1 /*- 2 * Copyright (c) 2003 Peter Wemm 3 * Copyright (c) 1999 Marcel Moolenaar 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer 11 * in this position and unchanged. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_UCONTEXT_H_ 33 #define _MACHINE_UCONTEXT_H_ 34 35 /* 36 * mc_trapno bits. Shall be in sync with TF_XXX. 37 */ 38 #define _MC_HASSEGS 0x1 39 #define _MC_HASBASES 0x2 40 #define _MC_HASFPXSTATE 0x4 41 #define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE) 42 43 typedef struct __mcontext { 44 /* 45 * The definition of mcontext_t must match the layout of 46 * struct sigcontext after the sc_mask member. This is so 47 * that we can support sigcontext and ucontext_t at the same 48 * time. 49 */ 50 __register_t mc_onstack; /* XXX - sigcontext compat. */ 51 __register_t mc_rdi; /* machine state (struct trapframe) */ 52 __register_t mc_rsi; 53 __register_t mc_rdx; 54 __register_t mc_rcx; 55 __register_t mc_r8; 56 __register_t mc_r9; 57 __register_t mc_rax; 58 __register_t mc_rbx; 59 __register_t mc_rbp; 60 __register_t mc_r10; 61 __register_t mc_r11; 62 __register_t mc_r12; 63 __register_t mc_r13; 64 __register_t mc_r14; 65 __register_t mc_r15; 66 __uint32_t mc_trapno; 67 __uint16_t mc_fs; 68 __uint16_t mc_gs; 69 __register_t mc_addr; 70 __uint32_t mc_flags; 71 __uint16_t mc_es; 72 __uint16_t mc_ds; 73 __register_t mc_err; 74 __register_t mc_rip; 75 __register_t mc_cs; 76 __register_t mc_rflags; 77 __register_t mc_rsp; 78 __register_t mc_ss; 79 80 long mc_len; /* sizeof(mcontext_t) */ 81 82 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */ 83 #define _MC_FPFMT_XMM 0x10002 84 long mc_fpformat; 85 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */ 86 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */ 87 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */ 88 long mc_ownedfp; 89 /* 90 * See <machine/fpu.h> for the internals of mc_fpstate[]. 91 */ 92 long mc_fpstate[64] __aligned(16); 93 94 __register_t mc_fsbase; 95 __register_t mc_gsbase; 96 97 __register_t mc_xfpustate; 98 __register_t mc_xfpustate_len; 99 100 long mc_spare[4]; 101 } mcontext_t; 102 103 #endif /* !_MACHINE_UCONTEXT_H_ */ 104