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Base powerpc logbl compat symbols on __logb not logb. 

Some powerpc logb implementations define a compat symbol for logbl
based on logb, whereas libm_alias_double defines such a compat symbol
based on __logb instead.  This difference (logb is weak, __logb isn't)
is enough to result in different installed stripped shared libraries.
The difference in the installed libraries isn't significant, but first
changing the compat_symbol calls helps make it possible to validate a
subsequent change to use libm_alias_double by comparison of libraries,
so this patch does such a preliminary change.

Tested with build-many-glibcs.py for all its hard-float powerpc
configurations.

	* sysdeps/powerpc/power7/fpu/s_logb.c
	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Define as compat
	symbol based on __logb, not on logb.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
This commit is contained in:
Joseph Myers 2017-12-01 23:37:46 +00:00
parent 51ea3b2042
commit 0d5ba561c1
4 changed files with 11 additions and 3 deletions
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8
ChangeLog
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@ -1,5 +1,13 @@
2017-12-01 Joseph Myers <joseph@codesourcery.com>
* sysdeps/powerpc/power7/fpu/s_logb.c
[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Define as compat
symbol based on __logb, not on logb.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
* sysdeps/powerpc/fpu/s_rint.c: Include <libm-alias-double.h>.
(rint): Define using libm_alias_double.
* sysdeps/powerpc/power5+/fpu/s_modf.c: Include

2
sysdeps/powerpc/power7/fpu/s_logb.c
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@ -75,5 +75,5 @@ weak_alias (__logb, logbl)
#endif
#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
compat_symbol (libm, logb, logbl, GLIBC_2_0);
compat_symbol (libm, __logb, logbl, GLIBC_2_0);
#endif

2
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
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@ -37,5 +37,5 @@ weak_alias (__logb, logbl)
#endif
#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
compat_symbol (libm, logb, logbl, GLIBC_2_0);
compat_symbol (libm, __logb, logbl, GLIBC_2_0);
#endif

2
sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
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@ -37,5 +37,5 @@ weak_alias (__logb, logbl)
#endif
#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
compat_symbol (libm, logb, logbl, GLIBC_2_0);
compat_symbol (libm, __logb, logbl, GLIBC_2_0);
#endif