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// SPDX-License-Identifier: GPL-2.0-only
/*
* Original code:
* Copyright (C) 2012 - Virtual Open Systems and Columbia University
* Author: Christoffer Dall <c.dall@virtualopensystems.com>
*
* Mostly rewritten in C by Marc Zyngier <marc.zyngier@arm.com>
*/
#include <asm/kvm_hyp.h>
/*
* gcc before 4.9 doesn't understand -march=armv7ve, so we have to
* trick the assembler.
*/
__asm__(".arch_extension virt");
void __hyp_text __banked_save_state(struct kvm_cpu_context *ctxt)
{
ctxt->gp_regs.usr_regs.ARM_sp = read_special(SP_usr);
ctxt->gp_regs.usr_regs.ARM_pc = read_special(ELR_hyp);
ctxt->gp_regs.usr_regs.ARM_cpsr = read_special(SPSR);
ctxt->gp_regs.KVM_ARM_SVC_sp = read_special(SP_svc);
ctxt->gp_regs.KVM_ARM_SVC_lr = read_special(LR_svc);
ctxt->gp_regs.KVM_ARM_SVC_spsr = read_special(SPSR_svc);
ctxt->gp_regs.KVM_ARM_ABT_sp = read_special(SP_abt);
ctxt->gp_regs.KVM_ARM_ABT_lr = read_special(LR_abt);
ctxt->gp_regs.KVM_ARM_ABT_spsr = read_special(SPSR_abt);
ctxt->gp_regs.KVM_ARM_UND_sp = read_special(SP_und);
ctxt->gp_regs.KVM_ARM_UND_lr = read_special(LR_und);
ctxt->gp_regs.KVM_ARM_UND_spsr = read_special(SPSR_und);
ctxt->gp_regs.KVM_ARM_IRQ_sp = read_special(SP_irq);
ctxt->gp_regs.KVM_ARM_IRQ_lr = read_special(LR_irq);
ctxt->gp_regs.KVM_ARM_IRQ_spsr = read_special(SPSR_irq);
ctxt->gp_regs.KVM_ARM_FIQ_r8 = read_special(R8_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_r9 = read_special(R9_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_r10 = read_special(R10_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_fp = read_special(R11_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_ip = read_special(R12_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_sp = read_special(SP_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_lr = read_special(LR_fiq);
ctxt->gp_regs.KVM_ARM_FIQ_spsr = read_special(SPSR_fiq);
}
void __hyp_text __banked_restore_state(struct kvm_cpu_context *ctxt)
{
write_special(ctxt->gp_regs.usr_regs.ARM_sp, SP_usr);
write_special(ctxt->gp_regs.usr_regs.ARM_pc, ELR_hyp);
write_special(ctxt->gp_regs.usr_regs.ARM_cpsr, SPSR_cxsf);
write_special(ctxt->gp_regs.KVM_ARM_SVC_sp, SP_svc);
write_special(ctxt->gp_regs.KVM_ARM_SVC_lr, LR_svc);
write_special(ctxt->gp_regs.KVM_ARM_SVC_spsr, SPSR_svc);
write_special(ctxt->gp_regs.KVM_ARM_ABT_sp, SP_abt);
write_special(ctxt->gp_regs.KVM_ARM_ABT_lr, LR_abt);
write_special(ctxt->gp_regs.KVM_ARM_ABT_spsr, SPSR_abt);
write_special(ctxt->gp_regs.KVM_ARM_UND_sp, SP_und);
write_special(ctxt->gp_regs.KVM_ARM_UND_lr, LR_und);
write_special(ctxt->gp_regs.KVM_ARM_UND_spsr, SPSR_und);
write_special(ctxt->gp_regs.KVM_ARM_IRQ_sp, SP_irq);
write_special(ctxt->gp_regs.KVM_ARM_IRQ_lr, LR_irq);
write_special(ctxt->gp_regs.KVM_ARM_IRQ_spsr, SPSR_irq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_r8, R8_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_r9, R9_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_r10, R10_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_fp, R11_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_ip, R12_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_sp, SP_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_lr, LR_fiq);
write_special(ctxt->gp_regs.KVM_ARM_FIQ_spsr, SPSR_fiq);
}
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