| /* Tracing functionality for remote targets in custom GDB protocol |
| |
| Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
| 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 2 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, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.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 "tracepoint.h" |
| #include "remote.h" |
| #include "linespec.h" |
| #include "regcache.h" |
| #include "completer.h" |
| #include "gdb-events.h" |
| #include "block.h" |
| #include "dictionary.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 |
| |
| /* 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 |
| |
| |
| extern void (*deprecated_readline_begin_hook) (char *, ...); |
| extern char *(*deprecated_readline_hook) (char *); |
| extern void (*deprecated_readline_end_hook) (void); |
| extern void x_command (char *, int); |
| extern int addressprint; /* Print machine addresses? */ |
| |
| /* 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: ======= */ |
| |
| /* Chain of all tracepoints defined. */ |
| struct tracepoint *tracepoint_chain; |
| |
| /* Number of last tracepoint made. */ |
| static int tracepoint_count; |
| |
| /* 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; |
| |
| /* ======= Important command functions: ======= */ |
| static void trace_command (char *, int); |
| static void tracepoints_info (char *, int); |
| static void delete_trace_command (char *, int); |
| static void enable_trace_command (char *, int); |
| static void disable_trace_command (char *, int); |
| static void trace_pass_command (char *, int); |
| 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 tracepoint_save_command (char *, int); |
| static void trace_dump_command (char *, int); |
| |
| /* support routines */ |
| static void trace_mention (struct tracepoint *); |
| |
| struct collection_list; |
| static void add_aexpr (struct collection_list *, struct agent_expr *); |
| static unsigned char *mem2hex (unsigned char *, unsigned char *, int); |
| static void add_register (struct collection_list *collection, |
| unsigned int regno); |
| static struct cleanup *make_cleanup_free_actions (struct tracepoint *t); |
| static void free_actions_list (char **actions_list); |
| static void free_actions_list_cleanup_wrapper (void *); |
| |
| extern void _initialize_tracepoint (void); |
| |
| /* Utility: returns true if "target remote" */ |
| static int |
| target_is_remote (void) |
| { |
| if (current_target.to_shortname && |
| strcmp (current_target.to_shortname, "remote") == 0) |
| return 1; |
| else |
| return 0; |
| } |
| |
| /* Utility: generate error from an incoming stub packet. */ |
| static void |
| trace_error (char *buf) |
| { |
| if (*buf++ != 'E') |
| return; /* not an error msg */ |
| switch (*buf) |
| { |
| case '1': /* malformed packet error */ |
| if (*++buf == '0') /* general case: */ |
| error ("tracepoint.c: error in outgoing packet."); |
| else |
| error ("tracepoint.c: error in outgoing packet at field #%ld.", |
| strtol (buf, NULL, 16)); |
| case '2': |
| error ("trace API error 0x%s.", ++buf); |
| default: |
| error ("Target returns error code '%s'.", buf); |
| } |
| } |
| |
| /* Utility: wait for reply from stub, while accepting "O" packets */ |
| static char * |
| remote_get_noisy_reply (char *buf, |
| long sizeof_buf) |
| { |
| do /* loop on reply from remote stub */ |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| getpkt (buf, sizeof_buf, 0); |
| if (buf[0] == 0) |
| error ("Target does not support this command."); |
| else if (buf[0] == 'E') |
| trace_error (buf); |
| else if (buf[0] == 'O' && |
| buf[1] != 'K') |
| remote_console_output (buf + 1); /* 'O' message from stub */ |
| else |
| return buf; /* here's the actual reply */ |
| } |
| while (1); |
| } |
| |
| /* Set tracepoint count to NUM. */ |
| static void |
| set_tracepoint_count (int num) |
| { |
| tracepoint_count = num; |
| set_internalvar (lookup_internalvar ("tpnum"), |
| value_from_longest (builtin_type_int, (LONGEST) num)); |
| } |
| |
| /* Set traceframe number to NUM. */ |
| static void |
| set_traceframe_num (int num) |
| { |
| traceframe_number = num; |
| set_internalvar (lookup_internalvar ("trace_frame"), |
| value_from_longest (builtin_type_int, (LONGEST) num)); |
| } |
| |
| /* Set tracepoint number to NUM. */ |
| static void |
| set_tracepoint_num (int num) |
| { |
| tracepoint_number = num; |
| set_internalvar (lookup_internalvar ("tracepoint"), |
| value_from_longest (builtin_type_int, (LONGEST) num)); |
| } |
| |
| /* Set externally visible debug variables for querying/printing |
| the traceframe context (line, function, file) */ |
| |
| static void |
| set_traceframe_context (CORE_ADDR trace_pc) |
| { |
| static struct type *func_string, *file_string; |
| static struct type *func_range, *file_range; |
| struct value *func_val; |
| struct value *file_val; |
| static struct type *charstar; |
| int len; |
| |
| if (charstar == (struct type *) NULL) |
| charstar = lookup_pointer_type (builtin_type_char); |
| |
| if (trace_pc == -1) /* cease debugging any trace buffers */ |
| { |
| traceframe_fun = 0; |
| traceframe_sal.pc = traceframe_sal.line = 0; |
| traceframe_sal.symtab = NULL; |
| set_internalvar (lookup_internalvar ("trace_func"), |
| value_from_pointer (charstar, (LONGEST) 0)); |
| set_internalvar (lookup_internalvar ("trace_file"), |
| value_from_pointer (charstar, (LONGEST) 0)); |
| set_internalvar (lookup_internalvar ("trace_line"), |
| value_from_longest (builtin_type_int, (LONGEST) - 1)); |
| return; |
| } |
| |
| /* save as globals for internal use */ |
| 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 (lookup_internalvar ("trace_line"), |
| value_from_longest (builtin_type_int, |
| (LONGEST) traceframe_sal.line)); |
| |
| /* save func name as "$trace_func", a debugger variable visible to users */ |
| if (traceframe_fun == NULL || |
| DEPRECATED_SYMBOL_NAME (traceframe_fun) == NULL) |
| set_internalvar (lookup_internalvar ("trace_func"), |
| value_from_pointer (charstar, (LONGEST) 0)); |
| else |
| { |
| len = strlen (DEPRECATED_SYMBOL_NAME (traceframe_fun)); |
| func_range = create_range_type (func_range, |
| builtin_type_int, 0, len - 1); |
| func_string = create_array_type (func_string, |
| builtin_type_char, func_range); |
| func_val = allocate_value (func_string); |
| VALUE_TYPE (func_val) = func_string; |
| memcpy (VALUE_CONTENTS_RAW (func_val), |
