0,0 → 1,61 |
#ifndef _ASM_X86_LINKAGE_H |
#define _ASM_X86_LINKAGE_H |
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#include <linux/stringify.h> |
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#undef notrace |
#define notrace __attribute__((no_instrument_function)) |
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#ifdef CONFIG_X86_32 |
#define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0))) |
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/* |
* Make sure the compiler doesn't do anything stupid with the |
* arguments on the stack - they are owned by the *caller*, not |
* the callee. This just fools gcc into not spilling into them, |
* and keeps it from doing tailcall recursion and/or using the |
* stack slots for temporaries, since they are live and "used" |
* all the way to the end of the function. |
* |
* NOTE! On x86-64, all the arguments are in registers, so this |
* only matters on a 32-bit kernel. |
*/ |
#define asmlinkage_protect(n, ret, args...) \ |
__asmlinkage_protect##n(ret, ##args) |
#define __asmlinkage_protect_n(ret, args...) \ |
__asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args) |
#define __asmlinkage_protect0(ret) \ |
__asmlinkage_protect_n(ret) |
#define __asmlinkage_protect1(ret, arg1) \ |
__asmlinkage_protect_n(ret, "m" (arg1)) |
#define __asmlinkage_protect2(ret, arg1, arg2) \ |
__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2)) |
#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \ |
__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3)) |
#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \ |
__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ |
"m" (arg4)) |
#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \ |
__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ |
"m" (arg4), "m" (arg5)) |
#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \ |
__asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ |
"m" (arg4), "m" (arg5), "m" (arg6)) |
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#endif /* CONFIG_X86_32 */ |
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#ifdef __ASSEMBLY__ |
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#define GLOBAL(name) \ |
.globl name; \ |
name: |
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#if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16) |
#define __ALIGN .p2align 4, 0x90 |
#define __ALIGN_STR __stringify(__ALIGN) |
#endif |
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#endif /* __ASSEMBLY__ */ |
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#endif /* _ASM_X86_LINKAGE_H */ |
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