ucontext.h revision 105950
151652Schris/*- 251652Schris * Copyright (c) 1999 Marcel Moolenaar 379727Sschweikh * All rights reserved. 451652Schris * 551652Schris * Redistribution and use in source and binary forms, with or without 651652Schris * modification, are permitted provided that the following conditions 751652Schris * are met: 851652Schris * 1. Redistributions of source code must retain the above copyright 951652Schris * notice, this list of conditions and the following disclaimer 1051652Schris * in this position and unchanged. 1151652Schris * 2. Redistributions in binary form must reproduce the above copyright 1279727Sschweikh * notice, this list of conditions and the following disclaimer in the 1351652Schris * documentation and/or other materials provided with the distribution. 1451652Schris * 3. The name of the author may not be used to endorse or promote products 1551652Schris * derived from this software without specific prior written permission. 1651652Schris * 1751652Schris * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1851652Schris * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1951652Schris * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2051652Schris * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2151652Schris * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2251652Schris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2351652Schris * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2479727Sschweikh * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2551652Schris * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2679727Sschweikh * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27231376Sed * 28206622Suqs * $FreeBSD: head/sys/i386/include/ucontext.h 105950 2002-10-25 19:10:58Z peter $ 2951652Schris */ 3051652Schris 3151652Schris#ifndef _MACHINE_UCONTEXT_H_ 32230330Sed#define _MACHINE_UCONTEXT_H_ 3351652Schris 3484306Srutypedef struct __mcontext { 3584306Sru /* 3651652Schris * The first 20 fields must match the definition of 37230330Sed * sigcontext. So that we can support sigcontext 3851652Schris * and ucontext_t at the same time. 3951652Schris */ 4051652Schris int mc_onstack; /* XXX - sigcontext compat. */ 41121380Shmp int mc_gs; 42121380Shmp int mc_fs; 4351652Schris int mc_es; 4451652Schris int mc_ds; 4551652Schris int mc_edi; 4651652Schris int mc_esi; 4751652Schris int mc_ebp; 4851652Schris int mc_isp; 49 int mc_ebx; 50 int mc_edx; 51 int mc_ecx; 52 int mc_eax; 53 int mc_trapno; 54 int mc_err; 55 int mc_eip; 56 int mc_cs; 57 int mc_eflags; 58 int mc_esp; /* machine state */ 59 int mc_ss; 60 61 int mc_len; /* sizeof(mcontext_t) */ 62#define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */ 63#define _MC_FPFMT_387 0x10001 64#define _MC_FPFMT_XMM 0x10002 65 int mc_fpformat; 66#define _MC_FPOWNED_NONE 0x20000 /* FP state not used */ 67#define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */ 68#define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */ 69 int mc_ownedfp; 70 int mc_spare1[1]; /* align next field to 16 bytes */ 71 int mc_fpstate[128]; /* must be multiple of 16 bytes */ 72 int mc_spare2[8]; 73} mcontext_t; 74 75#ifdef _KERNEL 76#ifdef COMPAT_FREEBSD4 77/* For 4.x binaries */ 78struct mcontext4 { 79 int mc_onstack; /* XXX - sigcontext compat. */ 80 int mc_gs; 81 int mc_fs; 82 int mc_es; 83 int mc_ds; 84 int mc_edi; 85 int mc_esi; 86 int mc_ebp; 87 int mc_isp; 88 int mc_ebx; 89 int mc_edx; 90 int mc_ecx; 91 int mc_eax; 92 int mc_trapno; 93 int mc_err; 94 int mc_eip; 95 int mc_cs; 96 int mc_eflags; 97 int mc_esp; /* machine state */ 98 int mc_ss; 99 int mc_fpregs[28]; /* env87 + fpacc87 + u_long */ 100 int __spare__[17]; 101}; 102#endif 103 104struct thread; 105 106void get_mcontext(struct thread *td, mcontext_t *mcp); 107int set_mcontext(struct thread *td, const mcontext_t *mcp); 108#endif 109 110#endif /* !_MACHINE_UCONTEXT_H_ */ 111