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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-25 19:25:02 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-30 11:04:59 +0100 |
| commit | 8b4186160b7894ca4583f702a562856d5d9e9118 (patch) | |
| tree | d5937a74e6d3f0738c3ba7eb9383acf51202e62d /arch/arm/mm/pabort-v6.S | |
| parent | b059bdc39321696fe8f344acb7117d57fbd7b475 (diff) | |
ARM: entry: prefetch abort helper: pass aborted pc in r4 rather than r0
This avoids unnecessary instructions for CPUs which implement the IFAR
(instruction fault address register).
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.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/pabort-v6.S b/arch/arm/mm/pabort-v6.S index 06e3d1ef211..eaac1cb7c4c 100644 --- a/arch/arm/mm/pabort-v6.S +++ b/arch/arm/mm/pabort-v6.S @@ -4,7 +4,7 @@ /* * Function: v6_pabort * - * Params : r0 = address of aborted instruction + * Params : r4 = address of aborted instruction * * Returns : r0 = address of abort * : r1 = IFSR @@ -14,6 +14,7 @@ .align 5 ENTRY(v6_pabort) + mov r0, r4 mrc p15, 0, r1, c5, c0, 1 @ get IFSR mov pc, lr ENDPROC(v6_pabort) |