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PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY

PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY

ASL 伪代码

下面直接显示完整的 ASL 所有者。

// PTO-UNIT: {"id":"PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY","surface":"arch","classification":["profile","trap-context-recovery"],"depends_on":["PTO-ARCH-PROFILE-REFERENCE-PROFILE"]}implementation func TrapContextRecoverable(target: AccessControlRing)    => booleanbegin    let control = PTOv0ReadContextRegister(target, 0x0f40);    let ecstate = PTOv0ReadContextRegister(target, 0x0f00);    let recovered_bpc = PTOv0ReadContextRegister(target, 0x0f41);    let recovered_tpc = PTOv0ReadContextRegister(target, 0x0f43);    return _TrapContexts[[target]].valid &&           control[4] == '1' &&           PTOv0EBARGControlLegal(control) &&           control[3:0] == ecstate[3:0] &&           recovered_bpc[0] == '0' &&           recovered_tpc[0] == '0';end;
implementation func RecoverTrapContext(target: AccessControlRing) => booleanbegin    if !TrapContextRecoverable(target) then        return FALSE;    end;    var control = PTOv0ReadContextRegister(target, 0x0f40);    let ecstate = PTOv0ReadContextRegister(target, 0x0f00);    let recovered_bpc = PTOv0ReadContextRegister(target, 0x0f41);    let recovered_tpc = PTOv0ReadContextRegister(target, 0x0f43);    WriteTPC(recovered_tpc);    WriteBPC(recovered_bpc);    _SystemRegisters.core_state = ecstate;    _BundleArgument = _TrapContexts[[target]].bundle_argument;    _CommitArgument = _TrapContexts[[target]].commit_argument;    _BundleActive = control[5] == '1';    _BundleBodyActive = control[6] == '1';    _BundleCommitTargetSet =        _TrapContexts[[target]].bundle_commit_target_set;    _BundleConditionSet =        _TrapContexts[[target]].bundle_condition_set;    _SystemBlockTerminalPending =        _TrapContexts[[target]].system_block_terminal_pending;    _BARG.block_type = PTOv0BundleKindOf(control[10:7]);    _BARG.transfer_type = PTOv0BundleTransferOf(control[13:11]);    _BARG.taken = control[14] == '1';    _BARG.bpcn = PTOv0ReadContextRegister(target, 0x0f42);    _FrameStackReturnTarget =        _TrapContexts[[target]].frame_stack_return_target;    _ReturnAddress = PTOv0ReadContextRegister(target, 0x0f44);    _BundleArgumentKind = _TrapContexts[[target]].bundle_argument_kind;    _BundleSequentialPC = _TrapContexts[[target]].bundle_sequential_pc;    _BundleOperation = _TrapContexts[[target]].bundle_operation;    _BundleDimensions = _TrapContexts[[target]].bundle_dimensions;    _BundleDimensionPresent =        _TrapContexts[[target]].bundle_dimension_present;    _BundleScalarBindings = _TrapContexts[[target]].bundle_scalar_bindings;    _BundleTileBindings = _TrapContexts[[target]].bundle_tile_bindings;    _BundleSharedBindings = _TrapContexts[[target]].bundle_shared_bindings;    _BundleRangeGroup = _TrapContexts[[target]].bundle_range_group;    _BundleZeroParticipationSeen =        _TrapContexts[[target]].bundle_zero_participation_seen;    _BundleControlAttributes =        _TrapContexts[[target]].bundle_control_attributes;    _BundleDataAttributes = _TrapContexts[[target]].bundle_data_attributes;    _BundleDataAttributesPresent =        _TrapContexts[[target]].bundle_data_attributes_present;    _BundleHint = _TrapContexts[[target]].bundle_hint;    _BundleFixedPointAttributes =        _TrapContexts[[target]].bundle_fixed_point_attributes;    _LocalGenerations = _TrapContexts[[target]].local_generations;    _SharedGenerations = _TrapContexts[[target]].shared_generations;    _BundleExecutionDomainToken =        _TrapContexts[[target]].bundle_execution_domain_token;    _MemoryCopyTemplate = _TrapContexts[[target]].memory_copy_template;    _FrameTemplate = _TrapContexts[[target]].frame_template;    for index = 0 to PTO_TEMPORARY_QUEUE_DEPTH - 1 do        _TQueue[[index]] = PTOv0ReadContextRegister(target, 0x0f45 + index);        _UQueue[[index]] = PTOv0ReadContextRegister(target, 0x0f49 + index);    end;    _TQueueValid = _TrapContexts[[target]].t_queue_valid;    _UQueueValid = _TrapContexts[[target]].u_queue_valid;    _PredicateRegisters = _TrapContexts[[target]].predicates;    _CurrentACR = UInt(ecstate[3:0]) as AccessControlRing;    control[4] = '0';    PTOv0WriteContextRegister(target, 0x0f40, control);    _TrapContexts[[target]].valid = FALSE;    return TRUE;end;

