; $OpenBSD: milli.S,v 1.5 2001/03/29 04:08:20 mickey Exp $
;
; (c) Copyright 1986 HEWLETT-PACKARD COMPANY
;
; To anyone who acknowledges that this file is provided "AS IS"
; without any express or implied warranty:
; permission to use, copy, modify, and distribute this file
; for any purpose is hereby granted without fee, provided that
; the above copyright notice and this notice appears in all
; copies, and that the name of Hewlett-Packard Company not be
; used in advertising or publicity pertaining to distribution
; of the software without specific, written prior permission.
; Hewlett-Packard Company makes no representations about the
; suitability of this software for any purpose.
;
; Standard Hardware Register Definitions for Use with Assembler
; version A.08.06
; - fr16-31 added at Utah
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
; Hardware General Registers
r0: .equ 0
r1: .equ 1
r2: .equ 2
r3: .equ 3
r4: .equ 4
r5: .equ 5
r6: .equ 6
r7: .equ 7
r8: .equ 8
r9: .equ 9
r10: .equ 10
r11: .equ 11
r12: .equ 12
r13: .equ 13
r14: .equ 14
r15: .equ 15
r16: .equ 16
r17: .equ 17
r18: .equ 18
r19: .equ 19
r20: .equ 20
r21: .equ 21
r22: .equ 22
r23: .equ 23
r24: .equ 24
r25: .equ 25
r26: .equ 26
r27: .equ 27
r28: .equ 28
r29: .equ 29
r30: .equ 30
r31: .equ 31
; Hardware Space Registers
sr0: .equ 0
sr1: .equ 1
sr2: .equ 2
sr3: .equ 3
sr4: .equ 4
sr5: .equ 5
sr6: .equ 6
sr7: .equ 7
; Hardware Floating Point Registers
fr0: .equ 0
fr1: .equ 1
fr2: .equ 2
fr3: .equ 3
fr4: .equ 4
fr5: .equ 5
fr6: .equ 6
fr7: .equ 7
fr8: .equ 8
fr9: .equ 9
fr10: .equ 10
fr11: .equ 11
fr12: .equ 12
fr13: .equ 13
fr14: .equ 14
fr15: .equ 15
fr16: .equ 16
fr17: .equ 17
fr18: .equ 18
fr19: .equ 19
fr20: .equ 20
fr21: .equ 21
fr22: .equ 22
fr23: .equ 23
fr24: .equ 24
fr25: .equ 25
fr26: .equ 26
fr27: .equ 27
fr28: .equ 28
fr29: .equ 29
fr30: .equ 30
fr31: .equ 31
; Hardware Control Registers
cr0: .equ 0
rctr: .equ 0 ; Recovery Counter Register
cr8: .equ 8 ; Protection ID 1
pidr1: .equ 8
cr9: .equ 9 ; Protection ID 2
pidr2: .equ 9
cr10: .equ 10
ccr: .equ 10 ; Coprocessor Confiquration Register
cr11: .equ 11
sar: .equ 11 ; Shift Amount Register
cr12: .equ 12
pidr3: .equ 12 ; Protection ID 3
cr13: .equ 13
pidr4: .equ 13 ; Protection ID 4
cr14: .equ 14
iva: .equ 14 ; Interrupt Vector Address
cr15: .equ 15
eiem: .equ 15 ; External Interrupt Enable Mask
cr16: .equ 16
itmr: .equ 16 ; Interval Timer
cr17: .equ 17
pcsq: .equ 17 ; Program Counter Space queue
cr18: .equ 18
pcoq: .equ 18 ; Program Counter Offset queue
cr19: .equ 19
iir: .equ 19 ; Interruption Instruction Register
cr20: .equ 20
isr: .equ 20 ; Interruption Space Register
cr21: .equ 21
ior: .equ 21 ; Interruption Offset Register
cr22: .equ 22
ipsw: .equ 22 ; Interrpution Processor Status Word
cr23: .equ 23
eirr: .equ 23 ; External Interrupt Request
cr24: .equ 24
ppda: .equ 24 ; Physcial Page Directory Address
tr0: .equ 24 ; Temporary register 0
cr25: .equ 25
hta: .equ 25 ; Hash Table Address
tr1: .equ 25 ; Temporary register 1
cr26: .equ 26
tr2: .equ 26 ; Temporary register 2
cr27: .equ 27
tr3: .equ 27 ; Temporary register 3
cr28: .equ 28
tr4: .equ 28 ; Temporary register 4
cr29: .equ 29
tr5: .equ 29 ; Temporary register 5
cr30: .equ 30
tr6: .equ 30 ; Temporary register 6
cr31: .equ 31
tr7: .equ 31 ; Temporary register 7
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
; Procedure Call Convention ~
; Register Definitions for Use with Assembler ~
; version A.08.06 ~
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
; Software Architecture General Registers
rp: .equ r2 ; return pointer
mrp: .equ r31 ; millicode return pointer
ret0: .equ r28 ; return value
ret1: .equ r29 ; return value (high part of double)
sl: .equ r29 ; static link
sp: .equ r30 ; stack pointer
dp: .equ r27 ; data pointer
arg0: .equ r26 ; argument
arg1: .equ r25 ; argument or high part of double argument
arg2: .equ r24 ; argument
arg3: .equ r23 ; argument or high part of double argument
;_____________________________________________________________________________
; Software Architecture Space Registers
; sr0 ; return link form BLE
sret: .equ sr1 ; return value
sarg: .equ sr1 ; argument
; sr4 ; PC SPACE tracker
; sr5 ; process private data
;_____________________________________________________________________________
; Software Architecture Pseudo Registers
previous_sp: .equ 64 ; old stack pointer (locates previous frame)
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
; Standard space and subspace definitions. version A.08.06
; These are generally suitable for programs on HP_UX and HPE.
