diff options
Diffstat (limited to 'sys/gnu/i386/fpemul/reg_constant.c')
| -rw-r--r-- | sys/gnu/i386/fpemul/reg_constant.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/sys/gnu/i386/fpemul/reg_constant.c b/sys/gnu/i386/fpemul/reg_constant.c deleted file mode 100644 index bd16fe4..0000000 --- a/sys/gnu/i386/fpemul/reg_constant.c +++ /dev/null @@ -1,166 +0,0 @@ -/* - * reg_constant.c - * - * All of the constant FPU_REGs - * - * - * 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. - * - * $FreeBSD$ - */ - - - -#include <sys/param.h> -#include <sys/proc.h> -#include <machine/pcb.h> - -#include <gnu/i386/fpemul/fpu_emu.h> -#include <gnu/i386/fpemul/fpu_system.h> -#include <gnu/i386/fpemul/status_w.h> - - -FPU_REG CONST_1 = {SIGN_POS, TW_Valid, EXP_BIAS, -0x00000000, 0x80000000}; -static FPU_REG CONST_L2T = {SIGN_POS, TW_Valid, EXP_BIAS + 1, -0xcd1b8afe, 0xd49a784b}; -static FPU_REG CONST_L2E = {SIGN_POS, TW_Valid, EXP_BIAS, -0x5c17f0bc, 0xb8aa3b29}; -FPU_REG CONST_PI = {SIGN_POS, TW_Valid, EXP_BIAS + 1, -0x2168c235, 0xc90fdaa2}; -FPU_REG CONST_PI2 = {SIGN_POS, TW_Valid, EXP_BIAS, -0x2168c235, 0xc90fdaa2}; -FPU_REG CONST_PI4 = {SIGN_POS, TW_Valid, EXP_BIAS - 1, -0x2168c235, 0xc90fdaa2}; -static FPU_REG CONST_LG2 = {SIGN_POS, TW_Valid, EXP_BIAS - 2, -0xfbcff799, 0x9a209a84}; -FPU_REG CONST_LN2 = {SIGN_POS, TW_Valid, EXP_BIAS - 1, -0xd1cf79ac, 0xb17217f7}; -/* Only the sign (and tag) is used in internal zeroes */ -FPU_REG CONST_Z = {SIGN_POS, TW_Zero, 0, 0x0, 0x0}; -/* Only the sign and significand (and tag) are used in internal NaNs */ -/* The 80486 never generates one of these -FPU_REG CONST_SNAN = { SIGN_POS, TW_NaN, EXP_OVER, 0x00000001, 0x80000000 }; - */ -/* This is the real indefinite QNaN */ -FPU_REG CONST_QNaN = {SIGN_NEG, TW_NaN, EXP_OVER, 0x00000000, 0xC0000000}; -/* Only the sign (and tag) is used in internal infinities */ -FPU_REG CONST_INF = {SIGN_POS, TW_Infinity, EXP_OVER, 0x00000000, 0x80000000}; - - - -static void -fld_const(FPU_REG * c) -{ - FPU_REG *st_new_ptr; - - if (STACK_OVERFLOW) { - stack_overflow(); - return; - } - push(); - reg_move(c, FPU_st0_ptr); - status_word &= ~SW_C1; -} - - -static void -fld1(void) -{ - fld_const(&CONST_1); -} - -static void -fldl2t(void) -{ - fld_const(&CONST_L2T); -} - -static void -fldl2e(void) -{ - fld_const(&CONST_L2E); -} - -static void -fldpi(void) -{ - fld_const(&CONST_PI); -} - -static void -fldlg2(void) -{ - fld_const(&CONST_LG2); -} - -static void -fldln2(void) -{ - fld_const(&CONST_LN2); -} - -static void -fldz(void) -{ - fld_const(&CONST_Z); -} - -static FUNC constants_table[] = { - fld1, fldl2t, fldl2e, fldpi, fldlg2, fldln2, fldz, Un_impl -}; - -void -fconst(void) -{ - (constants_table[FPU_rm]) (); -} |