| DEPRECATED_SYMBOL_NAME (traceframe_fun), |
| len); |
| func_val->modifiable = 0; |
| set_internalvar (lookup_internalvar ("trace_func"), func_val); |
| } |
| |
| /* save file name as "$trace_file", a debugger variable visible to users */ |
| if (traceframe_sal.symtab == NULL || |
| traceframe_sal.symtab->filename == NULL) |
| set_internalvar (lookup_internalvar ("trace_file"), |
| value_from_pointer (charstar, (LONGEST) 0)); |
| else |
| { |
| len = strlen (traceframe_sal.symtab->filename); |
| file_range = create_range_type (file_range, |
| builtin_type_int, 0, len - 1); |
| file_string = create_array_type (file_string, |
| builtin_type_char, file_range); |
| file_val = allocate_value (file_string); |
| VALUE_TYPE (file_val) = file_string; |
| memcpy (VALUE_CONTENTS_RAW (file_val), |
| traceframe_sal.symtab->filename, |
| len); |
| file_val->modifiable = 0; |
| set_internalvar (lookup_internalvar ("trace_file"), file_val); |
| } |
| } |
| |
| /* Low level routine to set a tracepoint. |
| Returns the tracepoint object so caller can set other things. |
| Does not set the tracepoint number! |
| Does not print anything. |
| |
| ==> This routine should not be called if there is a chance of later |
| error(); otherwise it leaves a bogus tracepoint on the chain. Validate |
| your arguments BEFORE calling this routine! */ |
| |
| static struct tracepoint * |
| set_raw_tracepoint (struct symtab_and_line sal) |
| { |
| struct tracepoint *t, *tc; |
| struct cleanup *old_chain; |
| |
| t = (struct tracepoint *) xmalloc (sizeof (struct tracepoint)); |
| old_chain = make_cleanup (xfree, t); |
| memset (t, 0, sizeof (*t)); |
| t->address = sal.pc; |
| if (sal.symtab == NULL) |
| t->source_file = NULL; |
| else |
| t->source_file = savestring (sal.symtab->filename, |
| strlen (sal.symtab->filename)); |
| |
| t->section = sal.section; |
| t->language = current_language->la_language; |
| t->input_radix = input_radix; |
| t->line_number = sal.line; |
| t->enabled_p = 1; |
| t->next = 0; |
| t->step_count = 0; |
| t->pass_count = 0; |
| t->addr_string = NULL; |
| |
| /* Add this tracepoint to the end of the chain |
| so that a list of tracepoints will come out in order |
| of increasing numbers. */ |
| |
| tc = tracepoint_chain; |
| if (tc == 0) |
| tracepoint_chain = t; |
| else |
| { |
| while (tc->next) |
| tc = tc->next; |
| tc->next = t; |
| } |
| discard_cleanups (old_chain); |
| return t; |
| } |
| |
| /* Set a tracepoint according to ARG (function, linenum or *address) */ |
| static void |
| trace_command (char *arg, int from_tty) |
| { |
| char **canonical = (char **) NULL; |
| struct symtabs_and_lines sals; |
| struct symtab_and_line sal; |
| struct tracepoint *t; |
| char *addr_start = 0, *addr_end = 0; |
| int i; |
| |
| if (!arg || !*arg) |
| error ("trace command requires an argument"); |
| |
| if (from_tty && info_verbose) |
| printf_filtered ("TRACE %s\n", arg); |
| |
| addr_start = arg; |
| sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
| addr_end = arg; |
| if (!sals.nelts) |
| return; /* ??? Presumably decode_line_1 has already warned? */ |
| |
| /* Resolve all line numbers to PC's */ |
| for (i = 0; i < sals.nelts; i++) |
| resolve_sal_pc (&sals.sals[i]); |
| |
| /* Now set all the tracepoints. */ |
| for (i = 0; i < sals.nelts; i++) |
| { |
| sal = sals.sals[i]; |
| |
| t = set_raw_tracepoint (sal); |
| set_tracepoint_count (tracepoint_count + 1); |
| t->number = tracepoint_count; |
| |
| /* If a canonical line spec is needed use that instead of the |
| command string. */ |
| if (canonical != (char **) NULL && canonical[i] != NULL) |
| t->addr_string = canonical[i]; |
| else if (addr_start) |
| t->addr_string = savestring (addr_start, addr_end - addr_start); |
| |
| trace_mention (t); |
| } |
| |
| if (sals.nelts > 1) |
| { |
| printf_filtered ("Multiple tracepoints were set.\n"); |
| printf_filtered ("Use 'delete trace' to delete unwanted tracepoints.\n"); |
| } |
| } |
| |
| /* Tell the user we have just set a tracepoint TP. */ |
| |
| static void |
| trace_mention (struct tracepoint *tp) |
| { |
| printf_filtered ("Tracepoint %d", tp->number); |
| |
| if (addressprint || (tp->source_file == NULL)) |
| { |
| printf_filtered (" at "); |
| print_address_numeric (tp->address, 1, gdb_stdout); |
| } |
| if (tp->source_file) |
| printf_filtered (": file %s, line %d.", |
| tp->source_file, tp->line_number); |
| |
| printf_filtered ("\n"); |
| } |
| |
| /* Print information on tracepoint number TPNUM_EXP, or all if omitted. */ |
| |
| static void |
| tracepoints_info (char *tpnum_exp, int from_tty) |
| { |
| struct tracepoint *t; |
| struct action_line *action; |
| int found_a_tracepoint = 0; |
| char wrap_indent[80]; |
| struct symbol *sym; |
| int tpnum = -1; |
| |
| if (tpnum_exp) |
| tpnum = parse_and_eval_long (tpnum_exp); |
| |
| ALL_TRACEPOINTS (t) |
| if (tpnum == -1 || tpnum == t->number) |
| { |
| extern int addressprint; /* print machine addresses? */ |
| |
| if (!found_a_tracepoint++) |
| { |
| printf_filtered ("Num Enb "); |
| if (addressprint) |
| { |
| if (TARGET_ADDR_BIT <= 32) |
| printf_filtered ("Address "); |
| else |
| printf_filtered ("Address "); |
| } |
| printf_filtered ("PassC StepC What\n"); |
| } |
| strcpy (wrap_indent, " "); |
| if (addressprint) |
| { |
| if (TARGET_ADDR_BIT <= 32) |
| strcat (wrap_indent, " "); |
| else |
| strcat (wrap_indent, " "); |
| } |
| |
| printf_filtered ("%-3d %-3s ", t->number, |
| t->enabled_p ? "y" : "n"); |
| if (addressprint) |
| { |
| char *tmp; |
| |
| if (TARGET_ADDR_BIT <= 32) |
| tmp = hex_string_custom (t->address & (CORE_ADDR) 0xffffffff, |
| 8); |
| else |
| tmp = hex_string_custom (t->address, 16); |
| |
| printf_filtered ("%s ", tmp); |
| } |
| printf_filtered ("%-5d %-5ld ", t->pass_count, t->step_count); |
| |
| if (t->source_file) |
| { |
| sym = find_pc_sect_function (t->address, t->section); |
| if (sym) |
| { |
| fputs_filtered ("in ", gdb_stdout); |
| fputs_filtered (SYMBOL_PRINT_NAME (sym), gdb_stdout); |
| wrap_here (wrap_indent); |
| fputs_filtered (" at ", gdb_stdout); |
| } |
| fputs_filtered (t->source_file, gdb_stdout); |
| printf_filtered (":%d", t->line_number); |
| } |
| else |
| print_address_symbolic (t->address, gdb_stdout, demangle, " "); |
| |
| printf_filtered ("\n"); |
| if (t->actions) |
| { |
| printf_filtered (" Actions for tracepoint %d: \n", t->number); |
| for (action = t->actions; action; action = action->next) |
