163 lines
5.1 KiB
C
163 lines
5.1 KiB
C
/* $NetBSD: freebsd_machdep.h,v 1.2 1998/09/11 12:50:07 mycroft Exp $ */
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/*
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* Copyright (c) 1986, 1989, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)signal.h 8.1 (Berkeley) 6/11/93
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* from: Id: signal.h,v 1.4 1994/08/21 04:55:30 paul Exp
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*
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* from: @(#)frame.h 5.2 (Berkeley) 1/18/91
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* from: Id: frame.h,v 1.10 1995/03/16 18:11:42 bde Exp
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*/
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#ifndef _FREEBSD_MACHDEP_H
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#define _FREEBSD_MACHDEP_H
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/*
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* signal support
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*/
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struct freebsd_sigcontext {
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int sc_onstack; /* sigstack state to restore */
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sigset13_t sc_mask; /* signal mask to restore */
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int sc_esp; /* machine state */
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int sc_ebp;
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int sc_isp;
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int sc_eip;
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int sc_eflags;
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int sc_es;
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int sc_ds;
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int sc_cs;
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int sc_ss;
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int sc_edi;
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int sc_esi;
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int sc_ebx;
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int sc_edx;
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int sc_ecx;
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int sc_eax;
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};
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struct freebsd_sigframe {
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int sf_signum;
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int sf_code;
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struct freebsd_sigcontext *sf_scp;
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char *sf_addr;
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sig_t sf_handler;
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struct freebsd_sigcontext sf_sc;
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};
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/*
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* freebsd_ptrace(2) support
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*/
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#define FREEBSD_USRSTACK 0xefbfe000 /* USRSTACK */
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#define FREEBSD_U_AR0_OFFSET 0x0000045c /* offsetof(struct user, u_ar0) */
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#define FREEBSD_U_SAVEFP_OFFSET 0x00000070
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/* offsetof(struct user, u_pcb) + offsetof(struct pcb, pcb_savefpu) */
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/* Exception/Trap Stack Frame */
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struct freebsd_trapframe {
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int tf_es;
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int tf_ds;
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int tf_edi;
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int tf_esi;
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int tf_ebp;
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int tf_isp;
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int tf_ebx;
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int tf_edx;
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int tf_ecx;
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int tf_eax;
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int tf_trapno;
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/* below portion defined in 386 hardware */
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int tf_err;
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int tf_eip;
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int tf_cs;
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int tf_eflags;
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/* below only when transitting rings (e.g. user to kernel) */
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int tf_esp;
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int tf_ss;
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};
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/* Environment information of floating point unit */
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struct freebsd_env87 {
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long en_cw; /* control word (16bits) */
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long en_sw; /* status word (16bits) */
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long en_tw; /* tag word (16bits) */
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long en_fip; /* floating point instruction pointer */
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u_short en_fcs; /* floating code segment selector */
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u_short en_opcode; /* opcode last executed (11 bits ) */
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long en_foo; /* floating operand offset */
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long en_fos; /* floating operand segment selector */
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};
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/* Contents of each floating point accumulator */
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struct freebsd_fpacc87 {
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#ifdef dontdef /* too unportable */
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u_long fp_mantlo; /* mantissa low (31:0) */
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u_long fp_manthi; /* mantissa high (63:32) */
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int fp_exp:15; /* exponent */
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int fp_sgn:1; /* mantissa sign */
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#else
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u_char fp_bytes[10];
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#endif
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};
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/* Floating point context */
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struct freebsd_save87 {
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struct freebsd_env87 sv_env; /* floating point control/status */
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struct freebsd_fpacc87 sv_ac[8]; /* accumulator contents, 0-7 */
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u_long sv_ex_sw; /* status word for last exception */
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/*
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* Bogus padding for emulators. Emulators should use their own
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* struct and arrange to store into this struct (ending here)
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* before it is inspected for ptracing or for core dumps. Some
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* emulators overwrite the whole struct. We have no good way of
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* knowing how much padding to leave. Leave just enough for the
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* GPL emulator's i387_union (176 bytes total).
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*/
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u_char sv_pad[64]; /* padding; used by emulators */
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};
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struct freebsd_ptrace_reg {
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struct freebsd_trapframe freebsd_ptrace_regs;
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struct freebsd_save87 freebsd_ptrace_fpregs;
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};
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/* sys/i386/include/exec.h */
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#define FREEBSD___LDPGSZ 4096
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void freebsd_sendsig __P((sig_t, int, sigset_t *, u_long));
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#endif /* _FREEBSD_MACHDEP_H */
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