/* * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* */ #include #include /* For strncmp(), strlcpy() */ #include #include #include #include #include #include /* For db_printf() */ #include #include /* * debugger macro support */ #define DB_NUSER_MACRO 10 /* max user macros */ int db_macro_free = DB_NUSER_MACRO; struct db_user_macro { char m_name[TOK_STRING_SIZE]; char m_lbuf[DB_LEX_LINE_SIZE]; int m_size; } db_user_macro[DB_NUSER_MACRO]; int db_macro_level = -1; db_expr_t db_macro_args[DB_MACRO_LEVEL][DB_MACRO_NARGS]; /* Prototypes for functions local to this file. */ static struct db_user_macro *db_lookup_macro(char *name); static struct db_user_macro * db_lookup_macro(char *name) { register struct db_user_macro *mp; for (mp = db_user_macro; mp < &db_user_macro[DB_NUSER_MACRO]; mp++) { if (mp->m_name[0] == 0) continue; if (strncmp(mp->m_name, name, TOK_STRING_SIZE) == 0) return(mp); } return(0); } void db_def_macro_cmd(void) { register char *p; register int c; register struct db_user_macro *mp, *ep; if (db_read_token() != tIDENT) { db_printf("Bad macro name \"%s\"\n", db_tok_string); db_error(0); /* NOTREACHED */ } if ((mp = db_lookup_macro(db_tok_string)) == 0) { if (db_macro_free <= 0) db_error("Too many macros\n"); /* NOTREACHED */ ep = &db_user_macro[DB_NUSER_MACRO]; for (mp = db_user_macro; mp < ep && mp->m_name[0]; mp++); if (mp >= ep) db_error("ddb: internal error(macro)\n"); /* NOTREACHED */ db_macro_free--; strlcpy(mp->m_name, db_tok_string, TOK_STRING_SIZE); } for (c = db_read_char(); c == ' ' || c == '\t'; c = db_read_char()); for (p = mp->m_lbuf; c > 0; c = db_read_char()) *p++ = c; *p = 0; mp->m_size = p - mp->m_lbuf; } void db_del_macro_cmd(void) { struct db_user_macro *mp = NULL; if (db_read_token() != tIDENT || (mp = db_lookup_macro(db_tok_string)) == 0) { db_printf("No such macro \"%s\"\n", db_tok_string); db_error(0); /* NOTREACHED */ } mp->m_name[0] = 0; db_macro_free++; } void db_show_macro(void) { register struct db_user_macro *mp; int t; char *name = 0; if ((t = db_read_token()) == tIDENT) name = db_tok_string; else db_unread_token(t); for (mp = db_user_macro; mp < &db_user_macro[DB_NUSER_MACRO]; mp++) { if (mp->m_name[0] == 0) continue; if (name && strncmp(mp->m_name, name, TOK_STRING_SIZE)) continue; db_printf("%s: %s", mp->m_name, mp->m_lbuf); } } int db_exec_macro(char *name) { register struct db_user_macro *mp; register int n; if ((mp = db_lookup_macro(name)) == 0) return(-1); if (db_macro_level+1 >= DB_MACRO_LEVEL) { db_macro_level = -1; db_error("Too many macro nest\n"); /* NOTREACHED */ } for (n = 0; n < DB_MACRO_NARGS && db_expression(&db_macro_args[db_macro_level+1][n]); n++); while (n < DB_MACRO_NARGS) db_macro_args[db_macro_level+1][n++] = 0; db_macro_level++; db_exec_cmd_nest(mp->m_lbuf, mp->m_size); db_macro_level--; return(0); } int db_arg_variable(__unused struct db_variable *vp, db_expr_t *valuep, int flag, db_var_aux_param_t ap) { db_expr_t value; char *name; db_addr_t offset; if (flag == DB_VAR_SHOW) { value = db_macro_args[ap->hidden_level][ap->suffix[0]-1]; db_printf("%#lln", (unsigned long long)value); db_find_xtrn_task_sym_and_offset(value, &name, &offset, TASK_NULL); if (name != (char *)0 && offset <= db_maxoff && offset != value) { db_printf("\t%s", name); if (offset != 0) db_printf("+%#llr", (unsigned long long)offset); } return(0); } if (ap->level != 1 || ap->suffix[0] < 1 || ap->suffix[0] > DB_MACRO_NARGS) { db_error("Bad $arg variable\n"); /* NOTREACHED */ } if (flag == DB_VAR_GET) *valuep = db_macro_args[db_macro_level][ap->suffix[0]-1]; else db_macro_args[db_macro_level][ap->suffix[0]-1] = *valuep; return(0); }