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Diffstat (limited to 'arch/arm64/kvm/regmap.c')
-rw-r--r--arch/arm64/kvm/regmap.c195
1 files changed, 0 insertions, 195 deletions
diff --git a/arch/arm64/kvm/regmap.c b/arch/arm64/kvm/regmap.c
deleted file mode 100644
index a900181e3867..000000000000
--- a/arch/arm64/kvm/regmap.c
+++ /dev/null
@@ -1,195 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2012,2013 - ARM Ltd
- * Author: Marc Zyngier <marc.zyngier@arm.com>
- *
- * Derived from arch/arm/kvm/emulate.c:
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Author: Christoffer Dall <c.dall@virtualopensystems.com>
- */
-
-#include <linux/mm.h>
-#include <linux/kvm_host.h>
-#include <asm/kvm_emulate.h>
-#include <asm/ptrace.h>
-
-#define VCPU_NR_MODES 6
-#define REG_OFFSET(_reg) \
- (offsetof(struct user_pt_regs, _reg) / sizeof(unsigned long))
-
-#define USR_REG_OFFSET(R) REG_OFFSET(compat_usr(R))
-
-static const unsigned long vcpu_reg_offsets[VCPU_NR_MODES][16] = {
- /* USR Registers */
- {
- USR_REG_OFFSET(0), USR_REG_OFFSET(1), USR_REG_OFFSET(2),
- USR_REG_OFFSET(3), USR_REG_OFFSET(4), USR_REG_OFFSET(5),
- USR_REG_OFFSET(6), USR_REG_OFFSET(7), USR_REG_OFFSET(8),
- USR_REG_OFFSET(9), USR_REG_OFFSET(10), USR_REG_OFFSET(11),
- USR_REG_OFFSET(12), USR_REG_OFFSET(13), USR_REG_OFFSET(14),
- REG_OFFSET(pc)
- },
-
- /* FIQ Registers */
- {
- USR_REG_OFFSET(0), USR_REG_OFFSET(1), USR_REG_OFFSET(2),
- USR_REG_OFFSET(3), USR_REG_OFFSET(4), USR_REG_OFFSET(5),
- USR_REG_OFFSET(6), USR_REG_OFFSET(7),
- REG_OFFSET(compat_r8_fiq), /* r8 */
- REG_OFFSET(compat_r9_fiq), /* r9 */
- REG_OFFSET(compat_r10_fiq), /* r10 */
- REG_OFFSET(compat_r11_fiq), /* r11 */
- REG_OFFSET(compat_r12_fiq), /* r12 */
- REG_OFFSET(compat_sp_fiq), /* r13 */
- REG_OFFSET(compat_lr_fiq), /* r14 */
- REG_OFFSET(pc)
- },
-
- /* IRQ Registers */
- {
- USR_REG_OFFSET(0), USR_REG_OFFSET(1), USR_REG_OFFSET(2),
- USR_REG_OFFSET(3), USR_REG_OFFSET(4), USR_REG_OFFSET(5),
- USR_REG_OFFSET(6), USR_REG_OFFSET(7), USR_REG_OFFSET(8),
- USR_REG_OFFSET(9), USR_REG_OFFSET(10), USR_REG_OFFSET(11),
- USR_REG_OFFSET(12),
- REG_OFFSET(compat_sp_irq), /* r13 */
- REG_OFFSET(compat_lr_irq), /* r14 */
- REG_OFFSET(pc)
- },
-
- /* SVC Registers */
- {
- USR_REG_OFFSET(0), USR_REG_OFFSET(1), USR_REG_OFFSET(2),
- USR_REG_OFFSET(3), USR_REG_OFFSET(4), USR_REG_OFFSET(5),
- USR_REG_OFFSET(6), USR_REG_OFFSET(7), USR_REG_OFFSET(8),
- USR_REG_OFFSET(9), USR_REG_OFFSET(10), USR_REG_OFFSET(11),
- USR_REG_OFFSET(12),
- REG_OFFSET(compat_sp_svc), /* r13 */
- REG_OFFSET(compat_lr_svc), /* r14 */
- REG_OFFSET(pc)
- },
-
- /* ABT Registers */
- {
- USR_REG_OFFSET(0), USR_REG_OFFSET(1), USR_REG_OFFSET(2),
- USR_REG_OFFSET(3), USR_REG_OFFSET(4), USR_REG_OFFSET(5),
- USR_REG_OFFSET(6), USR_REG_OFFSET(7), USR_REG_OFFSET(8),
- USR_REG_OFFSET(9), USR_REG_OFFSET(10), USR_REG_OFFSET(11),
- USR_REG_OFFSET(12),
- REG_OFFSET(compat_sp_abt), /* r13 */
- REG_OFFSET(compat_lr_abt), /* r14 */
- REG_OFFSET(pc)
- },
-
- /* UND Registers */
- {
- USR_REG_OFFSET(0), USR_REG_OFFSET(1), USR_REG_OFFSET(2),
- USR_REG_OFFSET(3), USR_REG_OFFSET(4), USR_REG_OFFSET(5),
- USR_REG_OFFSET(6), USR_REG_OFFSET(7), USR_REG_OFFSET(8),
- USR_REG_OFFSET(9), USR_REG_OFFSET(10), USR_REG_OFFSET(11),
- USR_REG_OFFSET(12),
- REG_OFFSET(compat_sp_und), /* r13 */
- REG_OFFSET(compat_lr_und), /* r14 */
- REG_OFFSET(pc)
- },
-};
-
-/*
- * Return a pointer to the register number valid in the current mode of
- * the virtual CPU.
