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[PATCH 2/4] Remove the error handling wrapper from log

From: Szabolcs Nagy <Szabolcs dot Nagy at arm dot com>
To: GNU C Library <libc-alpha at sourceware dot org>
Cc: nd <nd at arm dot com>
Date: Fri, 26 Oct 2018 12:50:51 +0000
Subject: [PATCH 2/4] Remove the error handling wrapper from log

Introduce new log 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_log.c and enabled for targets with their own log implementation by
including math/w_log.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 logl was an alias of log, 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 __log_finite symbol is now an alias of log.  Both __log_finite and
log set errno and thus not const functions.

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

On x86_64 #include <math.h> was added before macro definitions that may
affect that header.

Tested with build-many-glibcs.py.

2018-10-26  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.
	* math/w_log.c: New file.
	* sysdeps/i386/fpu/w_log.c: New file.
	* sysdeps/ia64/fpu/e_log.S: Update.
	* sysdeps/ieee754/dbl-64/e_log.c (__ieee754_log): Rename to __log
	and add necessary aliases.
	* sysdeps/ieee754/dbl-64/w_log.c: New file.
	* sysdeps/m68k/m680x0/fpu/w_log.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.
	* sysdeps/x86_64/fpu/multiarch/e_log-avx.c (__ieee754_log): Rename to
	__log.
	* sysdeps/x86_64/fpu/multiarch/e_log-fma.c (__ieee754_log): Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_log-fma4.c (__ieee754_log): Likewise.
	* sysdeps/x86_64/fpu/multiarch/e_log.c (__ieee754_log): Likewise.
	* sysdeps/x86_64/fpu/multiarch/w_log.c: New file.

diff --git a/math/Versions b/math/Versions
index 29e02d6654..87aa6590ed 100644
--- a/math/Versions
+++ b/math/Versions
@@ -577,6 +577,6 @@ libm {
   }
   GLIBC_2.29 {
     # No SVID compatible error handling.
-    exp; exp2;
+    exp; exp2; log;
   }
 }
diff --git a/math/w_log.c b/math/w_log.c
new file mode 100644
index 0000000000..50065e302f
--- /dev/null
+++ b/math/w_log.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_log_template.c>
+versioned_symbol (libm, __log, log, GLIBC_2_29);
+libm_alias_double_other (__log, log)
diff --git a/math/w_log_compat.c b/math/w_log_compat.c
index 5413b8e8df..d99dd4f689 100644
--- a/math/w_log_compat.c
+++ b/math/w_log_compat.c
@@ -23,10 +23,12 @@
 #include <libm-alias-double.h>
 
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_29) \
+			 || defined NO_LONG_DOUBLE \
+			 || defined LONG_DOUBLE_COMPAT)
 /* wrapper log(x) */
 double
-__log (double x)
+__log_compat (double x)
 {
   if (__builtin_expect (islessequal (x, 0.0), 0) && _LIB_VERSION != _IEEE_)
     {
@@ -44,5 +46,17 @@ __log (double x)
 
   return  __ieee754_log (x);
 }
-libm_alias_double (__log, log)
+# if SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_29)
+compat_symbol (libm, __log_compat, log, GLIBC_2_0);
+# endif
+# ifdef NO_LONG_DOUBLE
+weak_alias (__log_compat, logl)
+# endif
+# ifdef LONG_DOUBLE_COMPAT
+/* Work around gas bug "multiple versions for symbol".  */
+weak_alias (__log_compat, __log_compat_alias)
+
+LONG_DOUBLE_COMPAT_CHOOSE_libm_logl (
+  compat_symbol (libm, __log_compat_alias, logl, FIRST_VERSION_libm_logl), );
+# endif
 #endif
diff --git a/sysdeps/i386/fpu/w_log.c b/sysdeps/i386/fpu/w_log.c
new file mode 100644
index 0000000000..9b2b018711
--- /dev/null
+++ b/sysdeps/i386/fpu/w_log.c
@@ -0,0 +1 @@
+#include <sysdeps/../math/w_log.c>
diff --git a/sysdeps/ia64/fpu/e_log.S b/sysdeps/ia64/fpu/e_log.S
index 0b63ec43c5..7ee2392acd 100644
--- a/sysdeps/ia64/fpu/e_log.S
+++ b/sysdeps/ia64/fpu/e_log.S
@@ -1670,6 +1670,12 @@ log_libm_err:
 };;
 GLOBAL_IEEE754_END(log)
 libm_alias_double_other (__log, log)
+#ifdef SHARED
+.symver log,log@@GLIBC_2.29
+.weak __log_compat
+.set __log_compat,__log
+.symver __log_compat,log@GLIBC_2.2
+#endif
 
