4264 lines
119 KiB
C
4264 lines
119 KiB
C
/* Tracing functionality for remote targets in custom GDB protocol
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
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2007, 2008, 2009, 2010 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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#include "defs.h"
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#include "arch-utils.h"
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#include "symtab.h"
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#include "frame.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "gdbcmd.h"
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#include "value.h"
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#include "target.h"
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#include "language.h"
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#include "gdb_string.h"
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#include "inferior.h"
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#include "breakpoint.h"
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#include "tracepoint.h"
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#include "linespec.h"
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#include "regcache.h"
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#include "completer.h"
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#include "block.h"
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#include "dictionary.h"
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#include "observer.h"
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#include "user-regs.h"
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#include "valprint.h"
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#include "gdbcore.h"
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#include "objfiles.h"
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#include "filenames.h"
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#include "gdbthread.h"
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#include "stack.h"
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#include "gdbcore.h"
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#include "ax.h"
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#include "ax-gdb.h"
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/* readline include files */
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#include "readline/readline.h"
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#include "readline/history.h"
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/* readline defines this. */
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#undef savestring
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifndef O_LARGEFILE
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#define O_LARGEFILE 0
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#endif
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extern int hex2bin (const char *hex, gdb_byte *bin, int count);
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extern int bin2hex (const gdb_byte *bin, char *hex, int count);
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extern void stop_tracing ();
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/* Maximum length of an agent aexpression.
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This accounts for the fact that packets are limited to 400 bytes
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(which includes everything -- including the checksum), and assumes
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the worst case of maximum length for each of the pieces of a
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continuation packet.
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NOTE: expressions get mem2hex'ed otherwise this would be twice as
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large. (400 - 31)/2 == 184 */
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#define MAX_AGENT_EXPR_LEN 184
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/* A hook used to notify the UI of tracepoint operations. */
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void (*deprecated_trace_find_hook) (char *arg, int from_tty);
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void (*deprecated_trace_start_stop_hook) (int start, int from_tty);
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extern void (*deprecated_readline_begin_hook) (char *, ...);
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extern char *(*deprecated_readline_hook) (char *);
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extern void (*deprecated_readline_end_hook) (void);
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/* GDB commands implemented in other modules:
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*/
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extern void output_command (char *, int);
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/*
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Tracepoint.c:
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This module defines the following debugger commands:
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trace : set a tracepoint on a function, line, or address.
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info trace : list all debugger-defined tracepoints.
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delete trace : delete one or more tracepoints.
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enable trace : enable one or more tracepoints.
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disable trace : disable one or more tracepoints.
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actions : specify actions to be taken at a tracepoint.
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passcount : specify a pass count for a tracepoint.
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tstart : start a trace experiment.
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tstop : stop a trace experiment.
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tstatus : query the status of a trace experiment.
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tfind : find a trace frame in the trace buffer.
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tdump : print everything collected at the current tracepoint.
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save-tracepoints : write tracepoint setup into a file.
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This module defines the following user-visible debugger variables:
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$trace_frame : sequence number of trace frame currently being debugged.
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$trace_line : source line of trace frame currently being debugged.
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$trace_file : source file of trace frame currently being debugged.
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$tracepoint : tracepoint number of trace frame currently being debugged.
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*/
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/* ======= Important global variables: ======= */
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/* The list of all trace state variables. We don't retain pointers to
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any of these for any reason - API is by name or number only - so it
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works to have a vector of objects. */
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typedef struct trace_state_variable tsv_s;
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DEF_VEC_O(tsv_s);
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static VEC(tsv_s) *tvariables;
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/* The next integer to assign to a variable. */
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static int next_tsv_number = 1;
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/* Number of last traceframe collected. */
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static int traceframe_number;
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/* Tracepoint for last traceframe collected. */
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static int tracepoint_number;
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/* Symbol for function for last traceframe collected */
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static struct symbol *traceframe_fun;
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/* Symtab and line for last traceframe collected */
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static struct symtab_and_line traceframe_sal;
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/* Tracing command lists */
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static struct cmd_list_element *tfindlist;
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/* List of expressions to collect by default at each tracepoint hit. */
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char *default_collect = "";
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static int disconnected_tracing;
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/* This variable controls whether we ask the target for a linear or
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circular trace buffer. */
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static int circular_trace_buffer;
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/* ======= Important command functions: ======= */
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static void trace_actions_command (char *, int);
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static void trace_start_command (char *, int);
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static void trace_stop_command (char *, int);
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static void trace_status_command (char *, int);
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static void trace_find_command (char *, int);
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static void trace_find_pc_command (char *, int);
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static void trace_find_tracepoint_command (char *, int);
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static void trace_find_line_command (char *, int);
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static void trace_find_range_command (char *, int);
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static void trace_find_outside_command (char *, int);
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static void trace_dump_command (char *, int);
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/* support routines */
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struct collection_list;
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static void add_aexpr (struct collection_list *, struct agent_expr *);
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static char *mem2hex (gdb_byte *, char *, int);
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static void add_register (struct collection_list *collection,
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unsigned int regno);
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extern void send_disconnected_tracing_value (int value);
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static void free_uploaded_tps (struct uploaded_tp **utpp);
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static void free_uploaded_tsvs (struct uploaded_tsv **utsvp);
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extern void _initialize_tracepoint (void);
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static struct trace_status trace_status;
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char *stop_reason_names[] = {
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"tunknown",
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"tnotrun",
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"tstop",
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"tfull",
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"tdisconnected",
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"tpasscount",
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"terror"
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};
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struct trace_status *
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current_trace_status ()
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{
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return &trace_status;
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}
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/* Set traceframe number to NUM. */
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static void
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set_traceframe_num (int num)
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{
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traceframe_number = num;
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set_internalvar_integer (lookup_internalvar ("trace_frame"), num);
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}
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/* Set tracepoint number to NUM. */
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static void
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set_tracepoint_num (int num)
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{
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tracepoint_number = num;
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set_internalvar_integer (lookup_internalvar ("tracepoint"), num);
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}
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/* Set externally visible debug variables for querying/printing
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the traceframe context (line, function, file) */
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static void
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set_traceframe_context (struct frame_info *trace_frame)
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{
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CORE_ADDR trace_pc;
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if (trace_frame == NULL) /* Cease debugging any trace buffers. */
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{
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traceframe_fun = 0;
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traceframe_sal.pc = traceframe_sal.line = 0;
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traceframe_sal.symtab = NULL;
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clear_internalvar (lookup_internalvar ("trace_func"));
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clear_internalvar (lookup_internalvar ("trace_file"));
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set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
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return;
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}
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/* Save as globals for internal use. */
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trace_pc = get_frame_pc (trace_frame);
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traceframe_sal = find_pc_line (trace_pc, 0);
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traceframe_fun = find_pc_function (trace_pc);
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/* Save linenumber as "$trace_line", a debugger variable visible to
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users. */
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set_internalvar_integer (lookup_internalvar ("trace_line"),
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traceframe_sal.line);
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/* Save func name as "$trace_func", a debugger variable visible to
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users. */
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if (traceframe_fun == NULL
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|| SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL)
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clear_internalvar (lookup_internalvar ("trace_func"));
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else
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set_internalvar_string (lookup_internalvar ("trace_func"),
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SYMBOL_LINKAGE_NAME (traceframe_fun));
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/* Save file name as "$trace_file", a debugger variable visible to
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users. */
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if (traceframe_sal.symtab == NULL
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|| traceframe_sal.symtab->filename == NULL)
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clear_internalvar (lookup_internalvar ("trace_file"));
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else
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set_internalvar_string (lookup_internalvar ("trace_file"),
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traceframe_sal.symtab->filename);
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}
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/* Create a new trace state variable with the given name. */
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struct trace_state_variable *
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create_trace_state_variable (const char *name)
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{
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struct trace_state_variable tsv;
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memset (&tsv, 0, sizeof (tsv));
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tsv.name = xstrdup (name);
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tsv.number = next_tsv_number++;
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return VEC_safe_push (tsv_s, tvariables, &tsv);
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}
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/* Look for a trace state variable of the given name. */
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struct trace_state_variable *
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find_trace_state_variable (const char *name)
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{
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struct trace_state_variable *tsv;
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int ix;
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for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
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if (strcmp (name, tsv->name) == 0)
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return tsv;
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return NULL;
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}
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void
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delete_trace_state_variable (const char *name)
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{
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struct trace_state_variable *tsv;
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int ix;
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for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
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if (strcmp (name, tsv->name) == 0)
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{
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xfree ((void *)tsv->name);
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VEC_unordered_remove (tsv_s, tvariables, ix);
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return;
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}
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warning (_("No trace variable named \"$%s\", not deleting"), name);
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}
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/* The 'tvariable' command collects a name and optional expression to
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evaluate into an initial value. */
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void
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trace_variable_command (char *args, int from_tty)
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{
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struct expression *expr;
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struct cleanup *old_chain;
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struct internalvar *intvar = NULL;
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LONGEST initval = 0;
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struct trace_state_variable *tsv;
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if (!args || !*args)
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error_no_arg (_("trace state variable name"));
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/* All the possible valid arguments are expressions. */
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expr = parse_expression (args);
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old_chain = make_cleanup (free_current_contents, &expr);
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if (expr->nelts == 0)
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error (_("No expression?"));
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/* Only allow two syntaxes; "$name" and "$name=value". */
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if (expr->elts[0].opcode == OP_INTERNALVAR)
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{
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intvar = expr->elts[1].internalvar;
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}
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else if (expr->elts[0].opcode == BINOP_ASSIGN
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&& expr->elts[1].opcode == OP_INTERNALVAR)
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{
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intvar = expr->elts[2].internalvar;
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initval = value_as_long (evaluate_subexpression_type (expr, 4));
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}
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else
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error (_("Syntax must be $NAME [ = EXPR ]"));
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if (!intvar)
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error (_("No name given"));
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if (strlen (internalvar_name (intvar)) <= 0)
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error (_("Must supply a non-empty variable name"));
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/* If the variable already exists, just change its initial value. */
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tsv = find_trace_state_variable (internalvar_name (intvar));
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if (tsv)
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{
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tsv->initial_value = initval;
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printf_filtered (_("Trace state variable $%s now has initial value %s.\n"),
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tsv->name, plongest (tsv->initial_value));
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return;
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}
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/* Create a new variable. */
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tsv = create_trace_state_variable (internalvar_name (intvar));
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tsv->initial_value = initval;
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printf_filtered (_("Trace state variable $%s created, with initial value %s.\n"),
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tsv->name, plongest (tsv->initial_value));
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do_cleanups (old_chain);
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}
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void
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delete_trace_variable_command (char *args, int from_tty)
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{
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int i, ix;
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char **argv;
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struct cleanup *back_to;
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struct trace_state_variable *tsv;
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if (args == NULL)
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{
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if (query (_("Delete all trace state variables? ")))
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VEC_free (tsv_s, tvariables);
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dont_repeat ();
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return;
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}
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argv = gdb_buildargv (args);
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back_to = make_cleanup_freeargv (argv);
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for (i = 0; argv[i] != NULL; i++)
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{
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if (*argv[i] == '$')
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delete_trace_state_variable (argv[i] + 1);
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else
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warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv[i]);
