X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=z80comp2;a=blobdiff_plain;f=emu%2Fsrc%2Fmain.c;fp=emu%2Fsrc%2Fmain.c;h=54a3d3caa096e52efa389ffa0d9960c6032ca789;hp=0000000000000000000000000000000000000000;hb=a0a85eb847ff3bb5da13e78618efdcd1b9f588cf;hpb=b55f31d1ac4a1991f2ad7b2d17be06969ea25e47

diff --git a/emu/src/main.c b/emu/src/main.c
new file mode 100644
index 0000000..54a3d3c
--- /dev/null
+++ b/emu/src/main.c
@@ -0,0 +1,149 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sched.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/mman.h>
+#include "emu.h"
+
+static void sighandler(int s);
+static int parse_args(int argc, char **argv);
+
+static const char *rom_fname = "rom";
+static const char *termdev = "/dev/tty";
+
+static int ttyfd;
+static struct termios saved_term;
+static volatile int quit;
+
+int main(int argc, char **argv)
+{
+	void *rom;
+	int res, fd, maxfd;
+	struct stat st;
+	struct termios term;
+	fd_set rdset;
+	struct timeval tv = {0, 0};
+
+	if(parse_args(argc, argv) == -1) {
+		return 1;
+	}
+
+	if((fd = open(rom_fname, O_RDONLY)) == -1) {
+		fprintf(stderr, "failed to open ROM image: %s: %s\n", rom_fname, strerror(errno));
+		return -1;
+	}
+	fstat(fd, &st);
+
+	if((rom = mmap(0, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0)) == (void*)-1) {
+		fprintf(stderr, "failed to map ROM image\n");
+		return -1;
+	}
+
+	if((ttyfd = open(termdev, O_RDWR)) == -1) {
+		fprintf(stderr, "failed to open terminal device: %s: %s\n", termdev, strerror(errno));
+		return -1;
+	}
+	if(tcgetattr(ttyfd, &term) == -1) {
+		perror("failed to get terminal attributes");
+		return -1;
+	}
+	saved_term = term;
+	term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
+	term.c_oflag &= ~OPOST;
+	term.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+	term.c_cflag = (term.c_cflag & ~(CSIZE | PARENB)) | CS8;
+	term.c_cc[VMIN] = 0;
+	term.c_cc[VTIME] = 1;
+	tcsetattr(ttyfd, TCSAFLUSH, &term);
+
+	if(emu_init(rom, st.st_size) == -1) {
+		return 1;
+	}
+
+	signal(SIGINT, sighandler);
+	signal(SIGQUIT, sighandler);
+	signal(SIGTERM, sighandler);
+	signal(SIGSEGV, sighandler);
+	signal(SIGILL, sighandler);
+
+	while(!quit) {
+		FD_ZERO(&rdset);
+		FD_SET(ttyfd, &rdset);
+
+		maxfd = ttyfd;
+
+		res = select(maxfd + 1, &rdset, 0, 0, &tv);
+		if(quit) break;
+
+		if(res > 0) {
+			if(FD_ISSET(ttyfd, &rdset)) {
+				int i, rd;
+				char buf[256];
+
+				while((rd = read(ttyfd, buf, sizeof buf)) > 0) {
+					for(i=0; i<rd; i++) {
+						emu_serin(0, buf[i]);
+					}
+				}
+				if(!rd) break;	/* EOF */
+			}
+		}
+
+		emu_step();
+		sched_yield();
+	}
+
+	emu_cleanup();
+
+	tcsetattr(ttyfd, TCSAFLUSH, &saved_term);
+	return 0;
+}
+
+void emu_serout(int port, int c)
+{
+	write(ttyfd, &c, 1);
+}
+
+static void sighandler(int s)
+{
+	quit = 1;
+}
+
+static int parse_args(int argc, char **argv)
+{
+	int i;
+
+	for(i=1; i<argc; i++) {
+		if(argv[i][0] == '-') {
+			if(argv[i][2] == 0) {
+				switch(argv[i][1]) {
+				case 'r':
+					if(!argv[++i]) {
+						fprintf(stderr, "-r must be followed by a rom image file\n");
+						return -1;
+					}
+					rom_fname = argv[i];
+					break;
+
+				default:
+					fprintf(stderr, "invalid option: %s\n", argv[i]);
+					return -1;
+				}
+			} else {
+				fprintf(stderr, "invalid option: %s\n", argv[i]);
+				return -1;
+			}
+		} else {
+			fprintf(stderr, "unexpected argument: %s\n", argv[i]);
+			return -1;
+		}
+	}
+	return 0;
+}