; Statements commented out are used when building such things as operating
; system kernels.
;;;;;;;;;;;;;;;;
; Additional code subspaces should have ALIGN=8 for an interspace BV
; and should have SORT=24.
;
; For an incomplete executable (program bound to shared libraries),
; sort keys $GLOBAL$ -1 and $GLOBAL$ -2 are reserved for the $DLT$
; and $PLT$ subspaces respectively.
;;;;;;;;;;;;;;;
.text
.EXPORT $$remI,millicode
; .IMPORT cerror
$$remI:
.PROC
.CALLINFO NO_CALLS
.ENTRY
addit,= 0,arg1,r0
add,>= r0,arg0,ret1
sub r0,ret1,ret1
sub r0,arg1,r1
ds r0,r1,r0
or r0,r0,r1
add ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
ds r1,arg1,r1
addc ret1,ret1,ret1
movb,>=,n r1,ret1,remI300
add,< arg1,r0,r0
add,tr r1,arg1,ret1
sub r1,arg1,ret1
remI300: add,>= arg0,r0,r0
sub r0,ret1,ret1
bv r0(r31)
nop
.EXIT
.PROCEND
bit1: .equ 1
bit30: .equ 30
bit31: .equ 31
len2: .equ 2
len4: .equ 4
#if 0
$$dyncall:
.proc
.callinfo NO_CALLS
.export $$dyncall,MILLICODE
bb,>=,n 22,bit30,noshlibs
depi 0,bit31,len2,22
ldw 4(22),19
ldw 0(22),22
noshlibs:
ldsid (22),r1
mtsp r1,sr0
be 0(sr0,r22)
stw rp,-24(sp)
.procend
#endif
$$sh_func_adrs:
.proc
.callinfo NO_CALLS
.export $$sh_func_adrs, millicode
ldo 0(r26),ret1
dep r0,30,1,r26
probew (r26),r31,r22
extru,= r22,31,1,r22
bv r0(r31)
ldws 0(r26),ret1
.procend
temp: .EQU r1
retreg: .EQU ret1 ; r29
.export $$divU,millicode
.import $$divU_3,millicode
.import $$divU_5,millicode
.import $$divU_6,millicode
.import $$divU_7,millicode
.import $$divU_9,millicode
.import $$divU_10,millicode
.import $$divU_12,millicode
.import $$divU_14,millicode
.import $$divU_15,millicode
$$divU:
.proc
.callinfo NO_CALLS
; The subtract is not nullified since it does no harm and can be used
; by the two cases that branch back to "normal".
comib,>= 15,arg1,special_divisor
sub r0,arg1,temp ; clear carry, negate the divisor
ds r0,temp,r0 ; set V-bit to 1
normal:
add arg0,arg0,retreg ; shift msb bit into carry
ds r0,arg1,temp ; 1st divide step, if no carry
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 2nd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 3rd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 4th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 5th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 6th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 7th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 8th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 9th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 10th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 11th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 12th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 13th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 14th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 15th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 16th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 17th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 18th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 19th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 20th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 21st divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 22nd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 23rd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 24th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 25th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 26th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 27th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 28th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 29th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 30th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 31st divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 32nd divide step,
bv 0(r31)
addc retreg,retreg,retreg ; shift last retreg bit into retreg
;_____________________________________________________________________________
; handle the cases where divisor is a small constant or has high bit on
special_divisor:
blr arg1,r0
comib,>,n 0,arg1,big_divisor ; nullify previous instruction
zero_divisor: ; this label is here to provide external visibility
addit,= 0,arg1,0 ; trap for zero dvr
nop
bv 0(r31) ; divisor == 1
copy arg0,retreg
bv 0(r31) ; divisor == 2
extru arg0,30,31,retreg
b,n $$divU_3 ; divisor == 3
nop
bv 0(r31) ; divisor == 4
extru arg0,29,30,retreg
b,n $$divU_5 ; divisor == 5
nop
b,n $$divU_6 ; divisor == 6
nop
b,n $$divU_7 ; divisor == 7
nop
bv 0(r31) ; divisor == 8
extru arg0,28,29,retreg
b,n $$divU_9 ; divisor == 9
nop
b,n $$divU_10 ; divisor == 10
nop
b normal ; divisor == 11
ds r0,temp,r0 ; set V-bit to 1
b,n $$divU_12 ; divisor == 12
nop
b normal ; divisor == 13
ds r0,temp,r0 ; set V-bit to 1
b,n $$divU_14 ; divisor == 14
nop
b,n $$divU_15 ; divisor == 15
nop
;_____________________________________________________________________________
; Handle the case where the high bit is on in the divisor.
