diff options
| author | Markus Metzger <markus.t.metzger@intel.com> | 2013-03-27 09:49:47 +0100 |
|---|---|---|
| committer | Markus Metzger <markus.t.metzger@intel.com> | 2014-01-16 13:09:42 +0100 |
| commit | 0b722aec57e2e54083c1d56657762945ad4604fc (patch) | |
| tree | 79d6da6e2638297a8c806d25c25ef1573347ce79 /gdb/record.h | |
| parent | 066ce621f46cabb382b31a682501f0de8120c9fc (diff) | |
record-btrace: extend unwinder
Extend the always failing unwinder to provide the PC based on the call
structure detected in the branch trace.
The unwinder supports normal frames and tailcall frames.
Inline frames are not supported.
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* record.h (record_btrace_frame_unwind)
(record_btrace_tailcall_frame_unwind): New declarations.
* dwarf2-frame: Include record.h
(dwarf2_frame_cfa): Throw an error for btrace frames.
* record-btrace.c: Include hashtab.h.
(btrace_get_bfun_name): New.
(btrace_call_history): Call btrace_get_bfun_name.
(struct btrace_frame_cache): New.
(bfcache): New.
(bfcache_hash, bfcache_eq, bfcache_new): New.
(btrace_get_frame_function): New.
(record_btrace_frame_unwind_stop_reason): Allow unwinding.
(record_btrace_frame_this_id): Compute own id.
(record_btrace_frame_prev_register): Provide PC, throw_error
for all other registers.
(record_btrace_frame_sniffer): Detect btrace frames.
(record_btrace_tailcall_frame_sniffer): New.
(record_btrace_frame_dealloc_cache): New.
(record_btrace_frame_unwind): Add new functions.
(record_btrace_tailcall_frame_unwind): New.
(_initialize_record_btrace): Allocate cache.
* btrace.c (btrace_clear): Call reinit_frame_cache.
* NEWS: Announce it.
testsuite/
* gdb.btrace/record_goto.exp: Add backtrace test.
* gdb.btrace/tailcall.exp: Add backtrace test.
Diffstat (limited to 'gdb/record.h')
| -rw-r--r-- | gdb/record.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gdb/record.h b/gdb/record.h index 17d1772dac..f5987e344a 100644 --- a/gdb/record.h +++ b/gdb/record.h @@ -30,6 +30,10 @@ extern struct cmd_list_element *set_record_cmdlist; extern struct cmd_list_element *show_record_cmdlist; extern struct cmd_list_element *info_record_cmdlist; +/* Unwinders for some record targets. */ +extern const struct frame_unwind record_btrace_frame_unwind; +extern const struct frame_unwind record_btrace_tailcall_frame_unwind; + /* A list of flags specifying what record target methods should print. */ enum record_print_flag { |