pthread_md.h revision 1.3 
1/*	$NetBSD: pthread_md.h,v 1.3 2003/11/10 07:52:52 martin Exp $	*/
2
3/*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *        This product includes software developed by the NetBSD
18 *        Foundation, Inc. and its contributors.
19 * 4. Neither the name of The NetBSD Foundation nor the names of its
20 *    contributors may be used to endorse or promote products derived
21 *    from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#ifndef _LIB_PTHREAD_SPARC_MD_H
37#define _LIB_PTHREAD_SPARC_MD_H
38
39/*
40 * pthread__sp used for identifying thread
41 */
42static __inline long
43pthread__sp(void)
44{
45	long ret;
46
47	__asm("mov %%sp, %0" : "=r" (ret));
48
49	return ret;
50}
51
52#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_O6])
53#define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC])
54
55#define STACKSPACE 96	/* min stack frame XXX */
56
57/*
58 * Conversions between struct reg and struct mcontext. Used by
59 * libpthread_dbg.
60 * XXX macros
61 */
62
63#define PTHREAD_UCONTEXT_TO_REG(reg, uc) do {				\
64	memcpy((reg), &(uc)->uc_mcontext.__gregs, 			\
65	    (_REG_Y+1)*sizeof(__greg_t));				\
66	(reg)->r_global[0] = 0;						\
67	memcpy(&(reg)->r_global[1], &(uc)->uc_mcontext.__gregs[_REG_G1],\
68	     (_REG_O7-_REG_G1+1)*sizeof(__greg_t));			\
69	} while (/*CONSTCOND*/0)
70
71#define PTHREAD_REG_TO_UCONTEXT(uc, reg) do {				\
72	memcpy(&(uc)->uc_mcontext.__gregs, (reg), 			\
73	    (_REG_Y+1)*sizeof(__greg_t)); 				\
74	(uc)->uc_mcontext.__gregs[_REG_Y] = (reg)->r_y;			\
75	memcpy(&(uc)->uc_mcontext.__gregs[_REG_G1], &(reg)->r_global[1],\
76	    (_REG_O7-_REG_G1+1)*sizeof(__greg_t));			\
77	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
78	} while (/*CONSTCOND*/0)
79
80#define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) do {			\
81	memcpy((freg)->fr_regs,						\
82	    &(uc)->uc_mcontext.__fpregs.__fpu_fr.__fpu_regs,		\
83	    32*sizeof(u_int));						\
84	(freg)->fr_fsr = (uc)->uc_mcontext.__fpregs.__fpu_fsr;		\
85	} while (/*CONSTCOND*/0)
86
87#define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do {       	       		\
88	memcpy(&(uc)->uc_mcontext.__fpregs.__fpu_fr.__fpu_regs,		\
89	    (freg)->fr_regs,						\
90	    32*sizeof(u_int));						\
91	(uc)->uc_mcontext.__fpregs.__fpu_fsr = (freg)->fr_fsr;		\
92	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
93	} while (/*CONSTCOND*/0)
94
95#endif /* _LIB_PTHREAD_SPARC_MD_H */
96