/* $OpenBSD: fpu_fmovecr.c,v 1.5 1999/01/11 05:11:33 millert Exp $ */ /* $NetBSD: fpu_fmovecr.c,v 1.6 1996/10/13 03:19:13 christos Exp $ */ /* * Copyright (c) 1995 Ken Nakata * All rights reserved. * * 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 author 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 AUTHOR 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 AUTHOR 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. * * @(#)fpu_fmovecr.c 10/8/95 */ #include #include #include #include "fpu_emulate.h" static struct fpn constrom[] = { /* fp_class, fp_sign, fp_exp, fp_sticky, fp_mant[0] ... [3] */ { FPC_NUM, 0, 1, 0, { 0x6487e, 0xd5110b46, 0x11a80000, 0x0 } }, { FPC_NUM, 0, -2, 0, { 0x4d104, 0xd427de7f, 0xbcc00000, 0x0 } }, { FPC_NUM, 0, 1, 0, { 0x56fc2, 0xa2c515da, 0x54d00000, 0x0 } }, { FPC_NUM, 0, 0, 0, { 0x5c551, 0xd94ae0bf, 0x85e00000, 0x0 } }, { FPC_NUM, 0, -2, 0, { 0x6f2de, 0xc549b943, 0x8ca80000, 0x0 } }, { FPC_ZERO, 0, 0, 0, { 0x0, 0x0, 0x0, 0x0 } }, { FPC_NUM, 0, -1, 0, { 0x58b90, 0xbfbe8e7b, 0xcd600000, 0x0 } }, { FPC_NUM, 0, 1, 0, { 0x49aec, 0x6eed5545, 0x60b80000, 0x0 } }, { FPC_NUM, 0, 0, 0, { 0x40000, 0x0, 0x0, 0x0 } }, { FPC_NUM, 0, 3, 0, { 0x50000, 0x0, 0x0, 0x0 } }, { FPC_NUM, 0, 6, 0, { 0x64000, 0x0, 0x0, 0x0 } }, { FPC_NUM, 0, 13, 0, { 0x4e200, 0x0, 0x0, 0x0 } }, { FPC_NUM, 0, 26, 0, { 0x5f5e1, 0x0, 0x0, 0x0 } }, { FPC_NUM, 0, 53, 0, { 0x470de, 0x4df82000, 0x0, 0x0 } }, { FPC_NUM, 0, 106, 0, { 0x4ee2d, 0x6d415b85, 0xacf00000, 0x0 } }, { FPC_NUM, 0, 212, 0, { 0x613c0, 0xfa4ffe7d, 0x36a80000, 0x0 } }, { FPC_NUM, 0, 425, 0, { 0x49dd2, 0x3e4c074c, 0x67000000, 0x0 } }, { FPC_NUM, 0, 850, 0, { 0x553f7, 0x5fdcefce, 0xf4700000, 0x0 } }, { FPC_NUM, 0, 1700, 0, { 0x718cd, 0x5753074, 0x8e380000, 0x0 } }, { FPC_NUM, 0, 3401, 0, { 0x64bb3, 0xac340ba8, 0x60b80000, 0x0 } }, { FPC_NUM, 0, 6803, 0, { 0x4f459, 0xdaee29ea, 0xef280000, 0x0 } }, { FPC_NUM, 0, 13606, 0, { 0x62302, 0x90145104, 0xbcd80000, 0x0 } }, }; struct fpn * fpu_const(fp, offset) struct fpn *fp; u_int offset; { struct fpn *r; #ifdef DEBUG if (fp == NULL) { panic("fpu_const: NULL pointer passed"); } #endif if (offset == 0) { r = &constrom[0]; } else if (0xb <= offset && offset <= 0xe) { r = &constrom[offset - 0xb + 1]; } else if (0x30 <= offset && offset <= 0x3f) { r = &constrom[offset - 0x30 + 6]; } else { /* return 0.0 for anything else (incl. valid offset 0xf) */ r = &constrom[5]; } CPYFPN(fp, r); return fp; } int fpu_emul_fmovecr(fe, insn) struct fpemu *fe; struct instruction *insn; { int dstreg, offset; u_int *fpreg; dstreg = (insn->is_word1 >> 7) & 0x7; offset = insn->is_word1 & 0x7F; fpreg = &(fe->fe_fpframe->fpf_regs[0]); (void)fpu_const(&fe->fe_f3, offset); (void)fpu_upd_fpsr(fe, &fe->fe_f3); fpu_implode(fe, &fe->fe_f3, FTYPE_EXT, &fpreg[dstreg * 3]); if (fpu_debug_level & DL_RESULT) { printf(" fpu_emul_fmovecr: result %08x,%08x,%08x to FP%d\n", fpreg[dstreg * 3], fpreg[dstreg * 3 + 1], fpreg[dstreg * 3 + 2], dstreg); } return 0; }