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| Rev | Author | Line No. | Line |
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| 5270 | serge | 1 | #ifndef _ASM_X86_LINKAGE_H |
| 2 | #define _ASM_X86_LINKAGE_H |
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| 3 | |||
| 4 | #include |
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| 5 | |||
| 6 | #undef notrace |
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| 7 | #define notrace __attribute__((no_instrument_function)) |
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| 8 | |||
| 9 | #ifdef CONFIG_X86_32 |
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| 10 | #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0))) |
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| 11 | |||
| 12 | /* |
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| 13 | * Make sure the compiler doesn't do anything stupid with the |
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| 14 | * arguments on the stack - they are owned by the *caller*, not |
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| 15 | * the callee. This just fools gcc into not spilling into them, |
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| 16 | * and keeps it from doing tailcall recursion and/or using the |
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| 17 | * stack slots for temporaries, since they are live and "used" |
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| 18 | * all the way to the end of the function. |
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| 19 | * |
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| 20 | * NOTE! On x86-64, all the arguments are in registers, so this |
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| 21 | * only matters on a 32-bit kernel. |
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| 22 | */ |
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| 23 | #define asmlinkage_protect(n, ret, args...) \ |
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| 24 | __asmlinkage_protect##n(ret, ##args) |
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| 25 | #define __asmlinkage_protect_n(ret, args...) \ |
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| 26 | __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args) |
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| 27 | #define __asmlinkage_protect0(ret) \ |
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| 28 | __asmlinkage_protect_n(ret) |
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| 29 | #define __asmlinkage_protect1(ret, arg1) \ |
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| 30 | __asmlinkage_protect_n(ret, "m" (arg1)) |
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| 31 | #define __asmlinkage_protect2(ret, arg1, arg2) \ |
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| 32 | __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2)) |
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| 33 | #define __asmlinkage_protect3(ret, arg1, arg2, arg3) \ |
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| 34 | __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3)) |
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| 35 | #define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \ |
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| 36 | __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ |
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| 37 | "m" (arg4)) |
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| 38 | #define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \ |
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| 39 | __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ |
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| 40 | "m" (arg4), "m" (arg5)) |
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| 41 | #define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \ |
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| 42 | __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ |
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| 43 | "m" (arg4), "m" (arg5), "m" (arg6)) |
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| 44 | |||
| 45 | #endif /* CONFIG_X86_32 */ |
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| 46 | |||
| 47 | #ifdef __ASSEMBLY__ |
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| 48 | |||
| 49 | #define GLOBAL(name) \ |
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| 50 | .globl name; \ |
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| 51 | name: |
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| 52 | |||
| 53 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16) |
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| 54 | #define __ALIGN .p2align 4, 0x90 |
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| 55 | #define __ALIGN_STR __stringify(__ALIGN) |
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| 56 | #endif |
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| 57 | |||
| 58 | #endif /* __ASSEMBLY__ */ |
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| 59 | |||
| 60 | #endif /* _ASM_X86_LINKAGE_H */ |
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| 61 |