Changeset 6a27d63 in mainline for arch/ia32/src/interrupt.c

Timestamp:

2005-05-11T21:53:09Z (20 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

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

Children:

c884ef1

Parents:

6ba143d

Message:

Finished FPU lazy context switching - first version. I have not tested it and there are many things which must be changed when
it runs first time OK.

File:

• arch/ia32/src/interrupt.c (modified) (1 diff)

arch/ia32/src/interrupt.c

@@ -86 +86 @@
 }
 
+void nm_fault(__u8 n, __u32 stack[])
+{
+
+        if (((CPU->arch).fpu_owner)!=NULL) 
+        {  
+                fpu_lazy_context_save(&(((CPU->arch).fpu_owner)->saved_fpu_context));
+                ((CPU->arch).fpu_owner)->fpu_context_engaged=0; /* Enables migration */
+        }
+        
+        if(THREAD->fpu_context_exists) fpu_lazy_context_restore(&(THREAD->saved_fpu_context));
+        else {fpu_init();THREAD->fpu_context_exists=1;}
+
+        (CPU->arch).fpu_owner=THREAD;
+
+        reset_TS_flag();
+        
+//      panic("#NM fault\n");
+}
+
+
+
 void page_fault(__u8 n, __u32 stack[])
 {