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Fixed context switching of FPU state after a fault in

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i586_optimized_copyin/out.
This commit is contained in:
bde 1997-01-04 13:56:18 +00:00
parent 1fc3295f28
commit 96974e95d6
3 changed files with 60 additions and 9 deletions
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23
sys/amd64/amd64/support.S
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: support.s,v 1.44 1996/11/12 14:54:16 bde Exp $
* $Id: support.s,v 1.45 1996/11/29 14:32:30 bde Exp $
*/
#include "opt_cpu.h"
@ -893,8 +893,6 @@ ENTRY(fastmove)
pushl %ebp
movl %esp,%ebp
subl $PCB_SAVEFPU_SIZE+3*4,%esp
movl _curpcb,%eax
movl $fastmove_fault,PCB_ONFAULT(%eax)
movl 8(%ebp),%ecx
cmpl $63,%ecx
@ -944,6 +942,8 @@ ENTRY(fastmove)
/* npxproc = curproc; */
movl _curproc,%eax
movl %eax,_npxproc
movl _curpcb,%eax
movl $fastmove_fault,PCB_ONFAULT(%eax)
4:
movl %ecx,-12(%ebp)
cmpl $1792,%ecx
@ -1024,6 +1024,9 @@ fastmove_loop:
ALIGN_TEXT
fastmove_tail:
movl _curpcb,%eax
movl $fastmove_tail_fault,PCB_ONFAULT(%eax)
movb %cl,%al
shrl $2,%ecx /* copy longword-wise */
cld
@ -1040,6 +1043,20 @@ fastmove_tail:
ALIGN_TEXT
fastmove_fault:
movl _curpcb,%edi
addl $PCB_SAVEFPU,%edi
movl %esp,%esi
cld
movl $PCB_SAVEFPU_SIZE>>2,%ecx
rep
movsl
smsw %ax
orb $CR0_TS,%al
lmsw %ax
movl $0,_npxproc
fastmove_tail_fault:
movl %ebp,%esp
popl %ebp
addl $8,%esp

23
sys/amd64/amd64/support.s
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: support.s,v 1.44 1996/11/12 14:54:16 bde Exp $
* $Id: support.s,v 1.45 1996/11/29 14:32:30 bde Exp $
*/
#include "opt_cpu.h"
@ -893,8 +893,6 @@ ENTRY(fastmove)
pushl %ebp
movl %esp,%ebp
subl $PCB_SAVEFPU_SIZE+3*4,%esp
movl _curpcb,%eax
movl $fastmove_fault,PCB_ONFAULT(%eax)
movl 8(%ebp),%ecx
cmpl $63,%ecx
@ -944,6 +942,8 @@ ENTRY(fastmove)
/* npxproc = curproc; */
movl _curproc,%eax
movl %eax,_npxproc
movl _curpcb,%eax
movl $fastmove_fault,PCB_ONFAULT(%eax)
4:
movl %ecx,-12(%ebp)
cmpl $1792,%ecx
@ -1024,6 +1024,9 @@ fastmove_loop:
ALIGN_TEXT
fastmove_tail:
movl _curpcb,%eax
movl $fastmove_tail_fault,PCB_ONFAULT(%eax)
movb %cl,%al
shrl $2,%ecx /* copy longword-wise */
cld
@ -1040,6 +1043,20 @@ fastmove_tail:
ALIGN_TEXT
fastmove_fault:
movl _curpcb,%edi
addl $PCB_SAVEFPU,%edi
movl %esp,%esi
cld
movl $PCB_SAVEFPU_SIZE>>2,%ecx
rep
movsl
smsw %ax
orb $CR0_TS,%al
lmsw %ax
movl $0,_npxproc
fastmove_tail_fault:
movl %ebp,%esp
popl %ebp
addl $8,%esp

23
sys/i386/i386/support.s
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: support.s,v 1.44 1996/11/12 14:54:16 bde Exp $
* $Id: support.s,v 1.45 1996/11/29 14:32:30 bde Exp $
*/
#include "opt_cpu.h"
@ -893,8 +893,6 @@ ENTRY(fastmove)
pushl %ebp
movl %esp,%ebp
subl $PCB_SAVEFPU_SIZE+3*4,%esp
movl _curpcb,%eax
movl $fastmove_fault,PCB_ONFAULT(%eax)
movl 8(%ebp),%ecx
cmpl $63,%ecx
@ -944,6 +942,8 @@ ENTRY(fastmove)
/* npxproc = curproc; */
movl _curproc,%eax
movl %eax,_npxproc
movl _curpcb,%eax
movl $fastmove_fault,PCB_ONFAULT(%eax)
4:
movl %ecx,-12(%ebp)
cmpl $1792,%ecx
@ -1024,6 +1024,9 @@ fastmove_loop:
ALIGN_TEXT
fastmove_tail:
movl _curpcb,%eax
movl $fastmove_tail_fault,PCB_ONFAULT(%eax)
movb %cl,%al
shrl $2,%ecx /* copy longword-wise */
cld
@ -1040,6 +1043,20 @@ fastmove_tail:
ALIGN_TEXT
fastmove_fault:
movl _curpcb,%edi
addl $PCB_SAVEFPU,%edi
movl %esp,%esi
cld
movl $PCB_SAVEFPU_SIZE>>2,%ecx
rep
movsl
smsw %ax
orb $CR0_TS,%al
lmsw %ax
movl $0,_npxproc
fastmove_tail_fault:
movl %ebp,%esp
popl %ebp
addl $8,%esp