架构行为

目的与范围

用途与范围

本单元实现 PTO v0 对已保存陷阱上下文的验证与恢复。恢复是经过检查且只能使用一次的状态转换：无效封装返回假，并且不恢复执行状态。

概念与架构状态

可恢复性检查

TrapContextRecoverable 要求保存的上下文有效、控制位 4 已设置、EBARG 控制合法、控制值与 ECSTATE 的低 4 位 ACR 相匹配，并且恢复出的 BPC 与 TPC 都是偶数。它读取上下文寄存器 0x0f40、0x0f00、0x0f41 与 0x0f43。

规则与交互

恢复顺序

RecoverTrapContext 首先再次执行可恢复性检查。成功后，它从保存的上下文与上下文寄存器恢复 TPC、BPC、核心状态、指令束参数与活动状态、指令束描述符与绑定、代次状态、模板、队列、谓词、返回地址以及当前 ACR。

边界与未定义范围

单次使用与失败边界

验证失败会在恢复前返回假。成功恢复会清除控制位 4，写回更新后的控制寄存器，把保存的上下文置为无效，并返回真。因此第二次恢复需要重新保存的有效上下文。

使用示例

示例性恢复过程

本示例块只用于帮助阅读：先应用上文规则，再到规范 ASL 所有者中确认结果。它不会增加任何架构契约。

相关所有者

  • 参考配置档定义此处使用的 PTO v0 上下文寄存器编码辅助函数。
  • 故障精度与陷阱上下文状态单元拥有恢复之前的入口和保存状态创建过程。

NDF 条款

正文来自 owning ASL。拖拽或按钮只临时改变当前页面显示顺序。

No NDF clause is attached to this unit.

