369 lines
8.0 KiB
ArmAsm
369 lines
8.0 KiB
ArmAsm
/*
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* fp_movem.S
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*
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* Copyright Roman Zippel, 1997. 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, and the entire permission notice in its entirety,
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* including the disclaimer of warranties.
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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. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* ALTERNATIVELY, this product may be distributed under the terms of
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* the GNU General Public License, in which case the provisions of the GPL are
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* required INSTEAD OF the above restrictions. (This clause is
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* necessary due to a potential bad interaction between the GPL and
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* the restrictions contained in a BSD-style copyright.)
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fp_emu.h"
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#include "fp_decode.h"
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| set flags for decode macros for fmovem
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do_fmovem=1
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.globl fp_fmovem_fp, fp_fmovem_cr
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| %d1 contains the mask and count of the register list
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| for other register usage see fp_decode.h
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fp_fmovem_fp:
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printf PDECODE,"fmovem.x "
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| get register list and count them
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btst #11,%d2
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jne 1f
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bfextu %d2{#24,#8},%d0 | static register list
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jra 2f
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1: bfextu %d2{#25,#3},%d0 | dynamic register list
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jsr fp_get_data_reg
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2: move.l %d0,%d1
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swap %d1
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jra 2f
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1: addq.w #1,%d1 | count the # of registers in
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2: lsr.b #1,%d0 | register list and keep it in %d1
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jcs 1b
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jne 2b
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printf PDECODE,"#%08x",1,%d1
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#ifdef FPU_EMU_DEBUG
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btst #12,%d2
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jne 1f
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printf PDECODE,"-" | decremental move
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jra 2f
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1: printf PDECODE,"+" | incremental move
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2: btst #13,%d2
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jeq 1f
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printf PDECODE,"->" | fpu -> cpu
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jra 2f
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1: printf PDECODE,"<-" | fpu <- cpu
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2:
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#endif
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| decode address mode
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fp_decode_addr_mode
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.long fp_ill, fp_ill
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.long fpr_indirect, fpr_postinc
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.long fpr_predecr, fpr_disp16
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.long fpr_extmode0, fpr_extmode1
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| addressing mode: address register indirect
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fpr_indirect:
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fp_mode_addr_indirect
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jra fpr_do_movem
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| addressing mode: address register indirect with postincrement
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fpr_postinc:
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fp_mode_addr_indirect_postinc
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jra fpr_do_movem
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fpr_predecr:
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fp_mode_addr_indirect_predec
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jra fpr_do_movem
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| addressing mode: address register/programm counter indirect
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| with 16bit displacement
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fpr_disp16:
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fp_mode_addr_indirect_disp16
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jra fpr_do_movem
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fpr_extmode0:
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fp_mode_addr_indirect_extmode0
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jra fpr_do_movem
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fpr_extmode1:
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fp_decode_addr_reg
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jmp ([0f:w,%pc,%d0*4])
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.align 4
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0:
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.long fpr_absolute_short, fpr_absolute_long
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.long fpr_disp16, fpr_extmode0
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.long fp_ill, fp_ill
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.long fp_ill, fp_ill
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fpr_absolute_short:
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fp_mode_abs_short
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jra fpr_do_movem
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fpr_absolute_long:
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fp_mode_abs_long
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| jra fpr_do_movem
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fpr_do_movem:
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swap %d1 | get fpu register list
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lea (FPD_FPREG,FPDATA),%a1
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moveq #12,%d0
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btst #12,%d2
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jne 1f
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lea (-12,%a1,%d0*8),%a1
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neg.l %d0
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1: btst #13,%d2
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jne 4f
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| move register from memory into fpu
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jra 3f
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1: printf PMOVEM,"(%p>%p)",2,%a0,%a1
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getuser.l (%a0)+,%d2,fp_err_ua1,%a0
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lsr.l #8,%d2
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lsr.l #7,%d2
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lsr.w #1,%d2
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move.l %d2,(%a1)+
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getuser.l (%a0)+,%d2,fp_err_ua1,%a0
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move.l %d2,(%a1)+
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getuser.l (%a0),%d2,fp_err_ua1,%a0
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move.l %d2,(%a1)
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subq.l #8,%a0
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subq.l #8,%a1
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add.l %d0,%a0
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2: add.l %d0,%a1
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3: lsl.b #1,%d1
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jcs 1b
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jne 2b
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jra 5f
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| move register from fpu into memory
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1: printf PMOVEM,"(%p>%p)",2,%a1,%a0
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move.l (%a1)+,%d2
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lsl.w #1,%d2
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lsl.l #7,%d2
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lsl.l #8,%d2
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putuser.l %d2,(%a0)+,fp_err_ua1,%a0
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move.l (%a1)+,%d2
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putuser.l %d2,(%a0)+,fp_err_ua1,%a0
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move.l (%a1),%d2
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putuser.l %d2,(%a0),fp_err_ua1,%a0
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subq.l #8,%a1
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subq.l #8,%a0
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add.l %d0,%a0
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2: add.l %d0,%a1
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4: lsl.b #1,%d1
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jcs 1b
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jne 2b
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5:
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printf PDECODE,"\n"
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#if 0
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lea (FPD_FPREG,FPDATA),%a0
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printf PMOVEM,"fp:"
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printx PMOVEM,%a0@(0)
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printx PMOVEM,%a0@(12)
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printf PMOVEM,"\n "
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printx PMOVEM,%a0@(24)
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printx PMOVEM,%a0@(36)
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printf PMOVEM,"\n "
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printx PMOVEM,%a0@(48)
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printx PMOVEM,%a0@(60)
