diff options
Diffstat (limited to 'StdLib/LibC/Main/X64')
| -rw-r--r-- | StdLib/LibC/Main/X64/fpu_rmode.S | 20 | ||||
| -rw-r--r-- | StdLib/LibC/Main/X64/fpu_rmode.asm | 41 | ||||
| -rw-r--r-- | StdLib/LibC/Main/X64/isinfl.c | 63 | ||||
| -rw-r--r-- | StdLib/LibC/Main/X64/isnanl.c | 64 |
4 files changed, 188 insertions, 0 deletions
diff --git a/StdLib/LibC/Main/X64/fpu_rmode.S b/StdLib/LibC/Main/X64/fpu_rmode.S new file mode 100644 index 0000000000..4999102582 --- /dev/null +++ b/StdLib/LibC/Main/X64/fpu_rmode.S @@ -0,0 +1,20 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php.
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(internal_FPU_rmode)
+ASM_PFX(internal_FPU_rmode):
+ fnstcw -4(%rsp)
+ movl -4(%rsp),%eax
+ shrl $10,%eax
+ andl $3,%eax
+ ret
diff --git a/StdLib/LibC/Main/X64/fpu_rmode.asm b/StdLib/LibC/Main/X64/fpu_rmode.asm new file mode 100644 index 0000000000..36b0d11ccd --- /dev/null +++ b/StdLib/LibC/Main/X64/fpu_rmode.asm @@ -0,0 +1,41 @@ +;------------------------------------------------------------------------------
+; Return the current FPU rounding mode.
+;
+; MASM implementation of the flt_rounds function from NetBSD.
+;
+; Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+ .code
+
+;_map BYTE 1 ; round to nearest
+; BYTE 3 ; round to negative infinity
+; BYTE 2 ; round to positive infinity
+; BYTE 0 ; round to zero
+
+;------------------------------------------------------------------------------
+; int
+; EFIAPI
+; fpu_rmode( void );
+;
+; VC++ always creates space for 4 parameters on the stack, whether they are
+; used or not. We use one for temporary storage since the only variant of
+; fnstcw saves to memory, NOT a register.
+;------------------------------------------------------------------------------
+internal_FPU_rmode PROC
+ fnstcw [rsp + 8] ; save 16-bit FPU Control Word
+ mov eax, [rsp + 8] ; get the saved FPU Control Word
+ shr eax, 10
+ and rax, 3 ; index is only the LSB two bits in RAX
+ ret ; Return rounding mode in RAX
+internal_FPU_rmode ENDP
+
+ END
diff --git a/StdLib/LibC/Main/X64/isinfl.c b/StdLib/LibC/Main/X64/isinfl.c new file mode 100644 index 0000000000..d50577ffd1 --- /dev/null +++ b/StdLib/LibC/Main/X64/isinfl.c @@ -0,0 +1,63 @@ +/* $NetBSD: isinfl.c,v 1.5.16.1 2007/05/07 19:49:08 pavel Exp $ */
+
+/*
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: Header: isinf.c,v 1.1 91/07/08 19:03:34 torek Exp
+ */
+
+#include <sys/EfiCdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)isinf.c 8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: isinfl.c,v 1.5.16.1 2007/05/07 19:49:08 pavel Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include <machine/ieee.h>
+#include <math.h>
+
+/*
+ * 7.12.3.3 isinf - test for infinity
+ * IEEE 754 compatible 80-bit extended-precision Intel 386 version
+ */
+int
+__isinfl(long double x)
+{
+ union ieee_ext_u u = {0.0};
+
+ u.extu_ld = x;
+
+ return (u.extu_ext.ext_exp == EXT_EXP_INFNAN &&
+ u.extu_ext.ext_frach == 0x80000000 && u.extu_ext.ext_fracl == 0);
+}
diff --git a/StdLib/LibC/Main/X64/isnanl.c b/StdLib/LibC/Main/X64/isnanl.c new file mode 100644 index 0000000000..148d674577 --- /dev/null +++ b/StdLib/LibC/Main/X64/isnanl.c @@ -0,0 +1,64 @@ +/* $NetBSD: isnanl.c,v 1.5.16.1 2007/05/07 19:49:07 pavel Exp $ */
+
+/*
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: Header: isinf.c,v 1.1 91/07/08 19:03:34 torek Exp
+ */
+
+#include <sys/EfiCdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)isinf.c 8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: isnanl.c,v 1.5.16.1 2007/05/07 19:49:07 pavel Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include <machine/ieee.h>
+#include <math.h>
+
+/*
+ * 7.12.3.4 isnan - test for a NaN
+ * IEEE 754 compatible 80-bit extended-precision Intel 386 version
+ */
+int
+__isnanl(long double x)
+{
+ union ieee_ext_u u = { 0 };
+
+ u.extu_ld = x;
+
+ return (u.extu_ext.ext_exp == EXT_EXP_INFNAN &&
+ (u.extu_ext.ext_frach & 0x80000000) != 0 &&
+ (u.extu_ext.ext_frach != 0x80000000 || u.extu_ext.ext_fracl != 0));
+}
|