| /* Tracing functionality for remote targets in custom GDB protocol |
| |
| Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| 2007, 2008, 2009 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "arch-utils.h" |
| #include "symtab.h" |
| #include "frame.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "gdbcmd.h" |
| #include "value.h" |
| #include "target.h" |
| #include "language.h" |
| #include "gdb_string.h" |
| #include "inferior.h" |
| #include "breakpoint.h" |
| #include "tracepoint.h" |
| #include "remote.h" |
| extern int remote_supports_cond_tracepoints (void); |
| #include "linespec.h" |
| #include "regcache.h" |
| #include "completer.h" |
| #include "block.h" |
| #include "dictionary.h" |
| #include "observer.h" |
| #include "user-regs.h" |
| #include "valprint.h" |
| #include "gdbcore.h" |
| #include "objfiles.h" |
| |
| #include "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); |
| |
| /* 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: ======= */ |
| |
| /* 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_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 */ |
| |
| struct collection_list; |
| static void add_aexpr (struct collection_list *, struct agent_expr *); |
| static char *mem2hex (gdb_byte *, char *, int); |
| static void add_register (struct collection_list *collection, |
| unsigned int regno); |
| static struct cleanup *make_cleanup_free_actions (struct breakpoint *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 |
| || strcmp (current_target.to_shortname, "extended-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_p, |
| long *sizeof_buf) |
| { |
| do /* Loop on reply from remote stub. */ |
| { |
| char *buf; |
| QUIT; /* allow user to bail out with ^C */ |
| getpkt (buf_p, sizeof_buf, 0); |
| buf = *buf_p; |
| 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 traceframe number to NUM. */ |
| static void |
| set_traceframe_num (int num) |
| { |
| traceframe_number = num; |
| set_internalvar_integer (lookup_internalvar ("trace_frame"), num); |
| } |
| |
| /* Set tracepoint number to NUM. */ |
| static void |
| set_tracepoint_num (int num) |
| { |
| tracepoint_number = num; |
| set_internalvar_integer (lookup_internalvar ("tracepoint"), num); |
| } |
| |
| /* Set externally visible debug variables for querying/printing |
| the traceframe context (line, function, file) */ |
| |
| static void |
| set_traceframe_context (struct frame_info *trace_frame) |
| { |
| CORE_ADDR trace_pc; |
| |
| if (trace_frame == NULL) /* Cease debugging any trace buffers. */ |
| { |
| traceframe_fun = 0; |
| traceframe_sal.pc = traceframe_sal.line = 0; |
| traceframe_sal.symtab = NULL; |
| clear_internalvar (lookup_internalvar ("trace_func")); |
| clear_internalvar (lookup_internalvar ("trace_file")); |
| set_internalvar_integer (lookup_internalvar ("trace_line"), -1); |
| return; |
| } |
| |
| /* Save as globals for internal use. */ |
| trace_pc = get_frame_pc (trace_frame); |
| traceframe_sal = find_pc_line (trace_pc, 0); |
| traceframe_fun = find_pc_function (trace_pc); |
| |
| /* Save linenumber as "$trace_line", a debugger variable visible to |
| users. */ |
| set_internalvar_integer (lookup_internalvar ("trace_line"), |
| traceframe_sal.line); |
| |
| /* Save func name as "$trace_func", a debugger variable visible to |
| users. */ |
| if (traceframe_fun == NULL |
| || SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL) |
| clear_internalvar (lookup_internalvar ("trace_func")); |
| else |
| set_internalvar_string (lookup_internalvar ("trace_func"), |
| SYMBOL_LINKAGE_NAME (traceframe_fun)); |
| |
| /* Save file name as "$trace_file", a debugger variable visible to |
| users. */ |
| if (traceframe_sal.symtab == NULL |
| || traceframe_sal.symtab->filename == NULL) |
| clear_internalvar (lookup_internalvar ("trace_file")); |
| else |
| set_internalvar_string (lookup_internalvar ("trace_file"), |
| traceframe_sal.symtab->filename); |
| } |
| |
| /* ACTIONS functions: */ |
| |
| /* Prototypes for action-parsing utility commands */ |
| static void read_actions (struct breakpoint *); |
| |
| /* The three functions: |
| collect_pseudocommand, |
| while_stepping_pseudocommand, and |
| end_actions_pseudocommand |
| are placeholders for "commands" that are actually ONLY to be used |
| within a tracepoint action list. If the actual function is ever called, |
| it means that somebody issued the "command" at the top level, |
| which is always an error. */ |
| |
| void |
| end_actions_pseudocommand (char *args, int from_tty) |
| { |
