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 380f6a2..2fbdb2f 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 0000000..cda0c3a
--- /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 295c162..3caa310 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 0000000..d960e01
--- /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 7cdacdf..936b3a6 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 0000000..a183483
--- /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 39e818a..7745639 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