78 lines
1.3 KiB
ArmAsm
78 lines
1.3 KiB
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Early IDT handler entry points
|
||
|
|
*
|
||
|
|
* Copyright (C) 2019 SUSE
|
||
|
|
*
|
||
|
|
* Author: Joerg Roedel <jroedel@suse.de>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm/segment.h>
|
||
|
|
|
||
|
|
/* For ORIG_RAX */
|
||
|
|
#include "../../entry/calling.h"
|
||
|
|
|
||
|
|
.macro EXCEPTION_HANDLER name function error_code=0
|
||
|
|
SYM_FUNC_START(\name)
|
||
|
|
|
||
|
|
/* Build pt_regs */
|
||
|
|
.if \error_code == 0
|
||
|
|
pushq $0
|
||
|
|
.endif
|
||
|
|
|
||
|
|
pushq %rdi
|
||
|
|
pushq %rsi
|
||
|
|
pushq %rdx
|
||
|
|
pushq %rcx
|
||
|
|
pushq %rax
|
||
|
|
pushq %r8
|
||
|
|
pushq %r9
|
||
|
|
pushq %r10
|
||
|
|
pushq %r11
|
||
|
|
pushq %rbx
|
||
|
|
pushq %rbp
|
||
|
|
pushq %r12
|
||
|
|
pushq %r13
|
||
|
|
pushq %r14
|
||
|
|
pushq %r15
|
||
|
|
|
||
|
|
/* Call handler with pt_regs */
|
||
|
|
movq %rsp, %rdi
|
||
|
|
/* Error code is second parameter */
|
||
|
|
movq ORIG_RAX(%rsp), %rsi
|
||
|
|
call \function
|
||
|
|
|
||
|
|
/* Restore regs */
|
||
|
|
popq %r15
|
||
|
|
popq %r14
|
||
|
|
popq %r13
|
||
|
|
popq %r12
|
||
|
|
popq %rbp
|
||
|
|
popq %rbx
|
||
|
|
popq %r11
|
||
|
|
popq %r10
|
||
|
|
popq %r9
|
||
|
|
popq %r8
|
||
|
|
popq %rax
|
||
|
|
popq %rcx
|
||
|
|
popq %rdx
|
||
|
|
popq %rsi
|
||
|
|
popq %rdi
|
||
|
|
|
||
|
|
/* Remove error code and return */
|
||
|
|
addq $8, %rsp
|
||
|
|
|
||
|
|
iretq
|
||
|
|
SYM_FUNC_END(\name)
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.text
|
||
|
|
.code64
|
||
|
|
|
||
|
|
EXCEPTION_HANDLER boot_page_fault do_boot_page_fault error_code=1
|
||
|
|
|
||
|
|
#ifdef CONFIG_AMD_MEM_ENCRYPT
|
||
|
|
EXCEPTION_HANDLER boot_stage1_vc do_vc_no_ghcb error_code=1
|
||
|
|
EXCEPTION_HANDLER boot_stage2_vc do_boot_stage2_vc error_code=1
|
||
|
|
#endif
|