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S390: Use hwcap instead of dl_hwcap in ifunc-resolvers.

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The renaming of hwcap arguments in ifunc-resolvers is needed
in order to prepare for further commits which refactors
ifunc handling for memset, memcmp, and memcpy.  Now you are able
to use s390_libc_ifunc_init which stores the stfle bits
within the expression for an ifunc-resolver generated by
s390_libc_ifunc_expr.

ChangeLog:

	* sysdeps/s390/multiarch/ifunc-resolve.h
	(s390_libc_ifunc_init, s390_libc_ifunc,
	s390_vx_libc_ifunc2_redirected): Use hwcap instead of dl_hwcap.
This commit is contained in:
Stefan Liebler 2018-12-18 13:57:03 +01:00
parent b8686c0d70
commit e8023f2685
2 changed files with 12 additions and 6 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
* sysdeps/s390/multiarch/ifunc-resolve.h
(s390_libc_ifunc_init, s390_libc_ifunc,
s390_vx_libc_ifunc2_redirected): Use hwcap instead of dl_hwcap.
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
* config.h.in (HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT): New undefine.

12
sysdeps/s390/multiarch/ifunc-resolve.h
View File

@ -42,9 +42,9 @@
: : "cc");
#define s390_libc_ifunc_init() \
unsigned long long stfle_bits = 0ULL; \
if (__glibc_likely((dl_hwcap & HWCAP_S390_STFLE) \
&& (dl_hwcap & HWCAP_S390_ZARCH) \
&& (dl_hwcap & HWCAP_S390_HIGH_GPRS))) \
if (__glibc_likely ((hwcap & HWCAP_S390_STFLE) \
&& (hwcap & HWCAP_S390_ZARCH) \
&& (hwcap & HWCAP_S390_HIGH_GPRS))) \
{ \
S390_STORE_STFLE (stfle_bits); \
}
@ -61,7 +61,7 @@
: __glibc_likely (S390_IS_Z10 (stfle_bits)) \
? RESOLVERFUNC##_z10 \
: RESOLVERFUNC##_default, \
unsigned long int dl_hwcap, s390_libc_ifunc_init);
unsigned long int hwcap, s390_libc_ifunc_init);
#define s390_vx_libc_ifunc(FUNC) \
s390_vx_libc_ifunc2_redirected(FUNC, FUNC, FUNC)
@ -79,10 +79,10 @@
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_vx attribute_hidden; \
extern __typeof (TYPE_FUNC) RESOLVERFUNC##_c attribute_hidden; \
__ifunc (TYPE_FUNC, FUNC, \
(dl_hwcap & HWCAP_S390_VX) \
(hwcap & HWCAP_S390_VX) \
? RESOLVERFUNC##_vx \
: RESOLVERFUNC##_c, \
unsigned long int dl_hwcap, s390_vx_libc_ifunc_init);
unsigned long int hwcap, s390_vx_libc_ifunc_init);
#define s390_libc_ifunc_expr_init()
#define s390_libc_ifunc_expr(TYPE_FUNC, FUNC, EXPR) \