vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
342 lines
12 KiB
C++
342 lines
12 KiB
C++
//===--- InterfaceStubFunctionsConsumer.cpp -------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/Mangle.h"
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#include "clang/AST/RecursiveASTVisitor.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Sema/TemplateInstCallback.h"
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#include "llvm/BinaryFormat/ELF.h"
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using namespace clang;
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namespace {
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class InterfaceStubFunctionsConsumer : public ASTConsumer {
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CompilerInstance &Instance;
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StringRef InFile;
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StringRef Format;
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std::set<std::string> ParsedTemplates;
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enum RootDeclOrigin { TopLevel = 0, FromTU = 1, IsLate = 2 };
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struct MangledSymbol {
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std::string ParentName;
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uint8_t Type;
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uint8_t Binding;
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std::vector<std::string> Names;
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MangledSymbol() = delete;
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MangledSymbol(const std::string &ParentName, uint8_t Type, uint8_t Binding,
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std::vector<std::string> Names)
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: ParentName(ParentName), Type(Type), Binding(Binding),
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Names(std::move(Names)) {}
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};
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using MangledSymbols = std::map<const NamedDecl *, MangledSymbol>;
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bool WriteNamedDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
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// Here we filter out anything that's not set to DefaultVisibility.
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// DefaultVisibility is set on a decl when -fvisibility is not specified on
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// the command line (or specified as default) and the decl does not have
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// __attribute__((visibility("hidden"))) set or when the command line
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// argument is set to hidden but the decl explicitly has
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// __attribute__((visibility ("default"))) set. We do this so that the user
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// can have fine grain control of what they want to expose in the stub.
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auto isVisible = [](const NamedDecl *ND) -> bool {
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return ND->getVisibility() == DefaultVisibility;
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};
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auto ignoreDecl = [this, isVisible](const NamedDecl *ND) -> bool {
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if (!isVisible(ND))
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return true;
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if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
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if (const auto *Parent = VD->getParentFunctionOrMethod())
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if (isa<BlockDecl>(Parent) || isa<CXXMethodDecl>(Parent))
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return true;
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if ((VD->getStorageClass() == StorageClass::SC_Extern) ||
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(VD->getStorageClass() == StorageClass::SC_Static &&
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VD->getParentFunctionOrMethod() == nullptr))
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return true;
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}
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if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
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if (FD->isInlined() && !isa<CXXMethodDecl>(FD) &&
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!Instance.getLangOpts().GNUInline)
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return true;
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if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
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if (const auto *RC = dyn_cast<CXXRecordDecl>(MD->getParent()))
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if (isa<ClassTemplateDecl>(RC->getParent()) || !isVisible(RC))
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return true;
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if (MD->isDependentContext() || !MD->hasBody())
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return true;
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}
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if (FD->getStorageClass() == StorageClass::SC_Static)
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return true;
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}
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return false;
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};
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auto getParentFunctionDecl = [](const NamedDecl *ND) -> const NamedDecl * {
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if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
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if (const auto *FD =
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dyn_cast_or_null<FunctionDecl>(VD->getParentFunctionOrMethod()))
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return FD;
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return nullptr;
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};
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auto getMangledNames = [](const NamedDecl *ND) -> std::vector<std::string> {
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if (!ND)
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return {""};
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ASTNameGenerator NameGen(ND->getASTContext());
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std::vector<std::string> MangledNames = NameGen.getAllManglings(ND);
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if (isa<CXXConstructorDecl>(ND) || isa<CXXDestructorDecl>(ND))
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return MangledNames;
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#ifdef EXPENSIVE_CHECKS
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assert(MangledNames.size() <= 1 && "Expected only one name mangling.");
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#endif
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return {NameGen.getName(ND)};
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};
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if (!(RDO & FromTU))
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return true;
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if (Symbols.find(ND) != Symbols.end())
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return true;
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// - Currently have not figured out how to produce the names for FieldDecls.
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// - Do not want to produce symbols for function paremeters.
