| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Original code: |
| 4 | * Copyright (C) 2012 - Virtual Open Systems and Columbia University |
| 5 | * Author: Christoffer Dall <c.dall@virtualopensystems.com> |
| 6 | * |
| 7 | * Mostly rewritten in C by Marc Zyngier <marc.zyngier@arm.com> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <asm/kvm_hyp.h> |
| 11 | |
| 12 | /* |
| 13 | * gcc before 4.9 doesn't understand -march=armv7ve, so we have to |
| 14 | * trick the assembler. |
| 15 | */ |
| 16 | __asm__(".arch_extension virt"); |
| 17 | |
| 18 | void __hyp_text __banked_save_state(struct kvm_cpu_context *ctxt) |
| 19 | { |
| 20 | ctxt->gp_regs.usr_regs.ARM_sp = read_special(SP_usr); |
| 21 | ctxt->gp_regs.usr_regs.ARM_pc = read_special(ELR_hyp); |
| 22 | ctxt->gp_regs.usr_regs.ARM_cpsr = read_special(SPSR); |
| 23 | ctxt->gp_regs.KVM_ARM_SVC_sp = read_special(SP_svc); |
| 24 | ctxt->gp_regs.KVM_ARM_SVC_lr = read_special(LR_svc); |
| 25 | ctxt->gp_regs.KVM_ARM_SVC_spsr = read_special(SPSR_svc); |
| 26 | ctxt->gp_regs.KVM_ARM_ABT_sp = read_special(SP_abt); |
| 27 | ctxt->gp_regs.KVM_ARM_ABT_lr = read_special(LR_abt); |
| 28 | ctxt->gp_regs.KVM_ARM_ABT_spsr = read_special(SPSR_abt); |
| 29 | ctxt->gp_regs.KVM_ARM_UND_sp = read_special(SP_und); |
| 30 | ctxt->gp_regs.KVM_ARM_UND_lr = read_special(LR_und); |
| 31 | ctxt->gp_regs.KVM_ARM_UND_spsr = read_special(SPSR_und); |
| 32 | ctxt->gp_regs.KVM_ARM_IRQ_sp = read_special(SP_irq); |
| 33 | ctxt->gp_regs.KVM_ARM_IRQ_lr = read_special(LR_irq); |
| 34 | ctxt->gp_regs.KVM_ARM_IRQ_spsr = read_special(SPSR_irq); |
| 35 | ctxt->gp_regs.KVM_ARM_FIQ_r8 = read_special(R8_fiq); |
| 36 | ctxt->gp_regs.KVM_ARM_FIQ_r9 = read_special(R9_fiq); |
| 37 | ctxt->gp_regs.KVM_ARM_FIQ_r10 = read_special(R10_fiq); |
| 38 | ctxt->gp_regs.KVM_ARM_FIQ_fp = read_special(R11_fiq); |
| 39 | ctxt->gp_regs.KVM_ARM_FIQ_ip = read_special(R12_fiq); |
| 40 | ctxt->gp_regs.KVM_ARM_FIQ_sp = read_special(SP_fiq); |
| 41 | ctxt->gp_regs.KVM_ARM_FIQ_lr = read_special(LR_fiq); |
| 42 | ctxt->gp_regs.KVM_ARM_FIQ_spsr = read_special(SPSR_fiq); |
| 43 | } |
| 44 | |
| 45 | void __hyp_text __banked_restore_state(struct kvm_cpu_context *ctxt) |
| 46 | { |
| 47 | write_special(ctxt->gp_regs.usr_regs.ARM_sp, SP_usr); |
| 48 | write_special(ctxt->gp_regs.usr_regs.ARM_pc, ELR_hyp); |
| 49 | write_special(ctxt->gp_regs.usr_regs.ARM_cpsr, SPSR_cxsf); |
| 50 | write_special(ctxt->gp_regs.KVM_ARM_SVC_sp, SP_svc); |
| 51 | write_special(ctxt->gp_regs.KVM_ARM_SVC_lr, LR_svc); |
| 52 | write_special(ctxt->gp_regs.KVM_ARM_SVC_spsr, SPSR_svc); |
| 53 | write_special(ctxt->gp_regs.KVM_ARM_ABT_sp, SP_abt); |
| 54 | write_special(ctxt->gp_regs.KVM_ARM_ABT_lr, LR_abt); |
| 55 | write_special(ctxt->gp_regs.KVM_ARM_ABT_spsr, SPSR_abt); |
| 56 | write_special(ctxt->gp_regs.KVM_ARM_UND_sp, SP_und); |
| 57 | write_special(ctxt->gp_regs.KVM_ARM_UND_lr, LR_und); |
| 58 | write_special(ctxt->gp_regs.KVM_ARM_UND_spsr, SPSR_und); |
| 59 | write_special(ctxt->gp_regs.KVM_ARM_IRQ_sp, SP_irq); |
| 60 | write_special(ctxt->gp_regs.KVM_ARM_IRQ_lr, LR_irq); |
| 61 | write_special(ctxt->gp_regs.KVM_ARM_IRQ_spsr, SPSR_irq); |
| 62 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_r8, R8_fiq); |
| 63 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_r9, R9_fiq); |
| 64 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_r10, R10_fiq); |
| 65 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_fp, R11_fiq); |
| 66 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_ip, R12_fiq); |
| 67 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_sp, SP_fiq); |
| 68 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_lr, LR_fiq); |
| 69 | write_special(ctxt->gp_regs.KVM_ARM_FIQ_spsr, SPSR_fiq); |
| 70 | } |