1#ifndef _LINUX_LINKAGE_H
2#define _LINUX_LINKAGE_H
3
4#include <linux/compiler.h>
5#include <linux/stringify.h>
6#include <linux/export.h>
7#include <asm/linkage.h>
8
9
10#ifndef ASM_NL
11#define ASM_NL ;
12#endif
13
14#ifdef __cplusplus
15#define CPP_ASMLINKAGE extern "C"
16#else
17#define CPP_ASMLINKAGE
18#endif
19
20#ifndef asmlinkage
21#define asmlinkage CPP_ASMLINKAGE
22#endif
23
24#ifndef cond_syscall
25#define cond_syscall(x) asm( \
26 ".weak " VMLINUX_SYMBOL_STR(x) "\n\t" \
27 ".set " VMLINUX_SYMBOL_STR(x) "," \
28 VMLINUX_SYMBOL_STR(sys_ni_syscall))
29#endif
30
31#ifndef SYSCALL_ALIAS
32#define SYSCALL_ALIAS(alias, name) asm( \
33 ".globl " VMLINUX_SYMBOL_STR(alias) "\n\t" \
34 ".set " VMLINUX_SYMBOL_STR(alias) "," \
35 VMLINUX_SYMBOL_STR(name))
36#endif
37
38#define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE)
39#define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE)
40
41
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43
44
45
46
47#define __PAGE_ALIGNED_DATA .section ".data..page_aligned", "aw"
48#define __PAGE_ALIGNED_BSS .section ".bss..page_aligned", "aw"
49
50
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62
63
64#ifndef __ASSEMBLY__
65#ifndef asmlinkage_protect
66# define asmlinkage_protect(n, ret, args...) do { } while (0)
67#endif
68#endif
69
70#ifndef __ALIGN
71#define __ALIGN .align 4,0x90
72#define __ALIGN_STR ".align 4,0x90"
73#endif
74
75#ifdef __ASSEMBLY__
76
77#ifndef LINKER_SCRIPT
78#define ALIGN __ALIGN
79#define ALIGN_STR __ALIGN_STR
80
81#ifndef ENTRY
82#define ENTRY(name) \
83 .globl name ASM_NL \
84 ALIGN ASM_NL \
85 name:
86#endif
87#endif
88
89#ifndef WEAK
90#define WEAK(name) \
91 .weak name ASM_NL \
92 name:
93#endif
94
95#ifndef END
96#define END(name) \
97 .size name, .-name
98#endif
99
100
101
102
103
104#ifndef ENDPROC
105#define ENDPROC(name) \
106 .type name, @function ASM_NL \
107 END(name)
108#endif
109
110#endif
111
112#endif
113