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