2 * Copyright (c) 2003 Peter Wemm
3 * Copyright (c) 1999 Marcel Moolenaar
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
32 #ifndef _X86_UCONTEXT_H_
33 #define _X86_UCONTEXT_H_
36 /* Keep _MC_* values similar to amd64 */
37 #define _MC_HASSEGS 0x1
38 #define _MC_HASBASES 0x2
39 #define _MC_HASFPXSTATE 0x4
40 #define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE)
42 typedef struct __mcontext {
44 * The definition of mcontext_t must match the layout of
45 * struct sigcontext after the sc_mask member. This is so
46 * that we can support sigcontext and ucontext_t at the same
49 __register_t mc_onstack; /* XXX - sigcontext compat. */
50 __register_t mc_gs; /* machine state (struct trapframe) */
62 __register_t mc_trapno;
66 __register_t mc_eflags;
70 int mc_len; /* sizeof(mcontext_t) */
71 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
72 #define _MC_FPFMT_387 0x10001
73 #define _MC_FPFMT_XMM 0x10002
75 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
76 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
77 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
79 __register_t mc_flags;
81 * See <machine/npx.h> for the internals of mc_fpstate[].
83 int mc_fpstate[128] __aligned(16);
85 __register_t mc_fsbase;
86 __register_t mc_gsbase;
88 __register_t mc_xfpustate;
89 __register_t mc_xfpustate_len;
97 * mc_trapno bits. Shall be in sync with TF_XXX.
99 #define _MC_HASSEGS 0x1
100 #define _MC_HASBASES 0x2
101 #define _MC_HASFPXSTATE 0x4
102 #define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES | _MC_HASFPXSTATE)
104 typedef struct __mcontext {
106 * The definition of mcontext_t must match the layout of
107 * struct sigcontext after the sc_mask member. This is so
108 * that we can support sigcontext and ucontext_t at the same
111 __register_t mc_onstack; /* XXX - sigcontext compat. */
112 __register_t mc_rdi; /* machine state (struct trapframe) */
127 __uint32_t mc_trapno;
130 __register_t mc_addr;
137 __register_t mc_rflags;
141 long mc_len; /* sizeof(mcontext_t) */
143 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
144 #define _MC_FPFMT_XMM 0x10002
146 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
147 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
148 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
151 * See <machine/fpu.h> for the internals of mc_fpstate[].
153 long mc_fpstate[64] __aligned(16);
155 __register_t mc_fsbase;
156 __register_t mc_gsbase;
158 __register_t mc_xfpustate;
159 __register_t mc_xfpustate_len;
163 #endif /* __amd64__ */
165 #endif /* !_X86_UCONTEXT_H_ */