* [PATCH 1/6] KVM: x86 emulator: simplify emulate_2op_SrcV()
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
@ 2011-09-07 13:41 ` Avi Kivity
2011-09-07 13:41 ` [PATCH 2/6] KVM: x86 emulator: simplify emulate_2op_cl() Avi Kivity
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Avi Kivity @ 2011-09-07 13:41 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
emulate_2op_SrcV(), and its siblings, emulate_2op_SrcV_nobyte()
and emulate_2op_SrcB(), all use the same calling conventions
and all get passed exactly the same parameters. Simplify them
by passing just the emulation context.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 90 +++++++++++++++++++++++------------------------
1 files changed, 44 insertions(+), 46 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 0453c07..3f6c6ca 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -205,64 +205,62 @@ struct gprefix {
#define ON64(x)
#endif
-#define ____emulate_2op(_op, _src, _dst, _eflags, _x, _y, _suffix, _dsttype) \
+#define ____emulate_2op(ctxt, _op, _x, _y, _suffix, _dsttype) \
do { \
__asm__ __volatile__ ( \
_PRE_EFLAGS("0", "4", "2") \
_op _suffix " %"_x"3,%1; " \
_POST_EFLAGS("0", "4", "2") \
- : "=m" (_eflags), "+q" (*(_dsttype*)&(_dst).val),\
+ : "=m" ((ctxt)->eflags), \
+ "+q" (*(_dsttype*)&(ctxt)->dst.val), \
"=&r" (_tmp) \
- : _y ((_src).val), "i" (EFLAGS_MASK)); \
+ : _y ((ctxt)->src.val), "i" (EFLAGS_MASK)); \
} while (0)
/* Raw emulation: instruction has two explicit operands. */
-#define __emulate_2op_nobyte(_op,_src,_dst,_eflags,_wx,_wy,_lx,_ly,_qx,_qy) \
+#define __emulate_2op_nobyte(ctxt,_op,_wx,_wy,_lx,_ly,_qx,_qy) \
do { \
unsigned long _tmp; \
\
- switch ((_dst).bytes) { \
+ switch ((ctxt)->dst.bytes) { \
case 2: \
- ____emulate_2op(_op,_src,_dst,_eflags,_wx,_wy,"w",u16);\
+ ____emulate_2op(ctxt,_op,_wx,_wy,"w",u16); \
break; \
case 4: \
- ____emulate_2op(_op,_src,_dst,_eflags,_lx,_ly,"l",u32);\
+ ____emulate_2op(ctxt,_op,_lx,_ly,"l",u32); \
break; \
case 8: \
- ON64(____emulate_2op(_op,_src,_dst,_eflags,_qx,_qy,"q",u64)); \
+ ON64(____emulate_2op(ctxt,_op,_qx,_qy,"q",u64)); \
break; \
} \
} while (0)
-#define __emulate_2op(_op,_src,_dst,_eflags,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy) \
+#define __emulate_2op(ctxt,_op,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy) \
do { \
unsigned long _tmp; \
- switch ((_dst).bytes) { \
+ switch ((ctxt)->dst.bytes) { \
case 1: \
- ____emulate_2op(_op,_src,_dst,_eflags,_bx,_by,"b",u8); \
+ ____emulate_2op(ctxt,_op,_bx,_by,"b",u8); \
break; \
default: \
- __emulate_2op_nobyte(_op, _src, _dst, _eflags, \
+ __emulate_2op_nobyte(ctxt, _op, \
_wx, _wy, _lx, _ly, _qx, _qy); \
break; \
} \
} while (0)
/* Source operand is byte-sized and may be restricted to just %cl. */
-#define emulate_2op_SrcB(_op, _src, _dst, _eflags) \
- __emulate_2op(_op, _src, _dst, _eflags, \
- "b", "c", "b", "c", "b", "c", "b", "c")
+#define emulate_2op_SrcB(ctxt, _op) \
+ __emulate_2op(ctxt, _op, "b", "c", "b", "c", "b", "c", "b", "c")
/* Source operand is byte, word, long or quad sized. */
-#define emulate_2op_SrcV(_op, _src, _dst, _eflags) \
- __emulate_2op(_op, _src, _dst, _eflags, \
- "b", "q", "w", "r", _LO32, "r", "", "r")
+#define emulate_2op_SrcV(ctxt, _op) \
+ __emulate_2op(ctxt, _op, "b", "q", "w", "r", _LO32, "r", "", "r")
/* Source operand is word, long or quad sized. */
-#define emulate_2op_SrcV_nobyte(_op, _src, _dst, _eflags) \
- __emulate_2op_nobyte(_op, _src, _dst, _eflags, \
- "w", "r", _LO32, "r", "", "r")