 
 LOCAL_LIBM_ENTRY(__libm_error_region)
diff --git a/sysdeps/ieee754/dbl-64/e_log.c b/sysdeps/ieee754/dbl-64/e_log.c
index a56b714fb7..648fe141df 100644
--- a/sysdeps/ieee754/dbl-64/e_log.c
+++ b/sysdeps/ieee754/dbl-64/e_log.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 __log_data.tab
@@ -42,7 +45,7 @@ top16 (double x)
 
 double
 SECTION
-__ieee754_log (double x)
+__log (double x)
 {
   /* double_t for better performance on targets with FLT_EVAL_METHOD==2.  */
   double_t w, z, r, r2, r3, y, invc, logc, kd, hi, lo;
@@ -127,6 +130,13 @@ __ieee754_log (double x)
   y = lo + r2 * A[0] + r * r2 * (A[1] + r * A[2] + r2 * (A[3] + r * A[4])) + hi;
   return y;
 }
-#ifndef __ieee754_log
-strong_alias (__ieee754_log, __log_finite)
+#ifndef __log
+strong_alias (__log, __ieee754_log)
+strong_alias (__log, __log_finite)
+# if LIBM_SVID_COMPAT
+versioned_symbol (libm, __log, log, GLIBC_2_29);
+libm_alias_double_other (__log, log)
+# else
+libm_alias_double (__log, log)
+# endif
 #endif
diff --git a/sysdeps/ieee754/dbl-64/w_log.c b/sysdeps/ieee754/dbl-64/w_log.c
new file mode 100644
index 0000000000..1cc8931700
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/w_log.c
@@ -0,0 +1 @@
+/* Not needed.  */
diff --git a/sysdeps/m68k/m680x0/fpu/w_log.c b/sysdeps/m68k/m680x0/fpu/w_log.c
new file mode 100644
index 0000000000..9b2b018711
--- /dev/null
+++ b/sysdeps/m68k/m680x0/fpu/w_log.c
@@ -0,0 +1 @@
+#include <sysdeps/../math/w_log.c>
diff --git a/sysdeps/mach/hurd/i386/libm.abilist b/sysdeps/mach/hurd/i386/libm.abilist
index ff0a06fdb8..144bdb9cac 100644
--- a/sysdeps/mach/hurd/i386/libm.abilist
+++ b/sysdeps/mach/hurd/i386/libm.abilist
@@ -1070,3 +1070,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libm.abilist b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
index cfb8f7d729..6785ac6aa2 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
@@ -1034,3 +1034,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/alpha/libm.abilist b/sysdeps/unix/sysv/linux/alpha/libm.abilist
index 8a7f92f548..132ea00288 100644
--- a/sysdeps/unix/sysv/linux/alpha/libm.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist
@@ -1045,6 +1045,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 a4a2c9b5e0..45a233785d 100644
--- a/sysdeps/unix/sysv/linux/arm/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libm.abilist
@@ -455,6 +455,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 c665d65ef1..b0689ff6c5 100644
--- a/sysdeps/unix/sysv/linux/hppa/libm.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist
@@ -766,4 +766,5 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 6728695daa..3afd304881 100644
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -1077,3 +1077,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/ia64/libm.abilist b/sysdeps/unix/sysv/linux/ia64/libm.abilist
index 3a5d2fb84d..637fd150c2 100644
--- a/sysdeps/unix/sysv/linux/ia64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libm.abilist
@@ -1007,3 +1007,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
index a4a2c9b5e0..45a233785d 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
@@ -455,6 +455,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 84a580a3a0..b1689c2e65 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
@@ -806,3 +806,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
index f2c3143b70..ae59dfbd66 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
@@ -767,3 +767,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
index 7ecaeea9d5..38c665147a 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
@@ -766,4 +766,5 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 c3679e812c..09777c71c7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
@@ -1034,3 +1034,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/nios2/libm.abilist b/sysdeps/unix/sysv/linux/nios2/libm.abilist
index 2964682f19..59fc049b86 100644
--- a/sysdeps/unix/sysv/linux/nios2/libm.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libm.abilist
@@ -767,3 +767,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
index f7ceb788ce..7788f76e81 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
@@ -812,6 +812,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 7e1c1b559a..cae3604a00 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
@@ -811,6 +811,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 de18417d46..732825e015 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
@@ -1078,3 +1078,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
index 6dd35dbb28..59f083dda7 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
@@ -490,6 +490,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 b33b21431f..5a68b2701b 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
@@ -1035,6 +1035,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 567059b054..364f7e63d4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
@@ -1035,6 +1035,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 baea13116d..489f34db57 100644
--- a/sysdeps/unix/sysv/linux/sh/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libm.abilist
@@ -766,4 +766,5 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 7249346330..288986f228 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
@@ -1042,6 +1042,7 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log 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 629fb08f54..11fb7e4597 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
@@ -1034,3 +1034,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
index ac703100df..9fd399d31a 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
@@ -1068,3 +1068,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
index 55098e04c8..bbea57551d 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
@@ -1068,3 +1068,4 @@ GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
 GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
+GLIBC_2.29 log F
diff --git a/sysdeps/x86_64/fpu/multiarch/e_log-avx.c b/sysdeps/x86_64/fpu/multiarch/e_log-avx.c
index b22a5767be..b9f5be55fb 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_log-avx.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_log-avx.c
@@ -1,4 +1,5 @@
-#define __ieee754_log __ieee754_log_avx
+#include <math.h>
+#define __log __ieee754_log_avx
 #define SECTION __attribute__ ((section (".text.avx")))
 
