From 728c7f37daf6e8ebef11b7c58f7aac6ae54b8c91 Mon Sep 17 00:00:00 2001 From: Michael Snyder Date: Tue, 2 Dec 1997 19:36:26 +0000 Subject: [PATCH] Tue Dec 2 11:34:48 1997 Michael Snyder (msnyder@cleaver.cygnus.com) * tracepoint.c: use "lookup_cmd" to parse actions commands (thus allowing unambiguous prefixes and aliases). --- gdb/ChangeLog | 5 +++ gdb/tracepoint.c | 83 +++++++++++++++++++++++++++++++----------------- 2 files changed, 59 insertions(+), 29 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 08e29fd9191..e5807eca016 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +Tue Dec 2 11:34:48 1997 Michael Snyder (msnyder@cleaver.cygnus.com) + + * tracepoint.c: use "lookup_cmd" to parse actions commands + (thus allowing unambiguous prefixes and aliases). + Tue Dec 2 10:15:57 1997 Nick Clifton * configure.tgt: Add support for Thumb target. diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c index 0518f0f045e..2869e9c14c9 100644 --- a/gdb/tracepoint.c +++ b/gdb/tracepoint.c @@ -99,7 +99,6 @@ static struct symtab_and_line traceframe_sal; /* Tracing command lists */ static struct cmd_list_element *tfindlist; -static struct cmd_list_element *tracelist; /* ======= Important command functions: ======= */ static void trace_command PARAMS ((char *, int)); @@ -723,26 +722,28 @@ static char *parse_and_eval_memrange PARAMS ((char *, long *)); /* The three functions: - collect_pseudocom, while_stepping_pseudocom, and end_pseudocom + 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_pseudocom (args, from_tty) +end_actions_pseudocommand (args, from_tty) { error ("This command cannot be used at the top level."); } static void -while_stepping_pseudocom (args, from_tty) +while_stepping_pseudocommand (args, from_tty) { error ("This command can only be used in a tracepoint actions list."); } static void -collect_pseudocom (args, from_tty) +collect_pseudocommand (args, from_tty) { error ("This command can only be used in a tracepoint actions list."); } @@ -870,9 +871,10 @@ validate_actionline (line, t) char *line; struct tracepoint *t; { - char *p; + struct cmd_list_element *c; struct expression *exp; value_ptr temp, temp2; + char *p; for (p = line; isspace (*p); ) p++; @@ -880,9 +882,16 @@ validate_actionline (line, t) /* symbol lookup etc. */ if (*p == '\0') /* empty line: just prompt for another line. */ return BADLINE; - else if (0 == strncasecmp (p, "collect", 7)) + + 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 (c->function.cfunc == collect_pseudocommand) { - p += 7; do { /* repeat over a comma-separated list */ while (isspace (*p)) p++; @@ -910,7 +919,7 @@ validate_actionline (line, t) /*exp->elts[0].opcode != UNOP_CAST && */ exp->elts[0].opcode != OP_REGISTER) { - warning ("collect: enter variable name or register.\n"); + warning ("collect requires a variable or register name.\n"); return BADLINE; } if (exp->elts[0].opcode == OP_VAR_VALUE) @@ -931,11 +940,10 @@ validate_actionline (line, t) } while (p && *p++ == ','); return GENERIC; } - else if (0 == strncasecmp (p, "while-stepping", 14)) + else if (c->function.cfunc == while_stepping_pseudocommand) { char *steparg; /* in case warning is necessary */ - p += 14; while (isspace (*p)) p++; steparg = p; @@ -953,11 +961,11 @@ validate_actionline (line, t) t->step_count = -1; return STEPPING; } - else if (0 == strncasecmp (p, "end", 3)) + else if (c->function.cfunc == end_actions_pseudocommand) return END; else { - warning ("'%s' is not a supported tracepoint action.", p); + warning ("'%s' is not a supported tracepoint action.", line); return BADLINE; } } @@ -1374,13 +1382,14 @@ encode_actions (t, tdp_actions, step_count, stepping_actions) unsigned long *step_count; char **stepping_actions; { - struct expression *exp; static