cosmopolitan/tool/build/tinyemu.c

62 lines
2.9 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/ex.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/x/x.h"
#include "tool/build/lib/loader.h"
#include "tool/build/lib/machine.h"
#include "tool/build/lib/syscall.h"
struct Machine m[1];
int main(int argc, char *argv[]) {
int rc;
struct Elf elf;
const char *codepath;
codepath = argv[1];
if (argc < 2) {
fputs("Usage: ", stderr);
fputs(argv[0], stderr);
fputs(" PROG [ARGS...]\n", stderr);
return EX_USAGE;
}
InitMachine(m);
LoadProgram(m, argv[1], argv + 2, environ, &elf);
m->fds.i = 3;
m->fds.n = 8;
m->fds.p = xcalloc(m->fds.n, sizeof(struct MachineFd));
m->fds.p[0].fd = STDIN_FILENO;
m->fds.p[0].cb = &kMachineFdCbHost;
m->fds.p[1].fd = STDOUT_FILENO;
m->fds.p[1].cb = &kMachineFdCbHost;
m->fds.p[2].fd = STDERR_FILENO;
m->fds.p[2].cb = &kMachineFdCbHost;
if (!(rc = setjmp(m->onhalt))) {
for (;;) {
LoadInstruction(m);
ExecuteInstruction(m);
}
} else {
return rc;
}
}