RGBDS syntax updates (#905)

New MACRO and DEF syntax

home/decompress.asm

@@ -19,42 +19,42 @@ Decompress::
 
 ; This function decompresses lz-compressed data from hl to de.
 
-LZ_END EQU $ff ; Compressed data is terminated with $ff.
+DEF LZ_END EQU $ff ; Compressed data is terminated with $ff.
 
 ; A typical control command consists of:
 
-LZ_CMD EQU %11100000 ; command id (bits 5-7)
-LZ_LEN EQU %00011111 ; length n   (bits 0-4)
+DEF LZ_CMD EQU %11100000 ; command id (bits 5-7)
+DEF LZ_LEN EQU %00011111 ; length n   (bits 0-4)
 
 ; Additional parameters are read during command execution.
 
 ; Commands:
 
-LZ_LITERAL   EQU 0 << 5 ; Read literal data for n bytes.
-LZ_ITERATE   EQU 1 << 5 ; Write the same byte for n bytes.
-LZ_ALTERNATE EQU 2 << 5 ; Alternate two bytes for n bytes.
-LZ_ZERO      EQU 3 << 5 ; Write 0 for n bytes.
+DEF LZ_LITERAL   EQU 0 << 5 ; Read literal data for n bytes.
+DEF LZ_ITERATE   EQU 1 << 5 ; Write the same byte for n bytes.
+DEF LZ_ALTERNATE EQU 2 << 5 ; Alternate two bytes for n bytes.
+DEF LZ_ZERO      EQU 3 << 5 ; Write 0 for n bytes.
 
 ; Another class of commands reuses data from the decompressed output.
-LZ_RW        EQU 2 + 5 ; bit
+DEF LZ_RW        EQU 2 + 5 ; bit
 
 ; These commands take a signed offset to start copying from.
 ; Wraparound is simulated.
 ; Positive offsets (15-bit) are added to the start address.
 ; Negative offsets (7-bit) are subtracted from the current position.
 
-LZ_REPEAT    EQU 4 << 5 ; Repeat n bytes from the offset.
-LZ_FLIP      EQU 5 << 5 ; Repeat n bitflipped bytes.
-LZ_REVERSE   EQU 6 << 5 ; Repeat n bytes in reverse.
+DEF LZ_REPEAT    EQU 4 << 5 ; Repeat n bytes from the offset.
+DEF LZ_FLIP      EQU 5 << 5 ; Repeat n bitflipped bytes.
+DEF LZ_REVERSE   EQU 6 << 5 ; Repeat n bytes in reverse.
 
 ; If the value in the count needs to be larger than 5 bits,
 ; LZ_LONG can be used to expand the count to 10 bits.
-LZ_LONG      EQU 7 << 5
+DEF LZ_LONG      EQU 7 << 5
 
 ; A new control command is read in bits 2-4.
 ; The top two bits of the length are bits 0-1.
 ; Another byte is read containing the bottom 8 bits.
-LZ_LONG_HI   EQU %00000011
+DEF LZ_LONG_HI   EQU %00000011
 
 ; In other words, the structure of the command becomes
 ; 111xxxyy yyyyyyyy