; Compute: if( dividend>=divisor) quotient=1; else quotient=0;
; Note: dividend>==divisor iff dividend-divisor does not borrow
; and not borrow iff carry
big_divisor:
sub arg0,arg1,r0
bv 0(r31)
addc r0,r0,retreg
.procend
.end
t2: .EQU r1
; x2 .EQU arg0 ; r26
t1: .EQU arg1 ; r25
; x1 .EQU ret1 ; r29
;_____________________________________________________________________________
$$divide_by_constant:
.PROC
.CALLINFO NO_CALLS
.export $$divide_by_constant,millicode
; Provides a "nice" label for the code covered by the unwind descriptor
; for things like gprof.
$$divI_2:
.EXPORT $$divI_2,MILLICODE
COMCLR,>= arg0,0,0
ADDI 1,arg0,arg0
bv 0(r31)
EXTRS arg0,30,31,ret1
$$divI_4:
.EXPORT $$divI_4,MILLICODE
COMCLR,>= arg0,0,0
ADDI 3,arg0,arg0
bv 0(r31)
EXTRS arg0,29,30,ret1
$$divI_8:
.EXPORT $$divI_8,MILLICODE
COMCLR,>= arg0,0,0
ADDI 7,arg0,arg0
bv 0(r31)
EXTRS arg0,28,29,ret1
$$divI_16:
.EXPORT $$divI_16,MILLICODE
COMCLR,>= arg0,0,0
ADDI 15,arg0,arg0
bv 0(r31)
EXTRS arg0,27,28,ret1
$$divI_3:
.EXPORT $$divI_3,MILLICODE
COMB,<,N arg0,0,$neg3
ADDI 1,arg0,arg0
EXTRU arg0,1,2,ret1
SH2ADD arg0,arg0,arg0
B $pos
ADDC ret1,0,ret1
$neg3:
SUBI 1,arg0,arg0
EXTRU arg0,1,2,ret1
SH2ADD arg0,arg0,arg0
B $neg
ADDC ret1,0,ret1
$$divU_3:
.EXPORT $$divU_3,MILLICODE
ADDI 1,arg0,arg0
ADDC 0,0,ret1
SHD ret1,arg0,30,t1
SH2ADD arg0,arg0,arg0
B $pos
ADDC ret1,t1,ret1
$$divI_5:
.EXPORT $$divI_5,MILLICODE
COMB,<,N arg0,0,$neg5
ADDI 3,arg0,t1
SH1ADD arg0,t1,arg0
B $pos
ADDC 0,0,ret1
$neg5:
SUB 0,arg0,arg0
ADDI 1,arg0,arg0
SHD 0,arg0,31,ret1
SH1ADD arg0,arg0,arg0
B $neg
ADDC ret1,0,ret1
$$divU_5:
.EXPORT $$divU_5,MILLICODE
ADDI 1,arg0,arg0
ADDC 0,0,ret1
SHD ret1,arg0,31,t1
SH1ADD arg0,arg0,arg0
B $pos
ADDC t1,ret1,ret1
$$divI_6:
.EXPORT $$divI_6,MILLICODE
COMB,<,N arg0,0,$neg6
EXTRU arg0,30,31,arg0
ADDI 5,arg0,t1
SH2ADD arg0,t1,arg0
B $pos
ADDC 0,0,ret1
$neg6:
SUBI 2,arg0,arg0
EXTRU arg0,30,31,arg0
SHD 0,arg0,30,ret1
SH2ADD arg0,arg0,arg0
B $neg
ADDC ret1,0,ret1
$$divU_6:
.EXPORT $$divU_6,MILLICODE
EXTRU arg0,30,31,arg0
ADDI 1,arg0,arg0
SHD 0,arg0,30,ret1
SH2ADD arg0,arg0,arg0
B $pos
ADDC ret1,0,ret1
$$divU_10:
.EXPORT $$divU_10,MILLICODE
EXTRU arg0,30,31,arg0
ADDI 3,arg0,t1
SH1ADD arg0,t1,arg0
ADDC 0,0,ret1
$pos:
SHD ret1,arg0,28,t1
SHD arg0,0,28,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
$pos_for_17:
SHD ret1,arg0,24,t1
SHD arg0,0,24,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
SHD ret1,arg0,16,t1
SHD arg0,0,16,t2
ADD arg0,t2,arg0
bv 0(r31)
ADDC ret1,t1,ret1
$$divI_10:
.EXPORT $$divI_10,MILLICODE
COMB,< arg0,0,$neg10
COPY 0,ret1
EXTRU arg0,30,31,arg0
ADDIB,TR 1,arg0,$pos
SH1ADD arg0,arg0,arg0
$neg10:
SUBI 2,arg0,arg0
EXTRU arg0,30,31,arg0
SH1ADD arg0,arg0,arg0
$neg:
SHD ret1,arg0,28,t1
SHD arg0,0,28,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
$neg_for_17:
SHD ret1,arg0,24,t1
SHD arg0,0,24,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
SHD ret1,arg0,16,t1
SHD arg0,0,16,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
bv 0(r31)
SUB 0,ret1,ret1
$$divI_12:
.EXPORT $$divI_12,MILLICODE
COMB,< arg0,0,$neg12
COPY 0,ret1
EXTRU arg0,29,30,arg0
ADDIB,TR 1,arg0,$pos
SH2ADD arg0,arg0,arg0
$neg12:
SUBI 4,arg0,arg0
EXTRU arg0,29,30,arg0
B $neg
SH2ADD arg0,arg0,arg0
$$divU_12:
.EXPORT $$divU_12,MILLICODE
EXTRU arg0,29,30,arg0
ADDI 5,arg0,t1
SH2ADD arg0,t1,arg0
B $pos
ADDC 0,0,ret1
$$divI_15:
.EXPORT $$divI_15,MILLICODE
COMB,< arg0,0,$neg15
COPY 0,ret1
ADDIB,TR 1,arg0,$pos+4
SHD ret1,arg0,28,t1
$neg15:
B $neg
SUBI 1,arg0,arg0
$$divU_15:
.EXPORT $$divU_15,MILLICODE
ADDI 1,arg0,arg0
B $pos
ADDC 0,0,ret1
$$divI_17:
.EXPORT $$divI_17,MILLICODE
COMB,<,N arg0,0,$neg17
ADDI 1,arg0,arg0
SHD 0,arg0,28,t1
SHD arg0,0,28,t2
SUB t2,arg0,arg0
B $pos_for_17
SUBB t1,0,ret1
$neg17:
SUBI 1,arg0,arg0
SHD 0,arg0,28,t1
SHD arg0,0,28,t2
SUB t2,arg0,arg0
B $neg_for_17
SUBB t1,0,ret1
$$divU_17:
.EXPORT $$divU_17,MILLICODE
ADDI 1,arg0,arg0
ADDC 0,0,ret1
SHD ret1,arg0,28,t1
$u17:
SHD arg0,0,28,t2
SUB t2,arg0,arg0
B $pos_for_17
SUBB t1,ret1,ret1
$$divI_7:
.EXPORT $$divI_7,MILLICODE
COMB,<,N arg0,0,$neg7
$7:
ADDI 1,arg0,arg0
SHD 0,arg0,29,ret1
SH3ADD arg0,arg0,arg0
ADDC ret1,0,ret1
$pos7:
SHD ret1,arg0,26,t1
SHD arg0,0,26,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
SHD ret1,arg0,20,t1
SHD arg0,0,20,t2
ADD arg0,t2,arg0
ADDC ret1,t1,t1
COPY 0,ret1
SHD,= t1,arg0,24,t1
$1:
ADDB,TR t1,ret1,$2
EXTRU arg0,31,24,arg0
bv,n 0(r31)
$2:
ADDB,TR t1,arg0,$1
EXTRU,= arg0,7,8,t1
$neg7:
SUBI 1,arg0,arg0
$8:
SHD 0,arg0,29,ret1
SH3ADD arg0,arg0,arg0
ADDC ret1,0,ret1
$neg7_shift:
SHD ret1,arg0,26,t1
SHD arg0,0,26,t2
ADD arg0,t2,arg0
ADDC ret1,t1,ret1
SHD ret1,arg0,20,t1
SHD arg0,0,20,t2
ADD arg0,t2,arg0
ADDC ret1,t1,t1
COPY 0,ret1
SHD,= t1,arg0,24,t1
$3:
ADDB,TR t1,ret1,$4
EXTRU arg0,31,24,arg0
bv 0(r31)
SUB 0,ret1,ret1
$4:
ADDB,TR t1,arg0,$3
EXTRU,= arg0,7,8,t1
$$divU_7:
.EXPORT $$divU_7,MILLICODE
ADDI 1,arg0,arg0
ADDC 0,0,ret1
SHD ret1,arg0,29,t1
SH3ADD arg0,arg0,arg0
B $pos7
ADDC t1,ret1,ret1
$$divI_9:
.EXPORT $$divI_9,MILLICODE
COMB,<,N arg0,0,$neg9
ADDI 1,arg0,arg0
SHD 0,arg0,29,t1
SHD arg0,0,29,t2
SUB t2,arg0,arg0
B $pos7
SUBB t1,0,ret1
$neg9:
SUBI 1,arg0,arg0
SHD 0,arg0,29,t1
SHD arg0,0,29,t2
SUB t2,arg0,arg0
B $neg7_shift
SUBB t1,0,ret1
$$divU_9:
.EXPORT $$divU_9,MILLICODE
ADDI 1,arg0,arg0
ADDC 0,0,ret1
SHD ret1,arg0,29,t1
SHD arg0,0,29,t2
SUB t2,arg0,arg0
B $pos7
SUBB t1,ret1,ret1
$$divI_14:
.EXPORT $$divI_14,MILLICODE
COMB,<,N arg0,0,$neg14
$$divU_14:
.EXPORT $$divU_14,MILLICODE
B $7
EXTRU arg0,30,31,arg0
$neg14:
SUBI 2,arg0,arg0
B $8
EXTRU arg0,30,31,arg0
.PROCEND
.END
rmndr: .EQU ret1 ; r29
.export $$remU,millicode
$$remU:
.proc
.callinfo NO_CALLS
.entry
comib,>=,n 0,arg1,special_case
sub r0,arg1,rmndr ; clear carry, negate the divisor
ds r0,rmndr,r0 ; set V-bit to 1
add arg0,arg0,temp ; shift msb bit into carry
ds r0,arg1,rmndr ; 1st divide step, if no carry
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 2nd divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 3rd divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 4th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 5th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 6th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 7th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 8th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 9th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 10th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 11th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 12th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 13th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 14th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 15th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 16th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 17th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 18th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 19th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 20th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 21st divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 22nd divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 23rd divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 24th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 25th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 26th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 27th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 28th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 29th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 30th divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 31st divide step
addc temp,temp,temp ; shift temp with/into carry
ds rmndr,arg1,rmndr ; 32nd divide step,
comiclr,<= 0,rmndr,r0
add rmndr,arg1,rmndr ; correction
; .exit
bv,n 0(r31)
nop
; Putting >= on the last DS and deleting COMICLR does not work!
;_____________________________________________________________________________
special_case:
addit,= 0,arg1,r0 ; trap on div by zero
sub,>>= arg0,arg1,rmndr
copy arg0,rmndr
.exit
bv,n 0(r31)
nop
.procend
.end
; Use bv 0(r31) and bv,n 0(r31) instead.
