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-rw-r--r--arch/m68k/math-emu/fp_movem.S368
1 files changed, 368 insertions, 0 deletions
diff --git a/arch/m68k/math-emu/fp_movem.S b/arch/m68k/math-emu/fp_movem.S
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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