| { |
| printf_filtered ("\t%s\n", action->action); |
| } |
| } |
| } |
| if (!found_a_tracepoint) |
| { |
| if (tpnum == -1) |
| printf_filtered ("No tracepoints.\n"); |
| else |
| printf_filtered ("No tracepoint number %d.\n", tpnum); |
| } |
| } |
| |
| /* Optimization: the code to parse an enable, disable, or delete TP command |
| is virtually identical except for whether it performs an enable, disable, |
| or delete. Therefore I've combined them into one function with an opcode. |
| */ |
| enum tracepoint_opcode |
| { |
| enable_op, |
| disable_op, |
| delete_op |
| }; |
| |
| /* This function implements enable, disable and delete commands. */ |
| static void |
| tracepoint_operation (struct tracepoint *t, int from_tty, |
| enum tracepoint_opcode opcode) |
| { |
| struct tracepoint *t2; |
| |
| if (t == NULL) /* no tracepoint operand */ |
| return; |
| |
| switch (opcode) |
| { |
| case enable_op: |
| t->enabled_p = 1; |
| tracepoint_modify_event (t->number); |
| break; |
| case disable_op: |
| t->enabled_p = 0; |
| tracepoint_modify_event (t->number); |
| break; |
| case delete_op: |
| if (tracepoint_chain == t) |
| tracepoint_chain = t->next; |
| |
| ALL_TRACEPOINTS (t2) |
| if (t2->next == t) |
| { |
| tracepoint_delete_event (t2->number); |
| t2->next = t->next; |
| break; |
| } |
| |
| if (t->addr_string) |
| xfree (t->addr_string); |
| if (t->source_file) |
| xfree (t->source_file); |
| if (t->actions) |
| free_actions (t); |
| |
| xfree (t); |
| break; |
| } |
| } |
| |
| /* Utility: parse a tracepoint number and look it up in the list. |
| If MULTI_P is true, there might be a range of tracepoints in ARG. |
| if OPTIONAL_P is true, then if the argument is missing, the most |
| recent tracepoint (tracepoint_count) is returned. */ |
| struct tracepoint * |
| get_tracepoint_by_number (char **arg, int multi_p, int optional_p) |
| { |
| struct tracepoint *t; |
| int tpnum; |
| char *instring = arg == NULL ? NULL : *arg; |
| |
| if (arg == NULL || *arg == NULL || ! **arg) |
| { |
| if (optional_p) |
| tpnum = tracepoint_count; |
| else |
| error_no_arg ("tracepoint number"); |
| } |
| else |
| tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); |
| |
| if (tpnum <= 0) |
| { |
| if (instring && *instring) |
| printf_filtered ("bad tracepoint number at or near '%s'\n", instring); |
| else |
| printf_filtered ("Tracepoint argument missing and no previous tracepoint\n"); |
| return NULL; |
| } |
| |
| ALL_TRACEPOINTS (t) |
| if (t->number == tpnum) |
| { |
| return t; |
| } |
| |
| /* FIXME: if we are in the middle of a range we don't want to give |
| a message. The current interface to get_number_or_range doesn't |
| allow us to discover this. */ |
| printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
| return NULL; |
| } |
| |
| /* Utility: parse a list of tracepoint numbers, and call a func for each. */ |
| static void |
| map_args_over_tracepoints (char *args, int from_tty, |
| enum tracepoint_opcode opcode) |
| { |
| struct tracepoint *t, *tmp; |
| |
| if (args == 0 || *args == 0) /* do them all */ |
| ALL_TRACEPOINTS_SAFE (t, tmp) |
| tracepoint_operation (t, from_tty, opcode); |
| else |
| while (*args) |
| { |
| QUIT; /* give user option to bail out with ^C */ |
| t = get_tracepoint_by_number (&args, 1, 0); |
| tracepoint_operation (t, from_tty, opcode); |
| while (*args == ' ' || *args == '\t') |
| args++; |
| } |
| } |
| |
| /* The 'enable trace' command enables tracepoints. Not supported by all targets. */ |
| static void |
| enable_trace_command (char *args, int from_tty) |
| { |
| dont_repeat (); |
| map_args_over_tracepoints (args, from_tty, enable_op); |
| } |
| |
| /* The 'disable trace' command enables tracepoints. Not supported by all targets. */ |
| static void |
| disable_trace_command (char *args, int from_tty) |
| { |
| dont_repeat (); |
| map_args_over_tracepoints (args, from_tty, disable_op); |
| } |
| |
| /* Remove a tracepoint (or all if no argument) */ |
| static void |
| delete_trace_command (char *args, int from_tty) |
| { |
| dont_repeat (); |
| if (!args || !*args) /* No args implies all tracepoints; */ |
| if (from_tty) /* confirm only if from_tty... */ |
| if (tracepoint_chain) /* and if there are tracepoints to delete! */ |
| if (!query ("Delete all tracepoints? ")) |
| return; |
| |
| map_args_over_tracepoints (args, from_tty, delete_op); |
| } |
| |
| /* Set passcount for tracepoint. |
| |
| First command argument is passcount, second is tracepoint number. |
| If tracepoint number omitted, apply to most recently defined. |
| Also accepts special argument "all". */ |
| |
| static void |
| trace_pass_command (char *args, int from_tty) |
| { |
| struct tracepoint *t1 = (struct tracepoint *) -1, *t2; |
| unsigned int count; |
| int all = 0; |
| |
| if (args == 0 || *args == 0) |
| error ("passcount command requires an argument (count + optional TP num)"); |
| |
| count = strtoul (args, &args, 10); /* count comes first, then TP num */ |
| |
| while (*args && isspace ((int) *args)) |
| args++; |
| |
| if (*args && strncasecmp (args, "all", 3) == 0) |
| { |
| args += 3; /* skip special argument "all" */ |
| all = 1; |
| if (*args) |
| error ("Junk at end of arguments."); |
| } |
| else |
| t1 = get_tracepoint_by_number (&args, 1, 1); |
| |
| do |
| { |
| if (t1) |
| { |
| ALL_TRACEPOINTS (t2) |
| if (t1 == (struct tracepoint *) -1 || t1 == t2) |
| { |
| t2->pass_count = count; |
| tracepoint_modify_event (t2->number); |
| if (from_tty) |
| printf_filtered ("Setting tracepoint %d's passcount to %d\n", |
| t2->number, count); |
| } |
| if (! all && *args) |
| t1 = get_tracepoint_by_number (&args, 1, 0); |
| } |
| } |
| while (*args); |
| } |
| |
| /* ACTIONS functions: */ |
| |
| /* Prototypes for action-parsing utility commands */ |
| static void read_actions (struct tracepoint *); |
| |
| /* 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. */ |
| |
| static void |
| end_actions_pseudocommand (char *args, int from_tty) |
| { |
| error ("This command cannot be used at the top level."); |
| } |
| |
| static 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."); |
| } |
| |
| /* Enter a list of actions for a tracepoint. */ |
| static void |
| trace_actions_command (char *args, int from_tty) |
| { |
| struct tracepoint *t; |
| char tmpbuf[128]; |
| char *end_msg = "End with a line saying just \"end\"."; |
| |
| t = get_tracepoint_by_number (&args, 0, 1); |
| if (t) |
| { |
