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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-05-21 18:06:42 +0100
committerUwe Kleine-König <u.kleine-koenig@pengutronix.de>2013-04-17 21:44:46 +0200
commit19c4d593f0b4bd46f6d923a3e514719982a22058 (patch)
treed49347eeaf897139242020418fd104f1c2daed91 /arch/arm/kernel/entry-common.S
parent55bdd694116597d2f16510b121463cd579ba78da (diff)
downloadlinux-linaro-stable-19c4d593f0b4bd46f6d923a3e514719982a22058.tar.gz
ARM: ARMv7-M: Add support for exception handling
This patch implements the exception handling for the ARMv7-M architecture (pretty different from the A or R profiles). It bases on work done earlier by Catalin for 2.6.33 but was nearly completely rewritten to use a pt_regs layout compatible to the A profile. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Jonathan Austin <jonathan.austin@arm.com> Tested-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
-rw-r--r--arch/arm/kernel/entry-common.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 3248cde504ed..c45e0027613b 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -339,6 +339,9 @@ ENDPROC(ftrace_stub)
.align 5
ENTRY(vector_swi)
+#ifdef CONFIG_CPU_V7M
+ v7m_exception_entry
+#else
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12} @ Calling r0 - r12
ARM( add r8, sp, #S_PC )
@@ -349,6 +352,7 @@ ENTRY(vector_swi)
str lr, [sp, #S_PC] @ Save calling PC
str r8, [sp, #S_PSR] @ Save CPSR
str r0, [sp, #S_OLD_R0] @ Save OLD_R0
+#endif
zero_fp
/*