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authorRalf Baechle <ralf@linux-mips.org>2006-04-05 04:45:45 -0400
committerRalf Baechle <ralf@linux-mips.org>2006-04-18 22:14:22 -0400
commitbce1a28686ed6527977a198f698278b67c6bf9ec (patch)
tree814c2a32011c8f7279fb3244cf6215e1dd82a95d /arch/mips/kernel
parenta682a2417007ad6265cd71b97b751753fd10e2fb (diff)
[MIPS] R2: Instruction hazard barrier.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
-rw-r--r--arch/mips/kernel/entry.S15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index 371571f4f280..b1939a486d2c 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -119,3 +119,18 @@ syscall_exit_work:
119 li a1, 1 119 li a1, 1
120 jal do_syscall_trace 120 jal do_syscall_trace
121 b resume_userspace 121 b resume_userspace
122
123#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_MIPS_MT)
124
125/*
126 * MIPS32R2 Instruction Hazard Barrier - must be called
127 *
128 * For C code use the inline version named instruction_hazard().
129 */
130LEAF(mips_ihb)
131 .set mips32r2
132 jr.hb ra
133 nop
134 END(mips_ihb)
135
136#endif /* CONFIG_CPU_MIPSR2 or CONFIG_MIPS_MT */