fpu.h
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上传日期:2013-04-10
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- /*
- * Linux/PA-RISC Project (http://www.parisc-linux.org/)
- *
- * Floating-point emulation code
- * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- /*
- * BEGIN_DESC
- *
- * File:
- * @(#) pa/fp/fpu.h $Revision: 1.2 $
- *
- * Purpose:
- * <<please update with a synopis of the functionality provided by this file>>
- *
- *
- * END_DESC
- */
- #ifdef __NO_PA_HDRS
- PA header file -- do not include this header file for non-PA builds.
- #endif
- #ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */
- #define _MACHINE_FPU_INCLUDED
- #if 0
- #ifndef _SYS_STDSYMS_INCLUDED
- # include <sys/stdsyms.h>
- #endif /* _SYS_STDSYMS_INCLUDED */
- #include <machine/pdc/pdc_rqsts.h>
- #endif
- #define PA83_FPU_FLAG 0x00000001
- #define PA89_FPU_FLAG 0x00000002
- #define PA2_0_FPU_FLAG 0x00000010
- #define TIMEX_EXTEN_FLAG 0x00000004
- #define ROLEX_EXTEN_FLAG 0x00000008
- #define COPR_FP 0x00000080 /* Floating point -- Coprocessor 0 */
- #define SFU_MPY_DIVIDE 0x00008000 /* Multiply/Divide __ SFU 0 */
- #define EM_FPU_TYPE_OFFSET 272
- /* version of EMULATION software for COPR,0,0 instruction */
- #define EMULATION_VERSION 4
- /*
- * The only was to differeniate between TIMEX and ROLEX (or PCX-S and PCX-T)
- * is thorough the potential type field from the PDC_MODEL call. The
- * following flags are used at assist this differeniation.
- */
- #define ROLEX_POTENTIAL_KEY_FLAGS PDC_MODEL_CPU_KEY_WORD_TO_IO
- #define TIMEX_POTENTIAL_KEY_FLAGS (PDC_MODEL_CPU_KEY_QUAD_STORE |
- PDC_MODEL_CPU_KEY_RECIP_SQRT)
- #endif /* ! _MACHINE_FPU_INCLUDED */