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| author | Catalin Marinas <catalin.marinas@arm.com> | 2007-05-09 01:27:46 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-05-09 01:55:53 +0400 |
| commit | bbe888864ec32435e93923c40b9d6ce2bb73844b (patch) | |
| tree | db607482fe5898da9a599368d0bbe579a56b272c /arch/arm/mm/abort-ev7.S | |
| parent | 5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff) | |
| download | linux-bbe888864ec32435e93923c40b9d6ce2bb73844b.tar.xz | |
[ARM] armv7: add support for ARMv7 cores.
This patch adds support for the ARMv7 cores.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/abort-ev7.S')
| -rw-r--r-- | arch/arm/mm/abort-ev7.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mm/abort-ev7.S b/arch/arm/mm/abort-ev7.S new file mode 100644 index 000000000000..eb90bce38e14 --- /dev/null +++ b/arch/arm/mm/abort-ev7.S @@ -0,0 +1,32 @@ +#include <linux/linkage.h> +#include <asm/assembler.h> +/* + * Function: v7_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. + */ + .align 5 +ENTRY(v7_early_abort) + /* + * The effect of data aborts on on the exclusive access monitor are + * UNPREDICTABLE. Do a CLREX to clear the state + */ + clrex + + mrc p15, 0, r1, c5, c0, 0 @ get FSR + mrc p15, 0, r0, c6, c0, 0 @ get FAR + + /* + * V6 code adjusts the returned DFSR. + * New designs should not need to patch up faults. + */ + mov pc, lr |