From a298cb75c4f586b83b304c7dc66cb555693ea1b8 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Fri, 5 Jan 2018 17:52:38 +0100
Subject: Stuff

---
 ir.h | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

(limited to 'ir.h')

diff --git a/ir.h b/ir.h
index b359d00..e732a3d 100644
--- a/ir.h
+++ b/ir.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <stdio.h>
 #include <stdbool.h>
 
 
@@ -21,6 +22,7 @@ enum instype {
 	INS_JMP,   // jmp name
 	INS_JCC,   // if condcode, jmp name
 	INS_CALL,  // call name
+	INS_CALLV, // r0 = call name
 	INS_RET,   // return
 	INS_RETV,  // return r1
 	INS_MOV,   // r0 = r1
@@ -32,15 +34,31 @@ enum condcode {
 
 enum reftype {
 	REF_REG,  // reg
-	REF_MEM,  // [reg + offset + (rel_heap ? heap_base : 0)]
+	REF_MEM,  // [reg + offset + {0, .data, heap base}[rel]]
 	REF_IMM,  // imm
 };
 
+enum refrel {
+	REFREL_ZERO,
+	REFREL_DATA,
+	REFREL_HEAP,
+};
+
+#define REG_UNUSED (-1)
+#define REG_A (-10)
+#define REG_B (-11)
+#define REG_C (-12)
+#define REG_D (-13)
+#define REG_X (-14)
+#define REG_Y (-15)
+#define REG_SP (-16)
+#define REG_BP (-17)
+
 struct ref {
 	enum reftype type;
-	int reg;  // if -1 in a REF_MEM, unused
+	int reg;  // >=0 for temporary or one of the REG_ constants
 	int offset;
-	bool rel_heap;  // whether the heap base address should be added to the offset
+	enum refrel rel;
 	int imm;
 };
 
@@ -61,13 +79,17 @@ struct ir {
 struct ir* ir_make(void);
 void ir_delete(struct ir *ir);
 
-// returns offset
+void ir_print(struct ir *ir, FILE *f);
+void irins_print(struct irins *ins, FILE *f);
+
+// returns offset in .data segment
 struct ref ir_reserve_global(struct ir *ir, int size);
 
 void ir_append(struct ir *ir, struct irins *ins);
 
 struct irins* irins_make(enum instype type);
 struct irins* irins_make_name(enum instype type, char *name);
+struct irins* irins_make_0(enum instype type, struct ref r0);
 struct irins* irins_make_01(enum instype type, struct ref r0, struct ref r1);
 struct irins* irins_make_012(enum instype type, struct ref r0, struct ref r1, struct ref r2);
 struct irins* irins_make_1(enum instype type, struct ref r1);
@@ -78,6 +100,6 @@ void irins_delete(struct irins *ins);
 char* gen_label_name(void);
 
 struct ref ref_reg(int reg);
-struct ref ref_mem(int reg, int offset, bool rel_heap);
+struct ref ref_mem(int reg, int offset, enum refrel rel);
 struct ref ref_imm(int imm);
 struct ref ref_next_register(void);
-- 
cgit v1.2.3-54-g00ecf