diff options
Diffstat (limited to 'sysdeps/x86_64/nptl/tls.h')
| -rw-r--r-- | sysdeps/x86_64/nptl/tls.h | 44 |
1 files changed, 5 insertions, 39 deletions
diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h index d7543c651f..2b061a07c6 100644 --- a/sysdeps/x86_64/nptl/tls.h +++ b/sysdeps/x86_64/nptl/tls.h @@ -1,5 +1,5 @@ /* Definition for thread-local data handling. nptl/x86_64 version. - Copyright (C) 2002-2015 Free Software Foundation, Inc. + Copyright (C) 2002-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -67,14 +67,15 @@ typedef struct # else int __glibc_reserved1; # endif - int rtld_must_xmm_save; + int __glibc_unused1; /* Reservation of some values for the TM ABI. */ void *__private_tm[4]; /* GCC split stack support. */ void *__private_ss; long int __glibc_reserved2; - /* Have space for the post-AVX register size. */ - __128bits rtld_savespace_sse[8][4] __attribute__ ((aligned (32))); + /* Must be kept even if it is no longer used by glibc since programs, + like AddressSanitizer, depend on the size of tcbhead_t. */ + __128bits __glibc_unused2[8][4] __attribute__ ((aligned (32))); void *__padding[8]; } tcbhead_t; @@ -384,41 +385,6 @@ typedef struct # define THREAD_GSCOPE_WAIT() \ GL(dl_wait_lookup_done) () - -# ifdef SHARED -/* Defined in dl-trampoline.S. */ -extern void _dl_x86_64_save_sse (void); -extern void _dl_x86_64_restore_sse (void); - -# define RTLD_CHECK_FOREIGN_CALL \ - (THREAD_GETMEM (THREAD_SELF, header.rtld_must_xmm_save) != 0) - -/* NB: Don't use the xchg operation because that would imply a lock - prefix which is expensive and unnecessary. The cache line is also - not contested at all. */ -# define RTLD_ENABLE_FOREIGN_CALL \ - int old_rtld_must_xmm_save = THREAD_GETMEM (THREAD_SELF, \ - header.rtld_must_xmm_save); \ - THREAD_SETMEM (THREAD_SELF, header.rtld_must_xmm_save, 1) - -# define RTLD_PREPARE_FOREIGN_CALL \ - do if (THREAD_GETMEM (THREAD_SELF, header.rtld_must_xmm_save)) \ - { \ - _dl_x86_64_save_sse (); \ - THREAD_SETMEM (THREAD_SELF, header.rtld_must_xmm_save, 0); \ - } \ - while (0) - -# define RTLD_FINALIZE_FOREIGN_CALL \ - do { \ - if (THREAD_GETMEM (THREAD_SELF, header.rtld_must_xmm_save) == 0) \ - _dl_x86_64_restore_sse (); \ - THREAD_SETMEM (THREAD_SELF, header.rtld_must_xmm_save, \ - old_rtld_must_xmm_save); \ - } while (0) -# endif - - #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |