diff options
| author | Khem Raj <raj.khem@gmail.com> | 2010-02-17 23:42:28 -0800 |
|---|---|---|
| committer | Khem Raj <raj.khem@gmail.com> | 2010-02-17 23:42:28 -0800 |
| commit | ed0915ba70d0ff6ed0a78f45d46822763a580737 (patch) | |
| tree | c0495c812a983ac354a3c304335d89a4c653b1bc /libc/sysdeps/linux/sh | |
| parent | f14c584876271f474025fc06b3dc66ce798bcacb (diff) | |
Get new nptl building on SH4
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/sh')
| -rw-r--r-- | libc/sysdeps/linux/sh/sysdep.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/sh/sysdep.h b/libc/sysdeps/linux/sh/sysdep.h index 1d490553d..bd6234292 100644 --- a/libc/sysdeps/linux/sh/sysdep.h +++ b/libc/sysdeps/linux/sh/sysdep.h @@ -273,5 +273,24 @@ .align 2; \ 1: .long SYS_ify (syscall_name); \ 2: - #endif /* __ASSEMBLER__ */ + +/* Pointer mangling support. */ +#if defined NOT_IN_libc && defined IS_IN_rtld +/* We cannot use the thread descriptor because in ld.so we use setjmp + earlier than the descriptor is initialized. Using a global variable + is too complicated here since we have no PC-relative addressing mode. */ +#else +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(reg, tmp) \ + stc gbr,tmp; mov.l @(POINTER_GUARD,tmp),tmp; xor tmp,reg +# define PTR_MANGLE2(reg, tmp) xor tmp,reg +# define PTR_DEMANGLE(reg, tmp) PTR_MANGLE (reg, tmp) +# define PTR_DEMANGLE2(reg, tmp) PTR_MANGLE2 (reg, tmp) +# else +# define PTR_MANGLE(var) \ + (var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ()) +# define PTR_DEMANGLE(var) PTR_MANGLE (var) +# endif +#endif + |