[PATCH 4/7] gdbserver: btrace enums

[Pedro Alves <palves@redhat.com>]

Fixes:

 ../../../src/gdb/gdbserver/linux-low.c: In function ‘int linux_low_read_btrace(btrace_target_info*, buffer*, int)’:
 ../../../src/gdb/gdbserver/linux-low.c:6827:48: error: invalid conversion from ‘int’ to ‘btrace_read_type’ [-fpermissive]
    err = linux_read_btrace (&btrace, tinfo, type);
						 ^
 In file included from ../../../src/gdb/gdbserver/linux-low.c:98:0:
 ../../../src/gdb/gdbserver/../nat/linux-btrace.h:116:26: error:   initializing argument 3 of ‘btrace_error linux_read_btrace(btrace_data*, btrace_target_info*, btrace_read_type)’ [-fpermissive]
  extern enum btrace_error linux_read_btrace (struct btrace_data *btrace,
			   ^

I didn't spot the cyclic dependency the comment talks about.

gdb/ChangeLog:
2015-10-28  Pedro Alves  <palves@redhat.com>

	* linux-low.c (linux_low_read_btrace): Change type of 'type'
	parameter.
	* server.c (handle_qxfer_btrace): Change type of 'type'
	local.
	* target.h (struct target_ops) <read_btrace>: Change type of
	'type' parameter.  Update comment.
---
 gdb/gdbserver/linux-low.c | 2 +-
 gdb/gdbserver/server.c    | 3 ++-
 gdb/gdbserver/target.h    | 6 +++---
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index e778c4c..41ab510 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -6815,7 +6815,7 @@ linux_low_encode_raw (struct buffer *buffer, const gdb_byte *data,
 
 static int
 linux_low_read_btrace (struct btrace_target_info *tinfo, struct buffer *buffer,
-		       int type)
+		       enum btrace_read_type type)
 {
   struct btrace_data btrace;
   struct btrace_block *block;
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index ad6626e..024399d 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -1608,7 +1608,8 @@ handle_qxfer_btrace (const char *annex,
 {
   static struct buffer cache;
   struct thread_info *thread;
-  int type, result;
+  enum btrace_read_type type;
+  int result;
 
   if (the_target->read_btrace == NULL || writebuf != NULL)
     return -2;
diff --git a/gdb/gdbserver/target.h b/gdb/gdbserver/target.h
index a14c6ff..769c876 100644
--- a/gdb/gdbserver/target.h
+++ b/gdb/gdbserver/target.h
@@ -399,11 +399,11 @@ struct target_ops
      Returns zero on success, non-zero otherwise.  */
   int (*disable_btrace) (struct btrace_target_info *tinfo);
 
-  /* Read branch trace data into buffer.  We use an int to specify the type
-     to break a cyclic dependency.
+  /* Read branch trace data into buffer.
      Return 0 on success; print an error message into BUFFER and return -1,
      otherwise.  */
-  int (*read_btrace) (struct btrace_target_info *, struct buffer *, int type);
+  int (*read_btrace) (struct btrace_target_info *, struct buffer *,
+		      enum btrace_read_type type);
 
   /* Read the branch trace configuration into BUFFER.
      Return 0 on success; print an error message into BUFFER and return -1
-- 
1.9.3