glibc/SOURCES/glibc-rh1956357-7.patch

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2021-10-06 15:09:51 +00:00
commit 17a73a6d8b4c46f3e87fc53c7c25fa7cec01d707
Author: Raoni Fassina Firmino <raoni@linux.ibm.com>
Date: Mon May 3 16:59:35 2021 -0300
powerpc64le: Fix ifunc selection for memset, memmove, bzero and bcopy
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>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/bcopy.c b/sysdeps/powerpc/powerpc64/multiarch/bcopy.c
index 705fef33d4e57557..3c6528e5dbccfdbd 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/bcopy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/bcopy.c
@@ -28,10 +28,10 @@ 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)
- ? __bcopy_power10 :
+ (hwcap2 & PPC_FEATURE2_ARCH_3_1
+ && hwcap2 & PPC_FEATURE2_HAS_ISEL
+ && hwcap & PPC_FEATURE_HAS_VSX)
+ ? __bcopy_power10 :
#endif
(hwcap & PPC_FEATURE_HAS_VSX)
? __bcopy_power7
diff --git a/sysdeps/powerpc/powerpc64/multiarch/bzero.c b/sysdeps/powerpc/powerpc64/multiarch/bzero.c
index 4ce98e324d12a31e..b08b381b4a3999f1 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/bzero.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/bzero.c
@@ -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
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index 11532f77d4d03b2a..6e36659d1903448a 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -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,
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memmove.c b/sysdeps/powerpc/powerpc64/multiarch/memmove.c
index 2fd7b6d309e4bedd..27895faad0cab40e 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memmove.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memmove.c
@@ -36,10 +36,10 @@ 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)
- ? __memmove_power10 :
+ (hwcap2 & PPC_FEATURE2_ARCH_3_1
+ && hwcap2 & PPC_FEATURE2_HAS_ISEL
+ && hwcap & PPC_FEATURE_HAS_VSX)
+ ? __memmove_power10 :
#endif
(hwcap & PPC_FEATURE_HAS_VSX)
? __memmove_power7
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memset.c b/sysdeps/powerpc/powerpc64/multiarch/memset.c
index 4c97622c7d7eb8aa..685623ae870a0725 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memset.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memset.c
@@ -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