* REG.B */
}
- ctxt->modrm = insn_fetch(u8, 1, ctxt);
+ ctxt->modrm = insn_fetch(u8, ctxt);
ctxt->modrm_mod |= (ctxt->modrm & 0xc0) >> 6;
ctxt->modrm_reg |= (ctxt->modrm & 0x38) >> 3;
ctxt->modrm_rm |= (ctxt->modrm & 0x07);
@@ -935,13 +935,13 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt,
switch (ctxt->modrm_mod) {
case 0:
if (ctxt->modrm_rm == 6)
- modrm_ea += insn_fetch(u16, 2, ctxt);
+ modrm_ea += insn_fetch(u16, ctxt);
break;
case 1:
- modrm_ea += insn_fetch(s8, 1, ctxt);
+ modrm_ea += insn_fetch(s8, ctxt);
break;
case 2:
- modrm_ea += insn_fetch(u16, 2, ctxt);
+ modrm_ea += insn_fetch(u16, ctxt);
break;
}
switch (ctxt->modrm_rm) {
@@ -978,13 +978,13 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt,
} else {
/* 32/64-bit ModR/M decode. */
if ((ctxt->modrm_rm & 7) == 4) {
- sib = insn_fetch(u8, 1, ctxt);
+ sib = insn_fetch(u8, ctxt);
index_reg |= (sib >> 3) & 7;
base_reg |= sib & 7;
scale = sib >> 6;
if ((base_reg & 7) == 5 && ctxt->modrm_mod == 0)
- modrm_ea += insn_fetch(s32, 4, ctxt);
+ modrm_ea += insn_fetch(s32, ctxt);
else
modrm_ea += ctxt->regs[base_reg];
if (index_reg != 4)
@@ -997,13 +997,13 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt,
switch (ctxt->modrm_mod) {
case 0:
if (ctxt->modrm_rm == 5)
- modrm_ea += insn_fetch(s32, 4, ctxt);
+ modrm_ea += insn_fetch(s32, ctxt);
break;
case 1:
- modrm_ea += insn_fetch(s8, 1, ctxt);
+ modrm_ea += insn_fetch(s8, ctxt);
break;
case 2:
- modrm_ea += insn_fetch(s32, 4, ctxt);
+ modrm_ea += insn_fetch(s32, ctxt);
break;
}
}
@@ -1020,13 +1020,13 @@ static int decode_abs(struct x86_emulate_ctxt *ctxt,
op->type = OP_MEM;
switch (ctxt->ad_bytes) {
case 2:
- op->addr.mem.ea = insn_fetch(u16, 2, ctxt);
+ op->addr.mem.ea = insn_fetch(u16, ctxt);
break;
case 4:
- op->addr.mem.ea = insn_fetch(u32, 4, ctxt);
+ op->addr.mem.ea = insn_fetch(u32, ctxt);
break;
case 8:
- op->addr.mem.ea = insn_fetch(u64, 8, ctxt);
+ op->addr.mem.ea = insn_fetch(u64, ctxt);
break;
}
done:
@@ -3316,13 +3316,13 @@ static int decode_imm(struct x86_emulate_ctxt *ctxt, struct operand *op,
/* NB. Immediates are sign-extended as necessary. */
switch (op->bytes) {
case 1:
- op->val = insn_fetch(s8, 1, ctxt);
+ op->val = insn_fetch(s8, ctxt);
break;
case 2:
- op->val = insn_fetch(s16, 2, ctxt);
+ op->val = insn_fetch(s16, ctxt);
break;
case 4:
- op->val = insn_fetch(s32, 4, ctxt);
+ op->val = insn_fetch(s32, ctxt);
break;
}
if (!sign_extension) {
@@ -3381,7 +3381,7 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
/* Legacy prefixes. */
for (;;) {
- switch (ctxt->b = insn_fetch(u8, 1, ctxt)) {
+ switch (ctxt->b = insn_fetch(u8, ctxt)) {
case 0x66: /* operand-size override */
op_prefix = true;
/* switch between 2/4 bytes */
@@ -3437,7 +3437,7 @@ done_prefixes:
/* Two-byte opcode? */
if (ctxt->b == 0x0f) {
ctxt->twobyte = 1;
- ctxt->b = insn_fetch(u8, 1, ctxt);
+ ctxt->b = insn_fetch(u8, ctxt);
opcode = twobyte_table[ctxt->b];
}
ctxt->d = opcode.flags;
@@ -3445,13 +3445,13 @@ done_prefixes:
while (ctxt->d & GroupMask) {
switch (ctxt->d & GroupMask) {
case Group:
- ctxt->modrm = insn_fetch(u8, 1, ctxt);
+ ctxt->modrm = insn_fetch(u8, ctxt);
--ctxt->_eip;
goffset = (ctxt->modrm >> 3) & 7;
opcode = opcode.u.group[goffset];
break;
case GroupDual:
- ctxt->modrm = insn_fetch(u8, 1, ctxt);
+ ctxt->modrm = insn_fetch(u8, ctxt);
--ctxt->_eip;
goffset = (ctxt->modrm >> 3) & 7;
if ((ctxt->modrm >> 6) == 3)
@@ -3637,7 +3637,7 @@ done_prefixes:
ctxt->dst.type = OP_IMM;
ctxt->dst.addr.mem.ea = ctxt->_eip;
ctxt->dst.bytes = 1;
- ctxt->dst.val = insn_fetch(u8, 1, ctxt);
+ ctxt->dst.val = insn_fetch(u8, ctxt);
break;
case DstMem:
case DstMem64:
--
1.7.4.1
--
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