| sprintf (tmpbuf, "Enter actions for tracepoint %d, one per line.", |
| t->number); |
| |
| if (from_tty) |
| { |
| if (deprecated_readline_begin_hook) |
| (*deprecated_readline_begin_hook) ("%s %s\n", tmpbuf, end_msg); |
| else if (input_from_terminal_p ()) |
| printf_filtered ("%s\n%s\n", tmpbuf, end_msg); |
| } |
| |
| free_actions (t); |
| t->step_count = 0; /* read_actions may set this */ |
| read_actions (t); |
| |
| if (deprecated_readline_end_hook) |
| (*deprecated_readline_end_hook) (); |
| /* tracepoints_changed () */ |
| } |
| /* else just return */ |
| } |
| |
| /* worker function */ |
| static void |
| read_actions (struct tracepoint *t) |
| { |
| char *line; |
| char *prompt1 = "> ", *prompt2 = " > "; |
| char *prompt = prompt1; |
| enum actionline_type linetype; |
| extern FILE *instream; |
| struct action_line *next = NULL, *temp; |
| struct cleanup *old_chain; |
| |
| /* Control-C quits instantly if typed while in this loop |
| since it should not wait until the user types a newline. */ |
| immediate_quit++; |
| /* FIXME: kettenis/20010823: Something is wrong here. In this file |
| STOP_SIGNAL is never defined. So this code has been left out, at |
| least for quite a while now. Replacing STOP_SIGNAL with SIGTSTP |
| leads to compilation failures since the variable job_control |
| isn't declared. Leave this alone for now. */ |
| #ifdef STOP_SIGNAL |
| if (job_control) |
| signal (STOP_SIGNAL, handle_stop_sig); |
| #endif |
| old_chain = make_cleanup_free_actions (t); |
| while (1) |
| { |
| /* Make sure that all output has been output. Some machines may let |
| you get away with leaving out some of the gdb_flush, but not all. */ |
| wrap_here (""); |
| gdb_flush (gdb_stdout); |
| gdb_flush (gdb_stderr); |
| |
| if (deprecated_readline_hook && instream == NULL) |
| line = (*deprecated_readline_hook) (prompt); |
| else if (instream == stdin && ISATTY (instream)) |
| { |
| line = gdb_readline_wrapper (prompt); |
| if (line && *line) /* add it to command history */ |
| add_history (line); |
| } |
| else |
| line = gdb_readline (0); |
| |
| linetype = validate_actionline (&line, t); |
| if (linetype == BADLINE) |
| continue; /* already warned -- collect another line */ |
| |
| temp = xmalloc (sizeof (struct action_line)); |
| temp->next = NULL; |
| temp->action = line; |
| |
| if (next == NULL) /* first action for this tracepoint? */ |
| t->actions = next = temp; |
| else |
| { |
| next->next = temp; |
| next = temp; |
| } |
| |
| if (linetype == STEPPING) /* begin "while-stepping" */ |
| { |
| if (prompt == prompt2) |
| { |
| warning ("Already processing 'while-stepping'"); |
| continue; |
| } |
| else |
| prompt = prompt2; /* change prompt for stepping actions */ |
| } |
| else if (linetype == END) |
| { |
| if (prompt == prompt2) |
| { |
| prompt = prompt1; /* end of single-stepping actions */ |
| } |
| else |
| { /* end of actions */ |
| if (t->actions->next == NULL) |
| { |
| /* an "end" all by itself with no other actions means |
| this tracepoint has no actions. Discard empty list. */ |
| free_actions (t); |
| } |
| break; |
| } |
| } |
| } |
| #ifdef STOP_SIGNAL |
| if (job_control) |
| signal (STOP_SIGNAL, SIG_DFL); |
| #endif |
| immediate_quit--; |
| discard_cleanups (old_chain); |
| } |
| |
| /* worker function */ |
| enum actionline_type |
| validate_actionline (char **line, struct tracepoint *t) |
| { |
| struct cmd_list_element *c; |
| struct expression *exp = NULL; |
| struct cleanup *old_chain = NULL; |
| char *p; |
| |
| /* 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! */ |
| } |
| exp = parse_exp_1 (&p, block_for_pc (t->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.", |
| DEPRECATED_SYMBOL_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.", |
| DEPRECATED_SYMBOL_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 (t->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, 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) |
| { |
| warning ("'%s': bad step-count; command ignored.", *line); |
| return BADLINE; |
| } |
| return STEPPING; |
| } |
| else if (cmd_cfunc_eq (c, end_actions_pseudocommand)) |
| return END; |
| else |
| { |
| warning ("'%s' is not a supported tracepoint action.", *line); |
| return BADLINE; |
| } |
| } |
| |
| /* worker function */ |
| void |
| free_actions (struct tracepoint *t) |
| { |
| struct action_line *line, *next; |
| |
| for (line = t->actions; line; line = next) |
| { |
| next = line->next; |
| if (line->action) |
| xfree (line->action); |
| xfree (line); |
| } |
| t->actions = NULL; |
| } |
| |
| static void |
| do_free_actions_cleanup (void *t) |
| { |
| free_actions (t); |
| } |
| |
| static struct cleanup * |
| make_cleanup_free_actions (struct tracepoint *t) |
| { |
| return make_cleanup (do_free_actions_cleanup, t); |
| } |
| |
| struct memrange |
| { |
| int type; /* 0 for absolute memory range, else basereg number */ |
| bfd_signed_vma start; |
| bfd_signed_vma end; |
| }; |
| |
| struct collection_list |
| { |
| unsigned char regs_mask[8]; /* 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 == 0) |
| { |
| 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: 0 == memory, 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 != -1) /* 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, |
| long frame_regno, long frame_offset) |
| { |
| unsigned long len; |
| unsigned int reg; |
| bfd_signed_vma offset; |
| |
| len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))); |
| switch (SYMBOL_CLASS (sym)) |
| { |
| default: |
| printf_filtered ("%s: don't know symbol class %d\n", |
| DEPRECATED_SYMBOL_NAME (sym), SYMBOL_CLASS (sym)); |
| break; |
| case LOC_CONST: |
| printf_filtered ("constant %s (value %ld) will not be collected.\n", |
| DEPRECATED_SYMBOL_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", |
| DEPRECATED_SYMBOL_NAME (sym), len, tmp /* address */); |
| } |
| add_memrange (collect, -1, offset, len); /* 0 == memory */ |
| break; |
| case LOC_REGISTER: |
| case LOC_REGPARM: |
| reg = SYMBOL_VALUE (sym); |
| if (info_verbose) |
| printf_filtered ("LOC_REG[parm] %s: ", DEPRECATED_SYMBOL_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 (current_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", |
| DEPRECATED_SYMBOL_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 ", |
| DEPRECATED_SYMBOL_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 ", |
| DEPRECATED_SYMBOL_NAME (sym), len); |
