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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-06-26 07:37:35 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-02 05:56:10 -0400
commit8dfe7ac96fedd4f5219879f63a8a546a33609daf (patch)
treec723c0845d9f2080d9a0517bd2a94014870d7134 /arch/arm/mm/pabort-v6.S
parentd9600c99c549732a501cb727157800623a06175d (diff)
ARM: entry: prefetch abort: tail-call the main prefetch abort handler
Tail-call the main C prefetch abort handler code from the per-CPU helper code. Also note that the helper function becomes ABI compliant in terms of the registers preserved. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/pabort-v6.S')
-rw-r--r--arch/arm/mm/pabort-v6.S9
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/mm/pabort-v6.S b/arch/arm/mm/pabort-v6.S
index eaac1cb7c4cc..9627646ce783 100644
--- a/arch/arm/mm/pabort-v6.S
+++ b/arch/arm/mm/pabort-v6.S
@@ -4,10 +4,11 @@
4/* 4/*
5 * Function: v6_pabort 5 * Function: v6_pabort
6 * 6 *
7 * Params : r4 = address of aborted instruction 7 * Params : r2 = pt_regs
8 * : r4 = address of aborted instruction
9 * : r5 = psr for parent context
8 * 10 *
9 * Returns : r0 = address of abort 11 * Returns : r4 - r11, r13 preserved
10 * : r1 = IFSR
11 * 12 *
12 * Purpose : obtain information about current prefetch abort. 13 * Purpose : obtain information about current prefetch abort.
13 */ 14 */
@@ -16,5 +17,5 @@
16ENTRY(v6_pabort) 17ENTRY(v6_pabort)
17 mov r0, r4 18 mov r0, r4
18 mrc p15, 0, r1, c5, c0, 1 @ get IFSR 19 mrc p15, 0, r1, c5, c0, 1 @ get IFSR
19 mov pc, lr 20 b do_PrefetchAbort
20ENDPROC(v6_pabort) 21ENDPROC(v6_pabort)