mirror of
https://github.com/byteworksinc/ORCA-C.git
synced 2024-12-30 14:31:04 +00:00
941 lines
19 KiB
NASM
941 lines
19 KiB
NASM
mcopy exp.macros
|
|
****************************************************************
|
|
*
|
|
* function lshr(x,y: longint): longint;
|
|
*
|
|
* Inputs:
|
|
* num1 - number to shift
|
|
* num2 - # bits to shift by
|
|
*
|
|
* Outputs:
|
|
* A - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
lshr start exp
|
|
|
|
subroutine (4:num1,4:num2),0
|
|
|
|
lda num2+2 if num2 < 0 then
|
|
bpl lb2
|
|
cmp #$FFFF shift left
|
|
bne zero
|
|
ldx num2
|
|
cpx #-34
|
|
blt zero
|
|
lb1 asl num1
|
|
rol num1+2
|
|
inx
|
|
bne lb1
|
|
bra lb4
|
|
zero stz num1 (result is zero)
|
|
stz num1+2
|
|
bra lb4
|
|
lb2 bne zero else shift right
|
|
ldx num2
|
|
beq lb4
|
|
cpx #33
|
|
bge zero
|
|
lb3 lsr num1+2
|
|
ror num1
|
|
dex
|
|
bne lb3
|
|
|
|
lb4 lda 0 fix stack and return
|
|
sta num2
|
|
lda 2
|
|
sta num2+2
|
|
|
|
return 4:num1
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function udiv(x,y: longint): longint;
|
|
*
|
|
* Inputs:
|
|
* num1 - numerator
|
|
* num2 - denominator
|
|
*
|
|
* Outputs:
|
|
* ans - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
udiv start exp
|
|
ans equ 0 answer
|
|
rem equ 4 remainder
|
|
|
|
subroutine (4:num1,4:num2),8
|
|
;
|
|
; Initialize
|
|
;
|
|
stz rem rem = 0
|
|
stz rem+2
|
|
move4 num1,ans ans = num1
|
|
lda num2 check for division by zero
|
|
ora num2+2
|
|
beq dv9
|
|
|
|
lda num2+2 do 16 bit divides separately
|
|
ora ans+2
|
|
beq dv5
|
|
;
|
|
; 32 bit divide
|
|
;
|
|
ldy #32 32 bits to go
|
|
dv3 asl ans roll up the next number
|
|
rol ans+2
|
|
rol ans+4
|
|
rol ans+6
|
|
sec subtract for this digit
|
|
lda ans+4
|
|
sbc num2
|
|
tax
|
|
lda ans+6
|
|
sbc num2+2
|
|
bcc dv4 branch if minus
|
|
stx ans+4 turn the bit on
|
|
sta ans+6
|
|
inc ans
|
|
dv4 dey next bit
|
|
bne dv3
|
|
bra dv9 go do the sign
|
|
;
|
|
; 16 bit divide
|
|
;
|
|
dv5 lda #0 initialize the remainder
|
|
ldy #16 16 bits to go
|
|
dv6 asl ans roll up the next number
|
|
rol a
|
|
sec subtract the digit
|
|
sbc num2
|
|
bcs dv7
|
|
adc num2 digit is 0
|
|
dey
|
|
bne dv6
|
|
bra dv8
|
|
dv7 inc ans digit is 1
|
|
dey
|
|
bne dv6
|
|
|
|
dv8 sta ans+4 save the remainder
|
|
;
|
|
; Return the result
|
|
;
|
|
dv9 return 4:ans move answer
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function uge(x,y: longint): cboolean;
|
|
*
|
|
****************************************************************
|
|
*
|
|
uge start exp
|
|
result equ 0
|
|
|
|
subroutine (4:x,4:y),4
|
|
|
|
stz result
|
|
stz result+2
|
|
lda x+2
|
|
cmp y+2
|
|
bne lb1
|
|
lda x
|
|
cmp y
|
|
lb1 blt lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function ugt(x,y: longint): cboolean;
|
|
*
|
|
****************************************************************
|
|
*
|
|
ugt start exp
|
|
result equ 0
|
|
|
|
subroutine (4:x,4:y),4
|
|
|
|
stz result
|
|
stz result+2
|
|
lda x+2
|
|
cmp y+2
|
|
bne lb1
|
|
lda x
|
|
cmp y
|
|
