1 #ifndef _LINUX_LINKAGE_H
2 #define _LINUX_LINKAGE_H
4 #include <linux/compiler.h>
5 #include <asm/linkage.h>
8 #define CPP_ASMLINKAGE extern "C"
10 #define CPP_ASMLINKAGE
14 #define asmlinkage CPP_ASMLINKAGE
21 #define __page_aligned_data __section(.data.page_aligned) __aligned(PAGE_SIZE)
22 #define __page_aligned_bss __section(.bss.page_aligned) __aligned(PAGE_SIZE)
25 * For assembly routines.
27 * Note when using these that you must specify the appropriate
28 * alignment directives yourself
30 #define __PAGE_ALIGNED_DATA .section ".data.page_aligned", "aw"
31 #define __PAGE_ALIGNED_BSS .section ".bss.page_aligned", "aw"
34 * This is used by architectures to keep arguments on the stack
35 * untouched by the compiler by keeping them live until the end.
36 * The argument stack may be owned by the assembly-language
37 * caller, not the callee, and gcc doesn't always understand
40 * We have the return value, and a maximum of six arguments.
42 * This should always be followed by a "return ret" for the
43 * protection to work (ie no more work that the compiler might
44 * end up needing stack temporaries for).
46 /* Assembly files may be compiled with -traditional .. */
48 #ifndef asmlinkage_protect
49 # define asmlinkage_protect(n, ret, args...) do { } while (0)
54 #define __ALIGN .align 4,0x90
55 #define __ALIGN_STR ".align 4,0x90"
62 #define ALIGN_STR __ALIGN_STR
70 #endif /* LINKER_SCRIPT */
83 /* If symbol 'name' is treated as a subroutine (gets called, and returns)
84 * then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of
85 * static analysis tools such as stack depth analyzer.
88 #define ENDPROC(name) \
89 .type name, @function; \
95 #define NORET_TYPE /**/
96 #define ATTRIB_NORET __attribute__((noreturn))
97 #define NORET_AND noreturn,
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