ucontext.h revision 202031
1/* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ralph Campbell. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)ucontext.h 8.1 (Berkeley) 6/10/93 33 * JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta 34 * $FreeBSD: head/sys/mips/include/ucontext.h 202031 2010-01-10 19:50:24Z imp $ 35 */ 36 37#ifndef _MACHINE_UCONTEXT_H_ 38#define _MACHINE_UCONTEXT_H_ 39 40#ifndef _LOCORE 41 42typedef struct __mcontext { 43 /* 44 * These fields must match the corresponding fields in struct 45 * sigcontext which follow 'sc_mask'. That way we can support 46 * struct sigcontext and ucontext_t at the same time. 47 */ 48 int mc_onstack; /* sigstack state to restore */ 49 register_t mc_pc; /* pc at time of signal */ 50 register_t mc_regs[32]; /* processor regs 0 to 31 */ 51 register_t sr; /* status register */ 52 register_t mullo, mulhi; /* mullo and mulhi registers... */ 53 int mc_fpused; /* fp has been used */ 54 f_register_t mc_fpregs[33]; /* fp regs 0 to 31 and csr */ 55 register_t mc_fpc_eir; /* fp exception instruction reg */ 56 void *mc_tls; /* pointer to TLS area */ 57 int __spare__[8]; /* XXX reserved */ 58} mcontext_t; 59#endif 60 61#if defined(__mips_n64) || defined(__mips_n32) 62#define SZREG 8 63#else 64#define SZREG 4 65#endif 66 67/* offsets into mcontext_t */ 68#define UCTX_REG(x) (4 + SZREG + (x)*SZREG) 69 70#define UCR_ZERO UCTX_REG(0) 71#define UCR_AT UCTX_REG(1) 72#define UCR_V0 UCTX_REG(2) 73#define UCR_V1 UCTX_REG(3) 74#define UCR_A0 UCTX_REG(4) 75#define UCR_A1 UCTX_REG(5) 76#define UCR_A2 UCTX_REG(6) 77#define UCR_A3 UCTX_REG(7) 78#define UCR_T0 UCTX_REG(8) 79#define UCR_T1 UCTX_REG(9) 80#define UCR_T2 UCTX_REG(10) 81#define UCR_T3 UCTX_REG(11) 82#define UCR_T4 UCTX_REG(12) 83#define UCR_T5 UCTX_REG(13) 84#define UCR_T6 UCTX_REG(14) 85#define UCR_T7 UCTX_REG(15) 86#define UCR_S0 UCTX_REG(16) 87#define UCR_S1 UCTX_REG(17) 88#define UCR_S2 UCTX_REG(18) 89#define UCR_S3 UCTX_REG(19) 90#define UCR_S4 UCTX_REG(20) 91#define UCR_S5 UCTX_REG(21) 92#define UCR_S6 UCTX_REG(22) 93#define UCR_S7 UCTX_REG(23) 94#define UCR_T8 UCTX_REG(24) 95#define UCR_T9 UCTX_REG(25) 96#define UCR_K0 UCTX_REG(26) 97#define UCR_K1 UCTX_REG(27) 98#define UCR_GP UCTX_REG(28) 99#define UCR_SP UCTX_REG(29) 100#define UCR_S8 UCTX_REG(30) 101#define UCR_RA UCTX_REG(31) 102#define UCR_SR UCTX_REG(32) 103#define UCR_MDLO UCTX_REG(33) 104#define UCR_MDHI UCTX_REG(34) 105 106#endif /* !_MACHINE_UCONTEXT_H_ */ 107