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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-26 16:01:26 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-07-02 10:56:11 +0100 |
| commit | da7404725781bc7c736e10cae5521e5604e222a5 (patch) | |
| tree | e816cd79e1b09ddcbd41b7cd5b3c6c9c9bd5eb98 /arch/arm/mm/abort-ev5tj.S | |
| parent | 0d147db0c127c561f8f9ead9f3c1ec38f89f1040 (diff) | |
| download | linux-da7404725781bc7c736e10cae5521e5604e222a5.tar.bz2 | |
ARM: entry: data abort: tail-call the main data abort handler
Tail-call the main C data abort handler code from the per-CPU helper
code. Update the comments in the code wrt the new calling and return
register state.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/abort-ev5tj.S')
| -rw-r--r-- | arch/arm/mm/abort-ev5tj.S | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/arm/mm/abort-ev5tj.S b/arch/arm/mm/abort-ev5tj.S index ccfbc937054d..4006b7a61264 100644 --- a/arch/arm/mm/abort-ev5tj.S +++ b/arch/arm/mm/abort-ev5tj.S @@ -4,14 +4,11 @@ /* * Function: v5tj_early_abort * - * Params : r4 = aborted context pc + * Params : r2 = pt_regs + * : r4 = aborted context pc * : r5 = aborted context psr * - * Returns : r0 = address of abort - * : r1 = FSR, bit 11 = write - * : r2-r8 = corrupted - * : r9 = preserved - * : sp = pointer to registers + * Returns : r4 - r11, r13 preserved * * Purpose : obtain information about current aborted instruction. * Note: we read user space. This means we might cause a data @@ -24,10 +21,10 @@ ENTRY(v5tj_early_abort) mrc p15, 0, r0, c6, c0, 0 @ get FAR bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR tst r5, #PSR_J_BIT @ Java? - movne pc, lr + bne do_DataAbort do_thumb_abort fsr=r1, pc=r4, psr=r5, tmp=r3 ldreq r3, [r4] @ read aborted ARM instruction do_ldrd_abort tmp=ip, insn=r3 tst r3, #1 << 20 @ L = 0 -> write orreq r1, r1, #1 << 11 @ yes. - mov pc, lr + b do_DataAbort |