9997:
.endm
+ .macro pabt_helper
+ mov r0, r2 @ pass address of aborted instruction.
+#ifdef MULTI_PABORT
+ ldr ip, .LCprocfns
+ mov lr, pc
+ ldr pc, [ip, #PROCESSOR_PABT_FUNC]
+#else
+ bl CPU_PABORT_HANDLER
+#endif
+ .endm
+
+ .macro dabt_helper
+
+ @
+ @ Call the processor-specific abort handler:
+ @
+ @ r2 - aborted context pc
+ @ r3 - aborted context cpsr
+ @
+ @ The abort handler must return the aborted address in r0, and
+ @ the fault status register in r1. r9 must be preserved.
+ @
+#ifdef MULTI_DABORT
+ ldr ip, .LCprocfns
+ mov lr, pc
+ ldr pc, [ip, #PROCESSOR_DABT_FUNC]
+#else
+ bl CPU_DABORT_HANDLER
+#endif
+ .endm
+
#ifdef CONFIG_KPROBES
.section .kprobes.text,"ax",%progbits
#else
tst r3, #PSR_I_BIT
biceq r9, r9, #PSR_I_BIT
- @
- @ Call the processor-specific abort handler:
- @
- @ r2 - aborted context pc
- @ r3 - aborted context cpsr
- @
- @ The abort handler must return the aborted address in r0, and
- @ the fault status register in r1. r9 must be preserved.
- @
-#ifdef MULTI_DABORT
- ldr r4, .LCprocfns
- mov lr, pc
- ldr pc, [r4, #PROCESSOR_DABT_FUNC]
-#else
- bl CPU_DABORT_HANDLER
-#endif
+ dabt_helper
@
@ set desired IRQ state, then call main handler
#ifdef CONFIG_TRACE_IRQFLAGS
bl trace_hardirqs_off
#endif
-#ifdef CONFIG_PREEMPT
- get_thread_info tsk
- ldr r8, [tsk, #TI_PREEMPT] @ get preempt count
- add r7, r8, #1 @ increment it
- str r7, [tsk, #TI_PREEMPT]
-#endif
irq_handler
+
#ifdef CONFIG_PREEMPT
- str r8, [tsk, #TI_PREEMPT] @ restore preempt count
+ get_thread_info tsk
+ ldr r8, [tsk, #TI_PREEMPT] @ get preempt count
ldr r0, [tsk, #TI_FLAGS] @ get flags
teq r8, #0 @ if preempt count != 0
movne r0, #0 @ force flags to 0
tst r3, #PSR_I_BIT
biceq r9, r9, #PSR_I_BIT
- mov r0, r2 @ pass address of aborted instruction.
-#ifdef MULTI_PABORT
- ldr r4, .LCprocfns
- mov lr, pc
- ldr pc, [r4, #PROCESSOR_PABT_FUNC]
-#else
- bl CPU_PABORT_HANDLER
-#endif
+ pabt_helper
debug_entry r1
msr cpsr_c, r9 @ Maybe enable interrupts
mov r2, sp @ regs
__dabt_usr:
usr_entry
kuser_cmpxchg_check
-
- @
- @ Call the processor-specific abort handler:
- @
- @ r2 - aborted context pc
- @ r3 - aborted context cpsr
- @
- @ The abort handler must return the aborted address in r0, and
- @ the fault status register in r1.
- @
-#ifdef MULTI_DABORT
- ldr r4, .LCprocfns
- mov lr, pc
- ldr pc, [r4, #PROCESSOR_DABT_FUNC]
-#else
- bl CPU_DABORT_HANDLER
-#endif
+ dabt_helper
@
@ IRQs on, then call the main handler
usr_entry
kuser_cmpxchg_check
- get_thread_info tsk
-#ifdef CONFIG_PREEMPT
- ldr r8, [tsk, #TI_PREEMPT] @ get preempt count
- add r7, r8, #1 @ increment it
- str r7, [tsk, #TI_PREEMPT]
+#ifdef CONFIG_IRQSOFF_TRACER
+ bl trace_hardirqs_off
#endif
irq_handler
-#ifdef CONFIG_PREEMPT
- ldr r0, [tsk, #TI_PREEMPT]
- str r8, [tsk, #TI_PREEMPT]
- teq r0, r7
- ARM( strne r0, [r0, -r0] )
- THUMB( movne r0, #0 )
- THUMB( strne r0, [r0] )
-#endif
-
+ get_thread_info tsk
mov why, #0
- b ret_to_user
+ b ret_to_user_from_irq
UNWIND(.fnend )
ENDPROC(__irq_usr)
.align 5
__pabt_usr:
usr_entry
-
- mov r0, r2 @ pass address of aborted instruction.
-#ifdef MULTI_PABORT
- ldr r4, .LCprocfns
- mov lr, pc
- ldr pc, [r4, #PROCESSOR_PABT_FUNC]
-#else
- bl CPU_PABORT_HANDLER
-#endif
+ pabt_helper
debug_entry r1
enable_irq @ Enable interrupts
mov r2, sp @ regs