Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / blackfin / include / asm / ptrace.h

diff --git a/kernel/arch/blackfin/include/asm/ptrace.h b/kernel/arch/blackfin/include/asm/ptrace.h
new file mode 100644 (file)
index 0000000..c004915
--- /dev/null
+++ b/kernel/arch/blackfin/include/asm/ptrace.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2004-2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+#ifndef _BFIN_PTRACE_H
+#define _BFIN_PTRACE_H
+
+#include <uapi/asm/ptrace.h>
+
+#ifndef __ASSEMBLY__
+
+/* user_mode returns true if only one bit is set in IPEND, other than the
+   master interrupt enable.  */
+#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
+
+#define arch_has_single_step() (1)
+/* common code demands this function */
+#define ptrace_disable(child) user_disable_single_step(child)
+#define current_user_stack_pointer() rdusp()
+
+extern int is_user_addr_valid(struct task_struct *child,
+                             unsigned long start, unsigned long len);
+
+/*
+ * Get the address of the live pt_regs for the specified task.
+ * These are saved onto the top kernel stack when the process
+ * is not running.
+ *
+ * Note: if a user thread is execve'd from kernel space, the
+ * kernel stack will not be empty on entry to the kernel, so
+ * ptracing these tasks will fail.
+ */
+#define task_pt_regs(task) \
+       (struct pt_regs *) \
+           ((unsigned long)task_stack_page(task) + \
+            (THREAD_SIZE - sizeof(struct pt_regs)))
+
+#include <asm-generic/ptrace.h>
+
+#endif                         /* __ASSEMBLY__ */
+#endif                         /* _BFIN_PTRACE_H */