From 928d1d77f8623c120d8763e20e1ca58df9c5c4c6 Mon Sep 17 00:00:00 2001 From: Yuri Tikhonov Date: Thu, 21 Feb 2008 11:06:07 +0100 Subject: [PATCH] Fix CPU POST test failure The CPU POST test code (run from cpu_post_exec_31()) doesn't follow the ABI carefully, at least the CR3, CR4, and CR5 fields of CR are clobbered by it. The gcc-4.2 with its more aggressive optimization exposes this fact. This patch just saves the CR value before running the test code, so allowing it to do anything it wants with CR. Signed-off-by: Dmitry Rakhchev Acked-by: Yuri Tikhonov -- --- post/lib_ppc/asm.S | 3 +++ 1 file changed, 3 insertions(+) diff --git a/post/lib_ppc/asm.S b/post/lib_ppc/asm.S index 5e72b3418f..12791762ba 100644 --- a/post/lib_ppc/asm.S +++ b/post/lib_ppc/asm.S @@ -308,7 +308,10 @@ cpu_post_exec_31: lwz r3, 0(r4) lwz r4, 0(r5) mr r6, r7 + + mfcr r7 blrl + mtcr r7 lwz r7, 8(r1) stw r3, 0(r7) -- 2.25.1