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if (isa<FieldDecl>(ND) || isa<ParmVarDecl>(ND))
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return true;
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const NamedDecl *ParentDecl = getParentFunctionDecl(ND);
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if ((ParentDecl && ignoreDecl(ParentDecl)) || ignoreDecl(ND))
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return true;
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if (RDO & IsLate) {
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Instance.getDiagnostics().Report(diag::err_asm_invalid_type_in_input)
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<< "Generating Interface Stubs is not supported with "
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"delayed template parsing.";
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} else {
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if (const auto *FD = dyn_cast<FunctionDecl>(ND))
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if (FD->isDependentContext())
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return true;
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const bool IsWeak = (ND->hasAttr<WeakAttr>() ||
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ND->hasAttr<WeakRefAttr>() || ND->isWeakImported());
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Symbols.insert(std::make_pair(
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ND,
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MangledSymbol(getMangledNames(ParentDecl).front(),
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// Type:
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isa<VarDecl>(ND) ? llvm::ELF::STT_OBJECT
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: llvm::ELF::STT_FUNC,
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// Binding:
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IsWeak ? llvm::ELF::STB_WEAK : llvm::ELF::STB_GLOBAL,
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getMangledNames(ND))));
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}
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return true;
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}
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void
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HandleDecls(const llvm::iterator_range<DeclContext::decl_iterator> &Decls,
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MangledSymbols &Symbols, int RDO) {
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for (const auto *D : Decls)
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HandleNamedDecl(dyn_cast<NamedDecl>(D), Symbols, RDO);
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}
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void HandleTemplateSpecializations(const FunctionTemplateDecl &FTD,
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MangledSymbols &Symbols, int RDO) {
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for (const auto *D : FTD.specializations())
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HandleNamedDecl(dyn_cast<NamedDecl>(D), Symbols, RDO);
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}
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void HandleTemplateSpecializations(const ClassTemplateDecl &CTD,
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MangledSymbols &Symbols, int RDO) {
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for (const auto *D : CTD.specializations())
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HandleNamedDecl(dyn_cast<NamedDecl>(D), Symbols, RDO);
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}
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bool HandleNamedDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
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if (!ND)
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return false;
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switch (ND->getKind()) {
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default:
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break;
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case Decl::Kind::Namespace:
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HandleDecls(cast<NamespaceDecl>(ND)->decls(), Symbols, RDO);
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return true;
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case Decl::Kind::CXXRecord:
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HandleDecls(cast<CXXRecordDecl>(ND)->decls(), Symbols, RDO);
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return true;
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case Decl::Kind::ClassTemplateSpecialization:
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HandleDecls(cast<ClassTemplateSpecializationDecl>(ND)->decls(), Symbols,
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RDO);
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return true;
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case Decl::Kind::ClassTemplate:
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HandleTemplateSpecializations(*cast<ClassTemplateDecl>(ND), Symbols, RDO);
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return true;
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case Decl::Kind::FunctionTemplate:
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HandleTemplateSpecializations(*cast<FunctionTemplateDecl>(ND), Symbols,
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RDO);
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return true;
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case Decl::Kind::Record:
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case Decl::Kind::Typedef:
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case Decl::Kind::Enum:
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case Decl::Kind::EnumConstant:
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case Decl::Kind::TemplateTypeParm:
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case Decl::Kind::NonTypeTemplateParm:
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case Decl::Kind::CXXConversion:
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case Decl::Kind::UnresolvedUsingValue:
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case Decl::Kind::Using:
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case Decl::Kind::UsingShadow:
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case Decl::Kind::TypeAliasTemplate:
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case Decl::Kind::TypeAlias:
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case Decl::Kind::VarTemplate:
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case Decl::Kind::VarTemplateSpecialization:
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case Decl::Kind::UsingDirective:
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case Decl::Kind::TemplateTemplateParm:
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case Decl::Kind::ClassTemplatePartialSpecialization:
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case Decl::Kind::IndirectField:
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case Decl::Kind::ConstructorUsingShadow:
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case Decl::Kind::CXXDeductionGuide:
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case Decl::Kind::NamespaceAlias:
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case Decl::Kind::UnresolvedUsingTypename:
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return true;
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case Decl::Kind::Var: {
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// Bail on any VarDecl that either has no named symbol.
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if (!ND->getIdentifier())
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return true;
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const auto *VD = cast<VarDecl>(ND);
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// Bail on any VarDecl that is a dependent or templated type.
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if (VD->isTemplated() || VD->getType()->isDependentType())
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return true;
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if (WriteNamedDecl(ND, Symbols, RDO))
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return true;
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break;
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}
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case Decl::Kind::ParmVar:
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case Decl::Kind::CXXMethod:
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case Decl::Kind::CXXConstructor:
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case Decl::Kind::CXXDestructor:
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case Decl::Kind::Function:
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case Decl::Kind::Field:
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if (WriteNamedDecl(ND, Symbols, RDO))
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return true;
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}
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// While interface stubs are in the development stage, it's probably best to
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// catch anything that's not a VarDecl or Template/FunctionDecl.
