Update.cvs/libc-ud-970627

1997-06-27 20:09  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/sys/quota.h: Add <asm/types.h>.
	Reported by a sun <asun@zoology.washington.edu>.

	* libc.map: Add _rpc_dtablesize.  Reported by Thorsten Kukuk.

	* db/makedb.c: Exit with error if number of option is incorrect.

	* math/Makefile (tests): Add test-fenv.
	* math/test-fenv.c: New file.  Test for exception handling functions.
	Written mainly by Andreas Jaeger.

	* sysdeps/i386/fpu/fraiseexcpt.c: Correct implementation.

	* sysdeps/mach/hurd/abi-tag.h: Set tag to 1 for Hurd and kernel
	compatibility version to 0.  Reported by Roland McGrath.

1997-06-27 18:49  Philip Blundell  <Philip.Blundell@pobox.com>

	* sysdeps/standalone/brk.c (__NONE_set_memvals): Correct typo.
	* sysdeps/standalone/arm/bits/errno.h: Add ENOTDIR.
	* sysdeps/stub/sys/param.h: Add definition of MAX and MIN.

1997-06-27 10:44  Fila Kolodny  <fila@ibi.com>

	* sysdeps/mach/hurd/dl-sysdep.c: Make _dl_sysdep_read_whole_file weak.

1997-06-27 00:51  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/dl-open.c (_dl_open): Check versions of all newly loaded
	objects, including dependencies.

	* elf/dl-runtime.c (fixup): Always use version information if
	available.

1997-06-26 12:25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/bits/nan.h: Renamed from sysdeps/m68k/nan.h.

1997-06-26 11:40  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* posix/regex.c (DEBUG_POP): Assume parameter to be pointer to
	int, not pointer to fail_stack_elt_t.
	(PUSH_FAILURE_POINT): Fix all formats in debugging messages.  Fix
	type of this_reg.
	(POP_FAILURE_POINT): Likewise.  Fix type of failure_id.
	(re_match_2_internal): Pass NULL, not 0, to PUSH_FAILURE_POINT.

1997-06-27 02:17  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/syscalls.list: Add quotactl.
	Reported by a sun.

	* manual/lgpl.texinfo: Update copyright.

1 files changed, 37 insertions, 14 deletions

diff --git a/sysdeps/i386/fpu/fraiseexcpt.c b/sysdeps/i386/fpu/fraiseexcpt.c
index 90e992aaec..c6cd6d6672 100644
--- a/sysdeps/i386/fpu/fraiseexcpt.c
+++ b/sysdeps/i386/fpu/fraiseexcpt.c
@@ -32,44 +32,67 @@ feraiseexcept (int excepts)
   /* First: invalid exception.  */
   if ((FE_INVALID & excepts) != 0)
     {
-      /* One example of a invalid operation is 0 * Infinity.  */
-      double d = 0.0 * HUGE_VAL;
+      /* One example of a invalid operation is 0.0 / 0.0.  */
+      double d;
+      __asm__ ("fldz; fdiv %%st, %%st(0); fwait" : "=t" (d));
       (void) &d;
-      /* Now force the exception.  */
-      __asm__ ("fwait");
     }
 
   /* Next: division by zero.  */
   if ((FE_DIVBYZERO & excepts) != 0)
     {
       double d;
-      __asm__ ("fld1; fldz; fdivp %%st, %%st(1); fwait" : "=t" (d));
+      __asm__ ("fldz; fld1; fdivp %%st, %%st(1); fwait" : "=t" (d));
       (void) &d;
     }
 
   /* Next: overflow.  */
   if ((FE_OVERFLOW & excepts) != 0)
     {
-      long double d = LDBL_MAX * LDBL_MAX;
-      (void) &d;
-      /* Now force the exception.  */
-      __asm__ ("fwait");
+      /* There is no way to raise only the overflow flag.  Do it the
+	 hard way.  */
+      fenv_t temp;
+
+      /* Bah, we have to clear selected exceptions.  Since there is no
+	 `fldsw' instruction we have to do it the hard way.  */
+      __asm__ ("fnstenv %0" : "=m" (*&temp));
+
+      /* Set the relevant bits.  */
+      temp.status_word |= FE_OVERFLOW;
+
+      /* Put the new data in effect.  */
+      __asm__ ("fldenv %0" : : "m" (*&temp));
+
+      /* And raise the exception.  */
+	__asm__ ("fwait");
     }
 
   /* Next: underflow.  */
   if ((FE_UNDERFLOW & excepts) != 0)
     {
-      long double d = LDBL_MIN / 16.0;
-      (void) &d;
-      /* Now force the exception.  */
-      __asm__ ("fwait");
+      /* There is no way to raise only the overflow flag.  Do it the
+	 hard way.  */
+      fenv_t temp;
+
+      /* Bah, we have to clear selected exceptions.  Since there is no
+	 `fldsw' instruction we have to do it the hard way.  */
+      __asm__ ("fnstenv %0" : "=m" (*&temp));
+
+      /* Set the relevant bits.  */
+      temp.status_word |= FE_UNDERFLOW;
+
+      /* Put the new data in effect.  */
+      __asm__ ("fldenv %0" : : "m" (*&temp));
+
+      /* And raise the exception.  */
+	__asm__ ("fwait");
     }
 
   /* Last: inexact.  */
   if ((FE_INEXACT & excepts) != 0)
     {
       long double d;
-      __asm__ ("fld1; fldpi; fdivp %%st, %%st(1); fwait" : "=t" (d));
+      __asm__ ("fmul %%st, %%st(0); fwait" : "=t" (d) : "0" (LDBL_MAX));
       (void) &d;
     }
 }