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rpn68k_arithmetic.i
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; T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
LS_ARITHMETIC_BASE macro
LS_FLAGS.\0 ab,\2,\3
IF LSF_ab&LSF_HAS_ARG ; Called with argument
IF LSF_ab&LSF_W
LS_CACHE
\1 \2,d0 ; Apply operation to cached TOS (16-bit)
ELSE
LS_CACHE.l
\1.l \2,d0 ; Apply operation to cached TOS (32-bit)
ENDC
ELSE ; No argument
IF LSF_ab&LSF_W
LS_CACHE
\1.w (a7)+,d0 ; Apply operation for two topmost
; values in stack (16-bit)
ELSE
LS_CACHE.l
\1.l (a7)+,d0 ; Apply operation for two topmost
; values in stack (32-bit)
ENDC
LS_SET LOCAL,LOCAL-(LSF_ab&LSF_SIZE_MASK)
ENDC
endm
LS_ARITHMETIC_BASE_2 macro
LS_FLAGS.\0 ab2,\2,\3
IF LSF_ab2&LSF_HAS_ARG
IF LSF_ab2&LSF_W
LS_CACHE
\1.w \2,d0
ELSE
LS_CACHE.l
\1.l \2,d0
ENDC
ELSE
IF LSF_ab2&LSF_W
LS_CACHE
\1.w d0,(a7)
drop
ELSE
LS_CACHE.l
\1.l d0,(a7)
drop
ENDC
ENDC
endm
LS_ARITHMETIC_BASE_3 macro
LS_FLAGS.\0 ab3,\2,\3
IF LSF_ab3&LSF_W
IF LSF_ab3&LSF_HAS_ARG
ldc \2
ELSE
LS_CACHE
ENDC
\1 d0,(a7)
ELSE
IF LSF_ab3&LSF_HAS_ARG
ldc.l \2
ELSE
LS_CACHE.l
ENDC
\1.l d0,(a7)
ENDC
drop
endm
LS_ROT_BASE macro
LS_FLAGS.\0 rotb,\2,\3
IF LSF_rotb&LSF_HAS_ARG
IF LSF_rotb&LSF_W
LS_CACHE
\1 \2,d0
ELSE
LS_CACHE.l
\1.l \2,d0
ENDC
ELSE
IF LS_CACHED=0
move.w (a7)+,d1
LS_SET LOCAL,LOCAL-2
ELSE ; Todo cache is not supposed to be 4
move.w d0,d1
drop
ENDC
IF LSF_rotb&LSF_W
LS_CACHE
\1 d1,d0
ELSE
LS_CACHE.l
\1.l d1,d0
ENDC
ENDC
endm
LS_ARITHMETIC_S_BASE macro
LS_FLAGS.\0 asingle,\2,\3
IF LSF_asingle&LSF_W
IF LSF_asingle&LSF_HAS_ARG
ldc \2
ELSE
LS_CACHE
ENDC
\1.w d0
ELSE
IF LSF_asingle&LSF_HAS_ARG
ldc.l \2
ELSE
LS_CACHE.l
ENDC
\1.l d0
ENDC
endm
; div
;
; div int16 value / int16 divider -> int16 result
; div.l int32 value / int16 divider -> int16 result
div macro
LS_FLAGS.\0 div,\1,\2
IF LSF_div&LSF_HAS_ARG
IF LSF_div&LSF_W
LS_CACHE.w
ext.l d0
ELSE
LS_CACHE.l
ENDC
divs \1,d0
ELSE
IF LS_CACHED=0
move.w (a7)+,d1 ; divider is 16-bit
LS_SET LOCAL,LOCAL-2
ELSE
move.w d0,d1
drop
ENDC
IF LSF_div&LSF_W
LS_CACHE
ext.l d0
ELSE
LS_CACHE.l
ENDC
divs d1,d0
ENDC
restore ; result is 16 bit
endm
; udiv
;
; Divide unsigned
;
; udiv uint16 value / uint16 divider -> uint16 result
; udiv.l uint32 value / uint16 divider -> uint16 result
udiv macro
LS_FLAGS.\0 udiv,\1,\2
IF LSF_udiv&LSF_HAS_ARG
IF LSF_udiv&LSF_W
LS_CACHE
and.l #$ffff,d0
ELSE
LS_CACHE.l
ENDC
divu \1,d0
ELSE
IF LS_CACHED=0
move.w (a7)+,d1 ; divider is 16-bit
LS_SET LOCAL,LOCAL-2
