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111 lines
3.5 KiB
Plaintext
111 lines
3.5 KiB
Plaintext
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;
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; File: FPEmulation.a
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;
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; Contains: Main file where FPU Emulation Package is assembled from
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; - also contains only EXPORTed entry point (InstallFPSP).
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;
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; Originally Written by: Motorola Inc.
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; Adapted to Apple/MPW: Jon Okada
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;
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; Copyright: <09> 1990-1993 by Apple Computer, Inc., all rights reserved.
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;
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; This file is used in these builds: Mac32
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;
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; Change History (most recent first):
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;
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; <SM2> 2/3/93 CSS Update from Horror:
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; <H2> 11/18/92 BG Added a check to the InstallFPSP code so that it does NOT
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; install itself if running on an 68LC040.
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; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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; Pre-Horror ROM comments begin here.
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; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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; <3> 3/30/91 BG New package based on Motorola Release 1.0 with numerous bug
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; fixes added
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; <2> 2/1/91 BG Added code to go to the original system F-Line handler if the
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; FPU emulation package does not know what to do with a given
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; F-Line instruction that it encounters.
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; <1> 12/14/90 BG First checked into TERROR/BBS.
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MACHINE MC68040
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BLANKS OFF
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INCLUDE 'fpsp.h'
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INCLUDE 'SysEqu.a' ; get the names of various Exception Vectors
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PrNonPortable EQU 1 ; needed to get HWCfgFlags to be defined in Private.a <H2>
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INCLUDE 'Private.a' ; get definition of HWCfgFlags <H2>
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INCLUDE 'HardwarePrivateEqu.a'; get definition of hwCbFPU, etc. <H2>
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; ________________________________________________________________________________
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;
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; subroutine InstallFPSP()---installs MC68040 FPSP (MC68881/2 emulation) and
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; dummy user handlers.
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; uses: a0/a1.
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; ________________________________________________________________________________
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InstallFPSP PROC EXPORT
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ALIGN 16
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; Don't install on 040s that don't have FPUs. <H2>
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btst.b #hwCbFPU-8,HWCfgFlags; FPU installed on board? <H2>
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beq.s @exit ; exit if we don't have a HW FPU <H2>
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movec.l VBR,a0 ; get vector base register
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move.l Line1111(a0),(FLINE_VEC040).W; save original vector for unknown F-Lines <T2>
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lea fline,a1
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move.l a1,Line1111(a0) ; vector FLINE to emulation code
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lea bsun,a1
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move.l a1,BSUNVector(a0) ; vector BSUN to emulation code
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lea unfl,a1
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move.l a1,UNFLVector(a0) ; vector UNFL to emulation code
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lea operr,a1
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move.l a1,OPERRVector(a0) ; vector OPERR to emulation code
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lea ovfl,a1
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move.l a1,OVFLVector(a0) ; vector OVFL to emulation code
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lea snan,a1
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move.l a1,SNANVector(a0) ; vector SNAN to emulation code
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lea unsupp,a1
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move.l a1,UNIMPDTVector(a0); vector UNSUPP to emulation code
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@exit ; <H2>
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RTS
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; ________________________________________________________________________________
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;
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; All of the FPU Emulation package is included below in one big assembly.
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INCLUDE 'FPSPMain.a'
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INCLUDE 'XBSUN.a'
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INCLUDE 'XOpErr.a'
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INCLUDE 'XOvfl.a'
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INCLUDE 'XSNAN.a'
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INCLUDE 'XUnfl.a'
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INCLUDE 'XFLine.a'
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INCLUDE 'XUnSupp.a'
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INCLUDE 'XUnImp.a'
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INCLUDE 'BugFix.a' ; special fix for D43B hardware bug
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INCLUDE 'GenExcept.a'
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INCLUDE 'GetOp.a'
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INCLUDE 'DecBin.a'
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INCLUDE 'XStore.a'
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INCLUDE 'ResFunc.a'
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INCLUDE 'Round.a'
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INCLUDE 'BinDec.a'
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INCLUDE 'Util.a'
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INCLUDE 'KernelEx.a'
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INCLUDE 'DoFunc.a'
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INCLUDE 'GetEM.a'
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INCLUDE 'Int.a'
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INCLUDE 'MoveCR.a'
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INCLUDE 'RemMod.a'
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INCLUDE 'Scale.a'
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INCLUDE 'Hyperbolic.a'
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INCLUDE 'Trig.a'
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INCLUDE 'Power.a'
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INCLUDE 'InvTrig.a'
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INCLUDE 'Log.a'
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INCLUDE 'Constants.a'
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END
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