static void
dbgblock(Prog *p)
{
Osenv *o;
Progctl *ctl;
o = p->osenv;
ctl = o->debug;
qproduce(ctl->q, progstate[p->state], strlen(progstate[p->state]));
pushrun(p);
p->addrun = dbgaddrun;
o->rend = &up->sleep;
/*
* bdone(p) is safe after release because p is being debugged,
* so cannot exit.
*/
if(waserror()){
acquire();
nexterror();
}
release();
if(o->rend != nil)
Sleep(o->rend, bdone, p);
poperror();
acquire();
if(p->kill != nil)
error(p->kill);
ctl = o->debug;
if(ctl != nil)
qproduce(ctl->q, "run", 3);
}
void
gkbdputc(Queue *q, int ch)
{
int n;
Rune r;
static uchar kc[5*UTFmax];
static int nk, collecting = 0;
char buf[UTFmax];
r = ch;
if(r == Latin) {
collecting = 1;
nk = 0;
return;
}
if(collecting) {
int c;
nk += runetochar((char*)&kc[nk], &r);
c = latin1(kc, nk);
if(c < -1) /* need more keystrokes */
return;
collecting = 0;
if(c == -1) { /* invalid sequence */
qproduce(q, kc, nk);
return;
}
r = (Rune)c;
}
n = runetochar(buf, &r);
if(n == 0)
return;
/* if(!isdbgkey(r)) */
qproduce(q, buf, n);
}
/*
* called with ucb locked (and c locked if user initiated close)
*/
void
relhangup(Conv *c, Reliable *r)
{
int n;
Block *bp;
char hup[ERRMAX];
n = snprint(hup, sizeof(hup), "hangup %I!%d", r->addr, r->port);
qproduce(c->eq, hup, n);
/*
* dump any unacked outgoing messages
*/
for(bp = r->unacked; bp != nil; bp = r->unacked){
r->unacked = bp->list;
bp->list = nil;
freeb(bp);
}
r->rcvgen = 0;
r->rcvseq = 0;
r->acksent = 0;
if(generation == Hangupgen)
generation++;
r->sndgen = generation++;
r->sndseq = 0;
r->ackrcvd = 0;
r->xmits = 0;
r->timeout = 0;
wakeup(&r->vous);
}
/*
* Put character, possibly a rune, into read queue at interrupt time.
* Performs translation for compose sequences
* Called at interrupt time to process a character.
*/
int kbdputc(struct queue *q, int ch)
{
int n;
char buf[3];
Rune r;
static Rune kc[15];
static int nk, collecting = 0;
r = ch;
if (r == Latin) {
collecting = 1;
nk = 0;
return 0;
}
if (collecting) {
int c;
nk += runetochar((char *unused_char_p_t)&kc[nk], &r);
c = latin1(kc, nk);
if (c < -1) /* need more keystrokes */
return 0;
collecting = 0;
if (c == -1) { /* invalid sequence */
echo(kc[0], (char *unused_char_p_t)kc, nk);
qproduce(q, kc, nk);
return 0;
}
r = (Rune) c;
}
/* process individual kbd characters */
void readkbd(uv_stream_t* stream, ssize_t nread, const uv_buf_t *buf) {
char* ch;
int i;
for (ch=buf->base, i=0; i<nread; i++) {
if(nread < 0) {
print("keyboard close (n=%d, %s)\n", nread, strerror(errno));
}
switch(*ch) {
case '\r':
*ch = '\n';
break;
case DELETE:
*ch = '\b';
break;
}
if(kbd.raw == 0){
switch(*ch){
case 0x15:
write(1, "^U\n", 3);
break;
default:
write(1, ch, 1);
break;
}
}
qproduce(kbdq, ch, 1);
uv_async_send(&ev_conschar);
}
if (buf->base) {free(buf->base);}
}
static void
psauxputc(int c, int)
{
uchar uc;
uc = c;
qproduce(psauxq, &uc, 1);
}
static void
cmdproc(void *a)
{
Conv *c;
int n = 0;
char status[ERRMAX];
void *t = NULL;
c = a;
qlock(&c->l);
if(Debug)
print("f[0]=%q f[1]=%q\n", c->cmd->f[0], c->cmd->f[1]);
if(waserror()){
if(Debug)
print("failed: %q\n", up->errstr);
kstrdup(&c->error, up->errstr);
c->state = "Done";
qunlock(&c->l);
// Wakeup(&c->startr);
pexit("cmdproc", 0);
}
// t = oscmd(c->cmd->f+1, c->nice, c->dir, c->fd);
// if(t == nil)
// oserror();
c->child = t; /* to allow oscmdkill */
poperror();
qunlock(&c->l);
// Wakeup(&c->startr);
if(Debug)
print("started\n");
// while(waserror())
// oscmdkill(t);
// osenter();
mwait(&c->p->ac->icc->fn);
// n = oscmdwait(t, status, sizeof(status));
// osleave();
if(n < 0){
// oserrstr(up->genbuf, sizeof(up->genbuf));
n = snprint(status, sizeof(status), "0 0 0 0 %q", up->genbuf);
}
qlock(&c->l);
c->child = nil;
// oscmdfree(t);
if(Debug){
status[n]=0;
print("done %d %d %d: %q\n", c->fd[0], c->fd[1], c->fd[2], status);
}
if(c->inuse > 0){
c->state = "Done";
if(c->waitq != nil)
qproduce(c->waitq, status, n);
}else
closeconv(c);
qunlock(&c->l);
pexit("", 0);
}
/*
* Put character, possibly a rune, into read queue at interrupt time.
