1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/linkage.h>
3 #include <asm/assembler.h>
4 /*
5 * Function: v4_early_abort
6 *
7 * Params : r2 = pt_regs
8 * : r4 = aborted context pc
9 * : r5 = aborted context psr
10 *
11 * Returns : r4 - r11, r13 preserved
12 *
13 * Purpose : obtain information about current
14 * Note: we read user space. This means we mi
15 * abort here if the I-TLB and D-TLB aren't se
16 * picture. Unfortunately, this does happen.
17 */
18 .align 5
19 ENTRY(v4_early_abort)
20 mrc p15, 0, r1, c5, c0, 0
21 mrc p15, 0, r0, c6, c0, 0
22 ldr r3, [r4]
23 uaccess_disable ip
24 bic r1, r1, #1 << 11 | 1 << 10
25 tst r3, #1 << 20
26 orreq r1, r1, #1 << 11
27 b do_DataAbort
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