ERCOV

assembly

[
  "ERCOV [RegSrc0=BasePtr, RegSrc1=LenBytes, RegSrc2=Kind]"
]

block

[]

catalog_indices

[
  60
]

catalog_records

[
  {
    "asm": "ERCOV [RegSrc0=BasePtr, RegSrc1=LenBytes, RegSrc2=Kind]",
    "constraints": [],
    "encoding": [
      {
        "index": 0,
        "mask": "0x06007fff",
        "match": "0x00003031",
        "width_bits": 32
      }
    ],
    "encoding_kind": "L32",
    "fields": [
      {
        "name": "RegSrc0",
        "pieces": [
          {
            "instruction_lsb": 15,
            "value_lsb": 0,
            "width": 5
          }
        ],
        "signedness": "encoding-defined",
        "width": 5
      },
      {
        "name": "RegSrc1",
        "pieces": [
          {
            "instruction_lsb": 20,
            "value_lsb": 0,
            "width": 5
          }
        ],
        "signedness": "encoding-defined",
        "width": 5
      },
      {
        "name": "RegSrc2",
        "pieces": [
          {
            "instruction_lsb": 27,
            "value_lsb": 0,
            "width": 5
          }
        ],
        "signedness": "encoding-defined",
        "width": 5
      }
    ],
    "form_id": "ercov_32_dc0be14a2d8b",
    "length_bits": 32,
    "mnemonic": "ERCOV",
    "semantic_family": "CMD",
    "semantic_group": "Bundle Split",
    "semantic_handler": "RecoverExecutionContext",
    "semantic_summary": "Inventories an extension-owned execution-context recovery family rejected by PTO before operand interpretation or effects.",
    "status": "reserved-in-pto"
  }
]

classification

[
  "lifecycle"
]

contract

{
  "block_composition": [
    "none; ERCOV is not an executable PTO command"
  ],
  "canonical_assembly": [
    "ERCOV [RegSrc0=BasePtr, RegSrc1=LenBytes, RegSrc2=Kind]"
  ],
  "defaults": [
    "No PTO default exists because the complete raw family is reserved and rejected before field interpretation."
  ],
  "encoding_class": "standalone-encoded",
  "examples": [
    "ERCOV [RegSrc0=BasePtr, RegSrc1=LenBytes, RegSrc2=Kind] (reserved in PTO)"
  ],
  "exceptions": [
    "Every matching form raises Fault_IllegalInstruction at the current TPC before register reads, memory access, context recovery, or state changes."
  ],
  "field_contracts": {},
  "field_zero_meanings": {
    "RegSrc0": "Uninterpreted in PTO, including encoded zero.",
    "RegSrc1": "Uninterpreted in PTO, including encoded zero.",
    "RegSrc2": "Uninterpreted in PTO, including encoded zero."
  },
  "legality": [
    "The full family selected by mask 0x06007fff and match 0x00003031 is occupied extension space and is not executable in PTO.",
    "All 32 values of each encoded selector remain collision-protected and PTO must not allocate another instruction in this family."
  ],
  "memory_effects": [
    "none; rejection precedes every memory access"
  ],
  "operands": [
    {
      "field": "RegSrc0",
      "role": "uninterpreted extension field reserved in PTO"
    },
    {
      "field": "RegSrc1",
      "role": "uninterpreted extension field reserved in PTO"
    },
    {
      "field": "RegSrc2",
      "role": "uninterpreted extension field reserved in PTO"
    }
  ],
  "ordering": [
    "Decode and profile rejection precede operand interpretation and every architectural effect."
  ],
  "standalone_opcode": true,
  "state_effects": [
    "none; the form always raises Fault_IllegalInstruction before effects in PTO"
  ]
}

depends_on

[
  "PTO-BLOCK-MODEL-SCHEMA-PROFILE-ENCODING"
]

id

PTO-BLOCK-ERCOV

mnemonic

ERCOV

summary

Inventories an extension-owned execution-context recovery family rejected by PTO before effects.

surface

block

{
  "classification": [
    "lifecycle"
  ],
  "documentation": "docs/block/lifecycle/ERCOV.md",
  "id": "PTO-BLOCK-ERCOV",
  "instruction_contract": {
    "artifact": "spec/evidence/instruction-contract-closure.json",
    "mnemonic": "ERCOV",
    "ndf_clause": "PTO-INST-BLOCK-ERCOV"
  },
  "mnemonic": "ERCOV",
  "readiness_subjects": [
    "ADR-0032",
    "ADR-0052",
    "ADR-0059",
    "ADR-0084"
  ],
  "semantic_tests": [
    "PTO-AVS-BLOCK-ERCOV-RSVD-001"
  ],
  "source": "asl/block/lifecycle/ERCOV.asl",
  "surface": "block",
  "tests": [
    "PTO-AVS-BLOCK-ERCOV-DECODE-001",
    "PTO-AVS-BLOCK-ERCOV-RSVD-001"
  ]
}