70 lines
3.0 KiB
C
70 lines
3.0 KiB
C
/////////////////////////////////////////////////////////////////////////
|
|
// $Id: status_w.h,v 1.14 2009-10-14 20:45:29 sshwarts Exp $
|
|
/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// 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
|