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}
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do_cleanups (back_to);
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dont_repeat ();
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}
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void
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tvariables_info_1 (void)
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{
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struct trace_state_variable *tsv;
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int ix;
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int count = 0;
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struct cleanup *back_to;
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if (VEC_length (tsv_s, tvariables) == 0 && !ui_out_is_mi_like_p (uiout))
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{
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printf_filtered (_("No trace state variables.\n"));
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return;
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}
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/* Try to acquire values from the target. */
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for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix, ++count)
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tsv->value_known = target_get_trace_state_variable_value (tsv->number,
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&(tsv->value));
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back_to = make_cleanup_ui_out_table_begin_end (uiout, 3,
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count, "trace-variables");
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ui_out_table_header (uiout, 15, ui_left, "name", "Name");
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ui_out_table_header (uiout, 11, ui_left, "initial", "Initial");
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ui_out_table_header (uiout, 11, ui_left, "current", "Current");
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ui_out_table_body (uiout);
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for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
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{
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struct cleanup *back_to2;
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char *c;
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char *name;
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back_to2 = make_cleanup_ui_out_tuple_begin_end (uiout, "variable");
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name = concat ("$", tsv->name, NULL);
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make_cleanup (xfree, name);
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ui_out_field_string (uiout, "name", name);
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ui_out_field_string (uiout, "initial", plongest (tsv->initial_value));
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if (tsv->value_known)
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c = plongest (tsv->value);
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else if (ui_out_is_mi_like_p (uiout))
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/* For MI, we prefer not to use magic string constants, but rather
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omit the field completely. The difference between unknown and
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undefined does not seem important enough to represent. */
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c = NULL;
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else if (current_trace_status ()->running || traceframe_number >= 0)
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/* The value is/was defined, but we don't have it. */
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c = "<unknown>";
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else
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/* It is not meaningful to ask about the value. */
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c = "<undefined>";
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if (c)
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ui_out_field_string (uiout, "current", c);
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ui_out_text (uiout, "\n");
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do_cleanups (back_to2);
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}
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do_cleanups (back_to);
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}
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/* List all the trace state variables. */
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static void
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tvariables_info (char *args, int from_tty)
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{
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tvariables_info_1 ();
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}
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/* Stash definitions of tsvs into the given file. */
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void
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save_trace_state_variables (struct ui_file *fp)
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{
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struct trace_state_variable *tsv;
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int ix;
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for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
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{
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fprintf_unfiltered (fp, "tvariable $%s", tsv->name);
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if (tsv->initial_value)
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fprintf_unfiltered (fp, " = %s", plongest (tsv->initial_value));
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fprintf_unfiltered (fp, "\n");
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}
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}
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/* ACTIONS functions: */
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/* The three functions:
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collect_pseudocommand,
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while_stepping_pseudocommand, and
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end_actions_pseudocommand
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are placeholders for "commands" that are actually ONLY to be used
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within a tracepoint action list. If the actual function is ever called,
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it means that somebody issued the "command" at the top level,
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which is always an error. */
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void
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end_actions_pseudocommand (char *args, int from_tty)
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{
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error (_("This command cannot be used at the top level."));
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}
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void
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while_stepping_pseudocommand (char *args, int from_tty)
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{
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error (_("This command can only be used in a tracepoint actions list."));
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}
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static void
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collect_pseudocommand (char *args, int from_tty)
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{
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error (_("This command can only be used in a tracepoint actions list."));
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}
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static void
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teval_pseudocommand (char *args, int from_tty)
|
|
{
|
|
error (_("This command can only be used in a tracepoint actions list."));
|
|
}
|
|
|
|
/* Enter a list of actions for a tracepoint. */
|
|
static void
|
|
trace_actions_command (char *args, int from_tty)
|
|
{
|
|
struct breakpoint *t;
|
|
struct command_line *l;
|
|
|
|
t = get_tracepoint_by_number (&args, 0, 1);
|
|
if (t)
|
|
{
|
|
char *tmpbuf =
|
|
xstrprintf ("Enter actions for tracepoint %d, one per line.",
|
|
t->number);
|
|
struct cleanup *cleanups = make_cleanup (xfree, tmpbuf);
|
|
|
|
l = read_command_lines (tmpbuf, from_tty, 1, check_tracepoint_command, t);
|
|
do_cleanups (cleanups);
|
|
breakpoint_set_commands (t, l);
|
|
}
|
|
/* else just return */
|
|
}
|
|
|
|
/* Report the results of checking the agent expression, as errors or
|
|
internal errors. */
|
|
|
|
static void
|
|
report_agent_reqs_errors (struct agent_expr *aexpr, struct agent_reqs *areqs)
|
|
{
|
|
/* All of the "flaws" are serious bytecode generation issues that
|
|
should never occur. */
|
|
if (areqs->flaw != agent_flaw_none)
|
|
internal_error (__FILE__, __LINE__, _("expression is malformed"));
|
|
|
|
/* If analysis shows a stack underflow, GDB must have done something
|
|
badly wrong in its bytecode generation. */
|
|
if (areqs->min_height < 0)
|
|
internal_error (__FILE__, __LINE__,
|
|
_("expression has min height < 0"));
|
|
|
|
/* Issue this error if the stack is predicted to get too deep. The
|
|
limit is rather arbitrary; a better scheme might be for the
|
|
target to report how much stack it will have available. The
|
|
depth roughly corresponds to parenthesization, so a limit of 20
|
|
amounts to 20 levels of expression nesting, which is actually
|
|
a pretty big hairy expression. */
|
|
if (areqs->max_height > 20)
|
|
error (_("Expression is too complicated."));
|
|
}
|
|
|
|
/* worker function */
|
|
void
|
|
validate_actionline (char **line, struct breakpoint *t)
|
|
{
|
|
struct cmd_list_element *c;
|
|
struct expression *exp = NULL;
|
|
struct cleanup *old_chain = NULL;
|
|
char *p, *tmp_p;
|
|
struct bp_location *loc;
|
|
struct agent_expr *aexpr;
|
|
struct agent_reqs areqs;
|
|
|
|
/* if EOF is typed, *line is NULL */
|
|
if (*line == NULL)
|
|
return;
|
|
|
|
for (p = *line; isspace ((int) *p);)
|
|
p++;
|
|
|
|
/* Symbol lookup etc. */
|
|
if (*p == '\0') /* empty line: just prompt for another line. */
|
|
return;
|
|
|
|
if (*p == '#') /* comment line */
|
|
return;
|
|
|
|
c = lookup_cmd (&p, cmdlist, "", -1, 1);
|
|
if (c == 0)
|
|
error (_("`%s' is not a tracepoint action, or is ambiguous."), p);
|
|
|
|
if (cmd_cfunc_eq (c, collect_pseudocommand))
|
|
{
|
|
do
|
|
{ /* repeat over a comma-separated list */
|
|
QUIT; /* allow user to bail out with ^C */
|
|
while (isspace ((int) *p))
|
|
p++;
|
|
|
|
if (*p == '$') /* look for special pseudo-symbols */
|
|
{
|
|
if ((0 == strncasecmp ("reg", p + 1, 3)) ||
|
|
(0 == strncasecmp ("arg", p + 1, 3)) ||
|
|
(0 == strncasecmp ("loc", p + 1, 3)))
|
|
{
|
|
p = strchr (p, ',');
|
|
continue;
|
|
}
|
|
/* else fall thru, treat p as an expression and parse it! */
|
|
}
|
|
tmp_p = p;
|
|
for (loc = t->loc; loc; loc = loc->next)
|
|
{
|
|
p = tmp_p;
|
|
exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
|
|
old_chain = make_cleanup (free_current_contents, &exp);
|
|
|
|
if (exp->elts[0].opcode == OP_VAR_VALUE)
|
|
{
|
|
if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST)
|
|
{
|
|
error (_("constant `%s' (value %ld) will not be collected."),
|
|
SYMBOL_PRINT_NAME (exp->elts[2].symbol),
|
|
SYMBOL_VALUE (exp->elts[2].symbol));
|
|
}
|
|
else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT)
|
|
{
|
|
error (_("`%s' is optimized away and cannot be collected."),
|
|
SYMBOL_PRINT_NAME (exp->elts[2].symbol));
|
|
}
|
|
}
|
|
|
|
/* We have something to collect, make sure that the expr to
|
|
bytecode translator can handle it and that it's not too
|
|
long. */
|
|
aexpr = gen_trace_for_expr (loc->address, exp);
|
|
make_cleanup_free_agent_expr (aexpr);
|
|
|
|
if (aexpr->len > MAX_AGENT_EXPR_LEN)
|
|
error (_("Expression is too complicated."));
|
|
|
|
ax_reqs (aexpr, &areqs);
|
|
(void) make_cleanup (xfree, areqs.reg_mask);
|
|
|
|
report_agent_reqs_errors (aexpr, &areqs);
|
|
|
|
do_cleanups (old_chain);
|
|
}
|
|
}
|
|
while (p && *p++ == ',');
|
|
}
|
|
|
|
else if (cmd_cfunc_eq (c, teval_pseudocommand))
|
|
{
|
|
do
|
|
{ /* repeat over a comma-separated list */
|
|
QUIT; /* allow user to bail out with ^C */
|
|
while (isspace ((int) *p))
|
|
p++;
|
|
|
|
tmp_p = p;
|
|
for (loc = t->loc; loc; loc = loc->next)
|
|
{
|
|
p = tmp_p;
|
|
/* Only expressions are allowed for this action. */
|
|
exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
|
|
old_chain = make_cleanup (free_current_contents, &exp);
|
|
|
|
/* We have something to evaluate, make sure that the expr to
|
|
bytecode translator can handle it and that it's not too
|
|
long. */
|
|
aexpr = gen_eval_for_expr (loc->address, exp);
|
|
make_cleanup_free_agent_expr (aexpr);
|
|
|
|
if (aexpr->len > MAX_AGENT_EXPR_LEN)
|
|
error (_("Expression is too complicated."));
|
|
|
|
ax_reqs (aexpr, &areqs);
|
|
(void) make_cleanup (xfree, areqs.reg_mask);
|
|
|
|
report_agent_reqs_errors (aexpr, &areqs);
|
|
|
|
do_cleanups (old_chain);
|
|
}
|
|
}
|
|
while (p && *p++ == ',');
|
|
}
|
|
|
|
else if (cmd_cfunc_eq (c, while_stepping_pseudocommand))
|
|
{
|
|
char *steparg; /* in case warning is necessary */
|
|
|
|
while (isspace ((int) *p))
|
|
p++;
|
|
steparg = p;
|
|
|
|
if (*p == '\0' || (t->step_count = strtol (p, &p, 0)) == 0)
|
|
error (_("while-stepping step count `%s' is malformed."), *line);
|
|
}
|
|
|
|
else if (cmd_cfunc_eq (c, end_actions_pseudocommand))
|
|
;
|
|
|
|
else
|
|
error (_("`%s' is not a supported tracepoint action."), *line);
|
|
}
|
|
|
|
enum {
|
|
memrange_absolute = -1
|
|
};
|
|
|
|
struct memrange
|
|
{
|
|
int type; /* memrange_absolute for absolute memory range,
|
|
else basereg number */
|
|
bfd_signed_vma start;
|
|
bfd_signed_vma end;
|
|
};
|
|
|
|
struct collection_list
|
|
{
|
|
unsigned char regs_mask[32]; /* room for up to 256 regs */
|
|
long listsize;
|
|
long next_memrange;
|
|
struct memrange *list;
|
|
long aexpr_listsize; /* size of array pointed to by expr_list elt */
|
|
long next_aexpr_elt;
|
|
struct agent_expr **aexpr_list;
|
|
|
|
}
|
|
tracepoint_list, stepping_list;
|
|
|
|
/* MEMRANGE functions: */
|
|
|
|
static int memrange_cmp (const void *, const void *);
|
|
|
|
/* compare memranges for qsort */
|
|
static int
|
|
memrange_cmp (const void *va, const void *vb)
|
|
{
|
|
const struct memrange *a = va, *b = vb;
|
|
|
|
if (a->type < b->type)
|
|
return -1;
|
|
if (a->type > b->type)
|
|
return 1;
|
|
if (a->type == memrange_absolute)
|
|
{
|
|
if ((bfd_vma) a->start < (bfd_vma) b->start)
|
|
return -1;
|
|
if ((bfd_vma) a->start > (bfd_vma) b->start)
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
if (a->start < b->start)
|
|
return -1;
|
|
if (a->start > b->start)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Sort the memrange list using qsort, and merge adjacent memranges. */
|
|
static void
|
|
memrange_sortmerge (struct collection_list *memranges)
|
|
{
|
|
int a, b;
|
|
|
|
qsort (memranges->list, memranges->next_memrange,
|
|
sizeof (struct memrange), memrange_cmp);
|
|
if (memranges->next_memrange > 0)
|
|
{
|
|
for (a = 0, b = 1; b < memranges->next_memrange; b++)
|
|
{
|
|
if (memranges->list[a].type == memranges->list[b].type &&
|
|
memranges->list[b].start - memranges->list[a].end <=
|
|
MAX_REGISTER_SIZE)
|
|
{
|
|
/* memrange b starts before memrange a ends; merge them. */
|
|
if (memranges->list[b].end > memranges->list[a].end)
|
|
memranges->list[a].end = memranges->list[b].end;
|
|
continue; /* next b, same a */
|
|
}
|
|
a++; /* next a */
|
|
if (a != b)
|
|
memcpy (&memranges->list[a], &memranges->list[b],
|
|
sizeof (struct memrange));
|
|
}
|
|
memranges->next_memrange = a + 1;
|
|
}
|
|
}
|
|
|
|
/* Add a register to a collection list. */
|
|
static void
|
|
add_register (struct collection_list *collection, unsigned int regno)
|
|
{
|
|
if (info_verbose)
|
|
printf_filtered ("collect register %d\n", regno);
|
|
if (regno >= (8 * sizeof (collection->regs_mask)))
|
|
error (_("Internal: register number %d too large for tracepoint"),
|
|
regno);
|
|
collection->regs_mask[regno / 8] |= 1 << (regno % 8);
|
|
}
|
|
|
|
/* Add a memrange to a collection list */
|
|
static void
|
|
add_memrange (struct collection_list *memranges,
|
|
int type, bfd_signed_vma base,
|
|
unsigned long len)
|
|
{
|
|
if (info_verbose)
|
|
{
|
|
printf_filtered ("(%d,", type);
|
|
printf_vma (base);
|
|
printf_filtered (",%ld)\n", len);
|
|
}
|
|
|
|
/* type: memrange_absolute == memory, other n == basereg */
|
|
memranges->list[memranges->next_memrange].type = type;
|
|
/* base: addr if memory, offset if reg relative. */
|
|
memranges->list[memranges->next_memrange].start = base;
|
|
/* len: we actually save end (base + len) for convenience */
|
|
memranges->list[memranges->next_memrange].end = base + len;
|
|
memranges->next_memrange++;
|
|
if (memranges->next_memrange >= memranges->listsize)
|
|
{
|
|
memranges->listsize *= 2;
|
|
memranges->list = xrealloc (memranges->list,
|
|
memranges->listsize);
|
|
}
|
|
|
|
if (type != memrange_absolute) /* Better collect the base register! */
|
|
add_register (memranges, type);
|
|
}
|
|
|
|
/* Add a symbol to a collection list. */
|
|
static void
|
|
collect_symbol (struct collection_list *collect,
|
|
struct symbol *sym,
|
|
struct gdbarch *gdbarch,
|
|
long frame_regno, long frame_offset,
|
|
CORE_ADDR scope)
|
|
{
|
|
unsigned long len;
|
|
unsigned int reg;
|
|
bfd_signed_vma offset;
|
|
int treat_as_expr = 0;
|
|
|
|
len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)));
|
|
switch (SYMBOL_CLASS (sym))
|
|
{
|
|
default:
|
|
printf_filtered ("%s: don't know symbol class %d\n",
|
|
SYMBOL_PRINT_NAME (sym),
|
|
SYMBOL_CLASS (sym));
|
|
break;
|
|
case LOC_CONST:
|
|
printf_filtered ("constant %s (value %ld) will not be collected.\n",
|
|
SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE (sym));
|
|
break;
|
|
case LOC_STATIC:
|
|
offset = SYMBOL_VALUE_ADDRESS (sym);
|
|
if (info_verbose)
|
|
{
|
|
char tmp[40];
|
|
|
|
sprintf_vma (tmp, offset);
|
|
printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
|
|
SYMBOL_PRINT_NAME (sym), len,
|
|
tmp /* address */);
|
|
}
|
|
/* A struct may be a C++ class with static fields, go to general
|
|
expression handling. */
|
|
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
|
|
treat_as_expr = 1;
|
|
else
|
|
add_memrange (collect, memrange_absolute, offset, len);
|
|
break;
|
|
case LOC_REGISTER:
|
|
reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
|
|
if (info_verbose)
|
|
printf_filtered ("LOC_REG[parm] %s: ",
|
|
SYMBOL_PRINT_NAME (sym));
|
|
add_register (collect, reg);
|
|
/* Check for doubles stored in two registers. */
|
|
/* FIXME: how about larger types stored in 3 or more regs? */
|
|
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
|
|
len > register_size (gdbarch, reg))
|
|
add_register (collect, reg + 1);
|
|
break;
|
|
case LOC_REF_ARG:
|
|
printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
|
|
printf_filtered (" (will not collect %s)\n",
|
|
SYMBOL_PRINT_NAME (sym));
|
|
break;
|
|
case LOC_ARG:
|
|
reg = frame_regno;
|
|
offset = frame_offset + SYMBOL_VALUE (sym);
|
|
if (info_verbose)
|
|
{
|
|
printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
|
|
SYMBOL_PRINT_NAME (sym), len);
|
|
printf_vma (offset);
|
|
printf_filtered (" from frame ptr reg %d\n", reg);
|
|
}
|
|
add_memrange (collect, reg, offset, len);
|
|
break;
|
|
case LOC_REGPARM_ADDR:
|
|
reg = SYMBOL_VALUE (sym);
|
|
offset = 0;
|
|
if (info_verbose)
|
|
{
|
|
printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
|
|
SYMBOL_PRINT_NAME (sym), len);
|
|
printf_vma (offset);
|
|
printf_filtered (" from reg %d\n", reg);
|
|
}
|
|
add_memrange (collect, reg, offset, len);
|
|
break;
|
|
case LOC_LOCAL:
|
|
reg = frame_regno;
|
|
offset = frame_offset + SYMBOL_VALUE (sym);
|
|
if (info_verbose)
|
|
{
|
|
printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
|
|
SYMBOL_PRINT_NAME (sym), len);
|
|
printf_vma (offset);
|
|
printf_filtered (" from frame ptr reg %d\n", reg);
|
|
}
|
|
add_memrange (collect, reg, offset, len);
|
|
break;
|
|
|
|
case LOC_UNRESOLVED:
|
|
treat_as_expr = 1;
|
|
break;
|
|
|
|
case LOC_OPTIMIZED_OUT:
|
|
printf_filtered ("%s has been optimized out of existence.\n",
|
|
SYMBOL_PRINT_NAME (sym));
|
|
break;
|
|
|
|
case LOC_COMPUTED:
|
|
treat_as_expr = 1;
|
|
break;
|
|
}
|
|
|
|
/* Expressions are the most general case. */
|
|
if (treat_as_expr)
|
|
{
|
|
struct agent_expr *aexpr;
|
|
struct cleanup *old_chain1 = NULL;
|
|
struct agent_reqs areqs;
|
|
|
|
aexpr = gen_trace_for_var (scope, gdbarch, sym);
|
|
|
|
/* It can happen that the symbol is recorded as a computed
|
|
location, but it's been optimized away and doesn't actually
|
|
have a location expression. */
|
|
if (!aexpr)
|
|
{
|
|
printf_filtered ("%s has been optimized out of existence.\n",
|
|
SYMBOL_PRINT_NAME (sym));
|
|
return;
|
|
}
|
|
|
|
old_chain1 = make_cleanup_free_agent_expr (aexpr);
|
|
|
|
ax_reqs (aexpr, &areqs);
|
|
|
|
report_agent_reqs_errors (aexpr, &areqs);
|
|
|
|
discard_cleanups (old_chain1);
|
|
add_aexpr (collect, aexpr);
|
|
|
|
/* take care of the registers */
|
|
if (areqs.reg_mask_len > 0)
|
|
{
|
|
int ndx1, ndx2;
|
|
|
|
for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
if (areqs.reg_mask[ndx1] != 0)
|
|
{
|
|
/* assume chars have 8 bits */
|
|
for (ndx2 = 0; ndx2 < 8; ndx2++)
|
|
if (areqs.reg_mask[ndx1] & (1 << ndx2))
|
|
/* it's used -- record it */
|
|
add_register (collect, ndx1 * 8 + ndx2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Data to be passed around in the calls to the locals and args
|
|
iterators. */
|
|
|
|
struct add_local_symbols_data
|
|
{
|
|
struct collection_list *collect;
|
|
struct gdbarch *gdbarch;
|
|
CORE_ADDR pc;
|
|
long frame_regno;
|
|
long frame_offset;
|
|
int count;
|
|
};
|
|
|
|
/* The callback for the locals and args iterators */
|
|
|
|
static void
|
|
do_collect_symbol (const char *print_name,
|
|
struct symbol *sym,
|
|
void *cb_data)
|
|
{
|
|
struct add_local_symbols_data *p = cb_data;
|
|
|
|
collect_symbol (p->collect, sym, p->gdbarch, p->frame_regno,
|
|
p->frame_offset, p->pc);
|
|
p->count++;
|
|
}
|
|
|
|
/* Add all locals (or args) symbols to collection list */
|
|
static void
|
|
add_local_symbols (struct collection_list *collect,
|
|
struct gdbarch *gdbarch, CORE_ADDR pc,
|
|
long frame_regno, long frame_offset, int type)
|
|
{
|
|
struct block *block;
|
|
struct add_local_symbols_data cb_data;
|
|
|
|
cb_data.collect = collect;
|
|
cb_data.gdbarch = gdbarch;
|
|
cb_data.pc = pc;
|
|
cb_data.frame_regno = frame_regno;
|
|
cb_data.frame_offset = frame_offset;
|
|
cb_data.count = 0;
|
|
|
|
if (type == 'L')
|
|
{
|
|
block = block_for_pc (pc);
|
|
if (block == NULL)
|
|
{
|
|
warning (_("Can't collect locals; "
|
|
"no symbol table info available.\n"));
|
|
return;
|
|
}
|
|
|
|
iterate_over_block_local_vars (block, do_collect_symbol, &cb_data);
|
|
if (cb_data.count == 0)
|
|
warning (_("No locals found in scope."));
|
|
}
|
|
else
|
|
{
|
|
pc = get_pc_function_start (pc);
|
|
block = block_for_pc (pc);
|
|
if (block == NULL)
|
|
{
|
|
warning (_("Can't collect args; no symbol table info available.\n"));
|
|
return;
|
|
}
|
|
|
|
iterate_over_block_arg_vars (block, do_collect_symbol, &cb_data);
|
|
if (cb_data.count == 0)
|
|
warning (_("No args found in scope."));
|
|
}
|
|
}
|
|
|
|
/* worker function */
|
|
static void
|
|
clear_collection_list (struct collection_list *list)
|
|
{
|
|
int ndx;
|
|
|
|
list->next_memrange = 0;
|
|
for (ndx = 0; ndx < list->next_aexpr_elt; ndx++)
|
|
{
|
|
free_agent_expr (list->aexpr_list[ndx]);
|
|
list->aexpr_list[ndx] = NULL;
|
|
}
|
|
list->next_aexpr_elt = 0;
|
|
memset (list->regs_mask, 0, sizeof (list->regs_mask));
|
|
}
|
|
|
|
/* reduce a collection list to string form (for gdb protocol) */
|
|
static char **
|
|
stringify_collection_list (struct collection_list *list, char *string)
|
|
{
|
|
char temp_buf[2048];
|
|
char tmp2[40];
|
|
int count;
|
|
int ndx = 0;
|
|
char *(*str_list)[];
|
|
char *end;
|
|
long i;
|
|
|
|
count = 1 + list->next_memrange + list->next_aexpr_elt + 1;
|
|
str_list = (char *(*)[]) xmalloc (count * sizeof (char *));
|
|
|
|
for (i = sizeof (list->regs_mask) - 1; i > 0; i--)
|
|
if (list->regs_mask[i] != 0) /* skip leading zeroes in regs_mask */
|
|
break;
|
|
if (list->regs_mask[i] != 0) /* prepare to send regs_mask to the stub */
|
|
{
|
|
if (info_verbose)
|
|
printf_filtered ("\nCollecting registers (mask): 0x");
|
|
end = temp_buf;
|
|
*end++ = 'R';
|
|
for (; i >= 0; i--)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
if (info_verbose)
|
|
printf_filtered ("%02X", list->regs_mask[i]);
|
|
sprintf (end, "%02X", list->regs_mask[i]);
|
|
end += 2;
|
|
}
|
|
(*str_list)[ndx] = xstrdup (temp_buf);
|
|
ndx++;
|
|
}
|
|
if (info_verbose)
|
|
printf_filtered ("\n");
|
|
if (list->next_memrange > 0 && info_verbose)
|
|
printf_filtered ("Collecting memranges: \n");
|
|
for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
sprintf_vma (tmp2, list->list[i].start);
|
|
if (info_verbose)
|
|
{
|
|
printf_filtered ("(%d, %s, %ld)\n",
|
|
list->list[i].type,
|
|
tmp2,
|
|
(long) (list->list[i].end - list->list[i].start));
|
|
}
|
|
if (count + 27 > MAX_AGENT_EXPR_LEN)
|
|
{
|
|
(*str_list)[ndx] = savestring (temp_buf, count);
|
|
ndx++;
|
|
count = 0;
|
|
end = temp_buf;
|
|
}
|
|
|
|
{
|
|
bfd_signed_vma length = list->list[i].end - list->list[i].start;
|
|
|
|
/* The "%X" conversion specifier expects an unsigned argument,
|
|
so passing -1 (memrange_absolute) to it directly gives you
|
|
"FFFFFFFF" (or more, depending on sizeof (unsigned)).