+#define emulate_2op_SrcV_nobyte(ctxt, _op) \
+ __emulate_2op_nobyte(ctxt, _op, "w", "r", _LO32, "r", "", "r")
/* Instruction has three operands and one operand is stored in ECX register */
#define __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, _suffix, _type) \
@@ -1681,26 +1679,26 @@ static int em_grp2(struct x86_emulate_ctxt *ctxt)
{
switch (ctxt->modrm_reg) {
case 0: /* rol */
- emulate_2op_SrcB("rol", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "rol");
break;
case 1: /* ror */
- emulate_2op_SrcB("ror", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "ror");
break;
case 2: /* rcl */
- emulate_2op_SrcB("rcl", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "rcl");
break;
case 3: /* rcr */
- emulate_2op_SrcB("rcr", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "rcr");
break;
case 4: /* sal/shl */
case 6: /* sal/shl */
- emulate_2op_SrcB("sal", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "sal");
break;
case 5: /* shr */
- emulate_2op_SrcB("shr", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "shr");
break;
case 7: /* sar */
- emulate_2op_SrcB("sar", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcB(ctxt, "sar");
break;
}
return X86EMUL_CONTINUE;
@@ -1714,7 +1712,7 @@ static int em_grp3(struct x86_emulate_ctxt *ctxt)
switch (ctxt->modrm_reg) {
case 0 ... 1: /* test */
- emulate_2op_SrcV("test", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "test");
break;
case 2: /* not */
ctxt->dst.val = ~ctxt->dst.val;
@@ -2459,7 +2457,7 @@ static int em_das(struct x86_emulate_ctxt *ctxt)
ctxt->src.type = OP_IMM;
ctxt->src.val = 0;
ctxt->src.bytes = 1;
- emulate_2op_SrcV("or", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "or");
ctxt->eflags &= ~(X86_EFLAGS_AF | X86_EFLAGS_CF);
if (cf)
ctxt->eflags |= X86_EFLAGS_CF;
@@ -2509,49 +2507,49 @@ static int em_ret_near_imm(struct x86_emulate_ctxt *ctxt)
static int em_add(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("add", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "add");
return X86EMUL_CONTINUE;
}
static int em_or(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("or", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "or");
return X86EMUL_CONTINUE;
}
static int em_adc(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("adc", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "adc");
return X86EMUL_CONTINUE;
}
static int em_sbb(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("sbb", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "sbb");
return X86EMUL_CONTINUE;
}
static int em_and(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("and", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "and");
return X86EMUL_CONTINUE;
}
static int em_sub(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("sub", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "sub");
return X86EMUL_CONTINUE;
}
static int em_xor(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("xor", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "xor");
return X86EMUL_CONTINUE;
}
static int em_cmp(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("cmp", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "cmp");
/* Disable writeback. */
ctxt->dst.type = OP_NONE;
return X86EMUL_CONTINUE;
@@ -2559,7 +2557,7 @@ static int em_cmp(struct x86_emulate_ctxt *ctxt)
static int em_test(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV("test", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "test");
return X86EMUL_CONTINUE;
}
