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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-01-14 14:14:00 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-18 10:43:52 -0800 |
| commit | 9cd8312ce36ab86cb0cc94fea69b3762afc1b052 (patch) | |
| tree | 987623921777252b993a2260a5ca0f66f69ff246 | |
| parent | f54d9156ee17f92cdcd1609ee1aae456cddb7b44 (diff) | |
powerpc: Enable syscall wrappers for 64-bit
commit ee6a093222549ac0c72cfd296c69fa5e7d6daa34 upstream.
This enables the use of syscall wrappers to do proper sign extension
for 64-bit programs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/powerpc/Kconfig | 1 | ||||
| -rw-r--r-- | include/linux/syscalls.h | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 525c13a4de93..de93c07c15b4 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -121,6 +121,7 @@ config PPC select HAVE_DMA_ATTRS if PPC64 select USE_GENERIC_SMP_HELPERS if SMP select HAVE_OPROFILE + select HAVE_SYSCALL_WRAPPERS if PPC64 config EARLY_PRINTK bool diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 0bb537d7ba2e..90aa5eba87a2 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -103,8 +103,14 @@ struct old_linux_dirent; #define SYSCALL_DEFINE5(...) SYSCALL_DEFINEx(5, __VA_ARGS__) #define SYSCALL_DEFINE6(...) SYSCALL_DEFINEx(6, __VA_ARGS__) +#ifdef CONFIG_PPC64 +#define SYSCALL_ALIAS(alias, name) \ + asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \ + "\t.globl ." #alias "\n\t.set ." #alias ", ." #name) +#else #define SYSCALL_ALIAS(alias, name) \ asm ("\t.globl " #alias "\n\t.set " #alias ", " #name) +#endif #ifdef CONFIG_HAVE_SYSCALL_WRAPPERS |