[4/7] Add entry points for __mempcpy_sse2_unaligned and _chk functions
Commit Message
Add entry points for __mempcpy_chk_sse2_unaligned,
__mempcpy_sse2_unaligned and __memcpy_chk_sse2_unaligned.
[BZ #19776]
* sysdeps/x86_64/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Test __memcpy_chk_sse2_unaligned,
__mempcpy_chk_sse2_unaligned and __mempcpy_sse2_unaligned.
* sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S
(__mempcpy_chk_sse2_unaligned): New.
(__mempcpy_sse2_unaligned): Likewise.
(__memcpy_chk_sse2_unaligned): Likewise.
(L(start): New label.
---
sysdeps/x86_64/multiarch/ifunc-impl-list.c | 6 ++++++
sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S | 20 ++++++++++++++++++++
2 files changed, 26 insertions(+)
@@ -278,6 +278,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
HAS_CPU_FEATURE (SSSE3),
__memcpy_chk_ssse3)
IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1,
+ __memcpy_chk_sse2_unaligned)
+ IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1,
__memcpy_chk_sse2))
/* Support sysdeps/x86_64/multiarch/memcpy.S. */
@@ -314,6 +316,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
HAS_CPU_FEATURE (SSSE3),
__mempcpy_chk_ssse3)
IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1,
+ __mempcpy_chk_sse2_unaligned)
+ IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1,
__mempcpy_chk_sse2))
/* Support sysdeps/x86_64/multiarch/mempcpy.S. */
@@ -330,6 +334,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__mempcpy_ssse3_back)
IFUNC_IMPL_ADD (array, i, mempcpy, HAS_CPU_FEATURE (SSSE3),
__mempcpy_ssse3)
+ IFUNC_IMPL_ADD (array, i, mempcpy, 1,
+ __mempcpy_sse2_unaligned)
IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_sse2))
/* Support sysdeps/x86_64/multiarch/strncmp.S. */
@@ -22,9 +22,29 @@
#include "asm-syntax.h"
+# ifdef SHARED
+ENTRY (__mempcpy_chk_sse2_unaligned)
+ cmpq %rdx, %rcx
+ jb HIDDEN_JUMPTARGET (__chk_fail)
+END (__mempcpy_chk_sse2_unaligned)
+# endif
+
+ENTRY (__mempcpy_sse2_unaligned)
+ mov %rdi, %rax
+ add %rdx, %rax
+ jmp L(start)
+END (__mempcpy_sse2_unaligned)
+
+# ifdef SHARED
+ENTRY (__memcpy_chk_sse2_unaligned)
+ cmpq %rdx, %rcx
+ jb HIDDEN_JUMPTARGET (__chk_fail)
+END (__memcpy_chk_sse2_unaligned)
+# endif
ENTRY(__memcpy_sse2_unaligned)
movq %rdi, %rax
+L(start):
testq %rdx, %rdx
je L(return)
cmpq $16, %rdx