操作数与参数
RegDst- absolute GPR destination
SrcL- left absolute GPR source
SrcR- right absolute GPR source
SrcRType- right-source modifier selector
CMP.NE - Compare scalar operands and write the encoded boolean result.
PTO-SCALAR-CMP-NEcmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd}| 字段 | 位宽 | 有符号性 | 架构角色 | 编码零 |
|---|---|---|---|---|
RegDst | 5 | encoding-defined | absolute GPR destination | Encoded zero names the architectural zero GPR. |
SrcL | 5 | encoding-defined | left absolute GPR source | Encoded zero names the architectural zero GPR. |
SrcR | 5 | encoding-defined | right absolute GPR source | Encoded zero names the architectural zero GPR. |
SrcRType | 2 | encoding-defined | right-source modifier selector | Encoded zero selects value zero of the right-source modifier selector. |
Loading WaveDrom diagram… The encoding table and WaveJSON remain available below.
| Decoded item | Bit range | Value |
|---|---|---|
| Constant | 31:27 | 5'b00000 |
| SrcRType | 26:25 | variable |
| SrcR | 24:20 | variable |
| SrcL | 19:15 | variable |
| Constant | 14:12 | 3'b001 |
| RegDst | 11:7 | variable |
| Constant | 6:0 | 7'b1000101 |
{
"reg": [
{
"bits": 7,
"name": "7'b1000101"
},
{
"bits": 5,
"name": "RegDst"
},
{
"bits": 3,
"name": "3'b001"
},
{
"bits": 5,
"name": "SrcL"
},
{
"bits": 5,
"name": "SrcR"
},
{
"bits": 2,
"name": "SrcRType"
},
{
"bits": 5,
"name": "5'b00000"
}
],
"config": {
"bits": 32,
"fontsize": 13,
"hspace": 900,
"lanes": 1,
"offset": 0
}
}cmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd}
RegDstSrcLSrcRSrcRType下面是该指令所有者中的 Operation;页面没有重写这段行为。
readonly func InstructionContractOperation_CMP_NE() => ScalarOperationbegin return ScalarOperation_CMP_NE;end;readonly func InstructionContractHandler_CMP_NE() => ScalarSemanticHandlerbegin return ScalarHandler_ExecuteCompare;end;
pure func InstructionContractCondition_CMP_NE() => ScalarConditionbegin return ScalarCondition_NE;end;
pure func InstructionContractCompareResult_CMP_NE( left: Word, right: Word) => booleanbegin return ConditionHolds( InstructionContractCondition_CMP_NE(), left, right);end;// PTO-INSTRUCTION: {"assembly":["cmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd}"],"block":[],"catalog_indices":[67],"catalog_records":[{"asm":"cmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd}","constraints":[],"encoding":[{"index":0,"mask":"0xf800707f","match":"0x00001045","width_bits":32}],"encoding_kind":"L32","fields":[{"name":"RegDst","pieces":[{"instruction_lsb":7,"value_lsb":0,"width":5}],"signedness":"encoding-defined","width":5},{"name":"SrcL","pieces":[{"instruction_lsb":15,"value_lsb":0,"width":5}],"signedness":"encoding-defined","width":5},{"name":"SrcR","pieces":[{"instruction_lsb":20,"value_lsb":0,"width":5}],"signedness":"encoding-defined","width":5},{"name":"SrcRType","pieces":[{"instruction_lsb":25,"value_lsb":0,"width":2}],"signedness":"encoding-defined","width":2}],"form_id":"cmp_ne_32_fc47fbb1a0de","length_bits":32,"mnemonic":"CMP.NE","semantic_family":"BRU","semantic_group":"BRU","semantic_handler":"ExecuteCompare","semantic_summary":"CMP.NE - Compare scalar operands and write the encoded boolean result.","status":"accepted"}],"classification":["bru"],"contract":{"block_composition":["none"],"canonical_assembly":["cmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd}"],"defaults":["The selected assembly form determines which fields are present; every present field carries its encoded value and no encoded zero means omission."],"encoding_class":"standalone-encoded","examples":["cmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd}"],"exceptions":["Reserved field encodings raise Fault_IllegalInstruction before effects; handler-specific arithmetic, memory, control-flow, system-register, and privilege faults follow the embedded normative ASL operation."],"field_contracts":{},"field_zero_meanings":{"RegDst":"Encoded zero names the architectural zero GPR.","SrcL":"Encoded zero names the architectural zero GPR.","SrcR":"Encoded zero names the architectural zero GPR.","SrcRType":"Encoded zero selects value zero of the right-source modifier selector."},"legality":["Every value in each unconstrained encoded field is assigned; constrained complements are reserved and reject before effects."],"memory_effects":["none"],"operands":[{"field":"RegDst","role":"absolute GPR destination"},{"field":"SrcL","role":"left absolute GPR source"},{"field":"SrcR","role":"right absolute GPR source"},{"field":"SrcRType","role":"right-source modifier selector"}],"ordering":["none"],"standalone_opcode":true,"state_effects":["CMP.NE - Compare scalar operands and write the encoded boolean result.","After decode and legality checks, execute the normative ExecuteCompare ASL handler; no other architectural state is modified."]},"depends_on":["PTO-BLOCK-MODEL-SCHEMA-PROFILE-ENCODING"],"id":"PTO-SCALAR-CMP-NE","mnemonic":"CMP.NE","summary":"CMP.NE - Compare scalar operands and write the encoded boolean result.","surface":"scalar"}// PTO-REVIEW: {"review_method":"formal-definition-read","outcome":"FORMAL-COMPLETE","reviewed_fields":["assembly","encoding","defaults","operation","state","memory","ordering","faults","reserved"]}// DOC-BEGIN: decodereadonly func InstructionContractOperation_CMP_NE() => ScalarOperationbegin return ScalarOperation_CMP_NE;end;// DOC-END: decode// DOC-BEGIN: operationreadonly func InstructionContractHandler_CMP_NE() => ScalarSemanticHandlerbegin return ScalarHandler_ExecuteCompare;end;
pure func InstructionContractCondition_CMP_NE() => ScalarConditionbegin return ScalarCondition_NE;end;
pure func InstructionContractCompareResult_CMP_NE( left: Word, right: Word) => booleanbegin return ConditionHolds( InstructionContractCondition_CMP_NE(), left, right);end;// DOC-END: operation
CMP.NE 对解码后的标量操作数判断不相等,并发布规范化的 XLEN 一或零。
指令先对操作数取快照,准备解码右源,再判断不相等。
关系成立时结果为 XLEN 一,否则为 XLEN 零。
RegDst 选择编码指定的目的位置或丢弃行为。SrcL 提供左侧标量源。SrcR 提供右侧标量源。SrcRType 选择右源变换。规范化布尔值先通过编码目的位置发布,随后 TPC 前进 4 字节。
该指令不修改提交状态,也不访问内存或保留状态。
编码、保留字段值和源可用性都会在目的、控制或 TPC 效果前检查。
下面的示例只帮助理解当前所有者,不构成第二份语义定义。
cmp.ne SrcL, SrcR<{.sw, .uw}>, ->{t, u, Rd} 在条件为真时发布 XLEN 一,否则发布 XLEN 零。
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.