| error (_("This command cannot be used at the top level.")); |
| } |
| |
| void |
| while_stepping_pseudocommand (char *args, int from_tty) |
| { |
| error (_("This command can only be used in a tracepoint actions list.")); |
| } |
| |
| static void |
| collect_pseudocommand (char *args, int from_tty) |
| { |
| error (_("This command can only be used in a tracepoint actions list.")); |
| } |
| |
| /* Enter a list of actions for a tracepoint. */ |
| static void |
| trace_actions_command (char *args, int from_tty) |
| { |
| struct breakpoint *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 breakpoint *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); |
| |
| if (!line) |
| { |
| line = xstrdup ("end"); |
| printf_filtered ("end\n"); |
| } |
| |
| 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 breakpoint *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->loc->address), 1); |
| old_chain = make_cleanup (free_current_contents, &exp); |
| |
| if (exp->elts[0].opcode == OP_VAR_VALUE) |
| { |
| if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST) |
| { |
| warning (_("constant %s (value %ld) will not be collected."), |
| SYMBOL_PRINT_NAME (exp->elts[2].symbol), |
| SYMBOL_VALUE (exp->elts[2].symbol)); |
| return BADLINE; |
| } |
| else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT) |
| { |
| warning (_("%s is optimized away and cannot be collected."), |
| SYMBOL_PRINT_NAME (exp->elts[2].symbol)); |
| return BADLINE; |
| } |
| } |
| |
| /* We have something to collect, make sure that the expr to |
| bytecode translator can handle it and that it's not too |
| long. */ |
| aexpr = gen_trace_for_expr (t->loc->address, exp); |
| make_cleanup_free_agent_expr (aexpr); |
| |
| if (aexpr->len > MAX_AGENT_EXPR_LEN) |
| error (_("expression too complicated, try simplifying")); |
| |
| ax_reqs (aexpr, &areqs); |
| (void) make_cleanup (xfree, areqs.reg_mask); |
| |
| if (areqs.flaw != agent_flaw_none) |
| error (_("malformed expression")); |
| |
| if (areqs.min_height < 0) |
| error (_("gdb: Internal error: expression has min height < 0")); |
| |
| if (areqs.max_height > 20) |
| error (_("expression too complicated, try simplifying")); |
| |
| do_cleanups (old_chain); |
| } |
| while (p && *p++ == ','); |
| return GENERIC; |
| } |
| else if (cmd_cfunc_eq (c, 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 breakpoint *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 breakpoint *t) |
| { |
| return make_cleanup (do_free_actions_cleanup, t); |
| } |
| |
| enum { |
| memrange_absolute = -1 |
| }; |
| |
| struct memrange |
| { |
| int type; /* memrange_absolute for absolute memory range, |
| else basereg number */ |
| bfd_signed_vma start; |
| bfd_signed_vma end; |
| }; |
| |
| struct collection_list |
| { |
| unsigned char regs_mask[32]; /* room for up to 256 regs */ |
| long listsize; |
| long next_memrange; |
| struct memrange *list; |
| long aexpr_listsize; /* size of array pointed to by expr_list elt */ |
| long next_aexpr_elt; |
| struct agent_expr **aexpr_list; |
| |
| } |
| tracepoint_list, stepping_list; |
| |
| /* MEMRANGE functions: */ |
| |
| static int memrange_cmp (const void *, const void *); |
| |
| /* compare memranges for qsort */ |
| static int |
| memrange_cmp (const void *va, const void *vb) |
| { |
| const struct memrange *a = va, *b = vb; |
| |
| if (a->type < b->type) |
| return -1; |
| if (a->type > b->type) |
| return 1; |
| if (a->type == memrange_absolute) |
| { |
| if ((bfd_vma) a->start < (bfd_vma) b->start) |
| return -1; |
| if ((bfd_vma) a->start > (bfd_vma) b->start) |
| return 1; |
| } |
| else |
| { |
| if (a->start < b->start) |
| return -1; |
| if (a->start > b->start) |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* Sort the memrange list using qsort, and merge adjacent memranges. */ |
| static void |
| memrange_sortmerge (struct collection_list *memranges) |
| { |
| int a, b; |
| |
| qsort (memranges->list, memranges->next_memrange, |
| sizeof (struct memrange), memrange_cmp); |
| if (memranges->next_memrange > 0) |
| { |
| for (a = 0, b = 1; b < memranges->next_memrange; b++) |
| { |
| if (memranges->list[a].type == memranges->list[b].type && |
| memranges->list[b].start - memranges->list[a].end <= |
| MAX_REGISTER_SIZE) |
| { |
| /* memrange b starts before memrange a ends; merge them. */ |
| if (memranges->list[b].end > memranges->list[a].end) |
| memranges->list[a].end = memranges->list[b].end; |
| continue; /* next b, same a */ |
| } |
| a++; /* next a */ |
| if (a != b) |
