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-rw-r--r--arch/arm/mm/abort-ev4.S17
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/arm/mm/abort-ev4.S b/arch/arm/mm/abort-ev4.S
index 4f18f9e87bae..54473cd4aba9 100644
--- a/arch/arm/mm/abort-ev4.S
+++ b/arch/arm/mm/abort-ev4.S
@@ -3,14 +3,11 @@
3/* 3/*
4 * Function: v4_early_abort 4 * Function: v4_early_abort
5 * 5 *
6 * Params : r2 = address of aborted instruction 6 * Params : r2 = pt_regs
7 * : r3 = saved SPSR 7 * : r4 = aborted context pc
8 * : r5 = aborted context psr
8 * 9 *
9 * Returns : r0 = address of abort 10 * Returns : r4 - r11, r13 preserved
10 * : r1 = FSR, bit 11 = write
11 * : r2-r8 = corrupted
12 * : r9 = preserved
13 * : sp = pointer to registers
14 * 11 *
15 * Purpose : obtain information about current aborted instruction. 12 * Purpose : obtain information about current aborted instruction.
16 * Note: we read user space. This means we might cause a data 13 * Note: we read user space. This means we might cause a data
@@ -21,10 +18,8 @@
21ENTRY(v4_early_abort) 18ENTRY(v4_early_abort)
22 mrc p15, 0, r1, c5, c0, 0 @ get FSR 19 mrc p15, 0, r1, c5, c0, 0 @ get FSR
23 mrc p15, 0, r0, c6, c0, 0 @ get FAR 20 mrc p15, 0, r0, c6, c0, 0 @ get FAR
24 ldr r3, [r2] @ read aborted ARM instruction 21 ldr r3, [r4] @ read aborted ARM instruction
25 bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR 22 bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR
26 tst r3, #1 << 20 @ L = 1 -> write? 23 tst r3, #1 << 20 @ L = 1 -> write?
27 orreq r1, r1, #1 << 11 @ yes. 24 orreq r1, r1, #1 << 11 @ yes.
28 mov pc, lr 25 b do_DataAbort
29
30