10 matching entries
PTO-AVS-BRU-CMP-NE-BOUND-001tests/asl/scalar/bru/CMP.NE/scalar-bound-cmp-ne-fields-001.asl52baef247ae2ab1695ec26945b1080bbb1b6001f0c894d496740532818de6fcaPTO-AVS-BRU-CMP-NE-EXEC-001tests/asl/scalar/bru/CMP.NE/scalar-exec-cmp-ne-direct-001.asl5f6254d510ef0e0f608e106c7426cef22756a7900530085f3a9f5971dbc8de86PTO-AVS-SCALAR-CMP-NE-DECODE-001tests/asl/scalar/bru/CMP.NE/scalar-decode-cmp-ne-canonical-001.asl27ca96ab2fc53f188218eada6be915169e34ffd20bf5e2e5f3cdc2ad55e2c034PTO-EVIDENCE-RELEASE-TRACEABILITYPTO-EVIDENCE-RELEASE-TRACEABILITYspec/evidence/release-traceability-readiness.jsonc7327021d39dc67ac5564bc55073b3870a397d79ac8d9648284d56e33bc14a3ePTO-EVIDENCE-INSTRUCTION-CONTRACT-CLOSUREPTO-EVIDENCE-INSTRUCTION-CONTRACT-CLOSUREspec/evidence/instruction-contract-closure.json3ef2bb62421c79dff8fa77a1c7983923b523244b8090812883ef81286ca8106aPTO-EVIDENCE-ARCHITECTURE-READINESSPTO-EVIDENCE-ARCHITECTURE-READINESSspec/evidence/architecture-readiness.json4b0b85199101251bea744e0f3591cc31906909dc80d5ab651c417a936036a004PTO-EVIDENCE-RELEASE-GATE-READINESSPTO-EVIDENCE-RELEASE-GATE-READINESSspec/evidence/release-gate-readiness.jsona0f4d2b6920c08981ea55fd8ef820708a40d4feb5402c5150e8e9ab532d84ce0PTO-EVIDENCE-RELEASE-MANIFESTPTO-EVIDENCE-RELEASE-MANIFESTspec/release-manifest.json1a64c109ed7a90351c41e2a418b3c0ebaf8ad975838986d2101385186b85c0d8Loading ADR-0027…
ADR-0027docs/status/decisions/0027-scalar-bru-totality-and-target-legality.md9289112d250e31f4222dcd27d20bda791be7a1b57764af7ed9b187e767b7acedLoading ADR-0059…
ADR-0059docs/status/decisions/0059-mnemonic-field-encoding-closure.mdf18d13f735cfaf9f2803c754c5818f4af33d1cc42c489f0d9ce060b07bb3a196{
"classification": [
"bru"
],
"documentation": "docs/scalar/bru/CMP.NE.md",
"id": "PTO-SCALAR-CMP-NE",
"instruction_contract": {
"artifact": "spec/evidence/instruction-contract-closure.json",
"mnemonic": "CMP.NE",
"ndf_clause": "PTO-INST-SCALAR-CMP-NE"
},
"mnemonic": "CMP.NE",
"readiness_subjects": [
"ADR-0027",
"ADR-0059"
],
"semantic_tests": [
"PTO-AVS-BRU-CMP-NE-BOUND-001",
"PTO-AVS-BRU-CMP-NE-EXEC-001"
],
"source": "asl/scalar/bru/CMP.NE.asl",
"surface": "scalar",
"tests": [
"PTO-AVS-BRU-CMP-NE-BOUND-001",
"PTO-AVS-BRU-CMP-NE-EXEC-001",
"PTO-AVS-SCALAR-CMP-NE-DECODE-001"
]
}0.58.5 · 候选发布7dc8b7e5b121d2b2499a2273bebff29e2cd868125b9d2edb6e55dac6f3728b425bdd57ef9ae877a8f66f6098d1aef3da930a2d51c18c8c3c8be6bed6e7f6d2cf6b221c5dc7a4a316cae8cc1bbc9028303c952429asl/scalar/bru/CMP.NE.aslasl/scalar/bru/CMP.NE.asl