| memcpy (&memranges->list[a], &memranges->list[b], |
| sizeof (struct memrange)); |
| } |
| memranges->next_memrange = a + 1; |
| } |
| } |
| |
| /* Add a register to a collection list. */ |
| static void |
| add_register (struct collection_list *collection, unsigned int regno) |
| { |
| if (info_verbose) |
| printf_filtered ("collect register %d\n", regno); |
| if (regno >= (8 * sizeof (collection->regs_mask))) |
| error (_("Internal: register number %d too large for tracepoint"), |
| regno); |
| collection->regs_mask[regno / 8] |= 1 << (regno % 8); |
| } |
| |
| /* Add a memrange to a collection list */ |
| static void |
| add_memrange (struct collection_list *memranges, |
| int type, bfd_signed_vma base, |
| unsigned long len) |
| { |
| if (info_verbose) |
| { |
| printf_filtered ("(%d,", type); |
| printf_vma (base); |
| printf_filtered (",%ld)\n", len); |
| } |
| |
| /* type: memrange_absolute == memory, other n == basereg */ |
| memranges->list[memranges->next_memrange].type = type; |
| /* base: addr if memory, offset if reg relative. */ |
| memranges->list[memranges->next_memrange].start = base; |
| /* len: we actually save end (base + len) for convenience */ |
| memranges->list[memranges->next_memrange].end = base + len; |
| memranges->next_memrange++; |
| if (memranges->next_memrange >= memranges->listsize) |
| { |
| memranges->listsize *= 2; |
| memranges->list = xrealloc (memranges->list, |
| memranges->listsize); |
| } |
| |
| if (type != memrange_absolute) /* Better collect the base register! */ |
| add_register (memranges, type); |
| } |
| |
| /* Add a symbol to a collection list. */ |
| static void |
| collect_symbol (struct collection_list *collect, |
| struct symbol *sym, |
| struct gdbarch *gdbarch, |
| long frame_regno, long frame_offset) |
| { |
| 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", |
| SYMBOL_PRINT_NAME (sym), |
| SYMBOL_CLASS (sym)); |
| break; |
| case LOC_CONST: |
| printf_filtered ("constant %s (value %ld) will not be collected.\n", |
| SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE (sym)); |
| break; |
| case LOC_STATIC: |
| offset = SYMBOL_VALUE_ADDRESS (sym); |
| if (info_verbose) |
| { |
| char tmp[40]; |
| |
| sprintf_vma (tmp, offset); |
| printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n", |
| SYMBOL_PRINT_NAME (sym), len, |
| tmp /* address */); |
| } |
| add_memrange (collect, memrange_absolute, offset, len); |
| break; |
| case LOC_REGISTER: |
| reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); |
| if (info_verbose) |
| printf_filtered ("LOC_REG[parm] %s: ", |
| SYMBOL_PRINT_NAME (sym)); |
| add_register (collect, reg); |
| /* Check for doubles stored in two registers. */ |
| /* FIXME: how about larger types stored in 3 or more regs? */ |
| if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT && |
| len > register_size (gdbarch, reg)) |
| add_register (collect, reg + 1); |
| break; |
| case LOC_REF_ARG: |
| printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n"); |
| printf_filtered (" (will not collect %s)\n", |
| SYMBOL_PRINT_NAME (sym)); |
| break; |
| case LOC_ARG: |
| reg = frame_regno; |
| offset = frame_offset + SYMBOL_VALUE (sym); |
| if (info_verbose) |
| { |
| printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ", |
| SYMBOL_PRINT_NAME (sym), len); |
| printf_vma (offset); |
| printf_filtered (" from frame ptr reg %d\n", reg); |
| } |
| add_memrange (collect, reg, offset, len); |
| break; |
| case LOC_REGPARM_ADDR: |
| reg = SYMBOL_VALUE (sym); |
| offset = 0; |
| if (info_verbose) |
| { |
| printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ", |
| SYMBOL_PRINT_NAME (sym), len); |
| printf_vma (offset); |
| printf_filtered (" from reg %d\n", reg); |
| } |
| add_memrange (collect, reg, offset, len); |
| break; |
| case LOC_LOCAL: |
| reg = frame_regno; |
| offset = frame_offset + SYMBOL_VALUE (sym); |
| if (info_verbose) |
| { |
| printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ", |
| SYMBOL_PRINT_NAME (sym), len); |
| printf_vma (offset); |
| printf_filtered (" from frame ptr reg %d\n", reg); |
| } |
| add_memrange (collect, reg, offset, len); |
| break; |
| case LOC_UNRESOLVED: |
| printf_filtered ("Don't know LOC_UNRESOLVED %s\n", |
| SYMBOL_PRINT_NAME (sym)); |
| break; |
| case LOC_OPTIMIZED_OUT: |
| printf_filtered ("%s has been optimized out of existence.\n", |
| SYMBOL_PRINT_NAME (sym)); |
| break; |
| } |
| } |
| |
| /* Add all locals (or args) symbols to collection list */ |
| static void |
| add_local_symbols (struct collection_list *collect, |
