From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/arm/mm/abort-ev4t.S | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/arm/mm/abort-ev4t.S (limited to 'arch/arm/mm/abort-ev4t.S') diff --git a/arch/arm/mm/abort-ev4t.S b/arch/arm/mm/abort-ev4t.S new file mode 100644 index 000000000000..b6282548f922 --- /dev/null +++ b/arch/arm/mm/abort-ev4t.S @@ -0,0 +1,30 @@ +#include +#include +#include "abort-macro.S" +/* + * Function: v4t_early_abort + * + * Params : r2 = address of aborted instruction + * : r3 = saved SPSR + * + * Returns : r0 = address of abort + * : r1 = FSR, bit 11 = write + * : r2-r8 = corrupted + * : r9 = preserved + * : sp = pointer to registers + * + * Purpose : obtain information about current aborted instruction. + * Note: we read user space. This means we might cause a data + * abort here if the I-TLB and D-TLB aren't seeing the same + * picture. Unfortunately, this does happen. We live with it. + */ + .align 5 +ENTRY(v4t_early_abort) + mrc p15, 0, r1, c5, c0, 0 @ get FSR + mrc p15, 0, r0, c6, c0, 0 @ get FAR + do_thumb_abort + ldreq r3, [r2] @ read aborted ARM instruction + bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR + tst r3, #1 << 20 @ check write + orreq r1, r1, #1 << 11 + mov pc, lr -- cgit