mirror of https://git.sr.ht/~rabbits/uxn
160 lines
3.3 KiB
C
160 lines
3.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "uxn.h"
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#include "devices/system.h"
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#include "devices/file.h"
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#include "devices/datetime.h"
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/*
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Copyright (c) 2021 Devine Lu Linvega
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Permission to use, copy, modify, and distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE.
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*/
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int
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uxn_interrupt(Uxn *u)
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{
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(void)u;
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return 0;
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}
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static int
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error(char *msg, const char *err)
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{
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fprintf(stderr, "Error %s: %s\n", msg, err);
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return 0;
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}
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static void
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inspect(Stack *s, char *name)
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{
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Uint8 x, y;
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fprintf(stderr, "\n%s\n", name);
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for(y = 0; y < 0x04; y++) {
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for(x = 0; x < 0x08; x++) {
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Uint8 p = y * 0x08 + x;
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fprintf(stderr,
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p == s->ptr ? "[%02x]" : " %02x ",
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s->dat[p]);
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}
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fprintf(stderr, "\n");
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}
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}
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void
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system_deo_special(Device *d, Uint8 port)
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{
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if(port == 0xe) {
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inspect(&d->u->wst, "Working-stack");
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inspect(&d->u->rst, "Return-stack");
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}
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}
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static void
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console_deo(Device *d, Uint8 port)
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{
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FILE *fd = port == 0x8 ? stdout : port == 0x9 ? stderr
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: 0;
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if(fd) {
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fputc(d->dat[port], fd);
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fflush(fd);
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}
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}
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static Uint8
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nil_dei(Device *d, Uint8 port)
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{
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return d->dat[port];
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}
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static void
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nil_deo(Device *d, Uint8 port)
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{
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(void)d;
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(void)port;
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}
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static int
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console_input(Uxn *u, char c)
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{
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Device *d = &u->dev[1];
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d->dat[0x2] = c;
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return uxn_eval(u, GETVECTOR(d));
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}
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static void
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run(Uxn *u)
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{
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Device *d = &u->dev[0];
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while(!d->dat[0xf]) {
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int c = fgetc(stdin);
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if(c != EOF)
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console_input(u, (Uint8)c);
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}
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}
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static int
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load(Uxn *u, char *filepath)
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{
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FILE *f;
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int r;
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if(!(f = fopen(filepath, "rb"))) return 0;
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r = fread(u->ram + PAGE_PROGRAM, 1, 0x10000 - PAGE_PROGRAM, f);
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fclose(f);
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if(r < 1) return 0;
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fprintf(stderr, "Loaded %s\n", filepath);
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return 1;
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}
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static int
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start(Uxn *u)
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{
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if(!uxn_boot(u, (Uint8 *)calloc(0x10000, sizeof(Uint8))))
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return error("Boot", "Failed");
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/* system */ uxn_port(u, 0x0, system_dei, system_deo);
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/* console */ uxn_port(u, 0x1, nil_dei, console_deo);
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/* empty */ uxn_port(u, 0x2, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x3, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x4, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x5, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x6, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x7, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x8, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0x9, nil_dei, nil_deo);
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/* file */ uxn_port(u, 0xa, nil_dei, file_deo);
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/* datetime */ uxn_port(u, 0xb, datetime_dei, nil_deo);
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/* empty */ uxn_port(u, 0xc, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0xd, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0xe, nil_dei, nil_deo);
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/* empty */ uxn_port(u, 0xf, nil_dei, nil_deo);
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return 1;
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}
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int
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main(int argc, char **argv)
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{
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Uxn u;
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int i;
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if(argc < 2)
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return error("Usage", "uxncli game.rom args");
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if(!start(&u))
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return error("Start", "Failed");
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if(!load(&u, argv[1]))
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return error("Load", "Failed");
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if(!uxn_eval(&u, PAGE_PROGRAM))
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return error("Init", "Failed");
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for(i = 2; i < argc; i++) {
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char *p = argv[i];
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while(*p) console_input(&u, *p++);
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console_input(&u, '\n');
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}
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run(&u);
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return 0;
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}
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