lb1 ble lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function ule(x,y: longint): cboolean;
|
|
*
|
|
****************************************************************
|
|
*
|
|
ule start exp
|
|
result equ 0
|
|
|
|
subroutine (4:x,4:y),4
|
|
|
|
stz result
|
|
stz result+2
|
|
lda x+2
|
|
cmp y+2
|
|
bne lb1
|
|
lda x
|
|
cmp y
|
|
lb1 bgt lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function ult(x,y: longint): cboolean;
|
|
*
|
|
****************************************************************
|
|
*
|
|
ult start exp
|
|
result equ 0
|
|
|
|
subroutine (4:x,4:y),4
|
|
|
|
stz result
|
|
stz result+2
|
|
lda x+2
|
|
cmp y+2
|
|
bne lb1
|
|
lda x
|
|
cmp y
|
|
lb1 bge lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function umod(x,y: longint): longint;
|
|
*
|
|
* Inputs:
|
|
* num1 - numerator
|
|
* num2 - denominator
|
|
*
|
|
* Outputs:
|
|
* ans+4 - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
umod start exp
|
|
ans equ 0 answer
|
|
rem equ 4 remainder
|
|
|
|
subroutine (4:num1,4:num2),8
|
|
;
|
|
; Initialize
|
|
;
|
|
stz rem rem = 0
|
|
stz rem+2
|
|
move4 num1,ans ans = num1
|
|
lda num2 check for division by zero
|
|
ora num2+2
|
|
beq dv9
|
|
|
|
lda num2+2 do 16 bit divides separately
|
|
ora ans+2
|
|
beq dv5
|
|
;
|
|
; 32 bit divide
|
|
;
|
|
ldy #32 32 bits to go
|
|
dv3 asl ans roll up the next number
|
|
rol ans+2
|
|
rol ans+4
|
|
rol ans+6
|
|
sec subtract for this digit
|
|
lda ans+4
|
|
sbc num2
|
|
tax
|
|
lda ans+6
|
|
sbc num2+2
|
|
bcc dv4 branch if minus
|
|
stx ans+4 turn the bit on
|
|
sta ans+6
|
|
inc ans
|
|
dv4 dey next bit
|
|
bne dv3
|
|
bra dv9 go do the sign
|
|
;
|
|
; 16 bit divide
|
|
;
|
|
dv5 lda #0 initialize the remainder
|
|
ldy #16 16 bits to go
|
|
dv6 asl ans roll up the next number
|
|
rol a
|
|
sec subtract the digit
|
|
sbc num2
|
|
bcs dv7
|
|
adc num2 digit is 0
|
|
dey
|
|
bne dv6
|
|
bra dv8
|
|
dv7 inc ans digit is 1
|
|
dey
|
|
bne dv6
|
|
|
|
dv8 sta ans+4 save the remainder
|
|
;
|
|
; Return the result
|
|
;
|
|
dv9 return 4:ans+4 move answer
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function umul(x,y: longint): longint;
|
|
*
|
|
* Inputs:
|
|
* num2,num1 - operands
|
|
*
|
|
* Outputs:
|
|
* ans - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
umul start exp
|
|
ans equ 0 answer
|
|
|
|
subroutine (4:num1,4:num2),8
|
|
;
|
|
; Initialize the sign and split on precision.
|
|
;
|
|
stz ans+4 set up the multiplier
|
|
stz ans+6
|
|
lda num1
|
|
sta ans
|
|
lda num1+2
|
|
sta ans+2
|
|
beq ml3 branch if the multiplier is 16 bit
|
|
;
|
|
; Do a 32 bit by 32 bit multiply.
|
|
;
|
|
ldy #32 32 bit multiply
|
|
jsr ml1
|
|
brl ml7
|
|
|
|
ml1 lda ans SYSS1*SYSS1+2+SYSS1+2 -> SYSS1,SYSS1+2
|
|
lsr a
|
|
bcc ml2
|
|
clc add multiplicand to the partial product
|
|
lda ans+4
|
|
adc num2
|
|
sta ans+4
|
|
lda ans+6
|
|
adc num2+2
|
|
sta ans+6
|
|
ml2 ror ans+6 shift the interim result
|
|
ror ans+4
|
|
ror ans+2
|
|
ror ans
|
|
dey loop til done
|
|
bne ml1
|
|
rts
|
|
;
|
|
; Do and 16 bit by 32 bit multiply.