@@ -2577,7 +2575,7 @@ static int em_xchg(struct x86_emulate_ctxt *ctxt)
static int em_imul(struct x86_emulate_ctxt *ctxt)
{
- emulate_2op_SrcV_nobyte("imul", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV_nobyte(ctxt, "imul");
return X86EMUL_CONTINUE;
}
@@ -4121,7 +4119,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
ctxt->dst.type = OP_NONE;
/* only subword offset */
ctxt->src.val &= (ctxt->dst.bytes << 3) - 1;
- emulate_2op_SrcV_nobyte("bt", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV_nobyte(ctxt, "bt");
break;
case 0xa4: /* shld imm8, r, r/m */
case 0xa5: /* shld cl, r, r/m */
@@ -4135,7 +4133,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
break;
case 0xab:
bts: /* bts */
- emulate_2op_SrcV_nobyte("bts", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV_nobyte(ctxt, "bts");
break;
case 0xac: /* shrd imm8, r, r/m */
case 0xad: /* shrd cl, r, r/m */
@@ -4150,7 +4148,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
*/
ctxt->src.orig_val = ctxt->src.val;
ctxt->src.val = ctxt->regs[VCPU_REGS_RAX];
- emulate_2op_SrcV("cmp", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "cmp");
if (ctxt->eflags & EFLG_ZF) {
/* Success: write back to memory. */
ctxt->dst.val = ctxt->src.orig_val;
@@ -4165,7 +4163,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
break;
case 0xb3:
btr: /* btr */
- emulate_2op_SrcV_nobyte("btr", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV_nobyte(ctxt, "btr");
break;
case 0xb4: /* lfs */
rc = emulate_load_segment(ctxt, VCPU_SREG_FS);
@@ -4192,7 +4190,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
break;
case 0xbb:
btc: /* btc */
- emulate_2op_SrcV_nobyte("btc", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV_nobyte(ctxt, "btc");
break;
case 0xbc: { /* bsf */
u8 zf;
@@ -4224,7 +4222,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
(s16) ctxt->src.val;
break;
case 0xc0 ... 0xc1: /* xadd */
- emulate_2op_SrcV("add", ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_SrcV(ctxt, "add");
/* Write back the register source. */
ctxt->src.val = ctxt->dst.orig_val;
write_register_operand(&ctxt->src);
--
1.7.6.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH 2/6] KVM: x86 emulator: simplify emulate_2op_cl()
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
2011-09-07 13:41 ` [PATCH 1/6] KVM: x86 emulator: simplify emulate_2op_SrcV() Avi Kivity
@ 2011-09-07 13:41 ` Avi Kivity
2011-09-07 13:41 ` [PATCH 3/6] " Avi Kivity
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Avi Kivity @ 2011-09-07 13:41 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
emulate_2op_cl() is always called with the same parameters. Simplify
by passing just the emulation context.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 33 +++++++++++++++------------------
1 files changed, 15 insertions(+), 18 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 3f6c6ca..1bc9e24 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -263,40 +263,37 @@ struct gprefix {
__emulate_2op_nobyte(ctxt, _op, "w", "r", _LO32, "r", "", "r")
/* Instruction has three operands and one operand is stored in ECX register */
-#define __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, _suffix, _type) \
+#define __emulate_2op_cl(_op, ctxt, _suffix, _type) \
do { \
unsigned long _tmp; \
- _type _clv = (_cl).val; \
- _type _srcv = (_src).val; \
- _type _dstv = (_dst).val; \
+ _type _clv = (ctxt)->src2.val; \
+ _type _srcv = (ctxt)->src.val; \
+ _type _dstv = (ctxt)->dst.val; \
\
__asm__ __volatile__ ( \
_PRE_EFLAGS("0", "5", "2") \
