GNU C Library master sources branch master updated. glibc-2.18-119-g24d22e6

[jsm28 at sourceware dot org]

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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=24d22e65b39765bb9060f5a99974696171be1da9

commit 24d22e65b39765bb9060f5a99974696171be1da9
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Sep 18 14:47:49 2013 +0000

    e500 port: fpu_control.h.

diff --git a/ChangeLog b/ChangeLog
index 2a8feff..19fcc3c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,27 @@
 2013-09-18  Joseph Myers  <joseph@codesourcery.com>
+	    Aldy Hernandez  <aldyh@redhat.com>
+
+	* sysdeps/powerpc/fpu_control.h [_SOFT_FLOAT || __NO_FPRS__]:
+	Change condition to [_SOFT_FLOAT].
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_RC_NEAREST): New macro.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_RC_DOWN): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_RC_UP): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_RC_ZERO): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_MASK_ZM): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_MASK_OM): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_MASK_UM): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_MASK_XM): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_MASK_IM): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_RESERVED): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_DEFAULT): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_IEEE): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (fpu_control_t): New typedef.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_GETCW): New macro.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (_FPU_SETCW): Likewise.
+	[__NO_FPRS__ && !_SOFT_FLOAT] (__fpu_control): New variable
+	declaration.
+
+2013-09-18  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/powerpc/powerpc32/__longjmp-common.S (LOAD_GP): Define
 	macro conditional on [__SPE__ || (__NO_FPRS__ && !_SOFT_FLOAT)].
diff --git a/sysdeps/powerpc/fpu_control.h b/sysdeps/powerpc/fpu_control.h
index 1a6d395..c61a2e1 100644
--- a/sysdeps/powerpc/fpu_control.h
+++ b/sysdeps/powerpc/fpu_control.h
@@ -19,7 +19,7 @@
 #ifndef _FPU_CONTROL_H
 #define _FPU_CONTROL_H
 
-#if defined _SOFT_FLOAT || defined __NO_FPRS__
+#ifdef _SOFT_FLOAT
 
 # define _FPU_RESERVED 0xffffffff
 # define _FPU_DEFAULT  0x00000000 /* Default value.  */
@@ -28,6 +28,43 @@ typedef unsigned int fpu_control_t;
 # define _FPU_SETCW(cw) (void) (cw)
 extern fpu_control_t __fpu_control;
 
+#elif defined __NO_FPRS__ /* e500 */
+
+/* rounding control */
+# define _FPU_RC_NEAREST 0x00   /* RECOMMENDED */
+# define _FPU_RC_DOWN    0x03
+# define _FPU_RC_UP      0x02
+# define _FPU_RC_ZERO    0x01
+
+/* masking of interrupts */
+# define _FPU_MASK_ZM  0x10 /* zero divide */
+# define _FPU_MASK_OM  0x40 /* overflow */
+# define _FPU_MASK_UM  0x80 /* underflow */
+# define _FPU_MASK_XM  0x40 /* inexact */
+# define _FPU_MASK_IM  0x20 /* invalid operation */
+
+# define _FPU_RESERVED 0xff3fff7f /* These bits are reserved and not changed. */
+
+/* The fdlibm code requires no interrupts for exceptions.  */
+# define _FPU_DEFAULT  0x00000000 /* Default value.  */
+
+/* IEEE:  same as above, but (some) exceptions;
+   we leave the 'inexact' exception off.
+ */
+# define _FPU_IEEE     0x000003c0
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t;
+
+/* Macros for accessing the hardware control word.  */
+# define _FPU_GETCW(cw) \
+  __asm__ volatile ("mfspefscr %0" : "=r" (cw))
+# define _FPU_SETCW(cw) \
+  __asm__ volatile ("mtspefscr %0" : : "r" (cw))
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
 #else /* PowerPC 6xx floating-point.  */
 
 /* rounding control */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                     |   23 +++++++++++++++++++++++
 sysdeps/powerpc/fpu_control.h |   39 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 61 insertions(+), 1 deletions(-)


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