diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-01-21 17:30:34 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-02-12 12:47:44 +0100 |
| commit | 692b21d78046851e75dc25bba773189c670b49c2 (patch) | |
| tree | 39885a4ed0a24c0066ed29459ff5a4bf1ccf4f79 /arch/powerpc/kernel | |
| parent | powerpc/vdso: Remove cvdso_call_time macro (diff) | |
| download | linux-692b21d78046851e75dc25bba773189c670b49c2.tar.xz linux-692b21d78046851e75dc25bba773189c670b49c2.zip | |
powerpc/vdso: Move cvdso_call macro into gettimeofday.S
Now that gettimeofday.S is unique, move cvdso_call macro
into that file which is the only user.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/72720359d4c58e3a3b96dd74952741225faac3de.1642782130.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/vdso/gettimeofday.S | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vdso/gettimeofday.S b/arch/powerpc/kernel/vdso/gettimeofday.S index 397f290015bc..eb9c81e1c218 100644 --- a/arch/powerpc/kernel/vdso/gettimeofday.S +++ b/arch/powerpc/kernel/vdso/gettimeofday.S @@ -12,7 +12,49 @@ #include <asm/vdso_datapage.h> #include <asm/asm-offsets.h> #include <asm/unistd.h> -#include <asm/vdso/gettimeofday.h> + +/* + * The macro sets two stack frames, one for the caller and one for the callee + * because there are no requirement for the caller to set a stack frame when + * calling VDSO so it may have omitted to set one, especially on PPC64 + */ + +.macro cvdso_call funct call_time=0 + .cfi_startproc + PPC_STLU r1, -PPC_MIN_STKFRM(r1) + mflr r0 + .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 + .ifeq \call_time + addi r5, r5, VDSO_DATA_OFFSET + .else + addi r4, r5, VDSO_DATA_OFFSET + .endif + 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 + .ifeq \call_time + cmpwi r3, 0 + .endif + mtlr r0 + .cfi_restore lr + addi r1, r1, 2 * PPC_MIN_STKFRM + crclr so + .ifeq \call_time + beqlr+ + crset so + neg r3, r3 + .endif + blr + .cfi_endproc +.endm .text /* |