lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-10-12 19:04:54 +03:00
Code Activity

powerpc64le: Fix ifunc selection for memset, memmove, bzero and bcopy

Browse Source 
The hwcap2 check for the aforementioned functions should check for
both PPC_FEATURE2_ARCH_3_1 and PPC_FEATURE2_HAS_ISEL but was
mistakenly checking for any one of them, enabling isa 3.1 version of
the functions in incompatible processors, like POWER8.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
This commit is contained in:
Raoni Fassina Firmino
2021-05-03 16:59:35 -03:00
committed by Tulio Magno Quites Machado Filho
parent 310be3cc09
commit 17a73a6d8b
5 changed files with 22 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
sysdeps/powerpc/powerpc64/multiarch/bcopy.c
View File

@@ -28,9 +28,9 @@ extern __typeof (bcopy) __bcopy_power10 attribute_hidden;
libc_ifunc (bcopy,
#ifdef __LITTLE_ENDIAN__
hwcap2 & (PPC_FEATURE2_ARCH_3_1 |
PPC_FEATURE2_HAS_ISEL)
&& (hwcap & PPC_FEATURE_HAS_VSX)
(hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX)
? __bcopy_power10 :
#endif
(hwcap & PPC_FEATURE_HAS_VSX)

3
sysdeps/powerpc/powerpc64/multiarch/bzero.c
View File

@@ -33,7 +33,8 @@ extern __typeof (bzero) __bzero_power10 attribute_hidden;
libc_ifunc (__bzero,
# ifdef __LITTLE_ENDIAN__
(hwcap2 & (PPC_FEATURE2_ARCH_3_1 | PPC_FEATURE2_HAS_ISEL)
(hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX)
? __bzero_power10 :
# endif

20
sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
View File

@@ -75,9 +75,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, memmove,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, memmove,
hwcap2 & (PPC_FEATURE2_ARCH_3_1 |
PPC_FEATURE2_HAS_ISEL)
&& (hwcap & PPC_FEATURE_HAS_VSX),
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX,
__memmove_power10)
#endif
IFUNC_IMPL_ADD (array, i, memmove, hwcap & PPC_FEATURE_HAS_VSX,
@@ -88,8 +88,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, memset,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, memset,
hwcap2 & (PPC_FEATURE2_ARCH_3_1 |
PPC_FEATURE2_HAS_ISEL)
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX,
__memset_power10)
#endif
@@ -196,8 +196,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, bzero,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, bzero,
hwcap2 & (PPC_FEATURE2_ARCH_3_1 |
PPC_FEATURE2_HAS_ISEL)
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX,
__bzero_power10)
#endif
@@ -215,9 +215,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, bcopy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, bcopy,
hwcap2 & (PPC_FEATURE2_ARCH_3_1 |
PPC_FEATURE2_HAS_ISEL)
&& (hwcap & PPC_FEATURE_HAS_VSX),
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX,
__bcopy_power10)
#endif
IFUNC_IMPL_ADD (array, i, bcopy, hwcap & PPC_FEATURE_HAS_VSX,

6
sysdeps/powerpc/powerpc64/multiarch/memmove.c
View File

@@ -36,9 +36,9 @@ extern __typeof (__redirect_memmove) __memmove_power10 attribute_hidden;
libc_ifunc (__libc_memmove,
#ifdef __LITTLE_ENDIAN__
hwcap2 & (PPC_FEATURE2_ARCH_3_1 |
PPC_FEATURE2_HAS_ISEL)
&& (hwcap & PPC_FEATURE_HAS_VSX)
(hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX)
? __memmove_power10 :
#endif
(hwcap & PPC_FEATURE_HAS_VSX)

3
sysdeps/powerpc/powerpc64/multiarch/memset.c
View File

@@ -41,7 +41,8 @@ extern __typeof (__redirect_memset) __memset_power10 attribute_hidden;
ifunc symbol properly. */
libc_ifunc (__libc_memset,
# ifdef __LITTLE_ENDIAN__
(hwcap2 & (PPC_FEATURE2_ARCH_3_1 | PPC_FEATURE2_HAS_ISEL)
(hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX)
? __memset_power10 :
# endif