alpha: Purge __ASSUME_IEEE_RAISE_EXCEPTION

ports/ChangeLog.alpha

@@ -1,5 +1,10 @@
 2012-08-08  Richard Henderson  <rth@redhat.com>
 
+	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
+	(__ASSUME_IEEE_RAISE_EXCEPTION): Remove.
+	* sysdeps/unix/sysv/linux/alpha/fraiseexcpt.S: New file.
+	* sysdeps/unix/sysv/linux/alpha/fraiseexcpt.c: Remove.
+
 	* sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S: Use dwarf2
 	cfi markup for unwind.  Adjust stack early so that the normal
 	syscall error path can be used.

ports/sysdeps/unix/sysv/linux/alpha/fraiseexcpt.S

@@ -0,0 +1,56 @@
+/* Copyright (C) 2004-2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include "kernel_sysinfo.h"
+
+
+	.text
+
+ENTRY(__feraiseexcept)
+	cfi_startproc
+	PSEUDO_PROLOGUE
+
+	lda	sp, -16(sp)
+	cfi_adjust_cfa_offset(16)
+
+	ldi	v0, __NR_osf_setsysinfo
+	stq	a0, 0(sp)
+	mov	sp, a1
+	ldi	a0, SSI_IEEE_RAISE_EXCEPTION
+	call_pal PAL_callsys
+
+	lda	sp, 16(sp)
+	cfi_adjust_cfa_offset(-16)
+
+	/* Here in libm we can't use SYSCALL_ERROR_LABEL.  Nor is it clear
+	   that we'd want to set errno anyway.  All we're required to do is
+	   return non-zero on error.  Which is exactly A3.  */
+	mov	a3, v0
+	ret
+
+END(__feraiseexcept)
+	cfi_endproc
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__feraiseexcept, __old_feraiseexcept)
+compat_symbol (libm, __old_feraiseexcept, feraiseexcept, GLIBC_2_1);
+#endif
+
+libm_hidden_ver (__feraiseexcept, feraiseexcept)
+versioned_symbol (libm, __feraiseexcept, feraiseexcept, GLIBC_2_2);

ports/sysdeps/unix/sysv/linux/alpha/kernel-features.h

@@ -25,9 +25,6 @@
 
 #define __ASSUME_UTIMES	1
 
-/* Starting with version 2.6.9, SSI_IEEE_RAISE_EXCEPTION exists.  */
-#define __ASSUME_IEEE_RAISE_EXCEPTION	1
-
 /* Support for the O_CLOEXEC flag was added for alpha in 2.6.23.  */
 #if __LINUX_KERNEL_VERSION >= 0x020617
 # define __ASSUME_O_CLOEXEC    1