* Performs translation for compose sequences
* Called at interrupt time to process a character.
*/
int
kbdputc(Queue *q, int ch)
{
int n;
char buf[3];
Rune r;
static Rune kc[15];
static int nk, collecting = 0;
r = ch;
if(r == Latin) {
collecting = 1;
nk = 0;
return 0;
}
if(collecting) {
int c;
nk += runetochar((char*)&kc[nk], &r);
c = latin1(kc, nk);
if(c < -1) /* need more keystrokes */
return 0;
collecting = 0;
if(c == -1) { /* invalid sequence */
echo(kc[0], (char*)kc, nk);
qproduce(q, kc, nk);
return 0;
}
r = (Rune)c;
}
kbd.c = r;
n = runetochar(buf, &r);
if(n == 0)
return 0;
if(!isdbgkey(r)) {
echo(r, buf, n);
qproduce(q, buf, n);
}
return 0;
}
int
kprint(char *fmt, ...)
{
va_list arg;
char buf[PRINTSIZE];
int n;
va_start(arg, fmt);
n = vseprint(buf, buf+sizeof(buf), fmt, arg) - buf;
va_end(arg);
if(qfull(klogq))
qflush(klogq);
return qproduce(klogq, buf, n);
}
void
kbdslave(void *a)
{
char b;
USED(a);
for(;;) {
b = readkbd();
if(kbd.raw == 0)
write(1, &b, 1);
qproduce(kbdq, &b, 1);
}
pexit("kbdslave", 0);
}
static void
uartrecvq(Uart *p)
{
uchar *cp = p->istage;
int n = p->ip - cp;
if(n == 0)
return;
if(p->putc)
while(n-- > 0)
p->putc(p->iq, *cp++);
else if(p->iq)
if(qproduce(p->iq, p->istage, n) < n)
print("qproduce flow control");
p->ip = p->istage;
}
static int
isdbgkey(Rune r)
{
static int ctrlt;
Dbgkey *dp;
int echoctrlt = ctrlt;
/*
* ^t hack BUG
*/
if(dbg.on || (ctrlt >= 2)) {
if(r == 0x14 || r == 0x05) {
ctrlt++;
return 0;
}
if(dp = finddbgkey(r)) {
if(dp->i || ctrlt > 2)
dp->f(r);
else {
dbg.work = dp;
wakeup(&dbg);
}
ctrlt = 0;
return 1;
}
ctrlt = 0;
}
else if(r == 0x14){
ctrlt++;
return 1;
}
else
ctrlt = 0;
if(echoctrlt){
char buf[3];
buf[0] = 0x14;
while(--echoctrlt >= 0){
echo(buf[0], buf, 1);
qproduce(kbdq, buf, 1);
}
}
return 0;
}
void
dbgexit(Prog *kid, int broken, char *estr)
{
int n;
Osenv *e;
Progctl *ctl;
char buf[ERRMAX+20];
e = kid->osenv;
ctl = e->debug;
e->debug = nil;
kid->xec = xec;
if(broken)
n = snprint(buf, sizeof(buf), "broken: %s", estr);
else
n = snprint(buf, sizeof(buf), "exited");
if(ctl->debugger)
telldbg(ctl, buf);
qproduce(ctl->q, buf, n);
}
void
kbdslave(void *a)
{
char b;
USED(a);
for(;;) {
b = readkbd();
if(kbd.raw == 0){
switch(b){
case 0x15:
write(1, "^U\n", 3);
break;
default:
write(1, &b, 1);
break;
}
}
qproduce(kbdq, &b, 1);
}
/* pexit("kbdslave", 0); */ /* not reached */
}
/*
* Move data from the interrupt staging area to
* the input Queue.
*/
static void
uartstageinput(Uart *p)
{
int n;
uint8_t *ir, *iw;
while(p->ir != p->iw){
ir = p->ir;
if(p->ir > p->iw){
iw = p->ie;
p->ir = p->istage;
}
else{
iw = p->iw;
p->ir = p->iw;
}
if((n = qproduce(p->iq, ir, iw - ir)) < 0){
p->serr++;
(*p->phys->rts)(p, 0);
}
else if(n == 0)
p->berr++;
}
}
void
echo(char *buf, int n)
{
static int ctrlt;
int x;
char *e, *p;
if(n == 0)
return;
e = buf+n;
for(p = buf; p < e; p++){
switch(*p){
case 0x10: /* ^P */
if(cpuserver && !kbd.ctlpoff){
active.exiting = 1;
return;
}
break;
case 0x14: /* ^T */
ctrlt++;
if(ctrlt > 2)
ctrlt = 2;
continue;
}
if(ctrlt != 2)
continue;
/* ^T escapes */
ctrlt = 0;
switch(*p){
case 'S':
x = splhi();
dumpstack();
procdump();
splx(x);
return;
case 's':
dumpstack();
return;
case 'x':
xsummary();
ixsummary();
mallocsummary();
// memorysummary();
pagersummary();
return;
case 'd':
if(consdebug == nil)
consdebug = rdb;
else
consdebug = nil;
print("consdebug now 0x%p\n", consdebug);
return;
case 'D':
if(consdebug == nil)
consdebug = rdb;
consdebug();
return;
case 'p':
x = spllo();
procdump();
splx(x);
return;
case 'q':
scheddump();
return;
case 'k':
killbig("^t ^t k");
return;
case 'r':
exit(0);
return;
}
}
qproduce(kbdq, buf, n);
if(kbd.raw)
return;
kmesgputs(buf, n);
if(screenputs != nil)
echoscreen(buf, n);
uartecho(buf, n); // Plan 9 VX
}
static void echo(char *buf, int n)
{
static int ctrlt, pid;
char *e, *p;
if (n == 0)
return;
e = buf + n;
for (p = buf; p < e; p++) {
switch (*p) {
#if 0
case 0x10: /* ^P */
if (cpuserver && !kbd.ctlpoff) {
active.exiting = 1;
return;
}
break;
#endif
case 0x14: /* ^T */
ctrlt++;
if (ctrlt > 2)
ctrlt = 2;
continue;
}
if (ctrlt != 2)
continue;
/* ^T escapes */
ctrlt = 0;
switch (*p) {
#if 0
case 'S': {
int8_t x = 0;
disable_irqsave(&x);
dumpstack();
procdump();
enable_irqsave(&x);
return;
}
#endif
case 's':
dumpstack();
return;
#if 0
case 'x':
xsummary();
ixsummary();
mallocsummary();
memorysummary();
pagersummary();
return;
case 'd':
if (consdebug == NULL)
consdebug = rdb;
else
consdebug = NULL;
printd("consdebug now %#p\n", consdebug);
return;
case 'D':
if (consdebug == NULL)
consdebug = rdb;
consdebug();
return;
case 'p':
x = spllo();
procdump();
splx(x);
return;
case 'q':
scheddump();
return;
case 'k':
killbig("^t ^t k");
return;
#endif
case 'r':
exit(0);
return;
}
}
qproduce(kbdq, buf, n);
if (kbd.raw)
return;
kmesgputs(buf, n);
if (screenputs != NULL)
echoscreen(buf, n);
if (serialoq)
echoserialoq(buf, n);
}
void
dbgxec(Prog *p)
{
Bpt *b;
Prog *kid;
Osenv *env;
Progctl *ctl;
int op, pc, n;
char buf[ERRMAX+10];
extern void (*dec[])(void);
env = p->osenv;
ctl = env->debug;
ctl->ref++;
if(waserror()){
closedbgctl(ctl, p);
nexterror();
}
R = p->R;
R.MP = R.M->MP;
R.IC = p->quanta;
if((ulong)R.IC > ctl->step)
R.IC = ctl->step;
if(ctl->stop)
R.IC = 0;
buf[0] = '\0';
if(R.IC != 0 && R.M->compiled) {
comvec();
if(p != currun())
dbgblock(p);
goto save;
}
while(R.IC != 0) {
if(0)
print("step: %lux: %s %4ld %D\n",
(ulong)p, R.M->m->name, R.PC-R.M->prog, R.PC);
dec[R.PC->add]();
op = R.PC->op;
R.PC++;
optab[op]();
/*
* check notification about new progs
*/
if(op == ISPAWN || op == IMSPAWN) {
/* pick up the kid from the end of the run queue */
kid = delruntail(Pdebug);
n = snprint(buf, sizeof buf, "new %d", kid->pid);
qproduce(ctl->q, buf, n);
buf[0] = '\0';
}
if(op == ILOAD) {
n = snprint(buf, sizeof buf, "load %s", string2c(*(String**)R.s));
qproduce(ctl->q, buf, n);
buf[0] = '\0';
}
/*
* check for returns at big steps
*/
if(op == IRET)
R.IC = 1;
/*
* check for blocked progs
*/
if(R.IC == 1 && p != currun())
dbgblock(p);
if(ctl->stop)
R.IC = 1;
R.IC--;
if(ctl->bpts == nil)
continue;
pc = R.PC - R.M->prog;
for(b = ctl->bpts; b != nil; b = b->next) {
if(pc == b->pc &&
(strcmp(R.M->m->path, b->path) == 0 ||
strcmp(R.M->m->path, b->file) == 0)) {
strcpy(buf, "breakpoint");
goto save;
}
}
}
save:
if(ctl->stop)
strcpy(buf, "stopped");
p->R = R;
if(env->debug == nil) {
poperror();
return;
}
if(p == currun())
delrun(Pdebug);
telldbg(env->debug, buf);
poperror();
closedbgctl(env->debug, p);
}