_op _suffix " %4,%1 \n" \
_POST_EFLAGS("0", "5", "2") \
- : "=m" (_eflags), "+r" (_dstv), "=&r" (_tmp) \
+ : "=m" ((ctxt)->eflags), "+r" (_dstv), "=&r" (_tmp) \
: "c" (_clv) , "r" (_srcv), "i" (EFLAGS_MASK) \
); \
\
- (_cl).val = (unsigned long) _clv; \
- (_src).val = (unsigned long) _srcv; \
- (_dst).val = (unsigned long) _dstv; \
+ (ctxt)->src2.val = (unsigned long) _clv; \
+ (ctxt)->src2.val = (unsigned long) _srcv; \
+ (ctxt)->dst.val = (unsigned long) _dstv; \
} while (0)
-#define emulate_2op_cl(_op, _cl, _src, _dst, _eflags) \
+#define emulate_2op_cl(ctxt, _op) \
do { \
- switch ((_dst).bytes) { \
+ switch ((ctxt)->dst.bytes) { \
case 2: \
- __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, \
- "w", unsigned short); \
+ __emulate_2op_cl(_op, ctxt, "w", u16); \
break; \
case 4: \
- __emulate_2op_cl(_op, _cl, _src, _dst, _eflags, \
- "l", unsigned int); \
+ __emulate_2op_cl(_op, ctxt, "l", u32); \
break; \
case 8: \
- ON64(__emulate_2op_cl(_op, _cl, _src, _dst, _eflags, \
- "q", unsigned long)); \
+ ON64(__emulate_2op_cl(_op, ctxt, "q", ulong)); \
break; \
} \
} while (0)
@@ -4123,7 +4120,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
break;
case 0xa4: /* shld imm8, r, r/m */
case 0xa5: /* shld cl, r, r/m */
- emulate_2op_cl("shld", ctxt->src2, ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_cl(ctxt, "shld");
break;
case 0xa8: /* push gs */
rc = emulate_push_sreg(ctxt, VCPU_SREG_GS);
@@ -4137,7 +4134,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
break;
case 0xac: /* shrd imm8, r, r/m */
case 0xad: /* shrd cl, r, r/m */
- emulate_2op_cl("shrd", ctxt->src2, ctxt->src, ctxt->dst, ctxt->eflags);
+ emulate_2op_cl(ctxt, "shrd");
break;
case 0xae: /* clflush */
break;
--
1.7.6.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH 3/6] KVM: x86 emulator: simplify emulate_2op_cl()
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
2011-09-07 13:41 ` [PATCH 1/6] KVM: x86 emulator: simplify emulate_2op_SrcV() Avi Kivity
2011-09-07 13:41 ` [PATCH 2/6] KVM: x86 emulator: simplify emulate_2op_cl() Avi Kivity
@ 2011-09-07 13:41 ` Avi Kivity
2011-09-07 13:41 ` [PATCH 4/6] KVM: x86 emulator: simplify emulate_1op() Avi Kivity
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Avi Kivity @ 2011-09-07 13:41 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
emulate_2op_cl() is always called with the same parameters. Simplify
by passing just the emulation context.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 1bc9e24..70c9f11 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -263,7 +263,7 @@ struct gprefix {
__emulate_2op_nobyte(ctxt, _op, "w", "r", _LO32, "r", "", "r")
/* Instruction has three operands and one operand is stored in ECX register */
-#define __emulate_2op_cl(_op, ctxt, _suffix, _type) \
+#define __emulate_2op_cl(ctxt, _op, _suffix, _type) \
do { \
unsigned long _tmp; \
_type _clv = (ctxt)->src2.val; \
@@ -287,13 +287,13 @@ struct gprefix {
do { \
switch ((ctxt)->dst.bytes) { \
case 2: \
- __emulate_2op_cl(_op, ctxt, "w", u16); \
+ __emulate_2op_cl(ctxt, _op, "w", u16); \
break; \
case 4: \
- __emulate_2op_cl(_op, ctxt, "l", u32); \
+ __emulate_2op_cl(ctxt, _op, "l", u32); \
break; \
case 8: \
- ON64(__emulate_2op_cl(_op, ctxt, "q", ulong)); \
+ ON64(__emulate_2op_cl(ctxt, _op, "q", ulong)); \
break; \
} \
} while (0)
--
1.7.6.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH 4/6] KVM: x86 emulator: simplify emulate_1op()
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
` (2 preceding siblings ...)
