Initial source

1 files changed, 109 insertions, 0 deletions

diff --git a/ddb/db_write_cmd.c b/ddb/db_write_cmd.c
new file mode 100644
index 0000000..a72102b
--- /dev/null
+++ b/ddb/db_write_cmd.c
@@ -0,0 +1,109 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1992,1991,1990 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.
+ */
+/*
+ *	Author: David B. Golub,  Carnegie Mellon University
+ *	Date:	7/90
+ */
+
+#include "mach_kdb.h"
+#if MACH_KDB
+
+#include <mach/boolean.h>
+#include <kern/task.h>
+#include <kern/thread.h>
+
+#include <machine/db_machdep.h>
+
+#include <ddb/db_lex.h>
+#include <ddb/db_access.h>
+#include <ddb/db_command.h>
+#include <ddb/db_sym.h>
+#include <ddb/db_task_thread.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;
+	boolean_t	t_opt, u_opt;
+	thread_t	thread;
+	task_t		task;
+
+	addr = (db_addr_t) address;
+
+	size = db_size_option(modif, &u_opt, &t_opt);
+	if (t_opt) 
+	  {
+	    if (!db_get_next_thread(&thread, 0))
+	      return;
+	    task = thread->task;
+	  }
+	else
+	  task = db_current_task();
+	
+	/* if user space is not explicitly specified, 
+	   look in the kernel */
+	if (!u_opt)
+	  task = TASK_NULL;
+
+	if (!DB_VALID_ADDRESS(addr, u_opt)) {
+	  db_printf("Bad address %#*X\n", 2*sizeof(vm_offset_t), addr);
+	  return;
+	}
+
+	while (db_expression(&new_value)) {
+	    old_value = db_get_task_value(addr, size, FALSE, task);
+	    db_task_printsym(addr, DB_STGY_ANY, task);
+	    db_printf("\t\t%#*N\t=\t%#*N\n",
+	    	2*sizeof(db_expr_t), old_value,
+		2*sizeof(db_expr_t), new_value);
+	    db_put_task_value(addr, size, new_value, task);
+	    addr += size;
+
+	    wrote_one = TRUE;
+	}
+
+	if (!wrote_one)
+	    db_error("Nothing written.\n");
+
+	db_next = addr;
+	db_prev = addr - size;
+}
+
+#endif MACH_KDB