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authorVitaly Kuzmichev <vkuzmichev@mvista.com>2010-06-15 22:18:11 +0400
committerWolfgang Denk <wd@denx.de>2010-06-22 22:15:07 +0200
commita71da1b6c96205549ca2e7cf991e2340181bbfcf (patch)
tree4956c3b08860ad3467ac68d51ec2d2c1f190ab6d /arch/sparc
parent96b35730a43160afa025ac405961737dbb0682b4 (diff)
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ARM: Align stack to 8 bytes
The ARM ABI requires that the stack be aligned to 8 bytes as it is noted in Procedure Call Standard for the ARM Architecture: http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042d/index.html Unaligned SP also causes the problem with variable-length arrays allocation when VLA address becomes less than stack pointer during aligning of this address, so the next 'push' in the stack overwrites first 4 bytes of VLA. Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com> Tested on tx25(mx25), imx27lite(mx27), qong(mx31) and trab(s3c2400) Tested-by: Wolfgang Denk <wd@denx.de>
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