diff options
| author | paul <paul@FreeBSD.org> | 1994-08-23 11:57:19 +0000 |
|---|---|---|
| committer | paul <paul@FreeBSD.org> | 1994-08-23 11:57:19 +0000 |
| commit | 42b0369dee94a99e593555c54ebd793c9518cf7f (patch) | |
| tree | 4a124696cea61215a8336ea47c4f081019006f98 /sys | |
| parent | 8969df1ef1869c5e296b331c231c22d7f3004c1e (diff) | |
| download | FreeBSD-src-42b0369dee94a99e593555c54ebd793c9518cf7f.zip FreeBSD-src-42b0369dee94a99e593555c54ebd793c9518cf7f.tar.gz | |
I've disabled this piece of code since it's what's
hosing syscons. Doesn anyone know anything about this
or can we just delete it now?
/*
* This roundabout method of returning a u_char helps stop gcc-1.40 from
* generating unnecessary movzbl's.
*/
#ifdef disable_for_gcc-2_6_0
#define inb(port) ((u_char) u_int_inb(port))
#endif
static inline u_int
u_int_inb(u_int port)
{
u_char data;
/*
* We use %%dx and not %1 here because i/o is done at %dx and
not at
* %edx, while gcc-2.2.2 generates inferior code (movw instead
of movl)
* if we tell it to load (u_short) port.
*/
__asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
return data;
}
Reviewed by:
Submitted by:
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/amd64/include/cpufunc.h | 4 | ||||
| -rw-r--r-- | sys/i386/include/cpufunc.h | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h index 8c99782..12d1585 100644 --- a/sys/amd64/include/cpufunc.h +++ b/sys/amd64/include/cpufunc.h @@ -30,7 +30,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: cpufunc.h,v 1.16 1994/08/13 03:49:49 wollman Exp $ + * $Id: cpufunc.h,v 1.17 1994/08/18 22:34:46 wollman Exp $ */ /* @@ -74,7 +74,9 @@ enable_intr(void) * This roundabout method of returning a u_char helps stop gcc-1.40 from * generating unnecessary movzbl's. */ +#ifdef disable_for_gcc-2_6_0 #define inb(port) ((u_char) u_int_inb(port)) +#endif static inline u_int u_int_inb(u_int port) diff --git a/sys/i386/include/cpufunc.h b/sys/i386/include/cpufunc.h index 8c99782..12d1585 100644 --- a/sys/i386/include/cpufunc.h +++ b/sys/i386/include/cpufunc.h @@ -30,7 +30,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: cpufunc.h,v 1.16 1994/08/13 03:49:49 wollman Exp $ + * $Id: cpufunc.h,v 1.17 1994/08/18 22:34:46 wollman Exp $ */ /* @@ -74,7 +74,9 @@ enable_intr(void) * This roundabout method of returning a u_char helps stop gcc-1.40 from * generating unnecessary movzbl's. */ +#ifdef disable_for_gcc-2_6_0 #define inb(port) ((u_char) u_int_inb(port)) +#endif static inline u_int u_int_inb(u_int port) |