|
|
Special-case it. */
|
|
if (list->list[i].type == memrange_absolute)
|
|
sprintf (end, "M-1,%s,%lX", tmp2, (long) length);
|
|
else
|
|
sprintf (end, "M%X,%s,%lX", list->list[i].type, tmp2, (long) length);
|
|
}
|
|
|
|
count += strlen (end);
|
|
end = temp_buf + count;
|
|
}
|
|
|
|
for (i = 0; i < list->next_aexpr_elt; i++)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN)
|
|
{
|
|
(*str_list)[ndx] = savestring (temp_buf, count);
|
|
ndx++;
|
|
count = 0;
|
|
end = temp_buf;
|
|
}
|
|
sprintf (end, "X%08X,", list->aexpr_list[i]->len);
|
|
end += 10; /* 'X' + 8 hex digits + ',' */
|
|
count += 10;
|
|
|
|
end = mem2hex (list->aexpr_list[i]->buf,
|
|
end, list->aexpr_list[i]->len);
|
|
count += 2 * list->aexpr_list[i]->len;
|
|
}
|
|
|
|
if (count != 0)
|
|
{
|
|
(*str_list)[ndx] = savestring (temp_buf, count);
|
|
ndx++;
|
|
count = 0;
|
|
end = temp_buf;
|
|
}
|
|
(*str_list)[ndx] = NULL;
|
|
|
|
if (ndx == 0)
|
|
{
|
|
xfree (str_list);
|
|
return NULL;
|
|
}
|
|
else
|
|
return *str_list;
|
|
}
|
|
|
|
|
|
static void
|
|
encode_actions_1 (struct command_line *action,
|
|
struct breakpoint *t,
|
|
struct bp_location *tloc,
|
|
int frame_reg,
|
|
LONGEST frame_offset,
|
|
struct collection_list *collect,
|
|
struct collection_list *stepping_list)
|
|
{
|
|
char *action_exp;
|
|
struct expression *exp = NULL;
|
|
struct command_line *actions;
|
|
int i;
|
|
struct value *tempval;
|
|
struct cmd_list_element *cmd;
|
|
struct agent_expr *aexpr;
|
|
|
|
for (; action; action = action->next)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
action_exp = action->line;
|
|
while (isspace ((int) *action_exp))
|
|
action_exp++;
|
|
|
|
cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
|
|
if (cmd == 0)
|
|
error (_("Bad action list item: %s"), action_exp);
|
|
|
|
if (cmd_cfunc_eq (cmd, collect_pseudocommand))
|
|
{
|
|
do
|
|
{ /* repeat over a comma-separated list */
|
|
QUIT; /* allow user to bail out with ^C */
|
|
while (isspace ((int) *action_exp))
|
|
action_exp++;
|
|
|
|
if (0 == strncasecmp ("$reg", action_exp, 4))
|
|
{
|
|
for (i = 0; i < gdbarch_num_regs (t->gdbarch); i++)
|
|
add_register (collect, i);
|
|
action_exp = strchr (action_exp, ','); /* more? */
|
|
}
|
|
else if (0 == strncasecmp ("$arg", action_exp, 4))
|
|
{
|
|
add_local_symbols (collect,
|
|
t->gdbarch,
|
|
tloc->address,
|
|
frame_reg,
|
|
frame_offset,
|
|
'A');
|
|
action_exp = strchr (action_exp, ','); /* more? */
|
|
}
|
|
else if (0 == strncasecmp ("$loc", action_exp, 4))
|
|
{
|
|
add_local_symbols (collect,
|
|
t->gdbarch,
|
|
tloc->address,
|
|
frame_reg,
|
|
frame_offset,
|
|
'L');
|
|
action_exp = strchr (action_exp, ','); /* more? */
|
|
}
|
|
else
|
|
{
|
|
unsigned long addr, len;
|
|
struct cleanup *old_chain = NULL;
|
|
struct cleanup *old_chain1 = NULL;
|
|
struct agent_reqs areqs;
|
|
|
|
exp = parse_exp_1 (&action_exp,
|
|
block_for_pc (tloc->address), 1);
|
|
old_chain = make_cleanup (free_current_contents, &exp);
|
|
|
|
switch (exp->elts[0].opcode)
|
|
{
|
|
case OP_REGISTER:
|
|
{
|
|
const char *name = &exp->elts[2].string;
|
|
|
|
i = user_reg_map_name_to_regnum (t->gdbarch,
|
|
name, strlen (name));
|
|
if (i == -1)
|
|
internal_error (__FILE__, __LINE__,
|
|
_("Register $%s not available"),
|
|
name);
|
|
if (info_verbose)
|
|
printf_filtered ("OP_REGISTER: ");
|
|
add_register (collect, i);
|
|
break;
|
|
}
|
|
|
|
case UNOP_MEMVAL:
|
|
/* safe because we know it's a simple expression */
|
|
tempval = evaluate_expression (exp);
|
|
addr = value_address (tempval);
|
|
len = TYPE_LENGTH (check_typedef (exp->elts[1].type));
|
|
add_memrange (collect, memrange_absolute, addr, len);
|
|
break;
|
|
|
|
case OP_VAR_VALUE:
|
|
collect_symbol (collect,
|
|
exp->elts[2].symbol,
|
|
t->gdbarch,
|
|
frame_reg,
|
|
frame_offset,
|
|
tloc->address);
|
|
break;
|
|
|
|
default: /* full-fledged expression */
|
|
aexpr = gen_trace_for_expr (tloc->address, exp);
|
|
|
|
old_chain1 = make_cleanup_free_agent_expr (aexpr);
|
|
|
|
ax_reqs (aexpr, &areqs);
|
|
|
|
report_agent_reqs_errors (aexpr, &areqs);
|
|
|
|
discard_cleanups (old_chain1);
|
|
add_aexpr (collect, aexpr);
|
|
|
|
/* take care of the registers */
|
|
if (areqs.reg_mask_len > 0)
|
|
{
|
|
int ndx1;
|
|
int ndx2;
|
|
|
|
for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
if (areqs.reg_mask[ndx1] != 0)
|
|
{
|
|
/* assume chars have 8 bits */
|
|
for (ndx2 = 0; ndx2 < 8; ndx2++)
|
|
if (areqs.reg_mask[ndx1] & (1 << ndx2))
|
|
/* it's used -- record it */
|
|
add_register (collect,
|
|
ndx1 * 8 + ndx2);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
} /* switch */
|
|
do_cleanups (old_chain);
|
|
} /* do */
|
|
}
|
|
while (action_exp && *action_exp++ == ',');
|
|
} /* if */
|
|
else if (cmd_cfunc_eq (cmd, teval_pseudocommand))
|
|
{
|
|
do
|
|
{ /* repeat over a comma-separated list */
|
|
QUIT; /* allow user to bail out with ^C */
|
|
while (isspace ((int) *action_exp))
|
|
action_exp++;
|
|
|
|
{
|
|
unsigned long addr, len;
|
|
struct cleanup *old_chain = NULL;
|
|
struct cleanup *old_chain1 = NULL;
|
|
struct agent_reqs areqs;
|
|
|
|
exp = parse_exp_1 (&action_exp,
|
|
block_for_pc (tloc->address), 1);
|
|
old_chain = make_cleanup (free_current_contents, &exp);
|
|
|
|
aexpr = gen_eval_for_expr (tloc->address, exp);
|
|
old_chain1 = make_cleanup_free_agent_expr (aexpr);
|
|
|
|
ax_reqs (aexpr, &areqs);
|
|
|
|
report_agent_reqs_errors (aexpr, &areqs);
|
|
|
|
discard_cleanups (old_chain1);
|
|
/* Even though we're not officially collecting, add
|
|
to the collect list anyway. */
|
|
add_aexpr (collect, aexpr);
|
|
|
|
do_cleanups (old_chain);
|
|
} /* do */
|
|
}
|
|
while (action_exp && *action_exp++ == ',');
|
|
} /* if */
|
|
else if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
|
|
{
|
|
/* We check against nested while-stepping when setting
|
|
breakpoint action, so no way to run into nested
|
|
here. */
|
|
gdb_assert (stepping_list);
|
|
|
|
encode_actions_1 (action->body_list[0], t, tloc, frame_reg, frame_offset,
|
|
stepping_list, NULL);
|
|
}
|
|
else
|
|
error (_("Invalid tracepoint command '%s'"), action->line);
|
|
} /* for */
|
|
}
|
|
|
|
/* Render all actions into gdb protocol. */
|
|
/*static*/ void
|
|
encode_actions (struct breakpoint *t, struct bp_location *tloc,
|
|
char ***tdp_actions, char ***stepping_actions)
|
|
{
|
|
static char tdp_buff[2048], step_buff[2048];
|
|
char *default_collect_line = NULL;
|
|
struct command_line *actions;
|
|
struct command_line *default_collect_action = NULL;
|
|
int frame_reg;
|
|
LONGEST frame_offset;
|
|
struct cleanup *back_to;
|
|
|
|
back_to = make_cleanup (null_cleanup, NULL);
|
|
|
|
clear_collection_list (&tracepoint_list);
|
|
clear_collection_list (&stepping_list);
|
|
|
|
*tdp_actions = NULL;
|
|
*stepping_actions = NULL;
|
|
|
|
gdbarch_virtual_frame_pointer (t->gdbarch,
|
|
t->loc->address, &frame_reg, &frame_offset);
|
|
|
|
actions = breakpoint_commands (t);
|
|
|
|
/* If there are default expressions to collect, make up a collect
|
|
action and prepend to the action list to encode. Note that since
|
|
validation is per-tracepoint (local var "xyz" might be valid for
|
|
one tracepoint and not another, etc), we make up the action on
|
|
the fly, and don't cache it. */
|
|
if (*default_collect)
|
|
{
|
|
char *line;
|
|
|
|
default_collect_line = xstrprintf ("collect %s", default_collect);
|
|
make_cleanup (xfree, default_collect_line);
|
|
|
|
line = default_collect_line;
|
|
validate_actionline (&line, t);
|
|
|
|
default_collect_action = xmalloc (sizeof (struct command_line));
|
|
make_cleanup (xfree, default_collect_action);
|
|
default_collect_action->next = actions;
|
|
default_collect_action->line = line;
|
|
actions = default_collect_action;
|
|
}
|
|
encode_actions_1 (actions, t, tloc, frame_reg, frame_offset,
|
|
&tracepoint_list, &stepping_list);
|
|
|
|
memrange_sortmerge (&tracepoint_list);
|
|
memrange_sortmerge (&stepping_list);
|
|
|
|
*tdp_actions = stringify_collection_list (&tracepoint_list,
|
|
tdp_buff);
|
|
*stepping_actions = stringify_collection_list (&stepping_list,
|
|
step_buff);
|
|
|
|
do_cleanups (back_to);
|
|
}
|
|
|
|
static void
|
|
add_aexpr (struct collection_list *collect, struct agent_expr *aexpr)
|
|
{
|
|
if (collect->next_aexpr_elt >= collect->aexpr_listsize)
|
|
{
|
|
collect->aexpr_list =
|
|
xrealloc (collect->aexpr_list,
|
|
2 * collect->aexpr_listsize * sizeof (struct agent_expr *));
|
|
collect->aexpr_listsize *= 2;
|
|
}
|
|
collect->aexpr_list[collect->next_aexpr_elt] = aexpr;
|
|
collect->next_aexpr_elt++;
|
|
}
|
|
|
|
|
|
void
|
|
start_tracing (void)
|
|
{
|
|
char buf[2048];
|
|
VEC(breakpoint_p) *tp_vec = NULL;
|
|
int ix;
|
|
struct breakpoint *t;
|
|
struct trace_state_variable *tsv;
|
|
int any_enabled = 0;
|
|
|
|
tp_vec = all_tracepoints ();
|
|
|
|
/* No point in tracing without any tracepoints... */
|
|
if (VEC_length (breakpoint_p, tp_vec) == 0)
|
|
{
|
|
VEC_free (breakpoint_p, tp_vec);
|
|
error (_("No tracepoints defined, not starting trace"));
|
|
}
|
|
|
|
for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
|
|
{
|
|
if (t->enable_state == bp_enabled)
|
|
{
|
|
any_enabled = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* No point in tracing with only disabled tracepoints. */
|
|
if (!any_enabled)
|
|
{
|
|
VEC_free (breakpoint_p, tp_vec);
|
|
error (_("No tracepoints enabled, not starting trace"));
|
|
}
|
|
|
|
target_trace_init ();
|
|
|
|
for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
|
|
{
|
|
t->number_on_target = 0;
|
|
target_download_tracepoint (t);
|
|
t->number_on_target = t->number;
|
|
}
|
|
VEC_free (breakpoint_p, tp_vec);
|
|
|
|
/* Send down all the trace state variables too. */
|
|
for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
|
|
{
|
|
target_download_trace_state_variable (tsv);
|
|
}
|
|
|
|
/* Tell target to treat text-like sections as transparent. */
|
|
target_trace_set_readonly_regions ();
|
|
/* Set some mode flags. */
|
|
target_set_disconnected_tracing (disconnected_tracing);
|
|
target_set_circular_trace_buffer (circular_trace_buffer);
|
|
|
|
/* Now insert traps and begin collecting data. */
|
|
target_trace_start ();
|
|
|
|
/* Reset our local state. */
|
|
set_traceframe_num (-1);
|
|
set_tracepoint_num (-1);
|
|
set_traceframe_context (NULL);
|
|
current_trace_status()->running = 1;
|
|
}
|
|
|
|
/* tstart command:
|
|
|
|
Tell target to clear any previous trace experiment.
|
|
Walk the list of tracepoints, and send them (and their actions)
|
|
to the target. If no errors,
|
|
Tell target to start a new trace experiment. */
|
|
|
|
static void
|
|
trace_start_command (char *args, int from_tty)
|
|
{
|
|
dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
|
|
|
|
if (current_trace_status ()->running)
|
|
{
|
|
if (from_tty
|
|
&& !query (_("A trace is running already. Start a new run? ")))
|
|
error (_("New trace run not started."));
|
|
}
|
|
|
|
start_tracing ();
|
|
}
|
|
|
|
/* tstop command */
|
|
static void
|
|
trace_stop_command (char *args, int from_tty)
|
|
{
|
|
if (!current_trace_status ()->running)
|
|
error (_("Trace is not running."));
|
|
|
|
stop_tracing ();
|
|
}
|
|
|
|
void
|
|
stop_tracing (void)
|
|
{
|
|
target_trace_stop ();
|
|
/* should change in response to reply? */
|
|
current_trace_status ()->running = 0;
|
|
}
|
|
|
|
/* tstatus command */
|
|
static void
|
|
trace_status_command (char *args, int from_tty)
|
|
{
|
|
struct trace_status *ts = current_trace_status ();
|
|
int status;
|
|
|
|
status = target_get_trace_status (ts);
|
|
|
|
if (status == -1)
|
|
{
|
|
if (ts->from_file)
|
|
printf_filtered (_("Using a trace file.\n"));
|
|
else
|
|
{
|
|
printf_filtered (_("Trace can not be run on this target.\n"));
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!ts->running_known)
|
|
{
|
|
printf_filtered (_("Run/stop status is unknown.\n"));
|
|
}
|
|
else if (ts->running)
|
|
{
|
|
printf_filtered (_("Trace is running on the target.\n"));
|
|
}
|
|
else
|
|
{
|
|
switch (ts->stop_reason)
|
|
{
|
|
case trace_never_run:
|
|
printf_filtered (_("No trace has been run on the target.\n"));
|
|
break;
|
|
case tstop_command:
|
|
printf_filtered (_("Trace stopped by a tstop command.\n"));
|
|
break;
|
|
case trace_buffer_full:
|
|
printf_filtered (_("Trace stopped because the buffer was full.\n"));
|
|
break;
|
|
case trace_disconnected:
|
|
printf_filtered (_("Trace stopped because of disconnection.\n"));
|
|
break;
|
|
case tracepoint_passcount:
|
|
printf_filtered (_("Trace stopped by tracepoint %d.\n"),
|
|
ts->stopping_tracepoint);
|
|
break;
|
|
case tracepoint_error:
|
|
if (ts->stopping_tracepoint)
|
|
printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
|
|
ts->error_desc, ts->stopping_tracepoint);
|
|
else
|
|
printf_filtered (_("Trace stopped by an error (%s).\n"),
|
|
ts->error_desc);
|
|
break;
|
|
case trace_stop_reason_unknown:
|
|
printf_filtered (_("Trace stopped for an unknown reason.\n"));
|
|
break;
|
|
default:
|
|
printf_filtered (_("Trace stopped for some other reason (%d).\n"),
|
|
ts->stop_reason);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ts->traceframes_created >= 0
|
|
&& ts->traceframe_count != ts->traceframes_created)
|
|
{
|
|
printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
|
|
ts->traceframe_count, ts->traceframes_created);
|
|
}
|
|
else if (ts->traceframe_count >= 0)
|
|
{
|
|
printf_filtered (_("Collected %d trace frames.\n"),
|
|
ts->traceframe_count);
|
|
}
|
|
|
|
if (ts->buffer_free >= 0)
|
|
{
|
|
if (ts->buffer_size >= 0)
|
|
{
|
|
printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
|
|
ts->buffer_free, ts->buffer_size);
|
|
if (ts->buffer_size > 0)
|
|
printf_filtered (_(" (%d%% full)"),
|
|
((int) ((((long long) (ts->buffer_size
|
|
- ts->buffer_free)) * 100)
|
|
/ ts->buffer_size)));
|
|
printf_filtered (_(".\n"));
|
|
}
|
|
else
|
|
printf_filtered (_("Trace buffer has %d bytes free.\n"),
|
|
ts->buffer_free);
|
|
}
|
|
|
|
if (ts->disconnected_tracing)
|
|
printf_filtered (_("Trace will continue if GDB disconnects.\n"));
|
|
else
|
|
printf_filtered (_("Trace will stop if GDB disconnects.\n"));
|
|
|
|
if (ts->circular_buffer)
|
|
printf_filtered (_("Trace buffer is circular.\n"));
|
|
|
|
/* Now report on what we're doing with tfind. */
|
|
if (traceframe_number >= 0)
|
|
printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
|
|
traceframe_number, tracepoint_number);
|
|
else
|
|
printf_filtered (_("Not looking at any trace frame.\n"));
|
|
}
|
|
|
|
/* Report the trace status to uiout, in a way suitable for MI, and not
|
|
suitable for CLI. If ON_STOP is true, suppress a few fields that
|
|
are not meaningful in the -trace-stop response.
