0b722aec57
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.
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/* Process record and replay target for GDB, the GNU debugger.
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Copyright (C) 2008-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef _RECORD_H_
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#define _RECORD_H_
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struct cmd_list_element;
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extern unsigned int record_debug;
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/* Allow record targets to add their own sub-commands. */
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extern struct cmd_list_element *record_cmdlist;
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extern struct cmd_list_element *set_record_cmdlist;
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extern struct cmd_list_element *show_record_cmdlist;
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extern struct cmd_list_element *info_record_cmdlist;
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/* Unwinders for some record targets. */
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extern const struct frame_unwind record_btrace_frame_unwind;
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extern const struct frame_unwind record_btrace_tailcall_frame_unwind;
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/* A list of flags specifying what record target methods should print. */
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enum record_print_flag
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{
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/* Print the source file and line (if applicable). */
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RECORD_PRINT_SRC_LINE = (1 << 0),
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/* Print the instruction number range (if applicable). */
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RECORD_PRINT_INSN_RANGE = (1 << 1),
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/* Indent based on call stack depth (if applicable). */
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RECORD_PRINT_INDENT_CALLS = (1 << 2)
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};
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/* Wrapper for target_read_memory that prints a debug message if
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reading memory fails. */
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extern int record_read_memory (struct gdbarch *gdbarch,
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CORE_ADDR memaddr, gdb_byte *myaddr,
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ssize_t len);
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/* The "record goto" command. */
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extern void cmd_record_goto (char *arg, int from_tty);
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/* The default "to_disconnect" target method for record targets. */
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extern void record_disconnect (struct target_ops *, char *, int);
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/* The default "to_detach" target method for record targets. */
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extern void record_detach (struct target_ops *, const char *, int);
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/* The default "to_mourn_inferior" target method for record targets. */
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extern void record_mourn_inferior (struct target_ops *);
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/* The default "to_kill" target method for record targets. */
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extern void record_kill (struct target_ops *);
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/* Find the record_stratum target in the current target stack.
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Returns NULL if none is found. */
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extern struct target_ops *find_record_target (void);
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/* This is to be called by record_stratum targets' open routine before
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it does anything. */
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extern void record_preopen (void);
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#endif /* _RECORD_H_ */
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