winsup/cygwin/ChangeLog:

	* Makefile.in (DLL_OFILES): Add new fenv.o module.
	(fenv_CFLAGS): New flags definition for fenv.o compile.
	* autoload.cc (std_dll_init): Use fenv.h functions instead of direct
	manipulation of x87 FPU registers.
	* crt0.c (mainCRTStartup): Likewise.
	* cygwin.din (feclearexcept, fegetexceptflag, feraiseexcept,
	fesetexceptflag, fetestexcept, fegetround, fesetround, fegetenv,
	feholdexcept, fesetenv, feupdateenv, fegetprec, fesetprec,
	feenableexcept, fedisableexcept, fegetexcept, _feinitialise,
	_fe_dfl_env, _fe_nomask_env): Export new functions and data items.
	* fenv.cc: New file.
	* posix.sgml: Update status of newly-implemented APIs.
	* include/fenv.h: Likewise related header.
	* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.

1 files changed, 2 insertions, 18 deletions

diff --git a/winsup/cygwin/crt0.c b/winsup/cygwin/crt0.c
index d716d9be5..aa6a5f18f 100644
--- a/winsup/cygwin/crt0.c
+++ b/winsup/cygwin/crt0.c
@@ -13,11 +13,7 @@ details. */
 
 #include "winlean.h"
 #include <sys/cygwin.h>
-#ifdef __i386__
-#define FPU_RESERVED 0xF0C0
-#define FPU_DEFAULT  0x033f
-
-#endif
+#include "fenv.h"
 
 extern int main (int argc, char **argv);
 
@@ -29,19 +25,7 @@ mainCRTStartup ()
 #ifdef __i386__
   (void)__builtin_return_address(1);
   asm volatile ("andl $-16,%%esp" ::: "%esp");
-  {
-    volatile unsigned short cw;
-
-    /* Get Control Word */
-    __asm__ volatile ("fnstcw %0" : "=m" (cw) : );
-
-    /* mask in */
-    cw &= FPU_RESERVED;
-    cw |= FPU_DEFAULT;
-
-    /* set cw */
-    __asm__ volatile ("fldcw %0" :: "m" (cw));
-  }
+  _feinitialise ();
 #endif
 
   cygwin_crt0 (main);