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authorRichard Henderson <rth@twiddle.net>2017-06-23 14:20:01 -0700
committerMatt Turner <mattst88@gmail.com>2017-08-29 12:01:49 -0700
commit4606f68faff1b16734f9379937fc49ae289d4c6e (patch)
treeb3fba5c2240d6d822a6444a4ae2368ed5f79682e /arch/alpha/lib
parent4758ce82e66711b1a4557577e30a5f9b88d4a4b5 (diff)
downloadop-kernel-dev-4606f68faff1b16734f9379937fc49ae289d4c6e.zip
op-kernel-dev-4606f68faff1b16734f9379937fc49ae289d4c6e.tar.gz
alpha: Fix typo in ev6-copy_user.S
Patch 8525023121de4848b5f0a7d867ffeadbc477774d introduced a typo. That said, the identity AND insns added by that patch are more clearly written as MOV. At the same time, re-schedule the ev6 version so that the first dispatch can execute in parallel. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'arch/alpha/lib')
-rw-r--r--arch/alpha/lib/copy_user.S2
-rw-r--r--arch/alpha/lib/ev6-copy_user.S7
2 files changed, 5 insertions, 4 deletions
diff --git a/arch/alpha/lib/copy_user.S b/arch/alpha/lib/copy_user.S
index 159f1b7..c277a1a 100644
--- a/arch/alpha/lib/copy_user.S
+++ b/arch/alpha/lib/copy_user.S
@@ -34,7 +34,7 @@
.ent __copy_user
__copy_user:
.prologue 0
- and $18,$18,$0
+ mov $18,$0
and $16,7,$3
beq $0,$35
beq $3,$36
diff --git a/arch/alpha/lib/ev6-copy_user.S b/arch/alpha/lib/ev6-copy_user.S
index 35e6710..954ca03 100644
--- a/arch/alpha/lib/ev6-copy_user.S
+++ b/arch/alpha/lib/ev6-copy_user.S
@@ -45,9 +45,10 @@
# Pipeline info: Slotting & Comments
__copy_user:
.prologue 0
- andq $18, $18, $0
- subq $18, 32, $1 # .. E .. .. : Is this going to be a small copy?
- beq $0, $zerolength # U .. .. .. : U L U L
+ mov $18, $0 # .. .. .. E
+ subq $18, 32, $1 # .. .. E. .. : Is this going to be a small copy?
+ nop # .. E .. ..
+ beq $18, $zerolength # U .. .. .. : U L U L
and $16,7,$3 # .. .. .. E : is leading dest misalignment
ble $1, $onebyteloop # .. .. U .. : 1st branch : small amount of data
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