1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Port on Texas Instruments TMS320C6x architecture 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated 6*4882a593Smuzhiyun * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun #ifndef _ASM_C6X_SWITCH_TO_H 9*4882a593Smuzhiyun #define _ASM_C6X_SWITCH_TO_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/linkage.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define prepare_to_switch() do { } while (0) 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun struct task_struct; 16*4882a593Smuzhiyun struct thread_struct; 17*4882a593Smuzhiyun asmlinkage void *__switch_to(struct thread_struct *prev, 18*4882a593Smuzhiyun struct thread_struct *next, 19*4882a593Smuzhiyun struct task_struct *tsk); 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun #define switch_to(prev, next, last) \ 22*4882a593Smuzhiyun do { \ 23*4882a593Smuzhiyun current->thread.wchan = (u_long) __builtin_return_address(0); \ 24*4882a593Smuzhiyun (last) = __switch_to(&(prev)->thread, \ 25*4882a593Smuzhiyun &(next)->thread, (prev)); \ 26*4882a593Smuzhiyun mb(); \ 27*4882a593Smuzhiyun current->thread.wchan = 0; \ 28*4882a593Smuzhiyun } while (0) 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #endif /* _ASM_C6X_SWITCH_TO_H */ 31