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[Commits] r19165 - in /fsf/trunk/libc: ChangeLog sysdeps/i386/fpu_control.h sysdeps/x86/fpu_control.h sysdeps/x86_64/fpu_control.h
- To: commits@xxxxxxxxxx
- Subject: [Commits] r19165 - in /fsf/trunk/libc: ChangeLog sysdeps/i386/fpu_control.h sysdeps/x86/fpu_control.h sysdeps/x86_64/fpu_control.h
- From: eglibc@xxxxxxxxxx
- Date: Tue, 19 Jun 2012 00:02:07 -0000
Author: eglibc
Date: Tue Jun 19 00:02:06 2012
New Revision: 19165
Log:
Import glibc-mainline for 2012-06-19
Added:
fsf/trunk/libc/sysdeps/x86/fpu_control.h
Removed:
fsf/trunk/libc/sysdeps/i386/fpu_control.h
fsf/trunk/libc/sysdeps/x86_64/fpu_control.h
Modified:
fsf/trunk/libc/ChangeLog
Modified: fsf/trunk/libc/ChangeLog
==============================================================================
--- fsf/trunk/libc/ChangeLog (original)
+++ fsf/trunk/libc/ChangeLog Tue Jun 19 00:02:06 2012
@@ -1,3 +1,13 @@
+2012-06-18 H.J. Lu <hongjiu.lu@xxxxxxxxx>
+
+ [BZ #14117]
+ * sysdeps/i386/fpu_control.h: Removed.
+ * sysdeps/x86_64/fpu_control.h: Moved to ...
+ * sysdeps/x86/fpu_control.h: Here.
+
+ * sysdeps/x86_64/fpu_control.h (_FPU_GETCW): Add __volatile__.
+ (_FPU_SETCW): Likewise.
+
2012-06-15 H.J. Lu <hongjiu.lu@xxxxxxxxx>
[BZ #14117]
Removed: fsf/trunk/libc/sysdeps/i386/fpu_control.h
==============================================================================
--- fsf/trunk/libc/sysdeps/i386/fpu_control.h (original)
+++ fsf/trunk/libc/sysdeps/i386/fpu_control.h (removed)
@@ -1,101 +1,0 @@
-/* FPU control word bits. i387 version.
- Copyright (C) 1993,1995-1998,2000,2001,2003 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Olaf Flebbe.
-
- 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/>. */
-
-#ifndef _FPU_CONTROL_H
-#define _FPU_CONTROL_H 1
-
-/* Here is the dirty part. Set up your 387 through the control word
- * (cw) register.
- *
- * 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0
- * | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM
- *
- * IM: Invalid operation mask
- * DM: Denormalized operand mask
- * ZM: Zero-divide mask
- * OM: Overflow mask
- * UM: Underflow mask
- * PM: Precision (inexact result) mask
- *
- * Mask bit is 1 means no interrupt.
- *
- * PC: Precision control
- * 11 - round to extended precision
- * 10 - round to double precision
- * 00 - round to single precision
- *
- * RC: Rounding control
- * 00 - rounding to nearest
- * 01 - rounding down (toward - infinity)
- * 10 - rounding up (toward + infinity)
- * 11 - rounding toward zero
- *
- * IC: Infinity control
- * That is for 8087 and 80287 only.
- *
- * The hardware default is 0x037f which we use.
- */
-
-#include <features.h>
-
-/* masking of interrupts */
-#define _FPU_MASK_IM 0x01
-#define _FPU_MASK_DM 0x02
-#define _FPU_MASK_ZM 0x04
-#define _FPU_MASK_OM 0x08
-#define _FPU_MASK_UM 0x10
-#define _FPU_MASK_PM 0x20
-
-/* precision control */
-#define _FPU_EXTENDED 0x300 /* libm requires double extended precision. */
-#define _FPU_DOUBLE 0x200
-#define _FPU_SINGLE 0x0
-
-/* rounding control */
-#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
-#define _FPU_RC_DOWN 0x400
-#define _FPU_RC_UP 0x800
-#define _FPU_RC_ZERO 0xC00
-
-#define _FPU_RESERVED 0xF0C0 /* Reserved bits in cw */
-
-
-/* The fdlibm code requires strict IEEE double precision arithmetic,
- and no interrupts for exceptions, rounding to nearest. */
-
-#define _FPU_DEFAULT 0x037f
-
-/* IEEE: same as above. */
-#define _FPU_IEEE 0x037f
-
-/* Type of the control word. */
-typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
-
-/* Macros for accessing the hardware control word.
-
- Note that the use of these macros is no sufficient anymore with
- recent hardware. Some floating point operations are executed in
- the SSE/SSE2 engines which have their own control and status register. */
-#define _FPU_GETCW(cw) __asm__ __volatile__ ("fnstcw %0" : "=m" (*&cw))
-#define _FPU_SETCW(cw) __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw))
-
-/* Default control word set at startup. */
-extern fpu_control_t __fpu_control;
-
-#endif /* fpu_control.h */
Added: fsf/trunk/libc/sysdeps/x86/fpu_control.h
==============================================================================
--- fsf/trunk/libc/sysdeps/x86/fpu_control.h (added)
+++ fsf/trunk/libc/sysdeps/x86/fpu_control.h Tue Jun 19 00:02:06 2012
@@ -1,0 +1,109 @@
+/* FPU control word bits. x86 version.
+ Copyright (C) 1993-2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Olaf Flebbe.
+
+ 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/>. */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H 1
+
+/* Note that this file sets on x86-64 only the x87 FPU, it does not
+ touch the SSE unit. */
+
+/* Here is the dirty part. Set up your 387 through the control word
+ * (cw) register.
+ *
+ * 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0
+ * | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM
+ *
+ * IM: Invalid operation mask
+ * DM: Denormalized operand mask
+ * ZM: Zero-divide mask
+ * OM: Overflow mask
+ * UM: Underflow mask
+ * PM: Precision (inexact result) mask
+ *
+ * Mask bit is 1 means no interrupt.
+ *
+ * PC: Precision control
+ * 11 - round to extended precision
+ * 10 - round to double precision
+ * 00 - round to single precision
+ *
+ * RC: Rounding control
+ * 00 - rounding to nearest
+ * 01 - rounding down (toward - infinity)
+ * 10 - rounding up (toward + infinity)
+ * 11 - rounding toward zero
+ *
+ * IC: Infinity control
+ * That is for 8087 and 80287 only.
+ *
+ * The hardware default is 0x037f which we use.
+ */
+
+#include <features.h>
+
+/* masking of interrupts */
+#define _FPU_MASK_IM 0x01
+#define _FPU_MASK_DM 0x02
+#define _FPU_MASK_ZM 0x04
+#define _FPU_MASK_OM 0x08
+#define _FPU_MASK_UM 0x10
+#define _FPU_MASK_PM 0x20
+
+/* precision control */
+#define _FPU_EXTENDED 0x300 /* libm requires double extended precision. */
+#define _FPU_DOUBLE 0x200
+#define _FPU_SINGLE 0x0
+
+/* rounding control */
+#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
+#define _FPU_RC_DOWN 0x400
+#define _FPU_RC_UP 0x800
+#define _FPU_RC_ZERO 0xC00
+
+#define _FPU_RESERVED 0xF0C0 /* Reserved bits in cw */
+
+
+/* The fdlibm code requires strict IEEE double precision arithmetic,
+ and no interrupts for exceptions, rounding to nearest. */
+
+#define _FPU_DEFAULT 0x037f
+
+/* IEEE: same as above. */
+#define _FPU_IEEE 0x037f
+
+/* Type of the control word. */
+typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
+
+/* Macros for accessing the hardware control word. "*&" is used to
+ work around a bug in older versions of GCC. __volatile__ is used
+ to support combination of writing the control register and reading
+ it back. Without __volatile__, the old value may be used for reading
+ back under compiler optimization.
+
+ Note that the use of these macros is not sufficient anymore with
+ recent hardware nor on x86-64. Some floating point operations are
+ executed in the SSE/SSE2 engines which have their own control and
+ status register. */
+#define _FPU_GETCW(cw) __asm__ __volatile__ ("fnstcw %0" : "=m" (*&cw))
+#define _FPU_SETCW(cw) __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw))
+
+/* Default control word set at startup. */
+extern fpu_control_t __fpu_control;
+
+#endif /* fpu_control.h */
Removed: fsf/trunk/libc/sysdeps/x86_64/fpu_control.h
==============================================================================
--- fsf/trunk/libc/sysdeps/x86_64/fpu_control.h (original)
+++ fsf/trunk/libc/sysdeps/x86_64/fpu_control.h (removed)
@@ -1,100 +1,0 @@
-/* FPU control word bits. x86-64 version.
- Copyright (C) 1993,1995,1996,1997,1998,2000,2001,2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Olaf Flebbe.
-
- 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/>. */
-
-#ifndef _FPU_CONTROL_H
-#define _FPU_CONTROL_H 1
-
-/* Note that this file sets on x86-64 only the x87 FPU, it does not
- touch the SSE unit. */
-
-/* Here is the dirty part. Set up your 387 through the control word
- * (cw) register.
- *
- * 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0
- * | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM
- *
- * IM: Invalid operation mask
- * DM: Denormalized operand mask
- * ZM: Zero-divide mask
- * OM: Overflow mask
- * UM: Underflow mask
- * PM: Precision (inexact result) mask
- *
- * Mask bit is 1 means no interrupt.
- *
- * PC: Precision control
- * 11 - round to extended precision
- * 10 - round to double precision
- * 00 - round to single precision
- *
- * RC: Rounding control
- * 00 - rounding to nearest
- * 01 - rounding down (toward - infinity)
- * 10 - rounding up (toward + infinity)
- * 11 - rounding toward zero
- *
- * IC: Infinity control
- * That is for 8087 and 80287 only.
- *
- * The hardware default is 0x037f which we use.
- */
-
-#include <features.h>
-
-/* masking of interrupts */
-#define _FPU_MASK_IM 0x01
-#define _FPU_MASK_DM 0x02
-#define _FPU_MASK_ZM 0x04
-#define _FPU_MASK_OM 0x08
-#define _FPU_MASK_UM 0x10
-#define _FPU_MASK_PM 0x20
-
-/* precision control */
-#define _FPU_EXTENDED 0x300 /* libm requires double extended precision. */
-#define _FPU_DOUBLE 0x200
-#define _FPU_SINGLE 0x0
-
-/* rounding control */
-#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
-#define _FPU_RC_DOWN 0x400
-#define _FPU_RC_UP 0x800
-#define _FPU_RC_ZERO 0xC00
-
-#define _FPU_RESERVED 0xF0C0 /* Reserved bits in cw */
-
-
-/* The fdlibm code requires strict IEEE double precision arithmetic,
- and no interrupts for exceptions, rounding to nearest. */
-
-#define _FPU_DEFAULT 0x037f
-
-/* IEEE: same as above. */
-#define _FPU_IEEE 0x037f
-
-/* Type of the control word. */
-typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
-
-/* Macros for accessing the hardware control word. */
-#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
-#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
-
-/* Default control word set at startup. */
-extern fpu_control_t __fpu_control;
-
-#endif /* fpu_control.h */
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