mirror of
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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.
This commit is contained in:
Szabolcs Nagy
parent
f29b7c492d
commit
718d6542f2
37
ChangeLog
37
ChangeLog
@ -1,3 +1,40 @@
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2018-11-21 Szabolcs Nagy <szabolcs.nagy@arm.com>
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* math/Versions (GLIBC_2.29): Add log2.
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* math/w_log2_compat.c (__log2_compat): Change to versioned compat
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symbol.
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* math/w_log2.c: New file.
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* sysdeps/i386/fpu/w_log2.c: New file.
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* sysdeps/ia64/fpu/e_log2.S: Add versioned symbols.
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* sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Rename to __log2
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and add necessary aliases.
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* sysdeps/ieee754/dbl-64/w_log2.c: New file.
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* sysdeps/m68k/m680x0/fpu/w_log2.c: New file.
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* sysdeps/mach/hurd/i386/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
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* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
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2018-11-21 Szabolcs Nagy <szabolcs.nagy@arm.com>
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* math/Versions (GLIBC_2.29): Add log.
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@ -577,6 +577,6 @@ libm {
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}
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GLIBC_2.29 {
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# No SVID compatible error handling.
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exp; exp2; log;
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exp; exp2; log; log2;
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}
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}
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8
math/w_log2.c
Normal file
8
math/w_log2.c
Normal file
@ -0,0 +1,8 @@
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#include <math-type-macros-double.h>
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#undef __USE_WRAPPER_TEMPLATE
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#define __USE_WRAPPER_TEMPLATE 1
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#undef declare_mgen_alias
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#define declare_mgen_alias(a, b)
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#include <w_log2_template.c>
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versioned_symbol (libm, __log2, log2, GLIBC_2_29);
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libm_alias_double_other (__log2, log2)
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@ -23,10 +23,12 @@
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#include <libm-alias-double.h>
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#if LIBM_SVID_COMPAT
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#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29) \
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|| defined NO_LONG_DOUBLE \
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|| defined LONG_DOUBLE_COMPAT)
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/* wrapper log2(x) */
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double
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__log2 (double x)
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__log2_compat (double x)
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{
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if (__builtin_expect (islessequal (x, 0.0), 0) && _LIB_VERSION != _IEEE_)
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{
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@ -44,5 +46,17 @@ __log2 (double x)
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return __ieee754_log2 (x);
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}
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libm_alias_double (__log2, log2)
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# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29)
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compat_symbol (libm, __log2_compat, log2, GLIBC_2_1);
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# endif
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# ifdef NO_LONG_DOUBLE
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weak_alias (__log2_compat, log2l)
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# endif
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# ifdef LONG_DOUBLE_COMPAT
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/* Work around gas bug "multiple versions for symbol". */
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weak_alias (__log2_compat, __log2_compat_alias)
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LONG_DOUBLE_COMPAT_CHOOSE_libm_log2l (
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compat_symbol (libm, __log2_compat_alias, log2l, FIRST_VERSION_libm_log2l), );
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# endif
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#endif
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1
sysdeps/i386/fpu/w_log2.c
Normal file
1
sysdeps/i386/fpu/w_log2.c
Normal file
@ -0,0 +1 @@
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#include <sysdeps/../math/w_log2.c>
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@ -385,7 +385,7 @@ LOCAL_OBJECT_END(T_table)
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.section .text
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GLOBAL_LIBM_ENTRY(log2)
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WEAK_LIBM_ENTRY(log2)
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{ .mfi
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alloc r32=ar.pfs,1,4,4,0
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@ -653,8 +653,14 @@ SPECIAL_LOG2:
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br.ret.sptk b0;;
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}
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GLOBAL_LIBM_END(log2)
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libm_alias_double_other (log2, log2)
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WEAK_LIBM_END(log2)
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libm_alias_double_other (__log2, log2)
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#ifdef SHARED
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.symver log2,log2@@GLIBC_2.29
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.weak __log2_compat
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.set __log2_compat,__log2
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.symver __log2_compat,log2@GLIBC_2.2
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#endif
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LOCAL_LIBM_ENTRY(__libm_error_region)
