1 #ifndef __ASM_LINKAGE_H 2 #define __ASM_LINKAGE_H 3 4 #define __ALIGN .align 4 5 #define __ALIGN_STR ".align 4" 6 7 /* 8 * Make sure the compiler doesn't do anything stupid with the 9 * arguments on the stack - they are owned by the *caller*, not 10 * the callee. This just fools gcc into not spilling into them, 11 * and keeps it from doing tailcall recursion and/or using the 12 * stack slots for temporaries, since they are live and "used" 13 * all the way to the end of the function. 14 */ 15 #define asmlinkage_protect(n, ret, args...) \ 16 __asmlinkage_protect##n(ret, ##args) 17 #define __asmlinkage_protect_n(ret, args...) \ 18 __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args) 19 #define __asmlinkage_protect0(ret) \ 20 __asmlinkage_protect_n(ret) 21 #define __asmlinkage_protect1(ret, arg1) \ 22 __asmlinkage_protect_n(ret, "m" (arg1)) 23 #define __asmlinkage_protect2(ret, arg1, arg2) \ 24 __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2)) 25 #define __asmlinkage_protect3(ret, arg1, arg2, arg3) \ 26 __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3)) 27 #define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \ 28 __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ 29 "m" (arg4)) 30 #define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \ 31 __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ 32 "m" (arg4), "m" (arg5)) 33 #define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \ 34 __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ 35 "m" (arg4), "m" (arg5), "m" (arg6)) 36 37 #endif 38