New symbol version for logf, log2f and powf without SVID compat

This patch changes the logf, log2f and powf error handling semantics
to only set errno accoring to POSIX rules. New symbol version is
introduced at GLIBC_2.27.

The old wrappers are kept for compat symbols.

ia64 needed assembly change to have the new and compat versioned
symbol map to the same function.

All linux libm abilists are updated.

	* math/Versions (logf): New libm symbol at GLIBC_2.27.
	(log2f): Likewise.
	(powf): Likewise.
	* math/w_log2f.c: New file.
	* math/w_logf.c: New file.
	* math/w_powf.c: New file.
	* math/w_log2f_compat.c (__log2f_compat): For compat symbol only.
	* math/w_logf_compat.c (__logf_compat): Likewise.
	* math/w_powf_compat.c (__powf_compat): Likewise.
	* sysdeps/ia64/fpu/e_log2f.S: Add versioned symbols.
	* sysdeps/ia64/fpu/e_logf.S: Likewise.
	* sysdeps/ia64/fpu/e_powf.S: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.

7 files changed, 31 insertions, 10 deletions

diff --git a/math/Versions b/math/Versions
index 380f6a2a1a..2fbdb2f266 100644
--- a/math/Versions
+++ b/math/Versions
@@ -230,6 +230,6 @@ libm {
     fromfpx; fromfpxf; fromfpxl; ufromfpx; ufromfpxf; ufromfpxl;
   }
   GLIBC_2.27 {
-    expf; exp2f;
+    expf; exp2f; logf; log2f; powf;
   }
 }
diff --git a/math/w_log2f.c b/math/w_log2f.c
new file mode 100644
index 0000000000..cda0c3a644
--- /dev/null
+++ b/math/w_log2f.c
@@ -0,0 +1,7 @@
+#include <math-type-macros-float.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, __log2f, log2f, GLIBC_2_27);
diff --git a/math/w_log2f_compat.c b/math/w_log2f_compat.c
index 295c1620f7..3caa310c51 100644
--- a/math/w_log2f_compat.c
+++ b/math/w_log2f_compat.c
@@ -23,10 +23,10 @@
 #include <libm-alias-float.h>
 
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
 /* wrapper log2f(x) */
 float
-__log2f (float x)
+__log2f_compat (float x)
 {
   if (__builtin_expect (islessequal (x, 0.0f), 0) && _LIB_VERSION != _IEEE_)
     {
@@ -44,5 +44,5 @@ __log2f (float x)
 
   return  __ieee754_log2f (x);
 }
-libm_alias_float (__log2, log2)
+compat_symbol (libm, __log2f_compat, log2f, GLIBC_2_1);
 #endif
diff --git a/math/w_logf.c b/math/w_logf.c
new file mode 100644
index 0000000000..d960e016d7
--- /dev/null
+++ b/math/w_logf.c
@@ -0,0 +1,7 @@
+#include <math-type-macros-float.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, __logf, logf, GLIBC_2_27);
diff --git a/math/w_logf_compat.c b/math/w_logf_compat.c
index 7cdacdf921..936b3a6e67 100644
--- a/math/w_logf_compat.c
+++ b/math/w_logf_compat.c
@@ -23,10 +23,10 @@
 #include <libm-alias-float.h>
 
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_27)
 /* wrapper logf(x) */
 float
-__logf (float x)
+__logf_compat (float x)
 {
   if (__builtin_expect (islessequal (x, 0.0f), 0) && _LIB_VERSION != _IEEE_)
     {
@@ -44,5 +44,5 @@ __logf (float x)
 
   return  __ieee754_logf (x);
 }
-libm_alias_float (__log, log)
+compat_symbol (libm, __logf_compat, logf, GLIBC_2_0);
 #endif
diff --git a/math/w_powf.c b/math/w_powf.c
new file mode 100644
index 0000000000..a18348329e
--- /dev/null
+++ b/math/w_powf.c
@@ -0,0 +1,7 @@
+#include <math-type-macros-float.h>
+#undef __USE_WRAPPER_TEMPLATE
+#define __USE_WRAPPER_TEMPLATE 1
+#undef declare_mgen_alias
+#define declare_mgen_alias(a, b)
+#include <w_pow_template.c>
+versioned_symbol (libm, __powf, powf, GLIBC_2_27);
diff --git a/math/w_powf_compat.c b/math/w_powf_compat.c
index 39e818af7e..7745639efe 100644
--- a/math/w_powf_compat.c
+++ b/math/w_powf_compat.c
@@ -22,10 +22,10 @@
 #include <libm-alias-float.h>
 
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_27)
 /* wrapper powf */
 float
-__powf (float x, float y)
+__powf_compat (float x, float y)
 {
   float z = __ieee754_powf (x, y);
   if (__glibc_unlikely (!isfinite (z)))
@@ -60,5 +60,5 @@ __powf (float x, float y)
 
   return z;
 }
-libm_alias_float (__pow, pow)
+compat_symbol (libm, __powf_compat, powf, GLIBC_2_0);
 #endif