2011-09-07 13:41 ` [PATCH 3/6] " Avi Kivity
@ 2011-09-07 13:41 ` Avi Kivity
2011-09-07 13:41 ` [PATCH 5/6] KVM: x86 emulator: merge the two emulate_1op_rax_rdx implementations Avi Kivity
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Avi Kivity @ 2011-09-07 13:41 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
emulate_1op() is always called with the same parameters. Simplify
by passing just the emulation context.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 26 +++++++++++++-------------
1 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 70c9f11..a0dd13f 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -298,7 +298,7 @@ struct gprefix {
} \
} while (0)
-#define __emulate_1op(_op, _dst, _eflags, _suffix) \
+#define __emulate_1op(ctxt, _op, _suffix) \
do { \
unsigned long _tmp; \
\
@@ -306,19 +306,19 @@ struct gprefix {
_PRE_EFLAGS("0", "3", "2") \
_op _suffix " %1; " \
_POST_EFLAGS("0", "3", "2") \
- : "=m" (_eflags), "+m" ((_dst).val), \
+ : "=m" ((ctxt)->eflags), "+m" ((ctxt)->dst.val), \
"=&r" (_tmp) \
: "i" (EFLAGS_MASK)); \
} while (0)
/* Instruction has only one explicit operand (no source operand). */
-#define emulate_1op(_op, _dst, _eflags) \
+#define emulate_1op(ctxt, _op) \
do { \
- switch ((_dst).bytes) { \
- case 1: __emulate_1op(_op, _dst, _eflags, "b"); break; \
- case 2: __emulate_1op(_op, _dst, _eflags, "w"); break; \
- case 4: __emulate_1op(_op, _dst, _eflags, "l"); break; \
- case 8: ON64(__emulate_1op(_op, _dst, _eflags, "q")); break; \
+ switch ((ctxt)->dst.bytes) { \
+ case 1: __emulate_1op(ctxt, _op, "b"); break; \
+ case 2: __emulate_1op(ctxt, _op, "w"); break; \
+ case 4: __emulate_1op(ctxt, _op, "l"); break; \
+ case 8: ON64(__emulate_1op(ctxt, _op, "q")); break; \
} \
} while (0)
@@ -1715,7 +1715,7 @@ static int em_grp3(struct x86_emulate_ctxt *ctxt)
ctxt->dst.val = ~ctxt->dst.val;
break;
case 3: /* neg */
- emulate_1op("neg", ctxt->dst, ctxt->eflags);
+ emulate_1op(ctxt, "neg");
break;
case 4: /* mul */
emulate_1op_rax_rdx("mul", ctxt->src, *rax, *rdx, ctxt->eflags);
@@ -1745,10 +1745,10 @@ static int em_grp45(struct x86_emulate_ctxt *ctxt)
switch (ctxt->modrm_reg) {
case 0: /* inc */
- emulate_1op("inc", ctxt->dst, ctxt->eflags);
+ emulate_1op(ctxt, "inc");
break;
case 1: /* dec */
- emulate_1op("dec", ctxt->dst, ctxt->eflags);
+ emulate_1op(ctxt, "dec");
break;
case 2: /* call near abs */ {
long int old_eip;
@@ -3849,10 +3849,10 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
rc = emulate_pop_sreg(ctxt, VCPU_SREG_DS);
break;
case 0x40 ... 0x47: /* inc r16/r32 */
- emulate_1op("inc", ctxt->dst, ctxt->eflags);
+ emulate_1op(ctxt, "inc");
break;
case 0x48 ... 0x4f: /* dec r16/r32 */
- emulate_1op("dec", ctxt->dst, ctxt->eflags);
+ emulate_1op(ctxt, "dec");
break;
case 0x63: /* movsxd */
if (ctxt->mode != X86EMUL_MODE_PROT64)
--
1.7.6.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH 5/6] KVM: x86 emulator: merge the two emulate_1op_rax_rdx implementations
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
` (3 preceding siblings ...)
2011-09-07 13:41 ` [PATCH 4/6] KVM: x86 emulator: simplify emulate_1op() Avi Kivity
@ 2011-09-07 13:41 ` Avi Kivity
2011-09-07 13:41 ` [PATCH 6/6] KVM: x86 emulator: simplify emulate_1op_rax_rdx() Avi Kivity
2011-09-09 16:20 ` [PATCH 0/6] Some emulator cleanups Marcelo Tosatti
6 siblings, 0 replies; 8+ messages in thread
From: Avi Kivity @ 2011-09-07 13:41 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
We have two emulate-with-extended-accumulator implementations: once
which expect traps (_ex) and one which doesn't (plain). Drop the
plain implementation and always use the one which expects traps;
it will simply return 0 in the _ex argument and we can happily ignore
it.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 64 +++++++++++------------------------------------
