[PATCH 2/5] Include asm/ptrace.h in mips-linux-nat.c

[Yao Qi <yao@codesourcery.com>]

Hi,
This patch is to include asm/ptrace.h in mips-linux-nat.c and wrap
some structures by "ifndef PTRACE_GET_WATCH_REGS" and "#endif" as a
fallback if watchpoint-related structures are not defined in kernel
header.

gdb:

2013-06-29  Yao Qi  <yao@codesourcery.com>

	* mips-linux-nat.c (MAX_DEBUG_REGISTER): Move it earlier in
	the code.
	(enum pt_watch_style): Remove.
	(struct mips32_watch_regs, struct mips64_watch_regs): Remove.
	(struct pt_watch_regs): Likewise.
	[!PTRACE_GET_WATCH_REGS] (enum pt_watch_style): New.
	[!PTRACE_GET_WATCH_REGS] (struct mips32_watch_regs): New.
	[!PTRACE_GET_WATCH_REGS] (struct mips64_watch_regs): New.
	[!PTRACE_GET_WATCH_REGS] (struct pt_watch_regs): New.
---
 gdb/mips-linux-nat.c |   39 ++++++++++++++++++++++-----------------
 1 files changed, 22 insertions(+), 17 deletions(-)

diff --git a/gdb/mips-linux-nat.c b/gdb/mips-linux-nat.c
index d323a82..44d23a6 100644
--- a/gdb/mips-linux-nat.c
+++ b/gdb/mips-linux-nat.c
@@ -34,6 +34,7 @@
 
 #include <sgidefs.h>
 #include <sys/ptrace.h>
+#include <asm/ptrace.h>
 
 #include "features/mips-linux.c"
 #include "features/mips-dsp-linux.c"
@@ -460,31 +461,19 @@ mips_linux_read_description (struct target_ops *ops)
     return have_dsp ? tdesc_mips64_dsp_linux : tdesc_mips64_linux;
 }
 
-#ifndef PTRACE_GET_WATCH_REGS
-#  define PTRACE_GET_WATCH_REGS	0xd0
-#endif
-
-#ifndef PTRACE_SET_WATCH_REGS
-#  define PTRACE_SET_WATCH_REGS	0xd1
-#endif
-
-#define W_BIT 0
-#define R_BIT 1
-#define I_BIT 2
+#define MAX_DEBUG_REGISTER 8
 
-#define W_MASK (1 << W_BIT)
-#define R_MASK (1 << R_BIT)
-#define I_MASK (1 << I_BIT)
+/* If macro PTRACE_GET_WATCH_REGS is not defined, kernel header doesn't
+   have hardware watchpoint-related structures.  Define them below.  */
 
-#define IRW_MASK (I_MASK | R_MASK | W_MASK)
+#ifndef PTRACE_GET_WATCH_REGS
+#  define PTRACE_GET_WATCH_REGS	0xd0
 
 enum pt_watch_style {
   pt_watch_style_mips32,
   pt_watch_style_mips64
 };
 
-#define MAX_DEBUG_REGISTER 8
-
 /* A value of zero in a watchlo indicates that it is available.  */
 
 struct mips32_watch_regs
@@ -524,6 +513,22 @@ struct pt_watch_regs
   };
 };
 
+#endif
+
+#ifndef PTRACE_SET_WATCH_REGS
+#  define PTRACE_SET_WATCH_REGS	0xd1
+#endif
+
+#define W_BIT 0
+#define R_BIT 1
+#define I_BIT 2
+
+#define W_MASK (1 << W_BIT)
+#define R_MASK (1 << R_BIT)
+#define I_MASK (1 << I_BIT)
+
+#define IRW_MASK (I_MASK | R_MASK | W_MASK)
+
 /* -1 if the kernel and/or CPU do not support watch registers.
     1 if watch_readback is valid and we can read style, num_valid
       and the masks.
-- 
1.7.7.6