| /* Tracing functionality for remote targets in custom GDB protocol |
| |
| Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "arch-utils.h" |
| #include "symtab.h" |
| #include "frame.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "gdbcmd.h" |
| #include "value.h" |
| #include "target.h" |
| #include "language.h" |
| #include "gdb_string.h" |
| #include "inferior.h" |
| #include "breakpoint.h" |
| #include "tracepoint.h" |
| #include "linespec.h" |
| #include "regcache.h" |
| #include "completer.h" |
| #include "block.h" |
| #include "dictionary.h" |
| #include "observer.h" |
| #include "user-regs.h" |
| #include "valprint.h" |
| #include "gdbcore.h" |
| #include "objfiles.h" |
| #include "filenames.h" |
| #include "gdbthread.h" |
| #include "stack.h" |
| |
| #include "ax.h" |
| #include "ax-gdb.h" |
| |
| /* readline include files */ |
| #include "readline/readline.h" |
| #include "readline/history.h" |
| |
| /* readline defines this. */ |
| #undef savestring |
| |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| #ifndef O_LARGEFILE |
| #define O_LARGEFILE 0 |
| #endif |
| |
| extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
| extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
| |
| extern void stop_tracing (); |
| |
| /* Maximum length of an agent aexpression. |
| This accounts for the fact that packets are limited to 400 bytes |
| (which includes everything -- including the checksum), and assumes |
| the worst case of maximum length for each of the pieces of a |
| continuation packet. |
| |
| NOTE: expressions get mem2hex'ed otherwise this would be twice as |
| large. (400 - 31)/2 == 184 */ |
| #define MAX_AGENT_EXPR_LEN 184 |
| |
| /* A hook used to notify the UI of tracepoint operations. */ |
| |
| void (*deprecated_trace_find_hook) (char *arg, int from_tty); |
| void (*deprecated_trace_start_stop_hook) (int start, int from_tty); |
| |
| extern void (*deprecated_readline_begin_hook) (char *, ...); |
| extern char *(*deprecated_readline_hook) (char *); |
| extern void (*deprecated_readline_end_hook) (void); |
| |
| /* GDB commands implemented in other modules: |
| */ |
| |
| extern void output_command (char *, int); |
| |
| /* |
| Tracepoint.c: |
| |
| This module defines the following debugger commands: |
| trace : set a tracepoint on a function, line, or address. |
| info trace : list all debugger-defined tracepoints. |
| delete trace : delete one or more tracepoints. |
| enable trace : enable one or more tracepoints. |
| disable trace : disable one or more tracepoints. |
| actions : specify actions to be taken at a tracepoint. |
| passcount : specify a pass count for a tracepoint. |
| tstart : start a trace experiment. |
| tstop : stop a trace experiment. |
| tstatus : query the status of a trace experiment. |
| tfind : find a trace frame in the trace buffer. |
| tdump : print everything collected at the current tracepoint. |
| save-tracepoints : write tracepoint setup into a file. |
| |
| This module defines the following user-visible debugger variables: |
| $trace_frame : sequence number of trace frame currently being debugged. |
| $trace_line : source line of trace frame currently being debugged. |
| $trace_file : source file of trace frame currently being debugged. |
| $tracepoint : tracepoint number of trace frame currently being debugged. |
| */ |
| |
| |
| /* ======= Important global variables: ======= */ |
| |
| /* The list of all trace state variables. We don't retain pointers to |
| any of these for any reason - API is by name or number only - so it |
| works to have a vector of objects. */ |
| |
| typedef struct trace_state_variable tsv_s; |
| DEF_VEC_O(tsv_s); |
| |
| static VEC(tsv_s) *tvariables; |
| |
| /* The next integer to assign to a variable. */ |
| |
| static int next_tsv_number = 1; |
| |
| /* Number of last traceframe collected. */ |
| static int traceframe_number; |
| |
| /* Tracepoint for last traceframe collected. */ |
| static int tracepoint_number; |
| |
| /* Symbol for function for last traceframe collected */ |
