From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 03/23] ARM: entry: prefetch/data abort helpers: convert to macros
Date: Wed, 29 Jun 2011 10:19:54 +0100 [thread overview]
Message-ID: <E1Qbqw6-0002Es-3W@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20110629091853.GK21898@n2100.arm.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
arch/arm/kernel/entry-armv.S | 85 +++++++++++++++++------------------------
1 files changed, 35 insertions(+), 50 deletions(-)
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 90c62cd..dbe9eb8 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -44,6 +44,37 @@
9997:
.endm
+ .macro pabt_helper
+ 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
+ .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 r4, .LCprocfns
+ mov lr, pc
+ ldr pc, [r4, #PROCESSOR_DABT_FUNC]
+#else
+ bl CPU_DABORT_HANDLER
+#endif
+ .endm
+
#ifdef CONFIG_KPROBES
.section .kprobes.text,"ax",%progbits
#else
@@ -159,22 +190,7 @@ __dabt_svc:
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
@@ -298,14 +314,7 @@ __pabt_svc:
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
@@ -401,23 +410,7 @@ ENDPROC(__pabt_svc)
__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
@@ -682,15 +675,7 @@ ENDPROC(__und_usr_unknown)
.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
--
1.7.4.4
next prev parent reply other threads:[~2011-06-29 9:19 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-29 9:18 [PATCH 00/23] entry assembly cleanups Russell King - ARM Linux
2011-06-29 9:19 ` [PATCH 01/23] ARM: entry: remove unused irq_prio_table macro Russell King - ARM Linux
2011-06-29 9:19 ` [PATCH 02/23] ARM: entry: shark: don't directly reference registers in macros Russell King - ARM Linux
2011-06-29 9:19 ` Russell King - ARM Linux [this message]
2011-06-29 9:20 ` [PATCH 00/23] entry assembly cleanups Russell King - ARM Linux
2011-06-29 9:20 ` [PATCH 04/23] ARM: entry: prefetch/data abort helpers: avoid corrupting r4 Russell King - ARM Linux
2011-06-29 9:20 ` [PATCH 05/23] ARM: entry: abort-macro: specify registers to be used for macros Russell King - ARM Linux
2011-06-29 9:20 ` [PATCH 06/23] ARM: entry: abort-macro: simplify do_ldrd_abort Russell King - ARM Linux
2011-06-29 9:21 ` [PATCH 07/23] ARM: entry: no need to increase preempt count for IRQ handlers Russell King - ARM Linux
2011-06-29 9:21 ` [PATCH 08/23] ARM: entry: no need to check parent IRQ mask in IRQ handler return Russell King - ARM Linux
2011-06-29 9:21 ` [PATCH 09/23] ARM: entry: rejig register allocation in exception entry handlers Russell King - ARM Linux
2011-06-29 9:22 ` [PATCH 10/23] ARM: entry: prefetch abort helper: pass aborted pc in r4 rather than r0 Russell King - ARM Linux
2011-06-29 9:22 ` [PATCH 11/23] ARM: entry: avoid enabling interrupts in prefetch/data abort handlers Russell King - ARM Linux
2011-06-29 20:05 ` Will Deacon
2011-06-30 9:27 ` Russell King - ARM Linux
2011-06-30 21:51 ` Will Deacon
2011-06-29 9:22 ` [PATCH 12/23] ARM: entry: instrument svc undefined exception handler with irqtrace Russell King - ARM Linux
2011-06-29 9:23 ` [PATCH 13/23] ARM: entry: instrument usr exception handlers with irqsoff tracing Russell King - ARM Linux
2011-06-29 9:23 ` [PATCH 14/23] ARM: entry: consolidate trace_hardirqs_off into (svc|usr)_entry macros Russell King - ARM Linux
2011-06-29 9:23 ` [PATCH 15/23] ARM: entry: re-allocate registers in irq entry assembly macros Russell King - ARM Linux
2011-06-29 9:24 ` [PATCH 16/23] ARM: entry: prefetch abort: tail-call the main prefetch abort handler Russell King - ARM Linux
2011-06-29 9:24 ` [PATCH 17/23] ARM: entry: data abort: arrange for CPU abort helpers to take pc/psr in r4/r5 Russell King - ARM Linux
2011-06-29 9:24 ` [PATCH 18/23] ARM: entry: data abort: avoid using r2 in abort helpers Russell King - ARM Linux
2011-06-29 9:25 ` [PATCH 19/23] ARM: entry: data abort: tail-call the main data abort handler Russell King - ARM Linux
2011-06-29 9:25 ` [PATCH 20/23] ARM: entry: data abort: use r2 as base of pt_regs rather than stack Russell King - ARM Linux
2011-06-29 9:25 ` [PATCH 21/23] ARM: entry: data abort: always use r6 for offset Russell King - ARM Linux
2011-06-29 9:26 ` [PATCH 22/23] ARM: entry: data abort: ensure r5 is preserved by abort functions Russell King - ARM Linux
2011-06-29 9:26 ` [PATCH 23/23] ARM: entry: no need to reload the SPSR value from struct pt_regs Russell King - ARM Linux
2011-06-29 14:53 ` [PATCH 00/23] entry assembly cleanups Jean-Christophe PLAGNIOL-VILLARD
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