| Message ID | 20210512092720.901129-1-naohirot@fujitsu.com |
|---|---|
| State | New |
| Headers | show |
| Series | aarch64: Added optimized memcpy/memmove/memset for A64FX | expand |
The 05/12/2021 09:27, Naohiro Tamura wrote: > From: Naohiro Tamura <naohirot@jp.fujitsu.com> > > This patch defines BTI_C and BTI_J macros conditionally for > performance. > If HAVE_AARCH64_BTI is true, BTI_C and BTI_J are defined as HINT > instruction for ARMv8.5 BTI (Branch Target Identification). > If HAVE_AARCH64_BTI is false, both BTI_C and BTI_J are defined as > NOP. thanks. this is ok for master. i will commit it. > --- > sysdeps/aarch64/sysdep.h | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h > index 90acca4e42..b936e29cbd 100644 > --- a/sysdeps/aarch64/sysdep.h > +++ b/sysdeps/aarch64/sysdep.h > @@ -62,8 +62,13 @@ strip_pac (void *p) > #define ASM_SIZE_DIRECTIVE(name) .size name,.-name > > /* Branch Target Identitication support. */ > -#define BTI_C hint 34 > -#define BTI_J hint 36 > +#if HAVE_AARCH64_BTI > +# define BTI_C hint 34 > +# define BTI_J hint 36 > +#else > +# define BTI_C nop > +# define BTI_J nop > +#endif > > /* Return address signing support (pac-ret). */ > #define PACIASP hint 25 > -- > 2.17.1 >
diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h index 90acca4e42..b936e29cbd 100644 --- a/sysdeps/aarch64/sysdep.h +++ b/sysdeps/aarch64/sysdep.h @@ -62,8 +62,13 @@ strip_pac (void *p) #define ASM_SIZE_DIRECTIVE(name) .size name,.-name /* Branch Target Identitication support. */ -#define BTI_C hint 34 -#define BTI_J hint 36 +#if HAVE_AARCH64_BTI +# define BTI_C hint 34 +# define BTI_J hint 36 +#else +# define BTI_C nop +# define BTI_J nop +#endif /* Return address signing support (pac-ret). */ #define PACIASP hint 25
From: Naohiro Tamura <naohirot@jp.fujitsu.com> This patch defines BTI_C and BTI_J macros conditionally for performance. If HAVE_AARCH64_BTI is true, BTI_C and BTI_J are defined as HINT instruction for ARMv8.5 BTI (Branch Target Identification). If HAVE_AARCH64_BTI is false, both BTI_C and BTI_J are defined as NOP. --- sysdeps/aarch64/sysdep.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)