1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Macros for 32/64-bit neutral inline assembler 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef __ASM_LLSC_H 10*4882a593Smuzhiyun #define __ASM_LLSC_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <asm/isa-rev.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #if _MIPS_SZLONG == 32 15*4882a593Smuzhiyun #define __LL "ll " 16*4882a593Smuzhiyun #define __SC "sc " 17*4882a593Smuzhiyun #define __INS "ins " 18*4882a593Smuzhiyun #define __EXT "ext " 19*4882a593Smuzhiyun #elif _MIPS_SZLONG == 64 20*4882a593Smuzhiyun #define __LL "lld " 21*4882a593Smuzhiyun #define __SC "scd " 22*4882a593Smuzhiyun #define __INS "dins " 23*4882a593Smuzhiyun #define __EXT "dext " 24*4882a593Smuzhiyun #endif 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun /* 27*4882a593Smuzhiyun * Using a branch-likely instruction to check the result of an sc instruction 28*4882a593Smuzhiyun * works around a bug present in R10000 CPUs prior to revision 3.0 that could 29*4882a593Smuzhiyun * cause ll-sc sequences to execute non-atomically. 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun #ifdef CONFIG_WAR_R10000_LLSC 32*4882a593Smuzhiyun # define __SC_BEQZ "beqzl " 33*4882a593Smuzhiyun #elif MIPS_ISA_REV >= 6 34*4882a593Smuzhiyun # define __SC_BEQZ "beqzc " 35*4882a593Smuzhiyun #else 36*4882a593Smuzhiyun # define __SC_BEQZ "beqz " 37*4882a593Smuzhiyun #endif 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #endif /* __ASM_LLSC_H */ 40