fix numerous bugs, add tty controls, etc
This commit is contained in:
parent
05cf2c6ef3
commit
8ddc1b7676
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@ -63,6 +63,8 @@ for a host-put (0x1f). the meaning values by host-put value:
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- 0x01 - (execute) command string (e.g. 'gcc -o "demo" demo.c')
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- 0x02 - (getpid) unused
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- 0x03 - (kill) unused
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- 0x04 - (raw-tty) unused
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- 0x04 - (restore-tty) unused
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- 0x10 - (getenv) name string (e.g. "TERM")
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- 0x11 - (setenv) assignment string (e.g. "TERM=vt100")
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strings must be null-terminated. commands are parsed by /bin/sh -c.
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@ -86,6 +88,8 @@ the host-put port (0x1f) specifies which host action to take:
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- 0x01 - execute: reads command string, starts a subprocess
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- 0x02 - getpid: responds with child process pid (if any)
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- 0x03 - kill: shuts down child process
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- 0x04 - put stdin tty into raw mode
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- 0x05 - restore stdin tty to canonical mode
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- 0x10 - getenv: looks up a name (e.g. TERM) in env, responds with value
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- 0x11 - setenv: reads an assignment (e.g. TERM=vt100), updates env
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@ -7,6 +7,7 @@
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#include <stdlib.h>
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#include <sys/select.h>
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#include <sys/wait.h>
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#include <termios.h>
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#include <unistd.h>
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#ifdef __linux
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@ -32,27 +33,28 @@ 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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UxnSubprocess children[CONSOLE_MAX_CHILDREN];
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static char *fork_args[4] = {"/bin/sh", "-c", "", NULL};
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static int to_child_fd[2], from_child_fd[2];
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static char buf[16];
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static UxnSubprocess*
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find_child_by_pid(pid_t pid)
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{
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for(int n = 0; n < CONSOLE_MAX_CHILDREN; n++) {
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if(children[n].pid == pid)
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return &children[n];
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}
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return NULL;
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}
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#define child_ptys(mode) (mode & CONSOLE_MODE_PTY)
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#define child_reads(mode) (mode & CONSOLE_CHILD_READS)
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#define child_writes(mode) (mode & CONSOLE_CHILD_WRITES)
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#define child_writes_out(mode) (mode & CONSOLE_MODE_OUT)
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#define child_writes_err(mode) (mode & CONSOLE_MODE_ERR)
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UxnSubprocess children[CONSOLE_MAX_CHILDREN];
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static char *fork_args[4] = {"/bin/sh", "-c", "", NULL};
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static int to_child_fd[2], from_child_fd[2];
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static char buf[16];
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static int raw_tty = 0;
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struct termios old_termios;
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static UxnSubprocess*
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find_child_by_pid(pid_t pid)
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{
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for(int n = 0; n < CONSOLE_MAX_CHILDREN; n++)
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if(children[n].pid == pid)
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return &children[n];
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return NULL;
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}
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static void
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handle_sigchld(int sig)
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{
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@ -61,13 +63,16 @@ handle_sigchld(int sig)
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while((pid = waitpid(-1, &wstatus, WNOHANG)) > 0) {
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UxnSubprocess *child = find_child_by_pid(pid);
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if (child != NULL) {
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/* set running to negative when exiting for clean up */
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child->running = WEXITSTATUS(wstatus) - 256;
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/* close relevant file descriptors */
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if(child_ptys(child->mode))
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close(child->pty);
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else {
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if(child_reads(child->mode)) close(child->fd_in);
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if(child_writes(child->mode)) close(child->fd_out);
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}
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/* reset fields to starting values */
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child->pid = child->mode = 0;
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child->fd_out = child->fd_in = child->pty = -1;
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return;
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@ -79,7 +84,7 @@ static void
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start_fork_pty(UxnSubprocess *child, int mode)
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{
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int fd = -1;
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struct winsize ws = {23, 80, 8, 12}; // rows, cols, xps, ypx
