diff options
Diffstat (limited to 'sys/ddb/db_write_cmd.c')
| -rw-r--r-- | sys/ddb/db_write_cmd.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/sys/ddb/db_write_cmd.c b/sys/ddb/db_write_cmd.c new file mode 100644 index 0000000..e2625ca --- /dev/null +++ b/sys/ddb/db_write_cmd.c @@ -0,0 +1,99 @@ +/* + * 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 + * 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 the + * rights to redistribute these changes. + * + * $Id: db_write_cmd.c,v 1.3 1993/11/25 01:30:16 wollman Exp $ + */ + +/* + * Author: David B. Golub, Carnegie Mellon University + * Date: 7/90 + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/proc.h> +#include <ddb/ddb.h> + +#include <ddb/db_lex.h> +#include <ddb/db_access.h> +#include <ddb/db_command.h> +#include <ddb/db_sym.h> + +/* + * Write to file. + */ +/*ARGSUSED*/ +void +db_write_cmd(address, have_addr, count, modif) + db_expr_t address; + boolean_t have_addr; + db_expr_t count; + char * modif; +{ + register + db_addr_t addr; + register + db_expr_t old_value; + db_expr_t new_value; + register int size; + boolean_t wrote_one = FALSE; + + addr = (db_addr_t) address; + + switch (modif[0]) { + case 'b': + size = 1; + break; + case 'h': + size = 2; + break; + case 'l': + case '\0': + size = 4; + break; + default: + db_error("Unknown size\n"); + return; + } + + while (db_expression(&new_value)) { + old_value = db_get_value(addr, size, FALSE); + db_printsym(addr, DB_STGY_ANY); + db_printf("\t\t%#8n\t=\t%#8n\n", old_value, new_value); + db_put_value(addr, size, new_value); + addr += size; + + wrote_one = TRUE; + } + + if (!wrote_one) + db_error("Nothing written.\n"); + + db_next = addr; + db_prev = addr - size; + + db_skip_to_eol(); +} + |
