#ifndef _ASM_X86_LINKAGE_H #define _ASM_X86_LINKAGE_H #include <linux/stringify.h> #undef notrace #define notrace __attribute__((no_instrument_function)) #ifdef CONFIG_X86_32 #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0))) /* * Make sure the compiler doesn't do anything stupid with the * arguments on the stack - they are owned by the *caller*, not * the callee. This just fools gcc into not spilling into them, * and keeps it from doing tailcall recursion and/or using the * stack slots for temporaries, since they are live and "used" * all the way to the end of the function. * * NOTE! On x86-64, all the arguments are in registers, so this * only matters on a 32-bit kernel. */ #define asmlinkage_protect(n, ret, args...) \ __asmlinkage_protect##n(ret, ##args) #define __asmlinkage_protect_n(ret, args...) \ __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args) #define __asmlinkage_protect0(ret) \ __asmlinkage_protect_n(ret) #define __asmlinkage_protect1(ret, arg1) \ __asmlinkage_protect_n(ret, "m" (arg1)) #define __asmlinkage_protect2(ret, arg1, arg2) \ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2)) #define __asmlinkage_protect3(ret, arg1, arg2, arg3) \ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3)) #define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ "m" (arg4)) #define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ "m" (arg4), "m" (arg5)) #define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ "m" (arg4), "m" (arg5), "m" (arg6)) #endif /* CONFIG_X86_32 */ #ifdef __ASSEMBLY__ #define GLOBAL(name) \ .globl name; \ name: #if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16) #define __ALIGN .p2align 4, 0x90 #define __ALIGN_STR __stringify(__ALIGN) #endif #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_LINKAGE_H */