btrace: add struct btrace_data

Add a structure to hold the branch trace data and an enum to describe
the format of that data.  So far, only BTS is supported.  Also added
a NONE format to indicate that no branch trace data is available.

This will make it easier to support different branch trace formats in
the future.

2015-02-09  Markus Metzger  <markus.t.metzger@intel.com>

	* Makefile.in (SFILES): Add common/btrace-common.c.
	(COMMON_OBS): Add common/btrace-common.o.
	(btrace-common.o): Add build rules.
	* btrace.c (parse_xml_btrace): Update parameters.
	(parse_xml_btrace_block): Set format field.
	(btrace_add_pc, btrace_fetch): Use struct btrace_data.
	(do_btrace_data_cleanup, make_cleanup_btrace_data): New.
	(btrace_compute_ftrace): Split into this and...
	(btrace_compute_ftrace_bts): ...this.
	(btrace_stitch_trace): Split into this and...
	(btrace_stitch_bts): ...this.
	* btrace.h (parse_xml_btrace): Update parameters.
	(make_cleanup_btrace_data): New.
	* common/btrace-common.c: New.
	* common/btrace-common.h: Include common-defs.h.
	(btrace_block_s): Update comment.
	(btrace_format): New.
	(btrace_format_string): New.
	(btrace_data_bts): New.
	(btrace_data): New.
	(btrace_data_init, btrace_data_fini, btrace_data_empty): New.
	* remote.c (remote_read_btrace): Update parameters.
	* target.c (target_read_btrace): Update parameters.
	* target.h (target_read_btrace): Update parameters.
	(target_ops)<to_read_btrace>: Update parameters.
	* x86-linux-nat.c (x86_linux_read_btrace): Update parameters.
	* target-delegates.c: Regenerate.
	* target-debug (target_debug_print_struct_btrace_data_p): New.
	* nat/linux-btrace.c (linux_read_btrace): Split into this and...
	(linux_read_bts): ...this.
	* nat/linux-btrace.h (linux_read_btrace): Update parameters.

gdbserver/
	* Makefile.in (SFILES): Add common/btrace-common.c.
	(OBS): Add common/btrace-common.o.
	(btrace-common.o): Add build rules.
	* linux-low: Include btrace-common.h.
	(linux_low_read_btrace): Use struct btrace_data.  Call
	btrace_data_init and btrace_data_fini.

1 files changed, 4 insertions, 4 deletions

diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 9beb5ff..00956ba 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -3191,20 +3191,20 @@ debug_teardown_btrace (struct target_ops *self, struct btrace_target_info *arg1)
 }
 
 static enum btrace_error
-delegate_read_btrace (struct target_ops *self, VEC (btrace_block_s) **arg1, struct btrace_target_info *arg2, enum btrace_read_type arg3)
+delegate_read_btrace (struct target_ops *self, struct btrace_data *arg1, struct btrace_target_info *arg2, enum btrace_read_type arg3)
 {
   self = self->beneath;
   return self->to_read_btrace (self, arg1, arg2, arg3);
 }
 
 static enum btrace_error
-tdefault_read_btrace (struct target_ops *self, VEC (btrace_block_s) **arg1, struct btrace_target_info *arg2, enum btrace_read_type arg3)
+tdefault_read_btrace (struct target_ops *self, struct btrace_data *arg1, struct btrace_target_info *arg2, enum btrace_read_type arg3)
 {
   tcomplain ();
 }
 
 static enum btrace_error
-debug_read_btrace (struct target_ops *self, VEC (btrace_block_s) **arg1, struct btrace_target_info *arg2, enum btrace_read_type arg3)
+debug_read_btrace (struct target_ops *self, struct btrace_data *arg1, struct btrace_target_info *arg2, enum btrace_read_type arg3)
 {
   enum btrace_error result;
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_read_btrace (...)\n", debug_target.to_shortname);
@@ -3212,7 +3212,7 @@ debug_read_btrace (struct target_ops *self, VEC (btrace_block_s) **arg1, struct
   fprintf_unfiltered (gdb_stdlog, "<- %s->to_read_btrace (", debug_target.to_shortname);
   target_debug_print_struct_target_ops_p (&debug_target);
   fputs_unfiltered (", ", gdb_stdlog);
-  target_debug_print_VEC__btrace_block_s__pp (arg1);
+  target_debug_print_struct_btrace_data_p (arg1);
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_struct_btrace_target_info_p (arg2);
   fputs_unfiltered (", ", gdb_stdlog);