cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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efi_stub_64.S (523B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Function calling ABI conversion from Linux to EFI for x86_64
      4 *
      5 * Copyright (C) 2007 Intel Corp
      6 *	Bibo Mao <bibo.mao@intel.com>
      7 *	Huang Ying <ying.huang@intel.com>
      8 */
      9
     10#include <linux/linkage.h>
     11#include <asm/nospec-branch.h>
     12
     13SYM_FUNC_START(__efi_call)
     14	pushq %rbp
     15	movq %rsp, %rbp
     16	and $~0xf, %rsp
     17	mov 16(%rbp), %rax
     18	subq $48, %rsp
     19	mov %r9, 32(%rsp)
     20	mov %rax, 40(%rsp)
     21	mov %r8, %r9
     22	mov %rcx, %r8
     23	mov %rsi, %rcx
     24	CALL_NOSPEC rdi
     25	leave
     26	RET
     27SYM_FUNC_END(__efi_call)