|
|
|
|
The implementation is essentially parallel to trace_status_command, but
|
|
merging them will result in unreadable code. */
|
|
void
|
|
trace_status_mi (int on_stop)
|
|
{
|
|
struct trace_status *ts = current_trace_status ();
|
|
int status;
|
|
char *string_status;
|
|
|
|
status = target_get_trace_status (ts);
|
|
|
|
if (status == -1 && !ts->from_file)
|
|
{
|
|
ui_out_field_string (uiout, "supported", "0");
|
|
return;
|
|
}
|
|
|
|
if (ts->from_file)
|
|
ui_out_field_string (uiout, "supported", "file");
|
|
else if (!on_stop)
|
|
ui_out_field_string (uiout, "supported", "1");
|
|
|
|
gdb_assert (ts->running_known);
|
|
|
|
if (ts->running)
|
|
{
|
|
ui_out_field_string (uiout, "running", "1");
|
|
|
|
/* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
|
|
Given that the frontend gets the status either on -trace-stop, or from
|
|
-trace-status after re-connection, it does not seem like this
|
|
information is necessary for anything. It is not necessary for either
|
|
figuring the vital state of the target nor for navigation of trace
|
|
frames. If the frontend wants to show the current state is some
|
|
configure dialog, it can request the value when such dialog is
|
|
invoked by the user. */
|
|
}
|
|
else
|
|
{
|
|
char *stop_reason = NULL;
|
|
int stopping_tracepoint = -1;
|
|
|
|
if (!on_stop)
|
|
ui_out_field_string (uiout, "running", "0");
|
|
|
|
if (ts->stop_reason != trace_stop_reason_unknown)
|
|
{
|
|
switch (ts->stop_reason)
|
|
{
|
|
case tstop_command:
|
|
stop_reason = "request";
|
|
break;
|
|
case trace_buffer_full:
|
|
stop_reason = "overflow";
|
|
break;
|
|
case trace_disconnected:
|
|
stop_reason = "disconnection";
|
|
break;
|
|
case tracepoint_passcount:
|
|
stop_reason = "passcount";
|
|
stopping_tracepoint = ts->stopping_tracepoint;
|
|
break;
|
|
case tracepoint_error:
|
|
stop_reason = "error";
|
|
stopping_tracepoint = ts->stopping_tracepoint;
|
|
break;
|
|
}
|
|
|
|
if (stop_reason)
|
|
{
|
|
ui_out_field_string (uiout, "stop-reason", stop_reason);
|
|
if (stopping_tracepoint != -1)
|
|
ui_out_field_int (uiout, "stopping-tracepoint",
|
|
stopping_tracepoint);
|
|
if (ts->stop_reason == tracepoint_error)
|
|
ui_out_field_string (uiout, "error-description",
|
|
ts->error_desc);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ts->traceframe_count != -1)
|
|
ui_out_field_int (uiout, "frames", ts->traceframe_count);
|
|
if (ts->traceframes_created != -1)
|
|
ui_out_field_int (uiout, "frames-created", ts->traceframes_created);
|
|
if (ts->buffer_size != -1)
|
|
ui_out_field_int (uiout, "buffer-size", ts->buffer_size);
|
|
if (ts->buffer_free != -1)
|
|
ui_out_field_int (uiout, "buffer-free", ts->buffer_free);
|
|
|
|
ui_out_field_int (uiout, "disconnected", ts->disconnected_tracing);
|
|
ui_out_field_int (uiout, "circular", ts->circular_buffer);
|
|
}
|
|
|
|
/* This function handles the details of what to do about an ongoing
|
|
tracing run if the user has asked to detach or otherwise disconnect
|
|
from the target. */
|
|
void
|
|
disconnect_tracing (int from_tty)
|
|
{
|
|
/* It can happen that the target that was tracing went away on its
|
|
own, and we didn't notice. Get a status update, and if the
|
|
current target doesn't even do tracing, then assume it's not
|
|
running anymore. */
|
|
if (target_get_trace_status (current_trace_status ()) < 0)
|
|
current_trace_status ()->running = 0;
|
|
|
|
/* If running interactively, give the user the option to cancel and
|
|
then decide what to do differently with the run. Scripts are
|
|
just going to disconnect and let the target deal with it,
|
|
according to how it's been instructed previously via
|
|
disconnected-tracing. */
|
|
if (current_trace_status ()->running && from_tty)
|
|
{
|
|
if (current_trace_status ()->disconnected_tracing)
|
|
{
|
|
if (!query (_("Trace is running and will continue after detach; detach anyway? ")))
|
|
error (_("Not confirmed."));
|
|
}
|
|
else
|
|
{
|
|
if (!query (_("Trace is running but will stop on detach; detach anyway? ")))
|
|
error (_("Not confirmed."));
|
|
}
|
|
}
|
|
|
|
/* Also we want to be out of tfind mode, otherwise things can get
|
|
confusing upon reconnection. Just use these calls instead of
|
|
full tfind_1 behavior because we're in the middle of detaching,
|
|
and there's no point to updating current stack frame etc. */
|
|
set_traceframe_number (-1);
|
|
set_traceframe_context (NULL);
|
|
}
|
|
|
|
/* Worker function for the various flavors of the tfind command. */
|
|
void
|
|
tfind_1 (enum trace_find_type type, int num,
|
|
ULONGEST addr1, ULONGEST addr2,
|
|
int from_tty)
|
|
{
|
|
int target_frameno = -1, target_tracept = -1;
|
|
struct frame_id old_frame_id;
|
|
char *reply;
|
|
struct breakpoint *tp;
|
|
|
|
old_frame_id = get_frame_id (get_current_frame ());
|
|
|
|
target_frameno = target_trace_find (type, num, addr1, addr2,
|
|
&target_tracept);
|
|
|
|
if (type == tfind_number
|
|
&& num == -1
|
|
&& target_frameno == -1)
|
|
{
|
|
/* We told the target to get out of tfind mode, and it did. */
|
|
}
|
|
else if (target_frameno == -1)
|
|
{
|
|
/* A request for a non-existant trace frame has failed.
|
|
Our response will be different, depending on FROM_TTY:
|
|
|
|
If FROM_TTY is true, meaning that this command was
|
|
typed interactively by the user, then give an error
|
|
and DO NOT change the state of traceframe_number etc.
|
|
|
|
However if FROM_TTY is false, meaning that we're either
|
|
in a script, a loop, or a user-defined command, then
|
|
DON'T give an error, but DO change the state of
|
|
traceframe_number etc. to invalid.
|
|
|
|
The rationalle is that if you typed the command, you
|
|
might just have committed a typo or something, and you'd
|
|
like to NOT lose your current debugging state. However
|
|
if you're in a user-defined command or especially in a
|
|
loop, then you need a way to detect that the command
|
|
failed WITHOUT aborting. This allows you to write
|
|
scripts that search thru the trace buffer until the end,
|
|
and then continue on to do something else. */
|
|
|
|
if (from_tty)
|
|
error (_("Target failed to find requested trace frame."));
|
|
else
|
|
{
|
|
if (info_verbose)
|
|
printf_filtered ("End of trace buffer.\n");
|
|
#if 0 /* dubious now? */
|
|
/* The following will not recurse, since it's
|
|
special-cased. */
|
|
trace_find_command ("-1", from_tty);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
tp = get_tracepoint_by_number_on_target (target_tracept);
|
|
|
|
reinit_frame_cache ();
|
|
registers_changed ();
|
|
target_dcache_invalidate ();
|
|
set_traceframe_num (target_frameno);
|
|
set_tracepoint_num (tp ? tp->number : target_tracept);
|
|
if (target_frameno == -1)
|
|
set_traceframe_context (NULL);
|
|
else
|
|
set_traceframe_context (get_current_frame ());
|
|
|
|
if (traceframe_number >= 0)
|
|
{
|
|
/* Use different branches for MI and CLI to make CLI messages
|
|
i18n-eable. */
|
|
if (ui_out_is_mi_like_p (uiout))
|
|
{
|
|
ui_out_field_string (uiout, "found", "1");
|
|
ui_out_field_int (uiout, "tracepoint", tracepoint_number);
|
|
ui_out_field_int (uiout, "traceframe", traceframe_number);
|
|
}
|
|
else
|
|
{
|
|
printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
|
|
traceframe_number, tracepoint_number);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (ui_out_is_mi_like_p (uiout))
|
|
ui_out_field_string (uiout, "found", "0");
|
|
else
|
|
printf_unfiltered (_("No trace frame found"));
|
|
}
|
|
|
|
/* If we're in nonstop mode and getting out of looking at trace
|
|
frames, there won't be any current frame to go back to and
|
|
display. */
|
|
if (from_tty
|
|
&& (has_stack_frames () || traceframe_number >= 0))
|
|
{
|
|
enum print_what print_what;
|
|
|
|
/* NOTE: in immitation of the step command, try to determine
|
|
whether we have made a transition from one function to
|
|
another. If so, we'll print the "stack frame" (ie. the new
|
|
function and it's arguments) -- otherwise we'll just show the
|
|
new source line. */
|
|
|
|
if (frame_id_eq (old_frame_id,
|
|
get_frame_id (get_current_frame ())))
|
|
print_what = SRC_LINE;
|
|
else
|
|
print_what = SRC_AND_LOC;
|
|
|
|
print_stack_frame (get_selected_frame (NULL), 1, print_what);
|
|
do_displays ();
|
|
}
|
|
}
|
|
|
|
/* trace_find_command takes a trace frame number n,
|
|
sends "QTFrame:<n>" to the target,
|
|
and accepts a reply that may contain several optional pieces
|
|
of information: a frame number, a tracepoint number, and an
|
|
indication of whether this is a trap frame or a stepping frame.
|
|
|
|
The minimal response is just "OK" (which indicates that the
|
|
target does not give us a frame number or a tracepoint number).
|
|
Instead of that, the target may send us a string containing
|
|
any combination of:
|
|
F<hexnum> (gives the selected frame number)
|
|
T<hexnum> (gives the selected tracepoint number)
|
|
*/
|
|
|
|
/* tfind command */
|
|
static void
|
|
trace_find_command (char *args, int from_tty)
|
|
{ /* this should only be called with a numeric argument */
|
|
int frameno = -1;
|
|
|
|
if (current_trace_status ()->running && !current_trace_status ()->from_file)
|
|
error ("May not look at trace frames while trace is running.");
|
|
|
|
if (args == 0 || *args == 0)
|
|
{ /* TFIND with no args means find NEXT trace frame. */
|
|
if (traceframe_number == -1)
|
|
frameno = 0; /* "next" is first one */
|
|
else
|
|
frameno = traceframe_number + 1;
|
|
}
|
|
else if (0 == strcmp (args, "-"))
|
|
{
|
|
if (traceframe_number == -1)
|
|
error (_("not debugging trace buffer"));
|
|
else if (from_tty && traceframe_number == 0)
|
|
error (_("already at start of trace buffer"));
|
|
|
|
frameno = traceframe_number - 1;
|
|
}
|
|
/* A hack to work around eval's need for fp to have been collected. */
|
|
else if (0 == strcmp (args, "-1"))
|
|
frameno = -1;
|
|
else
|
|
frameno = parse_and_eval_long (args);
|
|
|
|
if (frameno < -1)
|
|
error (_("invalid input (%d is less than zero)"), frameno);
|
|
|
|
tfind_1 (tfind_number, frameno, 0, 0, from_tty);
|
|
}
|
|
|
|
/* tfind end */
|
|
static void
|
|
trace_find_end_command (char *args, int from_tty)
|
|
{
|
|
trace_find_command ("-1", from_tty);
|
|
}
|
|
|
|
/* tfind none */
|
|
static void
|
|
trace_find_none_command (char *args, int from_tty)
|
|
{
|
|
trace_find_command ("-1", from_tty);
|
|
}
|
|
|
|
/* tfind start */
|
|
static void
|
|
trace_find_start_command (char *args, int from_tty)
|
|
{
|
|
trace_find_command ("0", from_tty);
|
|
}
|
|
|
|
/* tfind pc command */
|
|
static void
|
|
trace_find_pc_command (char *args, int from_tty)
|
|
{
|
|
CORE_ADDR pc;
|
|
char tmp[40];
|
|
|
|
if (current_trace_status ()->running && !current_trace_status ()->from_file)
|
|
error ("May not look at trace frames while trace is running.");
|
|
|
|
if (args == 0 || *args == 0)
|
|
pc = regcache_read_pc (get_current_regcache ());
|
|
else
|
|
pc = parse_and_eval_address (args);
|
|
|
|
tfind_1 (tfind_pc, 0, pc, 0, from_tty);
|
|
}
|
|
|
|
/* tfind tracepoint command */
|
|
static void
|
|
trace_find_tracepoint_command (char *args, int from_tty)
|
|
{
|
|
int tdp;
|
|
struct breakpoint *tp;
|
|
|
|
if (current_trace_status ()->running && !current_trace_status ()->from_file)
|
|
error ("May not look at trace frames while trace is running.");
|
|
|
|
if (args == 0 || *args == 0)
|
|
{
|
|
if (tracepoint_number == -1)
|
|
error (_("No current tracepoint -- please supply an argument."));
|
|
else
|
|
tdp = tracepoint_number; /* default is current TDP */
|
|
}
|
|
else
|
|
tdp = parse_and_eval_long (args);
|
|
|
|
/* If we have the tracepoint on hand, use the number that the
|
|
target knows about (which may be different if we disconnected
|
|
and reconnected). */
|
|
tp = get_tracepoint (tdp);
|
|
if (tp)
|
|
tdp = tp->number_on_target;
|
|
|
|
tfind_1 (tfind_tp, tdp, 0, 0, from_tty);
|
|
}
|
|
|
|
/* TFIND LINE command:
|
|
|
|
This command will take a sourceline for argument, just like BREAK
|
|
or TRACE (ie. anything that "decode_line_1" can handle).