| static struct symbol *traceframe_fun; |
| |
| /* Symtab and line for last traceframe collected */ |
| static struct symtab_and_line traceframe_sal; |
| |
| /* Tracing command lists */ |
| static struct cmd_list_element *tfindlist; |
| |
| /* List of expressions to collect by default at each tracepoint hit. */ |
| char *default_collect = ""; |
| |
| static int disconnected_tracing; |
| |
| /* This variable controls whether we ask the target for a linear or |
| circular trace buffer. */ |
| |
| static int circular_trace_buffer; |
| |
| /* ======= Important command functions: ======= */ |
| static void trace_actions_command (char *, int); |
| static void trace_start_command (char *, int); |
| static void trace_stop_command (char *, int); |
| static void trace_status_command (char *, int); |
| static void trace_find_command (char *, int); |
| static void trace_find_pc_command (char *, int); |
| static void trace_find_tracepoint_command (char *, int); |
| static void trace_find_line_command (char *, int); |
| static void trace_find_range_command (char *, int); |
| static void trace_find_outside_command (char *, int); |
| static void trace_dump_command (char *, int); |
| |
| /* support routines */ |
| |
| struct collection_list; |
| static void add_aexpr (struct collection_list *, struct agent_expr *); |
| static char *mem2hex (gdb_byte *, char *, int); |
| static void add_register (struct collection_list *collection, |
| unsigned int regno); |
| |
| extern void send_disconnected_tracing_value (int value); |
| |
| static void free_uploaded_tps (struct uploaded_tp **utpp); |
| static void free_uploaded_tsvs (struct uploaded_tsv **utsvp); |
| |
| |
| extern void _initialize_tracepoint (void); |
| |
| static struct trace_status trace_status; |
| |
| char *stop_reason_names[] = { |
| "tunknown", |
| "tnotrun", |
| "tstop", |
| "tfull", |
| "tdisconnected", |
| "tpasscount", |
| "terror" |
| }; |
| |
| struct trace_status * |
| current_trace_status () |
| { |
| return &trace_status; |
| } |
| |
| /* Set traceframe number to NUM. */ |
| static void |
| set_traceframe_num (int num) |
| { |
| traceframe_number = num; |
| set_internalvar_integer (lookup_internalvar ("trace_frame"), num); |
| } |
| |
| /* Set tracepoint number to NUM. */ |
| static void |
| set_tracepoint_num (int num) |
| { |
| tracepoint_number = num; |
| set_internalvar_integer (lookup_internalvar ("tracepoint"), num); |
| } |
| |
| /* Set externally visible debug variables for querying/printing |
| the traceframe context (line, function, file) */ |
| |
| static void |
| set_traceframe_context (struct frame_info *trace_frame) |
| { |
| CORE_ADDR trace_pc; |
| |
| if (trace_frame == NULL) /* Cease debugging any trace buffers. */ |
| { |
| traceframe_fun = 0; |
| traceframe_sal.pc = traceframe_sal.line = 0; |
| traceframe_sal.symtab = NULL; |
| clear_internalvar (lookup_internalvar ("trace_func")); |
| clear_internalvar (lookup_internalvar ("trace_file")); |
| set_internalvar_integer (lookup_internalvar ("trace_line"), -1); |
| return; |
| } |
| |
| /* Save as globals for internal use. */ |
| trace_pc = get_frame_pc (trace_frame); |
| traceframe_sal = find_pc_line (trace_pc, 0); |
| traceframe_fun = find_pc_function (trace_pc); |
| |
| /* Save linenumber as "$trace_line", a debugger variable visible to |
| users. */ |
| set_internalvar_integer (lookup_internalvar ("trace_line"), |
| traceframe_sal.line); |
| |
| /* Save func name as "$trace_func", a debugger variable visible to |
| users. */ |
| if (traceframe_fun == NULL |
| || SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL) |
| clear_internalvar (lookup_internalvar ("trace_func")); |
| else |
| set_internalvar_string (lookup_internalvar ("trace_func"), |
| SYMBOL_LINKAGE_NAME (traceframe_fun)); |
| |
| /* Save file name as "$trace_file", a debugger variable visible to |
| users. */ |
| if (traceframe_sal.symtab == NULL |
| || traceframe_sal.symtab->filename == NULL) |
| clear_internalvar (lookup_internalvar ("trace_file")); |
| else |
| set_internalvar_string (lookup_internalvar ("trace_file"), |
