1 files changed, 113 insertions, 0 deletions
diff --git a/sys/boot/common/interp_forth.c b/sys/boot/common/interp_forth.c
new file mode 100644
index 000000000000..0e0c616229f3
--- /dev/null
+++ b/sys/boot/common/interp_forth.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#include <stand.h>
+#include "bootstrap.h"
+#include "ficl.h"
+
+/*
+ * BootForth   Interface to Ficl Forth interpreter.
+ */
+
+static FICL_VM	*bf_vm;
+
+/*
+ * Shim for taking commands from BF and passing them out to 'standard'
+ * argv/argc command functions.
+ */
+static void
+bf_command(FICL_VM *vm)
+{
+    struct bootblk_command	**cmdp;
+    bootblk_cmd_t		*cmd;
+    char			*name, *line;
+    FICL_STRING			*tail = (FICL_STRING *)vm->pad;
+    int				argc, result;
+    char			**argv;
+
+    /* Get the name of the current word */
+    name = vm->runningWord->name;
+    
+    /* Find our command structure */
+    SET_FOREACH(cmdp, Xcommand_set) {
+	if (((*cmdp)->c_name != NULL) && !strcmp(name, (*cmdp)->c_name))
+	    cmd = (*cmdp)->c_fn;
+    }
+    if (cmd == NULL)
+	panic("callout for unknown command '%s'", name);
+    
+    /* Get remainder of invocation */
+    vmGetString(vm, tail, '\n');
+    
+    /* XXX This is grostic */
+    line = malloc(strlen(name) + strlen(tail->text) + 2);
+    sprintf(line, "%s %s", name, tail->text);
+    command_errmsg = command_errbuf;
+    command_errbuf[0] = 0;
+    if (!parse(&argc, &argv, line)) {
+	result = (cmd)(argc, argv);
+	free(argv);
+	if (result != 0) {
+	    strcpy(command_errmsg, vm->pad);
+	    vmTextOut(vm, vm->pad, 1);
+	}
+    } else {
+	vmTextOut(vm, "parse error\n", 1);
+    }
+    free(line);
+}
+
+/*
+ * Initialise the Forth interpreter, create all our commands as words.
+ */
+void
+bf_init(void)
+{
+    struct bootblk_command	**cmdp;
+    
+    ficlInitSystem(10000);	/* XXX what's the argument here? */
+    bf_vm = ficlNewVM();
+
+    /* make all commands appear as Forth words */
+    SET_FOREACH(cmdp, Xcommand_set)
+	ficlBuild((*cmdp)->c_name, bf_command, FW_DEFAULT);
+    
+}
+
+/*
+ * Feed a line of user input to the Forth interpreter
+ */
+void
+bf_run(char *line)
+{
+    int		result;
+    
+    result = ficlExec(bf_vm, line);
+    if (result == VM_USEREXIT)
+	panic("interpreter exit");
+}