; #define return bv 0(%mrp)
; #define return_n bv,n 0(%mrp)
.align 16
$$mulI:
.proc
.callinfo NO_CALLS
.export $$mulI, millicode
combt,<<= %r25,%r26,l4 ; swap args if unsigned %r25>%r26
copy 0,%r29 ; zero out the result
xor %r26,%r25,%r26 ; swap %r26 & %r25 using the
xor %r26,%r25,%r25 ; old xor trick
xor %r26,%r25,%r26
l4: combt,<= 0,%r26,l3 ; if %r26>=0 then proceed like unsigned
zdep %r25,30,8,%r1 ; %r1 = (%r25&0xff)<<1 *********
sub,> 0,%r25,%r1 ; otherwise negate both and
combt,<=,n %r26,%r1,l2 ; swap back if |%r26|<|%r25|
sub 0,%r26,%r25
movb,tr,n %r1,%r26,l2 ; 10th inst.
l0: add %r29,%r1,%r29 ; add in this partial product
l1: zdep %r26,23,24,%r26 ; %r26 <<= 8 ******************
l2: zdep %r25,30,8,%r1 ; %r1 = (%r25&0xff)<<1 *********
l3: blr %r1,0 ; case on these 8 bits ******
extru %r25,23,24,%r25 ; %r25 >>= 8 ******************
;16 insts before this.
; %r26 <<= 8 **************************
x0: comb,<> %r25,0,l2 ! zdep %r26,23,24,%r26 ! bv,n 0(r31) ! nop
x1: comb,<> %r25,0,l1 ! add %r29,%r26,%r29 ! bv,n 0(r31) ! nop
x2: comb,<> %r25,0,l1 ! sh1add %r26,%r29,%r29 ! bv,n 0(r31) ! nop
x3: comb,<> %r25,0,l0 ! sh1add %r26,%r26,%r1 ! bv 0(r31) ! add %r29,%r1,%r29
x4: comb,<> %r25,0,l1 ! sh2add %r26,%r29,%r29 ! bv,n 0(r31) ! nop
x5: comb,<> %r25,0,l0 ! sh2add %r26,%r26,%r1 ! bv 0(r31) ! add %r29,%r1,%r29
x6: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh1add %r1,%r29,%r29 ! bv,n 0(r31)
x7: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh2add %r26,%r29,%r29 ! b,n ret_t0
x8: comb,<> %r25,0,l1 ! sh3add %r26,%r29,%r29 ! bv,n 0(r31) ! nop
x9: comb,<> %r25,0,l0 ! sh3add %r26,%r26,%r1 ! bv 0(r31) ! add %r29,%r1,%r29
x10: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh1add %r1,%r29,%r29 ! bv,n 0(r31)
x11: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh3add %r26,%r29,%r29 ! b,n ret_t0
x12: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh2add %r1,%r29,%r29 ! bv,n 0(r31)
x13: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh3add %r26,%r29,%r29 ! b,n ret_t0
x14: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x15: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh1add %r1,%r1,%r1 ! b,n ret_t0
x16: zdep %r26,27,28,%r1 ! comb,<> %r25,0,l1 ! add %r29,%r1,%r29 ! bv,n 0(r31)
x17: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh3add %r26,%r1,%r1 ! b,n ret_t0
x18: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh1add %r1,%r29,%r29 ! bv,n 0(r31)
x19: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh1add %r1,%r26,%r1 ! b,n ret_t0
x20: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh2add %r1,%r29,%r29 ! bv,n 0(r31)
x21: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh2add %r1,%r26,%r1 ! b,n ret_t0
x22: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x23: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x24: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh3add %r1,%r29,%r29 ! bv,n 0(r31)
x25: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh2add %r1,%r1,%r1 ! b,n ret_t0
x26: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x27: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh3add %r1,%r1,%r1 ! b,n ret_t0
x28: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x29: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x30: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x31: zdep %r26,26,27,%r1 ! comb,<> %r25,0,l0 ! sub %r1,%r26,%r1 ! b,n ret_t0
x32: zdep %r26,26,27,%r1 ! comb,<> %r25,0,l1 ! add %r29,%r1,%r29 ! bv,n 0(r31)
x33: sh3add %r26,0,%r1 ! comb,<> %r25,0,l0 ! sh2add %r1,%r26,%r1 ! b,n ret_t0
x34: zdep %r26,27,28,%r1 ! add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x35: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh3add %r26,%r1,%r1
x36: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh2add %r1,%r29,%r29 ! bv,n 0(r31)
x37: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh2add %r1,%r26,%r1 ! b,n ret_t0
x38: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x39: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x40: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh3add %r1,%r29,%r29 ! bv,n 0(r31)
x41: sh2add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh3add %r1,%r26,%r1 ! b,n ret_t0
x42: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x43: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x44: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x45: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! sh2add %r1,%r1,%r1 ! b,n ret_t0
x46: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! add %r1,%r26,%r1
x47: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh1add %r26,%r1,%r1
x48: sh1add %r26,%r26,%r1 ! comb,<> %r25,0,l0 ! zdep %r1,27,28,%r1 ! b,n ret_t0
x49: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh2add %r26,%r1,%r1
x50: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x51: sh3add %r26,%r26,%r1 ! sh3add %r26,%r1,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x52: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x53: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x54: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x55: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x56: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x57: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x58: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x59: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t02a0 ! sh1add %r1,%r1,%r1
x60: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x61: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x62: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x63: zdep %r26,25,26,%r1 ! comb,<> %r25,0,l0 ! sub %r1,%r26,%r1 ! b,n ret_t0
x64: zdep %r26,25,26,%r1 ! comb,<> %r25,0,l1 ! add %r29,%r1,%r29 ! bv,n 0(r31)
x65: sh3add %r26,0,%r1 ! comb,<> %r25,0,l0 ! sh3add %r1,%r26,%r1 ! b,n ret_t0
x66: zdep %r26,26,27,%r1 ! add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x67: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x68: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x69: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x70: zdep %r26,25,26,%r1 ! sh2add %r26,%r1,%r1 ! b e_t0 ! sh1add %r26,%r1,%r1
x71: sh3add %r26,%r26,%r1 ! sh3add %r1,0,%r1 ! b e_t0 ! sub %r1,%r26,%r1
x72: sh3add %r26,%r26,%r1 ! comb,<> %r25,0,l1 ! sh3add %r1,%r29,%r29 ! bv,n 0(r31)
x73: sh3add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_shift ! add %r29,%r1,%r29
x74: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x75: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x76: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x77: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x78: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x79: zdep %r26,27,28,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sub %r1,%r26,%r1