| traceframe_sal.symtab->filename); |
| } |
| |
| /* Create a new trace state variable with the given name. */ |
| |
| struct trace_state_variable * |
| create_trace_state_variable (const char *name) |
| { |
| struct trace_state_variable tsv; |
| |
| memset (&tsv, 0, sizeof (tsv)); |
| tsv.name = xstrdup (name); |
| tsv.number = next_tsv_number++; |
| return VEC_safe_push (tsv_s, tvariables, &tsv); |
| } |
| |
| /* Look for a trace state variable of the given name. */ |
| |
| struct trace_state_variable * |
| find_trace_state_variable (const char *name) |
| { |
| struct trace_state_variable *tsv; |
| int ix; |
| |
| for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| if (strcmp (name, tsv->name) == 0) |
| return tsv; |
| |
| return NULL; |
| } |
| |
| void |
| delete_trace_state_variable (const char *name) |
| { |
| struct trace_state_variable *tsv; |
| int ix; |
| |
| for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| if (strcmp (name, tsv->name) == 0) |
| { |
| xfree ((void *)tsv->name); |
| VEC_unordered_remove (tsv_s, tvariables, ix); |
| return; |
| } |
| |
| warning (_("No trace variable named \"$%s\", not deleting"), name); |
| } |
| |
| /* The 'tvariable' command collects a name and optional expression to |
| evaluate into an initial value. */ |
| |
| void |
| trace_variable_command (char *args, int from_tty) |
| { |
| struct expression *expr; |
| struct cleanup *old_chain; |
| struct internalvar *intvar = NULL; |
| LONGEST initval = 0; |
| struct trace_state_variable *tsv; |
| |
| if (!args || !*args) |
| error_no_arg (_("trace state variable name")); |
| |
| /* All the possible valid arguments are expressions. */ |
| expr = parse_expression (args); |
| old_chain = make_cleanup (free_current_contents, &expr); |
| |
| if (expr->nelts == 0) |
| error (_("No expression?")); |
| |
| /* Only allow two syntaxes; "$name" and "$name=value". */ |
| if (expr->elts[0].opcode == OP_INTERNALVAR) |
| { |
| intvar = expr->elts[1].internalvar; |
| } |
| else if (expr->elts[0].opcode == BINOP_ASSIGN |
| && expr->elts[1].opcode == OP_INTERNALVAR) |
| { |
| intvar = expr->elts[2].internalvar; |
| initval = value_as_long (evaluate_subexpression_type (expr, 4)); |
| } |
| else |
| error (_("Syntax must be $NAME [ = EXPR ]")); |
| |
| if (!intvar) |
| error (_("No name given")); |
| |
| if (strlen (internalvar_name (intvar)) <= 0) |
| error (_("Must supply a non-empty variable name")); |
| |
| /* If the variable already exists, just change its initial value. */ |
| tsv = find_trace_state_variable (internalvar_name (intvar)); |
| if (tsv) |
| { |
| tsv->initial_value = initval; |
| printf_filtered (_("Trace state variable $%s now has initial value %s.\n"), |
| tsv->name, plongest (tsv->initial_value)); |
| return; |
| } |
| |
| /* Create a new variable. */ |
| tsv = create_trace_state_variable (internalvar_name (intvar)); |
| tsv->initial_value = initval; |
| |
| printf_filtered (_("Trace state variable $%s created, with initial value %s.\n"), |
| tsv->name, plongest (tsv->initial_value)); |
| |
| do_cleanups (old_chain); |
| } |
| |
| void |
| delete_trace_variable_command (char *args, int from_tty) |
| { |
| int i, ix; |
| char **argv; |
| struct cleanup *back_to; |
| struct trace_state_variable *tsv; |
| |
| if (args == NULL) |
| { |
| if (query (_("Delete all trace state variables? "))) |
| VEC_free (tsv_s, tvariables); |
| dont_repeat (); |
| return; |
| } |
| |
| argv = gdb_buildargv (args); |
| back_to = make_cleanup_freeargv (argv); |
| |
| for (i = 0; argv[i] != NULL; i++) |
| { |
| if (*argv[i] == '$') |
| delete_trace_state_variable (argv[i] + 1); |
| else |
| warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv[i]); |
| } |
| |
| do_cleanups (back_to); |
| |
| dont_repeat (); |
| } |
| |
| void |
| tvariables_info_1 (void) |
| { |
| struct trace_state_variable *tsv; |
| int ix; |
| int count = 0; |
| struct cleanup *back_to; |
| |
| if (VEC_length (tsv_s, tvariables) == 0 && !ui_out_is_mi_like_p (uiout)) |
| { |
| printf_filtered (_("No trace state variables.\n")); |
