h8538f.slaspec

define endian=big;

define alignment=2;

define space ram type=ram_space size=2 default;
define space register type=register_space size=1;

define register offset=0x0 size=2 [R0 R1 R2 R3 R4 R5 FP SP PC];

# The SR has 8 flags.
# Taking a cue from x86, define pseudo-registers for each flag
# separately; otherwise decompilation is a mess
define register offset=0x20 size=1 [T I2 I1 I0 N Z V C];

define register offset=0x30 size=1 [CP DP EP TP BR];

# Address mode stuff
# see https://downloads.laboratoryb.org/insight/documents/H8/H8_500_programming.pdf#page=27
define token data8 (8)
    amode  = (0,3)
    asz    = (4,4)   # Literally just Sz from pg27
    arn    = (5,7) # which register
    disp8   = (0,7)
    addr8  = (0,7)
    imm8   = (0,7)
;

define token data16 (16) # For when you have two bytes of address or displacement in your extension
    disp16 = (0,15)
    addr16 = (0,15)
    imm16  = (0,15)
;

define token op (8)
    # No fucking clue what I'd put here to say which operator is used
    op8 = (0,7)
;


:MOV.W is op8=0x5f { }