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Instance.getDiagnostics().Report(diag::err_asm_invalid_type_in_input)
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<< "Expected a function or function template decl.";
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return false;
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}
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public:
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InterfaceStubFunctionsConsumer(CompilerInstance &Instance, StringRef InFile,
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StringRef Format)
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: Instance(Instance), InFile(InFile), Format(Format) {}
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void HandleTranslationUnit(ASTContext &context) override {
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struct Visitor : public RecursiveASTVisitor<Visitor> {
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bool VisitNamedDecl(NamedDecl *ND) {
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if (const auto *FD = dyn_cast<FunctionDecl>(ND))
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if (FD->isLateTemplateParsed()) {
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LateParsedDecls.insert(FD);
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return true;
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}
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if (const auto *VD = dyn_cast<ValueDecl>(ND)) {
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ValueDecls.insert(VD);
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return true;
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}
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NamedDecls.insert(ND);
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return true;
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}
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std::set<const NamedDecl *> LateParsedDecls;
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std::set<NamedDecl *> NamedDecls;
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std::set<const ValueDecl *> ValueDecls;
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} v;
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v.TraverseDecl(context.getTranslationUnitDecl());
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MangledSymbols Symbols;
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auto OS = Instance.createDefaultOutputFile(/*Binary=*/false, InFile, "ifs");
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if (!OS)
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return;
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if (Instance.getLangOpts().DelayedTemplateParsing) {
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clang::Sema &S = Instance.getSema();
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for (const auto *FD : v.LateParsedDecls) {
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clang::LateParsedTemplate &LPT =
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*S.LateParsedTemplateMap.find(cast<FunctionDecl>(FD))->second;
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S.LateTemplateParser(S.OpaqueParser, LPT);
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HandleNamedDecl(FD, Symbols, (FromTU | IsLate));
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}
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}
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for (const NamedDecl *ND : v.ValueDecls)
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HandleNamedDecl(ND, Symbols, FromTU);
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for (const NamedDecl *ND : v.NamedDecls)
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HandleNamedDecl(ND, Symbols, FromTU);
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auto writeIfsV1 = [this](const llvm::Triple &T,
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const MangledSymbols &Symbols,
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const ASTContext &context, StringRef Format,
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raw_ostream &OS) -> void {
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OS << "--- !" << Format << "\n";
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OS << "IfsVersion: 3.0\n";
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OS << "Target: " << T.str() << "\n";
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OS << "Symbols:\n";
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for (const auto &E : Symbols) {
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const MangledSymbol &Symbol = E.second;
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for (const auto &Name : Symbol.Names) {
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OS << " - { Name: \""
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<< (Symbol.ParentName.empty() || Instance.getLangOpts().CPlusPlus
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? ""
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: (Symbol.ParentName + "."))
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<< Name << "\", Type: ";
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switch (Symbol.Type) {
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default:
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llvm_unreachable(
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"clang -emit-interface-stubs: Unexpected symbol type.");
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case llvm::ELF::STT_NOTYPE:
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OS << "NoType";
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break;
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case llvm::ELF::STT_OBJECT: {
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auto VD = cast<ValueDecl>(E.first)->getType();
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OS << "Object, Size: "
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<< context.getTypeSizeInChars(VD).getQuantity();
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break;
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}
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case llvm::ELF::STT_FUNC:
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OS << "Func";
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break;
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}
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if (Symbol.Binding == llvm::ELF::STB_WEAK)
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OS << ", Weak: true";
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OS << " }\n";
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}
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}
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OS << "...\n";
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OS.flush();
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};
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assert(Format == "ifs-v1" && "Unexpected IFS Format.");
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writeIfsV1(Instance.getTarget().getTriple(), Symbols, context, Format, *OS);
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}
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};
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} // namespace
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std::unique_ptr<ASTConsumer>
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GenerateInterfaceStubsAction::CreateASTConsumer(CompilerInstance &CI,
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StringRef InFile) {
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return std::make_unique<InterfaceStubFunctionsConsumer>(CI, InFile, "ifs-v1");
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}
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