sfp-machine.c (FP_HANDLE_EXCEPTIONS): Handle FP_EX_DENORM.

	* config/i386/32/sfp-machine.c (FP_HANDLE_EXCEPTIONS): Handle
	FP_EX_DENORM.
	* config/i386/64/sfp-machine.c (FP_HANDLE_EXCEPTIONS): Ditto.

From-SVN: r204549

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index c25c281be07ef49dc21add16e015f05c979c1a79..dc4fa739d6073f059139d55d1664563e91854095 100644 (file)
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,9 @@
+2013-11-07  Uros Bizjak  <ubizjak@gmail.com>
+
+       * config/i386/32/sfp-machine.c (FP_HANDLE_EXCEPTIONS): Handle
+       FP_EX_DENORM.
+       * config/i386/64/sfp-machine.c (FP_HANDLE_EXCEPTIONS): Ditto.
+
 2013-08-01  Maxim Kuvyrkov  <maxim@kugelworks.com>
 
        Backport from trunk: Fix licenses on several libgcc files.
@@ -10,7 +16,7 @@
 
        Backport from mainline:
        2013-06-08  Walter Lee  <walt@tilera.com>
-       
+
        * config/tilepro/atomic.h: Don't include stdint.h or features.h.
        Replace int64_t with long long.  Add __extension__ where
        appropriate.
@@ -50,7 +56,8 @@
 
        PR target/49880
        * config/sh/lib1funcs.S (sdivsi3_i4, udivsi3_i4): Enable for SH2A.
-       (sdivsi3, udivsi3): Remove SH4 check and always compile these functions.
+       (sdivsi3, udivsi3): Remove SH4 check and always compile these
+       functions.
 
 2013-03-06  Oleg Endo  <olegendo@gcc.gnu.org>
 

diff --git a/libgcc/config/i386/32/sfp-machine.h b/libgcc/config/i386/32/sfp-machine.h
index 131b2c453f25ce1904e06a13056da821ab63f5f9..7e7952908de1a193c9f42815e8c086a894fb35d0 100644 (file)
--- a/libgcc/config/i386/32/sfp-machine.h
+++ b/libgcc/config/i386/32/sfp-machine.h
@@ -140,6 +140,14 @@ struct fenv
        __asm__ __volatile__ ("fdiv {%y0, %0|%0, %y0}" : "+t" (f));     \
        __asm__ __volatile__ ("fwait");                                 \
       }                                                                        \
+    if (_fex & FP_EX_DENORM)                                           \
+      {                                                                        \
+       struct fenv temp;                                               \
+       __asm__ __volatile__ ("fnstenv %0" : "=m" (temp));              \
+       temp.__status_word |= FP_EX_DENORM;                             \
+       __asm__ __volatile__ ("fldenv %0" : : "m" (temp));              \
+       __asm__ __volatile__ ("fwait");                                 \
+      }                                                                        \
     if (_fex & FP_EX_DIVZERO)                                          \
       {                                                                        \
        float f = 1.0, g = 0.0;                                         \

diff --git a/libgcc/config/i386/64/sfp-machine.h b/libgcc/config/i386/64/sfp-machine.h
index f90305a7642ab327a378e9737687d0f26b0fe97e..57cc873ca9eccdc84bc5dfb7a293fa4a7e6e8114 100644 (file)
--- a/libgcc/config/i386/64/sfp-machine.h
+++ b/libgcc/config/i386/64/sfp-machine.h
@@ -89,6 +89,14 @@ struct fenv
        float f = 0.0;                                                  \
        __asm__ __volatile__ (ASM_INVALID : : "x" (f));                 \
       }                                                                        \
+    if (_fex & FP_EX_DENORM)                                           \
+      {                                                                        \
+       struct fenv temp;                                               \
+       __asm__ __volatile__ ("fnstenv %0" : "=m" (temp));              \
+       temp.__status_word |= FP_EX_DENORM;                             \
+       __asm__ __volatile__ ("fldenv %0" : : "m" (temp));              \
+       __asm__ __volatile__ ("fwait");                                 \
+      }                                                                        \
     if (_fex & FP_EX_DIVZERO)                                          \
       {                                                                        \
        float f = 1.0, g = 0.0;                                         \