Date: Thu, 25 Dec 2014 19:08:40 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r276212 - head/sys/arm/include Message-ID: <201412251908.sBPJ8ej0079939@svn.freebsd.org>
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Author: ian Date: Thu Dec 25 19:08:39 2014 New Revision: 276212 URL: https://svnweb.freebsd.org/changeset/base/276212 Log: Add macros for asm barrier instructions with arch-specific implementations. Modified: head/sys/arm/include/asm.h Modified: head/sys/arm/include/asm.h ============================================================================== --- head/sys/arm/include/asm.h Thu Dec 25 18:22:22 2014 (r276211) +++ head/sys/arm/include/asm.h Thu Dec 25 19:08:39 2014 (r276212) @@ -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_ */
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