From 170f3ddc3d8967c0b5d4755c0221c396db215b2f Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sun, 7 Apr 2024 01:28:45 +0300
Subject: implement some initial qbt backend stuff

---
 src/asm.c | 102 --------------------------------------------------------------
 1 file changed, 102 deletions(-)
 delete mode 100644 src/asm.c

(limited to 'src/asm.c')

diff --git a/src/asm.c b/src/asm.c
deleted file mode 100644
index 8e49aa9..0000000
--- a/src/asm.c
+++ /dev/null
@@ -1,102 +0,0 @@
-#include <ek/ops.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-
-/* I guess using the zero register might be okay in some scenarios, but for now
- * I'll just keep it an illegal register */
-#define ASSERT_REG(x) {assert(x->kind == LOC_REG); assert( \
-			       x->reg > 0 && x->reg < 81);}
-#define ASSERT_MEM(x) {assert(x->kind == LOC_MEM); assert( \
-			       x->reg > 0 && x->reg < 81);}
-
-static int print_comment(struct op *op, FILE *f)
-{
-	fprintf(f, "/* %s */\n", op->string);
-	return 0;
-}
-
-static int print_label(struct op *op, FILE *f)
-{
-	fprintf(f, "%s:\n", op->string);
-	return 0;
-}
-
-static int print_li(struct op *op, FILE *f)
-{
-	struct loc *o = &op->outputs;
-	assert(o->next == NULL);
-	/* unsure if this will always hold, but for now */
-	ASSERT_REG(o);
-
-	fprintf(f, "li x%zd, %lld\n", o->reg, op->constant);
-	return 0;
-}
-
-static int print_mv(struct op *op, FILE *f)
-{
-	struct loc *i = &op->inputs;
-	struct loc *o = &op->outputs;
-	assert(i->next == NULL);
-	assert(o->next == NULL);
-	ASSERT_REG(i);
-	ASSERT_REG(o);
-
-	fprintf(f, "mv x%zd, x%zd\n", o->reg, i->reg);
-	return 0;
-}
-
-static int print_stt(struct op *op, FILE *f)
-{
-	struct loc *i = &op->inputs;
-	struct loc *o = &op->outputs;
-	assert(i->next == NULL);
-	assert(o->next == NULL);
-	ASSERT_REG(i);
-	ASSERT_MEM(o);
-
-	fprintf(f, "st t, x%zd, %lld(x%zd)\n", i->reg, o->off, o->reg);
-	return 0;
-}
-
-static int print_ret(struct op *op, FILE *f)
-{
-	(void)op;
-	/* technically speaking ret takes a number of inputs, but they should be
-	 * marshaled into registers with moves etc. so don't worry about them
-	 * here */
-	fprintf(f, "jalr x0, 0(x21)\n");
-	/* eventually add in proper ret alias to assembly language once I go
-	 * through calling conventions etc. */
-	return 0;
-}
-
-static int print_op(struct op *op, FILE *f)
-{
-	int ret = 0;
-	switch (op->opcode) {
-	case OP_COMMENT: ret = print_comment(op, f); break;
-	case OP_LABEL: ret = print_label(op, f); break;
-	case OP_LI: ret = print_li(op, f); break;
-	case OP_MV: ret = print_mv(op, f); break;
-	case OP_STT: ret = print_stt(op, f); break;
-	case OP_RET: ret = print_ret(op, f); break;
-	default: abort();
-	}
-
-	return ret;
-}
-
-int print_asm(struct ops *ops, FILE *f)
-{
-	int ret = 0;
-	struct op *op = ops->base;
-	while (op) {
-		if ((ret = print_op(op, f)))
-			break;
-
-		op = op->next;
-	}
-
-	return ret;
-}
-- 
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