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718d6542f2
glibc/sysdeps/unix/sysv/linux/mips
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Szabolcs Nagy 718d6542f2 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.
2018-11-21 09:57:21 +00:00
..
bits Y2038: provide size of default time_t for target architecture 2018-10-24 11:37:09 +02:00
mips32 Remove the error handling wrapper from log2 2018-11-21 09:57:21 +00:00
mips64 Remove the error handling wrapper from log2 2018-11-21 09:57:21 +00:00
sys Unify some sys/procfs.h headers. 2018-09-25 16:48:15 +00:00
____longjmp_chk.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
_test_and_set.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
brk.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
clone.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
configure LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
configure.ac
dl-cache.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-static.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getmsg.c
getrlimit64.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getsysstats.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Implies
init-first.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
kernel_rt_sigframe.h Rename struct ucontext tag (bug 21457). 2017-06-26 22:03:58 +00:00
kernel_sigaction.h linux: Consolidate sigaction implementation 2018-04-05 17:09:50 -03:00
kernel_stat.h
kernel_termios.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
kernel-features.h Refactor Linux ARCH_FORK implementation 2018-03-07 17:39:40 -03:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-abis libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] 2018-07-05 18:06:43 +01:00
libc-vdso.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
makecontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Makefile Remove abi-*-options compiler flags 2017-08-28 17:16:53 +02:00
pipe.S
profil-counter.h
pt-vfork.S
putmsg.c
readelflib.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
register-dump.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
setcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
setrlimit64.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
shlib-versions
sigcontextinfo.h Remove unused frame.h header, sigcontextinfo.h macros. 2018-03-22 16:40:51 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
syscalls.list
ucontext_i.sym
ustat.c Deprecate ustat syscall interface 2018-05-02 08:43:31 -03:00
Versions
vfork.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
xstatconv.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00