[Qemu-devel] [PATCH 090/111] m68k: correctly define and manage NaN

[Bryce Lanham <blanham@gmail.com>]

From: Laurent Vivier <laurent@vivier.eu>

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 fpu/softfloat-specialize.h |    5 +++++
 target-m68k/helper.c       |   12 +++++-------
 target-m68k/translate.c    |    1 -
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index e051549..4a4863c 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -85,9 +85,14 @@ const float64 float64_default_nan = const_float64(LIT64( 0xFFF8000000000000 ));
 #define floatx80_default_nan_high 0x7FFF
 #define floatx80_default_nan_low  LIT64( 0xBFFFFFFFFFFFFFFF )
 #else
+#if defined(TARGET_M68K)
+#define floatx80_default_nan_high 0x7FFF
+#define floatx80_default_nan_low  LIT64( 0xFFFFFFFFFFFFFFFF )
+#else
 #define floatx80_default_nan_high 0xFFFF
 #define floatx80_default_nan_low  LIT64( 0xC000000000000000 )
 #endif
+#endif
 
 const floatx80 floatx80_default_nan = make_floatx80(floatx80_default_nan_high,
                                                     floatx80_default_nan_low);
diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index 533f33b..4edbc90 100644
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -23,7 +23,6 @@
 
 #include "config.h"
 #include "cpu.h"
-#include "exec.h"
 #include "qemu-common.h"
 #include "gdbstub.h"
 
@@ -272,13 +271,12 @@ void cpu_reset(CPUM68KState *env)
     m68k_switch_sp(env);
 
     for (i = 0; i < 8; i++) {
-        env->fregs[i].l.upper = floatx80_default_nan_high;
-        env->fregs[i].l.lower = 0xffffffffffffffffULL;
+        env->fregs[i].d = floatx80_default_nan;
     }
-    env->fp0h = floatx80_default_nan_high;
-    env->fp0l = 0xffffffffffffffffULL;
-    env->fp1h = floatx80_default_nan_high;
-    env->fp1l = 0xffffffffffffffffULL;
+    env->fp0h = floatx80_default_nan.high;
+    env->fp0l = floatx80_default_nan.low;
+    env->fp1h = floatx80_default_nan.high;
+    env->fp1l = floatx80_default_nan.low;
 
     env->cc_op = CC_OP_FLAGS;
     /* TODO: We should set PC from the interrupt vector.  */
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 70eba1a..b749a76 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -25,7 +25,6 @@
 
 #include "config.h"
 #include "cpu.h"
-#include "exec.h"
 #include "disas.h"
 #include "tcg-op.h"
 #include "qemu-log.h"
-- 
1.7.2.3