From ac966f41ebc5a07c5ba469fb0b7b0c88de46b542 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Fri, 1 Feb 1991 15:38:19 +0000
Subject: [PATCH] Added end library and floating point processor support

---
 mach/m68k4/libem/.distr    |   6 +-
 mach/m68k4/libem/LIST      |   2 +-
 mach/m68k4/libem/Makefile  |  20 ++-
 mach/m68k4/libem/edata.s   |   9 ++
 mach/m68k4/libem/em_end.s  |  22 +++
 mach/m68k4/libem/end.s     |  13 +-
 mach/m68k4/libem/etext.s   |   9 ++
 mach/m68k4/libem/fp68881.s | 299 +++++++++++++++++++++++++++++++++++++
 8 files changed, 360 insertions(+), 20 deletions(-)
 create mode 100644 mach/m68k4/libem/edata.s
 create mode 100644 mach/m68k4/libem/em_end.s
 create mode 100644 mach/m68k4/libem/etext.s
 create mode 100644 mach/m68k4/libem/fp68881.s

diff --git a/mach/m68k4/libem/.distr b/mach/m68k4/libem/.distr
index 8702677e5..ce020b7c5 100644
--- a/mach/m68k4/libem/.distr
+++ b/mach/m68k4/libem/.distr
@@ -1,5 +1,9 @@
 LIST
 Makefile
 compmodule
-libem_s.a
+em_end.s
+etext.s
+edata.s
 end.s
+libem_s.a
+READ_ME
diff --git a/mach/m68k4/libem/LIST b/mach/m68k4/libem/LIST
index d82cc1b50..e4a0f38d6 100644
--- a/mach/m68k4/libem/LIST
+++ b/mach/m68k4/libem/LIST
@@ -26,7 +26,7 @@ shp.s
 sig.s
 cms.s
 fat.s
-fakfp.s
+fp68881.s
 trp.s
 dia.s
 dvu.s
diff --git a/mach/m68k4/libem/Makefile b/mach/m68k4/libem/Makefile
index 0c32073b4..5457c453c 100644
--- a/mach/m68k4/libem/Makefile
+++ b/mach/m68k4/libem/Makefile
@@ -1,27 +1,33 @@
 # $Header$
 MACH=m68k4
-all:            libem_o.a end.o
+ASAR=aal
+all:		libem_o.a end.a
 
 install: 	all
 		../../install libem_o.a tail_em
-		../../install end.o end_em
+		../../install end.a end_em
 
 cmp:		all
 		-../../compare libem_o.a tail_em
-		-../../compare end.o end_em
+		-../../compare end.a end_em
 
-end.o:		end.s
+end.a:		em_end.s etext.s edata.s end.s
+		$(MACH) -I../../../h -c em_end.s
+		$(MACH) -I../../../h -c edata.s
+		$(MACH) -I../../../h -c etext.s
 		$(MACH) -I../../../h -c end.s
+		$(ASAR) cr end.a em_end.o etext.o edata.o end.o
 
 libem_o.a:	libem_s.a
-		ASAR=aal ; export ASAR ;\
+		ASAR=$(ASAR) ; export ASAR ;\
 		march . libem_o.a
 
 clean:
-		rm -f *.o libem_o.a
+		rm -f *.o libem_o.a end.a
+
 opr :
 		make pr | opr
 
