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1965aae3 PA |
1 | #ifndef _ASM_X86_LINKAGE_H |
2 | #define _ASM_X86_LINKAGE_H | |
82f74e71 | 3 | |
bb7f5f6c CG |
4 | #include <linux/stringify.h> |
5 | ||
78a9909a IM |
6 | #undef notrace |
7 | #define notrace __attribute__((no_instrument_function)) | |
8 | ||
96a388de | 9 | #ifdef CONFIG_X86_32 |
82f74e71 | 10 | #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0))) |
d50efc6c IM |
11 | /* |
12 | * For 32-bit UML - mark functions implemented in assembly that use | |
13 | * regparm input parameters: | |
14 | */ | |
15 | #define asmregparm __attribute__((regparm(3))) | |
54a01510 | 16 | |
d10d89ec LT |
17 | /* |
18 | * Make sure the compiler doesn't do anything stupid with the | |
19 | * arguments on the stack - they are owned by the *caller*, not | |
20 | * the callee. This just fools gcc into not spilling into them, | |
21 | * and keeps it from doing tailcall recursion and/or using the | |
22 | * stack slots for temporaries, since they are live and "used" | |
23 | * all the way to the end of the function. | |
24 | * | |
25 | * NOTE! On x86-64, all the arguments are in registers, so this | |
26 | * only matters on a 32-bit kernel. | |
27 | */ | |
54a01510 RM |
28 | #define asmlinkage_protect(n, ret, args...) \ |
29 | __asmlinkage_protect##n(ret, ##args) | |
30 | #define __asmlinkage_protect_n(ret, args...) \ | |
31 | __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args) | |
32 | #define __asmlinkage_protect0(ret) \ | |
33 | __asmlinkage_protect_n(ret) | |
34 | #define __asmlinkage_protect1(ret, arg1) \ | |
35 | __asmlinkage_protect_n(ret, "g" (arg1)) | |
36 | #define __asmlinkage_protect2(ret, arg1, arg2) \ | |
37 | __asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2)) | |
38 | #define __asmlinkage_protect3(ret, arg1, arg2, arg3) \ | |
39 | __asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3)) | |
40 | #define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \ | |
41 | __asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \ | |
42 | "g" (arg4)) | |
43 | #define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \ | |
44 | __asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \ | |
45 | "g" (arg4), "g" (arg5)) | |
46 | #define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \ | |
47 | __asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \ | |
48 | "g" (arg4), "g" (arg5), "g" (arg6)) | |
49 | ||
7ab15247 CG |
50 | #endif /* CONFIG_X86_32 */ |
51 | ||
52 | #ifdef __ASSEMBLY__ | |
82f74e71 | 53 | |
95695547 CG |
54 | #define GLOBAL(name) \ |
55 | .globl name; \ | |
56 | name: | |
57 | ||
bb7f5f6c CG |
58 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16) |
59 | #define __ALIGN .p2align 4, 0x90 | |
60 | #define __ALIGN_STR __stringify(__ALIGN) | |
82f74e71 HH |
61 | #endif |
62 | ||
7ab15247 CG |
63 | #endif /* __ASSEMBLY__ */ |
64 | ||
1965aae3 | 65 | #endif /* _ASM_X86_LINKAGE_H */ |
82f74e71 | 66 |