172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/* $NetBSD: mcontext.h,v 1.14 2011/02/25 14:07:12 joerg Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Klaus Klein.
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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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _AMD64_MCONTEXT_H_
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#define _AMD64_MCONTEXT_H_
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#ifdef __x86_64__
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#include <machine/frame_regs.h>
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/*
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* General register state
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*/
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#define GREG_OFFSETS(reg, REG, idx) _REG_##REG = idx,
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enum { _FRAME_GREG(GREG_OFFSETS) _NGREG = 26 };
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#undef GREG_OFFSETS
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typedef unsigned long __greg_t;
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typedef __greg_t __gregset_t[_NGREG];
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/* These names are for compatibility */
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#define _REG_URSP _REG_RSP
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#define _REG_RFL _REG_RFLAGS
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/*
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* Floating point register state
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*/
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typedef char __fpregset_t[512];
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/*
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* The padding below is to make __fpregs have a 16-byte aligned offset
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* within ucontext_t.
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*/
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typedef struct {
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__gregset_t __gregs;
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__greg_t _mc_tlsbase;
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__fpregset_t __fpregs;
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} mcontext_t;
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#define _UC_UCONTEXT_ALIGN (~0xf)
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#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_RSP] - 128)
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#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_RIP])
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#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_RAX])
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#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
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#define _UC_TLSBASE 0x00080000
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/*
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* mcontext extensions to handle signal delivery.
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*/
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#define _UC_SETSTACK 0x00010000
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#define _UC_CLRSTACK 0x00020000
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#define __UCONTEXT_SIZE 784
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static __inline void *
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__lwp_getprivate_fast(void)
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{
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void *__tmp;
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__asm volatile("movq %%fs:0, %0" : "=r" (__tmp));
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return __tmp;
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}
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#ifdef _KERNEL
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/*
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* 32bit context definitions.
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*/
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#define _NGREG32 19
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typedef unsigned int __greg32_t;
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typedef __greg32_t __gregset32_t[_NGREG32];
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#define _REG32_GS 0
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#define _REG32_FS 1
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#define _REG32_ES 2
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#define _REG32_DS 3
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#define _REG32_EDI 4
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#define _REG32_ESI 5
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#define _REG32_EBP 6
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#define _REG32_ESP 7
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#define _REG32_EBX 8
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#define _REG32_EDX 9
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#define _REG32_ECX 10
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#define _REG32_EAX 11
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#define _REG32_TRAPNO 12
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#define _REG32_ERR 13
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#define _REG32_EIP 14
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#define _REG32_CS 15
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#define _REG32_EFL 16
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#define _REG32_UESP 17
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#define _REG32_SS 18
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#define _UC_MACHINE32_SP(uc) ((uc)->uc_mcontext.__gregs[_REG32_UESP])
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/*
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* Floating point register state
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*/
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typedef struct {
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union {
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struct {
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int __fp_state[27]; /* Environment and registers */
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int __fp_status; /* Software status word */
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} __fpchip_state;
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struct {
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char __fp_emul[246];
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char __fp_epad[2];
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} __fp_emul_space;
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struct {
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char __fp_xmm[512];
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} __fp_xmm_state;
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int __fp_fpregs[128];
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} __fp_reg_set;
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int __fp_wregs[33]; /* Weitek? */
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} __fpregset32_t;
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typedef struct {
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__gregset32_t __gregs;
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__fpregset32_t __fpregs;
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uint32_t _mc_tlsbase;
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} mcontext32_t;
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#define _UC_MACHINE32_PAD 4
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#define __UCONTEXT32_SIZE 776
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struct trapframe;
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struct lwp;
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int check_mcontext(struct lwp *, const mcontext_t *, struct trapframe *);
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#endif /* _KERNEL */
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#else /* __x86_64__ */
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#include <i386/mcontext.h>
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#endif /* __x86_64__ */
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#endif /* !_AMD64_MCONTEXT_H_ */
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