File input and output routines away

1 files changed, 0 insertions, 176 deletions

diff --git a/input_bin.c b/input_bin.c
deleted file mode 100644
index c914cd1..0000000
--- a/input_bin.c
+++ /dev/null
@@ -1,176 +0,0 @@
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <errno.h>
-
-#include "parse.h"
-
-static void disasm_rtype(uint16_t i, uint16_t unused, struct instruction *inst)
-{
-	(void)unused;
-	inst->type = INST_TYPE_R;
-	inst->inst.r.oper = GET_OPER(i);
-	inst->inst.r.dest = GET_REG_DEST(i);
-	inst->inst.r.left = GET_REG_LEFT(i);
-	inst->inst.r.right = GET_REG_RIGHT(i);
-}
-
-static void disasm_nitype(uint16_t i, uint16_t unused, struct instruction *inst)
-{
-	(void)unused;
-	inst->type = INST_TYPE_NI;
-	inst->inst.i.oper = GET_OPER(i);
-	inst->inst.i.dest = GET_REG_DEST(i);
-	inst->inst.i.left = GET_REG_LEFT(i);
-	inst->inst.i.imm.value = GET_NI_IMM(i);
-	inst->inst.i.imm_is_ident = 0;
-}
-
-static void disasm_witype(uint16_t i, uint16_t imm, struct instruction *inst)
-{
-	inst->type = INST_TYPE_WI;
-	inst->inst.i.oper = GET_OPER(i);
-	inst->inst.i.dest = GET_REG_DEST(i);
-	inst->inst.i.left = GET_REG_LEFT(i);
-	inst->inst.i.imm.value = imm;
-	inst->inst.i.imm_is_ident = 0;
-}
-
-static void disasm_jreg(uint16_t i, uint16_t unused, struct instruction *inst)
-{
-	(void)unused;
-	inst->type = INST_TYPE_JR;
-	inst->inst.jr.cond = GET_JB_COND(i);
-	inst->inst.jr.reg = GET_JUMP_REG(i);
-}
-
-static void disasm_jimm(uint16_t i, uint16_t imm, struct instruction *inst)
-{
-	inst->type = INST_TYPE_JI;
-	inst->inst.ji.cond= GET_JB_COND(i);
-	inst->inst.ji.imm.value = imm;
-	inst->inst.ji.imm_is_ident = 0;
-}
-
-static void disasm_bimm(uint16_t i, uint16_t pc, struct instruction *inst)
-{
-	struct { signed int s:10; } sign;
-	int offset = sign.s = GET_B_OFFSET(i);
-	inst->type = INST_TYPE_B;
-	inst->inst.b.cond = GET_JB_COND(i);
-	inst->inst.b.imm.value = pc + 2 * offset;
-	inst->inst.b.imm_is_ident = 0;
-}
-
-
-/**
- * FIXME move and factor out with parse.c */
-static struct instruction *insts = NULL;
-static size_t insts_count = 0;
-static int add_instruction(struct instruction inst)
-{
-	struct instruction *old_insts = insts;
-	insts = realloc(insts, (insts_count + 1) * sizeof(struct instruction));
-	if (!insts) {
-		free(old_insts);
-		perror("realloc");
-		return 1;
-	}
-
-	insts[insts_count] = inst;
-
-	insts_count++;
-	return 0;
-}
-
-
-
-/* FIXME needs whatsit arguments. f, tok, tok length */
-static int disasm_file(FILE *f)
-{
-	int ret = 0;
-	size_t offs = 0;
-	uint16_t inst = 0;
-	uint8_t c[2] = { 0 };
-	size_t extra_read = 0;
-	uint16_t extra_arg = 0;
-	struct instruction i = { 0 };
-	void (*disasm_inst)(uint16_t, uint16_t, struct instruction*);
-
-	while (!feof(f) && fread(c, sizeof(c), 1, f) == 1) {
-		extra_read = 0;
-		inst = c[0] << 8 | c[1];
-		switch (GET_INST_TYPE(inst)) {
-			case INST_TYPE_RTYPE:
-				disasm_inst = disasm_rtype;
-				break;
-			case INST_TYPE_NITYPE:
-				disasm_inst = disasm_nitype;
-				break;
-			case INST_TYPE_WITYPE:
-				if (fread(c, sizeof(c), 1, f) != 1) {
-					ret = -errno;
-					break;
-				}
-				extra_read = sizeof(c);
-				extra_arg = c[0] << 16 | c[1];
-				disasm_inst = disasm_witype;
-				break;
-			case INST_TYPE_JTYPE:
-				/* J Type can be split into three further subtypes:
-				 *  - branch (always immediate, 2 bytes)
-				 *  - jump reg (2 bytes)
-				 *  - jump immediate (4 bytes)
-				 */
-				if (inst & MASK_IS_BRANCH) {
-					disasm_inst = disasm_bimm;
-					extra_arg = offs;
-				} else {
-					if (inst & MASK_JR) {
-						disasm_inst = disasm_jreg;
-					} else {
-						if (fread(c, sizeof(c), 1, f) != 1) {
-							ret = -errno;
-							break;
-						}
-						extra_arg = c[0] << 16 | c[1];
-						extra_read = sizeof(c);
-						disasm_inst = disasm_jimm;
-					}
-				}
-				break;
-			default:
-				printf("Unhandled instruction at byte %zd\n", offs);
-				ret = -1;
-				break;
-		}
-		/* Fall out of loop if picking a handler errored */
-		if (ret) {
-			break;
-		}
-		disasm_inst(inst, extra_arg, &i);
-		if (ret < 0) {
-			fprintf(stderr, "Error handling instruction at byte %zd\n", offs);
-			break;
-		}
-		if (add_instruction(i))
-			return 1;
-		offs += sizeof(c) + extra_read;
-	}
-	if (!feof(f)) {
-		perror("fread");
-		ret = -errno;
-	}
-	return ret;
-}
-
-int disasm(FILE *f, struct instruction **i, size_t *i_count)
-{
-	int ret = 0;
-
-	ret = disasm_file(f);
-	*i = insts;
-	*i_count = insts_count;
-
-	return ret;
-}