From: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
ADD, OR, ADC, SBB, AND, SUB, XOR, CMP are converted using a new macro
I6ALU(_f, _e).
CMPS, SCAS will be converted later.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 151 ++++++++++++++++++++++++++++--------------------
1 files changed, 88 insertions(+), 63 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 14c5ad5..bd9572a 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2325,6 +2325,70 @@ static int em_mov(struct x86_emulate_ctxt *ctxt)
return X86EMUL_CONTINUE;
}
+static int em_add(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("add", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_or(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("or", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_adc(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("adc", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_sbb(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("sbb", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_and(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("and", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_sub(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("sub", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_xor(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("xor", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
+static int em_cmp(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c = &ctxt->decode;
+
+ emulate_2op_SrcV("cmp", c->src, c->dst, ctxt->eflags);
+ return X86EMUL_CONTINUE;
+}
+
#define D(_y) { .flags = (_y) }
#define N D(0)
#define G(_f, _g) { .flags = ((_f) | Group), .u.group = (_g) }
@@ -2337,10 +2401,20 @@ static int em_mov(struct x86_emulate_ctxt *ctxt)
#define D6ALU(_f) D2bv((_f) | DstMem | SrcReg | ModRM), \
D2bv(((_f) | DstReg | SrcMem | ModRM) & ~Lock), \
D2bv(((_f) & ~Lock) | DstAcc | SrcImm)
+#define I6ALU(_f, _e) I2bv((_f) | DstMem | SrcReg | ModRM, _e), \
+ I2bv(((_f) | DstReg | SrcMem | ModRM) & ~Lock, _e), \
+ I2bv(((_f) & ~Lock) | DstAcc | SrcImm, _e)
static struct opcode group1[] = {
- X7(D(Lock)), N
+ I(Lock, em_add),
+ I(Lock, em_or),
+ I(Lock, em_adc),
+ I(Lock, em_sbb),
+ I(Lock, em_and),
+ I(Lock, em_sub),
+ I(Lock, em_xor),
+ I(0, em_cmp)
};
static struct opcode group1A[] = {
@@ -2396,25 +2470,25 @@ static struct opcode group11[] = {
static struct opcode opcode_table[256] = {
/* 0x00 - 0x07 */
- D6ALU(Lock),
+ I6ALU(Lock, em_add),
D(ImplicitOps | Stack | No64), D(ImplicitOps | Stack | No64),
/* 0x08 - 0x0F */
- D6ALU(Lock),
+ I6ALU(Lock, em_or),
D(ImplicitOps | Stack | No64), N,
/* 0x10 - 0x17 */
- D6ALU(Lock),
+ I6ALU(Lock, em_adc),
D(ImplicitOps | Stack | No64), D(ImplicitOps | Stack | No64),
/* 0x18 - 0x1F */
- D6ALU(Lock),
+ I6ALU(Lock, em_sbb),
D(ImplicitOps | Stack | No64), D(ImplicitOps | Stack | No64),
/* 0x20 - 0x27 */
- D6ALU(Lock), N, N,
+ I6ALU(Lock, em_and), N, N,
/* 0x28 - 0x2F */
- D6ALU(Lock), N, I(ByteOp | DstAcc | No64, em_das),
+ I6ALU(Lock, em_sub), N, I(ByteOp | DstAcc | No64, em_das),
/* 0x30 - 0x37 */
- D6ALU(Lock), N, N,
+ I6ALU(Lock, em_xor), N, N,
/* 0x38 - 0x3F */
- D6ALU(0), N, N,
+ I6ALU(0, em_cmp), N, N,
/* 0x40 - 0x4F */
X16(D(DstReg)),
/* 0x50 - 0x57 */
@@ -2568,6 +2642,7 @@ static struct opcode twobyte_table[256] = {
#undef D2bv
#undef I2bv
#undef D6ALU
+#undef I6ALU
static unsigned imm_size(struct decode_cache *c)
{
@@ -3034,59 +3109,27 @@ special_insn:
goto twobyte_insn;
switch (c->b) {
- case 0x00 ... 0x05:
- add: /* add */
- emulate_2op_SrcV("add", c->src, c->dst, ctxt->eflags);
- break;
case 0x06: /* push es */
emulate_push_sreg(ctxt, ops, VCPU_SREG_ES);
break;
case 0x07: /* pop es */
rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_ES);
break;
- case 0x08 ... 0x0d:
- or: /* or */
- emulate_2op_SrcV("or", c->src, c->dst, ctxt->eflags);
- break;
case 0x0e: /* push cs */
emulate_push_sreg(ctxt, ops, VCPU_SREG_CS);
break;
- case 0x10 ... 0x15:
- adc: /* adc */
- emulate_2op_SrcV("adc", c->src, c->dst, ctxt->eflags);
- break;
case 0x16: /* push ss */
emulate_push_sreg(ctxt, ops, VCPU_SREG_SS);
break;
case 0x17: /* pop ss */
rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_SS);
break;
- case 0x18 ... 0x1d:
- sbb: /* sbb */
- emulate_2op_SrcV("sbb", c->src, c->dst, ctxt->eflags);
- break;
case 0x1e: /* push ds */
emulate_push_sreg(ctxt, ops, VCPU_SREG_DS);
break;
case 0x1f: /* pop ds */
rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_DS);
break;
- case 0x20 ... 0x25:
- and: /* and */
- emulate_2op_SrcV("and", c->src, c->dst, ctxt->eflags);
- break;
- case 0x28 ... 0x2d:
- sub: /* sub */
- emulate_2op_SrcV("sub", c->src, c->dst, ctxt->eflags);
- break;
- case 0x30 ... 0x35:
- xor: /* xor */
- emulate_2op_SrcV("xor", c->src, c->dst, ctxt->eflags);
- break;
- case 0x38 ... 0x3d:
- cmp: /* cmp */
- emulate_2op_SrcV("cmp", c->src, c->dst, ctxt->eflags);
- break;
case 0x40 ... 0x47: /* inc r16/r32 */
emulate_1op("inc", c->dst, ctxt->eflags);
break;
@@ -3121,26 +3164,6 @@ special_insn:
if (test_cc(c->b, ctxt->eflags))
jmp_rel(c, c->src.val);
break;
- case 0x80 ... 0x83: /* Grp1 */
- switch (c->modrm_reg) {
- case 0:
- goto add;
- case 1:
- goto or;
- case 2:
- goto adc;
- case 3:
- goto sbb;
- case 4:
- goto and;
- case 5:
- goto sub;
- case 6:
- goto xor;
- case 7:
- goto cmp;
- }
- break;
case 0x84 ... 0x85:
test:
emulate_2op_SrcV("test", c->src, c->dst, ctxt->eflags);
@@ -3212,11 +3235,13 @@ special_insn:
break;
case 0xa6 ... 0xa7: /* cmps */
c->dst.type = OP_NONE; /* Disable writeback. */
- goto cmp;
+ emulate_2op_SrcV("cmp", c->src, c->dst, ctxt->eflags);
+ break;
case 0xa8 ... 0xa9: /* test ax, imm */
goto test;
case 0xae ... 0xaf: /* scas */
- goto cmp;
+ emulate_2op_SrcV("cmp", c->src, c->dst, ctxt->eflags);
+ break;
case 0xc0 ... 0xc1:
emulate_grp2(ctxt);
break;
--
1.7.1
--
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