diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2007-12-10 16:21:57 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:19:00 +0900 |
| commit | 98c4ecde9da14fafbcf1b6c025b08342a327e644 (patch) | |
| tree | 62777e19b70830cd5ecaa7b92ac643033cb161bd /include/asm-sh | |
| parent | a9f1365e5e4963705f85a6381cbed74c5615dbac (diff) | |
| download | lwn-98c4ecde9da14fafbcf1b6c025b08342a327e644.tar.gz lwn-98c4ecde9da14fafbcf1b6c025b08342a327e644.zip | |
sh: Provide the FPSCR init through AT_FPUCW.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/auxvec.h | 6 | ||||
| -rw-r--r-- | include/asm-sh/elf.h | 11 | ||||
| -rw-r--r-- | include/asm-sh/system.h | 2 |
3 files changed, 17 insertions, 2 deletions
diff --git a/include/asm-sh/auxvec.h b/include/asm-sh/auxvec.h index 4069858f8131..a6b9d4f4859e 100644 --- a/include/asm-sh/auxvec.h +++ b/include/asm-sh/auxvec.h @@ -6,6 +6,12 @@ * for more of them. */ +/* + * This entry gives some information about the FPU initialization + * performed by the kernel. + */ +#define AT_FPUCW 18 /* Used FPU control word. */ + #ifdef CONFIG_VSYSCALL /* * Only define this in the vsyscall case, the entry point to diff --git a/include/asm-sh/elf.h b/include/asm-sh/elf.h index 9a95f8cb2e13..e00a58cb476c 100644 --- a/include/asm-sh/elf.h +++ b/include/asm-sh/elf.h @@ -169,13 +169,22 @@ extern void __kernel_vsyscall; #define VSYSCALL_AUX_ENT #endif /* CONFIG_VSYSCALL */ +#ifdef CONFIG_SH_FPU +#define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPSCR_INIT) +#else +#define FPU_AUX_ENT +#endif + 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 { \ + /* Optional FPU initialization */ \ + FPU_AUX_ENT; \ + \ /* Optional vsyscall entry */ \ - VSYSCALL_AUX_ENT \ + VSYSCALL_AUX_ENT; \ \ /* Cache desc */ \ NEW_AUX_ENT(AT_L1I_CACHESHAPE, l1i_cache_shape); \ diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h index 84592555ba2a..772cd1a0a674 100644 --- a/include/asm-sh/system.h +++ b/include/asm-sh/system.h @@ -12,7 +12,7 @@ #include <asm/types.h> #include <asm/ptrace.h> -#define AT_VECTOR_SIZE_ARCH 4 /* entries in ARCH_DLINFO */ +#define AT_VECTOR_SIZE_ARCH 5 /* entries in ARCH_DLINFO */ #if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5) #define __icbi() \ |