0cdf4ffabc
To keep these structures ABI-compatible, half the size of r_trapno, r_err, mc_trapno, mc_flags. Add fsbase and gsbase to mcontext on both amd64 and i386. Add flags to amd64 mcontext to indicate that it contains valid segments or bases. In collaboration with: pho Discussed with: peter Reviewed by: jhb
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*-
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* Copyright (c) 2003 Peter Wemm
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* Copyright (c) 1999 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_UCONTEXT_H_
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#define _MACHINE_UCONTEXT_H_
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/*
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* mc_trapno bits. Shall be in sync with TF_XXX.
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*/
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#define _MC_HASSEGS 0x1
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#define _MC_HASBASES 0x2
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#define _MC_FLAG_MASK (_MC_HASSEGS | _MC_HASBASES)
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typedef struct __mcontext {
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/*
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* The first 24 fields must match the definition of
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* sigcontext. So that we can support sigcontext
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* and ucontext_t at the same time.
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*/
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__register_t mc_onstack; /* XXX - sigcontext compat. */
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__register_t mc_rdi; /* machine state (struct trapframe) */
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__register_t mc_rsi;
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__register_t mc_rdx;
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__register_t mc_rcx;
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__register_t mc_r8;
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__register_t mc_r9;
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__register_t mc_rax;
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__register_t mc_rbx;
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__register_t mc_rbp;
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__register_t mc_r10;
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__register_t mc_r11;
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__register_t mc_r12;
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__register_t mc_r13;
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__register_t mc_r14;
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__register_t mc_r15;
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__uint32_t mc_trapno;
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__uint16_t mc_fs;
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__uint16_t mc_gs;
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__register_t mc_addr;
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__uint32_t mc_flags;
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__uint16_t mc_es;
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__uint16_t mc_ds;
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__register_t mc_err;
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__register_t mc_rip;
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__register_t mc_cs;
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__register_t mc_rflags;
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__register_t mc_rsp;
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__register_t mc_ss;
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long mc_len; /* sizeof(mcontext_t) */
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#define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
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#define _MC_FPFMT_XMM 0x10002
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long mc_fpformat;
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#define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
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#define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
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#define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
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long mc_ownedfp;
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/*
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* See <machine/fpu.h> for the internals of mc_fpstate[].
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*/
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long mc_fpstate[64] __aligned(16);
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__register_t mc_fsbase;
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__register_t mc_gsbase;
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long mc_spare[6];
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} mcontext_t;
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#endif /* !_MACHINE_UCONTEXT_H_ */
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