Remove 17581 from NEWS

[platform/upstream/glibc.git] / NEWS

diff --git a/NEWS b/NEWS
index a2f93a1..f1165ab 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -12,11 +12,11 @@ Version 2.21
   6652, 10672, 12847, 12926, 13862, 14132, 14138, 14171, 14498, 15215,
   15884, 16191, 16469, 16617, 16619, 16657, 16740, 16857, 17192, 17266,
   17273, 17344, 17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501,
-  17506, 17508, 17522, 17555, 17570, 17571, 17572, 17573, 17574, 17581,
-  17582, 17583, 17584, 17585, 17589, 17594, 17601, 17608, 17616, 17625,
-  17630, 17633, 17634, 17635, 17647, 17653, 17657, 17658, 17664, 17665,
-  17668, 17682, 17717, 17719, 17722, 17723, 17724, 17725, 17732, 17733,
-  17744, 17745, 17746, 17747, 17748, 17775, 17777, 17780, 17781, 17782,
+  17506, 17508, 17522, 17555, 17570, 17571, 17572, 17573, 17574, 17582,
+  17583, 17584, 17585, 17589, 17594, 17601, 17608, 17616, 17625, 17630,
+  17633, 17634, 17635, 17647, 17653, 17657, 17658, 17664, 17665, 17668,
+  17682, 17717, 17719, 17722, 17723, 17724, 17725, 17732, 17733, 17744,
+  17745, 17746, 17747, 17748, 17775, 17777, 17780, 17781, 17782, 17791,
   17793, 17796, 17797, 17806
 
 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
@@ -53,6 +53,26 @@ Version 2.21
 
 * Merged gettext 0.19.3 into the intl subdirectory.  This fixes building
   with newer versions of bison.
+
+* Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
+  The original MIPS o32 hard-float ABI requires an FPU where double-precision
+  registers overlay two consecutive single-precision registers.  MIPS32R2
+  introduced a new FPU mode (FR=1) where double-precision registers extend the
+  corresponding single-precision registers which is incompatible with the
+  o32 hard-float ABI.  The MIPS SIMD ASE and the MIPSR6 architecture both
+  require the use of FR=1 making a transition necessary.  New o32 ABI
+  extensions enable users to migrate over time from the original o32 ABI
+  through to the updated o32 FP64 ABI.  To achieve this the dynamic linker now
+  tracks the ABI of any loaded object and verifies that new objects are
+  compatible.  Mode transitions will also be requested as required and
+  unsupportable objects will be rejected.  The ABI checks include both soft and
+  hard float ABIs for o32, n32 and n64.
+
+  GCC 5 with GNU binutils 2.25 onwards:
+  It is strongly recommended that all o32 system libraries are built using the
+  new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
+  with the original and all new o32 ABI extensions.  Configure a MIPS GCC
+  compiler using --with-fp-32=xx to set this by default.
 \f
 Version 2.20