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author | 2021-01-11 15:31:56 +0000 | |
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committer | 2021-01-11 15:31:56 +0000 | |
commit | 16ff81ed8b1ed9aa06fb1a731a2446b66cc49bef (patch) | |
tree | 1a7dd8152b94f6f8cd318bfaf85aa40882854583 /lib/libcxxabi/src/cxa_demangle.cpp | |
parent | sync (diff) | |
download | wireguard-openbsd-16ff81ed8b1ed9aa06fb1a731a2446b66cc49bef.tar.xz wireguard-openbsd-16ff81ed8b1ed9aa06fb1a731a2446b66cc49bef.zip |
Remove libc++ and libc++abi 8.0.0 now that we switched to version 10.0.1
in the gnu/ directory.
Diffstat (limited to 'lib/libcxxabi/src/cxa_demangle.cpp')
-rw-r--r-- | lib/libcxxabi/src/cxa_demangle.cpp | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/lib/libcxxabi/src/cxa_demangle.cpp b/lib/libcxxabi/src/cxa_demangle.cpp deleted file mode 100644 index f227addbdae..00000000000 --- a/lib/libcxxabi/src/cxa_demangle.cpp +++ /dev/null @@ -1,370 +0,0 @@ -//===-------------------------- cxa_demangle.cpp --------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -// FIXME: (possibly) incomplete list of features that clang mangles that this -// file does not yet support: -// - C++ modules TS - -#define _LIBCPP_NO_EXCEPTIONS - -#include "__cxxabi_config.h" - -#include "demangle/ItaniumDemangle.h" - -#include <cassert> -#include <cctype> -#include <cstdio> -#include <cstdlib> -#include <cstring> -#include <functional> -#include <numeric> -#include <utility> -#include <vector> - -using namespace itanium_demangle; - -constexpr const char *itanium_demangle::FloatData<float>::spec; -constexpr const char *itanium_demangle::FloatData<double>::spec; -constexpr const char *itanium_demangle::FloatData<long double>::spec; - -// <discriminator> := _ <non-negative number> # when number < 10 -// := __ <non-negative number> _ # when number >= 10 -// extension := decimal-digit+ # at the end of string -const char *itanium_demangle::parse_discriminator(const char *first, - const char *last) { - // parse but ignore discriminator - if (first != last) { - if (*first == '_') { - const char *t1 = first + 1; - if (t1 != last) { - if (std::isdigit(*t1)) - first = t1 + 1; - else if (*t1 == '_') { - for (++t1; t1 != last && std::isdigit(*t1); ++t1) - ; - if (t1 != last && *t1 == '_') - first = t1 + 1; - } - } - } else if (std::isdigit(*first)) { - const char *t1 = first + 1; - for (; t1 != last && std::isdigit(*t1); ++t1) - ; - if (t1 == last) - first = last; - } - } - return first; -} - -#ifndef NDEBUG -namespace { -struct DumpVisitor { - unsigned Depth = 0; - bool PendingNewline = false; - - template<typename NodeT> static constexpr bool wantsNewline(const NodeT *) { - return true; - } - static bool wantsNewline(NodeArray A) { return !A.empty(); } - static constexpr bool wantsNewline(...) { return false; } - - template<typename ...Ts> static bool anyWantNewline(Ts ...Vs) { - for (bool B : {wantsNewline(Vs)...}) - if (B) - return true; - return false; - } - - void printStr(const char *S) { fprintf(stderr, "%s", S); } - void print(StringView SV) { - fprintf(stderr, "\"%.