Changeset b49f4ae in mainline for arch/amd64/src/interrupt.c

Timestamp:

2005-09-06T09:56:26Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

50a4e25

Parents:

a5d1331

Message:

Added architecture independent hooks for fpu lazy context switching.
It is enabled by defining FPU_LAZY

File:

• arch/amd64/src/interrupt.c (modified) (2 diffs)

arch/amd64/src/interrupt.c

@@ -39 +39 @@
 #include <symtab.h>
 #include <arch/asm.h>
-
+#include <proc/scheduler.h>
 
 
@@ -139 +139 @@
 void nm_fault(__u8 n, __native stack[])
 {
-        reset_TS_flag();
-        if (CPU->fpu_owner != NULL) {  
-                fpu_lazy_context_save(&CPU->fpu_owner->saved_fpu_context);
-                /* don't prevent migration */
-                CPU->fpu_owner->fpu_context_engaged=0; 
-        }
-        if (THREAD->fpu_context_exists)
-                fpu_lazy_context_restore(&THREAD->saved_fpu_context);
-        else {
-                fpu_init();
-                THREAD->fpu_context_exists=1;
-        }
-        CPU->fpu_owner=THREAD;
-        THREAD->fpu_context_engaged = 1;
+#ifdef FPU_LAZY     
+        scheduler_fpu_lazy_request();
+#else
+        panic("fpu fault");
+#endif
 }