| struct gdbarch *gdbarch, CORE_ADDR pc, |
| long frame_regno, long frame_offset, int type) |
| { |
| struct 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) |
| { |
| if (SYMBOL_IS_ARGUMENT (sym) |
| ? type == 'A' /* collecting Arguments */ |
| : type == 'L') /* collecting Locals */ |
| { |
| count++; |
| collect_symbol (collect, sym, gdbarch, |
| 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] = xstrdup (temp_buf); |
| ndx++; |
| } |
| if (info_verbose) |
| printf_filtered ("\n"); |
| if (list->next_memrange > 0 && info_verbose) |
| printf_filtered ("Collecting memranges: \n"); |
| for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| sprintf_vma (tmp2, list->list[i].start); |
| if (info_verbose) |
| { |
| printf_filtered ("(%d, %s, %ld)\n", |
| list->list[i].type, |
| tmp2, |
| (long) (list->list[i].end - list->list[i].start)); |
| } |
| if (count + 27 > MAX_AGENT_EXPR_LEN) |
| { |
| (*str_list)[ndx] = savestring (temp_buf, count); |
| ndx++; |
| count = 0; |
| end = temp_buf; |
| } |
| |
| { |
| bfd_signed_vma length = list->list[i].end - list->list[i].start; |
| |
| /* The "%X" conversion specifier expects an unsigned argument, |
| so passing -1 (memrange_absolute) to it directly gives you |
| "FFFFFFFF" (or more, depending on sizeof (unsigned)). |
| Special-case it. */ |
| if (list->list[i].type == memrange_absolute) |
| sprintf (end, "M-1,%s,%lX", tmp2, (long) length); |
| else |
| sprintf (end, "M%X,%s,%lX", list->list[i].type, tmp2, (long) length); |
| } |
| |
| count += strlen (end); |
| end = temp_buf + count; |
| } |
| |
| for (i = 0; i < list->next_aexpr_elt; i++) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN) |
| { |
| (*str_list)[ndx] = savestring (temp_buf, count); |
| ndx++; |
| count = 0; |
| end = temp_buf; |
| } |
| sprintf (end, "X%08X,", list->aexpr_list[i]->len); |
| end += 10; /* 'X' + 8 hex digits + ',' */ |
| count += 10; |
| |
| end = mem2hex (list->aexpr_list[i]->buf, |
| end, list->aexpr_list[i]->len); |
| count += 2 * list->aexpr_list[i]->len; |
| } |
| |
| if (count != 0) |
| { |
| (*str_list)[ndx] = savestring (temp_buf, count); |
| ndx++; |
| count = 0; |
| end = temp_buf; |
| } |
| (*str_list)[ndx] = NULL; |
| |
| if (ndx == 0) |
| { |
| xfree (str_list); |
| return NULL; |
| } |
| else |
| return *str_list; |
| } |
| |
| static void |
| 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 breakpoint *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; |
| |
| gdbarch_virtual_frame_pointer (t->gdbarch, |
| t->loc->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 < gdbarch_num_regs (t->gdbarch); i++) |
| add_register (collect, i); |
| action_exp = strchr (action_exp, ','); /* more? */ |
| } |
| else if (0 == strncasecmp ("$arg", action_exp, 4)) |
| { |
| add_local_symbols (collect, |
| t->gdbarch, |
| t->loc->address, |
| frame_reg, |
| frame_offset, |
| 'A'); |
| action_exp = strchr (action_exp, ','); /* more? */ |
| } |
| else if (0 == strncasecmp ("$loc", action_exp, 4)) |
| { |
| add_local_symbols (collect, |
| t->gdbarch, |
| t->loc->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->loc->address), 1); |
| old_chain = make_cleanup (free_current_contents, &exp); |
| |
| switch (exp->elts[0].opcode) |
| { |
| case OP_REGISTER: |
| { |
| const char *name = &exp->elts[2].string; |
| |
| i = user_reg_map_name_to_regnum (t->gdbarch, |
| name, strlen (name)); |
| if (i == -1) |
| internal_error (__FILE__, __LINE__, |
| _("Register $%s not available"), |
| name); |
| if (info_verbose) |
| printf_filtered ("OP_REGISTER: "); |
| add_register (collect, i); |
| break; |
| } |
| |
| case UNOP_MEMVAL: |
| /* safe because we know it's a simple expression */ |
| tempval = evaluate_expression (exp); |
| addr = value_address (tempval); |
| len = TYPE_LENGTH (check_typedef (exp->elts[1].type)); |
| add_memrange (collect, memrange_absolute, addr, len); |
| break; |
| |
| case OP_VAR_VALUE: |
| collect_symbol (collect, |
| exp->elts[2].symbol, |
| t->gdbarch, |
| frame_reg, |
| frame_offset); |
| break; |
| |
| default: /* full-fledged expression */ |
| aexpr = gen_trace_for_expr (t->loc->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; |
| static long target_buf_size; |
| |
| /* 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) |
| { |
| 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, &target_buf_size, 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. */ |
| |
| void download_tracepoint (struct breakpoint *t); |
| |
| static void |
| trace_start_command (char *args, int from_tty) |
| { |
| VEC(breakpoint_p) *tp_vec = NULL; |
