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