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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linkage.h (1583B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __ASM_LINKAGE_H
      3#define __ASM_LINKAGE_H
      4
      5#define __ALIGN .align 4
      6#define __ALIGN_STR ".align 4"
      7
      8/*
      9 * Make sure the compiler doesn't do anything stupid with the
     10 * arguments on the stack - they are owned by the *caller*, not
     11 * the callee. This just fools gcc into not spilling into them,
     12 * and keeps it from doing tailcall recursion and/or using the
     13 * stack slots for temporaries, since they are live and "used"
     14 * all the way to the end of the function.
     15 */
     16#define asmlinkage_protect(n, ret, args...) \
     17	__asmlinkage_protect##n(ret, ##args)
     18#define __asmlinkage_protect_n(ret, args...) \
     19	__asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
     20#define __asmlinkage_protect0(ret) \
     21	__asmlinkage_protect_n(ret)
     22#define __asmlinkage_protect1(ret, arg1) \
     23	__asmlinkage_protect_n(ret, "m" (arg1))
     24#define __asmlinkage_protect2(ret, arg1, arg2) \
     25	__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2))
     26#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \
     27	__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3))
     28#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \
     29	__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
     30			      "m" (arg4))
     31#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
     32	__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
     33			      "m" (arg4), "m" (arg5))
     34#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \
     35	__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
     36			      "m" (arg4), "m" (arg5), "m" (arg6))
     37
     38#endif