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emul: use ncurses in /emul/forth

Browse Source 
It doesn't change anything featurewise, but this change is in
preparation for the addition of an eventual AT-XY.
This commit is contained in:
Virgil Dupras 2020-05-23 08:24:39 -04:00
parent d041b91846
commit f884918d73
3 changed files with 48 additions and 39 deletions
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2
emul/Makefile
View File

@ -28,7 +28,7 @@ blkfs-bin.h: blkfs $(BIN2C)
$(BIN2C) BLKFS < blkfs > $@
forth: forth.c $(OBJS) forth-bin.h blkfs-bin.h
$(CC) forth.c $(OBJS) -o $@
$(CC) forth.c $(OBJS) -lncurses -o $@
libz80/libz80.o: libz80/z80.c
$(MAKE) -C libz80/codegen opcodes

7
emul/README.md
View File

@ -3,6 +3,11 @@
This folder contains a couple of tools running under the [libz80][libz80]
emulator.
## Requirements
You need `ncurses` to build the `forth` executable. In debian-based distros,
it's `libncurses5-dev`.
## Not real hardware
In the few emulated apps described below, we don't try to emulate real hardware
@ -20,7 +25,7 @@ First, make sure that the `libz80` git submodule is checked out. If not, run
After that, you can run `make` and it builds the `forth` interpreter.
Run `./forth` to get the COllapse OS prompt. Type `0 LIST` for help.
Run `./forth` to get the Collapse OS prompt. Type `0 LIST` for help.
## Problems?

78
emul/forth.c
View File

@ -1,6 +1,7 @@
#include <stdint.h>
#include <stdio.h>
#include <unistd.h>
#include <curses.h>
#include <termios.h>
#include "emul.h"
#include "forth-bin.h"
@ -24,7 +25,12 @@ static uint16_t blkid = 0;
static uint8_t iord_stdio()
{
int c = getc(fp);
int c;
if (fp != NULL) {
c = getc(fp);
} else {
c = getch();
}
if (c == EOF) {
c = 4; // ASCII EOT
}
@ -33,7 +39,13 @@ static uint8_t iord_stdio()
static void iowr_stdio(uint8_t val)
{
putchar(val);
if (fp != NULL) {
putchar(val);
} else {
if (val >= 0x20 || val == '\n') {
echochar(val);
}
}
}
static void iowr_ret(uint8_t val)
@ -69,34 +81,8 @@ static void iowr_blkdata(uint8_t val)
}
}
int main(int argc, char *argv[])
int run()
{
bool tty = false;
struct termios termInfo;
if (argc == 2) {
fp = fopen(argv[1], "r");
if (fp == NULL) {
fprintf(stderr, "Can't open %s\n", argv[1]);
return 1;
}
} else if (argc == 1) {
fp = stdin;
tty = isatty(fileno(stdin));
if (tty) {
// Turn echo off: the shell takes care of its own echoing.
if (tcgetattr(0, &termInfo) == -1) {
printf("Can't setup terminal.\n");
return 1;
}
termInfo.c_lflag &= ~ECHO;
termInfo.c_lflag &= ~ICANON;
tcsetattr(0, TCSAFLUSH, &termInfo);
}
} else {
fprintf(stderr, "Usage: ./forth [filename]\n");
return 1;
}
blkfp = fopen("blkfs", "r+");
if (blkfp) {
fprintf(stderr, "Using blkfs file\n");
@ -120,16 +106,34 @@ int main(int argc, char *argv[])
// Run!
while (emul_step());
if (tty) {
printf("\nDone!\n");
termInfo.c_lflag |= ECHO;
termInfo.c_lflag |= ICANON;
tcsetattr(0, TCSAFLUSH, &termInfo);
emul_printdebug();
}
if (blkfp != NULL) {
fclose(blkfp);
}
fclose(fp);
return retcode;
}
int main(int argc, char *argv[])
{
if (argc == 2) {
fp = fopen(argv[1], "r");
if (fp == NULL) {
fprintf(stderr, "Can't open %s\n", argv[1]);
return 1;
}
int ret = run();
fclose(fp);
return ret;
} else if (argc == 1) {
fp = NULL;
initscr(); cbreak(); noecho(); nl(); clear();
scrollok(stdscr, 1);
int ret = run();
nocbreak(); echo(); endwin();
printf("\nDone!\n");
emul_printdebug();
return ret;
} else {
fprintf(stderr, "Usage: ./forth [filename]\n");
return 1;
}
}