[rtems commit] arm: Fix default exception handler

Sebastian Huber sebh at rtems.org
Tue Sep 3 08:34:27 UTC 2019


Module:    rtems
Branch:    master
Commit:    0b3dcb3b37eff6a8bbf07d0e29dfaa85c3a51bff
Changeset: http://git.rtems.org/rtems/commit/?id=0b3dcb3b37eff6a8bbf07d0e29dfaa85c3a51bff

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Tue Sep  3 10:11:21 2019 +0200

arm: Fix default exception handler

Keep the stack pointer properly 8-byte aligned.

---

 cpukit/score/cpu/arm/armv4-exception-default.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpukit/score/cpu/arm/armv4-exception-default.S b/cpukit/score/cpu/arm/armv4-exception-default.S
index efa8d13..848ffe4 100644
--- a/cpukit/score/cpu/arm/armv4-exception-default.S
+++ b/cpukit/score/cpu/arm/armv4-exception-default.S
@@ -137,8 +137,8 @@ save_more_context:
 	beq	1f
 
 	/* Save VFP context */
-	sub	sp, #(ARM_VFP_CONTEXT_SIZE + 4)
-	add	r4, sp, #4
+	sub	sp, #(ARM_VFP_CONTEXT_SIZE + 8)
+	add	r4, sp, #8
 	bic	r4, r4, #7
 	str	r4, [r3]
 	vmrs	r2, FPSCR




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