|
|
|
|
With no argument, this command will find the next trace frame
|
|
corresponding to a source line OTHER THAN THE CURRENT ONE. */
|
|
|
|
static void
|
|
trace_find_line_command (char *args, int from_tty)
|
|
{
|
|
static CORE_ADDR start_pc, end_pc;
|
|
struct symtabs_and_lines sals;
|
|
struct symtab_and_line sal;
|
|
struct cleanup *old_chain;
|
|
char startpc_str[40], endpc_str[40];
|
|
|
|
if (current_trace_status ()->running && !current_trace_status ()->from_file)
|
|
error ("May not look at trace frames while trace is running.");
|
|
|
|
if (args == 0 || *args == 0)
|
|
{
|
|
sal = find_pc_line (get_frame_pc (get_current_frame ()), 0);
|
|
sals.nelts = 1;
|
|
sals.sals = (struct symtab_and_line *)
|
|
xmalloc (sizeof (struct symtab_and_line));
|
|
sals.sals[0] = sal;
|
|
}
|
|
else
|
|
{
|
|
sals = decode_line_spec (args, 1);
|
|
sal = sals.sals[0];
|
|
}
|
|
|
|
old_chain = make_cleanup (xfree, sals.sals);
|
|
if (sal.symtab == 0)
|
|
error (_("No line number information available."));
|
|
|
|
if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc))
|
|
{
|
|
if (start_pc == end_pc)
|
|
{
|
|
printf_filtered ("Line %d of \"%s\"",
|
|
sal.line, sal.symtab->filename);
|
|
wrap_here (" ");
|
|
printf_filtered (" is at address ");
|
|
print_address (get_current_arch (), start_pc, gdb_stdout);
|
|
wrap_here (" ");
|
|
printf_filtered (" but contains no code.\n");
|
|
sal = find_pc_line (start_pc, 0);
|
|
if (sal.line > 0
|
|
&& find_line_pc_range (sal, &start_pc, &end_pc)
|
|
&& start_pc != end_pc)
|
|
printf_filtered ("Attempting to find line %d instead.\n",
|
|
sal.line);
|
|
else
|
|
error (_("Cannot find a good line."));
|
|
}
|
|
}
|
|
else
|
|
/* Is there any case in which we get here, and have an address
|
|
which the user would want to see? If we have debugging
|
|
symbols and no line numbers? */
|
|
error (_("Line number %d is out of range for \"%s\"."),
|
|
sal.line, sal.symtab->filename);
|
|
|
|
/* Find within range of stated line. */
|
|
if (args && *args)
|
|
tfind_1 (tfind_range, 0, start_pc, end_pc - 1, from_tty);
|
|
else
|
|
tfind_1 (tfind_outside, 0, start_pc, end_pc - 1, from_tty);
|
|
do_cleanups (old_chain);
|
|
}
|
|
|
|
/* tfind range command */
|
|
static void
|
|
trace_find_range_command (char *args, int from_tty)
|
|
{
|
|
static CORE_ADDR start, stop;
|
|
char start_str[40], stop_str[40];
|
|
char *tmp;
|
|
|
|
if (current_trace_status ()->running && !current_trace_status ()->from_file)
|
|
error ("May not look at trace frames while trace is running.");
|
|
|
|
if (args == 0 || *args == 0)
|
|
{ /* XXX FIXME: what should default behavior be? */
|
|
printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
|
|
return;
|
|
}
|
|
|
|
if (0 != (tmp = strchr (args, ',')))
|
|
{
|
|
*tmp++ = '\0'; /* terminate start address */
|
|
while (isspace ((int) *tmp))
|
|
tmp++;
|
|
start = parse_and_eval_address (args);
|
|
stop = parse_and_eval_address (tmp);
|
|
}
|
|
else
|
|
{ /* no explicit end address? */
|
|
start = parse_and_eval_address (args);
|
|
stop = start + 1; /* ??? */
|
|
}
|
|
|
|
tfind_1 (tfind_range, 0, start, stop, from_tty);
|
|
}
|
|
|
|
/* tfind outside command */
|
|
static void
|
|
trace_find_outside_command (char *args, int from_tty)
|
|
{
|
|
CORE_ADDR start, stop;
|
|
char start_str[40], stop_str[40];
|
|
char *tmp;
|
|
|
|
if (current_trace_status ()->running && !current_trace_status ()->from_file)
|
|
error ("May not look at trace frames while trace is running.");
|
|
|
|
if (args == 0 || *args == 0)
|
|
{ /* XXX FIXME: what should default behavior be? */
|
|
printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
|
|
return;
|
|
}
|
|
|
|
if (0 != (tmp = strchr (args, ',')))
|
|
{
|
|
*tmp++ = '\0'; /* terminate start address */
|
|
while (isspace ((int) *tmp))
|
|
tmp++;
|
|
start = parse_and_eval_address (args);
|
|
stop = parse_and_eval_address (tmp);
|
|
}
|
|
else
|
|
{ /* no explicit end address? */
|
|
start = parse_and_eval_address (args);
|
|
stop = start + 1; /* ??? */
|
|
}
|
|
|
|
tfind_1 (tfind_outside, 0, start, stop, from_tty);
|
|
}
|
|
|
|
/* info scope command: list the locals for a scope. */
|
|
static void
|
|
scope_info (char *args, int from_tty)
|
|
{
|
|
struct symtabs_and_lines sals;
|
|
struct symbol *sym;
|
|
struct minimal_symbol *msym;
|
|
struct block *block;
|
|
char **canonical, *symname, *save_args = args;
|
|
struct dict_iterator iter;
|
|
int j, count = 0;
|
|
struct gdbarch *gdbarch;
|
|
int regno;
|
|
|
|
if (args == 0 || *args == 0)
|
|
error (_("requires an argument (function, line or *addr) to define a scope"));
|
|
|
|
sals = decode_line_1 (&args, 1, NULL, 0, &canonical, NULL);
|
|
if (sals.nelts == 0)
|
|
return; /* presumably decode_line_1 has already warned */
|
|
|
|
/* Resolve line numbers to PC */
|
|
resolve_sal_pc (&sals.sals[0]);
|
|
block = block_for_pc (sals.sals[0].pc);
|
|
|
|
while (block != 0)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
ALL_BLOCK_SYMBOLS (block, iter, sym)
|
|
{
|
|
QUIT; /* allow user to bail out with ^C */
|
|
if (count == 0)
|
|
printf_filtered ("Scope for %s:\n", save_args);
|
|
count++;
|
|
|
|
symname = SYMBOL_PRINT_NAME (sym);
|
|
if (symname == NULL || *symname == '\0')
|
|
continue; /* probably botched, certainly useless */
|
|
|
|
gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile);
|
|
|
|
printf_filtered ("Symbol %s is ", symname);
|
|
switch (SYMBOL_CLASS (sym))
|
|
{
|
|
default:
|
|
case LOC_UNDEF: /* messed up symbol? */
|
|
printf_filtered ("a bogus symbol, class %d.\n",
|
|
SYMBOL_CLASS (sym));
|
|
count--; /* don't count this one */
|
|
continue;
|
|
case LOC_CONST:
|
|
printf_filtered ("a constant with value %ld (0x%lx)",
|
|
SYMBOL_VALUE (sym), SYMBOL_VALUE (sym));
|
|
break;
|
|
case LOC_CONST_BYTES:
|
|
printf_filtered ("constant bytes: ");
|
|
if (SYMBOL_TYPE (sym))
|
|
for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++)
|
|
fprintf_filtered (gdb_stdout, " %02x",
|
|
(unsigned) SYMBOL_VALUE_BYTES (sym)[j]);
|
|
break;
|
|
case LOC_STATIC:
|
|
printf_filtered ("in static storage at address ");
|
|
printf_filtered ("%s", paddress (gdbarch,
|
|
SYMBOL_VALUE_ADDRESS (sym)));
|
|
break;
|
|
case LOC_REGISTER:
|
|
/* GDBARCH is the architecture associated with the objfile
|
|
the symbol is defined in; the target architecture may be
|
|
different, and may provide additional registers. However,
|
|
we do not know the target architecture at this point.
|
|
We assume the objfile architecture will contain all the
|
|
standard registers that occur in debug info in that
|
|
objfile. */
|
|
regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
|
|
|
|
if (SYMBOL_IS_ARGUMENT (sym))
|
|
printf_filtered ("an argument in register $%s",
|
|
gdbarch_register_name (gdbarch, regno));
|
|
else
|
|
printf_filtered ("a local variable in register $%s",
|
|
gdbarch_register_name (gdbarch, regno));
|
|
break;
|
|
case LOC_ARG:
|
|
printf_filtered ("an argument at stack/frame offset %ld",
|
|
SYMBOL_VALUE (sym));
|
|
break;
|
|
case LOC_LOCAL:
|
|
printf_filtered ("a local variable at frame offset %ld",
|
|
SYMBOL_VALUE (sym));
|
|
break;
|
|
case LOC_REF_ARG:
|
|
printf_filtered ("a reference argument at offset %ld",
|
|
SYMBOL_VALUE (sym));
|
|
break;
|
|
case LOC_REGPARM_ADDR:
|
|
/* Note comment at LOC_REGISTER. */
|
|
regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
|
|
printf_filtered ("the address of an argument, in register $%s",
|
|
gdbarch_register_name (gdbarch, regno));
|
|
break;
|
|
case LOC_TYPEDEF:
|
|
printf_filtered ("a typedef.\n");
|
|
continue;
|
|
case LOC_LABEL:
|
|
printf_filtered ("a label at address ");
|
|
printf_filtered ("%s", paddress (gdbarch,
|
|
SYMBOL_VALUE_ADDRESS (sym)));
|
|
break;
|
|
case LOC_BLOCK:
|
|
printf_filtered ("a function at address ");
|
|
printf_filtered ("%s",
|
|
paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (sym))));
|
|
break;
|
|
case LOC_UNRESOLVED:
|
|
msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym),
|
|
NULL, NULL);
|
|
if (msym == NULL)
|
|
printf_filtered ("Unresolved Static");
|
|
else
|
|
{
|
|
printf_filtered ("static storage at address ");
|
|
printf_filtered ("%s",
|
|
paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msym)));
|
|
}
|
|
break;
|
|
case LOC_OPTIMIZED_OUT:
|
|
printf_filtered ("optimized out.\n");
|
|
continue;
|
|
case LOC_COMPUTED:
|
|
SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, gdb_stdout);
|
|
break;
|
|
}
|
|
if (SYMBOL_TYPE (sym))
|
|
printf_filtered (", length %d.\n",
|
|
TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))));
|
|
}
|
|
if (BLOCK_FUNCTION (block))
|
|
break;
|
|
else
|
|
block = BLOCK_SUPERBLOCK (block);
|
|
}
|
|
if (count <= 0)
|
|
printf_filtered ("Scope for %s contains no locals or arguments.\n",
|
|
save_args);
|
|
}
|
|
|
|
/* worker function (cleanup) */
|
|
static void
|
|
replace_comma (void *data)
|
|
{
|
|
char *comma = data;
|
|
*comma = ',';
|
|
}
|
|
|
|
|
|
/* Helper for trace_dump_command. Dump the action list starting at
|
|
ACTION. STEPPING_ACTIONS is true if we're iterating over the
|
|
actions of the body of a while-stepping action. STEPPING_FRAME is
|
|
set if the current traceframe was determined to be a while-stepping
|
|
traceframe. */
|
|
|
|
static void
|
|
trace_dump_actions (struct command_line *action,
|
|
int stepping_actions, int stepping_frame,
|
|
int from_tty)
|
|
{
|
|
char *action_exp, *next_comma;
|
|
|
|
for (; action != NULL; action = action->next)
|
|
{
|
|
struct cmd_list_element *cmd;
|
|
|
|
QUIT; /* allow user to bail out with ^C */
|
|
action_exp = action->line;
|
|
while (isspace ((int) *action_exp))
|
|
action_exp++;
|
|
|
|
/* The collection actions to be done while stepping are
|
|
bracketed by the commands "while-stepping" and "end". */
|
|
|
|
if (*action_exp == '#') /* comment line */
|
|
continue;
|
|
|
|
cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
|
|
if (cmd == 0)
|
|
error (_("Bad action list item: %s"), action_exp);
|
|
|
|
if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < action->body_count; ++i)
|
|
trace_dump_actions (action->body_list[i],
|
|
1, stepping_frame, from_tty);
|
|
}
|
|
else if (cmd_cfunc_eq (cmd, collect_pseudocommand))
|
|
{
|
|
/* Display the collected data.
|
|
For the trap frame, display only what was collected at
|
|
the trap. Likewise for stepping frames, display only
|
|
what was collected while stepping. This means that the
|
|
two boolean variables, STEPPING_FRAME and
|
|
STEPPING_ACTIONS should be equal. */
|
|
if (stepping_frame == stepping_actions)
|
|
{
|
|
do
|
|
{ /* repeat over a comma-separated list */
|
|
QUIT; /* allow user to bail out with ^C */
|
|
if (*action_exp == ',')
|
|
action_exp++;
|
|
while (isspace ((int) *action_exp))
|
|
action_exp++;
|
|
|
|
next_comma = strchr (action_exp, ',');
|
|
|
|
if (0 == strncasecmp (action_exp, "$reg", 4))
|
|
registers_info (NULL, from_tty);
|
|
else if (0 == strncasecmp (action_exp, "$loc", 4))
|
|
locals_info (NULL, from_tty);
|
|
else if (0 == strncasecmp (action_exp, "$arg", 4))
|
|
args_info (NULL, from_tty);
|
|
else
|
|
{ /* variable */
|
|
if (next_comma)
|
|
{
|
|
make_cleanup (replace_comma, next_comma);
|
|
*next_comma = '\0';
|
|
}
|
|
printf_filtered ("%s = ", action_exp);
|
|
output_command (action_exp, from_tty);
|
|
printf_filtered ("\n");
|
|
}
|
|
if (next_comma)
|
|
*next_comma = ',';
|
|
action_exp = next_comma;
|
|
}
|
|
while (action_exp && *action_exp == ',');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The tdump command. */
|
|
|
|
static void
|
|
trace_dump_command (char *args, int from_tty)
|
|
{
|
|
struct regcache *regcache;
|
|
struct breakpoint *t;
|
|
int stepping_frame = 0;
|
|
struct bp_location *loc;
|
|
char *line, *default_collect_line = NULL;
|
|
struct command_line *actions, *default_collect_action = NULL;
|
|
struct cleanup *old_chain = NULL;
|
|
|
|
if (tracepoint_number == -1)
|
|
{
|
|
warning (_("No current trace frame."));
|
|
return;
|
|
}
|
|
|
|
t = get_tracepoint (tracepoint_number);
|
|
|
|
if (t == NULL)
|
|
error (_("No known tracepoint matches 'current' tracepoint #%d."),
|
|
tracepoint_number);
|
|
|
|
printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
|
|
tracepoint_number, traceframe_number);
|
|
|
|
/* The current frame is a trap frame if the frame PC is equal
|
|
to the tracepoint PC. If not, then the current frame was
|
|
collected during single-stepping. */
|
|
|
|
regcache = get_current_regcache ();
|
|
|
|
/* If the traceframe's address matches any of the tracepoint's
|
|
locations, assume it is a direct hit rather than a while-stepping
|
|
frame. (FIXME this is not reliable, should record each frame's
|
|
type.) */
|
|
stepping_frame = 1;
|
|
for (loc = t->loc; loc; loc = loc->next)
|
|
if (loc->address == regcache_read_pc (regcache))
|
|
stepping_frame = 0;
|
|
|
|
actions = breakpoint_commands (t);
|
|
|
|
/* If there is a default-collect list, make up a collect command,
|
|
prepend to the tracepoint's commands, and pass the whole mess to
|
|
the trace dump scanner. We need to validate because
|
|
default-collect might have been junked since the trace run. */
|
|
if (*default_collect)
|
|
{
|
|
default_collect_line = xstrprintf ("collect %s", default_collect);
|
|
old_chain = make_cleanup (xfree, default_collect_line);
|
|
line = default_collect_line;
|
|
validate_actionline (&line, t);
|
|
default_collect_action = xmalloc (sizeof (struct command_line));
|
|
make_cleanup (xfree, default_collect_action);
|
|
default_collect_action->next = actions;
|
|
default_collect_action->line = line;
|
|
actions = default_collect_action;
|
|
}
|
|
|
|
trace_dump_actions (actions, 0, stepping_frame, from_tty);
|
|
|
|
if (*default_collect)
|
|
do_cleanups (old_chain);
|
|
}
|
|
|
|
/* Encode a piece of a tracepoint's source-level definition in a form
|
|
that is suitable for both protocol and saving in files. */
|
|
/* This version does not do multiple encodes for long strings; it should
|
|
return an offset to the next piece to encode. FIXME */
|
|
|
|
extern int
|
|
encode_source_string (int tpnum, ULONGEST addr,
|
|
char *srctype, char *src, char *buf, int buf_size)
|
|
{
|
|
if (80 + strlen (srctype) > buf_size)
|
|
error (_("Buffer too small for source encoding"));
|
|
sprintf (buf, "%x:%s:%s:%x:%x:",
|
|
tpnum, phex_nz (addr, sizeof (addr)), srctype, 0, (int) strlen (src));
|
|
if (strlen (buf) + strlen (src) * 2 >= buf_size)
|
|
error (_("Source string too long for buffer"));
|
|
bin2hex (src, buf + strlen (buf), 0);
|
|
return -1;
|
|
}
|
|
|
|
extern int trace_regblock_size;
|
|
|
|
/* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
|
|
non-zero, the save is performed on the target, otherwise GDB obtains all
|
|
trace data and saves it locally. */
|
|
|
|
void
|
|
trace_save (const char *filename, int target_does_save)
|
|
{
|
|
struct cleanup *cleanup;
|
|
char *pathname;
|
|
struct trace_status *ts = current_trace_status ();
|
|
int err, status;
|
|
FILE *fp;
|
|
struct uploaded_tp *uploaded_tps = NULL, *utp;
|
|
struct uploaded_tsv *uploaded_tsvs = NULL, *utsv;
|
|
int a;
|
|
char *act;
|
|
LONGEST gotten = 0;
|
|
ULONGEST offset = 0;
|
|
#define MAX_TRACE_UPLOAD 2000
|
|
gdb_byte buf[MAX_TRACE_UPLOAD];
|
|
int written;
|
|
|
|
/* If the target is to save the data to a file on its own, then just
|
|
send the command and be done with it. */
|
|
if (target_does_save)
|
|
{
|
|
err = target_save_trace_data (filename);
|
|
if (err < 0)
|
|
error (_("Target failed to save trace data to '%s'."),
|
|
filename);
|
|
return;
|
|
}
|
|
|
|
/* Get the trace status first before opening the file, so if the
|
|
target is losing, we can get out without touching files. */
|
|
status = target_get_trace_status (ts);
|
|
|
|
pathname = tilde_expand (filename);
|
|
cleanup = make_cleanup (xfree, pathname);
|
|
|
|
fp = fopen (pathname, "w");
|
|
if (!fp)
|
|
error (_("Unable to open file '%s' for saving trace data (%s)"),
|
|
filename, safe_strerror (errno));
|
|
make_cleanup_fclose (fp);
|
|
|
|
/* Write a file header, with a high-bit-set char to indicate a
|
|
binary file, plus a hint as what this file is, and a version
|
|
number in case of future needs. */
|
|
written = fwrite ("\x7fTRACE0\n", 8, 1, fp);
|
|
if (written < 1)
|
|
perror_with_name (pathname);
|
|
|
|
/* Write descriptive info. */
|
|
|
|
/* Write out the size of a register block. */
|
|
fprintf (fp, "R %x\n", trace_regblock_size);
|
|
|
|
/* Write out status of the tracing run (aka "tstatus" info). */
|
|
fprintf (fp, "status %c;%s",
|
|
(ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]);
|
|
if (ts->stop_reason == tracepoint_error)
|
|
{
|
|
char *buf = (char *) alloca (strlen (ts->error_desc) * 2 + 1);
|
|
bin2hex ((gdb_byte *) ts->error_desc, buf, 0);
|
|
fprintf (fp, ":%s", buf);
|
|
}
|
|
fprintf (fp, ":%x", ts->stopping_tracepoint);
|
|
if (ts->traceframe_count >= 0)
|
|
fprintf (fp, ";tframes:%x", ts->traceframe_count);
|
|
if (ts->traceframes_created >= 0)
|
|
fprintf (fp, ";tcreated:%x", ts->traceframes_created);
|
|
if (ts->buffer_free >= 0)
|
|
fprintf (fp, ";tfree:%x", ts->buffer_free);
|
|
if (ts->buffer_size >= 0)
|
|
fprintf (fp, ";tsize:%x", ts->buffer_size);
|
|
if (ts->disconnected_tracing)
|
|
fprintf (fp, ";disconn:%x", ts->disconnected_tracing);
|
|
if (ts->circular_buffer)
|
|
fprintf (fp, ";circular:%x", ts->circular_buffer);
|
|
fprintf (fp, "\n");
|
|
|
|
/* Note that we want to upload tracepoints and save those, rather
|
|
than simply writing out the local ones, because the user may have
|
|
changed tracepoints in GDB in preparation for a future tracing
|
|
run, or maybe just mass-deleted all types of breakpoints as part
|
|
of cleaning up. So as not to contaminate the session, leave the
|
|
data in its uploaded form, don't make into real tracepoints. */
|
|
|
|
/* Get trace state variables first, they may be checked when parsing
|
|
uploaded commands. */
|
|
|
|
target_upload_trace_state_variables (&uploaded_tsvs);
|
|
|
|
for (utsv = uploaded_tsvs; utsv; utsv = utsv->next)
|
|
{
|
|
char *buf = "";
|
|
|
|
if (utsv->name)
|
|
{
|
|
buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1);
|
|
bin2hex ((gdb_byte *) (utsv->name), buf, 0);
|
|
}
|
|
|
|
fprintf (fp, "tsv %x:%s:%x:%s\n",
|
|
utsv->number, phex_nz (utsv->initial_value, 8),
|
|
utsv->builtin, buf);
|
|
|
|
if (utsv->name)
|
|
xfree (buf);
|
|
}
|
|
|
|
free_uploaded_tsvs (&uploaded_tsvs);
|
|
|
|
target_upload_tracepoints (&uploaded_tps);
|
|
|
|
for (utp = uploaded_tps; utp; utp = utp->next)
|
|
{
|
|
fprintf (fp, "tp T%x:%s:%c:%x:%x",
|
|
utp->number, phex_nz (utp->addr, sizeof (utp->addr)),
|
|
(utp->enabled ? 'E' : 'D'), utp->step, utp->pass);
|
|
if (utp->type == bp_fast_tracepoint)
|
|
fprintf (fp, ":F%x", utp->orig_size);
|
|
if (utp->cond)
|
|
fprintf (fp, ":X%x,%s", (unsigned int) strlen (utp->cond) / 2,
|
|
utp->cond);
|
|
fprintf (fp, "\n");
|
|
for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
|
|
fprintf (fp, "tp A%x:%s:%s\n",
|
|
utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
|
|
for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
|
|
fprintf (fp, "tp S%x:%s:%s\n",
|
|
utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
|
|
if (utp->at_string)
|
|
{
|
|
encode_source_string (utp->number, utp->addr,
|
|
"at", utp->at_string, buf, MAX_TRACE_UPLOAD);
|
|
fprintf (fp, "tp Z%s\n", buf);
|
|
}
|
|
if (utp->cond_string)
|
|
{
|
|
encode_source_string (utp->number, utp->addr,
|
|
"cond", utp->cond_string, buf, MAX_TRACE_UPLOAD);
|
|
fprintf (fp, "tp Z%s\n", buf);
|
|
}
|
|
for (a = 0; VEC_iterate (char_ptr, utp->cmd_strings, a, act); ++a)
|
|
{
|
|
encode_source_string (utp->number, utp->addr, "cmd", act,
|
|
buf, MAX_TRACE_UPLOAD);
|
|
fprintf (fp, "tp Z%s\n", buf);
|
|
}
|
|
}
|
|
|
|
free_uploaded_tps (&uploaded_tps);
|
|
|
|
/* Mark the end of the definition section. */
|
|
fprintf (fp, "\n");
|
|
|
|
/* Get and write the trace data proper. We ask for big blocks, in
|
|
the hopes of efficiency, but will take less if the target has
|
|
packet size limitations or some such. */
|
|
while (1)
|
|
{
|
|
gotten = target_get_raw_trace_data (buf, offset, MAX_TRACE_UPLOAD);
|
|
if (gotten < 0)
|
|
error (_("Failure to get requested trace buffer data"));
|
|
/* No more data is forthcoming, we're done. */
|
|
if (gotten == 0)
|
|
break;
|
|
written = fwrite (buf, gotten, 1, fp);
|
|
if (written < 1)
|
|
perror_with_name (pathname);
|
|
offset += gotten;
|
|
}
|
|
|
|
/* Mark the end of trace data. (We know that gotten is 0 at this point.) */
|
|
written = fwrite (&gotten, 4, 1, fp);
|
|
if (written < 1)
|
|
perror_with_name (pathname);
|
|
|
|
do_cleanups (cleanup);
|
|
}
|
|
|
|
static void
|
|
trace_save_command (char *args, int from_tty)
|
|
{
|
|
int target_does_save = 0;
|
|
char **argv;
|
|
char *filename = NULL;
|
|
struct cleanup *back_to;
|
|
|
|
if (args == NULL)
|
|
error_no_arg (_("file in which to save trace data"));
|
|
|
|
argv = gdb_buildargv (args);
|
|
back_to = make_cleanup_freeargv (argv);
|
|
|
|
for (; *argv; ++argv)
|
|
{
|
|
if (strcmp (*argv, "-r") == 0)
|
|
target_does_save = 1;
|
|
else if (**argv == '-')
|
|
error (_("unknown option `%s'"), *argv);
|
|
else
|
|
filename = *argv;
|
|
}
|
|
|
|
if (!filename)
|
|
error_no_arg (_("file in which to save trace data"));
|
|
|
|
trace_save (filename, target_does_save);
|
|
|
|
if (from_tty)
|
|
printf_filtered (_("Trace data saved to file '%s'.\n"), args);
|
|
|
|
do_cleanups (back_to);
|
|
}
|
|
|
|
/* Tell the target what to do with an ongoing tracing run if GDB
|
|
disconnects for some reason. */
|
|
|
|
void
|
|
send_disconnected_tracing_value (int value)
|
|
{
|
|
target_set_disconnected_tracing (value);
|
|
}
|
|
|
|
static void
|
|
set_disconnected_tracing (char *args, int from_tty,
|
|
struct cmd_list_element *c)
|
|
{
|
|
send_disconnected_tracing_value (disconnected_tracing);
|
|
}
|
|
|
|
static void
|
|
set_circular_trace_buffer (char *args, int from_tty,
|
|
struct cmd_list_element *c)
|
|
{
|
|
target_set_circular_trace_buffer (circular_trace_buffer);
|
|
}
|
|
|
|
/* Convert the memory pointed to by mem into hex, placing result in buf.
