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ARM: entry: data abort: always use r6 for offset

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-06-27 12:23:11 +01:00
parent e22c12f914
commit 108f6af0a8
2 changed files with 6 additions and 6 deletions
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6
arch/arm/mm/abort-lv4t.S
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@ -102,13 +102,13 @@ ENTRY(v4t_late_abort)
tst r8, #1 << 21 @ check writeback bit
beq do_DataAbort @ no writeback -> no fixup
.data_arm_lateldrpostconst:
movs r9, r8, lsl #20 @ Get offset
movs r6, r8, lsl #20 @ Get offset
beq do_DataAbort @ zero -> no fixup
and r5, r8, #15 << 16 @ Extract 'n' from instruction
ldr r7, [r2, r5, lsr #14] @ Get register 'Rn'
tst r8, #1 << 23 @ Check U bit
subne r7, r7, r9, lsr #20 @ Undo increment
addeq r7, r7, r9, lsr #20 @ Undo decrement
subne r7, r7, r6, lsr #20 @ Undo increment
addeq r7, r7, r6, lsr #20 @ Undo decrement
str r7, [r2, r5, lsr #14] @ Put register 'Rn'
b do_DataAbort

6
arch/arm/mm/proc-arm6_7.S
View file

@ -116,13 +116,13 @@ ENTRY(cpu_arm6_data_abort)
tst r8, #1 << 21 @ check writeback bit
beq do_DataAbort @ no writeback -> no fixup
.data_arm_lateldrpostconst:
movs r9, r8, lsl #20 @ Get offset
movs r6, r8, lsl #20 @ Get offset
beq do_DataAbort @ zero -> no fixup
and r5, r8, #15 << 16 @ Extract 'n' from instruction
ldr r7, [r2, r5, lsr #14] @ Get register 'Rn'
tst r8, #1 << 23 @ Check U bit
subne r7, r7, r9, lsr #20 @ Undo increment
addeq r7, r7, r9, lsr #20 @ Undo decrement
subne r7, r7, r6, lsr #20 @ Undo increment
addeq r7, r7, r6, lsr #20 @ Undo decrement
str r7, [r2, r5, lsr #14] @ Put register 'Rn'
b do_DataAbort