x80: zdep %r26,27,28,%r1 ! sh2add %r1,%r1,%r1 ! b e_shift ! add %r29,%r1,%r29
x81: sh3add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_shift ! add %r29,%r1,%r29
x82: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x83: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x84: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x85: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x86: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x87: sh3add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_t02a0 ! sh2add %r26,%r1,%r1
x88: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x89: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x90: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x91: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x92: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0 ! sh1add %r1,%r26,%r1
x93: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x94: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0 ! sh1add %r26,%r1,%r1
x95: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x96: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x97: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x98: zdep %r26,26,27,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh1add %r26,%r1,%r1
x99: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x100: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x101: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x102: zdep %r26,26,27,%r1 ! sh1add %r26,%r1,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x103: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t02a0 ! sh2add %r1,%r26,%r1
x104: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x105: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x106: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x107: sh3add %r26,%r26,%r1 ! sh2add %r26,%r1,%r1 ! b e_t02a0 ! sh3add %r1,%r26,%r1
x108: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x109: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x110: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x111: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x112: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! zdep %r1,27,28,%r1
x113: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t02a0 ! sh1add %r1,%r1,%r1
x114: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r1,%r1
x115: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0a0 ! sh1add %r1,%r1,%r1
x116: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0 ! sh2add %r1,%r26,%r1
x117: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r1,%r1
x118: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0a0 ! sh3add %r1,%r1,%r1
x119: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t02a0 ! sh3add %r1,%r1,%r1
x120: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x121: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x122: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x123: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x124: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x125: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x126: zdep %r26,25,26,%r1 ! sub %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x127: zdep %r26,24,25,%r1 ! comb,<> %r25,0,l0 ! sub %r1,%r26,%r1 ! b,n ret_t0
x128: zdep %r26,24,25,%r1 ! comb,<> %r25,0,l1 ! add %r29,%r1,%r29 ! bv,n 0(r31)
x129: zdep %r26,24,25,%r1 ! comb,<> %r25,0,l0 ! add %r1,%r26,%r1 ! b,n ret_t0
x130: zdep %r26,25,26,%r1 ! add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x131: sh3add %r26,0,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x132: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x133: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x134: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x135: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x136: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x137: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x138: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x139: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0a0 ! sh2add %r1,%r26,%r1
x140: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0 ! sh2add %r1,%r1,%r1
x141: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0a0 ! sh1add %r1,%r26,%r1
x142: sh3add %r26,%r26,%r1 ! sh3add %r1,0,%r1 ! b e_2t0 ! sub %r1,%r26,%r1
x143: zdep %r26,27,28,%r1 ! sh3add %r1,%r1,%r1 ! b e_t0 ! sub %r1,%r26,%r1
x144: sh3add %r26,%r26,%r1 ! sh3add %r1,0,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x145: sh3add %r26,%r26,%r1 ! sh3add %r1,0,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x146: sh3add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x147: sh3add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x148: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x149: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x150: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x151: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0a0 ! sh1add %r1,%r26,%r1
x152: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x153: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x154: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x155: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x156: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0 ! sh1add %r1,%r26,%r1
x157: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_t02a0 ! sh2add %r1,%r1,%r1
x158: zdep %r26,27,28,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0 ! sub %r1,%r26,%r1
x159: zdep %r26,26,27,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sub %r1,%r26,%r1
x160: sh2add %r26,%r26,%r1 ! sh2add %r1,0,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x161: sh3add %r26,0,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x162: sh3add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x163: sh3add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_t0 ! sh1add %r1,%r26,%r1
x164: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x165: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x166: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x167: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_2t0a0 ! sh1add %r1,%r26,%r1
x168: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x169: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x170: zdep %r26,26,27,%r1 ! sh1add %r26,%r1,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x171: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r1,%r1
x172: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_4t0 ! sh1add %r1,%r26,%r1
