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New expf and exp2f version without SVID compat wrapper 

This patch changes the expf and exp2f 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.

Internal calls to __expf now get the new error semantics, this seems to
only affect sysdeps/i386/fpu/s_expm1f.S where the errno-only behaviour
should be correct.

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 (expf): New libm symbol at GLIBC_2.27.
	(exp2f): Likewise.
	* math/w_exp2f.c: New file.
	* math/w_expf.c: New file.
	* math/w_exp2f_compat.c (__exp2f_compat): For compat symbol only.
	* math/w_expf_compat.c (__expf_compat): Likewise.
	* sysdeps/ia64/fpu/e_exp2f.S: Add versioned symbols.
	* sysdeps/ia64/fpu/e_expf.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.
This commit is contained in:
Szabolcs Nagy 2017-09-12 12:20:50 +01:00
parent 72aa623345
commit f5f0f52651
34 changed files with 158 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
ChangeLog
View File

@ -1,3 +1,46 @@
2017-09-25 Szabolcs Nagy <szabolcs.nagy@arm.com>
* math/Versions (expf): New libm symbol at GLIBC_2.27.
(exp2f): Likewise.
* math/w_exp2f.c: New file.
* math/w_expf.c: New file.
* math/w_exp2f_compat.c (__exp2f_compat): For compat symbol only.
* math/w_expf_compat.c (__expf_compat): Likewise.
* sysdeps/ia64/fpu/e_exp2f.S: Add versioned symbols.
* sysdeps/ia64/fpu/e_expf.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.
2017-09-25 Szabolcs Nagy <szabolcs.nagy@arm.com>
* math/Makefile (type-float-routines): Add math_errf and e_exp2f_data.

3
math/Versions
View File

@ -229,4 +229,7 @@ libm {
fromfp; fromfpf; fromfpl; ufromfp; ufromfpf; ufromfpl;
fromfpx; fromfpxf; fromfpxl; ufromfpx; ufromfpxf; ufromfpxl;
}
GLIBC_2.27 {
expf; exp2f;
}
}

7
math/w_exp2f.c Normal file
View File

@ -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_exp2_template.c>
versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);

6
math/w_exp2f_compat.c
View File

@ -6,9 +6,9 @@
#include <math_private.h>
#include <math-svid-compat.h>
#if LIBM_SVID_COMPAT
#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
float
__exp2f (float x)
__exp2f_compat (float x)
{
float z = __ieee754_exp2f (x);
if (__builtin_expect (!isfinite (z) || z == 0, 0)
@ -18,5 +18,5 @@ __exp2f (float x)
return z;
}
weak_alias (__exp2f, exp2f)
compat_symbol (libm, __exp2f_compat, exp2f, GLIBC_2_1);
#endif

7
math/w_expf.c Normal file
View File

@ -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_exp_template.c>
versioned_symbol (libm, __expf, expf, GLIBC_2_27);

7
math/w_expf_compat.c
View File

@ -20,10 +20,10 @@
#include <math_private.h>
#include <math-svid-compat.h>
#if LIBM_SVID_COMPAT
#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_27)
/* wrapper expf */
float
__expf (float x)
__expf_compat (float x)
{
float z = __ieee754_expf (x);
if (__builtin_expect (!isfinite (z) || z == 0, 0)
@ -32,6 +32,5 @@ __expf (float x)
return z;
}
hidden_def (__expf)
weak_alias (__expf, expf)
compat_symbol (libm, __expf_compat, expf, GLIBC_2_0);
#endif

10
sysdeps/ia64/fpu/e_exp2f.S
View File

@ -221,7 +221,7 @@ LOCAL_OBJECT_END(T_table)
.section .text
GLOBAL_LIBM_ENTRY(exp2f)
GLOBAL_LIBM_ENTRY(__exp2f)
{.mfi
@ -468,7 +468,13 @@ OUT_RANGE_exp2:
}
;;
GLOBAL_LIBM_END(exp2f)
GLOBAL_LIBM_END(__exp2f)
#ifdef SHARED
.symver __exp2f,exp2f@@GLIBC_2.27
.weak __exp2f_compat
.set __exp2f_compat,__exp2f
.symver __exp2f_compat,exp2f@GLIBC_2.2
#endif
LOCAL_LIBM_ENTRY(__libm_error_region)