| return; |
| } |
| |
| /* Try to acquire values from the target. */ |
| for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix, ++count) |
| tsv->value_known = target_get_trace_state_variable_value (tsv->number, |
| &(tsv->value)); |
| |
| back_to = make_cleanup_ui_out_table_begin_end (uiout, 3, |
| count, "trace-variables"); |
| ui_out_table_header (uiout, 15, ui_left, "name", "Name"); |
| ui_out_table_header (uiout, 11, ui_left, "initial", "Initial"); |
| ui_out_table_header (uiout, 11, ui_left, "current", "Current"); |
| |
| ui_out_table_body (uiout); |
| |
| for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| { |
| struct cleanup *back_to2; |
| char *c; |
| char *name; |
| |
| back_to2 = make_cleanup_ui_out_tuple_begin_end (uiout, "variable"); |
| |
| name = concat ("$", tsv->name, NULL); |
| make_cleanup (xfree, name); |
| ui_out_field_string (uiout, "name", name); |
| ui_out_field_string (uiout, "initial", plongest (tsv->initial_value)); |
| |
| if (tsv->value_known) |
| c = plongest (tsv->value); |
| else if (ui_out_is_mi_like_p (uiout)) |
| /* For MI, we prefer not to use magic string constants, but rather |
| omit the field completely. The difference between unknown and |
| undefined does not seem important enough to represent. */ |
| c = NULL; |
| else if (current_trace_status ()->running || traceframe_number >= 0) |
| /* The value is/was defined, but we don't have it. */ |
| c = "<unknown>"; |
| else |
| /* It is not meaningful to ask about the value. */ |
| c = "<undefined>"; |
| if (c) |
| ui_out_field_string (uiout, "current", c); |
| ui_out_text (uiout, "\n"); |
| |
| do_cleanups (back_to2); |
| } |
| |
| do_cleanups (back_to); |
| } |
| |
| /* List all the trace state variables. */ |
| |
| static void |
| tvariables_info (char *args, int from_tty) |
| { |
| tvariables_info_1 (); |
| } |
| |
| /* Stash definitions of tsvs into the given file. */ |
| |
| void |
| save_trace_state_variables (struct ui_file *fp) |
| { |
| struct trace_state_variable *tsv; |
| int ix; |
| |
| for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| { |
| fprintf_unfiltered (fp, "tvariable $%s", tsv->name); |
| if (tsv->initial_value) |
| fprintf_unfiltered (fp, " = %s", plongest (tsv->initial_value)); |
| fprintf_unfiltered (fp, "\n"); |
| } |
| } |
| |
| /* ACTIONS functions: */ |
| |
| /* The three functions: |
| collect_pseudocommand, |
| while_stepping_pseudocommand, and |
| end_actions_pseudocommand |
| are placeholders for "commands" that are actually ONLY to be used |
| within a tracepoint action list. If the actual function is ever called, |
| it means that somebody issued the "command" at the top level, |
| which is always an error. */ |
| |
| void |
| end_actions_pseudocommand (char *args, int from_tty) |
| { |
| error (_("This command cannot be used at the top level.")); |
| } |
| |
| void |
| while_stepping_pseudocommand (char *args, int from_tty) |
| { |
| error (_("This command can only be used in a tracepoint actions list.")); |
| } |
| |
| static void |
| collect_pseudocommand (char *args, int from_tty) |
| { |
| error (_("This command can only be used in a tracepoint actions list.")); |
| } |
| |
| static void |
| 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 */ |
| } |
| |
| /* worker function */ |
| enum actionline_type |
| 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; |
| |
| /* if EOF is typed, *line is NULL */ |
| if (*line == NULL) |
| return END; |
| |
| for (p = *line; isspace ((int) *p);) |
| p++; |
| |
| /* Symbol lookup etc. */ |
| if (*p == '\0') /* empty line: just prompt for another line. */ |
| return BADLINE; |
| |
| if (*p == '#') /* comment line */ |
| return GENERIC; |
| |
| c = lookup_cmd (&p, cmdlist, "", -1, 1); |
| if (c == 0) |
| { |
| warning (_("'%s' is not an action that I know, or is ambiguous."), |
| p); |
| return BADLINE; |
| } |
| |
| if (cmd_cfunc_eq (c, collect_pseudocommand)) |
| { |
| struct agent_expr *aexpr; |
| struct agent_reqs areqs; |
| |
| 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) |
