34 lines
774 B
ArmAsm
34 lines
774 B
ArmAsm
|
#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
|
||
|
|
ENDPROC(v7_early_abort)
|