From ee6a093222549ac0c72cfd296c69fa5e7d6daa34 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 14 Jan 2009 14:14:00 +0100 Subject: [CVE-2009-0029] powerpc: Enable syscall wrappers for 64-bit This enables the use of syscall wrappers to do proper sign extension for 64-bit programs. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Heiko Carstens --- include/linux/syscalls.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') 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 -- cgit v1.2.2