1 /*- 2 * Copyright (c) 2003 Peter Wemm 3 * Copyright (c) 1999 Marcel Moolenaar 4 * Copyright (c) 2008 The DragonFly Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer 12 * in this position and unchanged. 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 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD: src/sys/amd64/include/ucontext.h,v 1.18 2003/11/08 04:39:22 peter Exp $ 31 */ 32 33 #ifndef _CPU_UCONTEXT_H_ 34 #define _CPU_UCONTEXT_H_ 35 36 #include <sys/cdefs.h> 37 38 #include <machine/stdint.h> 39 40 struct __mcontext { 41 /* 42 * The first 20 fields must match the definition of 43 * sigcontext. So that we can support sigcontext 44 * and ucontext_t at the same time. 45 * 46 * NOTE: bcopy in sendsig copies trapframe to this 47 * structure as of mc_rdi. 48 */ 49 __register_t mc_onstack; /* XXX - sigcontext compat. */ 50 __register_t mc_rdi; 51 __register_t mc_rsi; 52 __register_t mc_rdx; 53 __register_t mc_rcx; 54 __register_t mc_r8; 55 __register_t mc_r9; 56 __register_t mc_rax; 57 __register_t mc_rbx; 58 __register_t mc_rbp; 59 __register_t mc_r10; 60 __register_t mc_r11; 61 __register_t mc_r12; 62 __register_t mc_r13; 63 __register_t mc_r14; 64 __register_t mc_r15; 65 __register_t mc_xflags; 66 __register_t mc_trapno; 67 __register_t mc_addr; 68 __register_t mc_flags; 69 __register_t mc_err; 70 __register_t mc_rip; 71 __register_t mc_cs; 72 __register_t mc_rflags; 73 __register_t mc_rsp; /* machine state */ 74 __register_t mc_ss; 75 76 unsigned int mc_len; /* sizeof(mcontext_t) */ 77 unsigned int mc_fpformat; 78 unsigned int mc_ownedfp; 79 unsigned int mc_reserved; 80 unsigned int mc_unused[8]; 81 82 /* 83 * NOTE! 64-byte aligned as of here. Also must match savefpu 84 * structure. 85 */ 86 int mc_fpregs[256]; 87 } __aligned(64); 88 89 typedef struct __mcontext mcontext_t; 90 91 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */ 92 #define _MC_FPFMT_387 0x10001 93 #define _MC_FPFMT_XMM 0x10002 94 #define _MC_FPFMT_YMM 0x10003 95 96 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */ 97 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */ 98 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */ 99 100 #endif /* !_CPU_UCONTEXT_H_ */ 101