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 18ENTRY(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 33ENDPROC(v7_early_abort) 34