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 /* Keep _MC_* values similar to amd64 */ 35 #define _MC_HASSEGS 0x1 36 #define _MC_HASBASES 0x2 37 #define _MC_HASFPXSTATE 0x4 38 #define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE) 39 40 typedef struct __mcontext { 41 /* 42 * The definition of mcontext_t must match the layout of 43 * struct sigcontext after the sc_mask member. This is so 44 * that we can support sigcontext and ucontext_t at the same 45 * time. 46 */ 47 __register_t mc_onstack; /* XXX - sigcontext compat. */ 48 __register_t mc_gs; /* machine state (struct trapframe) */ 49 __register_t mc_fs; 50 __register_t mc_es; 51 __register_t mc_ds; 52 __register_t mc_edi; 53 __register_t mc_esi; 54 __register_t mc_ebp; 55 __register_t mc_isp; 56 __register_t mc_ebx; 57 __register_t mc_edx; 58 __register_t mc_ecx; 59 __register_t mc_eax; 60 __register_t mc_trapno; 61 __register_t mc_err; 62 __register_t mc_eip; 63 __register_t mc_cs; 64 __register_t mc_eflags; 65 __register_t mc_esp; 66 __register_t mc_ss; 67 68 int mc_len; /* sizeof(mcontext_t) */ 69 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */ 70 #define _MC_FPFMT_387 0x10001 71 #define _MC_FPFMT_XMM 0x10002 72 int mc_fpformat; 73 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */ 74 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */ 75 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */ 76 int mc_ownedfp; 77 __register_t mc_flags; 78 /* 79 * See <machine/npx.h> for the internals of mc_fpstate[]. 80 */ 81 int mc_fpstate[128] __aligned(16); 82 83 __register_t mc_fsbase; 84 __register_t mc_gsbase; 85 86 __register_t mc_xfpustate; 87 __register_t mc_xfpustate_len; 88 89 int mc_spare2[4]; 90 } mcontext_t; 91 92 #if defined(_KERNEL) && defined(COMPAT_FREEBSD4) 93 struct mcontext4 { 94 __register_t mc_onstack; /* XXX - sigcontext compat. */ 95 __register_t mc_gs; /* machine state (struct trapframe) */ 96 __register_t mc_fs; 97 __register_t mc_es; 98 __register_t mc_ds; 99 __register_t mc_edi; 100 __register_t mc_esi; 101 __register_t mc_ebp; 102 __register_t mc_isp; 103 __register_t mc_ebx; 104 __register_t mc_edx; 105 __register_t mc_ecx; 106 __register_t mc_eax; 107 __register_t mc_trapno; 108 __register_t mc_err; 109 __register_t mc_eip; 110 __register_t mc_cs; 111 __register_t mc_eflags; 112 __register_t mc_esp; /* machine state */ 113 __register_t mc_ss; 114 __register_t mc_fpregs[28]; /* env87 + fpacc87 + u_long */ 115 __register_t __spare__[17]; 116 }; 117 #endif 118 119 #endif /* !_MACHINE_UCONTEXT_H_ */ 120