1#ifndef _LINUX_LINKAGE_H 2#define _LINUX_LINKAGE_H 3 4#include <asm/linkage.h> 5 6#ifdef __cplusplus 7#define CPP_ASMLINKAGE extern "C" 8#else 9#define CPP_ASMLINKAGE 10#endif 11 12#ifndef asmlinkage 13#define asmlinkage CPP_ASMLINKAGE 14#endif 15 16#ifndef asmregparm 17# define asmregparm 18#endif 19 20/* 21 * This is used by architectures to keep arguments on the stack 22 * untouched by the compiler by keeping them live until the end. 23 * The argument stack may be owned by the assembly-language 24 * caller, not the callee, and gcc doesn't always understand 25 * that. 26 * 27 * We have the return value, and a maximum of six arguments. 28 * 29 * This should always be followed by a "return ret" for the 30 * protection to work (ie no more work that the compiler might 31 * end up needing stack temporaries for). 32 */ 33/* Assembly files may be compiled with -traditional .. */ 34#ifndef __ASSEMBLY__ 35#ifndef asmlinkage_protect 36# define asmlinkage_protect(n, ret, args...) do { } while (0) 37#endif 38#endif 39 40#ifndef __ALIGN 41#define __ALIGN .align 4,0x90 42#define __ALIGN_STR ".align 4,0x90" 43#endif 44 45#ifdef __ASSEMBLY__ 46 47#define ALIGN __ALIGN 48#define ALIGN_STR __ALIGN_STR 49 50#ifndef ENTRY 51#define ENTRY(name) \ 52 .globl name; \ 53 ALIGN; \ 54 name: 55#endif 56 57#ifndef WEAK 58#define WEAK(name) \ 59 .weak name; \ 60 name: 61#endif 62 63#define KPROBE_ENTRY(name) \ 64 .pushsection .kprobes.text, "ax"; \ 65 ENTRY(name) 66 67#define KPROBE_END(name) \ 68 END(name); \ 69 .popsection 70 71#ifndef END 72#define END(name) \ 73 .size name, .-name 74#endif 75 76/* If symbol 'name' is treated as a subroutine (gets called, and returns) 77 * then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of 78 * static analysis tools such as stack depth analyzer. 79 */ 80#ifndef ENDPROC 81#define ENDPROC(name) \ 82 .type name, @function; \ 83 END(name) 84#endif 85 86#endif 87 88#define NORET_TYPE /**/ 89#define ATTRIB_NORET __attribute__((noreturn)) 90#define NORET_AND noreturn, 91 92#endif 93