158 lines
4.6 KiB
C
158 lines
4.6 KiB
C
/* $NetBSD: mcontext.h,v 1.6 2004/07/03 05:06:37 simonb Exp $ */
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/*-
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* Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Klaus Klein, and by Jason R. Thorpe of Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MIPS_MCONTEXT_H_
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#define _MIPS_MCONTEXT_H_
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/*
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* General register state
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*/
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#define _NGREG 37 /* R0-R31, MDLO, MDHI, CAUSE, PC, SR */
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#define _REG_R0 0
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#define _REG_AT 1
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#define _REG_V0 2
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#define _REG_V1 3
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#define _REG_A0 4
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#define _REG_A1 5
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#define _REG_A2 6
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#define _REG_A3 7
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#define _REG_T0 8
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#define _REG_T1 9
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#define _REG_T2 10
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#define _REG_T3 11
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#define _REG_T4 12
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#define _REG_T5 13
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#define _REG_T6 14
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#define _REG_T7 15
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#define _REG_S0 16
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#define _REG_S1 17
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#define _REG_S2 18
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#define _REG_S3 19
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#define _REG_S4 20
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#define _REG_S5 21
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#define _REG_S6 22
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#define _REG_S7 23
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#define _REG_T8 24
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#define _REG_T9 25
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#define _REG_K0 26
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#define _REG_K1 27
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#define _REG_GP 28
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#define _REG_SP 29
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#define _REG_S8 30
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#define _REG_RA 31
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/* XXX: The following conflict with <mips/regnum.h> */
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#define _REG_MDLO 32
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#define _REG_MDHI 33
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#define _REG_CAUSE 34
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#define _REG_EPC 35
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#define _REG_SR 36
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#ifndef __ASSEMBLER__
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/* Make sure this is signed; we need pointers to be sign-extended. */
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#if defined(__mips_n32)
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typedef long long __greg_t;
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#else
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typedef long __greg_t;
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#endif /* __mips_n32 */
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typedef __greg_t __gregset_t[_NGREG];
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/*
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* For the O32 ABI, there are 16 doubles, one at each even FP reg
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* number. The FP registers themselves are 32-bits.
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*
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* For 64-bit ABIs (include N32), each FP register is a 64-bit double.
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*/
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typedef __greg_t __freg_t;
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/*
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* Floating point register state
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*/
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#if defined(__mips_n32) || defined(_LP64)
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typedef struct {
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union {
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double __fp64_dregs[32];
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__freg_t __fp_regs[32];
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} __fp_r;
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unsigned int __fp_csr;
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unsigned int __fp_pad;
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} __fpregset_t;
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#else /* !(__mips_n32 || _LP64) */
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typedef struct {
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union {
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double __fp_dregs[16];
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float __fp_fregs[32];
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__freg_t __fp_regs[32];
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} __fp_r;
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unsigned int __fp_csr;
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unsigned int __fp_pad;
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} __fpregset_t;
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#endif /* !(__mips_n32 || _LP64) */
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typedef struct {
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__gregset_t __gregs;
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__fpregset_t __fpregs;
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} mcontext_t;
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#endif /* !__ASSEMBLER__ */
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#define _UC_MACHINE_PAD 16 /* Padding appended to ucontext_t */
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/*
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* Offsets relative to ucontext_t; intended to be used by assembly stubs.
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*/
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#if !defined(_MIPS_BSD_API) || _MIPS_BSD_API == _MIPS_BSD_API_LP32
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#define _OFFSETOF_UC_GREGS 40
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#else
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#define _OFFSETOF_UC_GREGS 56
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#endif
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#define _UC_SETSTACK 0x00010000
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#define _UC_CLRSTACK 0x00020000
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#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
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#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_EPC])
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#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_V0])
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#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
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#endif /* _MIPS_MCONTEXT_H_ */
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