x173: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t02a0 ! sh3add %r1,%r1,%r1
x174: zdep %r26,26,27,%r1 ! sh1add %r26,%r1,%r1 ! b e_t04a0 ! sh2add %r1,%r1,%r1
x175: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_5t0 ! sh1add %r1,%r26,%r1
x176: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_8t0 ! add %r1,%r26,%r1
x177: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_8t0a0 ! add %r1,%r26,%r1
x178: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh3add %r1,%r26,%r1
x179: sh2add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0a0 ! sh3add %r1,%r26,%r1
x180: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x181: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x182: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0 ! sh1add %r1,%r26,%r1
x183: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0a0 ! sh1add %r1,%r26,%r1
x184: sh2add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_4t0 ! add %r1,%r26,%r1
x185: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x186: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r1,%r1
x187: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t02a0 ! sh2add %r1,%r1,%r1
x188: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_4t0 ! sh1add %r26,%r1,%r1
x189: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r1,%r1
x190: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_2t0 ! sh2add %r1,%r1,%r1
x191: zdep %r26,25,26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sub %r1,%r26,%r1
x192: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x193: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x194: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x195: sh3add %r26,0,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x196: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_4t0 ! sh1add %r1,%r26,%r1
x197: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_4t0a0 ! sh1add %r1,%r26,%r1
x198: zdep %r26,25,26,%r1 ! sh1add %r26,%r1,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x199: sh3add %r26,0,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0a0 ! sh1add %r1,%r1,%r1
x200: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x201: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x202: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x203: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0a0 ! sh2add %r1,%r26,%r1
x204: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0 ! sh1add %r1,%r1,%r1
x205: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x206: zdep %r26,25,26,%r1 ! sh2add %r26,%r1,%r1 ! b e_t02a0 ! sh1add %r1,%r1,%r1
x207: sh3add %r26,0,%r1 ! sh1add %r1,%r26,%r1 ! b e_3t0 ! sh2add %r1,%r26,%r1
x208: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_8t0 ! add %r1,%r26,%r1
x209: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_8t0a0 ! add %r1,%r26,%r1
x210: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh2add %r1,%r1,%r1
x211: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0a0 ! sh2add %r1,%r1,%r1
x212: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_4t0 ! sh2add %r1,%r26,%r1
x213: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_4t0a0 ! sh2add %r1,%r26,%r1
x214: sh3add %r26,%r26,%r1 ! sh2add %r26,%r1,%r1 ! b e2t04a0 ! sh3add %r1,%r26,%r1
x215: sh2add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_5t0 ! sh1add %r1,%r26,%r1
x216: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x217: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x218: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_2t0 ! sh2add %r1,%r26,%r1
x219: sh3add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x220: sh1add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_4t0 ! sh1add %r1,%r26,%r1
x221: sh1add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_4t0a0 ! sh1add %r1,%r26,%r1
x222: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r1,%r1
x223: sh3add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0a0 ! sh1add %r1,%r1,%r1
x224: sh3add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_8t0 ! add %r1,%r26,%r1
x225: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0 ! sh2add %r1,%r1,%r1
x226: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_t02a0 ! zdep %r1,26,27,%r1
x227: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_t02a0 ! sh2add %r1,%r1,%r1
x228: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0 ! sh1add %r1,%r1,%r1
x229: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_4t0a0 ! sh1add %r1,%r1,%r1
x230: sh3add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_5t0 ! add %r1,%r26,%r1
x231: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_3t0 ! sh2add %r1,%r26,%r1
x232: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_8t0 ! sh2add %r1,%r26,%r1
x233: sh1add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e_8t0a0 ! sh2add %r1,%r26,%r1
x234: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0 ! sh3add %r1,%r1,%r1
x235: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e_2t0a0 ! sh3add %r1,%r1,%r1
x236: sh3add %r26,%r26,%r1 ! sh1add %r1,%r26,%r1 ! b e4t08a0 ! sh1add %r1,%r1,%r1
x237: zdep %r26,27,28,%r1 ! sh2add %r1,%r1,%r1 ! b e_3t0 ! sub %r1,%r26,%r1
x238: sh1add %r26,%r26,%r1 ! sh2add %r1,%r26,%r1 ! b e2t04a0 ! sh3add %r1,%r1,%r1
x239: zdep %r26,27,28,%r1 ! sh2add %r1,%r1,%r1 ! b e_t0ma0 ! sh1add %r1,%r1,%r1
x240: sh3add %r26,%r26,%r1 ! add %r1,%r26,%r1 ! b e_8t0 ! sh1add %r1,%r1,%r1
x241: sh3add %r26,%r26,%r1 ! add %r1,%r26,%r1 ! b e_8t0a0 ! sh1add %r1,%r1,%r1
x242: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_2t0 ! sh3add %r1,%r26,%r1
x243: sh3add %r26,%r26,%r1 ! sh3add %r1,%r1,%r1 ! b e_t0 ! sh1add %r1,%r1,%r1
x244: sh2add %r26,%r26,%r1 ! sh1add %r1,%r1,%r1 ! b e_4t0 ! sh2add %r1,%r26,%r1
x245: sh3add %r26,0,%r1 ! sh1add %r1,%r1,%r1 ! b e_5t0 ! sh1add %r1,%r26,%r1
x246: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_2t0 ! sh1add %r1,%r1,%r1
x247: sh2add %r26,%r26,%r1 ! sh3add %r1,%r26,%r1 ! b e_2t0a0 ! sh1add %r1,%r1,%r1
x248: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_shift ! sh3add %r1,%r29,%r29
x249: zdep %r26,26,27,%r1 ! sub %r1,%r26,%r1 ! b e_t0 ! sh3add %r1,%r26,%r1
x250: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0 ! sh2add %r1,%r1,%r1
x251: sh2add %r26,%r26,%r1 ! sh2add %r1,%r1,%r1 ! b e_2t0a0 ! sh2add %r1,%r1,%r1
x252: zdep %r26,25,26,%r1 ! sub %r1,%r26,%r1 ! b e_shift ! sh2add %r1,%r29,%r29
x253: zdep %r26,25,26,%r1 ! sub %r1,%r26,%r1 ! b e_t0 ! sh2add %r1,%r26,%r1
x254: zdep %r26,24,25,%r1 ! sub %r1,%r26,%r1 ! b e_shift ! sh1add %r1,%r29,%r29
x255: zdep %r26,23,24,%r1 ! comb,<> %r25,0,l0 ! sub %r1,%r26,%r1 ! b,n ret_t0
;1040 insts before this.
