18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef __ASM_LINKAGE_H 38c2ecf20Sopenharmony_ci#define __ASM_LINKAGE_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#define __ALIGN .align 4 68c2ecf20Sopenharmony_ci#define __ALIGN_STR ".align 4" 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci/* 98c2ecf20Sopenharmony_ci * Make sure the compiler doesn't do anything stupid with the 108c2ecf20Sopenharmony_ci * arguments on the stack - they are owned by the *caller*, not 118c2ecf20Sopenharmony_ci * the callee. This just fools gcc into not spilling into them, 128c2ecf20Sopenharmony_ci * and keeps it from doing tailcall recursion and/or using the 138c2ecf20Sopenharmony_ci * stack slots for temporaries, since they are live and "used" 148c2ecf20Sopenharmony_ci * all the way to the end of the function. 158c2ecf20Sopenharmony_ci */ 168c2ecf20Sopenharmony_ci#define asmlinkage_protect(n, ret, args...) \ 178c2ecf20Sopenharmony_ci __asmlinkage_protect##n(ret, ##args) 188c2ecf20Sopenharmony_ci#define __asmlinkage_protect_n(ret, args...) \ 198c2ecf20Sopenharmony_ci __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args) 208c2ecf20Sopenharmony_ci#define __asmlinkage_protect0(ret) \ 218c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret) 228c2ecf20Sopenharmony_ci#define __asmlinkage_protect1(ret, arg1) \ 238c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret, "m" (arg1)) 248c2ecf20Sopenharmony_ci#define __asmlinkage_protect2(ret, arg1, arg2) \ 258c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2)) 268c2ecf20Sopenharmony_ci#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \ 278c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3)) 288c2ecf20Sopenharmony_ci#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \ 298c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ 308c2ecf20Sopenharmony_ci "m" (arg4)) 318c2ecf20Sopenharmony_ci#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \ 328c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ 338c2ecf20Sopenharmony_ci "m" (arg4), "m" (arg5)) 348c2ecf20Sopenharmony_ci#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \ 358c2ecf20Sopenharmony_ci __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \ 368c2ecf20Sopenharmony_ci "m" (arg4), "m" (arg5), "m" (arg6)) 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#endif 39