| int ix; |
| struct breakpoint *t; |
| |
| dont_repeat (); /* Like "run", dangerous to repeat accidentally. */ |
| |
| if (target_is_remote ()) |
| { |
| putpkt ("QTinit"); |
| remote_get_noisy_reply (&target_buf, &target_buf_size); |
| if (strcmp (target_buf, "OK")) |
| error (_("Target does not support this command.")); |
| |
| tp_vec = all_tracepoints (); |
| for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++) |
| { |
| download_tracepoint (t); |
| } |
| VEC_free (breakpoint_p, tp_vec); |
| |
| /* 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, &target_buf_size); |
| 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 (NULL); |
| 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.")); |
| } |
| |
| /* Send the definition of a single tracepoint to the target. */ |
| |
| void |
| download_tracepoint (struct breakpoint *t) |
| { |
| char tmp[40]; |
| char buf[2048]; |
| char **tdp_actions; |
| char **stepping_actions; |
| int ndx; |
| struct cleanup *old_chain = NULL; |
| struct agent_expr *aexpr; |
| struct cleanup *aexpr_chain = NULL; |
| |
| sprintf_vma (tmp, (t->loc ? t->loc->address : 0)); |
| sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number, |
| tmp, /* address */ |
| (t->enable_state == bp_enabled ? 'E' : 'D'), |
| t->step_count, t->pass_count); |
| /* If the tracepoint has a conditional, make it into an agent |
| expression and append to the definition. */ |
| if (t->loc->cond) |
| { |
| /* Only test support at download time, we may not know target |
| capabilities at definition time. */ |
| if (remote_supports_cond_tracepoints ()) |
| { |
| aexpr = gen_eval_for_expr (t->loc->address, t->loc->cond); |
| aexpr_chain = make_cleanup_free_agent_expr (aexpr); |
| sprintf (buf + strlen (buf), ":X%x,", aexpr->len); |
| mem2hex (aexpr->buf, buf + strlen (buf), aexpr->len); |
| do_cleanups (aexpr_chain); |
| } |
| else |
| warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t->number); |
| } |
| |
| if (t->actions) |
| strcat (buf, "-"); |
| putpkt (buf); |
| remote_get_noisy_reply (&target_buf, &target_buf_size); |
| if (strcmp (target_buf, "OK")) |
| error (_("Target does not support tracepoints.")); |
| |
| if (!t->actions) |
| return; |
| |
| 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, |
| &target_buf_size); |
| 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, |
| &target_buf_size); |
| if (strcmp (target_buf, "OK")) |
| error (_("Error on target while setting tracepoints.")); |
| } |
| } |
| do_cleanups (old_chain); |
| } |
| |
| /* tstop command */ |
| static void |
| trace_stop_command (char *args, int from_tty) |
| { |
| if (target_is_remote ()) |
| { |
| putpkt ("QTStop"); |
| remote_get_noisy_reply (&target_buf, &target_buf_size); |
| 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) |
| { |
| if (target_is_remote ()) |
| { |
| putpkt ("qTStatus"); |
| remote_get_noisy_reply (&target_buf, &target_buf_size); |
| |
| 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; |
| struct frame_id old_frame_id; |
| char *reply; |
| |
| old_frame_id = get_frame_id (get_current_frame ()); |
| |
| 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); |
| } |
| |
| reinit_frame_cache (); |
| registers_changed (); |
| set_traceframe_num (target_frameno); |
| set_tracepoint_num (target_tracept); |
| if (target_frameno == -1) |
| set_traceframe_context (NULL); |
| else |
| set_traceframe_context (get_current_frame ()); |
| |
| 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. */ |
| |
| if (frame_id_eq (old_frame_id, |
| get_frame_id (get_current_frame ()))) |
| print_what = SRC_LINE; |
| else |
| print_what = SRC_AND_LOC; |
| |
| print_stack_frame (get_selected_frame (NULL), 1, print_what); |
| do_displays (); |
| } |
| } |
| |
| /* trace_find_command takes a trace frame number n, |
| sends "QTFrame:<n>" to the target, |
| and accepts a reply that may contain several optional pieces |
| of information: a frame number, a tracepoint number, and an |
| indication of whether this is a trap frame or a stepping frame. |
| |
| The minimal response is just "OK" (which indicates that the |
| target does not give us a frame number or a tracepoint number). |
| Instead of that, the target may send us a string containing |
| any combination of: |
| F<hexnum> (gives the selected frame number) |
| T<hexnum> (gives the selected tracepoint number) |
| */ |
| |
| /* tfind command */ |
| static void |
| trace_find_command (char *args, int from_tty) |
| { /* this should only be called with a numeric argument */ |
