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Save/restore curlwp on calling ROM_GETC() and ROM_PUTC() functions, 

which might break %s7 register.
This commit is contained in:
tsutsui 2007-08-25 00:25:44 +00:00
parent 8b381466db
commit 6c35be946a
1 changed files with 14 additions and 3 deletions
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17
sys/arch/ews4800mips/ews4800mips/cons_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: cons_machdep.c,v 1.3 2007/02/22 05:31:52 thorpej Exp $ */
/* $NetBSD: cons_machdep.c,v 1.4 2007/08/25 00:25:44 tsutsui Exp $ */
/*-
* Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cons_machdep.c,v 1.3 2007/02/22 05:31:52 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: cons_machdep.c,v 1.4 2007/08/25 00:25:44 tsutsui Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -118,6 +118,9 @@ void
rom_cnputc(dev_t dev, int c)
{
int i;
struct lwp *curlwp_save;
curlwp_save = curlwp;
switch (c) {
default:
@ -155,6 +158,8 @@ rom_cnputc(dev_t dev, int c)
break;
}
curlwp = curlwp_save;
if (cons.y == CONS_HEIGHT)
cons.y = Y_INIT;
}
@ -162,8 +167,14 @@ rom_cnputc(dev_t dev, int c)
int
rom_cngetc(dev_t dev)
{
int rval;
struct lwp *curlwp_save;
return ROM_GETC();
curlwp_save = curlwp;
rval = ROM_GETC();
curlwp = curlwp_save;
return rval;
}
void