|
|
* Return a pointer to the last char put in buf (null)
|
|
* "stolen" from sparc-stub.c
|
|
*/
|
|
|
|
static const char hexchars[] = "0123456789abcdef";
|
|
|
|
static char *
|
|
mem2hex (gdb_byte *mem, char *buf, int count)
|
|
{
|
|
gdb_byte ch;
|
|
|
|
while (count-- > 0)
|
|
{
|
|
ch = *mem++;
|
|
|
|
*buf++ = hexchars[ch >> 4];
|
|
*buf++ = hexchars[ch & 0xf];
|
|
}
|
|
|
|
*buf = 0;
|
|
|
|
return buf;
|
|
}
|
|
|
|
int
|
|
get_traceframe_number (void)
|
|
{
|
|
return traceframe_number;
|
|
}
|
|
|
|
/* Make the traceframe NUM be the current trace frame. Does nothing
|
|
if NUM is already current. */
|
|
|
|
void
|
|
set_traceframe_number (int num)
|
|
{
|
|
int newnum;
|
|
|
|
if (traceframe_number == num)
|
|
{
|
|
/* Nothing to do. */
|
|
return;
|
|
}
|
|
|
|
newnum = target_trace_find (tfind_number, num, 0, 0, NULL);
|
|
|
|
if (newnum != num)
|
|
warning (_("could not change traceframe"));
|
|
|
|
traceframe_number = newnum;
|
|
|
|
/* Changing the traceframe changes our view of registers and of the
|
|
frame chain. */
|
|
registers_changed ();
|
|
}
|
|
|
|
/* A cleanup used when switching away and back from tfind mode. */
|
|
|
|
struct current_traceframe_cleanup
|
|
{
|
|
/* The traceframe we were inspecting. */
|
|
int traceframe_number;
|
|
};
|
|
|
|
static void
|
|
do_restore_current_traceframe_cleanup (void *arg)
|
|
{
|
|
struct current_traceframe_cleanup *old = arg;
|
|
|
|
set_traceframe_number (old->traceframe_number);
|
|
}
|
|
|
|
static void
|
|
restore_current_traceframe_cleanup_dtor (void *arg)
|
|
{
|
|
struct current_traceframe_cleanup *old = arg;
|
|
|
|
xfree (old);
|
|
}
|
|
|
|
struct cleanup *
|
|
make_cleanup_restore_current_traceframe (void)
|
|
{
|
|
struct current_traceframe_cleanup *old;
|
|
|
|
old = xmalloc (sizeof (struct current_traceframe_cleanup));
|
|
old->traceframe_number = traceframe_number;
|
|
|
|
return make_cleanup_dtor (do_restore_current_traceframe_cleanup, old,
|
|
restore_current_traceframe_cleanup_dtor);
|
|
}
|
|
|
|
/* Given a number and address, return an uploaded tracepoint with that
|
|
number, creating if necessary. */
|
|
|
|
struct uploaded_tp *
|
|
get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp)
|
|
{
|
|
struct uploaded_tp *utp;
|
|
|
|
for (utp = *utpp; utp; utp = utp->next)
|
|
if (utp->number == num && utp->addr == addr)
|
|
return utp;
|
|
utp = (struct uploaded_tp *) xmalloc (sizeof (struct uploaded_tp));
|
|
memset (utp, 0, sizeof (struct uploaded_tp));
|
|
utp->number = num;
|
|
utp->addr = addr;
|
|
utp->actions = NULL;
|
|
utp->step_actions = NULL;
|
|
utp->cmd_strings = NULL;
|
|
utp->next = *utpp;
|
|
*utpp = utp;
|
|
return utp;
|
|
}
|
|
|
|
static void
|
|
free_uploaded_tps (struct uploaded_tp **utpp)
|
|
{
|
|
struct uploaded_tp *next_one;
|
|
|
|
while (*utpp)
|
|
{
|
|
next_one = (*utpp)->next;
|
|
xfree (*utpp);
|
|
*utpp = next_one;
|
|
}
|
|
}
|
|
|
|
/* Given a number and address, return an uploaded tracepoint with that
|
|
number, creating if necessary. */
|
|
|
|
struct uploaded_tsv *
|
|
get_uploaded_tsv (int num, struct uploaded_tsv **utsvp)
|
|
{
|
|
struct uploaded_tsv *utsv;
|
|
|
|
for (utsv = *utsvp; utsv; utsv = utsv->next)
|
|
if (utsv->number == num)
|
|
return utsv;
|
|
utsv = (struct uploaded_tsv *) xmalloc (sizeof (struct uploaded_tsv));
|
|
memset (utsv, 0, sizeof (struct uploaded_tsv));
|
|
utsv->number = num;
|
|
utsv->next = *utsvp;
|
|
*utsvp = utsv;
|
|
return utsv;
|
|
}
|
|
|
|
static void
|
|
free_uploaded_tsvs (struct uploaded_tsv **utsvp)
|
|
{
|
|
struct uploaded_tsv *next_one;
|
|
|
|
while (*utsvp)
|
|
{
|
|
next_one = (*utsvp)->next;
|
|
xfree (*utsvp);
|
|
*utsvp = next_one;
|
|
}
|
|
}
|
|
|
|
/* Look for an existing tracepoint that seems similar enough to the
|
|
uploaded one. Enablement isn't compared, because the user can
|
|
toggle that freely, and may have done so in anticipation of the
|
|
next trace run. */
|
|
|
|
struct breakpoint *
|
|
find_matching_tracepoint (struct uploaded_tp *utp)
|
|
{
|
|
VEC(breakpoint_p) *tp_vec = all_tracepoints ();
|
|
int ix;
|
|
struct breakpoint *t;
|
|
struct bp_location *loc;
|
|
|
|
for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
|
|
{
|
|
if (t->type == utp->type
|
|
&& t->step_count == utp->step
|
|
&& t->pass_count == utp->pass
|
|
/* FIXME also test conditionals and actions */
|
|
)
|
|
{
|
|
/* Scan the locations for an address match. */
|
|
for (loc = t->loc; loc; loc = loc->next)
|
|
{
|
|
if (loc->address == utp->addr)
|
|
return t;
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Given a list of tracepoints uploaded from a target, attempt to
|
|
match them up with existing tracepoints, and create new ones if not
|
|
found. */
|
|
|
|
void
|
|
merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps)
|
|
{
|
|
struct uploaded_tp *utp;
|
|
struct breakpoint *t;
|
|
|
|
/* Look for GDB tracepoints that match up with our uploaded versions. */
|
|
for (utp = *uploaded_tps; utp; utp = utp->next)
|
|
{
|
|
t = find_matching_tracepoint (utp);
|
|
if (t)
|
|
printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
|
|
t->number, utp->number, paddress (get_current_arch (), utp->addr));
|
|
else
|
|
{
|
|
t = create_tracepoint_from_upload (utp);
|
|
if (t)
|
|
printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
|
|
t->number, utp->number, paddress (get_current_arch (), utp->addr));
|
|
else
|
|
printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
|
|
utp->number, paddress (get_current_arch (), utp->addr));
|
|
}
|
|
/* Whether found or created, record the number used by the
|
|
target, to help with mapping target tracepoints back to their
|
|
counterparts here. */
|
|
if (t)
|
|
t->number_on_target = utp->number;
|
|
}
|
|
|
|
free_uploaded_tps (uploaded_tps);
|
|
}
|
|
|
|
/* Trace state variables don't have much to identify them beyond their
|
|
name, so just use that to detect matches. */
|
|
|
|
struct trace_state_variable *
|
|
find_matching_tsv (struct uploaded_tsv *utsv)
|
|
{
|
|
if (!utsv->name)
|
|
return NULL;
|
|
|
|
return find_trace_state_variable (utsv->name);
|
|
}
|
|
|
|
struct trace_state_variable *
|
|
create_tsv_from_upload (struct uploaded_tsv *utsv)
|
|
{
|
|
const char *namebase;
|
|
char buf[20];
|
|
int try_num = 0;
|
|
struct trace_state_variable *tsv;
|
|
|
|
if (utsv->name)
|
|
{
|
|
namebase = utsv->name;
|
|
sprintf (buf, "%s", namebase);
|
|
}
|
|
else
|
|
{
|
|
namebase = "__tsv";
|
|
sprintf (buf, "%s_%d", namebase, try_num++);
|
|
}
|
|
|
|
/* Fish for a name that is not in use. */
|
|
/* (should check against all internal vars?) */
|
|
while (find_trace_state_variable (buf))
|
|
sprintf (buf, "%s_%d", namebase, try_num++);
|
|
|
|
/* We have an available name, create the variable. */
|
|
tsv = create_trace_state_variable (xstrdup (buf));
|
|
tsv->initial_value = utsv->initial_value;
|
|
tsv->builtin = utsv->builtin;
|
|
|
|
return tsv;
|
|
}
|
|
|
|
/* Given a list of uploaded trace state variables, try to match them
|
|
up with existing variables, or create additional ones. */
|
|
|
|
void
|
|
merge_uploaded_trace_state_variables (struct uploaded_tsv **uploaded_tsvs)
|
|
{
|
|
int ix;
|
|
struct uploaded_tsv *utsv;
|
|
struct trace_state_variable *tsv;
|
|
int highest;
|
|
|
|
/* Most likely some numbers will have to be reassigned as part of
|
|
the merge, so clear them all in anticipation. */
|
|
for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
|
|
tsv->number = 0;
|
|
|
|
for (utsv = *uploaded_tsvs; utsv; utsv = utsv->next)
|
|
{
|
|
tsv = find_matching_tsv (utsv);
|
|
if (tsv)
|
|
printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
|
|
tsv->name, utsv->number);
|
|
else
|
|
{
|
|
tsv = create_tsv_from_upload (utsv);
|
|
printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
|
|
tsv->name, utsv->number);
|
|
}
|
|
/* Give precedence to numberings that come from the target. */
|
|
if (tsv)
|
|
tsv->number = utsv->number;
|
|
}
|
|
|
|
/* Renumber everything that didn't get a target-assigned number. */
|
|
highest = 0;
|
|
for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
|
|
if (tsv->number > highest)
|
|
highest = tsv->number;
|
|
|
|
++highest;
|
|
for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
|
|
if (tsv->number == 0)
|
|
tsv->number = highest++;
|
|
|
|
free_uploaded_tsvs (uploaded_tsvs);
|
|
}
|
|
|
|
/* target tfile command */
|
|
|
|
struct target_ops tfile_ops;
|
|
|
|
/* Fill in tfile_ops with its defined operations and properties. */
|
|
|
|
#define TRACE_HEADER_SIZE 8
|
|
|
|
char *trace_filename;
|
|
int trace_fd = -1;
|
|
off_t trace_frames_offset;
|
|
off_t cur_offset;
|
|
int cur_data_size;
|
|
int trace_regblock_size;
|
|
|
|
static void tfile_interp_line (char *line,
|
|
struct uploaded_tp **utpp,
|
|
struct uploaded_tsv **utsvp);
|
|
|
|
static void
|
|
tfile_open (char *filename, int from_tty)
|
|
{
|
|
char *temp;
|
|
struct cleanup *old_chain;
|
|
int flags;
|
|
int scratch_chan;
|
|
char header[TRACE_HEADER_SIZE];
|
|
char linebuf[1000]; /* should be max remote packet size or so */
|
|
char byte;
|
|
int bytes, i, gotten;
|
|
struct trace_status *ts;
|
|
struct uploaded_tp *uploaded_tps = NULL;
|
|
struct uploaded_tsv *uploaded_tsvs = NULL;
|
|
|
|
target_preopen (from_tty);
|
|
if (!filename)
|
|
error (_("No trace file specified."));
|
|
|
|
filename = tilde_expand (filename);
|
|
if (!IS_ABSOLUTE_PATH(filename))
|
|
{
|
|
temp = concat (current_directory, "/", filename, (char *)NULL);
|
|
xfree (filename);
|
|
filename = temp;
|
|
}
|
|
|
|
old_chain = make_cleanup (xfree, filename);
|
|
|
|
flags = O_BINARY | O_LARGEFILE;
|
|
flags |= O_RDONLY;
|
|
scratch_chan = open (filename, flags, 0);
|
|
if (scratch_chan < 0)
|
|
perror_with_name (filename);
|
|
|
|
/* Looks semi-reasonable. Toss the old trace file and work on the new. */
|
|
|
|
discard_cleanups (old_chain); /* Don't free filename any more */
|
|
unpush_target (&tfile_ops);
|
|
|
|
push_target (&tfile_ops);
|
|
|
|
trace_filename = xstrdup (filename);
|
|
trace_fd = scratch_chan;
|
|
|
|
bytes = 0;
|
|
/* Read the file header and test for validity. */
|
|
gotten = read (trace_fd, &header, TRACE_HEADER_SIZE);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < TRACE_HEADER_SIZE)
|
|
error (_("Premature end of file while reading trace file"));
|
|
|
|
bytes += TRACE_HEADER_SIZE;
|
|
if (!(header[0] == 0x7f
|
|
&& (strncmp (header + 1, "TRACE0\n", 7) == 0)))
|
|
error (_("File is not a valid trace file."));
|
|
|
|
trace_regblock_size = 0;
|
|
ts = current_trace_status ();
|
|
/* We know we're working with a file. */
|
|
ts->from_file = 1;
|
|
/* Set defaults in case there is no status line. */
|
|
ts->running_known = 0;
|
|
ts->stop_reason = trace_stop_reason_unknown;
|
|
ts->traceframe_count = -1;
|
|
ts->buffer_free = 0;
|
|
ts->disconnected_tracing = 0;
|
|
ts->circular_buffer = 0;
|
|
|
|
/* Read through a section of newline-terminated lines that
|
|
define things like tracepoints. */
|
|
i = 0;
|
|
while (1)
|
|
{
|
|
gotten = read (trace_fd, &byte, 1);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 1)
|
|
error (_("Premature end of file while reading trace file"));
|
|
|
|
++bytes;
|
|
if (byte == '\n')
|
|
{
|
|
/* Empty line marks end of the definition section. */
|
|
if (i == 0)
|
|
break;
|
|
linebuf[i] = '\0';
|
|
i = 0;
|
|
tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs);
|
|
}
|
|
else
|
|
linebuf[i++] = byte;
|
|
if (i >= 1000)
|
|
error (_("Excessively long lines in trace file"));
|
|
}
|
|
|
|
/* Add the file's tracepoints and variables into the current mix. */
|
|
|
|
/* Get trace state variables first, they may be checked when parsing
|
|
uploaded commands. */
|
|
merge_uploaded_trace_state_variables (&uploaded_tsvs);
|
|
|
|
merge_uploaded_tracepoints (&uploaded_tps);
|
|
|
|
/* Record the starting offset of the binary trace data. */
|
|
trace_frames_offset = bytes;
|
|
|
|
/* If we don't have a blocksize, we can't interpret the
|
|
traceframes. */
|
|
if (trace_regblock_size == 0)
|
|
error (_("No register block size recorded in trace file"));
|
|
if (ts->traceframe_count <= 0)
|
|
{
|
|
warning ("No traceframes present in this file.");
|
|
return;
|
|
}
|
|
|
|
#define TFILE_PID (1)
|
|
inferior_appeared (current_inferior (), TFILE_PID);
|
|
inferior_ptid = pid_to_ptid (TFILE_PID);
|
|
add_thread_silent (inferior_ptid);
|
|
|
|
post_create_inferior (&tfile_ops, from_tty);
|
|
|
|
#if 0
|
|
/* FIXME this will get defined in MI patch submission */
|
|
tfind_1 (tfind_number, 0, 0, 0, 0);
|
|
#endif
|
|
}
|
|
|
|
/* Interpret the given line from the definitions part of the trace
|
|
file. */
|
|
|
|
static void
|
|
tfile_interp_line (char *line,
|
|
struct uploaded_tp **utpp, struct uploaded_tsv **utsvp)
|
|
{
|
|
char *p = line;
|
|
|
|
if (strncmp (p, "R ", strlen ("R ")) == 0)
|
|
{
|
|
p += strlen ("R ");
|
|
trace_regblock_size = strtol (p, &p, 16);
|
|
}
|
|
else if (strncmp (p, "status ", strlen ("status ")) == 0)
|
|
{
|
|
p += strlen ("status ");
|
|
parse_trace_status (p, current_trace_status ());
|
|
}
|
|
else if (strncmp (p, "tp ", strlen ("tp ")) == 0)
|
|
{
|
|
p += strlen ("tp ");
|
|
parse_tracepoint_definition (p, utpp);
|
|
}
|
|
else if (strncmp (p, "tsv ", strlen ("tsv ")) == 0)
|
|
{
|
|
p += strlen ("tsv ");
|
|
parse_tsv_definition (p, utsvp);
|
|
}
|
|
else
|
|
warning ("Ignoring trace file definition \"%s\"", line);
|
|
}
|
|
|
|
/* Parse the part of trace status syntax that is shared between
|
|
the remote protocol and the trace file reader. */
|
|
|
|
extern char *unpack_varlen_hex (char *buff, ULONGEST *result);
|
|
|
|
void
|
|
parse_trace_status (char *line, struct trace_status *ts)
|
|
{
|
|
char *p = line, *p1, *p2, *p_temp;
|
|
ULONGEST val;
|
|
|
|
ts->running_known = 1;
|
|
ts->running = (*p++ == '1');
|
|
ts->stop_reason = trace_stop_reason_unknown;
|
|
xfree (ts->error_desc);
|
|
ts->error_desc = NULL;
|
|
ts->traceframe_count = -1;
|
|
