18b2f7e6a1
by Eduardo Horvath and Simon Burge of Wasabi Systems.
IBM 4xx series CPU features:
- New pmap and revised trap handler.
- Support on-chip timers, PCI controller, UARTs
- Framework for on-chip ethernet and watchdog timer.
General PowerPC features:
- Add in-kernel PPC floating point emulation
- New in{,4}_cksum that is between 1.5 and 5 times faster than the
old version depending on CPU type.
General changes:
- Kernel support for generic dbsym-style symbols.
82 lines
3.7 KiB
C
82 lines
3.7 KiB
C
/* $NetBSD: fpu.h,v 1.4 2001/06/13 06:01:48 simonb Exp $ */
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/*-
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* Copyright (C) 1996 Wolfgang Solfrank.
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* Copyright (C) 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_FPU_H_
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#define _MACHINE_FPU_H_
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#define FPSCR_FX 0x80000000 /* Exception Summary */
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#define FPSCR_FEX 0x40000000 /* Enabled Exception Summary */
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#define FPSCR_VX 0x20000000 /* Invalid Operation Exception Summary */
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#define FPSCR_OX 0x10000000 /* Overflow Exception */
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#define FPSCR_UX 0x08000000 /* Undrflow Exception */
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#define FPSCR_ZX 0x04000000 /* Zero Divide Exception */
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#define FPSCR_XX 0x02000000 /* Inexact Exception */
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#define FPSCR_VXSNAN 0x01000000 /* Invalid Op (NAN) */
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#define FPSCR_VXISI 0x00800000 /* Invalid Op (INF-INF) */
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#define FPSCR_VXIDI 0x00400000 /* Invalid Op (INF/INF) */
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#define FPSCR_VXZDZ 0x00200000 /* Invalid Op (0/0) */
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#define FPSCR_VXIMZ 0x00100000 /* Invalid Op (INFx0) */
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#define FPSCR_VXVC 0x00080000 /* Invalid Compare Op */
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#define FPSCR_FR 0x00040000 /* Fraction Rounded */
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#define FPSCR_FI 0x00020000 /* Fraction Inexact */
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#define FPSCR_FPRF 0x0001f000
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#define FPSCR_C 0x00010000 /* FP Class Descriptor */
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#define FPSCR_FPCC 0x0000f000
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#define FPSCR_FL 0x00008000 /* < */
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#define FPSCR_FG 0x00004000 /* > */
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#define FPSCR_FE 0x00002000 /* == */
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#define FPSCR_FU 0x00001000 /* unordered */
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#define FPSCR_VXSOFT 0x00000400 /* Software Invalid Exception */
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#define FPSCR_VXSQRT 0x00000200 /* Invalid Sqrt Exception */
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#define FPSCR_VXCVI 0x00000100 /* Invalid Op Integer Cvt Exception */
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#define FPSCR_VE 0x00000080 /* Invalid Op Exception Enable */
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#define FPSCR_OE 0x00000040 /* Overflow Exception Enable */
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#define FPSCR_UE 0x00000020 /* Underflow Exception Enable */
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#define FPSCR_ZE 0x00000010 /* Zero Divide Exception Enable */
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#define FPSCR_XE 0x00000008 /* Inexact Exception Enable */
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#define FPSCR_NI 0x00000004 /* Non-IEEE Mode Enable */
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#define FPSCR_RN 0x00000003
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#ifdef _KERNEL
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#include "opt_ppcarch.h"
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/* List of PowerPC architectures that support FPUs. */
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#if defined(PPC_MPC6XX)
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#define PPC_HAVE_FPU
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void enable_fpu(struct proc *p);
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void save_fpu(struct proc *p);
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#endif /* PPC_HAVE_FPU */
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#endif /* _KERNEL */
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#endif /* _MACHINE_FPU_H_ */
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