| { |
| warning (_("constant %s (value %ld) will not be collected."), |
| SYMBOL_PRINT_NAME (exp->elts[2].symbol), |
| SYMBOL_VALUE (exp->elts[2].symbol)); |
| return BADLINE; |
| } |
| else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT) |
| { |
| warning (_("%s is optimized away and cannot be collected."), |
| SYMBOL_PRINT_NAME (exp->elts[2].symbol)); |
| return BADLINE; |
| } |
| } |
| |
| /* 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 too complicated, try simplifying")); |
| |
| ax_reqs (aexpr, &areqs); |
| (void) make_cleanup (xfree, areqs.reg_mask); |
| |
| if (areqs.flaw != agent_flaw_none) |
| error (_("malformed expression")); |
| |
| if (areqs.min_height < 0) |
| error (_("gdb: Internal error: expression has min height < 0")); |
| |
| if (areqs.max_height > 20) |
| error (_("expression too complicated, try simplifying")); |
| |
| do_cleanups (old_chain); |
| } |
| } |
| while (p && *p++ == ','); |
| return GENERIC; |
| } |
| else if (cmd_cfunc_eq (c, teval_pseudocommand)) |
| { |
| struct agent_expr *aexpr; |
| |
| 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 too complicated, try simplifying")); |
| |
| do_cleanups (old_chain); |
| } |
| } |
| while (p && *p++ == ','); |
| return GENERIC; |
| } |
| 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 (_("'%s': bad step-count."), *line); |
| } |
| return STEPPING; |
| } |
| else if (cmd_cfunc_eq (c, end_actions_pseudocommand)) |
| return END; |
| 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); |
| if (areqs.flaw != agent_flaw_none) |
| error (_("malformed expression")); |
| |
| if (areqs.min_height < 0) |
| error (_("gdb: Internal error: expression has min height < 0")); |
| if (areqs.max_height > 20) |
| error (_("expression too complicated, try simplifying")); |
| |
| 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); |
| if (areqs.flaw != agent_flaw_none) |
| error (_("malformed expression")); |
| |
| if (areqs.min_height < 0) |
| error (_("gdb: Internal error: expression has min height < 0")); |
| if (areqs.max_height > 20) |
| error (_("expression too complicated, try simplifying")); |
| |
| 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); |
| if (areqs.flaw != agent_flaw_none) |
| error (_("malformed expression")); |
| |
| if (areqs.min_height < 0) |
| error (_("gdb: Internal error: expression has min height < 0")); |
| if (areqs.max_height > 20) |
| error (_("expression too complicated, try simplifying")); |
| |
| 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 = t->commands->commands; |
| |
| /* 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; |
| enum actionline_type linetype; |
| |
| default_collect_line = xstrprintf ("collect %s", default_collect); |
| make_cleanup (xfree, default_collect_line); |
| |
| line = default_collect_line; |
| linetype = validate_actionline (&line, t); |
| if (linetype != BADLINE) |
| { |
| default_collect_action = xmalloc (sizeof (struct command_line)); |
| make_cleanup (xfree, default_collect_action); |
| default_collect_action->next = t->commands->commands; |
| 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. */ |
| |
| start_tracing (); |
| } |
| |
| /* tstop command */ |
| static void |
| trace_stop_command (char *args, int from_tty) |
| { |
| 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")); |
| if (disconnected_tracing) |
| printf_filtered (_("Trace will continue if GDB disconnects.\n")); |
| else |
| printf_filtered (_("Trace will stop if GDB disconnects.\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); |
| } |
| |
| /* 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 ((int) ts->traceframe_count != -1) |
| ui_out_field_int (uiout, "frames", ts->traceframe_count); |
| if ((int) ts->buffer_size != -1) |
| ui_out_field_int (uiout, "buffer-size", (int) ts->buffer_size); |
| if ((int) ts->buffer_free != -1) |
| ui_out_field_int (uiout, "buffer-free", (int) ts->buffer_free); |
| } |
| |
| |
| void |
| disconnect_or_stop_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 (current_trace_status ()->running && from_tty) |
