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add initial kexec sources from kexec-prealpha-r2.tar.gz
[ms2-kexec] / abort-ev7.S
1 #include <linux/linkage.h>
2 #include <asm/assembler.h>
3 /*
4 * Function: v7_early_abort
5 *
6 * Params : r2 = address of aborted instruction
7 * : r3 = saved SPSR
8 *
9 * Returns : r0 = address of abort
10 * : r1 = FSR, bit 11 = write
11 * : r2-r8 = corrupted
12 * : r9 = preserved
13 * : sp = pointer to registers
14 *
15 * Purpose : obtain information about current aborted instruction.
16 */
17 .align 5
18 ENTRY(v7_early_abort)
19 /*
20 * The effect of data aborts on on the exclusive access monitor are
21 * UNPREDICTABLE. Do a CLREX to clear the state
22 */
23 clrex
24
25 mrc p15, 0, r1, c5, c0, 0 @ get FSR
26 mrc p15, 0, r0, c6, c0, 0 @ get FAR
27
28 /*
29 * V6 code adjusts the returned DFSR.
30 * New designs should not need to patch up faults.
31 */
32 mov pc, lr
33 ENDPROC(v7_early_abort)
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