Module: xenomai-2.5 Branch: master Commit: a5886b354dc18f054b187b58cfbacfb60bccaf47 URL: http://git.xenomai.org/?p=xenomai-2.5.git;a=commit;h=a5886b354dc18f054b187b58cfbacfb60bccaf47
Author: Philippe Gerum <r...@xenomai.org> Date: Sat Jan 22 18:09:10 2011 +0100 hal/powerpc: provide minimum stack frame on entry to kthreads This patch fixes the regression introduced by 90699565cbce. Xenomai kernel threads were not given any minimum stack frame, leading to random memory corruption, particularly on powerpc64. --- ksrc/arch/powerpc/switch_32.S | 1 + ksrc/arch/powerpc/switch_64.S | 1 + 2 files changed, 2 insertions(+), 0 deletions(-) diff --git a/ksrc/arch/powerpc/switch_32.S b/ksrc/arch/powerpc/switch_32.S index d2ab314..d170df4 100644 --- a/ksrc/arch/powerpc/switch_32.S +++ b/ksrc/arch/powerpc/switch_32.S @@ -193,6 +193,7 @@ same_current: #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) */ _GLOBAL(rthal_thread_trampoline) + stwu r1,-STACK_FRAME_OVERHEAD(r1) mr r3,r22 mtlr r23 blr diff --git a/ksrc/arch/powerpc/switch_64.S b/ksrc/arch/powerpc/switch_64.S index b15fa58..aaafaee 100644 --- a/ksrc/arch/powerpc/switch_64.S +++ b/ksrc/arch/powerpc/switch_64.S @@ -396,6 +396,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) #endif /* Linux >= 2.6.32 */ _GLOBAL(rthal_thread_trampoline) + stdu r1,-STACK_FRAME_OVERHEAD(r1) mr r3,r22 mr r2,r24 mtlr r23 _______________________________________________ Xenomai-git mailing list Xenomai-git@gna.org https://mail.gna.org/listinfo/xenomai-git