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Date: Fri, 27 Feb 2009 12:26:26 +0200
From: Avi Kivity <avi@...hat.com>
To: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 03/37] KVM: ppc: use macros instead of hardcoded literals for instruction decoding
From: Hollis Blanchard <hollisb@...ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@...ibm.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
arch/powerpc/kvm/emulate.c | 93 +++++++++++++++++++++++++++++--------------
1 files changed, 63 insertions(+), 30 deletions(-)
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index d1d38da..a561d6e 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -30,6 +30,39 @@
#include <asm/disassemble.h>
#include "timing.h"
+#define OP_TRAP 3
+
+#define OP_31_XOP_LWZX 23
+#define OP_31_XOP_LBZX 87
+#define OP_31_XOP_STWX 151
+#define OP_31_XOP_STBX 215
+#define OP_31_XOP_STBUX 247
+#define OP_31_XOP_LHZX 279
+#define OP_31_XOP_LHZUX 311
+#define OP_31_XOP_MFSPR 339
+#define OP_31_XOP_STHX 407
+#define OP_31_XOP_STHUX 439
+#define OP_31_XOP_MTSPR 467
+#define OP_31_XOP_DCBI 470
+#define OP_31_XOP_LWBRX 534
+#define OP_31_XOP_TLBSYNC 566
+#define OP_31_XOP_STWBRX 662
+#define OP_31_XOP_LHBRX 790
+#define OP_31_XOP_STHBRX 918
+
+#define OP_LWZ 32
+#define OP_LWZU 33
+#define OP_LBZ 34
+#define OP_LBZU 35
+#define OP_STW 36
+#define OP_STWU 37
+#define OP_STB 38
+#define OP_STBU 39
+#define OP_LHZ 40
+#define OP_LHZU 41
+#define OP_STH 44
+#define OP_STHU 45
+
void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
{
if (vcpu->arch.tcr & TCR_DIE) {
@@ -78,7 +111,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS);
switch (get_op(inst)) {
- case 3: /* trap */
+ case OP_TRAP:
vcpu->arch.esr |= ESR_PTR;
kvmppc_core_queue_program(vcpu);
advance = 0;
@@ -87,31 +120,31 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
case 31:
switch (get_xop(inst)) {
- case 23: /* lwzx */
+ case OP_31_XOP_LWZX:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
break;
- case 87: /* lbzx */
+ case OP_31_XOP_LBZX:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
break;
- case 151: /* stwx */
+ case OP_31_XOP_STWX:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu,
vcpu->arch.gpr[rs],
4, 1);
break;
- case 215: /* stbx */
+ case OP_31_XOP_STBX:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu,
vcpu->arch.gpr[rs],
1, 1);
break;
- case 247: /* stbux */
+ case OP_31_XOP_STBUX:
rs = get_rs(inst);
ra = get_ra(inst);
rb = get_rb(inst);
@@ -126,12 +159,12 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
vcpu->arch.gpr[rs] = ea;
break;
- case 279: /* lhzx */
+ case OP_31_XOP_LHZX:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
break;
- case 311: /* lhzux */
+ case OP_31_XOP_LHZUX:
rt = get_rt(inst);
ra = get_ra(inst);
rb = get_rb(inst);
@@ -144,7 +177,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
vcpu->arch.gpr[ra] = ea;
break;
- case 339: /* mfspr */
+ case OP_31_XOP_MFSPR:
sprn = get_sprn(inst);
rt = get_rt(inst);
@@ -185,7 +218,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
}
break;
- case 407: /* sthx */
+ case OP_31_XOP_STHX:
rs = get_rs(inst);
ra = get_ra(inst);
rb = get_rb(inst);
@@ -195,7 +228,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
2, 1);
break;
- case 439: /* sthux */
+ case OP_31_XOP_STHUX:
rs = get_rs(inst);
ra = get_ra(inst);
rb = get_rb(inst);
@@ -210,7 +243,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
vcpu->arch.gpr[ra] = ea;
break;
- case 467: /* mtspr */
+ case OP_31_XOP_MTSPR:
sprn = get_sprn(inst);
rs = get_rs(inst);
switch (sprn) {
@@ -246,7 +279,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
}
break;
- case 470: /* dcbi */
+ case OP_31_XOP_DCBI:
/* Do nothing. The guest is performing dcbi because
* hardware DMA is not snooped by the dcache, but
* emulated DMA either goes through the dcache as
@@ -254,15 +287,15 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
* coherence. */
break;
- case 534: /* lwbrx */
+ case OP_31_XOP_LWBRX:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0);
break;
- case 566: /* tlbsync */
+ case OP_31_XOP_TLBSYNC:
break;
- case 662: /* stwbrx */
+ case OP_31_XOP_STWBRX:
rs = get_rs(inst);
ra = get_ra(inst);
rb = get_rb(inst);
@@ -272,12 +305,12 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
4, 0);
break;
- case 790: /* lhbrx */
+ case OP_31_XOP_LHBRX:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0);
break;
- case 918: /* sthbrx */
+ case OP_31_XOP_STHBRX:
rs = get_rs(inst);
ra = get_ra(inst);
rb = get_rb(inst);
@@ -293,37 +326,37 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
}
break;
- case 32: /* lwz */
+ case OP_LWZ:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
break;
- case 33: /* lwzu */
+ case OP_LWZU:
ra = get_ra(inst);
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
break;
- case 34: /* lbz */
+ case OP_LBZ:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
break;
- case 35: /* lbzu */
+ case OP_LBZU:
ra = get_ra(inst);
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
break;
- case 36: /* stw */
+ case OP_STW:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
4, 1);
break;
- case 37: /* stwu */
+ case OP_STWU:
ra = get_ra(inst);
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
@@ -331,13 +364,13 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
break;
- case 38: /* stb */
+ case OP_STB:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
1, 1);
break;
- case 39: /* stbu */
+ case OP_STBU:
ra = get_ra(inst);
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
@@ -345,25 +378,25 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
break;
- case 40: /* lhz */
+ case OP_LHZ:
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
break;
- case 41: /* lhzu */
+ case OP_LHZU:
ra = get_ra(inst);
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
break;
- case 44: /* sth */
+ case OP_STH:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
2, 1);
break;
- case 45: /* sthu */
+ case OP_STHU:
ra = get_ra(inst);
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
--
1.6.0.6
--
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