xref: /src/lib/libpthread/arch/sparc64/pthread_md.h

/*	$NetBSD: pthread_md.h,v 1.5 2008/04/28 20:23:02 martin Exp $	*/

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _LIB_PTHREAD_SPARC64_MD_H
#define _LIB_PTHREAD_SPARC64_MD_H

/*
 * pthread__sp used for identifying thread
 */
static inline long
pthread__sp(void)
{
	long ret;

	__asm("mov %%sp, %0" : "=r" (ret));

	return ret;
}

#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_O6])
#define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC])

#define STACKSPACE 176	/* min stack frame XXX */

/*
 * Conversions between struct reg and struct mcontext. Used by
 * libpthread_dbg.
 * XXX macros
 */

#define PTHREAD_UCONTEXT_TO_REG(reg, uc) do {				\
	memcpy(&(reg)->r_tstate, &(uc)->uc_mcontext.__gregs, 		\
	    _REG_Y * sizeof(__greg_t));					\
	(reg)->r_y = (uc)->uc_mcontext.__gregs[_REG_Y];			\
	memcpy(&(reg)->r_global[1], &(uc)->uc_mcontext.__gregs[_REG_G1],\
	    (_REG_O7 - _REG_G1 + 1) * sizeof(__greg_t));		\
	(reg)->r_global[0] = 0; 					\
	} while (/*CONSTCOND*/0)

#define PTHREAD_REG_TO_UCONTEXT(uc, reg) do {				\
	memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_tstate,		\
	    _REG_Y * sizeof(__greg_t));					\
	(uc)->uc_mcontext.__gregs[_REG_Y] = (reg)->r_y;			\
	memcpy(&(uc)->uc_mcontext.__gregs[_REG_G1], &(reg)->r_global[1],\
	    (_REG_O7 - _REG_G1 + 1) * sizeof(__greg_t));		\
	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
	} while (/*CONSTCOND*/0)

#define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) do {			\
	memcpy((freg)->fr_regs,						\
	    &(uc)->uc_mcontext.__fpregs.__fpu_fr.__fpu_dregs,		\
	    32*sizeof(double));						\
	(freg)->fr_fsr = (uc)->uc_mcontext.__fpregs.__fpu_fsr;		\
	} while (/*CONSTCOND*/0)

#define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do {       	       		\
	memcpy(&(uc)->uc_mcontext.__fpregs.__fpu_fr.__fpu_dregs,	\
	    (freg)->fr_regs,						\
	    32*sizeof(double));						\
	(uc)->uc_mcontext.__fpregs.__fpu_fsr = (freg)->fr_fsr;		\
	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
	} while (/*CONSTCOND*/0)

#ifdef __PTHREAD_SIGNAL_PRIVATE
#include <machine/psl.h>
#endif

#endif /* _LIB_PTHREAD_SPARC64_MD_H */