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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-09-27 09:16:33 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-04 01:01:17 +1100 |
| commit | 91bf695596f594e42d69d70deb2ae53cafecf77c (patch) | |
| tree | f227a7426c8e357087db461585f0d48b2969f6fb /arch/powerpc/include/asm | |
| parent | 550e6074c106e1a6fb57dfef62f0daede12d832c (diff) | |
| download | linux-91bf695596f594e42d69d70deb2ae53cafecf77c.tar.gz linux-91bf695596f594e42d69d70deb2ae53cafecf77c.tar.bz2 linux-91bf695596f594e42d69d70deb2ae53cafecf77c.zip | |
powerpc/vdso: Retrieve sigtramp offsets at buildtime
This is copied from arm64.
Instead of using runtime generated signal trampoline offsets,
get offsets at buildtime.
If the said trampoline doesn't exist, build will fail. So no
need to check whether the trampoline exists or not in the VDSO.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f8bfd6812c3e3678b1cdb4d55a52f9eb022b40d3.1601197618.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/vdso.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/vdso.h b/arch/powerpc/include/asm/vdso.h index 2ff884853f97..f5257b7f17d0 100644 --- a/arch/powerpc/include/asm/vdso.h +++ b/arch/powerpc/include/asm/vdso.h @@ -15,6 +15,18 @@ #ifndef __ASSEMBLY__ +#ifdef CONFIG_PPC64 +#include <generated/vdso64-offsets.h> +#endif + +#ifdef CONFIG_VDSO32 +#include <generated/vdso32-offsets.h> +#endif + +#define VDSO64_SYMBOL(base, name) ((unsigned long)(base) + (vdso64_offset_##name)) + +#define VDSO32_SYMBOL(base, name) ((unsigned long)(base) + (vdso32_offset_##name)) + /* Offsets relative to thread->vdso_base */ extern unsigned long vdso64_rt_sigtramp; extern unsigned long vdso32_sigtramp; |