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authorH.J. Lu <hjl.tools@gmail.com>2015-10-09 11:33:30 -0700
committerH.J. Lu <hjl.tools@gmail.com>2015-10-09 11:42:10 -0700
commit4b71ce6c1a50c14c758f1dd7a2943f2ab9760e85 (patch)
treef5b4c1583cd758301d678976a78071f829f5b6a9 /sysdeps/x86_64/x32
parent0fcc93bce950c8d0c440eee3f968fbeec22db784 (diff)
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Update lrint/lrintf/lrintl for x32
The x86_64 versions of lrint/lrintf/ lrintl are aliases for the long
long versions which isn't correct for x32, where exceptions must respect
overflow for 32-bit long.  Separate versions of the long functions for
x32 that convert to 32-bit long and raise the right exceptions for that
conversion, while keeping the aliases in the non-x32 case.

Tested on x86_64 and x32.  There are no code changes in libm.so on
x86_64.

	* sysdeps/x86_64/fpu/s_llrint.S (__lrint): Add alias only if
	__ILP32__ isn't defined.
	(lrint): Likewise.
	* sysdeps/x86_64/fpu/s_llrintf.S (__lrintf): Likewise.
	(lrintf): Likewise.
	* sysdeps/x86_64/fpu/s_llrintl.S (__lrintl): Likewise.
	(lrintl): Likewise.
	* sysdeps/x86_64/x32/fpu/s_lrint.S: New file.
	* sysdeps/x86_64/x32/fpu/s_lrintf.S: Likewise.
	* sysdeps/x86_64/x32/fpu/s_lrintl.S: Likewise.
Diffstat (limited to 'sysdeps/x86_64/x32')
-rw-r--r--sysdeps/x86_64/x32/fpu/s_lrint.S27
-rw-r--r--sysdeps/x86_64/x32/fpu/s_lrintf.S27
-rw-r--r--sysdeps/x86_64/x32/fpu/s_lrintl.S30
3 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/x86_64/x32/fpu/s_lrint.S b/sysdeps/x86_64/x32/fpu/s_lrint.S
new file mode 100644
index 0000000000..4d183d13cb
--- /dev/null
+++ b/sysdeps/x86_64/x32/fpu/s_lrint.S
@@ -0,0 +1,27 @@
+/* Round argument to nearest integral value according to current rounding
+   direction.
+   Copyright (C) 2015 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>
+
+	.text
+ENTRY(__lrint)
+	cvtsd2si %xmm0,%eax
+	ret
+END(__lrint)
+weak_alias (__lrint, lrint)
diff --git a/sysdeps/x86_64/x32/fpu/s_lrintf.S b/sysdeps/x86_64/x32/fpu/s_lrintf.S
new file mode 100644
index 0000000000..4b3a54e4ff
--- /dev/null
+++ b/sysdeps/x86_64/x32/fpu/s_lrintf.S
@@ -0,0 +1,27 @@
+/* Round argument to nearest integral value according to current rounding
+   direction.
+   Copyright (C) 2015 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>
+
+	.text
+ENTRY(__lrintf)
+	cvtss2si %xmm0,%eax
+	ret
+END(__lrintf)
+weak_alias (__lrintf, lrintf)
diff --git a/sysdeps/x86_64/x32/fpu/s_lrintl.S b/sysdeps/x86_64/x32/fpu/s_lrintl.S
new file mode 100644
index 0000000000..b10bf34015
--- /dev/null
+++ b/sysdeps/x86_64/x32/fpu/s_lrintl.S
@@ -0,0 +1,30 @@
+/* Round argument to nearest integral value according to current rounding
+   direction.
+   Copyright (C) 1997-2015 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>
+
+	.text
+ENTRY(__lrintl)
+	fldt	8(%rsp)
+	fistpl	-4(%rsp)
+	fwait
+	movl	-4(%rsp),%eax
+	ret
+END(__lrintl)
+weak_alias (__lrintl, lrintl)