Changeset 6de2480e in mainline for arch/ia32/src/fpu_context.c

Timestamp:

2005-05-19T11:55:15Z (20 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

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

Children:

f3ebb64

Parents:

1eee8383

Message:

IA-32 FPU lazy context switching.
Doesn't work on Bochs and sometimes produces wrong results on P4.
Seems to work on VMware and PII.

Build script for IA-32 changed to build floppy images (image.bin) 1440K long.

File:

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

arch/ia32/src/fpu_context.c

@@ -52 +52 @@
 void fpu_lazy_context_save(fpu_context_t *fctx)
 {
+    printf("");
     asm(
         "mov %0,%%eax;"
         "fxsave (%%eax);"
-        "ret;"
         :"=m"(fctx)
         :
-        :"%eax"
+        :"eax"
     );  
+    printf("");
 }
 
 void fpu_lazy_context_restore(fpu_context_t *fctx)
 {
+    printf("");
     asm(
         "mov %0,%%eax;"
         "fxrstor (%%eax);"
-        "ret;"
         :"=m"(fctx)
         :
-        :"%eax"
+        :"eax"
     );
+    printf("");    
 }