diff options
Diffstat (limited to 'nptl/sysdeps/ia64/tls.h')
| -rw-r--r-- | nptl/sysdeps/ia64/tls.h | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/nptl/sysdeps/ia64/tls.h b/nptl/sysdeps/ia64/tls.h index a435f966ca..e3ad0681d6 100644 --- a/nptl/sysdeps/ia64/tls.h +++ b/nptl/sysdeps/ia64/tls.h @@ -80,8 +80,15 @@ register struct pthread *__thread_self __asm__("r13"); /* This is the size of the TCB. */ # define TLS_TCB_SIZE sizeof (tcbhead_t) -/* This is the size we need before TCB. */ -# define TLS_PRE_TCB_SIZE sizeof (struct pthread) +/* This is the size we need before TCB. + If there is not any room for uintptr_t stack_guard in struct pthread's + final padding, we need to put struct pthread 16 byte slower. */ +# define TLS_PRE_TCB_SIZE \ + (sizeof (struct pthread) \ + + (PTHREAD_STRUCT_END_PADDING < sizeof (uintptr_t) \ + ? ((sizeof (uintptr_t) + __alignof__ (struct pthread) - 1)\ + & ~(__alignof__ (struct pthread) - 1)) \ + : 0)) /* Alignment requirements for the TCB. */ # define TLS_TCB_ALIGN __alignof__ (struct pthread) @@ -106,7 +113,8 @@ register struct pthread *__thread_self __asm__("r13"); (((tcbhead_t *) (descr))->dtv) #define THREAD_SELF_SYSINFO (((tcbhead_t *) __thread_self)->private) -#define THREAD_SYSINFO(pd) (((tcbhead_t *) ((pd) + 1))->private) +#define THREAD_SYSINFO(pd) \ + (((tcbhead_t *) ((char *) (pd) + TLS_PRE_TCB_SIZE))->private) #if defined NEED_DL_SYSINFO # define INIT_SYSINFO THREAD_SELF_SYSINFO = (void *) GLRO(dl_sysinfo) @@ -125,10 +133,11 @@ register struct pthread *__thread_self __asm__("r13"); (((tcbhead_t *)__thread_self)->dtv) /* Return the thread descriptor for the current thread. */ -# define THREAD_SELF (__thread_self - 1) +# define THREAD_SELF \ + ((struct pthread *) ((char *) __thread_self - TLS_PRE_TCB_SIZE)) /* Magic for libthread_db to know how to do THREAD_SELF. */ -# define DB_THREAD_SELF REGISTER (64, 64, 13 * 8, -sizeof (struct pthread)) +# define DB_THREAD_SELF REGISTER (64, 64, 13 * 8, -TLS_PRE_TCB_SIZE) /* Access to data in the thread descriptor is easy. */ #define THREAD_GETMEM(descr, member) \ @@ -140,6 +149,13 @@ register struct pthread *__thread_self __asm__("r13"); #define THREAD_SETMEM_NC(descr, member, idx, value) \ descr->member[idx] = (value) +/* Set the stack guard field in TCB head. */ +#define THREAD_SET_STACK_GUARD(value) \ + (((uintptr_t *) __thread_self)[-1] = (value)) +#define THREAD_COPY_STACK_GUARD(descr) \ + (((uintptr_t *) ((char *) (descr) + TLS_PRE_TCB_SIZE))[-1] \ + = ((uintptr_t *) __thread_self)[-1]) + #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |