diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-01-08 17:31:42 -0600 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-02-06 19:46:04 +1100 |
| commit | 2a196e24b39aa85351ecd9eb7cf511914157f14b (patch) | |
| tree | f853eac349a1b551863532a86e4eb0e763dff08b /arch/powerpc/include/asm/elf.h | |
| parent | 65c059bcaa73197ca71e8d4cc9a6c903560506c1 (diff) | |
powerpc: Move ARCH_DLINFO out of uapi
It's an kernel private macro, it doesn't belong there
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/elf.h')
| -rw-r--r-- | arch/powerpc/include/asm/elf.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h index ee46ffef608e..730c27ed10e1 100644 --- a/arch/powerpc/include/asm/elf.h +++ b/arch/powerpc/include/asm/elf.h @@ -136,4 +136,26 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, #endif /* CONFIG_SPU_BASE */ +/* + * The requirements here are: + * - keep the final alignment of sp (sp & 0xf) + * - make sure the 32-bit value at the first 16 byte aligned position of + * AUXV is greater than 16 for glibc compatibility. + * AT_IGNOREPPC is used for that. + * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC, + * even if DLINFO_ARCH_ITEMS goes to zero or is undefined. + * update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes + */ +#define ARCH_DLINFO \ +do { \ + /* Handle glibc compatibility. */ \ + NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \ + NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \ + /* Cache size items */ \ + NEW_AUX_ENT(AT_DCACHEBSIZE, dcache_bsize); \ + NEW_AUX_ENT(AT_ICACHEBSIZE, icache_bsize); \ + NEW_AUX_ENT(AT_UCACHEBSIZE, ucache_bsize); \ + VDSO_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso_base); \ +} while (0) + #endif /* _ASM_POWERPC_ELF_H */ |