| int frameno = -1; |
| |
| if (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, &target_buf_size, 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) |
| { |
| CORE_ADDR pc; |
| char tmp[40]; |
| |
| if (target_is_remote ()) |
| { |
| if (args == 0 || *args == 0) |
| pc = regcache_read_pc (get_current_regcache ()); |
| else |
| pc = parse_and_eval_address (args); |
| |
| sprintf_vma (tmp, pc); |
| sprintf (target_buf, "QTFrame:pc:%s", tmp); |
| finish_tfind_command (&target_buf, &target_buf_size, 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) |
| { |
| 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, &target_buf_size, 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) |
| { |
| 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) |
| { |
| struct gdbarch *gdbarch = get_current_arch (); |
| |
| 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 (gdbarch, 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)) |
| { |
| struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
| |
| 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 (gdbarch, start_pc, gdb_stdout); |
| wrap_here (" "); |
| printf_filtered (" but contains no code.\n"); |
| sal = find_pc_line (start_pc, 0); |
| if (sal.line > 0 && |
| find_line_pc_range (sal, &start_pc, &end_pc) && |
| start_pc != end_pc) |
| printf_filtered ("Attempting to find line %d instead.\n", |
| sal.line); |
| else |
| error (_("Cannot find a good line.")); |
| } |
| } |
| else |
| /* Is there any case in which we get here, and have an address |
| which the user would want to see? If we have debugging |
| symbols and no line numbers? */ |
| error (_("Line number %d is out of range for \"%s\"."), |
| sal.line, sal.symtab->filename); |
| |
| sprintf_vma (startpc_str, start_pc); |
| sprintf_vma (endpc_str, end_pc - 1); |
| /* Find within range of stated line. */ |
| if (args && *args) |
| sprintf (target_buf, "QTFrame:range:%s:%s", |
| startpc_str, endpc_str); |
| /* Find OUTSIDE OF range of CURRENT line. */ |
| else |
| sprintf (target_buf, "QTFrame:outside:%s:%s", |
| startpc_str, endpc_str); |
| finish_tfind_command (&target_buf, &target_buf_size, |
| 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, &target_buf_size, 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, &target_buf_size, from_tty); |
| } |
| else |
| error (_("Trace can only be run on remote targets.")); |
| } |
| |
| /* info scope command: list the locals for a scope. */ |
| static void |
| scope_info (char *args, int from_tty) |
| { |
| struct symtabs_and_lines sals; |
| struct symbol *sym; |
| struct minimal_symbol *msym; |
| struct block *block; |
| char **canonical, *symname, *save_args = args; |
| struct dict_iterator iter; |
| int j, count = 0; |
| struct gdbarch *gdbarch; |
| int regno; |
| |
| if (args == 0 || *args == 0) |
| error (_("requires an argument (function, line or *addr) to define a scope")); |
| |
| sals = decode_line_1 (&args, 1, NULL, 0, &canonical, NULL); |
| if (sals.nelts == 0) |
| return; /* presumably decode_line_1 has already warned */ |
| |
| /* Resolve line numbers to PC */ |
| resolve_sal_pc (&sals.sals[0]); |
| block = block_for_pc (sals.sals[0].pc); |
| |
| while (block != 0) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| ALL_BLOCK_SYMBOLS (block, iter, sym) |
| { |
| QUIT; /* allow user to bail out with ^C */ |
| if (count == 0) |
| printf_filtered ("Scope for %s:\n", save_args); |
| count++; |
| |
| symname = SYMBOL_PRINT_NAME (sym); |
| if (symname == NULL || *symname == '\0') |
| continue; /* probably botched, certainly useless */ |
| |
| gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile); |
| |
| printf_filtered ("Symbol %s is ", symname); |
| switch (SYMBOL_CLASS (sym)) |
| { |
| default: |
| case LOC_UNDEF: /* messed up symbol? */ |
| printf_filtered ("a bogus symbol, class %d.\n", |
| SYMBOL_CLASS (sym)); |
| count--; /* don't count this one */ |
| continue; |
| case LOC_CONST: |
| printf_filtered ("a constant with value %ld (0x%lx)", |
| SYMBOL_VALUE (sym), SYMBOL_VALUE (sym)); |
| break; |
| case LOC_CONST_BYTES: |
| printf_filtered ("constant bytes: "); |
| if (SYMBOL_TYPE (sym)) |
| for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++) |
| fprintf_filtered (gdb_stdout, " %02x", |
| (unsigned) SYMBOL_VALUE_BYTES (sym)[j]); |
| break; |
| case LOC_STATIC: |
| printf_filtered ("in static storage at address "); |
| printf_filtered ("%s", paddress (gdbarch, |
| SYMBOL_VALUE_ADDRESS (sym))); |
| break; |
| case LOC_REGISTER: |
| /* GDBARCH is the architecture associated with the objfile |