ret_t0: bv 0(r31)
e_t0: add %r29,%r1,%r29
e_shift: comb,<> %r25,0,l2
zdep %r26,23,24,%r26 ; %r26 <<= 8 ***********
bv,n 0(r31)
e_t0ma0: comb,<> %r25,0,l0
sub %r1,%r26,%r1
bv 0(r31)
add %r29,%r1,%r29
e_t0a0: comb,<> %r25,0,l0
add %r1,%r26,%r1
bv 0(r31)
add %r29,%r1,%r29
e_t02a0: comb,<> %r25,0,l0
sh1add %r26,%r1,%r1
bv 0(r31)
add %r29,%r1,%r29
e_t04a0: comb,<> %r25,0,l0
sh2add %r26,%r1,%r1
bv 0(r31)
add %r29,%r1,%r29
e_2t0: comb,<> %r25,0,l1
sh1add %r1,%r29,%r29
bv,n 0(r31)
e_2t0a0: comb,<> %r25,0,l0
sh1add %r1,%r26,%r1
bv 0(r31)
add %r29,%r1,%r29
e2t04a0: sh1add %r26,%r1,%r1
comb,<> %r25,0,l1
sh1add %r1,%r29,%r29
bv,n 0(r31)
e_3t0: comb,<> %r25,0,l0
sh1add %r1,%r1,%r1
bv 0(r31)
add %r29,%r1,%r29
e_4t0: comb,<> %r25,0,l1
sh2add %r1,%r29,%r29
bv,n 0(r31)
e_4t0a0: comb,<> %r25,0,l0
sh2add %r1,%r26,%r1
bv 0(r31)
add %r29,%r1,%r29
e4t08a0: sh1add %r26,%r1,%r1
comb,<> %r25,0,l1
sh2add %r1,%r29,%r29
bv,n 0(r31)
e_5t0: comb,<> %r25,0,l0
sh2add %r1,%r1,%r1
bv 0(r31)
add %r29,%r1,%r29
e_8t0: comb,<> %r25,0,l1
sh3add %r1,%r29,%r29
bv,n 0(r31)
e_8t0a0: comb,<> %r25,0,l0
sh3add %r1,%r26,%r1
bv 0(r31)
add %r29,%r1,%r29
.procend
.end
.import $$divI_2,millicode
.import $$divI_3,millicode
.import $$divI_4,millicode
.import $$divI_5,millicode
.import $$divI_6,millicode
.import $$divI_7,millicode
.import $$divI_8,millicode
.import $$divI_9,millicode
.import $$divI_10,millicode
.import $$divI_12,millicode
.import $$divI_14,millicode
.import $$divI_15,millicode
.export $$divI,millicode
.export $$divoI,millicode
$$divoI:
.proc
.callinfo NO_CALLS
comib,=,n -1,arg1,negative1 ; when divisor == -1
$$divI:
comib,>>=,n 15,arg1,small_divisor
add,>= 0,arg0,retreg ; move dividend, if retreg < 0,
normal1:
sub 0,retreg,retreg ; make it positive
sub 0,arg1,temp ; clear carry,
; negate the divisor
ds 0,temp,0 ; set V-bit to the comple-
; ment of the divisor sign
add retreg,retreg,retreg ; shift msb bit into carry
ds r0,arg1,temp ; 1st divide step, if no carry
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 2nd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 3rd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 4th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 5th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 6th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 7th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 8th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 9th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 10th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 11th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 12th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 13th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 14th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 15th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 16th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 17th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 18th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 19th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 20th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 21st divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 22nd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 23rd divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 24th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 25th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 26th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 27th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 28th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 29th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 30th divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 31st divide step
addc retreg,retreg,retreg ; shift retreg with/into carry
ds temp,arg1,temp ; 32nd divide step,
addc retreg,retreg,retreg ; shift last retreg bit into retreg
xor,>= arg0,arg1,0 ; get correct sign of quotient
sub 0,retreg,retreg ; based on operand signs
bv,n 0(r31)
nop
;______________________________________________________________________
small_divisor:
blr,n arg1,r0
nop
; table for divisor == 0,1, ... ,15
addit,= 0,arg1,r0 ; trap if divisor == 0
nop
bv 0(r31) ; divisor == 1
copy arg0,retreg
b,n $$divI_2 ; divisor == 2
nop
b,n $$divI_3 ; divisor == 3
nop
b,n $$divI_4 ; divisor == 4
nop
b,n $$divI_5 ; divisor == 5
nop
b,n $$divI_6 ; divisor == 6
nop
b,n $$divI_7 ; divisor == 7
nop
b,n $$divI_8 ; divisor == 8
nop
b,n $$divI_9 ; divisor == 9
nop
b,n $$divI_10 ; divisor == 10
nop
b normal1 ; divisor == 11
add,>= 0,arg0,retreg
b,n $$divI_12 ; divisor == 12
nop
b normal1 ; divisor == 13
add,>= 0,arg0,retreg
b,n $$divI_14 ; divisor == 14
nop
b,n $$divI_15 ; divisor == 15
nop
;______________________________________________________________________
negative1:
sub 0,arg0,retreg ; result is negation of dividend
bv 0(r31)
addo arg0,arg1,r0 ; trap iff dividend==0x80000000 && divisor==-1
.procend
.end
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