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| author | Markus Metzger <markus.t.metzger@intel.com> | 2013-06-03 15:39:35 +0200 |
|---|---|---|
| committer | Markus Metzger <markus.t.metzger@intel.com> | 2014-01-16 13:11:42 +0100 |
| commit | 969c39fbcd6a5675c1f4b97cd23d680e4b5b6487 (patch) | |
| tree | 54d7a2c546ecf86fbe37536db86d0916734203d8 /gdb/NEWS | |
| parent | 0b722aec57e2e54083c1d56657762945ad4604fc (diff) | |
| download | gdb-969c39fbcd6a5675c1f4b97cd23d680e4b5b6487.zip gdb-969c39fbcd6a5675c1f4b97cd23d680e4b5b6487.tar.gz gdb-969c39fbcd6a5675c1f4b97cd23d680e4b5b6487.tar.bz2 | |
btrace, gdbserver: read branch trace incrementally
Read branch trace data incrementally and extend the current trace rather than
discarding it and reading the entire trace buffer each time.
If the branch trace buffer overflowed, we can't extend the current trace so we
discard it and start anew by reading the entire branch trace buffer.
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* common/linux-btrace.c (perf_event_read_bts, linux_read_btrace):
Support delta reads.
(linux_disable_btrace): Change return type.
* common/linux-btrace.h (linux_read_btrace): Change parameters
and return type to allow error reporting. Update users.
(linux_disable_btrace): Change return type. Update users.
* common/btrace-common.h (btrace_read_type) <BTRACE_READ_DELTA>:
New.
(btrace_error): New.
(btrace_block) <begin>: Comment on BEGIN == 0.
* btrace.c (btrace_compute_ftrace): Start from the end of
the current trace.
(btrace_stitch_trace, btrace_clear_history): New.
(btrace_fetch): Read delta trace, return if replaying.
(btrace_clear): Move clear history code to btrace_clear_history.
(parse_xml_btrace): Throw an error if parsing failed.
* target.h (struct target_ops) <to_read_btrace>: Change parameters
and return type to allow error reporting.
(target_read_btrace): Change parameters and return type to allow
error reporting.
* target.c (target_read_btrace): Update.
* remote.c (remote_read_btrace): Support delta reads. Pass
errors on.
* NEWS: Announce it.
gdbserver/
* target.h (target_ops) <read_btrace>: Change parameters and
return type to allow error reporting.
* server.c (handle_qxfer_btrace): Support delta reads. Pass
trace reading errors on.
* linux-low.c (linux_low_read_btrace): Pass trace reading
errors on.
(linux_low_disable_btrace): New.
Diffstat (limited to 'gdb/NEWS')
| -rw-r--r-- | gdb/NEWS | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -22,6 +22,12 @@ For locations inside the execution trace, the back trace is computed based on the information stored in the execution trace. +* New remote packets + +qXfer:btrace:read's annex + The qXfer:btrace:read packet supports a new annex 'delta' to read + branch trace incrementally. + *** Changes in GDB 7.7 * Improved support for process record-replay and reverse debugging on |