From 7fec9f5d41979dbe273ec337327d5939449562e7 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Fri, 27 Nov 2020 00:10:04 +1100 Subject: [PATCH] powerpc/vdso: Save and restore TOC pointer on PPC64 On PPC64, the TOC pointer needs to be saved and restored. Suggested-by: Michael Ellerman Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201126131006.2431205-7-mpe@ellerman.id.au --- arch/powerpc/include/asm/vdso/gettimeofday.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/powerpc/include/asm/vdso/gettimeofday.h b/arch/powerpc/include/asm/vdso/gettimeofday.h index 43dd1dc47c37..6f56a6bce615 100644 --- a/arch/powerpc/include/asm/vdso/gettimeofday.h +++ b/arch/powerpc/include/asm/vdso/gettimeofday.h @@ -19,10 +19,16 @@ .cfi_register lr, r0 PPC_STLU r1, -PPC_MIN_STKFRM(r1) PPC_STL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) +#ifdef __powerpc64__ + PPC_STL r2, PPC_MIN_STKFRM + STK_GOT(r1) +#endif get_datapage r5, r0 addi r5, r5, VDSO_DATA_OFFSET bl DOTSYM(\funct) PPC_LL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) +#ifdef __powerpc64__ + PPC_LL r2, PPC_MIN_STKFRM + STK_GOT(r1) +#endif cmpwi r3, 0 mtlr r0 .cfi_restore lr @@ -42,10 +48,16 @@ .cfi_register lr, r0 PPC_STLU r1, -PPC_MIN_STKFRM(r1) PPC_STL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) +#ifdef __powerpc64__ + PPC_STL r2, PPC_MIN_STKFRM + STK_GOT(r1) +#endif get_datapage r4, r0 addi r4, r4, VDSO_DATA_OFFSET bl DOTSYM(\funct) PPC_LL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) +#ifdef __powerpc64__ + PPC_LL r2, PPC_MIN_STKFRM + STK_GOT(r1) +#endif crclr so mtlr r0 .cfi_restore lr -- 2.11.0