*s\"", (int)SV.size(), SV.begin()); - } - void print(const Node *N) { - if (N) - N->visit(std::ref(*this)); - else - printStr("<null>"); - } - void print(NodeOrString NS) { - if (NS.isNode()) - print(NS.asNode()); - else if (NS.isString()) - print(NS.asString()); - else - printStr("NodeOrString()"); - } - void print(NodeArray A) { - ++Depth; - printStr("{"); - bool First = true; - for (const Node *N : A) { - if (First) - print(N); - else - printWithComma(N); - First = false; - } - printStr("}"); - --Depth; - } - - // Overload used when T is exactly 'bool', not merely convertible to 'bool'. - void print(bool B) { printStr(B ? "true" : "false"); } - - template <class T> - typename std::enable_if<std::is_unsigned<T>::value>::type print(T N) { - fprintf(stderr, "%llu", (unsigned long long)N); - } - - template <class T> - typename std::enable_if<std::is_signed<T>::value>::type print(T N) { - fprintf(stderr, "%lld", (long long)N); - } - - void print(ReferenceKind RK) { - switch (RK) { - case ReferenceKind::LValue: - return printStr("ReferenceKind::LValue"); - case ReferenceKind::RValue: - return printStr("ReferenceKind::RValue"); - } - } - void print(FunctionRefQual RQ) { - switch (RQ) { - case FunctionRefQual::FrefQualNone: - return printStr("FunctionRefQual::FrefQualNone"); - case FunctionRefQual::FrefQualLValue: - return printStr("FunctionRefQual::FrefQualLValue"); - case FunctionRefQual::FrefQualRValue: - return printStr("FunctionRefQual::FrefQualRValue"); - } - } - void print(Qualifiers Qs) { - if (!Qs) return printStr("QualNone"); - struct QualName { Qualifiers Q; const char *Name; } Names[] = { - {QualConst, "QualConst"}, - {QualVolatile, "QualVolatile"}, - {QualRestrict, "QualRestrict"}, - }; - for (QualName Name : Names) { - if (Qs & Name.Q) { - printStr(Name.Name); - Qs = Qualifiers(Qs & ~Name.Q); - if (Qs) printStr(" | "); - } - } - } - void print(SpecialSubKind SSK) { - switch (SSK) { - case SpecialSubKind::allocator: - return printStr("SpecialSubKind::allocator"); - case SpecialSubKind::basic_string: - return printStr("SpecialSubKind::basic_string"); - case SpecialSubKind::string: - return printStr("SpecialSubKind::string"); - case SpecialSubKind::istream: - return printStr("SpecialSubKind::istream"); - case SpecialSubKind::ostream: - return printStr("SpecialSubKind::ostream"); - case SpecialSubKind::iostream: - return printStr("SpecialSubKind::iostream"); - } - } - - void newLine() { - printStr("\n"); - for (unsigned I = 0; I != Depth; ++I) - printStr(" "); - PendingNewline = false; - } - - template<typename T> void printWithPendingNewline(T V) { - print(V); - if (wantsNewline(V)) - PendingNewline = true; - } - - template<typename T> void printWithComma(T V) { - if (PendingNewline || wantsNewline(V)) { - printStr(","); - newLine(); - } else { - printStr(", "); - } - - printWithPendingNewline(V); - } - - struct CtorArgPrinter { - DumpVisitor &Visitor; - - template<typename T, typename ...Rest> void operator()(T V, Rest ...Vs) { - if (Visitor.anyWantNewline(V, Vs...)) - Visitor.newLine(); - Visitor.printWithPendingNewline(V); - int PrintInOrder[] = { (Visitor.printWithComma(Vs), 0)..., 0 }; - (void)PrintInOrder; - } - }; - - template<typename NodeT> void operator()(const NodeT *Node) { - Depth += 2; - fprintf(stderr, "%s(", itanium_demangle::NodeKind<NodeT>::name()); - Node->match(CtorArgPrinter{*this}); - fprintf(stderr, ")"); - Depth -= 2; - } - - void operator()(const ForwardTemplateReference *Node) { - Depth += 2; - fprintf(stderr, "ForwardTemplateReference("); - if (Node->Ref && !Node->Printing) { - Node->Printing = true; - CtorArgPrinter{*this}(Node->Ref); - Node->Printing = false; - } else { - CtorArgPrinter{*this}(Node->Index); - } - fprintf(stderr, ")"); - Depth -= 2; - } -}; -} - -void itanium_demangle::Node::dump() const { - DumpVisitor V; - visit(std::ref(V)); - V.newLine(); -} -#endif - -namespace { -class BumpPointerAllocator { - struct BlockMeta { - BlockMeta* Next; - size_t Current; - }; - - static constexpr size_t AllocSize = 4096; - static constexpr size_t UsableAllocSize = AllocSize - sizeof(BlockMeta); - - alignas(long double) char InitialBuffer[AllocSize]; - BlockMeta* BlockList = nullptr; - - void grow() { - char* NewMeta = static_cast<char *>(std::malloc(AllocSize)); - if (NewMeta == nullptr) - std::terminate(); - BlockList = new (NewMeta) BlockMeta{BlockList, 0}; - } - - void* allocateMassive(size_t NBytes) { - NBytes += sizeof(BlockMeta); - BlockMeta* NewMeta = reinterpret_cast<BlockMeta*>(std::malloc(NBytes)); - if (NewMeta == nullptr) - std::terminate(); - BlockList->Next = new (NewMeta) BlockMeta{BlockList->Next, 0}; - return static_cast<void*>(NewMeta + 1); - } - -public: - BumpPointerAllocator() - : BlockList(new (InitialBuffer) BlockMeta{nullptr, 0}) {} - - void* allocate(size_t N) { - N = (N + 15u) & ~15u; - if (N + BlockList->Current >= UsableAllocSize) { - if (N > UsableAllocSize) - return allocateMassive(N); - grow(); - } - BlockList->Current += N; - return static_cast<void*>(reinterpret_cast<char*>(BlockList + 1) + - BlockList->Current - N); - } - - void reset() { - while (BlockList) { - BlockMeta* Tmp = BlockList; - BlockList = BlockList->Next; - if (reinterpret_cast<char*>(Tmp) != InitialBuffer) - std::free(Tmp); - } - BlockList = new (InitialBuffer) BlockMeta{nullptr, 0}; - } - - ~BumpPointerAllocator() { reset(); } -}; - -class DefaultAllocator { - BumpPointerAllocator Alloc; - -public: - void reset() { Alloc.reset(); } - - template<typename T, typename ...Args> T *makeNode(Args &&...args) { - return new (Alloc.allocate(sizeof(T))) - T(std::forward<Args>(args)...); - } - - void *allocateNodeArray(size_t sz) { - return Alloc.allocate(sizeof(Node *) * sz); - } -}; -} // unnamed namespace - -//===----------------------------------------------------------------------===// -// Code beyond this point should not be synchronized with LLVM. -//===----------------------------------------------------------------------===// - -using Demangler = itanium_demangle::ManglingParser<DefaultAllocator>; - -namespace { -enum : int { - demangle_invalid_args = -3, - demangle_invalid_mangled_name = -2, - demangle_memory_alloc_failure = -1, - demangle_success = 0, -}; -} - -namespace __cxxabiv1 { -extern "C" _LIBCXXABI_FUNC_VIS char * -__cxa_demangle(const char *MangledName, char *Buf, size_t *N, int *Status) { - if (MangledName == nullptr || (Buf != nullptr && N == nullptr)) { - if (Status) - *Status = demangle_invalid_args; - return nullptr; - } - - int InternalStatus = demangle_success; - Demangler Parser(MangledName, MangledName + std::strlen(MangledName)); - OutputStream S; - - Node *AST = Parser.parse(); - - if (AST == nullptr) - InternalStatus = demangle_invalid_mangled_name; - else if (!initializeOutputStream(Buf, N, S, 1024)) - InternalStatus = demangle_memory_alloc_failure; - else { - assert(Parser.ForwardTemplateRefs.empty()); - AST->print(S); - S += '\0'; - if (N != nullptr) - *N = S.getCurrentPosition(); - Buf = S.getBuffer(); - } - - if (Status) - *Status = InternalStatus; - return InternalStatus == demangle_success ? Buf : nullptr; -} -} // __cxxabiv1 |