 pr:
 		@arch pv libem_s.a | pr -h `pwd`/libem_s.a
-		@pr `pwd`/end.s
+		@pr `pwd`/em_end.s `pwd`/edata.s `pwd`/etext.s `pwd`/end.s
diff --git a/mach/m68k4/libem/edata.s b/mach/m68k4/libem/edata.s
new file mode 100644
index 000000000..f53adc109
--- /dev/null
+++ b/mach/m68k4/libem/edata.s
@@ -0,0 +1,9 @@
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+.define	_edata
+.sect .data
+	.align 4
+	.sect .data
+_edata:
diff --git a/mach/m68k4/libem/em_end.s b/mach/m68k4/libem/em_end.s
new file mode 100644
index 000000000..a062368da
--- /dev/null
+++ b/mach/m68k4/libem/em_end.s
@@ -0,0 +1,22 @@
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+.define	endtext,enddata,endbss,__end
+.sect .text
+	.align 4
+.sect .rom
+	.align 4
+.sect .data
+	.align 4
+.sect .bss
+	.align 4
+.sect .end ! only for declaration of _end, __end and endbss.
+
+	.sect .text
+endtext:
+	.sect .data
+enddata:
+	.sect .end
+__end:
+endbss:
diff --git a/mach/m68k4/libem/end.s b/mach/m68k4/libem/end.s
index 37e1cef2c..93a1e6e00 100644
--- a/mach/m68k4/libem/end.s
+++ b/mach/m68k4/libem/end.s
@@ -1,16 +1,7 @@
-.define	endtext,enddata,endbss,_etext,_edata,_end
 .sect .text
 .sect .rom
 .sect .data
 .sect .bss
-.sect .end ! only for declaration of _end and endbss.
-
-	.sect .text
-endtext:
-_etext:
-	.sect .data
-enddata:
-_edata:
-	.sect .end
+.define	_end
+.sect .end ! only for declaration of _end, __end and endbss.
 _end:
-endbss:
diff --git a/mach/m68k4/libem/etext.s b/mach/m68k4/libem/etext.s
new file mode 100644
index 000000000..8c7453cb4
--- /dev/null
+++ b/mach/m68k4/libem/etext.s
@@ -0,0 +1,9 @@
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+.define	_etext
+.sect .text
+	.align 4
+	.sect .text
+_etext:
diff --git a/mach/m68k4/libem/fp68881.s b/mach/m68k4/libem/fp68881.s
new file mode 100644
index 000000000..5ce44c5c8
--- /dev/null
+++ b/mach/m68k4/libem/fp68881.s
@@ -0,0 +1,299 @@
+.define .adf4, .adf8, .sbf4, .sbf8, .mlf4, .mlf8, .dvf4, .dvf8
+.define .ngf4, .ngf8, .fif4, .fif8, .fef4, .fef8
+.define .cif4, .cif8, .cuf4, .cuf8, .cfi, .cfu, .cff4, .cff8
+.define .cmf4, .cmf8
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+
+!	$Header$
+
+!	Implement interface to floating point package for M68881
+
+	.sect .text
+.adf4:
+	move.l	(sp)+,a0
+	fmove.s (sp),fp0
+	fadd.s	4(sp),fp0
+	fmove.s	fp0,4(sp)
+	jmp	(a0)
+
+.adf8:
+	move.l	(sp)+,a0
+	fmove.d (sp),fp0
+	fadd.d	8(sp),fp0
+	fmove.d	fp0,8(sp)
+	jmp	(a0)
+
+.sbf4:
+	move.l	(sp)+,a0
+	fmove.s (sp),fp0
+	fmove.s	4(sp),fp1
+	fsub	fp0,fp1
+	fmove.s	fp1,4(sp)
+	jmp	(a0)
+
+.sbf8:
+	move.l	(sp)+,a0
+	fmove.d (sp),fp0
+	fmove.d	8(sp),fp1
+	fsub	fp0,fp1
+	fmove.d	fp1,8(sp)
+	jmp	(a0)
+
+.mlf4:
+	move.l	(sp)+,a0
+	fmove.s (sp),fp0
+	fmul.s	4(sp),fp0
+	fmove.s	fp0,4(sp)
+	jmp	(a0)
+
+.mlf8:
+	move.l	(sp)+,a0
+	fmove.d (sp),fp0
+	fmul.d	8(sp),fp0
+	fmove.d	fp0,8(sp)
+	jmp	(a0)
+
+.dvf4:
+	move.l	(sp)+,a0
+	fmove.s (sp),fp0
+	fmove.s	4(sp),fp1
+	fdiv	fp0,fp1
+	fmove.s	fp1,4(sp)
+	jmp	(a0)
+
+.dvf8:
+	move.l	(sp)+,a0
+	fmove.d (sp),fp0
+	fmove.d	8(sp),fp1
+	fdiv	fp0,fp1
+	fmove.d	fp1,8(sp)
+	jmp	(a0)
+
+.ngf4:
