diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/sh/tls.h')
| -rw-r--r-- | libpthread/nptl/sysdeps/sh/tls.h | 54 |
1 files changed, 47 insertions, 7 deletions
diff --git a/libpthread/nptl/sysdeps/sh/tls.h b/libpthread/nptl/sysdeps/sh/tls.h index 5e5ce12b0..2c538eded 100644 --- a/libpthread/nptl/sysdeps/sh/tls.h +++ b/libpthread/nptl/sysdeps/sh/tls.h @@ -1,5 +1,5 @@ /* Definition for thread-local data handling. NPTL/SH version. - Copyright (C) 2003, 2005 Free Software Foundation, Inc. + Copyright (C) 2003, 2005, 2006, 2007 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 @@ -24,6 +24,10 @@ # include <stdbool.h> # include <stddef.h> # include <stdint.h> +# include <stdlib.h> +# include <list.h> +# include <sysdep.h> +# include <bits/kernel-features.h> /* Type for the dtv. */ typedef union dtv @@ -39,7 +43,7 @@ typedef union dtv typedef struct { dtv_t *dtv; - void *private; + uintptr_t pointer_guard; } tcbhead_t; # define TLS_MULTIPLE_THREADS_IN_TCB 1 @@ -52,9 +56,9 @@ typedef struct /* We require TLS support in the tools. */ #define HAVE_TLS_SUPPORT #define HAVE___THREAD 1 -#define HAVE_TLS_MODEL_ATTRIBUTE 1 +#define HAVE_TLS_MODEL_ATTRIBUTE 1 /* Signal that TLS support is available. */ -# define USE_TLS 1 +# define USE_TLS 1 #ifndef __ASSEMBLER__ @@ -115,9 +119,9 @@ typedef struct struct pthread *self = thread_self(); do not get optimized away. */ # define THREAD_SELF \ - ({ struct pthread *__thread_self; \ - __asm ("stc gbr,%0" : "=r" (__thread_self)); \ - __thread_self - 1;}) + ({ struct pthread *__self; \ + __asm ("stc gbr,%0" : "=r" (__self)); \ + __self - 1;}) /* Magic for libthread_db to know how to do THREAD_SELF. */ # define DB_THREAD_SELF \ @@ -137,6 +141,42 @@ typedef struct # define THREAD_SETMEM_NC(descr, member, idx, value) \ descr->member[idx] = (value) +#define THREAD_GET_POINTER_GUARD() \ + ({ tcbhead_t *__tcbp; \ + __asm __volatile ("stc gbr,%0" : "=r" (__tcbp)); \ + __tcbp->pointer_guard;}) + #define THREAD_SET_POINTER_GUARD(value) \ + ({ tcbhead_t *__tcbp; \ + __asm __volatile ("stc gbr,%0" : "=r" (__tcbp)); \ + __tcbp->pointer_guard = (value);}) +#define THREAD_COPY_POINTER_GUARD(descr) \ + ({ tcbhead_t *__tcbp; \ + __asm __volatile ("stc gbr,%0" : "=r" (__tcbp)); \ + ((tcbhead_t *) (descr + 1))->pointer_guard = __tcbp->pointer_guard;}) + +/* Get and set the global scope generation counter in struct pthread. */ +#define THREAD_GSCOPE_FLAG_UNUSED 0 +#define THREAD_GSCOPE_FLAG_USED 1 +#define THREAD_GSCOPE_FLAG_WAIT 2 +#define THREAD_GSCOPE_RESET_FLAG() \ + do \ + { int __res \ + = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \ + THREAD_GSCOPE_FLAG_UNUSED); \ + if (__res == THREAD_GSCOPE_FLAG_WAIT) \ + lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \ + } \ + while (0) +#define THREAD_GSCOPE_SET_FLAG() \ + do \ + { \ + THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \ + atomic_write_barrier (); \ + } \ + while (0) +#define THREAD_GSCOPE_WAIT() \ + GL(dl_wait_lookup_done) () + #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |