| /* |
| * 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 |
