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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trampoline.S (585B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
      4 */
      5
      6/*
      7 * Trampoline sequences to be copied onto user stack.
      8 * This consumes a little more space than hand-assembling
      9 * immediate constants for use in C, but is more portable
     10 * to future tweaks to the Hexagon instruction set.
     11 */
     12
     13#include <asm/unistd.h>
     14
     15/*  Sig trampolines - call sys_sigreturn or sys_rt_sigreturn as appropriate */
     16
     17/*  plain sigreturn is gone.  */
     18
     19	.globl __rt_sigtramp_template
     20__rt_sigtramp_template:
     21	r6 = #__NR_rt_sigreturn;
     22	trap0(#1);