Merge changes between r19381 and r19447 from /fsf/trunk.

git-svn-id: svn://svn.eglibc.org/trunk@19448 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 86 insertions, 0 deletions

diff --git a/libc/ports/sysdeps/alpha/reml.S b/libc/ports/sysdeps/alpha/reml.S
new file mode 100644
index 000000000..e59076096
--- /dev/null
+++ b/libc/ports/sysdeps/alpha/reml.S
@@ -0,0 +1,86 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+   Contributed by Richard Henderson  <rth@twiddle.net>
+   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 "div_libc.h"
+
+/* 32-bit signed int remainder.  This is not a normal C function.  Argument
+   registers are t10 and t11, the result goes in t12.  Only t12 and AT may
+   be clobbered.
+
+   The FPU can handle the division for all input values except zero.
+   All we have to do is compute the remainder via multiply-and-subtract.
+
+   The FPCR save/restore is due to the fact that the EV6 _will_ set FPCR_INE
+   for cvttq/c even without /sui being set.  It will not, however, properly
+   raise the exception, so we don't have to worry about FPCR_INED being clear
+   and so dying by SIGFPE.  */
+
+#ifndef EXTEND
+#define EXTEND(S,D)	sextl S, D
+#endif
+
+	.text
+	.align	4
+	.globl	__reml
+	.type	__reml, @funcnoplt
+	.usepv	__reml, no
+
+	cfi_startproc
+	cfi_return_column (RA)
+__reml:
+	lda	sp, -FRAME(sp)
+	cfi_def_cfa_offset (FRAME)
+	CALL_MCOUNT
+	stt	$f0, 0(sp)
+	excb
+	beq	Y, DIVBYZERO
+
+	stt	$f1, 8(sp)
+	stt	$f2, 16(sp)
+	cfi_rel_offset ($f0, 0)
+	cfi_rel_offset ($f1, 8)
+	cfi_rel_offset ($f2, 16)
+	mf_fpcr	$f2
+
+	EXTEND	(X, RV)
+	EXTEND	(Y, AT)
+	_ITOFT2	RV, $f0, 24, AT, $f1, 32
+	cvtqt	$f0, $f0
+	cvtqt	$f1, $f1
+	divt/c	$f0, $f1, $f0
+	cvttq/c	$f0, $f0
+	excb
+	mt_fpcr	$f2
+	_FTOIT	$f0, RV, 24
+
+	ldt	$f0, 0(sp)
+	mull	RV, Y, RV
+	ldt	$f1, 8(sp)
+	ldt	$f2, 16(sp)
+	lda	sp, FRAME(sp)
+	cfi_restore ($f0)
+	cfi_restore ($f1)
+	cfi_restore ($f2)
+	cfi_def_cfa_offset (0)
+	subl	X, RV, RV
+	ret	$31, (RA), 1
+
+	cfi_endproc
+	.size	__reml, .-__reml
+
+	DO_DIVBYZERO