{
  "name": "gsp_ctrl",
  "size": 400,
  "fields": [
    {
      "name": "magic",
      "offset": 0,
      "fmt": "u32",
      "note": "GSP-like control block magic 0x47535031"
    },
    {
      "name": "version",
      "offset": 4,
      "fmt": "u32"
    },
    {
      "name": "state",
      "offset": 8,
      "fmt": "u32",
      "enum": {
        "0": "S0",
        "1": "S1",
        "2": "S2",
        "3": "S3"
      }
    },
    {
      "name": "heartbeat",
      "offset": 12,
      "fmt": "u32"
    },
    {
      "name": "rpc_count",
      "offset": 16,
      "fmt": "u64"
    },
    {
      "name": "last_rpc",
      "offset": 24,
      "fmt": "u64"
    },
    {
      "name": "mailbox",
      "offset": 32,
      "fmt": "u64",
      "enum": {
        "0": "idle",
        "1": "PING",
        "2": "ECHO",
        "3": "FILL",
        "4": "SUM",
        "5": "STATE",
        "6": "FAULT"
      }
    },
    {
      "name": "arg0",
      "offset": 40,
      "fmt": "u64"
    },
    {
      "name": "arg1",
      "offset": 48,
      "fmt": "u64"
    },
    {
      "name": "arg2",
      "offset": 56,
      "fmt": "u64"
    },
    {
      "name": "result",
      "offset": 64,
      "fmt": "u64"
    },
    {
      "name": "buf",
      "offset": 72,
      "fmt": "bytes",
      "size": 256
    },
    {
      "name": "handler_count",
      "offset": 328,
      "fmt": "u64"
    },
    {
      "name": "handlers",
      "offset": 336,
      "fmt": "u64",
      "count": 8
    }
  ]
}