diff options
Diffstat (limited to 'gnu/usr.bin/binutils/gdb/tracepoint.c')
| -rw-r--r-- | gnu/usr.bin/binutils/gdb/tracepoint.c | 2811 |
1 files changed, 2811 insertions, 0 deletions
diff --git a/gnu/usr.bin/binutils/gdb/tracepoint.c b/gnu/usr.bin/binutils/gdb/tracepoint.c new file mode 100644 index 00000000000..39c6877c2a8 --- /dev/null +++ b/gnu/usr.bin/binutils/gdb/tracepoint.c @@ -0,0 +1,2811 @@ +/* Tracing functionality for remote targets in custom GDB protocol + + Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003 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 (*readline_begin_hook) (char *, ...); +extern char *(*readline_hook) (char *); +extern void (*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 = local_hex_string_custom (t->address + & (CORE_ADDR) 0xffffffff, + "08l"); + else + tmp = local_hex_string_custom (t->address, "016l"); + + 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 (readline_begin_hook) + (*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 (readline_end_hook) + (*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) + { + if (event_loop_p) + signal (STOP_SIGNAL, handle_stop_sig); + else + signal (STOP_SIGNAL, 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 (readline_hook && instream == NULL) + line = (*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 > DEPRECATED_REGISTER_RAW_SIZE (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_before_reloc (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 (trace_start_stop_hook) + 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 (trace_start_stop_hook) + 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) + { + int source_only; + + /* 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 ()))) + source_only = -1; + else + source_only = 1; + + print_stack_frame (deprecated_selected_frame, + frame_relative_level (deprecated_selected_frame), + source_only); + 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 (trace_find_hook) + 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; + } + 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); +} |