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Fail* directories reorganized, Code-cleanup (-> coding-style), Typos+comments fixed.

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git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1321 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
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adrian
2012-06-08 20:09:43 +00:00
parent d474a5b952
commit 2575604b41
866 changed files with 1848 additions and 1879 deletions
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69
simulators/bochs/fpu/status_w.h Normal file
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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2003-2009 Stanislav Shwartsman
// Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
#ifndef _STATUS_H_
#define _STATUS_H_
/* Status Word */
#define FPU_SW_Backward (0x8000) /* backward compatibility */
#define FPU_SW_C3 (0x4000) /* condition bit 3 */
#define FPU_SW_Top (0x3800) /* top of stack */
#define FPU_SW_C2 (0x0400) /* condition bit 2 */
#define FPU_SW_C1 (0x0200) /* condition bit 1 */
#define FPU_SW_C0 (0x0100) /* condition bit 0 */
#define FPU_SW_Summary (0x0080) /* exception summary */
#define FPU_SW_Stack_Fault (0x0040) /* stack fault */
#define FPU_SW_Precision (0x0020) /* loss of precision */
#define FPU_SW_Underflow (0x0010) /* underflow */
#define FPU_SW_Overflow (0x0008) /* overflow */
#define FPU_SW_Zero_Div (0x0004) /* divide by zero */
#define FPU_SW_Denormal_Op (0x0002) /* denormalized operand */
#define FPU_SW_Invalid (0x0001) /* invalid operation */
#define FPU_SW_CC (FPU_SW_C0|FPU_SW_C1|FPU_SW_C2|FPU_SW_C3)
#define FPU_SW_Exceptions_Mask (0x027f) /* status word exceptions bit mask */
/* Exception flags: */
#define FPU_EX_Precision (0x0020) /* loss of precision */
#define FPU_EX_Underflow (0x0010) /* underflow */
#define FPU_EX_Overflow (0x0008) /* overflow */
#define FPU_EX_Zero_Div (0x0004) /* divide by zero */
#define FPU_EX_Denormal (0x0002) /* denormalized operand */
#define FPU_EX_Invalid (0x0001) /* invalid operation */
/* Special exceptions: */
#define FPU_EX_Stack_Overflow (0x0041|FPU_SW_C1) /* stack overflow */
#define FPU_EX_Stack_Underflow (0x0041) /* stack underflow */
/* precision control */
#define FPU_EX_Precision_Lost_Up (EX_Precision | SW_C1)
#define FPU_EX_Precision_Lost_Dn (EX_Precision)
#define setcc(cc) \
FPU_PARTIAL_STATUS = (FPU_PARTIAL_STATUS & ~(FPU_SW_CC)) | ((cc) & FPU_SW_CC)
#define clear_C1() { FPU_PARTIAL_STATUS &= ~FPU_SW_C1; }
#define clear_C2() { FPU_PARTIAL_STATUS &= ~FPU_SW_C2; }
#endif