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 #ifndef prevent_tail_call 21 # define prevent_tail_call(ret) do { } while (0) 22 #endif 23 24 #ifndef __ALIGN 25 #define __ALIGN .align 4,0x90 26 #define __ALIGN_STR ".align 4,0x90" 27 #endif 28 29 #ifdef __ASSEMBLY__ 30 31 #define ALIGN __ALIGN 32 #define ALIGN_STR __ALIGN_STR 33 34 #ifndef ENTRY 35 #define ENTRY(name) \ 36 .globl name; \ 37 ALIGN; \ 38 name: 39 #endif 40 41 #ifndef WEAK 42 #define WEAK(name) \ 43 .weak name; \ 44 name: 45 #endif 46 47 #define KPROBE_ENTRY(name) \ 48 .pushsection .kprobes.text, "ax"; \ 49 ENTRY(name) 50 51 #define KPROBE_END(name) \ 52 END(name); \ 53 .popsection 54 55 #ifndef END 56 #define END(name) \ 57 .size name, .-name 58 #endif 59 60 /* If symbol 'name' is treated as a subroutine (gets called, and returns) 61 * then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of 62 * static analysis tools such as stack depth analyzer. 63 */ 64 #ifndef ENDPROC 65 #define ENDPROC(name) \ 66 .type name, @function; \ 67 END(name) 68 #endif 69 70 #endif 71 72 #define NORET_TYPE /**/ 73 #define ATTRIB_NORET __attribute__((noreturn)) 74 #define NORET_AND noreturn, 75 76 #endif 77