Imported Upstream version 4.8.1

[platform/upstream/gcc48.git] / libgcc / config / i386 / sfp-machine.h

diff --git a/libgcc/config/i386/sfp-machine.h b/libgcc/config/i386/sfp-machine.h
index eb4b8bf..b19d94b 100644 (file)
--- a/libgcc/config/i386/sfp-machine.h
+++ b/libgcc/config/i386/sfp-machine.h
@@ -3,8 +3,80 @@
 #define _FP_STRUCT_LAYOUT  __attribute__ ((gcc_struct))
 #endif
 
+/* The type of the result of a floating point comparison.  This must
+   match `__libgcc_cmp_return__' in GCC for the target.  */
+typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
+#define CMPtype __gcc_CMPtype
+
 #ifdef __x86_64__
 #include "config/i386/64/sfp-machine.h"
 #else
 #include "config/i386/32/sfp-machine.h"
 #endif
+
+#define _FP_KEEPNANFRACP       1
+
+#define _FP_NANSIGN_S          1
+#define _FP_NANSIGN_D          1
+#define _FP_NANSIGN_E          1
+#define _FP_NANSIGN_Q          1
+
+/* Here is something Intel misdesigned: the specs don't define
+   the case where we have two NaNs with same mantissas, but
+   different sign. Different operations pick up different NaNs.  */
+#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                     \
+  do {                                                         \
+    if (_FP_FRAC_GT_##wc(X, Y)                                 \
+       || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \
+      {                                                                \
+       R##_s = X##_s;                                          \
+       _FP_FRAC_COPY_##wc(R,X);                                \
+      }                                                                \
+    else                                                       \
+      {                                                                \
+       R##_s = Y##_s;                                          \
+       _FP_FRAC_COPY_##wc(R,Y);                                \
+      }                                                                \
+    R##_c = FP_CLS_NAN;                                                \
+  } while (0)
+
+#ifndef _SOFT_FLOAT
+#define FP_EX_INVALID          0x01
+#define FP_EX_DENORM           0x02
+#define FP_EX_DIVZERO          0x04
+#define FP_EX_OVERFLOW         0x08
+#define FP_EX_UNDERFLOW                0x10
+#define FP_EX_INEXACT          0x20
+#define FP_EX_ALL \
+       (FP_EX_INVALID | FP_EX_DENORM | FP_EX_DIVZERO | FP_EX_OVERFLOW \
+        | FP_EX_UNDERFLOW | FP_EX_INEXACT)
+
+void __sfp_handle_exceptions (int);
+
+#define FP_HANDLE_EXCEPTIONS                   \
+  do {                                         \
+    if (__builtin_expect (_fex, 0))            \
+      __sfp_handle_exceptions (_fex);          \
+  } while (0);
+
+#define FP_TRAPPING_EXCEPTIONS ((_fcw >> FP_EX_SHIFT) & FP_EX_ALL)
+
+#define FP_ROUNDMODE           (_fcw & FP_RND_MASK)
+#endif
+
+#define        __LITTLE_ENDIAN 1234
+#define        __BIG_ENDIAN    4321
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
+
+/* Define ALIASNAME as a strong alias for NAME.  */
+#if defined __MACH__
+/* Mach-O doesn't support aliasing.  If these functions ever return
+   anything but CMPtype we need to revisit this... */
+#define strong_alias(name, aliasname) \
+  CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); }
+#else
+# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
+# define _strong_alias(name, aliasname) \
+  extern __typeof (name) aliasname __attribute__ ((alias (#name)));
+#endif