Changeset af22f158 in mainline for arch/ia32/src/fpu_context.c

Timestamp:

2005-05-19T20:29:08Z (20 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

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

Children:

c01bd280

Parents:

bc4a49f

Message:

Set TS flag on system startup.
Some bugs in FPU context switching seem to persist.
Optimalization on IA-32 disabled.

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);"
-        :"=m"(fctx)
-        :
-        :"eax"
-    );  
-    printf("");
+        asm
+        (
+                "push %%eax;"
+                "mov 0x8(%%esp),%%eax;"
+                "fnsave (%%eax);"
+                "pop %%eax;"
+                :"=m"(fctx)
+                :
+                :"eax"
+        );      
 }
 
 void fpu_lazy_context_restore(fpu_context_t *fctx)
 {
-    printf("");
-    asm(
-        "mov %0,%%eax;"
-        "fxrstor (%%eax);"
-        :"=m"(fctx)
-        :
-        :"eax"
-    );
-    printf("");    
+        asm
+        (
+                "push %%eax;"
+                "mov 0x8(%%esp),%%eax;"
+                "frstor (%%eax);"
+                "pop %%eax;"
+                :"=m"(fctx)
+                :
+                :"eax"
+        );
 }