Remove the error handling wrapper from log2

Introduce new log2 symbol version that doesn't do SVID compatible error
handling.  The standard errno and fp exception based error handling is
inline in the new code and does not have significant overhead.

The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty
w_log2.c and enabled for targets with their own log2 implementation by
including math/w_log2.c.

The compatibility symbol version still uses the wrapper with SVID error
handling around the new code.  There is no new symbol version nor
compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv).

On targets where previously log2l was an alias of log2, now it points to
the compatibility symbol with the wrapper, because it still need the
SVID compatible error handling.  This affects NO_LONG_DOUBLE (e.g. arm)
and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well.

The __log2_finite symbol is now an alias of log2.  Both __log2_finite
and log2 set errno and thus not const functions.

The ia64 asm is changed so the compat and new symbol versions map to the
same address.

Tested with build-many-glibcs.py.

	* math/Versions (GLIBC_2.29): Add log2.
	* math/w_log2_compat.c (__log2_compat): Change to versioned compat
	symbol.
	* math/w_log2.c: New file.
	* sysdeps/i386/fpu/w_log2.c: New file.
	* sysdeps/ia64/fpu/e_log2.S: Add versioned symbols.
	* sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Rename to __log2
	and add necessary aliases.
	* sysdeps/ieee754/dbl-64/w_log2.c: New file.
	* sysdeps/m68k/m680x0/fpu/w_log2.c: New file.
	* sysdeps/mach/hurd/i386/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.

33 files changed, 112 insertions, 10 deletions

diff --git a/ChangeLog b/ChangeLog
index 206d216..94d0b97 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,42 @@
 2018-11-21  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
+	* math/Versions (GLIBC_2.29): Add log2.
+	* math/w_log2_compat.c (__log2_compat): Change to versioned compat
+	symbol.
+	* math/w_log2.c: New file.
+	* sysdeps/i386/fpu/w_log2.c: New file.
+	* sysdeps/ia64/fpu/e_log2.S: Add versioned symbols.
+	* sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Rename to __log2
+	and add necessary aliases.
+	* sysdeps/ieee754/dbl-64/w_log2.c: New file.
+	* sysdeps/m68k/m680x0/fpu/w_log2.c: New file.
+	* sysdeps/mach/hurd/i386/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
+
+2018-11-21  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
 	* math/Versions (GLIBC_2.29): Add log.
 	* math/w_log_compat.c (__log_compat): Change to versioned compat
 	symbol.
diff --git a/math/Versions b/math/Versions
index 87aa659..a887602 100644
--- a/math/Versions
+++ b/math/Versions
@@ -577,6 +577,6 @@ libm {
   }
   GLIBC_2.29 {
     # No SVID compatible error handling.
-    exp; exp2; log;
+    exp; exp2; log; log2;
   }
 }
diff --git a/math/w_log2.c b/math/w_log2.c
new file mode 100644
index 0000000..148d5d4
--- /dev/null
+++ b/math/w_log2.c
@@ -0,0 +1,8 @@
+#include <math-type-macros-double.h>
+#undef __USE_WRAPPER_TEMPLATE
+#define __USE_WRAPPER_TEMPLATE 1
+#undef declare_mgen_alias
+#define declare_mgen_alias(a, b)
+#include <w_log2_template.c>
+versioned_symbol (libm, __log2, log2, GLIBC_2_29);
+libm_alias_double_other (__log2, log2)
diff --git a/math/w_log2_compat.c b/math/w_log2_compat.c
index 61e7170..4459ce2 100644
--- a/math/w_log2_compat.c
+++ b/math/w_log2_compat.c
@@ -23,10 +23,12 @@
 #include <libm-alias-double.h>
 
