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implement NO_GETCHAR, to remove getchar(), and NO_PUTCHAR_HALT to remove

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the check in putchar() for character input (specifically control-c, which
causes a halt).
This commit is contained in:
cgd 1999-03-31 03:34:21 +00:00
parent c5fa912232
commit 77a9cb81ff
1 changed files with 11 additions and 1 deletions
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12
sys/arch/alpha/stand/common/prom.c
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@ -1,4 +1,4 @@
/* $NetBSD: prom.c,v 1.7 1999/03/31 03:22:57 cgd Exp $ */
/* $NetBSD: prom.c,v 1.8 1999/03/31 03:34:21 cgd Exp $ */
/*
* Mach Operating System
@ -35,7 +35,9 @@
int console;
#if !defined(NO_GETCHAR) || !defined(NO_PUTCHAR_HALT)
static int test_getchar(int *);
#endif
static void putonechar(int c);
void
@ -57,6 +59,7 @@ init_prom_calls()
console = buf[0] - '0';
}
#if !defined(NO_GETCHAR) || !defined(NO_PUTCHAR_HALT)
static int
test_getchar(xc)
int *xc;
@ -67,7 +70,9 @@ test_getchar(xc)
*xc = ret.u.retval;
return ret.u.status == 0 || ret.u.status == 1;
}
#endif
#if !defined(NO_GETCHAR)
int
getchar()
{
@ -81,6 +86,7 @@ getchar()
}
}
}
#endif
static void
putonechar(c)
@ -98,16 +104,20 @@ void
putchar(c)
int c;
{
#if !defined(NO_PUTCHAR_HALT)
int typed_c;
#endif
if (c == '\r' || c == '\n') {
putonechar('\r');
c = '\n';
}
putonechar(c);
#if !defined(NO_PUTCHAR_HALT)
if (test_getchar(&typed_c))
if (typed_c == 3)
halt();
#endif
}
int