[U-Boot] [PATCH 1/2] powerpc: Stack Pointer must be 16 aligned

Joakim Tjernlund Joakim.Tjernlund at transmode.se
Fri Jul 20 11:20:45 CEST 2012


The PowerPC ABI mandates the SP to be 16 bytes aligned, make is so.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund at transmode.se>
---
 arch/powerpc/lib/board.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git arch/powerpc/lib/board.c arch/powerpc/lib/board.c
index d5b75e5..dc7cc40 100644
--- arch/powerpc/lib/board.c
+++ arch/powerpc/lib/board.c
@@ -521,9 +521,8 @@ void board_init_f(ulong bootflag)
 	addr_sp -= 16;
 	addr_sp &= ~0xF;
 	s = (ulong *) addr_sp;
-	*s-- = 0;
-	*s-- = 0;
-	addr_sp = (ulong) s;
+	*s = 0;   /* NULL Back Chain */
+	*--s = 0; /* NULL LR */
 	debug("Stack Pointer at: %08lx\n", addr_sp);
 
 	/*
-- 
1.7.3.4



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