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struct winsize ws = {23, 80, 8, 12};
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pid_t pid = forkpty(&fd, NULL, NULL, &ws);
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if(pid < 0) { /* failure */
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fprintf(stderr, "parent fork failure\n");
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@ -95,6 +100,7 @@ start_fork_pty(UxnSubprocess *child, int mode)
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child->fd_in = fd;
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child->fd_out = fd;
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} while (child->pid != pid);
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/* loop to avoid possible race with clean up */
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}
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}
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@ -120,6 +126,7 @@ start_fork_pipe(UxnSubprocess *child, int mode)
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pid_t pid = fork();
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if(pid < 0) { /* failure */
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fprintf(stderr, "fork failure\n");
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return;
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} else if(pid == 0) { /* child */
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if(child_reads(mode)) {
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dup2(to_child_fd[0], 0);
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@ -142,6 +149,9 @@ start_fork_pipe(UxnSubprocess *child, int mode)
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child->fd_in = child_reads(mode) ? to_child_fd[1] : -1;
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child->fd_out = child_writes(mode) ? from_child_fd[0] : -1;
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} while (child->pid != pid);
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/* loop to avoid possible race with clean up */
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/* close the unused end of pipes we opened */
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if(child_reads(mode)) close(to_child_fd[0]);
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if(child_writes(mode)) close(from_child_fd[1]);
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}
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@ -173,7 +183,7 @@ host_execute(Uxn *u, Uint8 *d)
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UxnSubprocess *child = &children[opts & 0x3];
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fork_args[2] = cmd;
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if(child->pid)
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if(child->pid > 0)
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kill(child->pid, 9);
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if(opts >= 0x80)
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@ -202,13 +212,42 @@ static void
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host_kill(Uxn *u, Uint8 *d)
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{
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int n = d[0xe] & 0x3;
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if(children[n].pid > 0)
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kill(children[n].pid, 15);
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}
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static void
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host_raw_tty()
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{
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if(!raw_tty) {
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tcgetattr(STDIN_FILENO, &old_termios);
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struct termios term = old_termios;
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/* corresponds to `stty raw -echo` */
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term.c_cflag |= (CS8);
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term.c_iflag &= ~(IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP);
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term.c_iflag &= ~(INLCR | IGNCR | ICRNL | IXON | IXOFF | IUCLC | IXANY | IMAXBEL);
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term.c_lflag &= ~(ICANON | ISIG | ECHO);
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term.c_oflag &= ~(OPOST);
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term.c_cc[VMIN] = 0;
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term.c_cc[VTIME] = 1;
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tcsetattr(0, TCSAFLUSH, &term);
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raw_tty = 1;
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}
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}
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static void
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host_restore_tty()
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{
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if(raw_tty) {
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tcsetattr(0, TCSAFLUSH, &old_termios);
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raw_tty = 0;
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}
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}
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static void
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host_getenv(Uxn *u, Uint8 *d)
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{
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int addr = PEEK2(d + 0x3);
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int addr = PEEK2(d + 0xc);
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char *name = (char *)&u->ram[addr];
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host_response(u, getenv(name));
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}
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@ -216,23 +255,29 @@ host_getenv(Uxn *u, Uint8 *d)
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static void
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host_setenv(Uxn *u, Uint8 *d)
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{
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int addr = PEEK2(d + 0x3);
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int addr = PEEK2(d + 0xc);
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char *name = (char *)&u->ram[addr];
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int i = 0;
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while(name[i] != '=') i++;
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if(name[i] == '=') {
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name[i] = '\0';
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char *value = &name[i+1];
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setenv(name, value, 1);
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} else {
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fprintf(stderr, "mal-formed setenv\n");
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}
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}
