[Qemu-devel] [patch] m68k updates #3

[Qemu-devel] [patch] m68k updates #3

[Richard Zidlicky]

Hi,

this is another patch where I could use some advice.
m68k has hw support for "long double" so I thought
I could easilly improve performance a little bit and
get better precision by using them.

Appended patch shows how I was trying to do this, but
there must be something else I have missed because
regression tests dont work..

Anyway, the change might be usefull if someone else
attempts to do the same for some other arch.

Richard

diff -urN qemu-cvs/target-i386/cpu.h qemu-cvs-new/target-i386/cpu.h
--- qemu-cvs/target-i386/cpu.h	Thu Feb 26 00:14:19 2004
+++ qemu-cvs-new/target-i386/cpu.h	Wed Mar 17 18:39:40 2004
@@ -252,7 +252,8 @@
     CC_OP_NB,
 };
 
-#ifdef __i386__
+/* should work for m68k as well but needs more work somewhere */
+#if defined(__i386__) //|| defined (__mc68000)
 #define USE_X86LDOUBLE
 #endif
 
diff -urN qemu-cvs/target-i386/exec.h qemu-cvs-new/target-i386/exec.h
--- qemu-cvs/target-i386/exec.h	Thu Feb 26 00:26:33 2004
+++ qemu-cvs-new/target-i386/exec.h	Wed Mar 17 18:39:39 2004
@@ -440,7 +440,7 @@
 
 /* XXX: same endianness assumed */
 
-#ifdef CONFIG_USER_ONLY
+#if defined(CONFIG_USER_ONLY) && defined (__i386__)
 
 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
 {