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