+	fmove.s	4(sp),fp0
+	fneg	fp0
+	fmove.s	fp0,4(sp)
+	rts
+
+.ngf8:
+	fmove.d	4(sp),fp0
+	fneg	fp0
+	fmove.d	fp0,4(sp)
+	rts
+
+.fif4:
+	move.l	(sp)+,a0
+	move.l	(sp),a1
+	fmove.s	4(sp),fp0
+	fmove.s	8(sp),fp1
+	fmul	fp0,fp1
+	fintrz	fp1,fp0
+	fsub	fp0,fp1
+	fmove.s	fp1,4(a1)
+	fmove.s	fp0,(a1)
+	jmp	(a0)
+
+.fif8:
+	move.l	(sp)+,a0
+	move.l	(sp),a1
+	fmove.d	4(sp),fp0
+	fmove.d	12(sp),fp1
+	fmul	fp0,fp1
+	fintrz	fp1,fp0
+	fsub	fp0,fp1
+	fmove.d	fp1,8(a1)
+	fmove.d	fp0,(a1)
+	jmp	(a0)
+
+.fef4:
+	move.l	(sp)+,a0
+	move.l	(sp),a1
+	fmove.s	4(sp),fp0
+	fgetexp	fp0,fp1
+	fmove.l	fpsr,d0
+	and.l	#0x2000,d0	! set if Infinity
+	beq	1f
+	move.l	#129,(a1)
+	fmove.s	4(sp),fp0
+	fblt	2f
+	move.l	#0x3f000000,4(a1)
+	jmp	(a0)
+2:
+	move.l	#0xbf000000,4(a1)
+	jmp	(a0)
+1:
+	fmove.l	fp1,d0
+	add.l	#1,d0
+	fgetman	fp0
+	fbne	1f
+	clr.l	d0
+	bra	2f
+1:
+	fmove.l	#2,fp1
+	fdiv	fp1,fp0
+2:
+	fmove.s	fp0,4(a1)
+	move.l	d0,(a1)
+	jmp	(a0)
+
+.fef8:
+	move.l	(sp)+,a0
+	move.l	(sp),a1
+	fmove.d	4(sp),fp0
+	fgetexp	fp0,fp1
+	fmove.l	fpsr,d0
+	and.l	#0x2000,d0	! set if Infinity
+	beq	1f
+	move.l	#1025,(a1)
+	fmove.d	4(sp),fp0
+	fblt	2f
+	move.l	#0x3fe00000,4(a1)
+	clr.l	8(a1)
+	jmp	(a0)
+2:
+	move.l	#0xbfe00000,4(a1)
+	clr.l	8(a1)
+	jmp	(a0)
+1:
+	fmove.l	fp1,d0
+	add.l	#1,d0
+	fgetman	fp0
+	fbne	1f
+	clr.l	d0
+	bra	2f
+1:
+	fmove.l	#2,fp1
+	fdiv	fp1,fp0
+2:
+	fmove.d	fp0,4(a1)
+	move.l	d0,(a1)
+	jmp	(a0)
+
+.cif4:
+	move.l	(sp)+,a0
+	fmove.l	4(sp),fp0
+	fmove.s	fp0,4(sp)
+	jmp	(a0)
+
+.cif8:
+	move.l	(sp)+,a0
+	fmove.l	4(sp),fp0
+	fmove.d	fp0,(sp)
+	jmp	(a0)
+
+.cuf4:
+	move.l	(sp)+,a0
+	fmove.l	4(sp),fp0
+	tst.l	4(sp)
+	bge	1f
+	fsub.l	#-2147483648,fp0
+	fsub.l	#-2147483648,fp0
+1:
+	fmove.s	fp0,4(sp)
+	jmp	(a0)
+
+.cuf8:
+	move.l	(sp)+,a0
+	fmove.l	4(sp),fp0
+	tst.l	4(sp)
+	bge	1f
+	fsub.l	#-2147483648,fp0
+	fsub.l	#-2147483648,fp0
+1:
+	fmove.d	fp0,(sp)
+	jmp	(a0)
+
+.cfi:
+	move.l	(sp)+,a0
+	move.l	4(sp),d0
+	cmp.l	#4,d0
+	bne	1f
+	fmove.s	8(sp),fp0
+	fintrz	fp0,fp0
+	fmove.l	fp0,8(sp)
+	jmp	(a0)
+1:
+	fmove.d	8(sp),fp0
+	fintrz	fp0,fp0
+	fmove.l	fp0,12(sp)
+	jmp	(a0)
+
+.cfu:
+	move.l	(sp)+,a0
+	move.l	4(sp),d0
+	cmp.l	#4,d0
+	bne	1f
+	fmove.s	8(sp),fp0
+	fabs	fp0
+	cmp.l	#0x4f000000,8(sp)
+	bge	2f
+	fintrz	fp0,fp0
+	fmove.l	fp0,8(sp)
+	jmp	(a0)
+2:
+	fadd.l	#-2147483648,fp0
+	fintrz	fp0,fp0
+	fmove.l	fp0,d0
+	bchg	#31,d0
+	move.l	d0,8(sp)
+	jmp	(a0)
+1:
+	fmove.d	8(sp),fp0
+	fabs	fp0
+	cmp.l	#0x41e00000,8(sp)
+	bge	1f
+	fintrz	fp0,fp0
+	fmove.l	fp0,12(sp)
+	jmp	(a0)
+1:
+	fadd.l	#-2147483648,fp0
+	fintrz	fp0,fp0
+	fmove.l	fp0,d0
+	bchg	#31,d0
+	move.l	d0,12(sp)
+	jmp	(a0)
+
+.cff4:
+	move.l	(sp)+,a0
+	fmove.d	(sp),fp0
+	fmove.s	fp0,4(sp)
+	jmp	(a0)
+
+.cff8:
+	move.l	(sp)+,a0
+	fmove.s	(sp),fp0
+	fmove.d	fp0,(sp)
+	jmp	(a0)
+
+.cmf4:
+	move.l	(sp)+,a0
+	clr.l	d0
+	fmove.s	(sp),fp0
+	fmove.s	4(sp),fp1
+	fcmp	fp0,fp1
+	fbeq	2f
+	fblt	1f
+	add.l	#1,d0
+	jmp	(a0)
+1:
+	sub.l	#1,d0
+2:
+	jmp	(a0)
+
+.cmf8:
+	move.l	(sp)+,a0
+	clr.l	d0
+	fmove.d	(sp),fp0
+	fmove.d	8(sp),fp1
+	fcmp	fp0,fp1
+	fbeq	2f
+	fblt	1f
+	add.l	#1,d0
+	jmp	(a0)
+1:
+	sub.l	#1,d0
+2:
+	jmp	(a0)
-- 
2.34.1