arch/m68k/math-emu/fp_movem.S - maze/linux - Git at Google

 /*
  * 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
	/*
	* 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