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