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-rw-r--r--src/rops.h72
1 files changed, 23 insertions, 49 deletions
diff --git a/src/rops.h b/src/rops.h
index dc5409f..45e5b7c 100644
--- a/src/rops.h
+++ b/src/rops.h
@@ -5,35 +5,25 @@
Raster Operations macros
*/
+#define ROP_CLEARTOP(a) \
+ " bic " #a ", " #a ", #0b01000000000000000 \n"
// -------------
// RGB_555
// a.red = a.red - b.red
// a.blue = a.blue - b.blue
// a.green = a.green - b.green
-/*
-#define ROP_SUB(a, b) \
- " bics " #b ", " #b ", #0b00000100000100000 \n"\
- " orr " #a ", " #a ", #0b00000100000100000 \n"\
- " orr " #a ", " #a ", #0b10000000000000000 \n"\
- " sub " #a ", " #a ", " #b " \n"\
- " tst " #a ", #0b00000000000100000 \n"\
- " biceq " #a ", " #a ", #0b00000000000011111 \n"\
- " tst " #a ", #0b00000100000000000 \n"\
- " biceq " #a ", " #a ", #0b00000011111100000 \n"\
- " tst " #a ", #0b10000000000000000 \n"\
- " biceq " #a ", " #a ", #0b01111100000000000 \n"
-*/
#define ROP_SUB(a, b) \
" bics " #b ", " #b ", #0b00000010000100000 \n"\
" beq 999f \n"\
" orr " #a ", " #a ", #0b00000010000100000 \n"\
- " orr " #a ", " #a ", #(1 << 31) \n"\
- " subs " #a ", " #a ", " #b " \n"\
- " bicpl " #a ", " #a ", #0b00111110000000000 \n"\
- " tst " #a ", #0b00000000000100000 \n"\
+ " orr " #a ", " #a ", #(1 << 31) \n"\
+ " sub " #a ", " #a ", " #b " \n"\
+ " tst " #a ", #0b00000000000100000 \n"\
" biceq " #a ", " #a ", #0b00000000000011111 \n"\
- " tst " #a ", #0b00000010000000000 \n"\
+ " tst " #a ", #0b00000010000000000 \n"\
" biceq " #a ", " #a ", #0b00000001111100000 \n"\
+ " tst " #a ", #0b01000000000000000 \n"\
+ " bicne " #a ", " #a ", #0b01111110000000000 \n"\
"999:\n"
@@ -43,25 +33,6 @@
// a.red = (a.red - b.red) / 2
// a.blue = (a.blue - b.blue) / 2
// a.green = (a.green - b.green) / 2
-/*
-#define ROP_SUB1_2(a, b) \
- " movne " #a ", " #a ", lsr #1 \n"\
- " bicne " #a ", " #a ", #0b00000010000010000 \n"\
- " movne " #b ", " #b ", lsr #1 \n"\
- " bicne " #b ", " #b ", #0b00000010000010000 \n"\
- \
- " bic " #b ", " #b ", #0b00000100000100000 \n"\
- " orr " #a ", " #a ", #0b00000100000100000 \n"\
- " orr " #a ", " #a ", #0b10000000000000000 \n"\
- " sub " #a ", " #a ", " #b " \n"\
- " tst " #a ", #0b00000000000100000 \n"\
- " biceq " #a ", " #a ", #0b00000000000011111 \n"\
- " tst " #a ", #0b00000100000000000 \n"\
- " biceq " #a ", " #a ", #0b00000011111100000 \n"\
- " tst " #a ", #0b10000000000000000 \n"\
- " biceq " #a ", " #a ", #0b01111100000000000 \n"
-*/
-
#define ROP_SUB1_2(a, b) \
" movne " #a ", " #a ", lsr #1 \n"\
" bicne " #a ", " #a ", #0b00000001000010000 \n"\
@@ -69,15 +40,16 @@
" bicne " #b ", " #b ", #0b00000001000010000 \n"\
\
" bics " #b ", " #b ", #0b00000010000100000 \n"\
- " beq 999f \n"\
+ " beq 999f \n"\
" orr " #a ", " #a ", #0b00000010000100000 \n"\
- " orr " #a ", " #a ", #(1 << 31) \n"\
+ " orr " #a ", " #a ", #(1 << 31) \n"\
" subs " #a ", " #a ", " #b " \n"\
- " bicpl " #a ", " #a ", #0b00111110000000000 \n"\
- " tst " #a ", #0b00000000000100000 \n"\
+ " tst " #a ", #0b00000000000100000 \n"\
" biceq " #a ", " #a ", #0b00000000000011111 \n"\
- " tst " #a ", #0b00000010000000000 \n"\
+ " tst " #a ", #0b00000010000000000 \n"\
" biceq " #a ", " #a ", #0b00000001111100000 \n"\
+ " tst " #a ", #0b01000000000000000 \n"\
+ " bicne " #a ", " #a ", #0b01111110000000000 \n"\
"999:\n"
@@ -91,12 +63,13 @@
" beq 999f \n"\
" bic " #a ", " #a ", #0b00000010000100000 \n"\
" add " #a ", " #a ", " #b " \n"\
- " tst " #a ", #0b00000000000100000 \n"\
+ " tst " #a ", #0b00000000000100000 \n"\
" orrne " #a ", " #a ", #0b00000000000011111 \n"\
- " tst " #a ", #0b00000010000000000 \n"\
+ " tst " #a ", #0b00000010000000000 \n"\
" orrne " #a ", " #a ", #0b00000001111100000 \n"\
- " tst " #a ", #0b01000000000000000 \n"\
+ " tst " #a ", #0b01000000000000000 \n"\
" orrne " #a ", " #a ", #0b00111110000000000 \n"\
+ ROP_CLEARTOP(a) \
"999:\n"
// -------------
@@ -112,12 +85,13 @@
" bicne " #b ", " #b ", #0b00000100001000000 \n"\
" add " #a ", " #a ", " #b " \n"\
" movne " #a ", " #a ", lsr #1 \n"\
- " tst " #a ", #0b00000000000100000 \n"\
+ " tst " #a ", #0b00000000000100000 \n"\
" orrne " #a ", " #a ", #0b00000000000011111 \n"\
- " tst " #a ", #0b00000010000000000 \n"\
+ " tst " #a ", #0b00000010000000000 \n"\
" orrne " #a ", " #a ", #0b00000001111100000 \n"\
- " tst " #a ", #0b01000000000000000 \n"\
- " orrne " #a ", " #a ", #0b00111110000000000 \n"
+ " tst " #a ", #0b01000000000000000 \n"\
+ " orrne " #a ", " #a ", #0b00111110000000000 \n"\
+ ROP_CLEARTOP(a)
typedef struct {