Commit 7fec9f5d authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/vdso: Save and restore TOC pointer on PPC64 



On PPC64, the TOC pointer needs to be saved and restored.

Suggested-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201126131006.2431205-7-mpe@ellerman.id.au
parent ce7d8056

arch/powerpc/include/asm/vdso/gettimeofday.h

+12 −0
Original line number Diff line number Diff line
@@ -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

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