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Diffstat (limited to 'arch/powerpc/kvm/emulate_loadstore.c')
-rw-r--r--arch/powerpc/kvm/emulate_loadstore.c99
1 files changed, 36 insertions, 63 deletions
diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c
index f91b1309a0a8..ec60c7979718 100644
--- a/arch/powerpc/kvm/emulate_loadstore.c
+++ b/arch/powerpc/kvm/emulate_loadstore.c
@@ -1,16 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright IBM Corp. 2007
* Copyright 2011 Freescale Semiconductor, Inc.
@@ -39,7 +28,7 @@
static bool kvmppc_check_fp_disabled(struct kvm_vcpu *vcpu)
{
if (!(kvmppc_get_msr(vcpu) & MSR_FP)) {
- kvmppc_core_queue_fpunavail(vcpu);
+ kvmppc_core_queue_fpunavail(vcpu, kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
return true;
}
@@ -51,7 +40,7 @@ static bool kvmppc_check_fp_disabled(struct kvm_vcpu *vcpu)
static bool kvmppc_check_vsx_disabled(struct kvm_vcpu *vcpu)
{
if (!(kvmppc_get_msr(vcpu) & MSR_VSX)) {
- kvmppc_core_queue_vsx_unavail(vcpu);
+ kvmppc_core_queue_vsx_unavail(vcpu, kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
return true;
}
@@ -63,7 +52,7 @@ static bool kvmppc_check_vsx_disabled(struct kvm_vcpu *vcpu)
static bool kvmppc_check_altivec_disabled(struct kvm_vcpu *vcpu)
{
if (!(kvmppc_get_msr(vcpu) & MSR_VEC)) {
- kvmppc_core_queue_vec_unavail(vcpu);
+ kvmppc_core_queue_vec_unavail(vcpu, kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
return true;
}
@@ -82,11 +71,8 @@ static bool kvmppc_check_altivec_disabled(struct kvm_vcpu *vcpu)
*/
int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
{
- struct kvm_run *run = vcpu->run;
- u32 inst;
- int ra, rs, rt;
+ ppc_inst_t inst;
enum emulation_result emulated = EMULATE_FAIL;
- int advance = 1;
struct instruction_op op;
/* this default type might be overwritten by subcategories */
@@ -96,16 +82,6 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (emulated != EMULATE_DONE)
return emulated;
- ra = get_ra(inst);
- rs = get_rs(inst);
- rt = get_rt(inst);
-
- /*
- * if mmio_vsx_tx_sx_enabled == 0, copy data between
- * VSR[0..31] and memory
- * if mmio_vsx_tx_sx_enabled == 1, copy data between
- * VSR[32..63] and memory
- */
vcpu->arch.mmio_vsx_copy_nums = 0;
vcpu->arch.mmio_vsx_offset = 0;
vcpu->arch.mmio_copy_type = KVMPPC_VSX_COPY_NONE;
@@ -116,24 +92,26 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
vcpu->arch.mmio_host_swabbed = 0;
emulated = EMULATE_FAIL;
- vcpu->arch.regs.msr = vcpu->arch.shared->msr;
+ vcpu->arch.regs.msr = kvmppc_get_msr(vcpu);
if (analyse_instr(&op, &vcpu->arch.regs, inst) == 0) {
int type = op.type & INSTR_TYPE_MASK;
int size = GETSIZE(op.type);
+ vcpu->mmio_is_write = OP_IS_STORE(type);
+
switch (type) {
case LOAD: {
int instr_byte_swap = op.type & BYTEREV;
if (op.type & SIGNEXT)
- emulated = kvmppc_handle_loads(run, vcpu,
+ emulated = kvmppc_handle_loads(vcpu,
op.reg, size, !instr_byte_swap);
else
- emulated = kvmppc_handle_load(run, vcpu,
+ emulated = kvmppc_handle_load(vcpu,
op.reg, size, !instr_byte_swap);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
- kvmppc_set_gpr(vcpu, op.update_reg, op.ea);
+ kvmppc_set_gpr(vcpu, op.update_reg, vcpu->arch.vaddr_accessed);
break;
}
@@ -146,14 +124,14 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
vcpu->arch.mmio_sp64_extend = 1;
if (op.type & SIGNEXT)
- emulated = kvmppc_handle_loads(run, vcpu,
