Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _LINUX_LINKAGE_H |
2 | #define _LINUX_LINKAGE_H | |
3 | ||
a7bf0bd5 | 4 | #include <linux/compiler.h> |
1da177e4 LT |
5 | #include <asm/linkage.h> |
6 | ||
7 | #ifdef __cplusplus | |
8 | #define CPP_ASMLINKAGE extern "C" | |
9 | #else | |
10 | #define CPP_ASMLINKAGE | |
11 | #endif | |
12 | ||
13 | #ifndef asmlinkage | |
14 | #define asmlinkage CPP_ASMLINKAGE | |
15 | #endif | |
16 | ||
d50efc6c IM |
17 | #ifndef asmregparm |
18 | # define asmregparm | |
19 | #endif | |
20 | ||
a7bf0bd5 JF |
21 | #define __page_aligned_data __section(.data.page_aligned) __aligned(PAGE_SIZE) |
22 | #define __page_aligned_bss __section(.bss.page_aligned) __aligned(PAGE_SIZE) | |
23 | ||
d10d89ec LT |
24 | /* |
25 | * This is used by architectures to keep arguments on the stack | |
26 | * untouched by the compiler by keeping them live until the end. | |
27 | * The argument stack may be owned by the assembly-language | |
28 | * caller, not the callee, and gcc doesn't always understand | |
29 | * that. | |
30 | * | |
31 | * We have the return value, and a maximum of six arguments. | |
32 | * | |
33 | * This should always be followed by a "return ret" for the | |
34 | * protection to work (ie no more work that the compiler might | |
35 | * end up needing stack temporaries for). | |
36 | */ | |
b0fac023 HC |
37 | /* Assembly files may be compiled with -traditional .. */ |
38 | #ifndef __ASSEMBLY__ | |
54a01510 RM |
39 | #ifndef asmlinkage_protect |
40 | # define asmlinkage_protect(n, ret, args...) do { } while (0) | |
1da177e4 | 41 | #endif |
b0fac023 | 42 | #endif |
1da177e4 LT |
43 | |
44 | #ifndef __ALIGN | |
45 | #define __ALIGN .align 4,0x90 | |
46 | #define __ALIGN_STR ".align 4,0x90" | |
47 | #endif | |
48 | ||
49 | #ifdef __ASSEMBLY__ | |
50 | ||
51 | #define ALIGN __ALIGN | |
52 | #define ALIGN_STR __ALIGN_STR | |
53 | ||
ab7efcc9 | 54 | #ifndef ENTRY |
1da177e4 LT |
55 | #define ENTRY(name) \ |
56 | .globl name; \ | |
57 | ALIGN; \ | |
58 | name: | |
ab7efcc9 | 59 | #endif |
1da177e4 | 60 | |
214541d1 RR |
61 | #ifndef WEAK |
62 | #define WEAK(name) \ | |
63 | .weak name; \ | |
64 | name: | |
65 | #endif | |
66 | ||
ab7efcc9 JB |
67 | #ifndef END |
68 | #define END(name) \ | |
69 | .size name, .-name | |
70 | #endif | |
71 | ||
6b8be6df JR |
72 | /* If symbol 'name' is treated as a subroutine (gets called, and returns) |
73 | * then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of | |
74 | * static analysis tools such as stack depth analyzer. | |
75 | */ | |
ab7efcc9 JB |
76 | #ifndef ENDPROC |
77 | #define ENDPROC(name) \ | |
78 | .type name, @function; \ | |
79 | END(name) | |
80 | #endif | |
d0aaff97 | 81 | |
1da177e4 LT |
82 | #endif |
83 | ||
84 | #define NORET_TYPE /**/ | |
85 | #define ATTRIB_NORET __attribute__((noreturn)) | |
86 | #define NORET_AND noreturn, | |
87 | ||
1da177e4 | 88 | #endif |