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/* $NetBSD: mcontext.h,v 1.11 2021/05/24 21:00:12 thorpej Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Klaus Klein.
*
* 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 _ALPHA_MCONTEXT_H_
#define _ALPHA_MCONTEXT_H_
/*
* General register state (important: 0-31 maps to `struct reg')
*/
#define _NGREG 34 /* 0-31, PC, PS */
typedef unsigned long __greg_t;
typedef __greg_t __gregset_t[_NGREG];
/* Convenience synonyms */
#define _REG_V0 0
#define _REG_T0 1
#define _REG_T1 2
#define _REG_T2 3
#define _REG_T3 4
#define _REG_T4 5
#define _REG_T5 6
#define _REG_T6 7
#define _REG_T7 8
#define _REG_S0 9
#define _REG_S1 10
#define _REG_S2 11
#define _REG_S3 12
#define _REG_S4 13
#define _REG_S5 14
#define _REG_S6 15
#define _REG_A0 16
#define _REG_A1 17
#define _REG_A2 18
#define _REG_A3 19
#define _REG_A4 20
#define _REG_A5 21
#define _REG_T8 22
#define _REG_T9 23
#define _REG_T10 24
#define _REG_T11 25
#define _REG_RA 26
#define _REG_T12 27
#define _REG_PV 27
#define _REG_AT 28
#define _REG_GP 29
#define _REG_SP 30
#define _REG_UNIQUE 31
#define _REG_PC 32
#define _REG_PS 33
/*
* Floating point register state (important: maps to `struct fpreg')
*/
typedef struct {
union {
unsigned long __fp_regs[32];
double __fp_dregs[32];
} __fp_fr;
unsigned long __fp_fpcr;
} __fpregset_t;
typedef struct {
__gregset_t __gregs;
__fpregset_t __fpregs;
} mcontext_t;
/* Machine-dependent uc_flags */
#define _UC_TLSBASE 0x20 /* valid process-unique value in _REG_UNIQUE */
#define _UC_SETSTACK 0x00010000
#define _UC_CLRSTACK 0x00020000
#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
#define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_S6])
#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_V0])
#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
#if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || \
defined(__LIBPTHREAD_SOURCE__)
#include <sys/tls.h>
__BEGIN_DECLS
static __inline void *
__lwp_getprivate_fast(void)
{
register void *__tmp __asm("$0");
__asm volatile("call_pal %1 # PAL_rdunique"
: "=r" (__tmp)
: "i" (0x009e /* PAL_rdunique */));
return __tmp;
}
__END_DECLS
#endif
#endif /* !_ALPHA_MCONTEXT_H_ */
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