aboutsummaryrefslogtreecommitdiff
path: root/ports
diff options
context:
space:
mode:
authorMaciej W. Rozycki <macro@codesourcery.com>2013-05-16 23:33:55 +0100
committerMaciej W. Rozycki <macro@codesourcery.com>2013-05-16 23:33:55 +0100
commit2848b105856e49d98f3c5026b6d8d790f9723c0c (patch)
tree66e6cc9d3c1c6d95324e50ceb1140d0eed52ec37 /ports
parentc58b274f01658400ba75886b04cb044ba9467a94 (diff)
downloadglibc-2848b105856e49d98f3c5026b6d8d790f9723c0c.zip
glibc-2848b105856e49d98f3c5026b6d8d790f9723c0c.tar.gz
glibc-2848b105856e49d98f3c5026b6d8d790f9723c0c.tar.bz2
MIPS: soft-fp NaN representation corrections
[BZ #15442] This adds support for the inverse interpretation of the quiet bit of IEEE 754 floating-point NaN data that some processors use. This includes in particular MIPS architecture processors; the payload used for the canonical qNaN encoding is updated accordingly so as not to interfere with the quiet bit.
Diffstat (limited to 'ports')
-rw-r--r--ports/ChangeLog.aarch646
-rw-r--r--ports/ChangeLog.alpha6
-rw-r--r--ports/ChangeLog.mips14
-rw-r--r--ports/ChangeLog.powerpc6
-rw-r--r--ports/sysdeps/aarch64/soft-fp/sfp-machine.h2
-rw-r--r--ports/sysdeps/alpha/soft-fp/sfp-machine.h1
-rw-r--r--ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h8
-rw-r--r--ports/sysdeps/mips/soft-fp/sfp-machine.h8
-rw-r--r--ports/sysdeps/powerpc/soft-fp/sfp-machine.h1
9 files changed, 46 insertions, 6 deletions
diff --git a/ports/ChangeLog.aarch64 b/ports/ChangeLog.aarch64
index a611ac2..a4fc296 100644
--- a/ports/ChangeLog.aarch64
+++ b/ports/ChangeLog.aarch64
@@ -1,3 +1,9 @@
+2013-05-16 Maciej W. Rozycki <macro@codesourcery.com>
+
+ [BZ #15442]
+ * sysdeps/aarch64/soft-fp/sfp-machine.h (_FP_QNANNEGATEDP): New
+ macro.
+
2013-05-12 Marcus Shawcroft <marcus.shawcroft@linaro.org>
* sysdeps/unix/sysv/linux/aarch64/clone.S (__clone):
diff --git a/ports/ChangeLog.alpha b/ports/ChangeLog.alpha
index 9a77d27..3c16ce0 100644
--- a/ports/ChangeLog.alpha
+++ b/ports/ChangeLog.alpha
@@ -1,3 +1,9 @@
+2013-05-16 Maciej W. Rozycki <macro@codesourcery.com>
+
+ [BZ #15442]
+ * sysdeps/alpha/soft-fp/sfp-machine.h (_FP_QNANNEGATEDP): New
+ macro.
+
2013-03-06 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/alpha/bits/mman.h (MAP_HUGE_MASK)
diff --git a/ports/ChangeLog.mips b/ports/ChangeLog.mips
index 472ae21..8640a12 100644
--- a/ports/ChangeLog.mips
+++ b/ports/ChangeLog.mips
@@ -1,3 +1,17 @@
+2013-05-16 Maciej W. Rozycki <macro@codesourcery.com>
+
+ [BZ #15442]
+ * sysdeps/mips/mips64/soft-fp/sfp-machine.h (_FP_QNANNEGATEDP):
+ New macro.
+ (_FP_NANFRAC_S): Don't set the quiet bit.
+ (_FP_NANFRAC_D): Likewise.
+ (_FP_NANFRAC_Q): Likewise.
+ * sysdeps/mips/soft-fp/sfp-machine.h (_FP_QNANNEGATEDP): New
+ macro.
+ (_FP_NANFRAC_S): Don't set the quiet bit.
+ (_FP_NANFRAC_D): Likewise.
+ (_FP_NANFRAC_Q): Likewise.
+
2013-05-16 Ryan S. Arnold <rsa@linux.vnet.ibm.com>
* sysdeps/unix/sysv/linux/mips/kernel_rt_sigframe.h: Add missing
diff --git a/ports/ChangeLog.powerpc b/ports/ChangeLog.powerpc
index 2ba8e37..073df4f 100644
--- a/ports/ChangeLog.powerpc
+++ b/ports/ChangeLog.powerpc
@@ -1,3 +1,9 @@
+2013-05-16 Maciej W. Rozycki <macro@codesourcery.com>
+
+ [BZ #15442]
+ * sysdeps/powerpc/soft-fp/sfp-machine.h (_FP_QNANNEGATEDP): New
+ macro.
+
2013-02-28 Joseph Myers <joseph@codesourcery.com>
[BZ #13550]
diff --git a/ports/sysdeps/aarch64/soft-fp/sfp-machine.h b/ports/sysdeps/aarch64/soft-fp/sfp-machine.h
index b355986..d21d00a 100644
--- a/ports/sysdeps/aarch64/soft-fp/sfp-machine.h
+++ b/ports/sysdeps/aarch64/soft-fp/sfp-machine.h
@@ -25,6 +25,8 @@
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 0
+
/* From my experiments it seems X is chosen unless one of the
NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
diff --git a/ports/sysdeps/alpha/soft-fp/sfp-machine.h b/ports/sysdeps/alpha/soft-fp/sfp-machine.h
index 343464c..be266fe 100644
--- a/ports/sysdeps/alpha/soft-fp/sfp-machine.h
+++ b/ports/sysdeps/alpha/soft-fp/sfp-machine.h
@@ -46,6 +46,7 @@
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 0
/* Alpha Architecture Handbook, 4.7.10.4 sez that we should prefer any
type of NaN in Fb, then Fa. */
diff --git a/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h b/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h
index c81067d..1bdde5a 100644
--- a/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h
+++ b/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h
@@ -17,14 +17,16 @@
#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
-#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
-#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1)
-#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1
+#define _FP_NANFRAC_S (_FP_QNANBIT_S - 1)
+#define _FP_NANFRAC_D (_FP_QNANBIT_D - 1)
+#define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 1
+
/* From my experiments it seems X is chosen unless one of the
NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
diff --git a/ports/sysdeps/mips/soft-fp/sfp-machine.h b/ports/sysdeps/mips/soft-fp/sfp-machine.h
index 3b2a40f..8ccfaa6 100644
--- a/ports/sysdeps/mips/soft-fp/sfp-machine.h
+++ b/ports/sysdeps/mips/soft-fp/sfp-machine.h
@@ -14,14 +14,16 @@
#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
-#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
-#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
-#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
+#define _FP_NANFRAC_S (_FP_QNANBIT_S - 1)
+#define _FP_NANFRAC_D (_FP_QNANBIT_D - 1), -1
+#define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1, -1, -1
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 1
+
/* From my experiments it seems X is chosen unless one of the
NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
diff --git a/ports/sysdeps/powerpc/soft-fp/sfp-machine.h b/ports/sysdeps/powerpc/soft-fp/sfp-machine.h
index 8a9afad..c2a190e 100644
--- a/ports/sysdeps/powerpc/soft-fp/sfp-machine.h
+++ b/ports/sysdeps/powerpc/soft-fp/sfp-machine.h
@@ -22,6 +22,7 @@
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 0
/* Someone please check this. */
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \