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authorAl Viro <viro@zeniv.linux.org.uk>2012-05-02 21:13:45 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-21 14:39:44 -0400
commitfa18484d0947b976a769d15c83c50617493c81c1 (patch)
tree09845575b951b585d236101e67073b3e9ed4fb16 /arch/arm/kernel
parent6b5c8045ecc7e726cdaa2a9d9c8e5008050e1252 (diff)
downloadop-kernel-dev-fa18484d0947b976a769d15c83c50617493c81c1.zip
op-kernel-dev-fa18484d0947b976a769d15c83c50617493c81c1.tar.gz
arm: remove unused restart trampoline
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/signal.c13
-rw-r--r--arch/arm/kernel/signal.h2
-rw-r--r--arch/arm/kernel/traps.c2
3 files changed, 0 insertions, 17 deletions
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 75c70d1..869c498 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -29,7 +29,6 @@
*/
#define SWI_SYS_SIGRETURN (0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE))
#define SWI_SYS_RT_SIGRETURN (0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE))
-#define SWI_SYS_RESTART (0xef000000|__NR_restart_syscall|__NR_OABI_SYSCALL_BASE)
/*
* With EABI, the syscall number has to be loaded into r7.
@@ -50,18 +49,6 @@ const unsigned long sigreturn_codes[7] = {
};
/*
- * Either we support OABI only, or we have EABI with the OABI
- * compat layer enabled. In the later case we don't know if
- * user space is EABI or not, and if not we must not clobber r7.
- * Always using the OABI syscall solves that issue and works for
- * all those cases.
- */
-const unsigned long syscall_restart_code[2] = {
- SWI_SYS_RESTART, /* swi __NR_restart_syscall */
- 0xe49df004, /* ldr pc, [sp], #4 */
-};
-
-/*
* atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 6fcfe83..5ff067b7 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -8,7 +8,5 @@
* published by the Free Software Foundation.
*/
#define KERN_SIGRETURN_CODE (CONFIG_VECTORS_BASE + 0x00000500)
-#define KERN_RESTART_CODE (KERN_SIGRETURN_CODE + sizeof(sigreturn_codes))
extern const unsigned long sigreturn_codes[7];
-extern const unsigned long syscall_restart_code[2];
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 7784547..5aef330 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -819,8 +819,6 @@ void __init early_trap_init(void *vectors_base)
*/
memcpy((void *)(vectors + KERN_SIGRETURN_CODE - CONFIG_VECTORS_BASE),
sigreturn_codes, sizeof(sigreturn_codes));
- memcpy((void *)(vectors + KERN_RESTART_CODE - CONFIG_VECTORS_BASE),
- syscall_restart_code, sizeof(syscall_restart_code));
flush_icache_range(vectors, vectors + PAGE_SIZE);
modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
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