From 9911f9a73c7dc46069199e52f2bc54082d10366c Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Wed, 3 Jan 2018 23:10:59 +0100
Subject: Initial

---
 ir.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 ir.c

(limited to 'ir.c')

diff --git a/ir.c b/ir.c
new file mode 100644
index 0000000..9d28e2f
--- /dev/null
+++ b/ir.c
@@ -0,0 +1,110 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "ir.h"
+
+
+struct ir* ir_make(void) {
+	struct ir *ir = malloc(sizeof(struct ir));
+	ir->cap = 32;
+	ir->len = 0;
+	ir->inss = malloc(ir->cap * sizeof(struct irins*));
+	ir->globspace = 0;
+	return ir;
+}
+
+void ir_delete(struct ir *ir) {
+	for (int i = 0; i < ir->len; i++) {
+		irins_delete(ir->inss[i]);
+	}
+	free(ir->inss);
+	free(ir);
+}
+
+struct ref ir_reserve_global(struct ir *ir, int size) {
+	int offset = ir->globspace;
+	ir->globspace += size;
+	return ref_mem(-1, offset, true);
+}
+
+void ir_append(struct ir *ir, struct irins *ins) {
+	if (ir->len == ir->cap) {
+		ir->cap *= 2;
+		ir->inss = realloc(ir->inss, ir->cap * sizeof(struct irins*));
+	}
+	ir->inss[ir->len++] = ins;
+}
+
+struct irins* irins_make(enum instype type) {
+	struct irins *ins = malloc(sizeof(struct irins));
+	ins->type = type;
+	ins->name = NULL;
+	return ins;
+}
+
+struct irins* irins_make_name(enum instype type, char *name) {
+	struct irins *ins = irins_make(type);
+	ins->name = name;
+	return ins;
+}
+
+struct irins* irins_make_01(enum instype type, struct ref r0, struct ref r1) {
+	struct irins *ins = irins_make(type);
+	ins->r0 = r0;
+	ins->r1 = r1;
+	return ins;
+}
+
+struct irins* irins_make_012(enum instype type, struct ref r0, struct ref r1, struct ref r2) {
+	struct irins *ins = irins_make_01(type, r0, r1);
+	ins->r2 = r2;
+	return ins;
+}
+
+struct irins* irins_make_1(enum instype type, struct ref r1) {
+	struct irins *ins = irins_make(type);
+	ins->r1 = r1;
+	return ins;
+}
+
+struct irins* irins_make_12(enum instype type, struct ref r1, struct ref r2) {
+	struct irins *ins = irins_make(type);
+	ins->r1 = r1;
+	ins->r2 = r2;
+	return ins;
+}
+
+struct irins* irins_make_jcc(char *name, enum condcode condcode) {
+	struct irins *ins = irins_make(INS_JCC);
+	ins->name = name;
+	ins->condcode = condcode;
+	return ins;
+}
+
+void irins_delete(struct irins *ins) {
+	if (ins->name) free(ins->name);
+	free(ins);
+}
+
+char* gen_label_name(void) {
+	static int next = 0;
+	char *buf = malloc(16);
+	sprintf(buf, "L%d", next++);
+	return buf;
+}
+
+struct ref ref_reg(int reg) {
+	return (struct ref){REF_REG, reg, 0, false, 0};
+}
+
+struct ref ref_mem(int reg, int offset, bool rel_heap) {
+	return (struct ref){REF_MEM, reg, offset, rel_heap, 0};
+}
+
+struct ref ref_imm(int imm) {
+	return (struct ref){REF_IMM, -1, 0, false, imm};
+}
+
+struct ref ref_next_register(void) {
+	static int next = 0;
+	return ref_reg(next++);
+}
-- 
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