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printf PMOVEM,"\n "
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printx PMOVEM,%a0@(72)
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printx PMOVEM,%a0@(84)
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printf PMOVEM,"\n"
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#endif
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jra fp_end
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| set flags for decode macros for fmovem control register
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do_fmovem=1
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do_fmovem_cr=1
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fp_fmovem_cr:
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printf PDECODE,"fmovem.cr "
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| get register list and count them
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bfextu %d2{#19,#3},%d0
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move.l %d0,%d1
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swap %d1
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jra 2f
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1: addq.w #1,%d1
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2: lsr.l #1,%d0
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jcs 1b
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jne 2b
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printf PDECODE,"#%08x",1,%d1
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#ifdef FPU_EMU_DEBUG
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btst #13,%d2
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jeq 1f
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printf PDECODE,"->" | fpu -> cpu
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jra 2f
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1: printf PDECODE,"<-" | fpu <- cpu
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2:
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#endif
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| decode address mode
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fp_decode_addr_mode
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.long fpc_data, fpc_addr
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.long fpc_indirect, fpc_postinc
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.long fpc_predecr, fpc_disp16
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.long fpc_extmode0, fpc_extmode1
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fpc_data:
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fp_mode_data_direct
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move.w %d0,%d1
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bfffo %d2{#19,#3},%d0
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sub.w #19,%d0
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lea (FPD_FPCR,FPDATA,%d0.w*4),%a1
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btst #13,%d2
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jne 1f
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move.w %d1,%d0
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jsr fp_get_data_reg
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move.l %d0,(%a1)
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jra fpc_movem_fin
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1: move.l (%a1),%d0
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jsr fp_put_data_reg
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jra fpc_movem_fin
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fpc_addr:
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fp_decode_addr_reg
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printf PDECODE,"a%d",1,%d0
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btst #13,%d2
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jne 1f
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jsr fp_get_addr_reg
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move.l %a0,(FPD_FPIAR,FPDATA)
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jra fpc_movem_fin
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1: move.l (FPD_FPIAR,FPDATA),%a0
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jsr fp_put_addr_reg
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jra fpc_movem_fin
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fpc_indirect:
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fp_mode_addr_indirect
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jra fpc_do_movem
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fpc_postinc:
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fp_mode_addr_indirect_postinc
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jra fpc_do_movem
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fpc_predecr:
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fp_mode_addr_indirect_predec
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jra fpc_do_movem
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fpc_disp16:
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fp_mode_addr_indirect_disp16
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jra fpc_do_movem
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fpc_extmode0:
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fp_mode_addr_indirect_extmode0
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jra fpc_do_movem
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fpc_extmode1:
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fp_decode_addr_reg
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jmp ([0f:w,%pc,%d0*4])
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.align 4
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0:
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.long fpc_absolute_short, fpc_absolute_long
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.long fpc_disp16, fpc_extmode0
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.long fpc_immediate, fp_ill
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.long fp_ill, fp_ill
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fpc_absolute_short:
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fp_mode_abs_short
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jra fpc_do_movem
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fpc_absolute_long:
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fp_mode_abs_long
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jra fpc_do_movem
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fpc_immediate:
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fp_get_pc %a0
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lea (%a0,%d1.w*4),%a1
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fp_put_pc %a1
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printf PDECODE,"#imm"
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| jra fpc_do_movem
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#if 0
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swap %d1
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lsl.l #5,%d1
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lea (FPD_FPCR,FPDATA),%a0
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jra 3f
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1: move.l %d0,(%a0)
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2: addq.l #4,%a0
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3: lsl.b #1,%d1
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jcs 1b
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jne 2b
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jra fpc_movem_fin
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#endif
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fpc_do_movem:
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swap %d1 | get fpu register list
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lsl.l #5,%d1
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lea (FPD_FPCR,FPDATA),%a1
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1: btst #13,%d2
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jne 4f
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| move register from memory into fpu
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jra 3f
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1: printf PMOVEM,"(%p>%p)",2,%a0,%a1
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getuser.l (%a0)+,%d0,fp_err_ua1,%a0
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move.l %d0,(%a1)
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2: addq.l #4,%a1
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3: lsl.b #1,%d1
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jcs 1b
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jne 2b
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jra fpc_movem_fin
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| move register from fpu into memory
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1: printf PMOVEM,"(%p>%p)",2,%a1,%a0
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move.l (%a1),%d0
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putuser.l %d0,(%a0)+,fp_err_ua1,%a0
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2: addq.l #4,%a1
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4: lsl.b #1,%d1
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jcs 1b
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jne 2b
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fpc_movem_fin:
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and.l #0x0000fff0,(FPD_FPCR,FPDATA)
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and.l #0x0ffffff8,(FPD_FPSR,FPDATA)
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move.l (FPD_FPCR,FPDATA),%d0
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lsr.l #4,%d0
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moveq #3,%d1
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and.l %d0,%d1
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move.w %d1,(FPD_RND,FPDATA)
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lsr.l #2,%d0
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moveq #3,%d1
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and.l %d0,%d1
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move.w %d1,(FPD_PREC,FPDATA)
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printf PDECODE,"\n"
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#if 0
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printf PMOVEM,"fpcr : %08x\n",1,FPDATA@(FPD_FPCR)
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printf PMOVEM,"fpsr : %08x\n",1,FPDATA@(FPD_FPSR)
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printf PMOVEM,"fpiar: %08x\n",1,FPDATA@(FPD_FPIAR)
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clr.l %d0
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move.w (FPD_PREC,FPDATA),%d0
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printf PMOVEM,"prec : %04x\n",1,%d0
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move.w (FPD_RND,FPDATA),%d0
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printf PMOVEM,"rnd : %04x\n",1,%d0
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#endif
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jra fp_end
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