| { |
| int cont = query (_("Trace is running. Continue tracing after detach? ")); |
| /* Note that we send the query result without affecting the |
| user's setting of disconnected_tracing, so that the answer is |
| a one-time-only. */ |
| send_disconnected_tracing_value (cont); |
| |
| /* Also ensure that we do the equivalent of a tstop command if |
| tracing is not to continue after the detach. */ |
| if (!cont) |
| stop_tracing (); |
| } |
| |
| /* 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 = ','; |
| } |
| |
| /* tdump command */ |
| static void |
| trace_dump_command (char *args, int from_tty) |
| { |
| struct regcache *regcache; |
| struct gdbarch *gdbarch; |
| struct breakpoint *t; |
| struct command_line *action; |
| char *action_exp, *next_comma; |
| struct cleanup *old_cleanups; |
| int stepping_actions = 0; |
| int stepping_frame = 0; |
| struct bp_location *loc; |
| |
| 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); |
| |
| old_cleanups = make_cleanup (null_cleanup, NULL); |
| |
| 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 (); |
| gdbarch = get_regcache_arch (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; |
| |
| for (action = t->commands->commands; action; 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)) |
| stepping_actions = 1; |
| else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) |
| stepping_actions = 0; |
| 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 == ','); |
| } |
| } |
| } |
| discard_cleanups (old_cleanups); |
| } |
| |
| /* 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; |
| struct uploaded_string *cmd; |
| 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); |
| 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; a < utp->numactions; ++a) |
| fprintf (fp, "tp A%x:%s:%s\n", |
| utp->number, phex_nz (utp->addr, sizeof (utp->addr)), |
| utp->actions[a]); |
| for (a = 0; a < utp->num_step_actions; ++a) |
| fprintf (fp, "tp S%x:%s:%s\n", |
| utp->number, phex_nz (utp->addr, sizeof (utp->addr)), |
| utp->step_actions[a]); |
| 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 (cmd = utp->cmd_strings; cmd; cmd = cmd->next) |
| { |
| encode_source_string (utp->number, utp->addr, "cmd", cmd->str, |
| 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->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; |
| |
| /* 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; |
| |
| 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[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 |
| { |
| /* 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); |
| utp->actions[utp->numactions++] = xstrdup (p); |
| } |
| else if (piece == 'S') |
| { |
| utp = get_uploaded_tp (num, addr, utpp); |
| utp->step_actions[utp->num_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) |
| { |
| /* FIXME consider using a vector? */ |
| struct uploaded_string *last, *newlast; |
| newlast = (struct uploaded_string *) xmalloc (sizeof (struct uploaded_string)); |
| newlast->str = xstrdup (buf); |
| newlast->next = NULL; |
| if (utp->cmd_strings) |
| { |
| for (last = utp->cmd_strings; last->next; last = last->next) |
| ; |
| last->next = newlast; |
| } |
| else |
| utp->cmd_strings = newlast; |
| } |
| } |
| 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; |
| 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; |
| } |
| } |
| } |
| |
| 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; |
| 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 (maddr <= offset && (offset + len) <= (maddr + mlen)) |
| { |
| gotten = read (trace_fd, readbuf, mlen); |
| if (gotten < 0) |
| perror_with_name (trace_filename); |
| else if (gotten < mlen) |
| error (_("Premature end of file qwhile reading trace file")); |
| |
| return mlen; |
| } |
| 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; |
| } |
| } |
| /* 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_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_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); |
| } |