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Eliminate register restrictions where possible.

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This commit is contained in:
mycroft 1994-10-09 13:02:56 +00:00
parent 87041c0044
commit 47db98b4d9
1 changed files with 12 additions and 10 deletions
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22
sys/arch/i386/include/cpufunc.h
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@ -27,7 +27,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: cpufunc.h,v 1.5 1994/01/28 23:44:07 jtc Exp $
* $Id: cpufunc.h,v 1.6 1994/10/09 13:02:56 mycroft Exp $
*/
/*
@ -65,12 +65,6 @@ ltr(u_short sel)
__asm __volatile("ltr %0" : : "r" (sel));
}
static __inline void
tlbflush(void)
{
__asm __volatile("movl %%cr3,%%eax\n\tmovl %%eax,%%cr3" : : : "%eax");
}
static __inline void
lcr0(u_int val)
{
@ -81,7 +75,7 @@ static __inline u_int
rcr0(void)
{
u_int val;
__asm __volatile("movl %%cr0,%0" : "=a" (val));
__asm __volatile("movl %%cr0,%0" : "=r" (val));
return val;
}
@ -89,7 +83,7 @@ static __inline u_int
rcr2(void)
{
u_int val;
__asm __volatile("movl %%cr2,%0" : "=a" (val));
__asm __volatile("movl %%cr2,%0" : "=r" (val));
return val;
}
@ -103,10 +97,18 @@ static __inline u_int
rcr3(void)
{
u_int val;
__asm __volatile("movl %%cr3,%0" : "=a" (val));
__asm __volatile("movl %%cr3,%0" : "=r" (val));
return val;
}
static __inline void
tlbflush(void)
{
u_int val;
__asm __volatile("movl %%cr3,%0" : "=r" (val));
__asm __volatile("movl %0,%%cr3" : : "r" (val));
}
#ifdef notyet
void setidt __P((int idx, /*XXX*/caddr_t func, int typ, int dpl));
#endif