| the symbol is defined in; the target architecture may be |
| different, and may provide additional registers. However, |
| we do not know the target architecture at this point. |
| We assume the objfile architecture will contain all the |
| standard registers that occur in debug info in that |
| objfile. */ |
| regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); |
| |
| if (SYMBOL_IS_ARGUMENT (sym)) |
| printf_filtered ("an argument in register $%s", |
| gdbarch_register_name (gdbarch, regno)); |
| else |
| printf_filtered ("a local variable in register $%s", |
| gdbarch_register_name (gdbarch, regno)); |
| break; |
| case LOC_ARG: |
| printf_filtered ("an argument at stack/frame offset %ld", |
| SYMBOL_VALUE (sym)); |
| break; |
| case LOC_LOCAL: |
| printf_filtered ("a local variable at frame offset %ld", |
| SYMBOL_VALUE (sym)); |
| break; |
| case LOC_REF_ARG: |
| printf_filtered ("a reference argument at offset %ld", |
| SYMBOL_VALUE (sym)); |
| break; |
| case LOC_REGPARM_ADDR: |
| /* Note comment at LOC_REGISTER. */ |
| regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); |
| printf_filtered ("the address of an argument, in register $%s", |
| gdbarch_register_name (gdbarch, regno)); |
| break; |
| case LOC_TYPEDEF: |
| printf_filtered ("a typedef.\n"); |
| continue; |
| case LOC_LABEL: |
| printf_filtered ("a label at address "); |
| printf_filtered ("%s", paddress (gdbarch, |
| SYMBOL_VALUE_ADDRESS (sym))); |
| break; |
| case LOC_BLOCK: |
| printf_filtered ("a function at address "); |
| printf_filtered ("%s", |
| paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (sym)))); |
| break; |
| case LOC_UNRESOLVED: |
| msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
| NULL, NULL); |
| if (msym == NULL) |
| printf_filtered ("Unresolved Static"); |
| else |
| { |
| printf_filtered ("static storage at address "); |
| printf_filtered ("%s", |
| paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msym))); |
| } |
| break; |
| case LOC_OPTIMIZED_OUT: |
| printf_filtered ("optimized out.\n"); |
| continue; |
| case LOC_COMPUTED: |
| SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, gdb_stdout); |
| break; |
| } |
| if (SYMBOL_TYPE (sym)) |
| printf_filtered (", length %d.\n", |
| TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)))); |
| } |
| if (BLOCK_FUNCTION (block)) |
| break; |
| else |
| block = BLOCK_SUPERBLOCK (block); |
| } |
| if (count <= 0) |
| printf_filtered ("Scope for %s contains no locals or arguments.\n", |
| save_args); |
| } |
| |
| /* worker function (cleanup) */ |
| static void |
| replace_comma (void *data) |
| { |
| char *comma = data; |
| *comma = ','; |
| } |
| |
| /* tdump command */ |
| static void |
| trace_dump_command (char *args, int from_tty) |
| { |
| struct regcache *regcache; |
| struct gdbarch *gdbarch; |
| struct breakpoint *t; |
| struct 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; |
| } |
| |
| t = get_tracepoint (tracepoint_number); |
| |
| if (t == NULL) |
| error (_("No known tracepoint matches 'current' tracepoint #%d."), |
| tracepoint_number); |
| |
| old_cleanups = make_cleanup (null_cleanup, NULL); |
| |
| printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n", |
| tracepoint_number, traceframe_number); |
| |
| /* The current frame is a trap frame if the frame PC is equal |
| to the tracepoint PC. If not, then the current frame was |
| collected during single-stepping. */ |
| |
| regcache = get_current_regcache (); |
| gdbarch = get_regcache_arch (regcache); |
| |
| stepping_frame = (t->loc->address != (regcache_read_pc (regcache) |
| - gdbarch_decr_pc_after_break (gdbarch))); |
| |
| 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 char * |
| mem2hex (gdb_byte *mem, char *buf, int count) |
| { |
| gdb_byte ch; |
| |
| while (count-- > 0) |
| { |
| ch = *mem++; |
| |
| *buf++ = hexchars[ch >> 4]; |
| *buf++ = hexchars[ch & 0xf]; |
| } |
| |
| *buf = 0; |
| |
| return buf; |
| } |
| |
| int |
| get_traceframe_number (void) |
| { |
| return traceframe_number; |
| } |
| |
| |
| /* module initialization */ |
| void |
| _initialize_tracepoint (void) |
| { |
| struct cmd_list_element *c; |
| |
| traceframe_number = -1; |
| tracepoint_number = -1; |
| |
| if (tracepoint_list.list == NULL) |
| { |
| tracepoint_list.listsize = 128; |
| tracepoint_list.list = xmalloc |
| (tracepoint_list.listsize * sizeof (struct memrange)); |
| } |
| if (tracepoint_list.aexpr_list == NULL) |
| { |
| tracepoint_list.aexpr_listsize = 128; |
| tracepoint_list.aexpr_list = xmalloc |