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@ -18,6 +18,9 @@
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#include <math.h>
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#include <stdint.h>
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#include <math-svid-compat.h>
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#include <shlib-compat.h>
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#include <libm-alias-double.h>
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#include "math_config.h"
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#define T __log2_data.tab
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@ -37,7 +40,7 @@ top16 (double x)
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}
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double
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__ieee754_log2 (double x)
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__log2 (double x)
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{
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/* double_t for better performance on targets with FLT_EVAL_METHOD==2. */
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double_t z, r, r2, r4, y, invc, logc, kd, hi, lo, t1, t2, t3, p;
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@ -136,6 +139,13 @@ __ieee754_log2 (double x)
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y = lo + r2 * p + hi;
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return y;
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}
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#ifndef __ieee754_log2
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strong_alias (__ieee754_log2, __log2_finite)
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#ifndef __log2
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strong_alias (__log2, __ieee754_log2)
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strong_alias (__log2, __log2_finite)
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# if LIBM_SVID_COMPAT
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versioned_symbol (libm, __log2, log2, GLIBC_2_29);
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libm_alias_double_other (__log2, log2)
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# else
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libm_alias_double (__log2, log2)
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# endif
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#endif
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1
sysdeps/ieee754/dbl-64/w_log2.c
Normal file
1
sysdeps/ieee754/dbl-64/w_log2.c
Normal file
@ -0,0 +1 @@
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/* Not needed. */
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1
sysdeps/m68k/m680x0/fpu/w_log2.c
Normal file
1
sysdeps/m68k/m680x0/fpu/w_log2.c
Normal file
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#include <sysdeps/../math/w_log2.c>
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@ -1071,3 +1071,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -1035,3 +1035,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -1046,6 +1046,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.3.4 __c1_cabsf F
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GLIBC_2.3.4 __c1_cacosf F
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GLIBC_2.3.4 __c1_cacoshf F
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@ -456,6 +456,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 _LIB_VERSION D 0x4
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GLIBC_2.4 __clog10 F
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GLIBC_2.4 __clog10f F
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@ -767,4 +767,5 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 exp2l F
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@ -1078,3 +1078,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -1008,3 +1008,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -456,6 +456,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 _LIB_VERSION D 0x4
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GLIBC_2.4 __clog10 F
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GLIBC_2.4 __clog10f F
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@ -807,3 +807,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -768,3 +768,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -767,4 +767,5 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 exp2l F
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@ -1035,3 +1035,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -768,3 +768,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -813,6 +813,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 __clog10l F
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GLIBC_2.4 __finitel F
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GLIBC_2.4 __fpclassifyl F
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@ -812,6 +812,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 __clog10l F
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GLIBC_2.4 __finitel F
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GLIBC_2.4 __fpclassifyl F
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@ -1079,3 +1079,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -491,6 +491,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.3 _LIB_VERSION D 0x4
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GLIBC_2.3 __clog10 F
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GLIBC_2.3 __clog10f F
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@ -1036,6 +1036,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 __clog10l F
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GLIBC_2.4 __finitel F
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GLIBC_2.4 __fpclassifyl F
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@ -1036,6 +1036,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 __clog10l F
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GLIBC_2.4 __finitel F
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GLIBC_2.4 __fpclassifyl F
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@ -767,4 +767,5 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 exp2l F
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@ -1043,6 +1043,7 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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GLIBC_2.4 __clog10l F
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GLIBC_2.4 __finitel F
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GLIBC_2.4 __fpclassifyl F
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@ -1035,3 +1035,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -1069,3 +1069,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
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GLIBC_2.29 log F
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GLIBC_2.29 log2 F
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@ -1069,3 +1069,4 @@ GLIBC_2.28 fsubl F
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GLIBC_2.29 exp F
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GLIBC_2.29 exp2 F
|
||||
GLIBC_2.29 log F
|
||||
GLIBC_2.29 log2 F
|
||||
|
||||
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Reference in New Issue
Block a user