1 files changed, 55 insertions, 3 deletions

diff --git a/cooker/gluten.c b/cooker/gluten.c
index 6460798..05d408f 100644
--- a/cooker/gluten.c
+++ b/cooker/gluten.c
@@ -32,6 +32,15 @@ size_t gluten_size[TYPE_COUNT] = {
 
 };
 
+const char *jump_name[JUMP_COUNT] = { "next block", "next match", "end" };
+
+/**
+ * gluten_alloc() - Allocate in temporary (seitan read-write) data area
+ * @g:		gluten context
+ * @size:	Bytes to allocate
+ *
+ * Return: offset to allocated area
+ */
 struct gluten_offset gluten_alloc(struct gluten_ctx *g, size_t size)
 {
 	struct gluten_offset ret = g->dp;
@@ -43,16 +52,59 @@ struct gluten_offset gluten_alloc(struct gluten_ctx *g, size_t size)
 	return ret;
 }
 
+/**
+ * gluten_alloc() - Allocate storage for given type in temporary data area
+ * @g:		gluten context
+ * @type:	Data type
+ *
+ * Return: offset to allocated area
+ */
 struct gluten_offset gluten_alloc_type(struct gluten_ctx *g, enum type type)
 {
 	return gluten_alloc(g, gluten_size[type]);
 }
 
-void gluten_init(struct gluten_ctx *g)
+void gluten_add_tag(struct gluten_ctx *g, const char *name,
+		    struct gluten_offset offset)
 {
-	(void)g;
+	int i;
+
+	for (i = 0; i < TAGS_MAX && g->tags[i].name; i++);
+	if (i == TAGS_MAX)
+		die("Too many tags");
+
+	g->tags[i].name = name;
+	g->tags[i].offset = offset;
+
+	debug("   tag '%s' now refers to %s at %i",
+	      name, gluten_offset_name[offset.type], offset.offset);
+}
 
-	g->ip.type = g->lr.type = OFFSET_INSTRUCTION;
+/**
+ * gluten_init() - Initialise gluten structures and layout
+ * @g:		gluten context
+ */
+void gluten_init(struct gluten_ctx *g)
+{
+	g->ip.type = g->lr.type = g->mr.type = OFFSET_INSTRUCTION;
+	g->ip.offset = g->lr.offset = g->mr.offset = 0;
 	g->dp.type = OFFSET_DATA;
 	g->cp.type = OFFSET_RO_DATA;
 }
+
+void gluten_write(struct gluten_ctx *g, const char *path)
+{
+	ssize_t n;
+	int fd;
+
+	fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC,
+		  S_IRUSR | S_IWUSR);
+
+	if ((n = write(fd, &g->g, sizeof(g->g))) == -1)
+		die("Failed to write gluten: %s", strerror(errno));
+
+	if (n != sizeof(g->g))
+		die("Failed to write %i bytes of gluten", sizeof(g->g) - n);
+
+	close(fd);
+}