Evidence index

8 matching entries

Executable evidence1
  • PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY compiles as an independent normative unit
    1. surfaceARCH
    2. ownerPTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY
    3. categorySTATIC-INVARIANT
    4. case001
    Show exact test source
    Sources and references
    Complete stable ID
    PTO-AVS-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY-STATIC-001
    Path
    tests/asl/arch/profile/trap-context-recovery/arch-static-trap-context-recovery-contract-001.asl
    Kind / role
    static-invariant
    Pass condition
    the complete model and this unit's static invariant compile
    SHA-256
    11dd4c20522e3d9795355802c04340394d768c55cb872bdfc12dbad8956550be
    Open exact source ↗ for PTO-AVS-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY-STATIC-001
Commit-scoped evidence5
  • spec/evidence/release-traceability-readiness.json · closedPTO-EVIDENCE-RELEASE-TRACEABILITY
    Sources and references
    Complete stable ID
    PTO-EVIDENCE-RELEASE-TRACEABILITY
    Path
    spec/evidence/release-traceability-readiness.json
    Kind / role
    ASL/NDF/documentation/AVS traceability
    SHA-256
    c7327021d39dc67ac5564bc55073b3870a397d79ac8d9648284d56e33bc14a3e
    Open exact source ↗ for PTO-EVIDENCE-RELEASE-TRACEABILITY
  • spec/evidence/instruction-contract-closure.json · closedPTO-EVIDENCE-INSTRUCTION-CONTRACT-CLOSURE
    Sources and references
    Complete stable ID
    PTO-EVIDENCE-INSTRUCTION-CONTRACT-CLOSURE
    Path
    spec/evidence/instruction-contract-closure.json
    Kind / role
    mnemonic and encoding contract closure
    SHA-256
    3ef2bb62421c79dff8fa77a1c7983923b523244b8090812883ef81286ca8106a
    Open exact source ↗ for PTO-EVIDENCE-INSTRUCTION-CONTRACT-CLOSURE
  • spec/evidence/architecture-readiness.json · openPTO-EVIDENCE-ARCHITECTURE-READINESS
    Sources and references
    Complete stable ID
    PTO-EVIDENCE-ARCHITECTURE-READINESS
    Path
    spec/evidence/architecture-readiness.json
    Kind / role
    architecture maturity and blockers
    SHA-256
    4b0b85199101251bea744e0f3591cc31906909dc80d5ab651c417a936036a004
    Open exact source ↗ for PTO-EVIDENCE-ARCHITECTURE-READINESS
  • spec/evidence/release-gate-readiness.json · ready-for-exact-head-verificationPTO-EVIDENCE-RELEASE-GATE-READINESS
    Sources and references
    Complete stable ID
    PTO-EVIDENCE-RELEASE-GATE-READINESS
    Path
    spec/evidence/release-gate-readiness.json
    Kind / role
    exact-head gate readiness
    SHA-256
    a0f4d2b6920c08981ea55fd8ef820708a40d4feb5402c5150e8e9ab532d84ce0
    Open exact source ↗ for PTO-EVIDENCE-RELEASE-GATE-READINESS
  • spec/release-manifest.json · draftPTO-EVIDENCE-RELEASE-MANIFEST
    Sources and references
    Complete stable ID
    PTO-EVIDENCE-RELEASE-MANIFEST
    Path
    spec/release-manifest.json
    Kind / role
    release content and encoding fingerprints
    SHA-256
    1a64c109ed7a90351c41e2a418b3c0ebaf8ad975838986d2101385186b85c0d8
    Open exact source ↗ for PTO-EVIDENCE-RELEASE-MANIFEST
Decision history2
  • PTO v0 concrete reference profile · accepted
    1. decision recordADR
    2. case0005

    Decision record

    Loading ADR-0005…

    Sources and references
    Complete stable ID
    ADR-0005
    Path
    docs/status/decisions/0005-pto-v0-concrete-reference-profile.md
    Affected units
    PTO-ARCH-PROFILE-APPLICABILITY, PTO-ARCH-PROFILE-E8M0-CONVERSION, PTO-ARCH-PROFILE-EXTENSION-FIRST-USE, PTO-ARCH-PROFILE-MATRIX-POSTPROCESS, PTO-ARCH-PROFILE-MATRIX-QUANTIZATION, PTO-ARCH-PROFILE-REFERENCE-PROFILE, PTO-ARCH-PROFILE-REFERENCE-QUANTIZATION, PTO-ARCH-PROFILE-RESET, PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY
    Affected NDF
    PTO-ARCH-EXTENSION-FIRST-USE-PROFILE-001, PTO-MATRIX-POSTPROCESS-BITEXACT-001, PTO-MATRIX-QUANT-BITEXACT-001, PTO-TCVT-E8M0-PROFILE-001
    SHA-256
    a83528c2fc744cc120c2a0a32c82410059638ea88936fa65ac0eb36a0274d87c
    Open exact decision source ↗ for ADR-0005
  • B.SUBVIEW and B.ASSEMBLE range-modifier association · accepted
    1. decision recordADR
    2. case0098

