Changeset aa4e8d7 in mainline for arch/ia32/src/context.s

Timestamp:

2005-05-08T13:59:59Z (20 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

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

Children:

be50915

Parents:

e9b9e12

Message:

Remove fpu_context pointer from context_t.
Add fpu_context statically to thread_t.
Two functions for saving and restoring FPU context on lazy switch.

File:

• arch/ia32/src/context.s (modified) (2 diffs)

arch/ia32/src/context.s

@@ -31 +31 @@
 .global context_save
 .global context_restore
+
 
 #
@@ -74 +75 @@
         xorl %eax,%eax          # context_restore returns 0
         ret
+
+
+.global fpu_context_save
+fpu_context_save:
+    ret
+.global fpu_context_restore
+fpu_context_restore:
+    ret
+
+.global fpu_lazy_context_save
+    mov 4(%esp),%eax;
+    fxsave (%eax)
+    xor %eax,%eax;
+    ret;
+.global fpu_lazy_context_restore
+    mov 4(%esp),%eax;
+    fxrstor (%eax)
+    xor %eax,%eax;
+    ret;
+