1 files changed, 15 insertions(+), 49 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index a0dd13f..cb8dcb7 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -322,21 +322,7 @@ struct gprefix {
} \
} while (0)
-#define __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _suffix) \
- do { \
- unsigned long _tmp; \
- \
- __asm__ __volatile__ ( \
- _PRE_EFLAGS("0", "4", "1") \
- _op _suffix " %5; " \
- _POST_EFLAGS("0", "4", "1") \
- : "=m" (_eflags), "=&r" (_tmp), \
- "+a" (_rax), "+d" (_rdx) \
- : "i" (EFLAGS_MASK), "m" ((_src).val), \
- "a" (_rax), "d" (_rdx)); \
- } while (0)
-
-#define __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, _eflags, _suffix, _ex) \
+#define __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _suffix, _ex) \
do { \
unsigned long _tmp; \
\
@@ -358,46 +344,24 @@ struct gprefix {
} while (0)
/* instruction has only one source operand, destination is implicit (e.g. mul, div, imul, idiv) */
-#define emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags) \
+#define emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _ex) \
do { \
switch((_src).bytes) { \
case 1: \
__emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "b"); \
+ _eflags, "b", _ex); \
break; \
case 2: \
__emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "w"); \
+ _eflags, "w", _ex); \
break; \
case 4: \
__emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "l"); \
- break; \
- case 8: \
- ON64(__emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "q")); \
- break; \
- } \
- } while (0)
-
-#define emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, _eflags, _ex) \
- do { \
- switch((_src).bytes) { \
- case 1: \
- __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \
- _eflags, "b", _ex); \
- break; \
- case 2: \
- __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \
- _eflags, "w", _ex); \
- break; \
- case 4: \
- __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \
- _eflags, "l", _ex); \
+ _eflags, "l", _ex); \
break; \
case 8: ON64( \
- __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \
- _eflags, "q", _ex)); \
+ __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
+ _eflags, "q", _ex)); \
break; \
} \
} while (0)
@@ -1718,18 +1682,20 @@ static int em_grp3(struct x86_emulate_ctxt *ctxt)
emulate_1op(ctxt, "neg");
break;
case 4: /* mul */
- emulate_1op_rax_rdx("mul", ctxt->src, *rax, *rdx, ctxt->eflags);
+ emulate_1op_rax_rdx("mul", ctxt->src, *rax, *rdx,
+ ctxt->eflags, de);
break;
case 5: /* imul */
- emulate_1op_rax_rdx("imul", ctxt->src, *rax, *rdx, ctxt->eflags);
+ emulate_1op_rax_rdx("imul", ctxt->src, *rax, *rdx,
+ ctxt->eflags, de);
break;
case 6: /* div */
- emulate_1op_rax_rdx_ex("div", ctxt->src, *rax, *rdx,
- ctxt->eflags, de);
+ emulate_1op_rax_rdx("div", ctxt->src, *rax, *rdx,
+ ctxt->eflags, de);
break;
case 7: /* idiv */
- emulate_1op_rax_rdx_ex("idiv", ctxt->src, *rax, *rdx,
- ctxt->eflags, de);
+ emulate_1op_rax_rdx("idiv", ctxt->src, *rax, *rdx,
+ ctxt->eflags, de);
break;
default:
return X86EMUL_UNHANDLEABLE;
--
1.7.6.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH 6/6] KVM: x86 emulator: simplify emulate_1op_rax_rdx()
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
` (4 preceding siblings ...)
2011-09-07 13:41 ` [PATCH 5/6] KVM: x86 emulator: merge the two emulate_1op_rax_rdx implementations Avi Kivity
@ 2011-09-07 13:41 ` Avi Kivity
2011-09-09 16:20 ` [PATCH 0/6] Some emulator cleanups Marcelo Tosatti
6 siblings, 0 replies; 8+ messages in thread
From: Avi Kivity @ 2011-09-07 13:41 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
emulate_1op_rax_rdx() is always called with the same parameters. Simplify
by passing just the emulation context.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 42 +++++++++++++++++-------------------------