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static void
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host_put(Uxn *u, Uint8 *d)
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{
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switch(d[0xf]) {
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case 0x0: /* nop */ break;
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case 0x1: host_execute(u, d); break;
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case 0x2: host_getpid(u, d); break;
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case 0x3: host_kill(u, d); break;
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case 0x00: /* nop */ break;
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case 0x01: host_execute(u, d); break;
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case 0x02: host_getpid(u, d); break;
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case 0x03: host_kill(u, d); break;
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case 0x04: host_raw_tty(); break;
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case 0x05: host_restore_tty(); break;
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case 0x10: host_getenv(u, d); break;
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case 0x11: host_setenv(u, d); break;
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}
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@ -266,7 +311,7 @@ UxnSubprocess
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void
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console_monitor(Uxn *u)
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{
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fflush(stdout);
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/*fflush(stdout);*/ /* TODO: needed? stderr? children? */
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for(int n = 0; n < CONSOLE_MAX_CHILDREN; n++) {
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UxnSubprocess *child = &children[n];
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if(child->running < 0) {
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@ -277,7 +322,6 @@ console_monitor(Uxn *u)
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}
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}
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// TODO ignore port
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int
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console_input(Uxn *u, char c, int type)
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{
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@ -47,8 +47,11 @@ void console_deo(Uxn *u, Uint8 *d, Uint8 port);
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#define CONSOLE_MODE_OUT 0x20
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#define CONSOLE_MODE_INP 0x10
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#define CONSOLE_CHILD_READS 0x90 /* CONSOLE_MODE_PTY | CONSOLE_MODE_INP */
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#define CONSOLE_CHILD_WRITES 0xe0 /* CONSOLE_MODE_PTY | CONSOLE_MODE_OUT | CONSOLE_MODE_ERR */
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/* CONSOLE_MODE_PTY | CONSOLE_MODE_INP */
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#define CONSOLE_CHILD_READS 0x90
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/* CONSOLE_MODE_PTY | CONSOLE_MODE_OUT | CONSOLE_MODE_ERR */
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#define CONSOLE_CHILD_WRITES 0xe0
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#define CONSOLE_MAX_CHILDREN 4
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11
src/uxn11.c
11
src/uxn11.c
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@ -268,17 +268,14 @@ emu_run(Uxn *u, char *rom)
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timerfd_settime(fds[1].fd, 0, &screen_tspec, NULL);
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fds[2].fd = STDIN_FILENO;
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fds[0].events = fds[1].events = fds[2].events = POLLIN;
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for(i = 0; i < 4; i++) {
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fds[i + 3].fd = get_child(i)->fd_out;
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fds[i + 3].events = POLLIN;
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}
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/* main loop */
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while(!u->dev[0x0f]) {
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for(i = 0; i < 4; i++) {
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for(i = 0; i < CONSOLE_MAX_CHILDREN; i++) {
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fds[i + 3].fd = get_child(i)->fd_out;
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fds[i + 3].events = POLLIN;
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}
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if(poll(fds, 7, 1000) <= 0)
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if(poll(fds, 3 + CONSOLE_MAX_CHILDREN, 1000) <= 0)
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continue;
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while(XPending(display))
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emu_event(u);
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@ -297,7 +294,7 @@ emu_run(Uxn *u, char *rom)
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handle_input(u, fds[2], coninp, CONSOLE_STDIN, CONSOLE_STDIN_END);
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/* read input from child processes */
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for(i = 0; i < 4; i++)
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for(i = 0; i < CONSOLE_MAX_CHILDREN; i++)
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handle_input(u, fds[i + 3], coninp, CONSOLE_CHILD_DATA | i, CONSOLE_CHILD_END | i);
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/* check to see if any children exited */
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@ -171,16 +171,12 @@
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#01 .Console/host-put DEO JMP2r
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( restore the terminal to "normal" settings )
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@restore-terminal
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;stty-sane !run-cmd
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@restore-terminal ( -> )
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#05 .Console/host-put DEO JMP2r
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( put the terminal in raw mode )
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@init-terminal ( -> )
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;stty-raw !run-cmd
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( command strings to use )
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@stty-sane "stty 20 "sane 00
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@stty-raw "stty 20 "raw 20 "-echo 00
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#04 .Console/host-put DEO JMP2r
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( import uxn regex library )
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~regex.tal