ELSE
move.w d0,d1
drop
ENDC
IF LSF_udiv&LSF_W
LS_CACHE
and.l #$ffff,d0
ELSE
LS_CACHE.l
ENDC
divu d1,d0
ENDC
restore ; result is 16 bit
endm
; div12f
;
; Divide 12-bit fixed point
;
; div12f int16 value / int16 divider -> int16 result
; div12f.l int32 value / int16 divider -> int16 result
div12f macro
LS_FLAGS.\0 div,\1,\2
IF LSF_div&LSF_HAS_ARG
IF LSF_div&LSF_W
LS_CACHE
ext.l d0
ELSE
LS_CACHE.l
ENDC
asl.l #6,d0
asl.l #6,d0
divs \1,d0
ELSE
IF LS_CACHED=0
move.w (a7)+,d1 ; divider is 16-bit
LS_SET LOCAL,LOCAL-2
ELSE
move.w d0,d1
drop
ENDC
IF LSF_div&LSF_W
LS_CACHE
ext.l d0
ELSE
LS_CACHE.l
ENDC
asl.l #6,d0
asl.l #6,d0
divs d1,d0
ENDC
restore ; result is 16 bit
endm
; mod
;
; Get remainer from division
;
; mod int16 value % int16 divider -> int16 result
; mod.l int32 value % int16 divider -> int16 result
mod macro
LS_FLAGS.\0 mod,\1,\2
IF LSF_mod&LSF_W
div \1,\2
ELSE
div.l \1,\2
ENDIF
swap d0
endm
; add_to
;
; Add top of stack to address given in argument
add_ macro
LS_ARITHMETIC_BASE.\0 add,\1,\2
endm
sub_ macro
LS_ARITHMETIC_BASE_2.\0 sub,\1,\2
endm
inc macro
IFC \0,L
IFNB \1
add.L #1,\1
ELSE
add_.L #1
ENDC
ELSE
IFNB \1
add.w #1,\1
ELSE
add_ #1
ENDC
ENDC
endm
; mul
;
; Multiply
;
; mul int16 value * int16 multiplier -> int16 result
; mul.l int16 value * int16 multiplier -> int32 result
mul macro
LS_FLAGS.\0 mul,\1,\2
LS_CACHE
IF LSF_mul&LSF_HAS_ARG
muls \1,d0
ELSE
muls (a7)+,d0
LS_SET LOCAL,LOCAL-2
ENDC
IF LSF_mul&LSF_L
LS_SET LS_CACHED,4 ; return value for mul.l is int32
ENDC
endm
; mul12f
;
; Multiply 12-bit fixed point
;
; mul12f int16 value * int16 multiplier -> int16 result
; mul12f.l int16 value * int16 multiplier -> int32 result
mul12f macro
LS_FLAGS.\0 mul12f,\1,\2
mul.l \1
asr.l #6,d0
asr.l #6,d0
IF LSF_mul12f&LSF_W
restore ; cache is now 16-bit
ENDC
endm
; square12f
;
; Multiply 12-bit fixed point value by itself
square12f macro
LS_FLAGS square12f,\1,\2
IF LSF_square12f&LSF_HAS_ARG
ldc \1
ELSE
LS_CACHE
ENDC
IF LSF_square12f&LSF_W
muls d0,d0
asr.l #6,d0
asr.l #6,d0
ELSE
muls d0,d0
asr.l #6,d0
asr.l #6,d0
restore.l
ENDC
endm
and_ macro
LS_ARITHMETIC_BASE.\0 and,\1
endm
or_ macro
LS_ARITHMETIC_BASE.\0 or,\1
endm
xor_ macro
LS_ARITHMETIC_BASE_3.\0 eor,\1
endm
asl_ macro
LS_ROT_BASE.\0 asl,\1,\2
endm
asr_ macro
LS_ROT_BASE.\0 asr,\1,\2
endm
lsl_ macro
LS_ROT_BASE.\0 lsl,\1,\2
endm
lsr_ macro
LS_ROT_BASE.\0 lsr,\1,\2
endm
rol_ macro
LS_ROT_BASE.\0 rol,\1,\2
endm
ror_ macro
LS_ROT_BASE.\0 ror,\1,\2
endm
; neg
;
; Negate top of stack.
