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Diffstat (limited to 'libpthread/nptl/sysdeps/sparc')
-rw-r--r--libpthread/nptl/sysdeps/sparc/tcb-offsets.sym1
-rw-r--r--libpthread/nptl/sysdeps/sparc/tls.h52
2 files changed, 48 insertions, 5 deletions
diff --git a/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym b/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym
index 237f975b2..923af8a5b 100644
--- a/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym
@@ -2,5 +2,6 @@
#include <tls.h>
MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
+POINTER_GUARD offsetof (tcbhead_t, pointer_guard)
PID offsetof (struct pthread, pid)
TID offsetof (struct pthread, tid)
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 */