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34fdce6981
In order to change the {JMP,CALL}_NOSPEC macros to call out-of-line
versions of the retpoline magic, we need to remove the '%' from the
argument, such that we can paste it onto symbol names.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200428191700.151623523@infradead.org
27 lines
523 B
ArmAsm
27 lines
523 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Function calling ABI conversion from Linux to EFI for x86_64
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*
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* Copyright (C) 2007 Intel Corp
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* Bibo Mao <bibo.mao@intel.com>
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* Huang Ying <ying.huang@intel.com>
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*/
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#include <linux/linkage.h>
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#include <asm/nospec-branch.h>
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SYM_FUNC_START(__efi_call)
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pushq %rbp
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movq %rsp, %rbp
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and $~0xf, %rsp
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mov 16(%rbp), %rax
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subq $48, %rsp
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mov %r9, 32(%rsp)
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mov %rax, 40(%rsp)
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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CALL_NOSPEC rdi
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leave
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ret
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SYM_FUNC_END(__efi_call)
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