ts->traceframes_created = -1;
|
|
ts->buffer_free = -1;
|
|
ts->buffer_size = -1;
|
|
ts->disconnected_tracing = 0;
|
|
ts->circular_buffer = 0;
|
|
|
|
while (*p++)
|
|
{
|
|
p1 = strchr (p, ':');
|
|
if (p1 == NULL)
|
|
error (_("Malformed trace status, at %s\n\
|
|
Status line: '%s'\n"), p, line);
|
|
if (strncmp (p, stop_reason_names[trace_buffer_full], p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->stop_reason = trace_buffer_full;
|
|
}
|
|
else if (strncmp (p, stop_reason_names[trace_never_run], p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->stop_reason = trace_never_run;
|
|
}
|
|
else if (strncmp (p, stop_reason_names[tracepoint_passcount], p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->stop_reason = tracepoint_passcount;
|
|
ts->stopping_tracepoint = val;
|
|
}
|
|
else if (strncmp (p, stop_reason_names[tstop_command], p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->stop_reason = tstop_command;
|
|
}
|
|
else if (strncmp (p, stop_reason_names[trace_disconnected], p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->stop_reason = trace_disconnected;
|
|
}
|
|
else if (strncmp (p, stop_reason_names[tracepoint_error], p1 - p) == 0)
|
|
{
|
|
p2 = strchr (++p1, ':');
|
|
if (p2 != p1)
|
|
{
|
|
int end;
|
|
|
|
ts->error_desc = xmalloc ((p2 - p1) / 2 + 1);
|
|
end = hex2bin (p1, ts->error_desc, (p2 - p1) / 2);
|
|
ts->error_desc[end] = '\0';
|
|
}
|
|
else
|
|
ts->error_desc = xstrdup ("");
|
|
|
|
p = unpack_varlen_hex (++p2, &val);
|
|
ts->stopping_tracepoint = val;
|
|
ts->stop_reason = tracepoint_error;
|
|
}
|
|
else if (strncmp (p, "tframes", p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->traceframe_count = val;
|
|
}
|
|
else if (strncmp (p, "tcreated", p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->traceframes_created = val;
|
|
}
|
|
else if (strncmp (p, "tfree", p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->buffer_free = val;
|
|
}
|
|
else if (strncmp (p, "tsize", p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->buffer_size = val;
|
|
}
|
|
else if (strncmp (p, "disconn", p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->disconnected_tracing = val;
|
|
}
|
|
else if (strncmp (p, "circular", p1 - p) == 0)
|
|
{
|
|
p = unpack_varlen_hex (++p1, &val);
|
|
ts->circular_buffer = val;
|
|
}
|
|
else
|
|
{
|
|
/* Silently skip unknown optional info. */
|
|
p_temp = strchr (p1 + 1, ';');
|
|
if (p_temp)
|
|
p = p_temp;
|
|
else
|
|
/* Must be at the end. */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Given a line of text defining a part of a tracepoint, parse it into
|
|
an "uploaded tracepoint". */
|
|
|
|
void
|
|
parse_tracepoint_definition (char *line, struct uploaded_tp **utpp)
|
|
{
|
|
char *p;
|
|
char piece;
|
|
ULONGEST num, addr, step, pass, orig_size, xlen, start;
|
|
int enabled, i, end;
|
|
enum bptype type;
|
|
char *cond, *srctype, *src, *buf;
|
|
struct uploaded_tp *utp = NULL;
|
|
|
|
p = line;
|
|
/* Both tracepoint and action definitions start with the same number
|
|
and address sequence. */
|
|
piece = *p++;
|
|
p = unpack_varlen_hex (p, &num);
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &addr);
|
|
p++; /* skip a colon */
|
|
if (piece == 'T')
|
|
{
|
|
enabled = (*p++ == 'E');
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &step);
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &pass);
|
|
type = bp_tracepoint;
|
|
cond = NULL;
|
|
/* Thumb through optional fields. */
|
|
while (*p == ':')
|
|
{
|
|
p++; /* skip a colon */
|
|
if (*p == 'F')
|
|
{
|
|
type = bp_fast_tracepoint;
|
|
p++;
|
|
p = unpack_varlen_hex (p, &orig_size);
|
|
}
|
|
else if (*p == 'X')
|
|
{
|
|
p++;
|
|
p = unpack_varlen_hex (p, &xlen);
|
|
p++; /* skip a comma */
|
|
cond = (char *) xmalloc (2 * xlen + 1);
|
|
strncpy (cond, p, 2 * xlen);
|
|
cond[2 * xlen] = '\0';
|
|
p += 2 * xlen;
|
|
}
|
|
else
|
|
warning (_("Unrecognized char '%c' in tracepoint definition, skipping rest"), *p);
|
|
}
|
|
utp = get_uploaded_tp (num, addr, utpp);
|
|
utp->type = type;
|
|
utp->enabled = enabled;
|
|
utp->step = step;
|
|
utp->pass = pass;
|
|
utp->cond = cond;
|
|
}
|
|
else if (piece == 'A')
|
|
{
|
|
utp = get_uploaded_tp (num, addr, utpp);
|
|
VEC_safe_push (char_ptr, utp->actions, xstrdup (p));
|
|
}
|
|
else if (piece == 'S')
|
|
{
|
|
utp = get_uploaded_tp (num, addr, utpp);
|
|
VEC_safe_push (char_ptr, utp->step_actions, xstrdup (p));
|
|
}
|
|
else if (piece == 'Z')
|
|
{
|
|
/* Parse a chunk of source form definition. */
|
|
utp = get_uploaded_tp (num, addr, utpp);
|
|
srctype = p;
|
|
p = strchr (p, ':');
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &start);
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &xlen);
|
|
p++; /* skip a colon */
|
|
|
|
buf = alloca (strlen (line));
|
|
|
|
end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
|
|
buf[end] = '\0';
|
|
|
|
if (strncmp (srctype, "at:", strlen ("at:")) == 0)
|
|
utp->at_string = xstrdup (buf);
|
|
else if (strncmp (srctype, "cond:", strlen ("cond:")) == 0)
|
|
utp->cond_string = xstrdup (buf);
|
|
else if (strncmp (srctype, "cmd:", strlen ("cmd:")) == 0)
|
|
VEC_safe_push (char_ptr, utp->cmd_strings, xstrdup (buf));
|
|
}
|
|
else
|
|
{
|
|
/* Don't error out, the target might be sending us optional
|
|
info that we don't care about. */
|
|
warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece);
|
|
}
|
|
}
|
|
|
|
/* Convert a textual description of a trace state variable into an
|
|
uploaded object. */
|
|
|
|
void
|
|
parse_tsv_definition (char *line, struct uploaded_tsv **utsvp)
|
|
{
|
|
char *p, *buf;
|
|
ULONGEST num, initval, builtin;
|
|
int end;
|
|
struct uploaded_tsv *utsv = NULL;
|
|
|
|
buf = alloca (strlen (line));
|
|
|
|
p = line;
|
|
p = unpack_varlen_hex (p, &num);
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &initval);
|
|
p++; /* skip a colon */
|
|
p = unpack_varlen_hex (p, &builtin);
|
|
p++; /* skip a colon */
|
|
end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
|
|
buf[end] = '\0';
|
|
|
|
utsv = get_uploaded_tsv (num, utsvp);
|
|
utsv->initial_value = initval;
|
|
utsv->builtin = builtin;
|
|
utsv->name = xstrdup (buf);
|
|
}
|
|
|
|
/* Close the trace file and generally clean up. */
|
|
|
|
static void
|
|
tfile_close (int quitting)
|
|
{
|
|
int pid;
|
|
|
|
if (trace_fd < 0)
|
|
return;
|
|
|
|
pid = ptid_get_pid (inferior_ptid);
|
|
inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
|
|
exit_inferior_silent (pid);
|
|
|
|
close (trace_fd);
|
|
trace_fd = -1;
|
|
if (trace_filename)
|
|
xfree (trace_filename);
|
|
}
|
|
|
|
static void
|
|
tfile_files_info (struct target_ops *t)
|
|
{
|
|
/* (it would be useful to mention the name of the file) */
|
|
printf_filtered ("Looking at a trace file.\n");
|
|
}
|
|
|
|
/* The trace status for a file is that tracing can never be run. */
|
|
|
|
static int
|
|
tfile_get_trace_status (struct trace_status *ts)
|
|
{
|
|
/* Other bits of trace status were collected as part of opening the
|
|
trace files, so nothing to do here. */
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* Given the position of a traceframe in the file, figure out what
|
|
address the frame was collected at. This would normally be the
|
|
value of a collected PC register, but if not available, we
|
|
improvise. */
|
|
|
|
static ULONGEST
|
|
tfile_get_traceframe_address (off_t tframe_offset)
|
|
{
|
|
ULONGEST addr = 0;
|
|
short tpnum;
|
|
struct breakpoint *tp;
|
|
off_t saved_offset = cur_offset;
|
|
int gotten;
|
|
|
|
/* FIXME dig pc out of collected registers */
|
|
|
|
/* Fall back to using tracepoint address. */
|
|
lseek (trace_fd, tframe_offset, SEEK_SET);
|
|
gotten = read (trace_fd, &tpnum, 2);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 2)
|
|
error (_("Premature end of file while reading trace file"));
|
|
|
|
tp = get_tracepoint_by_number_on_target (tpnum);
|
|
/* FIXME this is a poor heuristic if multiple locations */
|
|
if (tp && tp->loc)
|
|
addr = tp->loc->address;
|
|
|
|
/* Restore our seek position. */
|
|
cur_offset = saved_offset;
|
|
lseek (trace_fd, cur_offset, SEEK_SET);
|
|
return addr;
|
|
}
|
|
|
|
/* Given a type of search and some parameters, scan the collection of
|
|
traceframes in the file looking for a match. When found, return
|
|
both the traceframe and tracepoint number, otherwise -1 for
|
|
each. */
|
|
|
|
static int
|
|
tfile_trace_find (enum trace_find_type type, int num,
|
|
ULONGEST addr1, ULONGEST addr2, int *tpp)
|
|
{
|
|
short tpnum;
|
|
int tfnum = 0, found = 0, gotten;
|
|
int data_size;
|
|
struct breakpoint *tp;
|
|
off_t offset, tframe_offset;
|
|
ULONGEST tfaddr;
|
|
|
|
lseek (trace_fd, trace_frames_offset, SEEK_SET);
|
|
offset = trace_frames_offset;
|
|
while (1)
|
|
{
|
|
tframe_offset = offset;
|
|
gotten = read (trace_fd, &tpnum, 2);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 2)
|
|
error (_("Premature end of file while reading trace file"));
|
|
offset += 2;
|
|
if (tpnum == 0)
|
|
break;
|
|
gotten = read (trace_fd, &data_size, 4);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 4)
|
|
error (_("Premature end of file while reading trace file"));
|
|
offset += 4;
|
|
switch (type)
|
|
{
|
|
case tfind_number:
|
|
if (tfnum == num)
|
|
found = 1;
|
|
break;
|
|
case tfind_pc:
|
|
tfaddr = tfile_get_traceframe_address (tframe_offset);
|
|
if (tfaddr == addr1)
|
|
found = 1;
|
|
break;
|
|
case tfind_tp:
|
|
tp = get_tracepoint (num);
|
|
if (tp && tpnum == tp->number_on_target)
|
|
found = 1;
|
|
break;
|
|
case tfind_range:
|
|
tfaddr = tfile_get_traceframe_address (tframe_offset);
|
|
if (addr1 <= tfaddr && tfaddr <= addr2)
|
|
found = 1;
|
|
break;
|
|
case tfind_outside:
|
|
tfaddr = tfile_get_traceframe_address (tframe_offset);
|
|
if (!(addr1 <= tfaddr && tfaddr <= addr2))
|
|
found = 1;
|
|
break;
|
|
default:
|
|
internal_error (__FILE__, __LINE__, _("unknown tfind type"));
|
|
}
|
|
if (found)
|
|
{
|
|
if (tpp)
|
|
*tpp = tpnum;
|
|
cur_offset = offset;
|
|
cur_data_size = data_size;
|
|
return tfnum;
|
|
}
|
|
/* Skip past the traceframe's data. */
|
|
lseek (trace_fd, data_size, SEEK_CUR);
|
|
offset += data_size;
|
|
/* Update our own count of traceframes. */
|
|
++tfnum;
|
|
}
|
|
/* Did not find what we were looking for. */
|
|
if (tpp)
|
|
*tpp = -1;
|
|
return -1;
|
|
}
|
|
|
|
/* Look for a block of saved registers in the traceframe, and get the
|
|
requested register from it. */
|
|
|
|
static void
|
|
tfile_fetch_registers (struct target_ops *ops,
|
|
struct regcache *regcache, int regno)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
char block_type;
|
|
int i, pos, offset, regn, regsize, gotten, pc_regno;
|
|
unsigned short mlen;
|
|
char *regs;
|
|
|
|
/* An uninitialized reg size says we're not going to be
|
|
successful at getting register blocks. */
|
|
if (!trace_regblock_size)
|
|
return;
|
|
|
|
regs = alloca (trace_regblock_size);
|
|
|
|
lseek (trace_fd, cur_offset, SEEK_SET);
|
|
pos = 0;
|
|
while (pos < cur_data_size)
|
|
{
|
|
gotten = read (trace_fd, &block_type, 1);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 1)
|
|
error (_("Premature end of file while reading trace file"));
|
|
|
|
++pos;
|
|
switch (block_type)
|
|
{
|
|
case 'R':
|
|
gotten = read (trace_fd, regs, trace_regblock_size);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < trace_regblock_size)
|
|
error (_("Premature end of file while reading trace file"));
|
|
|
|
/* Assume the block is laid out in GDB register number order,
|
|
each register with the size that it has in GDB. */
|
|
offset = 0;
|
|
for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
|
|
{
|
|
regsize = register_size (gdbarch, regn);
|
|
/* Make sure we stay within block bounds. */
|
|
if (offset + regsize >= trace_regblock_size)
|
|
break;
|
|
if (!regcache_valid_p (regcache, regn))
|
|
{
|
|
if (regno == regn)
|
|
{
|
|
regcache_raw_supply (regcache, regno, regs + offset);
|
|
break;
|
|
}
|
|
else if (regno == -1)
|
|
{
|
|
regcache_raw_supply (regcache, regn, regs + offset);
|
|
}
|
|
}
|
|
offset += regsize;
|
|
}
|
|
return;
|
|
case 'M':
|
|
lseek (trace_fd, 8, SEEK_CUR);
|
|
gotten = read (trace_fd, &mlen, 2);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 2)
|
|
error (_("Premature end of file while reading trace file"));
|
|
lseek (trace_fd, mlen, SEEK_CUR);
|
|
pos += (8 + 2 + mlen);
|
|
break;
|
|
case 'V':
|
|
lseek (trace_fd, 4 + 8, SEEK_CUR);
|
|
pos += (4 + 8);
|
|
break;
|
|
default:
|
|
error ("Unknown block type '%c' (0x%x) in trace frame",
|
|
block_type, block_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* We get here if no register data has been found. Although we
|
|
don't like making up numbers, GDB has all manner of troubles when
|
|
the target says some register is not available. Filling in with
|
|
zeroes is a reasonable fallback. */
|
|
for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
|
|
regcache_raw_supply (regcache, regn, NULL);
|
|
|
|
/* We can often usefully guess that the PC is going to be the same
|
|
as the address of the tracepoint. */
|
|
pc_regno = gdbarch_pc_regnum (gdbarch);
|
|
if (pc_regno >= 0 && (regno == -1 || regno == pc_regno))
|
|
{
|
|
struct breakpoint *tp = get_tracepoint (tracepoint_number);
|
|
|
|
if (tp && tp->loc)
|
|
{
|
|
/* But don't try to guess if tracepoint is multi-location... */
|
|
if (tp->loc->next)
|
|
{
|
|
warning ("Tracepoint %d has multiple locations, cannot infer $pc",
|
|
tp->number);
|
|
return;
|
|
}
|
|
/* ... or does while-stepping. */
|
|
if (tp->step_count > 0)
|
|
{
|
|
warning ("Tracepoint %d does while-stepping, cannot infer $pc",
|
|
tp->number);
|
|
return;
|
|
}
|
|
|
|
store_unsigned_integer (regs, register_size (gdbarch, pc_regno),
|
|
gdbarch_byte_order (gdbarch),
|
|
tp->loc->address);
|
|
regcache_raw_supply (regcache, pc_regno, regs);
|
|
}
|
|
}
|
|
}
|
|
|
|
static LONGEST
|
|
tfile_xfer_partial (struct target_ops *ops, enum target_object object,
