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lastdragon
2026-09-06 12:53:21 -06:00
parent 662efe3c2a
commit ad2088d178
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linux-7.2.3/arch/x86/platform/efi/efi_stub_64.S
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Function calling ABI conversion from Linux to EFI for x86_64
*
* Copyright (C) 2007 Intel Corp
* Bibo Mao <bibo.mao@intel.com>
* Huang Ying <ying.huang@intel.com>
*/
#include <linux/linkage.h>
#include <asm/nospec-branch.h>
SYM_FUNC_START(__efi_call)
/*
* The EFI code doesn't have any CFI, annotate away the CFI violation.
*/
ANNOTATE_NOCFI_SYM
pushq %rbp
movq %rsp, %rbp
and $~0xf, %rsp
mov 16(%rbp), %rax
subq $48, %rsp
mov %r9, 32(%rsp)
mov %rax, 40(%rsp)
mov %r8, %r9
mov %rcx, %r8
mov %rsi, %rcx
CALL_NOSPEC rdi
leave
RET
SYM_FUNC_END(__efi_call)