char tdp_buff[2048], step_buff[2048]; - struct action_line *action; char *action_exp; + struct expression *exp; + struct action_line *action; bfd_signed_vma offset; long i; - struct collection_list *collect; + struct collection_list *collect; + struct cmd_list_element *cmd; clear_collection_list (&tracepoint_list); clear_collection_list (&stepping_list); @@ -1395,9 +1404,12 @@ encode_actions (t, tdp_actions, step_count, stepping_actions) while (isspace (*action_exp)) action_exp++; - if (0 == strncasecmp (action_exp, "collect", 7)) + cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1); + if (cmd == 0) + error ("Bad action list item: %s", action_exp); + + if (cmd->function.cfunc == collect_pseudocommand) { - action_exp = action_exp + 7; do { /* repeat over a comma-separated list */ while (isspace (*action_exp)) action_exp++; @@ -1469,11 +1481,11 @@ encode_actions (t, tdp_actions, step_count, stepping_actions) } } while (action_exp && *action_exp++ == ','); } - else if (0 == strncasecmp (action_exp, "while-stepping", 14)) + else if (cmd->function.cfunc == while_stepping_pseudocommand) { collect = &stepping_list; } - else if (0 == strncasecmp (action_exp, "end", 3)) + else if (cmd->function.cfunc == end_actions_pseudocommand) { if (collect == &stepping_list) /* end stepping actions */ collect = &tracepoint_list; @@ -2052,14 +2064,19 @@ tracepoint_save_command (args, from_tty) indent = i1; for (line = tp->actions; line; line = line->next) { + struct cmd_list_element *cmd; + actionline = line->action; while (isspace(*actionline)) actionline++; fprintf (fp, "%s%s\n", indent, actionline); - if (0 == strncasecmp (actionline, "while-stepping", 14)) + cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); + if (cmd == 0) + error ("Bad action list item: %s", actionline); + if (cmd->function.cfunc == while_stepping_pseudocommand) indent = i2; - else if (0 == strncasecmp (actionline, "end", 3)) + else if (cmd->function.cfunc == end_actions_pseudocommand) indent = i1; } } @@ -2255,6 +2272,8 @@ trace_dump_command (args, from_tty) for (action = t->actions; action; action = action->next) { + struct cmd_list_element *cmd; + action_exp = action->action; while (isspace (*action_exp)) action_exp++; @@ -2262,11 +2281,15 @@ trace_dump_command (args, from_tty) /* The collection actions to be done while stepping are bracketed by the commands "while-stepping" and "end". */ - if (0 == strncasecmp (action_exp, "while-stepping", 14)) + cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1); + if (cmd == 0) + error ("Bad action list item: %s", action_exp); + + if (cmd->function.cfunc == while_stepping_pseudocommand) stepping_actions = 1; - else if (0 == strncasecmp (action_exp, "end", 3)) + else if (cmd->function.cfunc == end_actions_pseudocommand) stepping_actions = 0; - else if (0 == strncasecmp (action_exp, "collect", 7)) + else if (cmd->function.cfunc == collect_pseudocommand) { /* Display the collected data. For the trap frame, display only what was collected at the trap. @@ -2275,7 +2298,6 @@ trace_dump_command (args, from_tty) STEPPING_FRAME and STEPPING_ACTIONS should be equal. */ if (stepping_frame == stepping_actions) { - action_exp += 7; do { /* repeat over a comma-separated list */ QUIT; if (*action_exp == ',') @@ -2420,14 +2442,14 @@ 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_pseudocom, + 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_pseudocom, + 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\ @@ -2435,7 +2457,10 @@ 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 ("collect", class_trace, collect_pseudocom, + 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) arguments.\n\ Things that may be collected include registers, variables, plus\n\ -- 2.30.2