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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <stdio.h>
#include <libelf.h>
#include <string.h>
#include "rdb.h"
typedef struct {
char *ht_key; /* HELP keyword for topic */
char *ht_desc; /* description of topic */
void (*ht_func)(); /* detailed info on topic */
} help_topics;
static void
break_help()
{
(void) printf("Break Help:\n"
"\tbreak - list breakpoints\n"
"\tbreak <address> - set break point at <address\n");
}
static void
delete_help()
{
(void) printf("Delete Help:\n"
"\tdelete <address> - delete breakpoint at <address>\n");
}
static void
dis_help()
{
(void) printf("Disassemble Help:\n"
"\tdis -\t\t\tdisassemble from current PC\n"
"\tdis <address> [count] -\tdisassemble from address for\n"
"\t\t\t\t<count> instructions\n");
}
static void
echo_help()
{
(void) printf("Echo Help:\n"
"\tEcho '<quoted string>'\n"
"\t\tthe echo command can be used to display output to\n"
"\t\tthe main terminal. This is useful when running\n"
"\t\tcommand scripts and wanting to display status\n"
"\n"
"\t\tcurrently only <quoted strings> may be displayed\n");
}
static void
print_help()
{
(void) printf("Print Help:\n"
"\tprint <address> [count [format]]\n"
"\t\tcount - number of units to print (default 4)\n"
"\t\tformat - how to display data:\n"
"\t\t\t\tX - Hex Words (default)\n"
"\t\t\t\tb - unsigned hex bytes\n"
"\t\t\t\ts - string\n"
"\tprint <varname>\n"
"\t\thelp varname for more info\n");
}
static void
step_help()
{
(void) printf("Step Help:\n");
(void) printf("\tstep - step one instruction.\n");
(void) printf("\tstep count [silent] - step count instructions\n");
(void) printf("\t\t\t\tif silent is specified to not disassemble\n"
"\t\t\t\tinstr. during stepping\n");
}
static void
value_help()
{
(void) printf("Value Help:\n"
"\tvalue <symbol name> -\tdisplay the value associated with\n"
"\t\t\t\tsymbol <symbol name>.\n");
}
static void
varname_help()
{
(void) printf("Variable Name Help:\n"
"\tVariable names are in the form of $<name> and are used\n"
"\tto access special information. Possible varnames\n"
"\tare:\n"
"\t\tcommon:\n"
"\t\t\t$regs - display all registers\n"
"\t\tsparc:\n"
"\t\t\t$ins - display IN registers\n"
"\t\t\t$globs - display GLOBAL registers\n"
"\t\t\t$outs - display OUT registers\n"
"\t\t\t$locs - display LOCAL registers\n"
"\t\t\t$specs - display SPECIAL registers\n"
"\t\ti86pc:\n");
}
static const help_topics htops[] = {
{
"break",
"Set and display breakpoints",
break_help
},
{
"cont",
"continue execution of process",
0
},
{
"delete",
"delete breakpoints",
delete_help
},
{
"dis",
"Help on the Disassemble Command",
dis_help
},
{
"echo",
"Help on the Echo Command",
echo_help
},
{
"event",
"event [on|off] to enable or disable event information",
0
},
{
"getmaps",
"Read Link_Map structure from run-time linker",
0
},
{
"linkmaps",
"Display link-map information",
0
},
{
"maps",
"Display memory mapping information",
0
},
{
"objpad",
"Set object padding for ld.so.1 mmap'ed objects",
0
},
{
"pltskip",
"Enables and disables stepping through PLT's",
0
},
{
"print",
"Display memory at <address>",
print_help
},
{
"step",
"Help on the Step Command",
step_help
},
{
"value",
"Help on the Value Command",
value_help
},
{
"varname",
"Help on $variable values",
varname_help
},
{
"where",
"Display stack trace",
0
},
{
0,
0,
0
}
};
void
rdb_help(const char *topic) {
int i;
if (topic) {
for (i = 0; htops[i].ht_key; i++) {
if (strcmp(htops[i].ht_key, topic) == 0) {
if (htops[i].ht_func)
htops[i].ht_func();
else
(void) printf("no additional help "
"available for %s\n",
htops[i].ht_key);
return;
}
}
(void) printf("Help not available for topic: %s\n", topic);
}
(void) printf("The following commands are available\n");
for (i = 0; htops[i].ht_key; i++) {
(void) printf("\t%10s\t%s", htops[i].ht_key, htops[i].ht_desc);
if (htops[i].ht_func)
(void) putchar('*');
(void) putchar('\n');
}
(void) printf("\n(*) more help is available by typing "
"'help <topic>'\n\n");
}
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