+ emulated = kvmppc_handle_loads(vcpu,
KVM_MMIO_REG_FPR|op.reg, size, 1);
else
- emulated = kvmppc_handle_load(run, vcpu,
+ emulated = kvmppc_handle_load(vcpu,
KVM_MMIO_REG_FPR|op.reg, size, 1);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
- kvmppc_set_gpr(vcpu, op.update_reg, op.ea);
+ kvmppc_set_gpr(vcpu, op.update_reg, vcpu->arch.vaddr_accessed);
break;
#endif
@@ -186,12 +164,12 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (size == 16) {
vcpu->arch.mmio_vmx_copy_nums = 2;
- emulated = kvmppc_handle_vmx_load(run,
- vcpu, KVM_MMIO_REG_VMX|op.reg,
+ emulated = kvmppc_handle_vmx_load(vcpu,
+ KVM_MMIO_REG_VMX|op.reg,
8, 1);
} else {
vcpu->arch.mmio_vmx_copy_nums = 1;
- emulated = kvmppc_handle_vmx_load(run, vcpu,
+ emulated = kvmppc_handle_vmx_load(vcpu,
KVM_MMIO_REG_VMX|op.reg,
size, 1);
}
@@ -239,23 +217,23 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
io_size_each = op.element_size;
}
- emulated = kvmppc_handle_vsx_load(run, vcpu,
+ emulated = kvmppc_handle_vsx_load(vcpu,
KVM_MMIO_REG_VSX|op.reg, io_size_each,
1, op.type & SIGNEXT);
break;
}
#endif
- case STORE:
- /* if need byte reverse, op.val has been reversed by
- * analyse_instr().
- */
- emulated = kvmppc_handle_store(run, vcpu, op.val,
- size, 1);
+ case STORE: {
+ int instr_byte_swap = op.type & BYTEREV;
+
+ emulated = kvmppc_handle_store(vcpu, kvmppc_get_gpr(vcpu, op.reg),
+ size, !instr_byte_swap);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
- kvmppc_set_gpr(vcpu, op.update_reg, op.ea);
+ kvmppc_set_gpr(vcpu, op.update_reg, vcpu->arch.vaddr_accessed);
break;
+ }
#ifdef CONFIG_PPC_FPU
case STORE_FP:
if (kvmppc_check_fp_disabled(vcpu))
@@ -272,11 +250,11 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (op.type & FPCONV)
vcpu->arch.mmio_sp64_extend = 1;
- emulated = kvmppc_handle_store(run, vcpu,
- VCPU_FPR(vcpu, op.reg), size, 1);
+ emulated = kvmppc_handle_store(vcpu,
+ kvmppc_get_fpr(vcpu, op.reg), size, 1);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
- kvmppc_set_gpr(vcpu, op.update_reg, op.ea);
+ kvmppc_set_gpr(vcpu, op.update_reg, vcpu->arch.vaddr_accessed);
break;
#endif
@@ -312,12 +290,12 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (size == 16) {
vcpu->arch.mmio_vmx_copy_nums = 2;
- emulated = kvmppc_handle_vmx_store(run,
- vcpu, op.reg, 8, 1);
+ emulated = kvmppc_handle_vmx_store(vcpu,
+ op.reg, 8, 1);
} else {
vcpu->arch.mmio_vmx_copy_nums = 1;
- emulated = kvmppc_handle_vmx_store(run,
- vcpu, op.reg, size, 1);
+ emulated = kvmppc_handle_vmx_store(vcpu,
+ op.reg, size, 1);
}
break;
@@ -360,7 +338,7 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
io_size_each = op.element_size;
}
- emulated = kvmppc_handle_vsx_store(run, vcpu,
+ emulated = kvmppc_handle_vsx_store(vcpu,
op.reg, io_size_each, 1);
break;
}
@@ -379,16 +357,11 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
}
}
- if (emulated == EMULATE_FAIL) {
- advance = 0;
- kvmppc_core_queue_program(vcpu, 0);
- }
-
- trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated);
+ trace_kvm_ppc_instr(ppc_inst_val(inst), kvmppc_get_pc(vcpu), emulated);
/* Advance past emulated instruction. */
- if (advance)
- kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4);
+ if (emulated != EMULATE_FAIL)
+ kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + ppc_inst_len(inst));
return emulated;
}
generated by cgit (git 2.34.1) at 2025-12-25 00:22:48 +0000