mirror of
https://github.com/hsoft/collapseos.git
synced 2024-12-03 01:58:06 +11:00
a8e573c84a
Big one. This allows us to write higher order words directly in Forth, which is much more convenient than writing post-immediate (see "NOT" structure in diff if you want to see what I mean) structures in ASM. These structures can then be written to ROM (rather than loaded in RAM for definitions loaded at run-time). That's quite a bit of tooling that was added, 2 compilations stages, but I think it's well worth it.
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <termios.h>
|
|
#include "../emul.h"
|
|
#include "forth1-bin.h"
|
|
|
|
// in sync with glue.asm
|
|
#define RAMSTART 0x900
|
|
#define STDIO_PORT 0x00
|
|
|
|
static int running;
|
|
static FILE *fp;
|
|
|
|
static uint8_t iord_stdio()
|
|
{
|
|
int c = getc(fp);
|
|
if (c == EOF) {
|
|
running = 0;
|
|
}
|
|
return (uint8_t)c;
|
|
}
|
|
|
|
static void iowr_stdio(uint8_t val)
|
|
{
|
|
if (val == 0x04) { // CTRL+D
|
|
running = 0;
|
|
} else {
|
|
putchar(val);
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
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;
|
|
}
|
|
Machine *m = emul_init();
|
|
m->ramstart = RAMSTART;
|
|
m->iord[STDIO_PORT] = iord_stdio;
|
|
m->iowr[STDIO_PORT] = iowr_stdio;
|
|
// initialize memory
|
|
for (int i=0; i<sizeof(KERNEL); i++) {
|
|
m->mem[i] = KERNEL[i];
|
|
}
|
|
// Run!
|
|
running = 1;
|
|
|
|
while (running && emul_step());
|
|
|
|
if (tty) {
|
|
printf("\nDone!\n");
|
|
termInfo.c_lflag |= ECHO;
|
|
termInfo.c_lflag |= ICANON;
|
|
tcsetattr(0, TCSAFLUSH, &termInfo);
|
|
emul_printdebug();
|
|
}
|
|
fclose(fp);
|
|
return 0;
|
|
}
|