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29) \
+			 || defined NO_LONG_DOUBLE \
+			 || defined LONG_DOUBLE_COMPAT)
 /* wrapper log2(x) */
 double
-__log2 (double x)
+__log2_compat (double x)
 {
   if (__builtin_expect (islessequal (x, 0.0), 0) && _LIB_VERSION != _IEEE_)
     {
@@ -44,5 +46,17 @@ __log2 (double x)
 
   return  __ieee754_log2 (x);
 }
-libm_alias_double (__log2, log2)
+# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29)
+compat_symbol (libm, __log2_compat, log2, GLIBC_2_1);
+# endif
+# ifdef NO_LONG_DOUBLE
+weak_alias (__log2_compat, log2l)
+# endif
+# ifdef LONG_DOUBLE_COMPAT
+/* Work around gas bug "multiple versions for symbol".  */
+weak_alias (__log2_compat, __log2_compat_alias)
+
+LONG_DOUBLE_COMPAT_CHOOSE_libm_log2l (
+  compat_symbol (libm, __log2_compat_alias, log2l, FIRST_VERSION_libm_log2l), );
+# endif
 #endif
diff --git a/sysdeps/i386/fpu/w_log2.c b/sysdeps/i386/fpu/w_log2.c
new file mode 100644
index 0000000..eafbe5c
--- /dev/null
+++ b/sysdeps/i386/fpu/w_log2.c
@@ -0,0 +1 @@
+#include <sysdeps/../math/w_log2.c>
diff --git a/sysdeps/ia64/fpu/e_log2.S b/sysdeps/ia64/fpu/e_log2.S
index 17893a2..eecd72a 100644
--- a/sysdeps/ia64/fpu/e_log2.S
+++ b/sysdeps/ia64/fpu/e_log2.S
@@ -385,7 +385,7 @@ LOCAL_OBJECT_END(T_table)
 
 
 .section .text
-GLOBAL_LIBM_ENTRY(log2)
+WEAK_LIBM_ENTRY(log2)
 
 { .mfi
   alloc r32=ar.pfs,1,4,4,0
@@ -653,8 +653,14 @@ SPECIAL_LOG2:
   br.ret.sptk b0;;
 }
 
-GLOBAL_LIBM_END(log2)
-libm_alias_double_other (log2, log2)
+WEAK_LIBM_END(log2)
+libm_alias_double_other (__log2, log2)
+#ifdef SHARED
+.symver log2,log2@@GLIBC_2.29
+.weak __log2_compat
+.set __log2_compat,__log2
+.symver __log2_compat,log2@GLIBC_2.2
+#endif
 
 
 LOCAL_LIBM_ENTRY(__libm_error_region)
diff --git a/sysdeps/ieee754/dbl-64/e_log2.c b/sysdeps/ieee754/dbl-64/e_log2.c
index 916eb46..6bb1c05 100644
--- a/sysdeps/ieee754/dbl-64/e_log2.c
+++ b/sysdeps/ieee754/dbl-64/e_log2.c
@@ -18,6 +18,9 @@
 
 #include <math.h>
 #include <stdint.h>
+#include <math-svid-compat.h>
+#include <shlib-compat.h>
+#include <libm-alias-double.h>
 #include "math_config.h"
 
