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Allow the user to switch into gdb mode from ddb

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This commit is contained in:
Paul Traina 1996-08-27 19:46:28 +00:00
parent f8f0b4798e
commit ad146781b1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=17848
1 changed files with 21 additions and 1 deletions
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22
sys/ddb/db_command.c
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@ -23,7 +23,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: db_command.c,v 1.17 1995/12/07 12:44:48 davidg Exp $
* $Id: db_command.c,v 1.18 1995/12/10 19:07:49 bde Exp $
*/
/*
@ -35,6 +35,7 @@
* Command dispatcher.
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <vm/vm.h>
@ -58,7 +59,9 @@ db_addr_t db_prev;
db_addr_t db_next;
static db_cmdfcn_t db_fncall;
static db_cmdfcn_t db_gdb;
static db_cmdfcn_t db_panic;
/*
* if 'ed' style: 'dot' is set at start of last item printed,
* and '+' points to next line.
@ -366,6 +369,7 @@ static struct command db_command_table[] = {
{ "show", 0, 0, db_show_cmds },
{ "ps", db_ps, 0, 0 },
{ "panic", db_panic, 0, 0 },
{ "gdb", db_gdb, 0, 0 },
{ (char *)0, }
};
@ -494,3 +498,19 @@ db_fncall(dummy1, dummy2, dummy3, dummy4)
args[5], args[6], args[7], args[8], args[9] );
db_printf("%#n\n", retval);
}
/* Enter GDB remote protocol debugger on the next trap. */
static void
db_gdb (dummy1, dummy2, dummy3, dummy4)
db_expr_t dummy1;
boolean_t dummy2;
db_expr_t dummy3;
char * dummy4;
{
boothowto ^= RB_GDB;
db_printf("Next trap will enter %s\n",
boothowto & RB_GDB ? "GDB remote protocol mode"
: "DDB debugger");
}