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 00000000000..eb90bce38e1
--- /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