patch-2.2.18 linux/arch/m68k/math-emu/fp_movem.S

• Lines: 369
• Date: Fri Oct 13 23:36:54 2000
• Orig file: v2.2.17/arch/m68k/math-emu/fp_movem.S
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/arch/m68k/math-emu/fp_movem.S linux/arch/m68k/math-emu/fp_movem.S
@@ -0,0 +1,368 @@
+/*
+ * 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 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