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Brooke Vibber 2024-12-31 09:02:42 -08:00
parent 2fcb30b76a
commit d2f41f9644
1 changed files with 6 additions and 16 deletions
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22
mandel.s
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@ -425,14 +425,8 @@ viewport_oy:
round16 arg ; 11-27 cycles
.endmacro
.macro imul16_round dest, arg1, arg2, shift
copy16 FR0, arg1 ; 12 cyc
copy16 FR1, arg2 ; 12 cyc
jsr imul16_func ; ? cyc
shift_round_16 FR2, shift ; 103-119 cycles for shift=4
copy16 dest, FR2 + 2 ; 12 cyc
.endmacro
; input: arg1, arg2 as fixed4.12
; output: dest as fixed8.24
.macro imul16 dest, arg1, arg2
copy16 FR0, arg1 ; 12 cyc
copy16 FR1, arg2 ; 12 cyc
@ -440,20 +434,16 @@ viewport_oy:
copy32 dest, FR2 ; 24 cyc
.endmacro
.macro sqr16_round dest, arg, shift
;imul16_round dest, arg, arg, shift
copy16 FR0, arg ; 12 cyc
jsr sqr16_func ; ? cyc
shift_round_16 FR2, shift ; 103-119 cycles for shift=4
copy16 dest, FR2 + 2 ; 12 cyc
.endmacro
; input: arg as fixed4.12
; output: dest as fixed8.24
.macro sqr16 dest, arg
copy16 FR0, arg ; 12 cyc
jsr sqr16_func ; ? cyc
copy32 dest, FR2 ; 24 cyc
.endmacro
; input: arg as u8
; output: dest as u16
; clobbers a, x
.macro sqr8 dest, arg
ldx arg