diff options
Diffstat (limited to 'nptl/sysdeps/ia64/tls.h')
| -rw-r--r-- | nptl/sysdeps/ia64/tls.h | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/nptl/sysdeps/ia64/tls.h b/nptl/sysdeps/ia64/tls.h index e3ad0681d6..eb773aa97d 100644 --- a/nptl/sysdeps/ia64/tls.h +++ b/nptl/sysdeps/ia64/tls.h @@ -81,13 +81,14 @@ register struct pthread *__thread_self __asm__("r13"); # define TLS_TCB_SIZE sizeof (tcbhead_t) /* 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. */ + If there is not any room for uintptr_t stack_guard and + uintptr_t pointer_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)) \ + (sizeof (struct pthread) \ + + (PTHREAD_STRUCT_END_PADDING < 2 * sizeof (uintptr_t) \ + ? ((2 * sizeof (uintptr_t) + __alignof__ (struct pthread) - 1) \ + & ~(__alignof__ (struct pthread) - 1)) \ : 0)) /* Alignment requirements for the TCB. */ @@ -156,6 +157,15 @@ register struct pthread *__thread_self __asm__("r13"); (((uintptr_t *) ((char *) (descr) + TLS_PRE_TCB_SIZE))[-1] \ = ((uintptr_t *) __thread_self)[-1]) +/* Set the pointer guard field in TCB head. */ +#define THREAD_GET_POINTER_GUARD() \ + (((uintptr_t *) __thread_self)[-2]) +#define THREAD_SET_POINTER_GUARD(value) \ + (((uintptr_t *) __thread_self)[-2] = (value)) +#define THREAD_COPY_POINTER_GUARD(descr) \ + (((uintptr_t *) ((char *) (descr) + TLS_PRE_TCB_SIZE))[-2] \ + = THREAD_GET_POINTER_GUARD ()) + #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |