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While we are here in alpha/stand, bail out on ^C during boot.

This commit is contained in:
ross 1998-09-22 00:41:13 +00:00
parent 071b4fc4d2
commit 5fb9c16f05
1 changed files with 27 additions and 4 deletions
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31
sys/arch/alpha/stand/common/prom.c
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@ -1,4 +1,4 @@
/* $NetBSD: prom.c,v 1.3 1997/09/06 14:03:58 drochner Exp $ */
/* $NetBSD: prom.c,v 1.4 1998/09/22 00:41:13 ross Exp $ */
/*
* Mach Operating System
@ -35,6 +35,8 @@
int console;
static int test_getchar(prom_return_t *, int *);
void
init_prom_calls()
{
@ -54,15 +56,28 @@ init_prom_calls()
console = buf[0] - '0';
}
static int
test_getchar(xret, xc)
prom_return_t *xret;
int *xc;
{
xret->bits = prom_dispatch(PROM_R_GETC, console);
*xc = xret->u.retval;
return xret->u.status == 0 || xret->u.status == 1;
}
int
getchar()
{
int c;
prom_return_t ret;
for (;;) {
ret.bits = prom_dispatch(PROM_R_GETC, console);
if (ret.u.status == 0 || ret.u.status == 1)
return (ret.u.retval);
if (test_getchar(&ret, &c)) {
if (c == 3)
halt();
return c;
}
}
}
@ -72,6 +87,7 @@ putchar(c)
{
prom_return_t ret;
char cbuf;
int typed_c;
if (c == '\r' || c == '\n') {
cbuf = '\r';
@ -85,6 +101,13 @@ putchar(c)
do {
ret.bits = prom_dispatch(PROM_R_PUTS, console, &cbuf, 1);
} while ((ret.u.retval & 1) == 0);
ret.bits = prom_dispatch(PROM_R_GETC, console);
if (ret.u.status == 0 || ret.u.status == 1)
if (ret.u.retval == 3)
halt();
if (test_getchar(&ret, &typed_c))
if (typed_c == 3)
halt();
}
int