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| author | ian <ian@FreeBSD.org> | 2014-12-25 19:08:39 +0000 |
|---|---|---|
| committer | ian <ian@FreeBSD.org> | 2014-12-25 19:08:39 +0000 |
| commit | bb5aaad6a927a582b305ddd1b93525a48f577229 (patch) | |
| tree | fb47b91af9f465c3d45f9b9b6de1deb4f81c026d /sys/arm | |
| parent | ac5b1bdf7176022aa8b487a5c378684521c29db6 (diff) | |
| download | FreeBSD-src-bb5aaad6a927a582b305ddd1b93525a48f577229.zip FreeBSD-src-bb5aaad6a927a582b305ddd1b93525a48f577229.tar.gz | |
Add macros for asm barrier instructions with arch-specific implementations.
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/include/asm.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/arm/include/asm.h b/sys/arm/include/asm.h index 506e99a..deaccec 100644 --- a/sys/arm/include/asm.h +++ b/sys/arm/include/asm.h @@ -39,6 +39,7 @@ #ifndef _MACHINE_ASM_H_ #define _MACHINE_ASM_H_ #include <sys/cdefs.h> +#include <machine/sysreg.h> #define _C_LABEL(x) x #define _ASM_LABEL(x) x @@ -221,4 +222,18 @@ # define RETc(c) mov##c pc, lr #endif +#if __ARM_ARCH >= 7 +#define ISB isb +#define DSB dsb +#define DMB dmb +#elif __ARM_ARCH == 6 +#define ISB mcr CP15_CP15ISB +#define DSB mcr CP15_CP15DSB +#define DMB mcr CP15_CP15DMB +#else +#define ISB mcr CP15_CP15ISB +#define DSB mcr CP15_CP15DSB /* DSB and DMB are the */ +#define DMB mcr CP15_CP15DSB /* same prior to v6.*/ +#endif + #endif /* !_MACHINE_ASM_H_ */ |
