1 files changed, 51 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ptrace-ppc64.h b/arch/powerpc/kernel/ptrace-ppc64.h
new file mode 100644
index 000000000000..e450ce01392b
--- /dev/null
+++ b/arch/powerpc/kernel/ptrace-ppc64.h
@@ -0,0 +1,51 @@
+/*
+ *    Copyright (c) 2002 Stephen Rothwell, IBM Coproration
+ *    Extracted from ptrace.c and ptrace32.c
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file README.legal in the main directory of
+ * this archive for more details.
+ */
+
+#ifndef _POWERPC_PTRACE_PPC64_H
+#define _POWERPC_PTRACE_PPC64_H
+
+/*
+ * Set of msr bits that gdb can change on behalf of a process.
+ */
+#define MSR_DEBUGCHANGE	(MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1)
+
+/*
+ * Max register writeable via put_reg
+ */
+#define PT_MAX_PUT_REG	PT_CCR
+
+/*
+ * Munging of MSR on return from get_regs
+ *
+ * Put the correct FP bits in, they might be wrong as a result
+ * of our lazy FP restore.
+ */
+
+#define PT_MUNGE_MSR(msr, task)	({ (msr) | (task)->thread.fpexc_mode; })
+
+static inline int ptrace_set_debugreg(struct task_struct *task,
+				      unsigned long addr, unsigned long data)
+{
+	/* We only support one DABR and no IABRS at the moment */
+	if (addr > 0)
+		return -EINVAL;
+
+	/* The bottom 3 bits are flags */
+	if ((data & ~0x7UL) >= TASK_SIZE)
+		return -EIO;
+
+	/* Ensure translation is on */
+	if (data && !(data & DABR_TRANSLATION))
+		return -EIO;
+
+	task->thread.dabr = data;
+	return 0;
+}
+
+#endif /* _POWERPC_PTRACE_PPC64_H */