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| author | Attilio Rao <attilio@FreeBSD.org> | 2012-10-09 14:32:30 +0000 |
|---|---|---|
| committer | Attilio Rao <attilio@FreeBSD.org> | 2012-10-09 14:32:30 +0000 |
| commit | 3a4730256a96ac1a229a7fe1f6171f669fb1d000 (patch) | |
| tree | 18e9f31a3018a88b46e78d76a45d0953dea5276b /sys/mips | |
| parent | 6a762eb23ea5f31e65cfa12602937f39a14e9b0c (diff) | |
| download | src-3a4730256a96ac1a229a7fe1f6171f669fb1d000.tar.gz src-3a4730256a96ac1a229a7fe1f6171f669fb1d000.zip | |
Add an unified macro to deny ability from the compiler to reorder
instruction loads/stores at its will.
The macro __compiler_membar() is currently supported for both gcc and
clang, but kernel compilation will fail otherwise.
Reviewed by: bde, kib
Discussed with: dim, theraven
MFC after: 2 weeks
Notes
Notes:
svn path=/head/; revision=241374
Diffstat (limited to 'sys/mips')
| -rw-r--r-- | sys/mips/include/cpufunc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/mips/include/cpufunc.h b/sys/mips/include/cpufunc.h index 513237f9e37a..3611d6e11604 100644 --- a/sys/mips/include/cpufunc.h +++ b/sys/mips/include/cpufunc.h @@ -70,7 +70,7 @@ static __inline void mips_barrier(void) { #if defined(CPU_CNMIPS) || defined(CPU_RMI) || defined(CPU_NLM) - __asm __volatile("" : : : "memory"); + __compiler_membar(); #else __asm __volatile (".set noreorder\n\t" "nop\n\t" |