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@ -487,11 +483,7 @@
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( )
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( this definition is needed so the address can be used by JCN2. )
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@quit-now
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;finish-quit .Console/vector DEO2
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restore-terminal BRK
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@finish-quit
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.Console/type DEI #81 NEQ ?{ #80 .System/halt DEO } BRK
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restore-terminal #010f DEO BRK
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( label that calls BRK )
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( )
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@ -409,7 +409,6 @@
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( send ESC [ $c )
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@arrow ( c^ -> )
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( .Console/w STH )
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.Console/proc-put STH
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#1b STHkr DEO LIT "[ STHkr DEO STHr DEO
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JMP2r
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@ -417,12 +416,10 @@
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@paste-from-buf ( size* -> )
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;paste-buf SWP2 OVR2 ADD2 SWP2 ( limit* start* )
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&loop ( limit* pos* )
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( LDAk .Console/w DEO INC2 ( limit* pos+1* ) )
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LDAk .Console/proc-put DEO INC2 ( limit* pos+1* )
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GTH2k ?&loop POP2 POP2 JMP2r
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@bracket-paste ( c^ -> )
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( .Console/w STH )
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.Console/proc-put STH
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#1b STHkr DEO
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LIT "[ STHkr DEO
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@ -638,7 +635,6 @@
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.Controller/key DEI
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DUP #08 NEQ ?&done
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POP #7f ( send DEL instead of BS )
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( &done .Console/w DEO BRK )
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&done .Console/proc-put DEO BRK
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@ctrl ( -> is-down? ) .Controller/button DEI #01 AND JMP2r
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@ -646,10 +642,8 @@
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( alt-XYZ emits ESC and then emits XYZ )
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@on-alt-key ( -> BRK )
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( #1b .Console/w DEO )
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#1b .Console/proc-put DEO
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ctrl ?on-ctrl-key
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( .Controller/key DEI .Console/w DEO BRK )
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.Controller/key DEI .Console/proc-put DEO BRK
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( control seqs: )
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@ -685,7 +679,6 @@
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&rs #1e !&done
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&us #1f !&done
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&c1 LIT "@ SUB
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( &done .Console/w DEO BRK )
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&done .Console/proc-put DEO BRK
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@on-read-priv ( -> BRK )
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@ -911,15 +904,11 @@
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@dsr ( n* -> )
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#0006 NEQ2 ?&done
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( #1b .Console/w DEO )
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#1b .Console/proc-put DEO
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( LIT "[ .Console/w DEO )
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LIT "[ .Console/proc-put DEO
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.cur-y LDZ2 INC2 emit-dec2
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( LIT "; .Console/w DEO )
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LIT "; .Console/proc-put DEO
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.cur-x LDZ2 INC2 emit-dec2
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( LIT "R .Console/w DEO )
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LIT "R .Console/proc-put DEO
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&done BRK
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@ -1300,14 +1289,21 @@
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( emit a signed short as a decimal )
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@emit-sdec2 ( n* -> )
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DUP2k #1f SFT2 EQUk ?&s LIT2 "- 18 DEO
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DUP2k #1f SFT2 EQUk ?&s LIT "- .Console/proc-put DEO
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&s MUL2 SUB2 ( fall-through to emit-dec2 )
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( emit an unsigned short as a decimal )
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@emit-dec2 ( n* -> )
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LITr ff00 &read #000a DIV2k STH2k MUL2 SUB2 STH2r INCr ORAk ?&read
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POP2 &write NIP #30 ADD #18 DEO OVRr ADDr STHkr ?&write
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POP2r JMP2r
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LIT2r ff00 ( n* [ff^ 0^] )
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&read ( ... x* )
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#000a DIV2k STH2k ( x* 10* x/10* [ff^ i^ x/10*] )
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MUL2 SUB2 STH2r ( x%10* x/10* [ff^ i^] )
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INCr ORAk ?&read ( x%10* x/10* [ff^ i+1^] )
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POP2 ( x0* ... xn* [ff^ i+1^] )
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&write
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NIP #30 ADD .Console/proc-put DEO ( x0* ... xn-1* [ff^ j^] )
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OVRr ADDr STHkr ?&write ( x* ... xn-1* [ff^ j-1^] )
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POP2r JMP2r ( )
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@debug-log "debug_term.log 00
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@scratch $40 &pos $2
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