| printf_vma (offset); |
| printf_filtered (" from reg %d\n", reg); |
| } |
| add_memrange (collect, reg, offset, len); |
| break; |
| case LOC_LOCAL: |
| case LOC_LOCAL_ARG: |
| reg = frame_regno; |
| offset = frame_offset + SYMBOL_VALUE (sym); |
| if (info_verbose) |
| { |
| printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ", |
| DEPRECATED_SYMBOL_NAME (sym), len); |
| printf_vma (offset); |
| printf_filtered (" from frame ptr reg %d\n", reg); |
| } |
| add_memrange (collect, reg, offset, len); |
| break; |
| case LOC_BASEREG: |
| case LOC_BASEREG_ARG: |
| reg = SYMBOL_BASEREG (sym); |
| offset = SYMBOL_VALUE (sym); |
| if (info_verbose) |
| { |
| printf_filtered ("LOC_BASEREG %s: collect %ld bytes at offset ", |
| DEPRECATED_SYMBOL_NAME (sym), len); |
| printf_vma (offset); |
| printf_filtered (" from basereg %d\n", reg); |
| } |
| add_memrange (collect, reg, offset, len); |
| break; |
| case LOC_UNRESOLVED: |
| printf_filtered ("Don't know LOC_UNRESOLVED %s\n", DEPRECATED_SYMBOL_NAME (sym)); |
| break; |
| case LOC_OPTIMIZED_OUT: |
| printf_filtered ("%s has been optimized out of existence.\n", |
| DEPRECATED_SYMBOL_NAME (sym)); |
| break; |
| } |
| } |
| |
| /* Add all locals (or args) symbols to collection list */ |
| static void |
| add_local_symbols (struct collection_list *collect, CORE_ADDR pc, |
| long frame_regno, long frame_offset, int type) |
| { |
| struct symbol *sym; |
| struct block *block; |
| struct dict_iterator iter; |
| int count = 0; |
| |
| block = block_for_pc (pc); |
| while (block != 0) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| ALL_BLOCK_SYMBOLS (block, iter, sym) |
| { |
| switch (SYMBOL_CLASS (sym)) |
| { |
| default: |
| warning ("don't know how to trace local symbol %s", |
| DEPRECATED_SYMBOL_NAME (sym)); |
| case LOC_LOCAL: |
| case LOC_STATIC: |
| case LOC_REGISTER: |
| case LOC_BASEREG: |
| if (type == 'L') /* collecting Locals */ |
| { |
| count++; |
| collect_symbol (collect, sym, frame_regno, frame_offset); |
| } |
| break; |
| case LOC_ARG: |
| case LOC_LOCAL_ARG: |
| case LOC_REF_ARG: |
| case LOC_REGPARM: |
| case LOC_REGPARM_ADDR: |
| case LOC_BASEREG_ARG: |
| if (type == 'A') /* collecting Arguments */ |
| { |
| count++; |
| collect_symbol (collect, sym, frame_regno, frame_offset); |
| } |
| } |
| } |
| if (BLOCK_FUNCTION (block)) |
| break; |
| else |
| block = BLOCK_SUPERBLOCK (block); |
| } |
| if (count == 0) |
| warning ("No %s found in scope.", type == 'L' ? "locals" : "args"); |
| } |
| |
| /* 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] = savestring (temp_buf, end - 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; |
| } |
| |
| sprintf (end, "M%X,%s,%lX", |
| list->list[i].type, |
| tmp2, |
| (long) (list->list[i].end - list->list[i].start)); |
| |
| count += strlen (end); |
| end += 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) |
| return NULL; |
| else |
| return *str_list; |
| } |
| |
| static void |
| free_actions_list_cleanup_wrapper (void *al) |
| { |
| free_actions_list (al); |
| } |
| |
| static void |
| free_actions_list (char **actions_list) |
| { |
| int ndx; |
| |
| if (actions_list == 0) |
| return; |
| |
| for (ndx = 0; actions_list[ndx]; ndx++) |
| xfree (actions_list[ndx]); |
| |
| xfree (actions_list); |
| } |
| |
| /* render all actions into gdb protocol */ |
| static void |
| encode_actions (struct tracepoint *t, char ***tdp_actions, |
| char ***stepping_actions) |
| { |
| static char tdp_buff[2048], step_buff[2048]; |
| char *action_exp; |
| struct expression *exp = NULL; |
| struct action_line *action; |
| int i; |
| struct value *tempval; |
| struct collection_list *collect; |
| struct cmd_list_element *cmd; |
| struct agent_expr *aexpr; |
| int frame_reg; |
| LONGEST frame_offset; |
| |
| |
| clear_collection_list (&tracepoint_list); |
| clear_collection_list (&stepping_list); |
| collect = &tracepoint_list; |
| |
| *tdp_actions = NULL; |
| *stepping_actions = NULL; |
| |
| TARGET_VIRTUAL_FRAME_POINTER (t->address, &frame_reg, &frame_offset); |
| |
| for (action = t->actions; action; action = action->next) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| action_exp = action->action; |
| while (isspace ((int) *action_exp)) |
| action_exp++; |
| |
| if (*action_exp == '#') /* comment line */ |
| return; |
| |
| 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 < NUM_REGS; i++) |
| add_register (collect, i); |
| action_exp = strchr (action_exp, ','); /* more? */ |
| } |
| else if (0 == strncasecmp ("$arg", action_exp, 4)) |
| { |
| add_local_symbols (collect, |
| t->address, |
| frame_reg, |
| frame_offset, |
| 'A'); |
| action_exp = strchr (action_exp, ','); /* more? */ |
| } |
| else if (0 == strncasecmp ("$loc", action_exp, 4)) |
| { |
| add_local_symbols (collect, |
| t->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 (t->address), 1); |
| old_chain = make_cleanup (free_current_contents, &exp); |
| |
| switch (exp->elts[0].opcode) |
| { |
| case OP_REGISTER: |
| i = exp->elts[1].longconst; |
| 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) + VALUE_OFFSET (tempval); |
| len = TYPE_LENGTH (check_typedef (exp->elts[1].type)); |
| add_memrange (collect, -1, addr, len); |
| break; |
| |
| case OP_VAR_VALUE: |
| collect_symbol (collect, |
| exp->elts[2].symbol, |
| frame_reg, |
| frame_offset); |
| break; |
| |
| default: /* full-fledged expression */ |
| aexpr = gen_trace_for_expr (t->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, while_stepping_pseudocommand)) |
| { |
| collect = &stepping_list; |
| } |
| else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) |
| { |
| if (collect == &stepping_list) /* end stepping actions */ |
| collect = &tracepoint_list; |
| else |
| break; /* end tracepoint actions */ |
| } |
| } /* for */ |
| 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); |
| } |
| |
| 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++; |
| } |
| |
| static char target_buf[2048]; |
| |
| /* Set "transparent" memory ranges |
| |
| Allow trace mechanism to treat text-like sections |
| (and perhaps all read-only sections) transparently, |
| i.e. don't reject memory requests from these address ranges |
| just because they haven't been collected. */ |
| |
| static void |
| remote_set_transparent_ranges (void) |
| { |
| extern bfd *exec_bfd; |
| asection *s; |
| bfd_size_type size; |
| bfd_vma lma; |
| int anysecs = 0; |
| |
| if (!exec_bfd) |