neg_ macro
LS_ARITHMETIC_S_BASE.\0 neg,\1,\2
endm
; not
;
; Logical not top of stack.
not_ macro
LS_ARITHMETIC_S_BASE.\0 not,\1,\2
endm
abs macro
LS_FLAGS.\0 abs,\1,\2
IF LSF_abs&LSF_W
IF LSF_abs&LSF_HAS_ARG
ldc \1
ELSE
LS_CACHE
ENDC
tst.w d0
ELSE
IF LSF_abs&LSF_HAS_ARG
ldc.l \1
ELSE
LS_CACHE.l
ENDC
tst.l d0
ENDC
bpl.b *+4
IF LSF_abs&LSF_W
neg.w d0
ELSE
neg.l d0
ENDC
endm
LS_MINMAX_HEADER macro
LS_FLAGS.\0 minmax,\1,\2
IF LSF_minmax&LSF_HAS_ARG
IF LSF_minmax&LSF_W
ldc \1
ELSE
ldc.l \1
ENDC
ENDC
IF LSF_minmax&LSF_W
LS_CACHE
cmp.w (a7),d0
ELSE
LS_CACHE.l
cmp.l (a7),d0
ENDC
LS_SET LOCAL,LOCAL-(LSF_minmax&LSF_SIZE_MASK)
endm
LS_MINMAX_DROP_TOP macro
IF LSF_minmax&LSF_W
move.w (a7)+,d0
ELSE
move.l (a7)+,d0
ENDC
endm
LS_MINMAX_DROP_2ND macro
addq #LSF_minmax&LSF_SIZE_MASK,a7
endm
LS_MINMAX_EXIT macro
dc.w $6002 ; asmone workaround branch BRA.b
endm
LS_MINMAX_BGT macro
dc.w $6e04 ; asmone workaround branch BGT.b
endm
LS_MINMAX_BHI macro
dc.w $6204 ; asmone workaround branch BHI.b
endm
; min
;
; Get minimum value
min macro
LS_MINMAX_HEADER.\0 \1,\2
LS_MINMAX_BGT
LS_MINMAX_DROP_2ND
LS_MINMAX_EXIT
LS_MINMAX_DROP_TOP
endm
; umin
;
; Get minimum value (unsigned)
umin macro
LS_MINMAX_HEADER.\0 \1,\2
LS_MINMAX_BHI
LS_MINMAX_DROP_2ND
LS_MINMAX_EXIT
LS_MINMAX_DROP_TOP
endm
; max
;
; Get maximum value
max macro
LS_MINMAX_HEADER.\0 \1,\2
LS_MINMAX_BGT
LS_MINMAX_DROP_TOP
LS_MINMAX_EXIT
LS_MINMAX_DROP_2ND
endm
; umax
;
; Get maximum value (unsigned)
umax macro
LS_MINMAX_HEADER.\0 \1,\2
LS_MINMAX_BHI
LS_MINMAX_DROP_TOP
LS_MINMAX_EXIT
LS_MINMAX_DROP_2ND
endm