|
|
const char *annex, gdb_byte *readbuf,
|
|
const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
|
|
{
|
|
char block_type;
|
|
int pos, gotten;
|
|
ULONGEST maddr, amt;
|
|
unsigned short mlen;
|
|
|
|
/* We're only doing regular memory for now. */
|
|
if (object != TARGET_OBJECT_MEMORY)
|
|
return -1;
|
|
|
|
if (readbuf == NULL)
|
|
error ("tfile_xfer_partial: trace file is read-only");
|
|
|
|
lseek (trace_fd, cur_offset, SEEK_SET);
|
|
pos = 0;
|
|
while (pos < cur_data_size)
|
|
{
|
|
gotten = read (trace_fd, &block_type, 1);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 1)
|
|
error (_("Premature end of file while reading trace file"));
|
|
++pos;
|
|
switch (block_type)
|
|
{
|
|
case 'R':
|
|
lseek (trace_fd, trace_regblock_size, SEEK_CUR);
|
|
pos += trace_regblock_size;
|
|
break;
|
|
case 'M':
|
|
gotten = read (trace_fd, &maddr, 8);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 8)
|
|
error (_("Premature end of file while reading trace file"));
|
|
|
|
gotten = read (trace_fd, &mlen, 2);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 2)
|
|
error (_("Premature end of file while reading trace file"));
|
|
/* If the block includes the first part of the desired
|
|
range, return as much it has; GDB will re-request the
|
|
remainder, which might be in a different block of this
|
|
trace frame. */
|
|
if (maddr <= offset && offset < (maddr + mlen))
|
|
{
|
|
amt = (maddr + mlen) - offset;
|
|
if (amt > len)
|
|
amt = len;
|
|
|
|
gotten = read (trace_fd, readbuf, amt);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
/* While it's acceptable to return less than was
|
|
originally asked for, it's not acceptable to return
|
|
less than what this block claims to contain. */
|
|
else if (gotten < amt)
|
|
error (_("Premature end of file while reading trace file"));
|
|
return amt;
|
|
}
|
|
lseek (trace_fd, mlen, SEEK_CUR);
|
|
pos += (8 + 2 + mlen);
|
|
break;
|
|
case 'V':
|
|
lseek (trace_fd, 4 + 8, SEEK_CUR);
|
|
pos += (4 + 8);
|
|
break;
|
|
default:
|
|
error ("Unknown block type '%c' (0x%x) in traceframe",
|
|
block_type, block_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* It's unduly pedantic to refuse to look at the executable for
|
|
read-only pieces; so do the equivalent of readonly regions aka
|
|
QTro packet. */
|
|
/* FIXME account for relocation at some point */
|
|
if (exec_bfd)
|
|
{
|
|
asection *s;
|
|
bfd_size_type size;
|
|
bfd_vma lma;
|
|
|
|
for (s = exec_bfd->sections; s; s = s->next)
|
|
{
|
|
if ((s->flags & SEC_LOAD) == 0 ||
|
|
(s->flags & SEC_READONLY) == 0)
|
|
continue;
|
|
|
|
lma = s->lma;
|
|
size = bfd_get_section_size (s);
|
|
if (lma <= offset && offset < (lma + size))
|
|
{
|
|
amt = (lma + size) - offset;
|
|
if (amt > len)
|
|
amt = len;
|
|
|
|
amt = bfd_get_section_contents (exec_bfd, s,
|
|
readbuf, offset - lma, amt);
|
|
return amt;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Indicate failure to find the requested memory block. */
|
|
return -1;
|
|
}
|
|
|
|
/* Iterate through the blocks of a trace frame, looking for a 'V'
|
|
block with a matching tsv number. */
|
|
|
|
static int
|
|
tfile_get_trace_state_variable_value (int tsvnum, LONGEST *val)
|
|
{
|
|
char block_type;
|
|
int pos, vnum, gotten;
|
|
unsigned short mlen;
|
|
|
|
lseek (trace_fd, cur_offset, SEEK_SET);
|
|
pos = 0;
|
|
while (pos < cur_data_size)
|
|
{
|
|
gotten = read (trace_fd, &block_type, 1);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 1)
|
|
error (_("Premature end of file while reading trace file"));
|
|
++pos;
|
|
switch (block_type)
|
|
{
|
|
case 'R':
|
|
lseek (trace_fd, trace_regblock_size, SEEK_CUR);
|
|
pos += trace_regblock_size;
|
|
break;
|
|
case 'M':
|
|
lseek (trace_fd, 8, SEEK_CUR);
|
|
gotten = read (trace_fd, &mlen, 2);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 2)
|
|
error (_("Premature end of file while reading trace file"));
|
|
lseek (trace_fd, mlen, SEEK_CUR);
|
|
pos += (8 + 2 + mlen);
|
|
break;
|
|
case 'V':
|
|
gotten = read (trace_fd, &vnum, 4);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 4)
|
|
error (_("Premature end of file while reading trace file"));
|
|
if (tsvnum == vnum)
|
|
{
|
|
gotten = read (trace_fd, val, 8);
|
|
if (gotten < 0)
|
|
perror_with_name (trace_filename);
|
|
else if (gotten < 8)
|
|
error (_("Premature end of file while reading trace file"));
|
|
return 1;
|
|
}
|
|
lseek (trace_fd, 8, SEEK_CUR);
|
|
pos += (4 + 8);
|
|
break;
|
|
default:
|
|
error ("Unknown block type '%c' (0x%x) in traceframe",
|
|
block_type, block_type);
|
|
break;
|
|
}
|
|
}
|
|
/* Didn't find anything. */
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
tfile_has_all_memory (struct target_ops *ops)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
tfile_has_memory (struct target_ops *ops)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
tfile_has_stack (struct target_ops *ops)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
tfile_has_registers (struct target_ops *ops)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
init_tfile_ops (void)
|
|
{
|
|
tfile_ops.to_shortname = "tfile";
|
|
tfile_ops.to_longname = "Local trace dump file";
|
|
tfile_ops.to_doc =
|
|
"Use a trace file as a target. Specify the filename of the trace file.";
|
|
tfile_ops.to_open = tfile_open;
|
|
tfile_ops.to_close = tfile_close;
|
|
tfile_ops.to_fetch_registers = tfile_fetch_registers;
|
|
tfile_ops.to_xfer_partial = tfile_xfer_partial;
|
|
tfile_ops.to_files_info = tfile_files_info;
|
|
tfile_ops.to_get_trace_status = tfile_get_trace_status;
|
|
tfile_ops.to_trace_find = tfile_trace_find;
|
|
tfile_ops.to_get_trace_state_variable_value = tfile_get_trace_state_variable_value;
|
|
/* core_stratum might seem more logical, but GDB doesn't like having
|
|
more than one core_stratum vector. */
|
|
tfile_ops.to_stratum = process_stratum;
|
|
tfile_ops.to_has_all_memory = tfile_has_all_memory;
|
|
tfile_ops.to_has_memory = tfile_has_memory;
|
|
tfile_ops.to_has_stack = tfile_has_stack;
|
|
tfile_ops.to_has_registers = tfile_has_registers;
|
|
tfile_ops.to_magic = OPS_MAGIC;
|
|
}
|
|
|
|
/* module initialization */
|
|
void
|
|
_initialize_tracepoint (void)
|
|
{
|
|
struct cmd_list_element *c;
|
|
|
|
traceframe_number = -1;
|
|
tracepoint_number = -1;
|
|
|
|
if (tracepoint_list.list == NULL)
|
|
{
|
|
tracepoint_list.listsize = 128;
|
|
tracepoint_list.list = xmalloc
|
|
(tracepoint_list.listsize * sizeof (struct memrange));
|
|
}
|
|
if (tracepoint_list.aexpr_list == NULL)
|
|
{
|
|
tracepoint_list.aexpr_listsize = 128;
|
|
tracepoint_list.aexpr_list = xmalloc
|
|
(tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *));
|
|
}
|
|
|
|
if (stepping_list.list == NULL)
|
|
{
|
|
stepping_list.listsize = 128;
|
|
stepping_list.list = xmalloc
|
|
(stepping_list.listsize * sizeof (struct memrange));
|
|
}
|
|
|
|
if (stepping_list.aexpr_list == NULL)
|
|
{
|
|
stepping_list.aexpr_listsize = 128;
|
|
stepping_list.aexpr_list = xmalloc
|
|
(stepping_list.aexpr_listsize * sizeof (struct agent_expr *));
|
|
}
|
|
|
|
add_info ("scope", scope_info,
|
|
_("List the variables local to a scope"));
|
|
|
|
add_cmd ("tracepoints", class_trace, NULL,
|
|
_("Tracing of program execution without stopping the program."),
|
|
&cmdlist);
|
|
|
|
add_com ("tdump", class_trace, trace_dump_command,
|
|
_("Print everything collected at the current tracepoint."));
|
|
|
|
add_com ("tsave", class_trace, trace_save_command, _("\
|
|
Save the trace data to a file.\n\
|
|
Use the '-r' option to direct the target to save directly to the file,\n\
|
|
using its own filesystem."));
|
|
|
|
c = add_com ("tvariable", class_trace, trace_variable_command,_("\
|
|
Define a trace state variable.\n\
|
|
Argument is a $-prefixed name, optionally followed\n\
|
|
by '=' and an expression that sets the initial value\n\
|
|
at the start of tracing."));
|
|
set_cmd_completer (c, expression_completer);
|
|
|
|
add_cmd ("tvariable", class_trace, delete_trace_variable_command, _("\
|
|
Delete one or more trace state variables.\n\
|
|
Arguments are the names of the variables to delete.\n\
|
|
If no arguments are supplied, delete all variables."), &deletelist);
|
|
/* FIXME add a trace variable completer */
|
|
|
|
add_info ("tvariables", tvariables_info, _("\
|
|
Status of trace state variables and their values.\n\
|
|
"));
|
|
|
|
add_prefix_cmd ("tfind", class_trace, trace_find_command, _("\
|
|
Select a trace frame;\n\
|
|
No argument means forward by one frame; '-' means backward by one frame."),
|
|
&tfindlist, "tfind ", 1, &cmdlist);
|
|
|
|
add_cmd ("outside", class_trace, trace_find_outside_command, _("\
|
|
Select a trace frame whose PC is outside the given range (exclusive).\n\
|
|
Usage: tfind outside addr1, addr2"),
|
|
&tfindlist);
|
|
|
|
add_cmd ("range", class_trace, trace_find_range_command, _("\
|
|
Select a trace frame whose PC is in the given range (inclusive).\n\
|
|
Usage: tfind range addr1,addr2"),
|
|
&tfindlist);
|
|
|
|
add_cmd ("line", class_trace, trace_find_line_command, _("\
|
|
Select a trace frame by source line.\n\
|
|
Argument can be a line number (with optional source file), \n\
|
|
a function name, or '*' followed by an address.\n\
|
|
Default argument is 'the next source line that was traced'."),
|
|
&tfindlist);
|
|
|
|
add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, _("\
|
|
Select a trace frame by tracepoint number.\n\
|
|
Default is the tracepoint for the current trace frame."),
|
|
&tfindlist);
|
|
|
|
add_cmd ("pc", class_trace, trace_find_pc_command, _("\
|
|
Select a trace frame by PC.\n\
|
|
Default is the current PC, or the PC of the current trace frame."),
|
|
&tfindlist);
|
|
|
|
add_cmd ("end", class_trace, trace_find_end_command, _("\
|
|
Synonym for 'none'.\n\
|
|
De-select any trace frame and resume 'live' debugging."),
|
|
&tfindlist);
|
|
|
|
add_cmd ("none", class_trace, trace_find_none_command,
|
|
_("De-select any trace frame and resume 'live' debugging."),
|
|
&tfindlist);
|
|
|
|
add_cmd ("start", class_trace, trace_find_start_command,
|
|
_("Select the first trace frame in the trace buffer."),
|
|
&tfindlist);
|
|
|
|
add_com ("tstatus", class_trace, trace_status_command,
|
|
_("Display the status of the current trace data collection."));
|
|
|
|
add_com ("tstop", class_trace, trace_stop_command,
|
|
_("Stop trace data collection."));
|
|
|
|
add_com ("tstart", class_trace, trace_start_command,
|
|
_("Start trace data collection."));
|
|
|
|
add_com ("end", class_trace, end_actions_pseudocommand, _("\
|
|
Ends a list of commands or actions.\n\
|
|
Several GDB commands allow you to enter a list of commands or actions.\n\
|
|
Entering \"end\" on a line by itself is the normal way to terminate\n\
|
|
such a list.\n\n\
|
|
Note: the \"end\" command cannot be used at the gdb prompt."));
|
|
|
|
add_com ("while-stepping", class_trace, while_stepping_pseudocommand, _("\
|
|
Specify single-stepping behavior at a tracepoint.\n\
|
|
Argument is number of instructions to trace in single-step mode\n\
|
|
following the tracepoint. This command is normally followed by\n\
|
|
one or more \"collect\" commands, to specify what to collect\n\
|
|
while single-stepping.\n\n\
|
|
Note: this command can only be used in a tracepoint \"actions\" list."));
|
|
|
|
add_com_alias ("ws", "while-stepping", class_alias, 0);
|
|
add_com_alias ("stepping", "while-stepping", class_alias, 0);
|
|
|
|
add_com ("collect", class_trace, collect_pseudocommand, _("\
|
|
Specify one or more data items to be collected at a tracepoint.\n\
|
|
Accepts a comma-separated list of (one or more) expressions. GDB will\n\
|
|
collect all data (variables, registers) referenced by that expression.\n\
|
|
Also accepts the following special arguments:\n\
|
|
$regs -- all registers.\n\
|
|
$args -- all function arguments.\n\
|
|
$locals -- all variables local to the block/function scope.\n\
|
|
Note: this command can only be used in a tracepoint \"actions\" list."));
|
|
|
|
add_com ("teval", class_trace, teval_pseudocommand, _("\
|
|
Specify one or more expressions to be evaluated at a tracepoint.\n\
|
|
Accepts a comma-separated list of (one or more) expressions.\n\
|
|
The result of each evaluation will be discarded.\n\
|
|
Note: this command can only be used in a tracepoint \"actions\" list."));
|
|
|
|
add_com ("actions", class_trace, trace_actions_command, _("\
|
|
Specify the actions to be taken at a tracepoint.\n\
|
|
Tracepoint actions may include collecting of specified data, \n\
|
|
single-stepping, or enabling/disabling other tracepoints, \n\
|
|
depending on target's capabilities."));
|
|
|
|
default_collect = xstrdup ("");
|
|
add_setshow_string_cmd ("default-collect", class_trace,
|
|
&default_collect, _("\
|
|
Set the list of expressions to collect by default"), _("\
|
|
Show the list of expressions to collect by default"), NULL,
|
|
NULL, NULL,
|
|
&setlist, &showlist);
|
|
|
|
add_setshow_boolean_cmd ("disconnected-tracing", no_class,
|
|
&disconnected_tracing, _("\
|
|
Set whether tracing continues after GDB disconnects."), _("\
|
|
Show whether tracing continues after GDB disconnects."), _("\
|
|
Use this to continue a tracing run even if GDB disconnects\n\
|
|
or detaches from the target. You can reconnect later and look at\n\
|
|
trace data collected in the meantime."),
|
|
set_disconnected_tracing,
|
|
NULL,
|
|
&setlist,
|
|
&showlist);
|
|
|
|
add_setshow_boolean_cmd ("circular-trace-buffer", no_class,
|
|
&circular_trace_buffer, _("\
|
|
Set target's use of circular trace buffer."), _("\
|
|
Show target's use of circular trace buffer."), _("\
|
|
Use this to make the trace buffer into a circular buffer,\n\
|
|
which will discard traceframes (oldest first) instead of filling\n\
|
|
up and stopping the trace run."),
|
|
set_circular_trace_buffer,
|
|
NULL,
|
|
&setlist,
|
|
&showlist);
|
|
|
|
init_tfile_ops ();
|
|
|
|
add_target (&tfile_ops);
|
|
}
|