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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
|
|
