diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2007-12-10 15:50:28 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:18:59 +0900 |
| commit | cd01204b82933754a7276838656420477f64d4b8 (patch) | |
| tree | f9e3b11574bec04cda78c549cdc5c37c3c75c4a5 /include/asm-sh/elf.h | |
| parent | c8c0a1aba9fa8f816dc8fb477ff816a5b700f0ea (diff) | |
sh: Encode L1/L2 cache shape in auxvt.
This adds in the L1I/L1D/L2 cache shape support to their respective
entries in the ELF auxvt, based on the Alpha implementation. We use
this on the userspace libc side for calculating a tightly packed
SHMLBA amongst other things.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/elf.h')
| -rw-r--r-- | include/asm-sh/elf.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/include/asm-sh/elf.h b/include/asm-sh/elf.h index 5a1e920f059..61960408e6e 100644 --- a/include/asm-sh/elf.h +++ b/include/asm-sh/elf.h @@ -161,12 +161,25 @@ extern void __kernel_vsyscall; #define VDSO_BASE ((unsigned long)current->mm->context.vdso) #define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x)) +#define VSYSCALL_AUX_ENT \ + if (vdso_enabled) \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); +#else +#define VSYSCALL_AUX_ENT +#endif /* CONFIG_VSYSCALL */ + +extern int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; + /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ #define ARCH_DLINFO \ do { \ - if (vdso_enabled) \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \ + /* Optional vsyscall entry */ \ + VSYSCALL_AUX_ENT \ + \ + /* Cache desc */ \ + NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ + NEW_AUX_ENT(AT_L1D_CACHESHAPE, l1d_cache_shape); \ + NEW_AUX_ENT(AT_L2_CACHESHAPE, l2_cache_shape); \ } while (0) -#endif /* CONFIG_VSYSCALL */ #endif /* __ASM_SH_ELF_H */ |