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opened 2026-10-31 01:14:28 +00:00 by bsakaguchi
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📋 Pull Request Information
Original PR: https://github.com/morluto/rea/pull/4843
Author: @Zhouyang66639
Created: 10/17/2026
Status: 🔄 Open
Base:
main← Head:admit-sparcv9-elf📝 Commits (2)
af4df27fix(domain): admit SPARC V9 (EM_SPARCV9, 43) ELF binaries629291afix(domain): scope SPARC to BE64 and keep adapter policy out of domain📊 Changes
13 files changed (+251 additions, -30 deletions)
View changed files
➕
src/domain/binaryTarget.sparc.test.ts(+31 -0)📝
src/domain/binaryTarget.test.ts(+1 -0)📝
src/domain/binaryTarget.ts(+14 -0)➕
src/domain/binaryTargetTypes.test.ts(+32 -0)📝
src/domain/binaryTargetTypes.ts(+26 -1)📝
src/domain/elfFixedHeader.ts(+7 -1)📝
src/ghidra/GhidraProvider.behavior.test.ts(+34 -0)📝
src/ghidra/GhidraProvider.ts(+1 -0)📝
src/hopper/HopperAnalysisProfile.ts(+28 -12)📝
src/hopper/HopperProvider.test.ts(+43 -0)📝
src/hopper/HopperProvider.ts(+3 -8)📝
src/ida/IdaProvider.test.ts(+19 -0)📝
src/ida/IdaProvider.ts(+12 -8)📄 Description
Summary
Adds the missing
elfArchitecture()case fore_machine = 43(EM_SPARCV9) soopen_binaryadmits 64-bit SPARC ELF objects through the existing header-driven Ghidra lane instead of refusing them at admission. Fixes #4842.Problem and expected behavior
Smallest trigger: an ELF64 big-endian object with
e_machine = 43. Violated invariant:src/domain/elfFixedHeader.tsclassifies only eight ELF machine values (3, 8, 20, 40, 62, 164, 183, 243), soparseElfreturnserr("unsupported ELF architecture")and the target never reaches a provider — even though the Ghidra version REA pins already ships the processor. At tagGhidra_12.1.4_build,Ghidra/Processors/Sparc/data/languages/Sparc.opinionbinds ELFprimary43 toprocessor="Sparc" endian="big" size="64", andSparcV9.ldefsoffers exactly two ids (sparc:BE:32:default,sparc:BE:64:default), so 43 resolves to one language with no caller choice.Expected behavior after this change: REA records the
sparcfamily, the generic Ghidra lane imports it withlanguage_id: "auto-from-header", and Hopper and IDA decline it naming the family — the same observable contract #4819 established forhexagon.Change and scope
Commit
af4df27admits the family; commit629291aanswers the first review round (see the reply threads).src/domain/elfFixedHeader.ts:elfArchitecture()now takes the parsedelfClassand byte order, and admitsEM_SPARCV9(43) only under ELF64 big-endian commitments. Those are exactly the header facts Ghidra binds to one language (Sparc.opinionat tagGhidra_12.1.4_build: 43 ->endian="big" size="64", andSparcV9.ldefsoffers onlysparc:BE:32:default/sparc:BE:64:default), so a 32-bit-class or little-endian header with machine 43 stays unclassified instead of reaching an import that has no matching language.src/domain/binaryTargetTypes.ts:sparcjoinsBINARY_ARCHITECTURES, plus a provider-neutral partitionELF_ONLY_ARCHITECTURES = ["hexagon", "sparc"]withisElfOnlyArchitecture— families no PE COFF machine or Mach-O CPU type can declare (src/domain/peMachine.tsmaps only 0x014c, 0x8664, 0x01c0/0x01c2/0x01c4, 0xaa64).HeaderArchitectureis derived from the metadata, raw-only, and ELF-only partitions, andBinaryTargetgains aformat: "elf"-onlysparcmember, sosparccannot appear as a PE or raw-binary family.src/domain/binaryTarget.ts:ExecutableMetadatagains thesparcmember;parseElfadmits it without an ELF metadata member, alongsidehexagon.src/ghidra/GhidraProvider.ts:sparcjoinsSUPPORTED_ARCHITECTURES; the profile staysloader/language_id=auto-from-header.src/hopper/andsrc/ida/: each adapter keeps its own family label table and declines the metadata families and the ELF-only families. Hopper's advice is now conditional on which thing actually exists: a metadata family is pointed at its verified pinned Ghidra profile, an ELF-only family at Ghidra's header-driven import.src/domain/binaryTarget.sparc.test.ts(accept plus three rejects), the Ghidra admit/Windows-decline behavior block, Hopper and IDA decline wording for both advice arms, and the ELF-only partition table.Intentionally not included:
EM_SPARC(2) andEM_SPARC32PLUS(18), now asserted rather than only stated: machine 2 covers pre-V9 V8 objects and 18 covers V9 in 32-bit mode, so the family name plus class does not establish the ISA. That needs the ELF-metadata plus pinned-profile route (mips,riscv,powerpc) with its own verified lane.GhidraSparcProfile, noverify:ghidra:sparclane, no SPARC conformance fixture. This machine has no SPARC cross target (Apple clang 17 ships none, and there is nolldorllvm-readelf) and no SPARC object, so a lane claiming verified decompiler results could not be run and is not claimed.Contract and boundary impact
src/domain/elfFixedHeader.tsfor machine-to-family,src/domain/binaryTargetTypes.tsfor the partition; earliest stage isopen_binaryadmission.sparcjoins the advertisedarchitectureenum, becausesrc/contracts/toolOutputSchemaGroups.tsandsrc/domain/evidence.tsboth build it fromBINARY_ARCHITECTURES. Tool output schemas and the Evidence schema therefore gain one enum value. Catalog digests are recorded from the compiled contracts duringnpm run compileand are not committed, so no generated file changes here.sparcELF target is still declined onwin32withtarget_format_unsupported. Hopper and IDA decline by name.Expected effects.
Evidence and regression coverage
src/domain/binaryTarget.sparc.test.ts— new; admitself(2, 2, 43)and declineself(1, 2, 43),elf(2, 1, 43), plus machine values 2 and 18.src/domain/binaryTargetTypes.test.ts— new; pins the ELF-only partition tohexagonandsparcand lists every family outside it.src/domain/binaryTarget.test.ts— classification row forelf(2, 2, 43).src/ghidra/GhidraProvider.behavior.test.ts— its owndescribe: SPARC target supported, profile parameters stayauto-from-header, declined onwin32. Separate block becausedescribe("Ghidra provider")already occupies 149 of the 150 linesmax-lines-per-functionallows.src/hopper/HopperProvider.test.ts— SPARC and Hexagon declines assertheader-drivenand assert the reason does not sayverified; MIPS still assertsverified Ghidra MIPS profile.src/ida/IdaProvider.test.ts— SPARC decline names the family.npm run test:focusedon the affected files into failures (10 failed / 165 passed for the first commit's set). Two targeted mutations on the final tree: replacing the BE64 guard with an unconditional"sparc"fails 2 of the 4 SPARC header tests; collapsing Hopper's two advice arms into one fails 2 Hopper tests.open_binaryreturnsunsupported ELF architecture; the post-change import result is source-derived from Ghidra'sSparc.opinion, not observed.rea doctorrun, no Hopper or IDA run, no SPARC fixture, and no 32-bit SPARC admission.For evidence-bearing changes: the agent left these unchecked because they are claims about human review of the evidence, not facts it can assert.
Validation performed
All results below are from the tree at head
629291a(main7016951plus these two commits), run locally on macOS arm64 with Node 26.11.1.npm run test:fast(source group) — 608 test files, 9680 passed, 13 skipped, 0 failed.npm run test:focused --the eight domain, Ghidra, Hopper and IDA files above — 9 files, 196 passed.npm run typecheck— clean.npm run verify:architecture-guards— passed across 1494 source files.npx oxfmt --check src/domain src/hopper src/ida— all correctly formatted.npx oxlinton the changed files — 42 warnings, 0 errors, and no finding at a line this PR added.npm run check:ci— stops atformat:checkon exactly one file,docs/readme/README_fr.md, which is not in this diff; that failure is onmainindependently of this change.verify:ghidra*real-provider lanes, any SPARC cross-toolchain, and a SPARC target binary.Compatibility, safety, and release
Author readiness
Human owner: @Zhouyang66639
The change was prepared by an AI agent on behalf of @Zhouyang66639. The human owner reviewed this description and the changed-file list in this session and instructed the agent to fill these declarations and mark the PR ready for review; every evidence line below is a command the agent actually ran, and the recorded gaps stay as written.
Before merge
type(scope): outcome.Fixes #4842
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.