Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

Add the gdb remote target operations for branch tracing.

Browse Source 
We define the following packets:

  Qbtrace:bts         enable branch tracing for the current thread
                      returns "OK" or "Enn"

  Qbtrace:off         disable branch tracing for the current thread
                      returns "OK" or "Enn"

  qXfer:btrace:read   read the full branch trace data for the current thread

gdb/
	* target.h (enum target_object): Add TARGET_OBJECT_BTRACE.
	* remote.c: Include btrace.h.
	(struct btrace_target_info): New struct.
	(remote_supports_btrace): New function.
	(send_Qbtrace): New function.
	(remote_enable_btrace): New function.
	(remote_disable_btrace): New function.
	(remote_teardown_btrace): New function.
	(remote_read_btrace): New function.
	(init_remote_ops): Add btrace ops.
	(enum <unnamed>): Add btrace packets.
	(struct protocol_feature remote_protocol_features[]): Add btrace packets.
	(_initialize_remote): Add packet configuration for branch tracing.

gdbserver/
	* target.h (struct target_ops): Add btrace ops.
	(target_supports_btrace): New macro.
	(target_enable_btrace): New macro.
	(target_disable_btrace): New macro.
	(target_read_btrace): New macro.
	* gdbthread.h (struct thread_info): Add btrace field.
	* server.c: Include btrace-common.h.
	(handle_btrace_general_set): New function.
	(handle_btrace_enable): New function.
	(handle_btrace_disable): New function.
	(handle_general_set): Call handle_btrace_general_set.
	(handle_qxfer_btrace): New function.
	(struct qxfer qxfer_packets[]): Add btrace entry.
	* inferiors.c (remove_thread): Disable btrace.
	* linux-low: Include linux-btrace.h.
	(linux_low_enable_btrace): New function.
	(linux_low_read_btrace): New function.
	(linux_target_ops): Add btrace ops.
	* configure.srv (i[34567]86-*-linux*): Add linux-btrace.o.
	Add srv_linux_btrace=yes.
	(x86_64-*-linux*): Add linux-btrace.o.
	Add srv_linux_btrace=yes.
	* configure.ac: Define HAVE_LINUX_BTRACE.
	* config.in: Regenerated.
	* configure: Regenerated.
This commit is contained in:
Markus Metzger
2013-03-11 08:35:11 +00:00
parent 5cc22e4cf7
commit 9accd112a6
13 changed files with 489 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
gdb/gdbserver/target.h
View File

@@ -22,6 +22,8 @@
#define TARGET_H
struct emit_ops;
struct btrace_target_info;
struct buffer;
/* Ways to "resume" a thread. */
@@ -397,6 +399,21 @@ struct target_ops
/* Return true if target supports debugging agent. */
int (*supports_agent) (void);
/* Check whether the target supports branch tracing. */
int (*supports_btrace) (void);
/* Enable branch tracing for @ptid and allocate a branch trace target
information struct for reading and for disabling branch trace. */
struct btrace_target_info *(*enable_btrace) (ptid_t ptid);
/* Disable branch tracing. */
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. */
void (*read_btrace) (struct btrace_target_info *, struct buffer *, int type);
};
extern struct target_ops *the_target;
@@ -520,6 +537,18 @@ int kill_inferior (int);
(the_target->supports_agent ? \
(*the_target->supports_agent) () : 0)
#define target_supports_btrace() \
(the_target->supports_btrace ? (*the_target->supports_btrace) () : 0)
#define target_enable_btrace(ptid) \
(*the_target->enable_btrace) (ptid)
#define target_disable_btrace(tinfo) \
(*the_target->disable_btrace) (tinfo)
#define target_read_btrace(tinfo, buffer, type) \
(*the_target->read_btrace) (tinfo, buffer, type)
/* Start non-stop mode, returns 0 on success, -1 on failure. */
int start_non_stop (int nonstop);