6
sysdeps/ia64/fpu/e_expf.S
View File

@ -657,6 +657,12 @@ EXP_UNDERFLOW_ZERO:
;;
GLOBAL_IEEE754_END(expf)
#ifdef SHARED
.symver expf,expf@@GLIBC_2.27
.weak __expf_compat
.set __expf_compat,__expf
.symver __expf_compat,expf@GLIBC_2.2
#endif
LOCAL_LIBM_ENTRY(__libm_error_region)

3
sysdeps/unix/sysv/linux/aarch64/libm.abilist
View File

@ -460,3 +460,6 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/alpha/libm.abilist
View File

@ -470,6 +470,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.3.4 GLIBC_2.3.4 A
GLIBC_2.3.4 __c1_cabsf F
GLIBC_2.3.4 __c1_cacosf F

3
sysdeps/unix/sysv/linux/arm/libm.abilist
View File

@ -117,6 +117,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _LIB_VERSION D 0x4
GLIBC_2.4 __clog10 F

3
sysdeps/unix/sysv/linux/hppa/libm.abilist
View File

@ -429,5 +429,8 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 exp2l F

3
sysdeps/unix/sysv/linux/i386/libm.abilist
View File

@ -611,4 +611,7 @@ GLIBC_2.26 ufromfpxf128 F
GLIBC_2.26 y0f128 F
GLIBC_2.26 y1f128 F
GLIBC_2.26 ynf128 F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A

3
sysdeps/unix/sysv/linux/ia64/libm.abilist
View File

@ -540,4 +540,7 @@ GLIBC_2.26 ufromfpxf128 F
GLIBC_2.26 y0f128 F
GLIBC_2.26 y1f128 F
GLIBC_2.26 ynf128 F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A

3
sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
View File

@ -117,6 +117,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _LIB_VERSION D 0x4
GLIBC_2.4 __clog10 F

3
sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
View File

@ -471,4 +471,7 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A

3
sysdeps/unix/sysv/linux/microblaze/libm.abilist
View File

@ -428,3 +428,6 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
View File

@ -430,6 +430,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 exp2l F
_gp_disp _gp_disp A

3
sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
View File

@ -462,4 +462,7 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A

3
sysdeps/unix/sysv/linux/nios2/libm.abilist
View File

@ -428,3 +428,6 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
View File

@ -473,6 +473,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

3
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
View File

@ -472,6 +472,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

3
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
View File

@ -605,3 +605,6 @@ GLIBC_2.26 ufromfpxf128 F
GLIBC_2.26 y0f128 F
GLIBC_2.26 y1f128 F
GLIBC_2.26 ynf128 F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
View File

@ -148,6 +148,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 _LIB_VERSION D 0x4
GLIBC_2.3 __clog10 F

3
sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
View File

@ -460,6 +460,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

3
sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
View File

@ -458,6 +458,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

3
sysdeps/unix/sysv/linux/sh/libm.abilist
View File

@ -429,5 +429,8 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 exp2l F

3
sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
View File

@ -464,6 +464,9 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 __clog10l F
GLIBC_2.4 __finitel F

3
sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
View File

@ -461,4 +461,7 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A

3
sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
View File

@ -429,3 +429,6 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
View File

@ -429,3 +429,6 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
View File

@ -429,3 +429,6 @@ GLIBC_2.25 ufromfpl F
GLIBC_2.25 ufromfpx F
GLIBC_2.25 ufromfpxf F
GLIBC_2.25 ufromfpxl F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F

3
sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
View File

@ -600,4 +600,7 @@ GLIBC_2.26 ufromfpxf128 F
GLIBC_2.26 y0f128 F
GLIBC_2.26 y1f128 F
GLIBC_2.26 ynf128 F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F
GLIBC_2.4 GLIBC_2.4 A

3
sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
View File

@ -599,3 +599,6 @@ GLIBC_2.26 ufromfpxf128 F
GLIBC_2.26 y0f128 F
GLIBC_2.26 y1f128 F
GLIBC_2.26 ynf128 F
GLIBC_2.27 GLIBC_2.27 A
GLIBC_2.27 exp2f F
GLIBC_2.27 expf F