| return; /* no information to give. */ |
| |
| strcpy (target_buf, "QTro"); |
| for (s = exec_bfd->sections; s; s = s->next) |
| { |
| char tmp1[40], tmp2[40]; |
| |
| if ((s->flags & SEC_LOAD) == 0 || |
| /* (s->flags & SEC_CODE) == 0 || */ |
| (s->flags & SEC_READONLY) == 0) |
| continue; |
| |
| anysecs = 1; |
| lma = s->lma; |
| size = bfd_get_section_size (s); |
| sprintf_vma (tmp1, lma); |
| sprintf_vma (tmp2, lma + size); |
| sprintf (target_buf + strlen (target_buf), |
| ":%s,%s", tmp1, tmp2); |
| } |
| if (anysecs) |
| { |
| putpkt (target_buf); |
| getpkt (target_buf, sizeof (target_buf), 0); |
| } |
| } |
| |
| /* 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) |
| { /* STUB_COMM MOSTLY_IMPLEMENTED */ |
| struct tracepoint *t; |
| char buf[2048]; |
| char **tdp_actions; |
| char **stepping_actions; |
| int ndx; |
| struct cleanup *old_chain = NULL; |
| |
| dont_repeat (); /* like "run", dangerous to repeat accidentally */ |
| |
| if (target_is_remote ()) |
| { |
| putpkt ("QTinit"); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| if (strcmp (target_buf, "OK")) |
| error ("Target does not support this command."); |
| |
| ALL_TRACEPOINTS (t) |
| { |
| char tmp[40]; |
| |
| sprintf_vma (tmp, t->address); |
| sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number, tmp, /* address */ |
| t->enabled_p ? 'E' : 'D', |
| t->step_count, t->pass_count); |
| |
| if (t->actions) |
| strcat (buf, "-"); |
| putpkt (buf); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| if (strcmp (target_buf, "OK")) |
| error ("Target does not support tracepoints."); |
| |
| if (t->actions) |
| { |
| encode_actions (t, &tdp_actions, &stepping_actions); |
| old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
| tdp_actions); |
| (void) make_cleanup (free_actions_list_cleanup_wrapper, |
| stepping_actions); |
| |
| /* do_single_steps (t); */ |
| if (tdp_actions) |
| { |
| for (ndx = 0; tdp_actions[ndx]; ndx++) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| sprintf (buf, "QTDP:-%x:%s:%s%c", |
| t->number, tmp, /* address */ |
| tdp_actions[ndx], |
| ((tdp_actions[ndx + 1] || stepping_actions) |
| ? '-' : 0)); |
| putpkt (buf); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| if (strcmp (target_buf, "OK")) |
| error ("Error on target while setting tracepoints."); |
| } |
| } |
| if (stepping_actions) |
| { |
| for (ndx = 0; stepping_actions[ndx]; ndx++) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| sprintf (buf, "QTDP:-%x:%s:%s%s%s", |
| t->number, tmp, /* address */ |
| ((ndx == 0) ? "S" : ""), |
| stepping_actions[ndx], |
| (stepping_actions[ndx + 1] ? "-" : "")); |
| putpkt (buf); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| if (strcmp (target_buf, "OK")) |
| error ("Error on target while setting tracepoints."); |
| } |
| } |
| |
| do_cleanups (old_chain); |
| } |
| } |
| /* Tell target to treat text-like sections as transparent */ |
| remote_set_transparent_ranges (); |
| /* Now insert traps and begin collecting data */ |
| putpkt ("QTStart"); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| if (strcmp (target_buf, "OK")) |
| error ("Bogus reply from target: %s", target_buf); |
| set_traceframe_num (-1); /* all old traceframes invalidated */ |
| set_tracepoint_num (-1); |
| set_traceframe_context (-1); |
| trace_running_p = 1; |
| if (deprecated_trace_start_stop_hook) |
| deprecated_trace_start_stop_hook (1, from_tty); |
| |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* tstop command */ |
| static void |
| trace_stop_command (char *args, int from_tty) |
| { /* STUB_COMM IS_IMPLEMENTED */ |
| if (target_is_remote ()) |
| { |
| putpkt ("QTStop"); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| if (strcmp (target_buf, "OK")) |
| error ("Bogus reply from target: %s", target_buf); |
| trace_running_p = 0; |
| if (deprecated_trace_start_stop_hook) |
| deprecated_trace_start_stop_hook (0, from_tty); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| unsigned long trace_running_p; |
| |
| /* tstatus command */ |
| static void |
| trace_status_command (char *args, int from_tty) |
| { /* STUB_COMM IS_IMPLEMENTED */ |
| if (target_is_remote ()) |
| { |
| putpkt ("qTStatus"); |
| remote_get_noisy_reply (target_buf, sizeof (target_buf)); |
| |
| if (target_buf[0] != 'T' || |
| (target_buf[1] != '0' && target_buf[1] != '1')) |
| error ("Bogus reply from target: %s", target_buf); |
| |
| /* exported for use by the GUI */ |
| trace_running_p = (target_buf[1] == '1'); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* Worker function for the various flavors of the tfind command */ |
| static void |
| finish_tfind_command (char *msg, |
| long sizeof_msg, |
| int from_tty) |
| { |
| int target_frameno = -1, target_tracept = -1; |
| CORE_ADDR old_frame_addr; |
| struct symbol *old_func; |
| char *reply; |
| |
| old_frame_addr = get_frame_base (get_current_frame ()); |
| old_func = find_pc_function (read_pc ()); |
| |
| putpkt (msg); |
| reply = remote_get_noisy_reply (msg, sizeof_msg); |
| |
| while (reply && *reply) |
| switch (*reply) |
| { |
| case 'F': |
| if ((target_frameno = (int) strtol (++reply, &reply, 16)) == -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"); |
| /* The following will not recurse, since it's special-cased */ |
| trace_find_command ("-1", from_tty); |
| reply = NULL; /* break out of loop, |
| (avoid recursive nonsense) */ |
| } |
| } |
| break; |
| case 'T': |
| if ((target_tracept = (int) strtol (++reply, &reply, 16)) == -1) |
| error ("Target failed to find requested trace frame."); |
| break; |
| case 'O': /* "OK"? */ |
| if (reply[1] == 'K' && reply[2] == '\0') |
| reply += 2; |
| else |
| error ("Bogus reply from target: %s", reply); |
| break; |
| default: |
| error ("Bogus reply from target: %s", reply); |
| } |
| |
| flush_cached_frames (); |
| registers_changed (); |
| select_frame (get_current_frame ()); |
| set_traceframe_num (target_frameno); |
| set_tracepoint_num (target_tracept); |
| if (target_frameno == -1) |
| set_traceframe_context (-1); |
| else |
| set_traceframe_context (read_pc ()); |
| |
| if (from_tty) |
| { |
| 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. |
| |
| This determination is made by checking (1) whether the current |
| function has changed, and (2) whether the current FP has changed. |
| Hack: if the FP wasn't collected, either at the current or the |
| previous frame, assume that the FP has NOT changed. */ |
| |
