1 files changed, 51 insertions, 0 deletions
diff --git a/arch/um/sys-x86_64/ptrace_user.c b/arch/um/sys-x86_64/ptrace_user.c
new file mode 100644
index 000000000000..12e404c6fa46
--- /dev/null
+++ b/arch/um/sys-x86_64/ptrace_user.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#include <stddef.h>
+#include <errno.h>
+#include "ptrace_user.h"
+#include "user.h"
+#include "kern_constants.h"
+
+int ptrace_getregs(long pid, unsigned long *regs_out)
+{
+	if(ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
+		return(-errno);
+	return(0);
+}
+
+int ptrace_setregs(long pid, unsigned long *regs)
+{
+	if(ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
+		return(-errno);
+	return(0);
+}
+
+void ptrace_pokeuser(unsigned long addr, unsigned long data)
+{
+	panic("ptrace_pokeuser");
+}
+
+#define DS 184
+#define ES 192
+#define __USER_DS     0x2b
+
+void arch_enter_kernel(void *task, int pid)
+{
+}
+
+void arch_leave_kernel(void *task, int pid)
+{
+#ifdef UM_USER_CS
+        if(ptrace(PTRACE_POKEUSR, pid, CS, UM_USER_CS) < 0)
+                printk("POKEUSR CS failed");
+#endif
+
+        if(ptrace(PTRACE_POKEUSR, pid, DS, __USER_DS) < 0)
+                printk("POKEUSR DS failed");
+        if(ptrace(PTRACE_POKEUSR, pid, ES, __USER_DS) < 0)
+                printk("POKEUSR ES failed");
+}