1 /*- 2 * Copyright (c) 1999 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _MACHINE_UCONTEXT_H_ 32 #define _MACHINE_UCONTEXT_H_ 33 34 typedef struct __mcontext { 35 /* 36 * The definition of mcontext_t must match the layout of 37 * struct sigcontext after the sc_mask member. This is so 38 * that we can support sigcontext and ucontext_t at the same 39 * time. 40 */ 41 __register_t mc_onstack; /* XXX - sigcontext compat. */ 42 __register_t mc_gs; /* machine state (struct trapframe) */ 43 __register_t mc_fs; 44 __register_t mc_es; 45 __register_t mc_ds; 46 __register_t mc_edi; 47 __register_t mc_esi; 48 __register_t mc_ebp; 49 __register_t mc_isp; 50 __register_t mc_ebx; 51 __register_t mc_edx; 52 __register_t mc_ecx; 53 __register_t mc_eax; 54 __register_t mc_trapno; 55 __register_t mc_err; 56 __register_t mc_eip; 57 __register_t mc_cs; 58 __register_t mc_eflags; 59 __register_t mc_esp; 60 __register_t mc_ss; 61 62 int mc_len; /* sizeof(mcontext_t) */ 63 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */ 64 #define _MC_FPFMT_387 0x10001 65 #define _MC_FPFMT_XMM 0x10002 66 int mc_fpformat; 67 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */ 68 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */ 69 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */ 70 int mc_ownedfp; 71 int mc_spare1[1]; /* align next field to 16 bytes */ 72 /* 73 * See <machine/npx.h> for the internals of mc_fpstate[]. 74 */ 75 int mc_fpstate[128] __aligned(16); 76 77 __register_t mc_fsbase; 78 __register_t mc_gsbase; 79 80 int mc_spare2[6]; 81 } mcontext_t; 82 83 #if defined(_KERNEL) && defined(COMPAT_FREEBSD4) 84 85 struct mcontext4 { 86 __register_t mc_onstack; /* XXX - sigcontext compat. */ 87 __register_t mc_gs; /* machine state (struct trapframe) */ 88 __register_t mc_fs; 89 __register_t mc_es; 90 __register_t mc_ds; 91 __register_t mc_edi; 92 __register_t mc_esi; 93 __register_t mc_ebp; 94 __register_t mc_isp; 95 __register_t mc_ebx; 96 __register_t mc_edx; 97 __register_t mc_ecx; 98 __register_t mc_eax; 99 __register_t mc_trapno; 100 __register_t mc_err; 101 __register_t mc_eip; 102 __register_t mc_cs; 103 __register_t mc_eflags; 104 __register_t mc_esp; /* machine state */ 105 __register_t mc_ss; 106 __register_t mc_fpregs[28]; /* env87 + fpacc87 + u_long */ 107 __register_t __spare__[17]; 108 }; 109 #endif 110 111 #endif /* !_MACHINE_UCONTEXT_H_ */ 112