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/* $OpenBSD: freebsd_machdep.h,v 1.7 2003/06/02 23:27:47 millert Exp $ */
/* $NetBSD: freebsd_machdep.h,v 1.1 1995/10/10 01:22:35 mycroft Exp $ */
/*
* Copyright (c) 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)signal.h 8.1 (Berkeley) 6/11/93
* from: Id: signal.h,v 1.4 1994/08/21 04:55:30 paul Exp
*
* from: @(#)frame.h 5.2 (Berkeley) 1/18/91
* from: Id: frame.h,v 1.10 1995/03/16 18:11:42 bde Exp
*/
#ifndef _FREEBSD_MACHDEP_H
#define _FREEBSD_MACHDEP_H
/*
* signal support
*/
struct freebsd_sigcontext {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore */
int sc_esp; /* machine state */
int sc_ebp;
int sc_isp;
int sc_eip;
int sc_eflags;
int sc_es;
int sc_ds;
int sc_cs;
int sc_ss;
int sc_edi;
int sc_esi;
int sc_ebx;
int sc_edx;
int sc_ecx;
int sc_eax;
};
struct freebsd_sigframe {
int sf_signum;
int sf_code;
struct freebsd_sigcontext *sf_scp;
char *sf_addr;
sig_t sf_handler;
struct freebsd_sigcontext sf_sc;
};
/*
* freebsd_ptrace(2) support
*/
#define FREEBSD_USRSTACK 0xefbfe000 /* USRSTACK */
#define FREEBSD_U_AR0_OFFSET 0x0000045c /* offsetof(struct user, u_ar0) */
#define FREEBSD_U_SAVEFP_OFFSET 0x00000070
/* offsetof(struct user, u_pcb) + offsetof(struct pcb, pcb_savefpu) */
/* Exception/Trap Stack Frame */
struct freebsd_trapframe {
int tf_es;
int tf_ds;
int tf_edi;
int tf_esi;
int tf_ebp;
int tf_isp;
int tf_ebx;
int tf_edx;
int tf_ecx;
int tf_eax;
int tf_trapno;
/* below portion defined in 386 hardware */
int tf_err;
int tf_eip;
int tf_cs;
int tf_eflags;
/* below only when transitting rings (e.g. user to kernel) */
int tf_esp;
int tf_ss;
};
/* Environment information of floating point unit */
struct freebsd_env87 {
long en_cw; /* control word (16bits) */
long en_sw; /* status word (16bits) */
long en_tw; /* tag word (16bits) */
long en_fip; /* floating point instruction pointer */
u_short en_fcs; /* floating code segment selector */
u_short en_opcode; /* opcode last executed (11 bits ) */
long en_foo; /* floating operand offset */
long en_fos; /* floating operand segment selector */
};
/* Contents of each floating point accumulator */
struct freebsd_fpacc87 {
#ifdef dontdef /* too unportable */
u_long fp_mantlo; /* mantissa low (31:0) */
u_long fp_manthi; /* mantissa high (63:32) */
int fp_exp:15; /* exponent */
int fp_sgn:1; /* mantissa sign */
#else
u_char fp_bytes[10];
#endif
};
/* Floating point context */
struct freebsd_save87 {
struct freebsd_env87 sv_env; /* floating point control/status */
struct freebsd_fpacc87 sv_ac[8]; /* accumulator contents, 0-7 */
u_long sv_ex_sw; /* status word for last exception */
/*
* Bogus padding for emulators. Emulators should use their own
* struct and arrange to store into this struct (ending here)
* before it is inspected for ptracing or for core dumps. Some
* emulators overwrite the whole struct. We have no good way of
* knowing how much padding to leave. Leave just enough for the
* GPL emulator's i387_union (176 bytes total).
*/
u_char sv_pad[64]; /* padding; used by emulators */
};
struct freebsd_ptrace_reg {
struct freebsd_trapframe freebsd_ptrace_regs;
struct freebsd_save87 freebsd_ptrace_fpregs;
};
/* sys/i386/include/exec.h */
#define FREEBSD___LDPGSZ 4096
#ifdef _KERNEL
void freebsd_sendsig(sig_t, int, int, u_long, int, union sigval);
#endif
#endif /* _FREEBSD_MACHDEP_H */
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