| if (old_func == find_pc_function (read_pc ()) && |
| (old_frame_addr == 0 || |
| get_frame_base (get_current_frame ()) == 0 || |
| old_frame_addr == get_frame_base (get_current_frame ()))) |
| print_what = SRC_LINE; |
| else |
| print_what = SRC_AND_LOC; |
| |
| print_stack_frame (get_selected_frame (), 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) |
| { /* STUB_COMM PART_IMPLEMENTED */ |
| /* this should only be called with a numeric argument */ |
| int frameno = -1; |
| |
| if (target_is_remote ()) |
| { |
| if (deprecated_trace_find_hook) |
| deprecated_trace_find_hook (args, from_tty); |
| |
| 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; |
| } |
| else |
| frameno = parse_and_eval_long (args); |
| |
| if (frameno < -1) |
| error ("invalid input (%d is less than zero)", frameno); |
| |
| sprintf (target_buf, "QTFrame:%x", frameno); |
| finish_tfind_command (target_buf, sizeof (target_buf), from_tty); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* 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) |
| { /* STUB_COMM PART_IMPLEMENTED */ |
| CORE_ADDR pc; |
| char tmp[40]; |
| |
| if (target_is_remote ()) |
| { |
| if (args == 0 || *args == 0) |
| pc = read_pc (); /* default is current pc */ |
| else |
| pc = parse_and_eval_address (args); |
| |
| sprintf_vma (tmp, pc); |
| sprintf (target_buf, "QTFrame:pc:%s", tmp); |
| finish_tfind_command (target_buf, sizeof (target_buf), from_tty); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* tfind tracepoint command */ |
| static void |
| trace_find_tracepoint_command (char *args, int from_tty) |
| { /* STUB_COMM PART_IMPLEMENTED */ |
| int tdp; |
| |
| if (target_is_remote ()) |
| { |
| 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); |
| |
| sprintf (target_buf, "QTFrame:tdp:%x", tdp); |
| finish_tfind_command (target_buf, sizeof (target_buf), from_tty); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* 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) |
| { /* STUB_COMM PART_IMPLEMENTED */ |
| 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 (target_is_remote ()) |
| { |
| 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) |
| { |
| printf_filtered ("TFIND: No line number information available"); |
| if (sal.pc != 0) |
| { |
| /* This is useful for "info line *0x7f34". If we can't tell the |
| user about a source line, at least let them have the symbolic |
| address. */ |
| printf_filtered (" for address "); |
| wrap_here (" "); |
| print_address (sal.pc, gdb_stdout); |
| printf_filtered (";\n -- will attempt to find by PC. \n"); |
| } |
| else |
| { |
| printf_filtered (".\n"); |
| return; /* no line, no PC; what can we do? */ |
| } |
| } |
| else 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 (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\".\n", |
| sal.line, sal.symtab->filename); |
| |
| sprintf_vma (startpc_str, start_pc); |
| sprintf_vma (endpc_str, end_pc - 1); |
| if (args && *args) /* find within range of stated line */ |
| sprintf (target_buf, "QTFrame:range:%s:%s", startpc_str, endpc_str); |
| else /* find OUTSIDE OF range of CURRENT line */ |
| sprintf (target_buf, "QTFrame:outside:%s:%s", startpc_str, endpc_str); |
| finish_tfind_command (target_buf, sizeof (target_buf), from_tty); |
| do_cleanups (old_chain); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* 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 (target_is_remote ()) |
| { |
| 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; /* ??? */ |
| } |
| |
| sprintf_vma (start_str, start); |
| sprintf_vma (stop_str, stop); |
| sprintf (target_buf, "QTFrame:range:%s:%s", start_str, stop_str); |
| finish_tfind_command (target_buf, sizeof (target_buf), from_tty); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* 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 (target_is_remote ()) |
| { |
| 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; /* ??? */ |
| } |
| |
| sprintf_vma (start_str, start); |
| sprintf_vma (stop_str, stop); |
| sprintf (target_buf, "QTFrame:outside:%s:%s", start_str, stop_str); |
| finish_tfind_command (target_buf, sizeof (target_buf), from_tty); |
| } |
| else |
| error ("Trace can only be run on remote targets."); |
| } |
| |
| /* save-tracepoints command */ |
| static void |
| tracepoint_save_command (char *args, int from_tty) |
| { |
| struct tracepoint *tp; |
| struct action_line *line; |
| FILE *fp; |
| char *i1 = " ", *i2 = " "; |
| char *indent, *actionline, *pathname; |
| char tmp[40]; |
| |
| if (args == 0 || *args == 0) |
| error ("Argument required (file name in which to save tracepoints"); |
| |
| if (tracepoint_chain == 0) |
| { |
| warning ("save-tracepoints: no tracepoints to save.\n"); |
| return; |
| } |
| |
| pathname = tilde_expand (args); |
| if (!(fp = fopen (pathname, "w"))) |
| error ("Unable to open file '%s' for saving tracepoints (%s)", |
| args, safe_strerror (errno)); |
| xfree (pathname); |
| |
| ALL_TRACEPOINTS (tp) |
| { |
| if (tp->addr_string) |
| fprintf (fp, "trace %s\n", tp->addr_string); |
| else |
| { |
| sprintf_vma (tmp, tp->address); |
| fprintf (fp, "trace *0x%s\n", tmp); |
| } |
| |
| if (tp->pass_count) |
| fprintf (fp, " passcount %d\n", tp->pass_count); |
| |
| if (tp->actions) |
| { |
| fprintf (fp, " actions\n"); |
| indent = i1; |
| for (line = tp->actions; line; line = line->next) |
| { |
| struct cmd_list_element *cmd; |
| |
| QUIT; /* allow user to bail out with ^C */ |
| actionline = line->action; |
| while (isspace ((int) *actionline)) |
| actionline++; |
| |
| fprintf (fp, "%s%s\n", indent, actionline); |
| if (*actionline != '#') /* skip for comment lines */ |
| { |
| cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); |
| if (cmd == 0) |
| error ("Bad action list item: %s", actionline); |
| if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) |
| indent = i2; |
| else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) |
| indent = i1; |
| } |
| } |
| } |
| } |
| fclose (fp); |
| if (from_tty) |
| printf_filtered ("Tracepoints saved to file '%s'.\n", args); |
| return; |
| } |
| |
| /* 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; |
| |
| 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 = DEPRECATED_SYMBOL_NAME (sym); |
| if (symname == NULL || *symname == '\0') |
| continue; /* probably botched, certainly useless */ |
| |
| 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 "); |
