commit adb7027af24a64edea3b29f4591d79b0505560f7
author Soby Mathew <soby.mathew@arm.com> Tue Dec 06 12:10:51 2016 +0000
committer Soby Mathew <soby.mathew@arm.com> Mon Dec 12 17:57:37 2016 +0000
tree a07820ccf5f8a93356566fec4b98fd1ae3a671ee
parent cd8a5b8da144b19fde0239d9ef0d77ea2467b5c0

AArch32: Fix the stack alignment issue

The AArch32 Procedure call Standard mandates that the stack must be aligned
to 8 byte boundary at external interfaces. This patch does the required
changes.

This problem was detected when a crash was encountered in
`psci_print_power_domain_map()` while printing 64 bit values. Aligning
the stack to 8 byte boundary resolved the problem.

Fixes ARM-Software/tf-issues#437

Change-Id: I517bd8203601bb88e9311bd36d477fb7b3efb292
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

include/lib/aarch32/smcc_helpers.h

diff --git a/include/lib/aarch32/smcc_helpers.h b/include/lib/aarch32/smcc_helpers.h
index 5aeca22..4f9d814 100644
--- a/include/lib/aarch32/smcc_helpers.h
+++ b/include/lib/aarch32/smcc_helpers.h
@@ -39,6 +39,7 @@
 #define SMC_CTX_GPREG_R2	0x8
 #define SMC_CTX_GPREG_R3	0xC
 #define SMC_CTX_GPREG_R4	0x10
+#define SMC_CTX_GPREG_R5	0x14
 #define SMC_CTX_SP_USR		0x34
 #define SMC_CTX_SPSR_MON	0x78
 #define SMC_CTX_LR_MON		0x7C