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Diffstat (limited to 'arch/um/kernel/tt/syscall_kern.c')
-rw-r--r--arch/um/kernel/tt/syscall_kern.c47
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
+}
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