arm: Remove signal translation and exec_domain

As execution domain support is gone we can remove
signal translation from the signal code and remove
exec_domain from thread_info.

Signed-off-by: Richard Weinberger <richard@nod.at>

4 files changed, 3 insertions, 20 deletions

diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 72812a1f3d1c..bd32eded3e50 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -23,7 +23,6 @@
 #ifndef __ASSEMBLY__
 
 struct task_struct;
-struct exec_domain;
 
 #include <asm/types.h>
 #include <asm/domain.h>
@@ -53,7 +52,6 @@ struct thread_info {
         int                     preempt_count;  /* 0 => preemptable, <0 => bug */
         mm_segment_t            addr_limit;     /* address limit */
         struct task_struct      *task;          /* main task structure */
-        struct exec_domain      *exec_domain;   /* execution domain */
         __u32                   cpu;            /* cpu */
         __u32                   cpu_domain;     /* cpu domain */
         struct cpu_context_save cpu_context;    /* cpu context */
@@ -73,7 +71,6 @@ struct thread_info {
 #define INIT_THREAD_INFO(tsk)                                           \
 {                                                                       \
         .task           = &tsk,                                         \
-        .exec_domain    = &default_exec_domain,                         \
         .flags          = 0,                                            \
         .preempt_count  = INIT_PREEMPT_COUNT,                           \
         .addr_limit     = KERNEL_DS,                                    \
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
index 2d2d6087b9b1..70d277ce235f 100644
--- a/arch/arm/kernel/asm-offsets.c
+++ b/arch/arm/kernel/asm-offsets.c
@@ -66,7 +66,6 @@ int main(void)
   DEFINE(TI_PREEMPT,            offsetof(struct thread_info, preempt_count));
   DEFINE(TI_ADDR_LIMIT,         offsetof(struct thread_info, addr_limit));
   DEFINE(TI_TASK,               offsetof(struct thread_info, task));
-  DEFINE(TI_EXEC_DOMAIN,        offsetof(struct thread_info, exec_domain));
   DEFINE(TI_CPU,                offsetof(struct thread_info, cpu));
   DEFINE(TI_CPU_DOMAIN,         offsetof(struct thread_info, cpu_domain));
   DEFINE(TI_CPU_SAVE,           offsetof(struct thread_info, cpu_context));
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 023ac905e4c3..423663e23791 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -318,17 +318,6 @@ get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize)
         return frame;
 }
 
-/*
- * translate the signal
- */
-static inline int map_sig(int sig)
-{
-        struct thread_info *thread = current_thread_info();
-        if (sig < 32 && thread->exec_domain && thread->exec_domain->signal_invmap)
-                sig = thread->exec_domain->signal_invmap[sig];
-        return sig;
-}
-
 static int
 setup_return(struct pt_regs *regs, struct ksignal *ksig,
              unsigned long __user *rc, void __user *frame)
@@ -412,7 +401,7 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
                 }
         }
 
-        regs->ARM_r0 = map_sig(ksig->sig);
+        regs->ARM_r0 = ksig->sig;
         regs->ARM_sp = (unsigned long)frame;
         regs->ARM_lr = retcode;
         regs->ARM_pc = handler;
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 788e23fe64d8..3dce1a342030 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -505,12 +505,10 @@ asmlinkage void bad_mode(struct pt_regs *regs, int reason)
 
 static int bad_syscall(int n, struct pt_regs *regs)
 {
-        struct thread_info *thread = current_thread_info();
         siginfo_t info;
 
-        if ((current->personality & PER_MASK) != PER_LINUX &&
-            thread->exec_domain->handler) {
-                thread->exec_domain->handler(n, regs);
+        if ((current->personality & PER_MASK) != PER_LINUX) {
+                send_sig(SIGSEGV, current, 1);
                 return regs->ARM_r0;
         }