Annotation of sys/arch/i386/include/freebsd_machdep.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: freebsd_machdep.h,v 1.7 2003/06/02 23:27:47 millert Exp $ */
! 2: /* $NetBSD: freebsd_machdep.h,v 1.1 1995/10/10 01:22:35 mycroft Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1986, 1989, 1991, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to Berkeley by
! 9: * William Jolitz.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: *
! 35: * from: @(#)signal.h 8.1 (Berkeley) 6/11/93
! 36: * from: Id: signal.h,v 1.4 1994/08/21 04:55:30 paul Exp
! 37: *
! 38: * from: @(#)frame.h 5.2 (Berkeley) 1/18/91
! 39: * from: Id: frame.h,v 1.10 1995/03/16 18:11:42 bde Exp
! 40: */
! 41: #ifndef _FREEBSD_MACHDEP_H
! 42: #define _FREEBSD_MACHDEP_H
! 43:
! 44: /*
! 45: * signal support
! 46: */
! 47:
! 48: struct freebsd_sigcontext {
! 49: int sc_onstack; /* sigstack state to restore */
! 50: int sc_mask; /* signal mask to restore */
! 51: int sc_esp; /* machine state */
! 52: int sc_ebp;
! 53: int sc_isp;
! 54: int sc_eip;
! 55: int sc_eflags;
! 56: int sc_es;
! 57: int sc_ds;
! 58: int sc_cs;
! 59: int sc_ss;
! 60: int sc_edi;
! 61: int sc_esi;
! 62: int sc_ebx;
! 63: int sc_edx;
! 64: int sc_ecx;
! 65: int sc_eax;
! 66: };
! 67:
! 68: struct freebsd_sigframe {
! 69: int sf_signum;
! 70: int sf_code;
! 71: struct freebsd_sigcontext *sf_scp;
! 72: char *sf_addr;
! 73: sig_t sf_handler;
! 74: struct freebsd_sigcontext sf_sc;
! 75: };
! 76:
! 77: /*
! 78: * freebsd_ptrace(2) support
! 79: */
! 80:
! 81: #define FREEBSD_USRSTACK 0xefbfe000 /* USRSTACK */
! 82: #define FREEBSD_U_AR0_OFFSET 0x0000045c /* offsetof(struct user, u_ar0) */
! 83: #define FREEBSD_U_SAVEFP_OFFSET 0x00000070
! 84: /* offsetof(struct user, u_pcb) + offsetof(struct pcb, pcb_savefpu) */
! 85:
! 86: /* Exception/Trap Stack Frame */
! 87: struct freebsd_trapframe {
! 88: int tf_es;
! 89: int tf_ds;
! 90: int tf_edi;
! 91: int tf_esi;
! 92: int tf_ebp;
! 93: int tf_isp;
! 94: int tf_ebx;
! 95: int tf_edx;
! 96: int tf_ecx;
! 97: int tf_eax;
! 98: int tf_trapno;
! 99: /* below portion defined in 386 hardware */
! 100: int tf_err;
! 101: int tf_eip;
! 102: int tf_cs;
! 103: int tf_eflags;
! 104: /* below only when transitting rings (e.g. user to kernel) */
! 105: int tf_esp;
! 106: int tf_ss;
! 107: };
! 108:
! 109: /* Environment information of floating point unit */
! 110: struct freebsd_env87 {
! 111: long en_cw; /* control word (16bits) */
! 112: long en_sw; /* status word (16bits) */
! 113: long en_tw; /* tag word (16bits) */
! 114: long en_fip; /* floating point instruction pointer */
! 115: u_short en_fcs; /* floating code segment selector */
! 116: u_short en_opcode; /* opcode last executed (11 bits ) */
! 117: long en_foo; /* floating operand offset */
! 118: long en_fos; /* floating operand segment selector */
! 119: };
! 120:
! 121: /* Contents of each floating point accumulator */
! 122: struct freebsd_fpacc87 {
! 123: #ifdef dontdef /* too unportable */
! 124: u_long fp_mantlo; /* mantissa low (31:0) */
! 125: u_long fp_manthi; /* mantissa high (63:32) */
! 126: int fp_exp:15; /* exponent */
! 127: int fp_sgn:1; /* mantissa sign */
! 128: #else
! 129: u_char fp_bytes[10];
! 130: #endif
! 131: };
! 132:
! 133: /* Floating point context */
! 134: struct freebsd_save87 {
! 135: struct freebsd_env87 sv_env; /* floating point control/status */
! 136: struct freebsd_fpacc87 sv_ac[8]; /* accumulator contents, 0-7 */
! 137: u_long sv_ex_sw; /* status word for last exception */
! 138: /*
! 139: * Bogus padding for emulators. Emulators should use their own
! 140: * struct and arrange to store into this struct (ending here)
! 141: * before it is inspected for ptracing or for core dumps. Some
! 142: * emulators overwrite the whole struct. We have no good way of
! 143: * knowing how much padding to leave. Leave just enough for the
! 144: * GPL emulator's i387_union (176 bytes total).
! 145: */
! 146: u_char sv_pad[64]; /* padding; used by emulators */
! 147: };
! 148:
! 149: struct freebsd_ptrace_reg {
! 150: struct freebsd_trapframe freebsd_ptrace_regs;
! 151: struct freebsd_save87 freebsd_ptrace_fpregs;
! 152: };
! 153:
! 154: /* sys/i386/include/exec.h */
! 155: #define FREEBSD___LDPGSZ 4096
! 156:
! 157: #ifdef _KERNEL
! 158: void freebsd_sendsig(sig_t, int, int, u_long, int, union sigval);
! 159: #endif
! 160:
! 161: #endif /* _FREEBSD_MACHDEP_H */
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