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/*
* GPR context switch between host and guest.
* Used by IO-port-access emulation stub.
*
* Copyright (c) 2006, Novell, Inc.
*/
#include <xen/config.h>
#include <asm/asm_defns.h>
ENTRY(host_to_guest_gpr_switch)
movq (%rsp), %rcx
movq %rdi, (%rsp)
movq UREGS_rdx(%rdi), %rdx
pushq %rbx
movq UREGS_rax(%rdi), %rax
movq UREGS_rbx(%rdi), %rbx
pushq %rbp
movq UREGS_rsi(%rdi), %rsi
movq UREGS_rbp(%rdi), %rbp
pushq %r12
movq UREGS_r8(%rdi), %r8
movq UREGS_r12(%rdi), %r12
pushq %r13
movq UREGS_r9(%rdi), %r9
movq UREGS_r13(%rdi), %r13
pushq %r14
movq UREGS_r10(%rdi), %r10
movq UREGS_r14(%rdi), %r14
pushq %r15
movq UREGS_r11(%rdi), %r11
movq UREGS_r15(%rdi), %r15
pushq %rcx /* dummy push, filled by guest_to_host_gpr_switch pointer */
pushq %rcx
leaq guest_to_host_gpr_switch(%rip),%rcx
movq %rcx,8(%rsp)
movq UREGS_rcx(%rdi), %rcx
movq UREGS_rdi(%rdi), %rdi
ret
ENTRY(guest_to_host_gpr_switch)
pushq %rdi
movq 7*8(%rsp), %rdi
movq %rax, UREGS_rax(%rdi)
popq UREGS_rdi(%rdi)
movq %r15, UREGS_r15(%rdi)
movq %r11, UREGS_r11(%rdi)
popq %r15
movq %r14, UREGS_r14(%rdi)
movq %r10, UREGS_r10(%rdi)
popq %r14
movq %r13, UREGS_r13(%rdi)
movq %r9, UREGS_r9(%rdi)
popq %r13
movq %r12, UREGS_r12(%rdi)
movq %r8, UREGS_r8(%rdi)
popq %r12
movq %rbp, UREGS_rbp(%rdi)
movq %rsi, UREGS_rsi(%rdi)
popq %rbp
movq %rbx, UREGS_rbx(%rdi)
movq %rdx, UREGS_rdx(%rdi)
popq %rbx
movq %rcx, UREGS_rcx(%rdi)
popq %rcx
ret
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