diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/sparc/tls.h')
| -rw-r--r-- | libpthread/nptl/sysdeps/sparc/tls.h | 52 |
1 files changed, 47 insertions, 5 deletions
diff --git a/libpthread/nptl/sysdeps/sparc/tls.h b/libpthread/nptl/sysdeps/sparc/tls.h index e5d27fb57..e93542c9f 100644 --- a/libpthread/nptl/sysdeps/sparc/tls.h +++ b/libpthread/nptl/sysdeps/sparc/tls.h @@ -1,5 +1,5 @@ /* Definitions for thread-local data handling. NPTL/sparc 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 @@ -26,6 +26,7 @@ # include <stdint.h> # include <stdlib.h> # include <list.h> +# include <bits/kernel-features.h> /* Type for the dtv. */ typedef union dtv @@ -45,8 +46,18 @@ typedef struct dtv_t *dtv; void *self; int multiple_threads; +#if __WORDSIZE == 64 + int gscope_flag; +#endif uintptr_t sysinfo; uintptr_t stack_guard; + uintptr_t pointer_guard; +#if __WORDSIZE != 64 + int gscope_flag; +#endif +#ifndef __ASSUME_PRIVATE_FUTEX + int private_futex; +#endif } tcbhead_t; #else /* __ASSEMBLER__ */ @@ -59,12 +70,15 @@ typedef struct #define HAVE_TLS_MODEL_ATTRIBUTE 1 /* Signal that TLS support is available. */ -#define USE_TLS 1 +#define USE_TLS 1 #ifndef __ASSEMBLER__ /* Get system call information. */ # include <sysdep.h> +/* Get the thread descriptor definition. */ +# include <descr.h> + register struct pthread *__thread_self __asm__("%g7"); /* This is the size of the initial TCB. Can't be just sizeof (tcbhead_t), @@ -81,9 +95,6 @@ register struct pthread *__thread_self __asm__("%g7"); /* Alignment requirements for the TCB. */ # define TLS_TCB_ALIGN __alignof__ (struct pthread) -/* Get the thread descriptor definition. */ -# include <descr.h> - /* The TCB can have any size and the memory following the address the thread pointer points to is unspecified. Allocate the TCB there. */ # define TLS_TCB_AT_TP 1 @@ -134,6 +145,37 @@ register struct pthread *__thread_self __asm__("%g7"); ((descr)->header.stack_guard \ = THREAD_GETMEM (THREAD_SELF, header.stack_guard)) +/* Get/set the stack guard field in TCB head. */ +#define THREAD_GET_POINTER_GUARD() \ + THREAD_GETMEM (THREAD_SELF, header.pointer_guard) +#define THREAD_SET_POINTER_GUARD(value) \ + THREAD_SETMEM (THREAD_SELF, header.pointer_guard, value) +# define THREAD_COPY_POINTER_GUARD(descr) \ + ((descr)->header.pointer_guard = THREAD_GET_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 */ |