asm: implement stub instruction emitter

asm/assembler/block.c

@@ -0,0 +1,46 @@
+#include "assembler.h"
+
+#include <blue/core/hash.h>
+#include <blue/object/dict.h>
+#include <blue/object/number.h>
+#include <blue/object/string.h>
+#include <ivy/asm/bin.h>
+#include <ivy/ident.h>
+#include <ivy/selector.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct block_assembler_scope {
+	struct assembler_scope s_base;
+};
+
+static enum ivy_status init_scope(
+	struct ivy_assembler *as, struct assembler_scope *scope,
+	const ivy_assembler_attrib_table attrib)
+{
+	struct ivy_bin_block header = {0};
+
+	header.b_index = b_i32_htob((uint32_t)attrib[IVY_ASM_ATTRIB_INDEX]);
+	assembler_write_data(as, &header, sizeof header);
+
+	struct block_assembler_scope *c
+		= (struct block_assembler_scope *)scope;
+
+	return IVY_OK;
+}
+
+static enum ivy_status put_instr(
+	struct ivy_assembler *as, struct assembler_scope *scope,
+	const struct ivy_instr *instr)
+{
+	uint32_t op = 0xAABBCCDD;
+	b_i32 x = b_i32_htob(op);
+	assembler_write_data(as, &x, sizeof x);
+	return IVY_OK;
+}
+
+const struct assembler_scope_type block_scope_type = {
+	.s_scope_size = sizeof(struct block_assembler_scope),
+	.s_init_scope = init_scope,
+	.s_put_instr = put_instr,
+};