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authorRalf Baechle <ralf@linux-mips.org>2005-07-12 18:35:38 +0000
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 19:31:46 +0100
commitcc61c1fede7d02cb8133ab0952ca3f3ba1f7fbb1 (patch)
tree9ad2708ba9ce5038dd6df888d1fc69de055c35fd /include/asm-mips/hazards.h
parentbbc7f22f6dca8a075b565ade49e9a982f89707c3 (diff)
downloadop-kernel-dev-cc61c1fede7d02cb8133ab0952ca3f3ba1f7fbb1.zip
op-kernel-dev-cc61c1fede7d02cb8133ab0952ca3f3ba1f7fbb1.tar.gz
MIPS R2 instruction hazard handling.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/hazards.h')
-rw-r--r--include/asm-mips/hazards.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h
index 181f08de..f63d824 100644
--- a/include/asm-mips/hazards.h
+++ b/include/asm-mips/hazards.h
@@ -228,6 +228,22 @@ __asm__(
#endif
+#if defined(CONFIG_CPU_MIPS32_R2) || defined (CONFIG_CPU_MIPS64_R2)
+#define instruction_hazard() \
+do { \
+__label__ __next; \
+ __asm__ __volatile__( \
+ " jr.hb %0 \n" \
+ : \
+ : "r" (&&__next)); \
+__next: \
+ ; \
+} while (0)
+
+#else
+#define instruction_hazard() do { } while (0)
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_HAZARDS_H */
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