1 files changed, 17 insertions(+), 25 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index cb8dcb7..c636ee7 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -322,9 +322,11 @@ struct gprefix {
} \
} while (0)
-#define __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _suffix, _ex) \
+#define __emulate_1op_rax_rdx(ctxt, _op, _suffix, _ex) \
do { \
unsigned long _tmp; \
+ ulong *rax = &(ctxt)->regs[VCPU_REGS_RAX]; \
+ ulong *rdx = &(ctxt)->regs[VCPU_REGS_RDX]; \
\
__asm__ __volatile__ ( \
_PRE_EFLAGS("0", "5", "1") \
@@ -337,31 +339,27 @@ struct gprefix {
"jmp 2b \n\t" \
".popsection \n\t" \
_ASM_EXTABLE(1b, 3b) \
- : "=m" (_eflags), "=&r" (_tmp), \
- "+a" (_rax), "+d" (_rdx), "+qm"(_ex) \
- : "i" (EFLAGS_MASK), "m" ((_src).val), \
- "a" (_rax), "d" (_rdx)); \
+ : "=m" ((ctxt)->eflags), "=&r" (_tmp), \
+ "+a" (*rax), "+d" (*rdx), "+qm"(_ex) \
+ : "i" (EFLAGS_MASK), "m" ((ctxt)->src.val), \
+ "a" (*rax), "d" (*rdx)); \
} while (0)
/* instruction has only one source operand, destination is implicit (e.g. mul, div, imul, idiv) */
-#define emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _ex) \
+#define emulate_1op_rax_rdx(ctxt, _op, _ex) \
do { \
- switch((_src).bytes) { \
+ switch((ctxt)->src.bytes) { \
case 1: \
- __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "b", _ex); \
+ __emulate_1op_rax_rdx(ctxt, _op, "b", _ex); \
break; \
case 2: \
- __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "w", _ex); \
+ __emulate_1op_rax_rdx(ctxt, _op, "w", _ex); \
break; \
case 4: \
- __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "l", _ex); \
+ __emulate_1op_rax_rdx(ctxt, _op, "l", _ex); \
break; \
case 8: ON64( \
- __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \
- _eflags, "q", _ex)); \
+ __emulate_1op_rax_rdx(ctxt, _op, "q", _ex)); \
break; \
} \
} while (0)
@@ -1667,8 +1665,6 @@ static int em_grp2(struct x86_emulate_ctxt *ctxt)
static int em_grp3(struct x86_emulate_ctxt *ctxt)
{
- unsigned long *rax = &ctxt->regs[VCPU_REGS_RAX];
- unsigned long *rdx = &ctxt->regs[VCPU_REGS_RDX];
u8 de = 0;
switch (ctxt->modrm_reg) {
@@ -1682,20 +1678,16 @@ static int em_grp3(struct x86_emulate_ctxt *ctxt)
emulate_1op(ctxt, "neg");
break;
case 4: /* mul */
- emulate_1op_rax_rdx("mul", ctxt->src, *rax, *rdx,
- ctxt->eflags, de);
+ emulate_1op_rax_rdx(ctxt, "mul", de);
break;
case 5: /* imul */
- emulate_1op_rax_rdx("imul", ctxt->src, *rax, *rdx,
- ctxt->eflags, de);
+ emulate_1op_rax_rdx(ctxt, "imul", de);
break;
case 6: /* div */
- emulate_1op_rax_rdx("div", ctxt->src, *rax, *rdx,
- ctxt->eflags, de);
+ emulate_1op_rax_rdx(ctxt, "div", de);
break;
case 7: /* idiv */
- emulate_1op_rax_rdx("idiv", ctxt->src, *rax, *rdx,
- ctxt->eflags, de);
+ emulate_1op_rax_rdx(ctxt, "idiv", de);
break;
default:
return X86EMUL_UNHANDLEABLE;
--
1.7.6.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH 0/6] Some emulator cleanups
2011-09-07 13:41 [PATCH 0/6] Some emulator cleanups Avi Kivity
` (5 preceding siblings ...)
2011-09-07 13:41 ` [PATCH 6/6] KVM: x86 emulator: simplify emulate_1op_rax_rdx() Avi Kivity
@ 2011-09-09 16:20 ` Marcelo Tosatti
6 siblings, 0 replies; 8+ messages in thread
From: Marcelo Tosatti @ 2011-09-09 16:20 UTC (permalink / raw)
To: Avi Kivity; +Cc: kvm
On Wed, Sep 07, 2011 at 04:41:34PM +0300, Avi Kivity wrote:
> Some mindless emulator cleanups while waiting for autotest.
>
> Avi Kivity (6):
> KVM: x86 emulator: simplify emulate_2op_SrcV()
> KVM: x86 emulator: simplify emulate_2op_cl()
> KVM: x86 emulator: simplify emulate_2op_cl()
> KVM: x86 emulator: simplify emulate_1op()
> KVM: x86 emulator: merge the two emulate_1op_rax_rdx implementations
> KVM: x86 emulator: simplify emulate_1op_rax_rdx()
>
> arch/x86/kvm/emulate.c | 225 +++++++++++++++++++-----------------------------
> 1 files changed, 89 insertions(+), 136 deletions(-)
Applied, thanks.
^ permalink raw reply [flat|nested] 8+ messages in thread