 #include <sysdeps/ieee754/dbl-64/e_log.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_log-fma.c b/sysdeps/x86_64/fpu/multiarch/e_log-fma.c
index bce0ee03c2..13b0a2ae4f 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_log-fma.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_log-fma.c
@@ -1,4 +1,5 @@
-#define __ieee754_log __ieee754_log_fma
+#include <math.h>
+#define __log __ieee754_log_fma
 #define SECTION __attribute__ ((section (".text.fma")))
 
 #include <sysdeps/ieee754/dbl-64/e_log.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_log-fma4.c b/sysdeps/x86_64/fpu/multiarch/e_log-fma4.c
index f458f9c23c..16ef3ab837 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_log-fma4.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_log-fma4.c
@@ -1,4 +1,5 @@
-#define __ieee754_log __ieee754_log_fma4
+#include <math.h>
+#define __log __ieee754_log_fma4
 #define SECTION __attribute__ ((section (".text.fma4")))
 
 #include <sysdeps/ieee754/dbl-64/e_log.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/e_log.c b/sysdeps/x86_64/fpu/multiarch/e_log.c
index e0a1b02fae..0cd2072325 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_log.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_log.c
@@ -16,6 +16,8 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <math.h>
+
 extern double __redirect_ieee754_log (double);
 
 #define SYMBOL_NAME ieee754_log
@@ -25,5 +27,5 @@ libc_ifunc_redirected (__redirect_ieee754_log, __ieee754_log,
 		       IFUNC_SELECTOR ());
 strong_alias (__ieee754_log, __log_finite)
 
-#define __ieee754_log __ieee754_log_sse2
+#define __log __ieee754_log_sse2
 #include <sysdeps/ieee754/dbl-64/e_log.c>
diff --git a/sysdeps/x86_64/fpu/multiarch/w_log.c b/sysdeps/x86_64/fpu/multiarch/w_log.c
new file mode 100644
index 0000000000..9b2b018711
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/w_log.c
@@ -0,0 +1 @@
+#include <sysdeps/../math/w_log.c>

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