diff options
| author | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2020-07-10 19:41:06 -0300 |
|---|---|---|
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2020-07-10 19:41:06 -0300 |
| commit | 7c7bcf3634e44cf7e001aaa302138c1ee0e58f8c (patch) | |
| tree | efc90e1b49ce51b1ec962f034ca6ba872ad3c6c7 /sysdeps/powerpc/powerpc64/sysdep.h | |
| parent | 936c9666aed6747f7a76221118f7cf59100075e6 (diff) | |
| download | glibc-7c7bcf3634e44cf7e001aaa302138c1ee0e58f8c.zip glibc-7c7bcf3634e44cf7e001aaa302138c1ee0e58f8c.tar.gz glibc-7c7bcf3634e44cf7e001aaa302138c1ee0e58f8c.tar.bz2 | |
powerpc64: Fix calls when r2 is not used [BZ #26173]
Teach the linker that __mcount_internal, __sigjmp_save_symbol,
__syscall_error and __GI_exit do not use r2, so that it does not need to
recover r2 after the call.
Test at configure time if the assembler supports @notoc and define
USE_PPC64_NOTOC.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/sysdep.h')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/sysdep.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/powerpc/powerpc64/sysdep.h b/sysdeps/powerpc/powerpc64/sysdep.h index d6616ac..d557098 100644 --- a/sysdeps/powerpc/powerpc64/sysdep.h +++ b/sysdeps/powerpc/powerpc64/sysdep.h @@ -278,7 +278,7 @@ LT_LABELSUFFIX(name,_name_end): ; \ #ifdef SHARED #define TAIL_CALL_SYSCALL_ERROR \ - b JUMPTARGET(__syscall_error) + b JUMPTARGET (NOTOC (__syscall_error)) #else /* Static version might be linked into a large app with a toc exceeding 64k. We can't put a toc adjusting stub on a plain branch, so can't @@ -366,6 +366,12 @@ LT_LABELSUFFIX(name,_name_end): ; \ lwz rOUT,0(rOUT) #endif +#ifdef USE_PPC64_NOTOC +# define NOTOC(l) l@notoc +#else +# define NOTOC(l) l +#endif + #else /* !__ASSEMBLER__ */ #if _CALL_ELF != 2 |