|
|
;
|
|
ml3 lda num2+2 branch if 16x16 is possible
|
|
beq ml4
|
|
|
|
ldy #16 set up for 16 bits
|
|
jsr ml1 do the multiply
|
|
lda ans+2 move the answer
|
|
sta ans
|
|
lda ans+4
|
|
sta ans+2
|
|
bra ml7
|
|
;
|
|
; Do a 16 bit by 16 bit multiply.
|
|
;
|
|
ml4 ldy #16 set the 16 bit counter
|
|
ldx ans move the low word
|
|
stx ans+2
|
|
ml5 lsr ans+2 test the bit
|
|
bcc ml6 branch if the bit is off
|
|
clc
|
|
adc num2
|
|
ml6 ror a shift the answer
|
|
ror ans
|
|
dey loop
|
|
bne ml5
|
|
sta ans+2 save the high word
|
|
;
|
|
; Return the result.
|
|
;
|
|
ml7 return 4:ans fix the stack
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure umul64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
umul64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~UMUL8
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure udiv64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
udiv64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~UDIV8
|
|
pl8 [x]
|
|
pla
|
|
pla
|
|
pla
|
|
pla
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure div64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
div64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~CDIV8
|
|
pl8 [x]
|
|
pla
|
|
pla
|
|
pla
|
|
pla
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure umod64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
umod64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~UDIV8
|
|
pla
|
|
pla
|
|
pla
|
|
pla
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure rem64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
rem64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~CDIV8
|
|
pla
|
|
pla
|
|
pla
|
|
pla
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure add64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
add64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~ADD8
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure sub64 (var x: longlong; y: longlong);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
sub64 start exp
|
|
|
|
subroutine (4:x,4:y),0
|
|
|
|
ph8 [x]
|
|
ph8 [y]
|
|
jsl ~SUB8
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure shl64 (var x: longlong; y: integer);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
shl64 start exp
|
|
|
|
subroutine (4:x,2:y),0
|
|
|
|
ph8 [x]
|
|
lda y
|
|
jsl ~SHL8
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure ashr64 (var x: longlong; y: integer);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
ashr64 start exp
|
|
|
|
subroutine (4:x,2:y),0
|
|
|
|
ph8 [x]
|
|
lda y
|
|
jsl ~ASHR8
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* procedure lshr64 (var x: longlong; y: integer);
|
|
*
|
|
* Inputs:
|
|
* x,y - operands
|
|
*
|
|
* Outputs:
|
|
* x - result
|
|
*
|
|
****************************************************************
|
|
*
|
|
lshr64 start exp
|
|
|
|
subroutine (4:x,2:y),0
|
|
|
|
ph8 [x]
|
|
lda y
|
|
jsl ~LSHR8
|
|
pl8 [x]
|
|
|
|
return
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function ult64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
ult64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 bge lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function uge64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
uge64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 blt lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function ule64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
ule64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 bgt lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function ugt64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
ugt64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 ble lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function slt64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
slt64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
eor [b],y
|
|
bpl lb0
|
|
lda [b],y
|
|
cmp [a],y
|
|
bra lb1
|
|
|
|
lb0 lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 bge lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function sge64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
sge64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
eor [b],y
|
|
bpl lb0
|
|
lda [b],y
|
|
cmp [a],y
|
|
bra lb1
|
|
|
|
lb0 lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 blt lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function sle64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
sle64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
eor [b],y
|
|
bpl lb0
|
|
lda [b],y
|
|
cmp [a],y
|
|
bra lb1
|
|
|
|
lb0 lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 bgt lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|
|
|
|
****************************************************************
|
|
*
|
|
* function sgt64(a,b: longlong): integer;
|
|
*
|
|
****************************************************************
|
|
*
|
|
sgt64 start exp
|
|
result equ 0
|
|
|
|
subroutine (4:a,4:b),2
|
|
|
|
stz result
|
|
ldy #6
|
|
lda [a],y
|
|
eor [b],y
|
|
bpl lb0
|
|
lda [b],y
|
|
cmp [a],y
|
|
bra lb1
|
|
|
|
lb0 lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
dey
|
|
dey
|
|
lda [a],y
|
|
cmp [b],y
|
|
bne lb1
|
|
lda [a]
|
|
cmp [b]
|
|
lb1 ble lb2
|
|
inc result
|
|
|
|
lb2 return 2:result
|
|
end
|