| print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), |
| 1, gdb_stdout); |
| break; |
| case LOC_REGISTER: |
| printf_filtered ("a local variable in register $%s", |
| REGISTER_NAME (SYMBOL_VALUE (sym))); |
| break; |
| case LOC_ARG: |
| case LOC_LOCAL_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: |
| printf_filtered ("an argument in register $%s", |
| REGISTER_NAME (SYMBOL_VALUE (sym))); |
| break; |
| case LOC_REGPARM_ADDR: |
| printf_filtered ("the address of an argument, in register $%s", |
| REGISTER_NAME (SYMBOL_VALUE (sym))); |
| break; |
| case LOC_TYPEDEF: |
| printf_filtered ("a typedef.\n"); |
| continue; |
| case LOC_LABEL: |
| printf_filtered ("a label at address "); |
| print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), |
| 1, gdb_stdout); |
| break; |
| case LOC_BLOCK: |
| printf_filtered ("a function at address "); |
| print_address_numeric (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), |
| 1, gdb_stdout); |
| break; |
| case LOC_BASEREG: |
| printf_filtered ("a variable at offset %ld from register $%s", |
| SYMBOL_VALUE (sym), |
| REGISTER_NAME (SYMBOL_BASEREG (sym))); |
| break; |
| case LOC_BASEREG_ARG: |
| printf_filtered ("an argument at offset %ld from register $%s", |
| SYMBOL_VALUE (sym), |
| REGISTER_NAME (SYMBOL_BASEREG (sym))); |
| break; |
| case LOC_UNRESOLVED: |
| msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), |
| NULL, NULL); |
| if (msym == NULL) |
| printf_filtered ("Unresolved Static"); |
| else |
| { |
| printf_filtered ("static storage at address "); |
| print_address_numeric (SYMBOL_VALUE_ADDRESS (msym), 1, |
| gdb_stdout); |
| } |
| break; |
| case LOC_OPTIMIZED_OUT: |
| printf_filtered ("optimized out.\n"); |
| continue; |
| case LOC_HP_THREAD_LOCAL_STATIC: |
| printf_filtered ("HP thread local static "); |
| break; |
| case LOC_INDIRECT: |
| printf_filtered ("extern (local indirect) at address "); |
| print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), |
| 1, gdb_stdout); |
| break; |
| case LOC_COMPUTED: |
| case LOC_COMPUTED_ARG: |
| SYMBOL_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 tracepoint *t; |
| struct action_line *action; |
| char *action_exp, *next_comma; |
| struct cleanup *old_cleanups; |
| int stepping_actions = 0; |
| int stepping_frame = 0; |
| |
| if (!target_is_remote ()) |
| { |
| error ("Trace can only be run on remote targets."); |
| return; |
| } |
| |
| if (tracepoint_number == -1) |
| { |
| warning ("No current trace frame."); |
| return; |
| } |
| |
| ALL_TRACEPOINTS (t) |
| if (t->number == tracepoint_number) |
| break; |
| |
| 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. */ |
| |
| stepping_frame = (t->address != (read_pc () - DECR_PC_AFTER_BREAK)); |
| |
| for (action = t->actions; action; action = action->next) |
| { |
| struct cmd_list_element *cmd; |
| |
| QUIT; /* allow user to bail out with ^C */ |
| action_exp = action->action; |
| 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); |
| } |
| |
| /* 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 unsigned char * |
| mem2hex (unsigned char *mem, unsigned char *buf, int count) |
| { |
| unsigned char 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; |
| } |
| |
| |
| /* module initialization */ |
| void |
| _initialize_tracepoint (void) |
| { |
| struct cmd_list_element *c; |
| |
| tracepoint_chain = 0; |
| tracepoint_count = 0; |
| traceframe_number = -1; |
| tracepoint_number = -1; |
| |
| set_internalvar (lookup_internalvar ("tpnum"), |
| value_from_longest (builtin_type_int, (LONGEST) 0)); |
| set_internalvar (lookup_internalvar ("trace_frame"), |
| value_from_longest (builtin_type_int, (LONGEST) - 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_info ("tracepoints", tracepoints_info, |
| "Status of tracepoints, or tracepoint number NUMBER.\n\ |
| Convenience variable \"$tpnum\" contains the number of the\n\ |
| last tracepoint set."); |
| |
| add_info_alias ("tp", "tracepoints", 1); |
| |
| c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, |
| "Save current tracepoint definitions as a script.\n\ |
| Use the 'source' command in another debug session to restore them."); |
| set_cmd_completer (c, filename_completer); |
| |
| add_com ("tdump", class_trace, trace_dump_command, |
| "Print everything collected at the current tracepoint."); |
| |
| add_prefix_cmd ("tfind", class_trace, trace_find_command, |
| "Select a trace frame;\n\ |
| No argument means forward by one frame; '-' meand 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.\nUsage: 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.\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 ("passcount", class_trace, trace_pass_command, |
| "Set the passcount for a tracepoint.\n\ |
| The trace will end when the tracepoint has been passed 'count' times.\n\ |
| Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ |
| if TPNUM is omitted, passcount refers to the last tracepoint defined."); |
| |
| 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 ("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."); |
| |
| add_cmd ("tracepoints", class_trace, delete_trace_command, |
| "Delete specified tracepoints.\n\ |
| Arguments are tracepoint numbers, separated by spaces.\n\ |
| No argument means delete all tracepoints.", |
| &deletelist); |
| |
| add_cmd ("tracepoints", class_trace, disable_trace_command, |
| "Disable specified tracepoints.\n\ |
| Arguments are tracepoint numbers, separated by spaces.\n\ |
| No argument means disable all tracepoints.", |
| &disablelist); |
| |
| add_cmd ("tracepoints", class_trace, enable_trace_command, |
| "Enable specified tracepoints.\n\ |
| Arguments are tracepoint numbers, separated by spaces.\n\ |
| No argument means enable all tracepoints.", |
| &enablelist); |
| |
| c = add_com ("trace", class_trace, trace_command, |
| "Set a tracepoint at a specified line or function or address.\n\ |
| Argument may be a line number, function name, or '*' plus an address.\n\ |
| For a line number or function, trace at the start of its code.\n\ |
| If an address is specified, trace at that exact address.\n\n\ |
| Do \"help tracepoints\" for info on other tracepoint commands."); |
| set_cmd_completer (c, location_completer); |
| |
| add_com_alias ("tp", "trace", class_alias, 0); |
| add_com_alias ("tr", "trace", class_alias, 1); |
| add_com_alias ("tra", "trace", class_alias, 1); |
| add_com_alias ("trac", "trace", class_alias, 1); |
| } |