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Don't put operands in clobber lists, since this is dubious for old

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versions of gcc and broken for current versions of egcs.

Cleaned up the asm statement for do_cpuid() a little.

Submitted by:	"John S. Dyson" <dyson@iquest.net> but rewritten by me
This commit is contained in:
bde 1999-01-09 13:07:18 +00:00
parent cea612c782
commit 97a75ce742
2 changed files with 16 additions and 16 deletions
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16
sys/amd64/amd64/identcpu.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
* $Id: identcpu.c,v 1.54 1998/12/27 23:23:26 msmith Exp $
* $Id: identcpu.c,v 1.55 1999/01/08 16:29:56 bde Exp $
*/
#include "opt_cpu.h"
@ -106,13 +106,13 @@ do_cpuid(u_int ax, u_int *p)
{
__asm __volatile(
".byte 0x0f, 0xa2;"
"movl %%eax, (%%esi);"
"movl %%ebx, (4)(%%esi);"
"movl %%ecx, (8)(%%esi);"
"movl %%edx, (12)(%%esi);"
:
: "a" (ax), "S" (p)
: "ax", "bx", "cx", "dx"
"movl %%eax, (%2);"
"movl %%ebx, 4(%2);"
"movl %%ecx, 8(%2);"
"movl %%edx, 12(%2);"
: "=a" (ax)
: "0" (ax), "S" (p)
: "bx", "cx", "dx"
);
}

16
sys/i386/i386/identcpu.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
* $Id: identcpu.c,v 1.54 1998/12/27 23:23:26 msmith Exp $
* $Id: identcpu.c,v 1.55 1999/01/08 16:29:56 bde Exp $
*/
#include "opt_cpu.h"
@ -106,13 +106,13 @@ do_cpuid(u_int ax, u_int *p)
{
__asm __volatile(
".byte 0x0f, 0xa2;"
"movl %%eax, (%%esi);"
"movl %%ebx, (4)(%%esi);"
"movl %%ecx, (8)(%%esi);"
"movl %%edx, (12)(%%esi);"
:
: "a" (ax), "S" (p)
: "ax", "bx", "cx", "dx"
"movl %%eax, (%2);"
"movl %%ebx, 4(%2);"
"movl %%ecx, 8(%2);"
"movl %%edx, 12(%2);"
: "=a" (ax)
: "0" (ax), "S" (p)
: "bx", "cx", "dx"
);
}