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| author | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-14 16:29:08 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-14 16:29:08 +1100 |
| commit | c088f4e9da74b901f7ed1749ad697d77622ed0f9 (patch) | |
| tree | 84cddf20369f82f10c1c3712e6cce20dd1b9d863 /arch/mips/include/asm/stackframe.h | |
| parent | ce79735c12d62c3cda38eb31762cf98e87c7b087 (diff) | |
| parent | a6525042bfdfcab128bd91fad264de10fd24a55e (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/mips/include/asm/stackframe.h')
| -rw-r--r-- | arch/mips/include/asm/stackframe.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h index 4c37c4e5f72..db0fa7b5aea 100644 --- a/arch/mips/include/asm/stackframe.h +++ b/arch/mips/include/asm/stackframe.h @@ -194,6 +194,19 @@ LONG_S $31, PT_R31(sp) ori $28, sp, _THREAD_MASK xori $28, _THREAD_MASK +#ifdef CONFIG_CPU_CAVIUM_OCTEON + .set mips64 + pref 0, 0($28) /* Prefetch the current pointer */ + pref 0, PT_R31(sp) /* Prefetch the $31(ra) */ + /* The Octeon multiplier state is affected by general multiply + instructions. It must be saved before and kernel code might + corrupt it */ + jal octeon_mult_save + LONG_L v1, 0($28) /* Load the current pointer */ + /* Restore $31(ra) that was changed by the jal */ + LONG_L ra, PT_R31(sp) + pref 0, 0(v1) /* Prefetch the current thread */ +#endif .set pop .endm @@ -324,6 +337,10 @@ DVPE 5 # dvpe a1 jal mips_ihb #endif /* CONFIG_MIPS_MT_SMTC */ +#ifdef CONFIG_CPU_CAVIUM_OCTEON + /* Restore the Octeon multiplier state */ + jal octeon_mult_restore +#endif mfc0 a0, CP0_STATUS ori a0, STATMASK xori a0, STATMASK |