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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-10-04 17:44:08 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-11-06 17:37:57 -0200 |
| commit | 802c1f1645d626c1297246d62f5586734686a128 (patch) | |
| tree | c0ef0545b4d9382385f2242d3f86ae9fbd1bcda6 /ChangeLog | |
| parent | abcb584d0eae7270b35e1b3fed1f9661e26b8be0 (diff) | |
| download | glibc-802c1f1645d626c1297246d62f5586734686a128.zip glibc-802c1f1645d626c1297246d62f5586734686a128.tar.gz glibc-802c1f1645d626c1297246d62f5586734686a128.tar.bz2 | |
arm: Implement memcpy ifunc selection in C
This patch refactor ARM memcpy ifunc selector to a C implementation.
No functional change is expected, including ifunc resolution rules.
It also adds some cleanup:
- Internal memcpy hidden definition (__GI_memcpy) is now a hidden
symbol.
- No need to create hidden definition for the ifunc variants.
Checked on armv7-linux-gnueabihf and with a build for arm-linux-gnueabi,
arm-linux-gnueabihf with and without multiarch support and with both
GCC 7.1 and GCC mainline. I also checked with the some possible
multiarch different configurations that trigger different memcpy
buids (__ARM_NEON__ && !__SOFT_FP__, !__ARM_NEON__ && !__SOFT_FP__, and
!__ARM_NEON__ && __SOFT_FP__).
* sysdeps/arm/arm-ifunc.h: New file.
* sysdeps/arm/armv7/multiarch/ifunc-memcpy.h: Likewise.
* sysdeps/arm/armv7/multiarch/memcpy.c: Likewise.
* sysdeps/arm/armv7/multiarch/memcpy_arm.S: Likewise.
* sysdeps/arm/armv7/multiarch/rtld-memcpy.S: Likewise.
* sysdeps/arm/armv7/multiarch/memcpy_neon.S [!__ARM_NEON__]
(__memcpy_neon): Avoid create hidden alias.
* sysdeps/arm/armv7/multiarch/memcpy_vfp.S [!__ARM_NEON_]
(__memcpy_vfp): Likewise.
* sysdeps/arm/armv7/multiarch/Makefile [$(subdir) = string]
(sysdep_routines): Add memcpy_arm.
* sysdeps/arm/armv7/multiarch/memcpy.S: Remove file.
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -1,3 +1,18 @@ +2017-11-06 Adhemerval Zanella <adhemerval.zanella@linaro.org> + + * sysdeps/arm/arm-ifunc.h: New file. + * sysdeps/arm/armv7/multiarch/ifunc-memcpy.h: Likewise. + * sysdeps/arm/armv7/multiarch/memcpy.c: Likewise. + * sysdeps/arm/armv7/multiarch/memcpy_arm.S: Likewise. + * sysdeps/arm/armv7/multiarch/rtld-memcpy.S: Likewise. + * sysdeps/arm/armv7/multiarch/memcpy_neon.S [!__ARM_NEON__] + (__memcpy_neon): Avoid create hidden alias. + * sysdeps/arm/armv7/multiarch/memcpy_vfp.S [!__ARM_NEON_] + (__memcpy_vfp): Likewise. + * sysdeps/arm/armv7/multiarch/Makefile [$(subdir) = string] + (sysdep_routines): Add memcpy_arm. + * sysdeps/arm/armv7/multiarch/memcpy.S: Remove file. + 2017-11-06 H.J. Lu <hongjiu.lu@intel.com> [BZ #22362] |