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Change outb() as per Bruce's instructions so that it doesn't explicitly

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try to pass its argument in the ax register.
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Jordan K. Hubbard 1994-08-11 02:26:08 +00:00
parent 2399a1589e
commit f9f0c18d31
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=2028
2 changed files with 4 additions and 4 deletions
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4
sys/amd64/include/cpufunc.h
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@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cpufunc.h,v 1.13 1994/08/02 07:38:43 davidg Exp $
* $Id: cpufunc.h,v 1.14 1994/08/04 19:46:57 davidg Exp $
*/
/*
@ -92,7 +92,7 @@ u_int_inb(u_int port)
static inline void
outb(u_int port, u_char data)
{
register u_char al asm("ax");
u_char al;
al = data; /* help gcc-1.40's register allocator */
__asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));

4
sys/i386/include/cpufunc.h
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cpufunc.h,v 1.13 1994/08/02 07:38:43 davidg Exp $
* $Id: cpufunc.h,v 1.14 1994/08/04 19:46:57 davidg Exp $
*/
/*
@ -92,7 +92,7 @@ u_int_inb(u_int port)
static inline void
outb(u_int port, u_char data)
{
register u_char al asm("ax");
u_char al;
al = data; /* help gcc-1.40's register allocator */
__asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));