1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)ucontext.h 8.1 (Berkeley) 6/10/93 35 * JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta 36 * $FreeBSD$ 37 */ 38 39 #ifndef _MACHINE_UCONTEXT_H_ 40 #define _MACHINE_UCONTEXT_H_ 41 42 #ifndef _LOCORE 43 44 #if defined(_KERNEL) && !defined(KLD_MODULE) && !defined(_STANDALONE) 45 #include "opt_compat.h" 46 #endif 47 48 typedef struct __mcontext { 49 /* 50 * These fields must match the corresponding fields in struct 51 * sigcontext which follow 'sc_mask'. That way we can support 52 * struct sigcontext and ucontext_t at the same time. 53 */ 54 int mc_onstack; /* sigstack state to restore */ 55 __register_t mc_pc; /* pc at time of signal */ 56 __register_t mc_regs[32]; /* processor regs 0 to 31 */ 57 __register_t sr; /* status register */ 58 __register_t mullo, mulhi; /* mullo and mulhi registers... */ 59 int mc_fpused; /* fp has been used */ 60 f_register_t mc_fpregs[33]; /* fp regs 0 to 31 and csr */ 61 __register_t mc_fpc_eir; /* fp exception instruction reg */ 62 void *mc_tls; /* pointer to TLS area */ 63 int __spare__[8]; /* XXX reserved */ 64 } mcontext_t; 65 66 #if (defined(__mips_n32) || defined(__mips_n64)) && defined(COMPAT_FREEBSD32) 67 #include <compat/freebsd32/freebsd32_signal.h> 68 69 typedef struct __mcontext32 { 70 int mc_onstack; 71 int32_t mc_pc; 72 int32_t mc_regs[32]; 73 int32_t sr; 74 int32_t mullo, mulhi; 75 int mc_fpused; 76 int32_t mc_fpregs[33]; 77 int32_t mc_fpc_eir; 78 int32_t mc_tls; 79 int __spare__[8]; 80 } mcontext32_t; 81 82 typedef struct __ucontext32 { 83 sigset_t uc_sigmask; 84 mcontext32_t uc_mcontext; 85 uint32_t uc_link; 86 struct sigaltstack32 uc_stack; 87 uint32_t uc_flags; 88 uint32_t __spare__[4]; 89 } ucontext32_t; 90 #endif 91 #endif 92 93 #ifndef SZREG 94 #if defined(__mips_o32) 95 #define SZREG 4 96 #else 97 #define SZREG 8 98 #endif 99 #endif 100 101 /* offsets into mcontext_t */ 102 #define UCTX_REG(x) (4 + SZREG + (x)*SZREG) 103 104 #define UCR_ZERO UCTX_REG(0) 105 #define UCR_AT UCTX_REG(1) 106 #define UCR_V0 UCTX_REG(2) 107 #define UCR_V1 UCTX_REG(3) 108 #define UCR_A0 UCTX_REG(4) 109 #define UCR_A1 UCTX_REG(5) 110 #define UCR_A2 UCTX_REG(6) 111 #define UCR_A3 UCTX_REG(7) 112 #define UCR_T0 UCTX_REG(8) 113 #define UCR_T1 UCTX_REG(9) 114 #define UCR_T2 UCTX_REG(10) 115 #define UCR_T3 UCTX_REG(11) 116 #define UCR_T4 UCTX_REG(12) 117 #define UCR_T5 UCTX_REG(13) 118 #define UCR_T6 UCTX_REG(14) 119 #define UCR_T7 UCTX_REG(15) 120 #define UCR_S0 UCTX_REG(16) 121 #define UCR_S1 UCTX_REG(17) 122 #define UCR_S2 UCTX_REG(18) 123 #define UCR_S3 UCTX_REG(19) 124 #define UCR_S4 UCTX_REG(20) 125 #define UCR_S5 UCTX_REG(21) 126 #define UCR_S6 UCTX_REG(22) 127 #define UCR_S7 UCTX_REG(23) 128 #define UCR_T8 UCTX_REG(24) 129 #define UCR_T9 UCTX_REG(25) 130 #define UCR_K0 UCTX_REG(26) 131 #define UCR_K1 UCTX_REG(27) 132 #define UCR_GP UCTX_REG(28) 133 #define UCR_SP UCTX_REG(29) 134 #define UCR_S8 UCTX_REG(30) 135 #define UCR_RA UCTX_REG(31) 136 #define UCR_SR UCTX_REG(32) 137 #define UCR_MDLO UCTX_REG(33) 138 #define UCR_MDHI UCTX_REG(34) 139 140 #endif /* !_MACHINE_UCONTEXT_H_ */ 141