iconv, localedef: avoid floating point rounding differences [BZ #24372]

[thirdparty/glibc.git] / libc-abis

diff --git a/libc-abis b/libc-abis
index a66a9ec3a458c7aa5068acb60c7e31c2623c983f..e702f6ae245c1528f5a608df8cfae4f037809de2 100644 (file)
--- a/libc-abis
+++ b/libc-abis
@@ -1,16 +1,50 @@
-# See the copy of this file in libc for detailed explanations.  The
-# ports copy needs to include all libc definitions applicable to any
-# ports target; only one copy will be used.
+# Definition of features which introduce new libc ABI versions.  This
+# file is used to create a header file with definitions for the various
+# versions.  The static linker will encode in the EI_ABIVERSION field in
+# the e_ident array in the ELF program header the required ABI version.
+# This is not a bitmask.  The maximum ABI version required must be
+# encoded.
+#
+# Adding new features should always happen by appending new lines.  Never
+# add entries in the middle or where they seem "logical".  Once a version
+# is assigned to a feature it must not change again.  Since some features
+# are conditionally added this can only ever be done securely without much
+# risk is by adding at the end.
+#
+# The following lines have one of two formats:
+#
+#      SYMBOL
+# With just a symbol on the line this is the name of a feature which
+# is architecture independent.
+#
+#      SYMBOL  PLATFORM
+# Using this form architecture (and platform) dependent features can be
+# specified.  The PLATFORM name can use the wildcards available in
+# the Bourne shell's case expression.
+#
+# Note that the same symbol can be used using different platform triples.
+# They don't have to be in the same order relative to other entries.  This
+# can happen if the feature is implemented for different architectures
+# at different times.
+#
+# This file is parsed by a script which produces a header file containing
+# a single enum definition.  An extra symbol is added as entry zero to
+# specify the default ABI with number 0 and an artificial last entry is
+# added to allow computing the maximum ABI version for the platform.
 #
 # Feature Name Configuration
 # ------------ -------------
 #
-# MIPS PLTs.
-MIPS_PLT       mips*-*-linux*
-#
 # Unique symbol definitions for C++.
 # Architecture independent, all ELF targets (== all targets)
 UNIQUE
 #
 # Indirect PLT relocations.  Architecture dependent.
+IFUNC          x86_64-*-linux*
+IFUNC          i?86-*-linux*
+IFUNC          powerpc64-*-linux*
 IFUNC          powerpc-*-linux*
+IFUNC          sparc64-*-linux*
+IFUNC          sparc-*-linux*
+# Absolute (SHN_ABS) symbols working correctly.
+ABSOLUTE