diff options
Diffstat (limited to 'sys/gnu/arch/i386/fpemul/fpu_system.h')
| -rw-r--r-- | sys/gnu/arch/i386/fpemul/fpu_system.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sys/gnu/arch/i386/fpemul/fpu_system.h b/sys/gnu/arch/i386/fpemul/fpu_system.h new file mode 100644 index 00000000000..5d3a3cebb5c --- /dev/null +++ b/sys/gnu/arch/i386/fpemul/fpu_system.h @@ -0,0 +1,102 @@ +/* $OpenBSD: fpu_system.h,v 1.1 1996/08/27 10:32:49 downsj Exp $ */ +/* + * fpu_system.h + * + * + * Copyright (C) 1992,1993,1994 + * W. Metzenthen, 22 Parker St, Ormond, Vic 3163, + * Australia. E-mail billm@vaxc.cc.monash.edu.au + * All rights reserved. + * + * This copyright notice covers the redistribution and use of the + * FPU emulator developed by W. Metzenthen. It covers only its use + * in the 386BSD, FreeBSD and NetBSD operating systems. Any other + * use is not permitted under this copyright. + * + * 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 include information specifying + * that source code for the emulator is freely available and include + * either: + * a) an offer to provide the source code for a nominal distribution + * fee, or + * b) list at least two alternative methods whereby the source + * can be obtained, e.g. a publically accessible bulletin board + * and an anonymous ftp site from which the software can be + * downloaded. + * 3. All advertising materials specifically mentioning features or use of + * this emulator must acknowledge that it was developed by W. Metzenthen. + * 4. The name of W. Metzenthen may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED ``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 + * W. METZENTHEN 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. + * + * + * The purpose of this copyright, based upon the Berkeley copyright, is to + * ensure that the covered software remains freely available to everyone. + * + * The software (with necessary differences) is also available, but under + * the terms of the GNU copyleft, for the Linux operating system and for + * the djgpp ms-dos extender. + * + * W. Metzenthen June 1994. + * + * + * $FreeBSD: fpu_system.h,v 1.4 1995/05/30 07:57:51 rgrimes Exp $ + * + */ + + +#ifndef _FPU_SYSTEM_H +#define _FPU_SYSTEM_H + +/* system dependent definitions */ + +/* +#include <linux/sched.h> +#include <linux/kernel.h> +*/ + +#if defined(__FreeBSD__) +#define I387 (*(union i387_union *)&(((struct pcb *)curproc->p_addr)->pcb_savefpu)) +#else +#define I387 (*(union i387_union *)&(((struct pcb *)curproc->p_addr)->pcb_savefpu.gplemu)) +#endif +#define FPU_info (I387.soft.frame) + +#define FPU_CS (*(unsigned short *) &(FPU_info->tf_cs)) +#define FPU_DS (*(unsigned short *) &(FPU_info->tf_ds)) +#define FPU_EAX (FPU_info->tf_eax) +#define FPU_EFLAGS (FPU_info->tf_eflags) +#define FPU_EIP (FPU_info->tf_eip) +/*#define FPU_ORIG_EIP (FPU_info->___orig_eip) */ +/*#define FPU_ORIG_EIP (FPU_info->tf_isp)*/ +#define FPU_ORIG_EIP (I387.soft.orig_eip) + +#define FPU_lookahead (I387.soft.lookahead) +#define FPU_entry_eip (I387.soft.entry_eip) + +#define status_word (I387.soft.swd) +#define control_word (I387.soft.cwd) +#define regs (I387.soft.regs) +#define top (I387.soft.top) + +#define ip_offset (I387.soft.fip) +#define cs_selector (I387.soft.fcs) +#define data_operand_offset (I387.soft.foo) +#define operand_selector (I387.soft.fos) + +#endif |