106 lines
3.3 KiB
JSON
106 lines
3.3 KiB
JSON
{
|
|
"structures": {
|
|
"main": {
|
|
"bits": 32,
|
|
"ranges": {
|
|
"31-28": {
|
|
"name": "cond"
|
|
},
|
|
"27": {
|
|
"name": "0"
|
|
},
|
|
"26": {
|
|
"name": "1"
|
|
},
|
|
"25": {
|
|
"name": "I"
|
|
},
|
|
"24": {
|
|
"name": "P",
|
|
"description": "pre / post indexing bit",
|
|
"values": {
|
|
"0": "post, add offset after transfer",
|
|
"1": "pre, add offset before transfer"
|
|
}
|
|
},
|
|
"23": {
|
|
"name": "U",
|
|
"description": "up / down bit",
|
|
"values": {
|
|
"0": "down, subtract offset from base",
|
|
"1": "up, addition offset to base"
|
|
}
|
|
},
|
|
"22": {
|
|
"name": "B",
|
|
"description": "byte / word bit",
|
|
"values": {
|
|
"0": "transfer word quantity",
|
|
"1": "transfer byte quantity"
|
|
}
|
|
},
|
|
"21": {
|
|
"name": "W",
|
|
"description": "write-back bit",
|
|
"values": {
|
|
"0": "no write-back",
|
|
"1": "write address into base"
|
|
}
|
|
},
|
|
"20": {
|
|
"name": "L",
|
|
"description": "load / store bit",
|
|
"values": {
|
|
"0": "store to memory",
|
|
"1": "load from memory"
|
|
}
|
|
},
|
|
"19-16": {
|
|
"name": "Rn",
|
|
"description": "base register"
|
|
},
|
|
"15-12": {
|
|
"name": "Rd",
|
|
"description": "source / destination register"
|
|
},
|
|
"11-0": {
|
|
"name": "offset",
|
|
"depends-on": "25",
|
|
"values": {
|
|
"0": {
|
|
"description": "offset is an immediate value",
|
|
"structure": "immediateOffset"
|
|
},
|
|
"1": {
|
|
"description": "offset is a register",
|
|
"structure": "registerOffset"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
},
|
|
"immediateOffset": {
|
|
"bits": 12,
|
|
"ranges": {
|
|
"11-0": {
|
|
"name": "12-bit immediate offset",
|
|
"description": "unsigned number"
|
|
}
|
|
}
|
|
},
|
|
"registerOffset": {
|
|
"bits": 12,
|
|
"ranges": {
|
|
"11-4": {
|
|
"name": "shift",
|
|
"description": "shift applied to Rm"
|
|
},
|
|
"3-0": {
|
|
"name": "Rm",
|
|
"description": "offset register"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|