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1 /* Machine-dependent pthreads configuration and inline functions.
3 Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Richard Henderson <rth@tamu.edu>.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
17 You should have received a copy of the GNU Library General Public
18 License along with the GNU C Library; see the file COPYING.LIB. If not,
19 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
23 # define PT_EI extern inline
26 /* Spinlock implementation; required. */
28 testandset (int *spinlock
)
32 __asm__
__volatile__("ldstub %1,%0"
33 : "=r"(ret
), "=m"(*spinlock
)
40 /* Spinlock release; default is just set to zero. */
41 #define RELEASE(spinlock) \
42 __asm__ __volatile__("stbar; stb %1,%0" : "=m"(*(spinlock)) : "r"(0));
45 /* Get some notion of the current stack. Need not be exactly the top
46 of the stack, just something somewhere in the current frame. */
47 #define CURRENT_STACK_FRAME stack_pointer
48 register char * stack_pointer
__asm__("%sp");
51 /* Registers %g6 and %g7 are reserved by the ABI for "system use". It
52 happens that Solaris uses %g6 for the thread pointer -- we do the same. */
53 struct _pthread_descr_struct
;
54 register struct _pthread_descr_struct
*__thread_self
__asm__("%g6");
56 /* Return the thread descriptor for the current thread. */
57 #define THREAD_SELF __thread_self
59 /* Initialize the thread-unique value. */
60 #define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr))
62 /* Access to data in the thread descriptor is easy. */
63 #define THREAD_GETMEM(descr, member) __thread_self->member
64 #define THREAD_GETMEM_NC(descr, member) __thread_self->member
65 #define THREAD_SETMEM(descr, member, value) __thread_self->member = (value)
66 #define THREAD_SETMEM_NC(descr, member, value) __thread_self->member = (value)
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