| (tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *)); |
| } |
| |
| if (stepping_list.list == NULL) |
| { |
| stepping_list.listsize = 128; |
| stepping_list.list = xmalloc |
| (stepping_list.listsize * sizeof (struct memrange)); |
| } |
| |
| if (stepping_list.aexpr_list == NULL) |
| { |
| stepping_list.aexpr_listsize = 128; |
| stepping_list.aexpr_list = xmalloc |
| (stepping_list.aexpr_listsize * sizeof (struct agent_expr *)); |
| } |
| |
| add_info ("scope", scope_info, |
| _("List the variables local to a scope")); |
| |
| add_cmd ("tracepoints", class_trace, NULL, |
| _("Tracing of program execution without stopping the program."), |
| &cmdlist); |
| |
| add_com ("tdump", class_trace, trace_dump_command, |
| _("Print everything collected at the current tracepoint.")); |
| |
| add_prefix_cmd ("tfind", class_trace, trace_find_command, _("\ |
| Select a trace frame;\n\ |
| No argument means forward by one frame; '-' means backward by one frame."), |
| &tfindlist, "tfind ", 1, &cmdlist); |
| |
| add_cmd ("outside", class_trace, trace_find_outside_command, _("\ |
| Select a trace frame whose PC is outside the given range.\n\ |
| Usage: tfind outside addr1, addr2"), |
| &tfindlist); |
| |
| add_cmd ("range", class_trace, trace_find_range_command, _("\ |
| Select a trace frame whose PC is in the given range.\n\ |
| Usage: tfind range addr1,addr2"), |
| &tfindlist); |
| |
| add_cmd ("line", class_trace, trace_find_line_command, _("\ |
| Select a trace frame by source line.\n\ |
| Argument can be a line number (with optional source file), \n\ |
| a function name, or '*' followed by an address.\n\ |
| Default argument is 'the next source line that was traced'."), |
| &tfindlist); |
| |
| add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, _("\ |
| Select a trace frame by tracepoint number.\n\ |
| Default is the tracepoint for the current trace frame."), |
| &tfindlist); |
| |
| add_cmd ("pc", class_trace, trace_find_pc_command, _("\ |
| Select a trace frame by PC.\n\ |
| Default is the current PC, or the PC of the current trace frame."), |
| &tfindlist); |
| |
| add_cmd ("end", class_trace, trace_find_end_command, _("\ |
| Synonym for 'none'.\n\ |
| De-select any trace frame and resume 'live' debugging."), |
| &tfindlist); |
| |
| add_cmd ("none", class_trace, trace_find_none_command, |
| _("De-select any trace frame and resume 'live' debugging."), |
| &tfindlist); |
| |
| add_cmd ("start", class_trace, trace_find_start_command, |
| _("Select the first trace frame in the trace buffer."), |
| &tfindlist); |
| |
| add_com ("tstatus", class_trace, trace_status_command, |
| _("Display the status of the current trace data collection.")); |
| |
| add_com ("tstop", class_trace, trace_stop_command, |
| _("Stop trace data collection.")); |
| |
| add_com ("tstart", class_trace, trace_start_command, |
| _("Start trace data collection.")); |
| |
| add_com ("end", class_trace, end_actions_pseudocommand, _("\ |
| Ends a list of commands or actions.\n\ |
| Several GDB commands allow you to enter a list of commands or actions.\n\ |
| Entering \"end\" on a line by itself is the normal way to terminate\n\ |
| such a list.\n\n\ |
| Note: the \"end\" command cannot be used at the gdb prompt.")); |
| |
| add_com ("while-stepping", class_trace, while_stepping_pseudocommand, _("\ |
| Specify single-stepping behavior at a tracepoint.\n\ |
| Argument is number of instructions to trace in single-step mode\n\ |
| following the tracepoint. This command is normally followed by\n\ |
| one or more \"collect\" commands, to specify what to collect\n\ |
| while single-stepping.\n\n\ |
| Note: this command can only be used in a tracepoint \"actions\" list.")); |
| |
| add_com_alias ("ws", "while-stepping", class_alias, 0); |
| add_com_alias ("stepping", "while-stepping", class_alias, 0); |
| |
| add_com ("collect", class_trace, collect_pseudocommand, _("\ |
| Specify one or more data items to be collected at a tracepoint.\n\ |
| Accepts a comma-separated list of (one or more) expressions. GDB will\n\ |
| collect all data (variables, registers) referenced by that expression.\n\ |
| Also accepts the following special arguments:\n\ |
| $regs -- all registers.\n\ |
| $args -- all function arguments.\n\ |
| $locals -- all variables local to the block/function scope.\n\ |
| Note: this command can only be used in a tracepoint \"actions\" list.")); |
| |
| add_com ("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.")); |
| |
| target_buf_size = 2048; |
| target_buf = xmalloc (target_buf_size); |
| } |