blob: c49738bc3bda2dca4e9c3c6b89dc5870dae58623 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Macros for 32/64-bit neutral inline assembler
*/
#ifndef __ASM_LLSC_H
#define __ASM_LLSC_H
#include <asm/isa-rev.h>
#if _MIPS_SZLONG == 32
#define __LL "ll "
#define __SC "sc "
#define __INS "ins "
#define __EXT "ext "
#elif _MIPS_SZLONG == 64
#define __LL "lld "
#define __SC "scd "
#define __INS "dins "
#define __EXT "dext "
#endif
/*
* Using a branch-likely instruction to check the result of an sc instruction
* works around a bug present in R10000 CPUs prior to revision 3.0 that could
* cause ll-sc sequences to execute non-atomically.
*/
#if R10000_LLSC_WAR
# define __SC_BEQZ "beqzl "
#elif MIPS_ISA_REV >= 6
# define __SC_BEQZ "beqzc "
#else
# define __SC_BEQZ "beqz "
#endif
#endif /* __ASM_LLSC_H */
|
