ptrace: Add support for generic PTRACE_GETREGSET/PTRACE_SETREGSET

[firefly-linux-kernel-4.4.55.git] / include / linux / ptrace.h

diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 56f2d63a5cbb6b6794959fe1553aa779e79912dd..dbfa821d5a6eca74a897cb0d570eddb8ffb0079f 100644 (file)
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -27,6 +27,21 @@
 #define PTRACE_GETSIGINFO      0x4202
 #define PTRACE_SETSIGINFO      0x4203
 
+/*
+ * Generic ptrace interface that exports the architecture specific regsets
+ * using the corresponding NT_* types (which are also used in the core dump).
+ *
+ * This interface usage is as follows:
+ *     struct iovec iov = { buf, len};
+ *
+ *     ret = ptrace(PTRACE_GETREGSET/PTRACE_SETREGSET, pid, NT_XXX_TYPE, &iov);
+ *
+ * On the successful completion, iov.len will be updated by the kernel,
+ * specifying how much the kernel has written/read to/from the user's iov.buf.
+ */
+#define PTRACE_GETREGSET       0x4204
+#define PTRACE_SETREGSET       0x4205
+
 /* options set using PTRACE_SETOPTIONS */
 #define PTRACE_O_TRACESYSGOOD  0x00000001
 #define PTRACE_O_TRACEFORK     0x00000002