 #define T __log2_data.tab
@@ -37,7 +40,7 @@ top16 (double x)
 }
 
 double
-__ieee754_log2 (double x)
+__log2 (double x)
 {
   /* double_t for better performance on targets with FLT_EVAL_METHOD==2.  */
   double_t z, r, r2, r4, y, invc, logc, kd, hi, lo, t1, t2, t3, p;
@@ -136,6 +139,13 @@ __ieee754_log2 (double x)
   y = lo + r2 * p + hi;
   return y;
 }
-#ifndef __ieee754_log2
-strong_alias (__ieee754_log2, __log2_finite)
+#ifndef __log2
+strong_alias (__log2, __ieee754_log2)
+strong_alias (__log2, __log2_finite)
+# if LIBM_SVID_COMPAT
+versioned_symbol (libm, __log2, log2, GLIBC_2_29);
+libm_alias_double_other (__log2, log2)
+# else
+libm_alias_double (__log2, log2)
+# endif
 #endif
diff --git a/sysdeps/ieee754/dbl-64/w_log2.c b/sysdeps/ieee754/dbl-64/w_log2.c
new file mode 100644
index 0000000..1cc8931
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/w_log2.c
@@ -0,0 +1 @@
+/* Not needed.  */
diff --git a/sysdeps/m68k/m680x0/fpu/w_log2.c b/sysdeps/m68k/m680x0/fpu/w_log2.c
new file mode 100644
index 0000000..eafbe5c
--- /dev/null
+++ b/sysdeps/m68k/m680x0/fpu/w_log2.c
@@ -0,0 +1 @@
+#include <sysdeps/../math/w_log2.c>
diff --git a/sysdeps/mach/hurd/i386/libm.abilist b/sysdeps/mach/hurd/i386/libm.abilist
index 144bdb9..f319580 100644
--- a/sysdeps/mach/hurd/i386/libm.abilist
+++ b/sysdeps/mach/hurd/i386/libm.abilist
@@ -1071,3 +1071,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libm.abilist b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
index 6785ac6..c01ff24 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
@@ -1035,3 +1035,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/alpha/libm.abilist b/sysdeps/unix/sysv/linux/alpha/libm.abilist
index 132ea00..f5ec874 100644
--- a/sysdeps/unix/sysv/linux/alpha/libm.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist
@@ -1046,6 +1046,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.3.4 __c1_cabsf F
 GLIBC_2.3.4 __c1_cacosf F
 GLIBC_2.3.4 __c1_cacoshf F
diff --git a/sysdeps/unix/sysv/linux/arm/libm.abilist b/sysdeps/unix/sysv/linux/arm/libm.abilist
index 45a2337..9b7d87b 100644
--- a/sysdeps/unix/sysv/linux/arm/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libm.abilist
@@ -456,6 +456,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F
diff --git a/sysdeps/unix/sysv/linux/hppa/libm.abilist b/sysdeps/unix/sysv/linux/hppa/libm.abilist
index b0689ff..d193f99 100644
--- a/sysdeps/unix/sysv/linux/hppa/libm.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist
@@ -767,4 +767,5 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 exp2l F
diff --git a/sysdeps/unix/sysv/linux/i386/libm.abilist b/sysdeps/unix/sysv/linux/i386/libm.abilist
index 3afd304..eae2c55 100644
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -1078,3 +1078,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/ia64/libm.abilist b/sysdeps/unix/sysv/linux/ia64/libm.abilist
index 637fd15..9796e8d 100644
--- a/sysdeps/unix/sysv/linux/ia64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libm.abilist
@@ -1008,3 +1008,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
index 45a2337..9b7d87b 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
@@ -456,6 +456,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
index b1689c2..f73ad1a 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
@@ -807,3 +807,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
index ae59dfb..dcb7dbb 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
@@ -768,3 +768,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
index 38c6651..1146e2d 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
@@ -767,4 +767,5 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 exp2l F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
index 09777c7..d9c830d 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
@@ -1035,3 +1035,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/nios2/libm.abilist b/sysdeps/unix/sysv/linux/nios2/libm.abilist
index 59fc049..0902ca0 100644
--- a/sysdeps/unix/sysv/linux/nios2/libm.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libm.abilist
@@ -768,3 +768,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
index 7788f76..3e9e5e7 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
@@ -813,6 +813,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
index cae3604..7a3c6be 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
@@ -812,6 +812,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
index 732825e..d50c82c 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
@@ -1079,3 +1079,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
index 59f083d..cbf2ad3 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
@@ -491,6 +491,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.3 _LIB_VERSION D 0x4
 GLIBC_2.3 __clog10 F
 GLIBC_2.3 __clog10f F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
index 5a68b27..382455c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
@@ -1036,6 +1036,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
index 364f7e6..92b794b 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
@@ -1036,6 +1036,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/sh/libm.abilist b/sysdeps/unix/sysv/linux/sh/libm.abilist
index 489f34d..3320f14 100644
--- a/sysdeps/unix/sysv/linux/sh/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libm.abilist
@@ -767,4 +767,5 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 exp2l F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
index 288986f..2a10a0f 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
@@ -1043,6 +1043,7 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
index 11fb7e4..ebbc58d 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
@@ -1035,3 +1035,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
index 9fd399d..3e02619 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
@@ -1069,3 +1069,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
index bbea575..03cd62f 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
@@ -1069,3 +1069,4 @@ GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
+GLIBC_2.29 log2 F