    Decision record

    Loading ADR-0098…

    Sources and references
    Complete stable ID
    ADR-0098
    Path
    docs/status/decisions/0098-b-range-modifiers.md
    Affected units
    PTO-ARCH-PROFILE-RESET, PTO-BLOCK-B-IOT, PTO-BLOCK-B-IOS, PTO-BLOCK-B-SUBVIEW, PTO-BLOCK-B-ASSEMBLE, PTO-BLOCK-MODEL-DISPATCH-COMMANDS, PTO-BLOCK-MODEL-OPERANDS-RANGE-MODIFIERS, PTO-BLOCK-MODEL-OPERANDS-SHARED-BINDINGS, PTO-BLOCK-MODEL-OPERANDS-TILE-BINDINGS, PTO-BLOCK-MODEL-STATE-CONTROL-STATE, PTO-BLOCK-MODEL-STATE-DESCRIPTOR-STATE, PTO-BLOCK-MODEL-STATE-TYPES, PTO-ARCH-DATA-TYPES-TRAP-CONTEXT, PTO-ARCH-PROFILE-REFERENCE-PROFILE, PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY, PTO-ARCH-STATE-TRAP-CONTEXT, PTO-BLOCK-MODEL-DISPATCH-TILE-EXECUTION, PTO-BLOCK-MODEL-DISPATCH-TILE-SCHEMA, PTO-BLOCK-MODEL-FAULTS-ROLLBACK, PTO-BLOCK-MODEL-LIFECYCLE-RESET, PTO-BLOCK-MODEL-OPERANDS-LOCAL-GENERATION, PTO-BLOCK-MODEL-OPERANDS-SHARED-GENERATION, PTO-BLOCK-MODEL-OPERANDS-PORTABLE-CARRIERS, PTO-BLOCK-MODEL-OPERANDS-SUBVIEW-DESCRIPTOR, PTO-BLOCK-MODEL-STATE-SHARED-GENERATION, PTO-TILE-MODEL-LEGALITY-MATRIX-POSTPROCESS
    Affected NDF
    PTO-B-IOT-STREAM-001, PTO-B-IOS-SHARED-STATE-001, PTO-B-SUBVIEW-RANGE-001, PTO-B-ASSEMBLE-RANGE-001, PTO-B-SUBVIEW-DESCRIPTOR-001, PTO-BLOCK-TILE-OPERATION-APPLICABILITY-001, PTO-B-ASSEMBLE-LOCAL-GENERATION-001, PTO-B-ASSEMBLE-SHARED-GENERATION-001, PTO-B-ASSEMBLE-SHARED-STANDALONE-001, PTO-B-ASSEMBLE-CONSUMER-READINESS-001, PTO-B-ASSEMBLE-SPECULATION-001, PTO-B-ASSEMBLE-PRODUCER-EFFECT-ELIGIBILITY-001
    SHA-256
    e194ccc6b6922fd4b65066b533f5e4b0eba094e099970059bca8e25b4e466fba
    Open exact decision source ↗ for ADR-0098

Unit metadata

Open 4 generated metadata fields
id
PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY
surface
arch
classification
[
  "profile",
  "trap-context-recovery"
]
depends_on
[
  "PTO-ARCH-PROFILE-REFERENCE-PROFILE"
]
Open generated traceability record
{
  "classification": [
    "profile",
    "trap-context-recovery"
  ],
  "documentation": "docs/arch/profile/trap-context-recovery.md",
  "id": "PTO-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY",
  "mnemonic": null,
  "readiness_subjects": [
    "ADR-0005",
    "ADR-0098"
  ],
  "semantic_tests": [],
  "source": "asl/arch/profile/trap-context-recovery.asl",
  "surface": "arch",
  "tests": [
    "PTO-AVS-ARCH-PROFILE-TRAP-CONTEXT-RECOVERY-STATIC-001"
  ]
}

来源与发布信息

展开 commit、路径、hash、版本和规范所有者
发布
0.58.5 · 候选发布
Commit
7dc8b7e5b121d2b2499a2273bebff29e2cd86812
原始 ASL
asl/arch/profile/trap-context-recovery.asl
ASL SHA-256
6c87ee4d53ed316f6ad72768ac84f67bcdf19c3af52dd96f3eb97eddc07c1357
生成文档
docs/site/i18n/zh-CN/docusaurus-plugin-content-docs-reference/current/arch/profile/trap-context-recovery.md · 已融合到当前页面
文档 SHA-256
db504decb18c482a88869599526eed6ab80d0033928c29ba532b3f7718659991

精确所有者