[PATCH] uml: system call path cleanup

This merges two sets of files which had no business being split apart in the
first place.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 26 insertions, 21 deletions

diff --git a/arch/um/kernel/tt/syscall_kern.c b/arch/um/kernel/tt/syscall_kern.c
index 2650a628719e..3d29c90514cc 100644
--- a/arch/um/kernel/tt/syscall_kern.c
+++ b/arch/um/kernel/tt/syscall_kern.c
@@ -12,36 +12,41 @@
 #include "asm/uaccess.h"
 #include "asm/stat.h"
 #include "sysdep/syscalls.h"
+#include "sysdep/sigcontext.h"
 #include "kern_util.h"
+#include "syscall.h"
 
-extern syscall_handler_t *sys_call_table[];
-
-long execute_syscall_tt(void *r)
+void syscall_handler_tt(int sig, struct pt_regs *regs)
 {
-        struct pt_regs *regs = r;
-        long res;
+        void *sc;
+        long result;
         int syscall;
-
 #ifdef CONFIG_SYSCALL_DEBUG
+        int index;
+        index = record_syscall_start(syscall);
+#endif
+        sc = UPT_SC(&regs->regs);
+        SC_START_SYSCALL(sc);
+
+        syscall_trace(&regs->regs, 0);
+
         current->thread.nsyscalls++;
         nsyscalls++;
-#endif
         syscall = UPT_SYSCALL_NR(&regs->regs);
 
         if((syscall >= NR_syscalls) || (syscall < 0))
-                res = -ENOSYS;
-        else res = EXECUTE_SYSCALL(syscall, regs);
+                result = -ENOSYS;
+        else result = EXECUTE_SYSCALL(syscall, regs);
 
-        return(res);
-}
+        /* regs->sc may have changed while the system call ran (there may
+         * have been an interrupt or segfault), so it needs to be refreshed.
+         */
+        UPT_SC(&regs->regs) = sc;
 
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+        SC_SET_SYSCALL_RETURN(sc, result);
+
+        syscall_trace(&regs->regs, 1);
+#ifdef CONFIG_SYSCALL_DEBUG
+        record_syscall_end(index, result);
+#endif
+}