- */
-unsigned long *vcpu_reg32(const struct kvm_vcpu *vcpu, u8 reg_num)
-{
- unsigned long *reg_array = (unsigned long *)&vcpu->arch.ctxt.gp_regs.regs;
- unsigned long mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK;
-
- switch (mode) {
- case PSR_AA32_MODE_USR ... PSR_AA32_MODE_SVC:
- mode &= ~PSR_MODE32_BIT; /* 0 ... 3 */
- break;
-
- case PSR_AA32_MODE_ABT:
- mode = 4;
- break;
-
- case PSR_AA32_MODE_UND:
- mode = 5;
- break;
-
- case PSR_AA32_MODE_SYS:
- mode = 0; /* SYS maps to USR */
- break;
-
- default:
- BUG();
- }
-
- return reg_array + vcpu_reg_offsets[mode][reg_num];
-}
-
-/*
- * Return the SPSR for the current mode of the virtual CPU.
- */
-static int vcpu_spsr32_mode(const struct kvm_vcpu *vcpu)
-{
- unsigned long mode = *vcpu_cpsr(vcpu) & PSR_AA32_MODE_MASK;
- switch (mode) {
- case PSR_AA32_MODE_SVC: return KVM_SPSR_SVC;
- case PSR_AA32_MODE_ABT: return KVM_SPSR_ABT;
- case PSR_AA32_MODE_UND: return KVM_SPSR_UND;
- case PSR_AA32_MODE_IRQ: return KVM_SPSR_IRQ;
- case PSR_AA32_MODE_FIQ: return KVM_SPSR_FIQ;
- default: BUG();
- }
-}
-
-unsigned long vcpu_read_spsr32(const struct kvm_vcpu *vcpu)
-{
- int spsr_idx = vcpu_spsr32_mode(vcpu);
-
- if (!vcpu->arch.sysregs_loaded_on_cpu)
- return vcpu_gp_regs(vcpu)->spsr[spsr_idx];
-
- switch (spsr_idx) {
- case KVM_SPSR_SVC:
- return read_sysreg_el1(SYS_SPSR);
- case KVM_SPSR_ABT:
- return read_sysreg(spsr_abt);
- case KVM_SPSR_UND:
- return read_sysreg(spsr_und);
- case KVM_SPSR_IRQ:
- return read_sysreg(spsr_irq);
- case KVM_SPSR_FIQ:
- return read_sysreg(spsr_fiq);
- default:
- BUG();
- }
-}
-
-void vcpu_write_spsr32(struct kvm_vcpu *vcpu, unsigned long v)
-{
- int spsr_idx = vcpu_spsr32_mode(vcpu);
-
- if (!vcpu->arch.sysregs_loaded_on_cpu) {
- vcpu_gp_regs(vcpu)->spsr[spsr_idx] = v;
- return;
- }
-
- switch (spsr_idx) {
- case KVM_SPSR_SVC:
- write_sysreg_el1(v, SYS_SPSR);
- break;
- case KVM_SPSR_ABT:
- write_sysreg(v, spsr_abt);
- break;
- case KVM_SPSR_UND:
- write_sysreg(v, spsr_und);
- break;
- case KVM_SPSR_IRQ:
- write_sysreg(v, spsr_irq);
- break;
- case KVM_SPSR_FIQ:
- write_sysreg(v, spsr_fiq);
- break;
- }
-}
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