1 #include <linux/linkage.h>
2 #include <asm/assembler.h>
3 #include "abort-macro.S"
5 * Function: v6_early_abort
7 * Params : r2 = address of aborted instruction
10 * Returns : r0 = address of abort
11 * : r1 = FSR, bit 11 = write
14 * : sp = pointer to registers
16 * Purpose : obtain information about current aborted instruction.
17 * Note: we read user space. This means we might cause a data
18 * abort here if the I-TLB and D-TLB aren't seeing the same
19 * picture. Unfortunately, this does happen. We live with it.
23 #ifdef CONFIG_CPU_MPCORE
26 strex r0, r1, [sp] @ Clear the exclusive monitor
28 mrc p15, 0, r1, c5, c0, 0 @ get FSR
29 mrc p15, 0, r0, c6, c0, 0 @ get FAR
31 * Faulty SWP instruction on 1136 doesn't set bit 11 in DFSR.
32 * The test below covers all the write situations, including Java bytecodes
34 bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR
35 tst r3, #PSR_J_BIT @ Java?
38 ldreq r3, [r2] @ read aborted ARM instruction
40 tst r3, #1 << 20 @ L = 0 -> write
41 orreq r1, r1, #1 << 11 @ yes.