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Diffstat (limited to 'tools/llvm-readobj/ARMAttributeParser.cpp')
| -rw-r--r-- | tools/llvm-readobj/ARMAttributeParser.cpp | 639 |
1 files changed, 639 insertions, 0 deletions
diff --git a/tools/llvm-readobj/ARMAttributeParser.cpp b/tools/llvm-readobj/ARMAttributeParser.cpp new file mode 100644 index 0000000..5857547 --- /dev/null +++ b/tools/llvm-readobj/ARMAttributeParser.cpp @@ -0,0 +1,639 @@ +//===--- ARMAttributeParser.cpp - ARM Attribute Information Printer -------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "ARMAttributeParser.h" +#include "StreamWriter.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/Support/LEB128.h" + +using namespace llvm; +using namespace llvm::ARMBuildAttrs; + + +static const EnumEntry<unsigned> TagNames[] = { + { "Tag_File", ARMBuildAttrs::File }, + { "Tag_Section", ARMBuildAttrs::Section }, + { "Tag_Symbol", ARMBuildAttrs::Symbol }, +}; + +template <typename type_, size_t size_> +size_t countof(const type_ (&)[size_]) { + return size_; +} + +namespace llvm { +#define ATTRIBUTE_HANDLER(Attr_) \ + { ARMBuildAttrs::Attr_, &ARMAttributeParser::Attr_ } + +const ARMAttributeParser::DisplayHandler +ARMAttributeParser::DisplayRoutines[] = { + { ARMBuildAttrs::CPU_raw_name, &ARMAttributeParser::StringAttribute, }, + { ARMBuildAttrs::CPU_name, &ARMAttributeParser::StringAttribute }, + ATTRIBUTE_HANDLER(CPU_arch), + ATTRIBUTE_HANDLER(CPU_arch_profile), + ATTRIBUTE_HANDLER(ARM_ISA_use), + ATTRIBUTE_HANDLER(THUMB_ISA_use), + ATTRIBUTE_HANDLER(FP_arch), + ATTRIBUTE_HANDLER(WMMX_arch), + ATTRIBUTE_HANDLER(Advanced_SIMD_arch), + ATTRIBUTE_HANDLER(PCS_config), + ATTRIBUTE_HANDLER(ABI_PCS_R9_use), + ATTRIBUTE_HANDLER(ABI_PCS_RW_data), + ATTRIBUTE_HANDLER(ABI_PCS_RO_data), + ATTRIBUTE_HANDLER(ABI_PCS_GOT_use), + ATTRIBUTE_HANDLER(ABI_PCS_wchar_t), + ATTRIBUTE_HANDLER(ABI_FP_rounding), + ATTRIBUTE_HANDLER(ABI_FP_denormal), + ATTRIBUTE_HANDLER(ABI_FP_exceptions), + ATTRIBUTE_HANDLER(ABI_FP_user_exceptions), + ATTRIBUTE_HANDLER(ABI_FP_number_model), + ATTRIBUTE_HANDLER(ABI_align_needed), + ATTRIBUTE_HANDLER(ABI_align_preserved), + ATTRIBUTE_HANDLER(ABI_enum_size), + ATTRIBUTE_HANDLER(ABI_HardFP_use), + ATTRIBUTE_HANDLER(ABI_VFP_args), + ATTRIBUTE_HANDLER(ABI_WMMX_args), + ATTRIBUTE_HANDLER(ABI_optimization_goals), + ATTRIBUTE_HANDLER(ABI_FP_optimization_goals), + ATTRIBUTE_HANDLER(compatibility), + ATTRIBUTE_HANDLER(CPU_unaligned_access), + ATTRIBUTE_HANDLER(FP_HP_extension), + ATTRIBUTE_HANDLER(ABI_FP_16bit_format), + ATTRIBUTE_HANDLER(MPextension_use), + ATTRIBUTE_HANDLER(DIV_use), + ATTRIBUTE_HANDLER(T2EE_use), + ATTRIBUTE_HANDLER(Virtualization_use), + ATTRIBUTE_HANDLER(nodefaults) +}; + +#undef ATTRIBUTE_HANDLER + +uint64_t ARMAttributeParser::ParseInteger(const uint8_t *Data, + uint32_t &Offset) { + unsigned Length; + uint64_t Value = decodeULEB128(Data + Offset, &Length); + Offset = Offset + Length; + return Value; +} + +StringRef ARMAttributeParser::ParseString(const uint8_t *Data, + uint32_t &Offset) { + const char *String = reinterpret_cast<const char*>(Data + Offset); + size_t Length = std::strlen(String); + Offset = Offset + Length + 1; + return StringRef(String, Length); +} + +void ARMAttributeParser::IntegerAttribute(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + SW.printNumber(ARMBuildAttrs::AttrTypeAsString(Tag), + ParseInteger(Data, Offset)); +} + +void ARMAttributeParser::StringAttribute(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + StringRef TagName = ARMBuildAttrs::AttrTypeAsString(Tag, /*TagPrefix*/false); + + DictScope AS(SW, "Attribute"); + SW.printNumber("Tag", Tag); + if (!TagName.empty()) + SW.printString("TagName", TagName); + SW.printString("Value", ParseString(Data, Offset)); +} + +void ARMAttributeParser::PrintAttribute(unsigned Tag, unsigned Value, + StringRef ValueDesc) { + StringRef TagName = ARMBuildAttrs::AttrTypeAsString(Tag, /*TagPrefix*/false); + + DictScope AS(SW, "Attribute"); + SW.printNumber("Tag", Tag); + SW.printNumber("Value", Value); + if (!TagName.empty()) + SW.printString("TagName", TagName); + if (!ValueDesc.empty()) + SW.printString("Description", ValueDesc); +} + +void ARMAttributeParser::CPU_arch(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Pre-v4", "ARM v4", "ARM v4T", "ARM v5T", "ARM v5TE", "ARM v5TEJ", "ARM v6", + "ARM v6KZ", "ARM v6T2", "ARM v6K", "ARM v7", "ARM v6-M", "ARM v6S-M", + "ARM v7E-M", "ARM v8" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::CPU_arch_profile(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + uint64_t Encoded = ParseInteger(Data, Offset); + + StringRef Profile; + switch (Encoded) { + default: Profile = "Unknown"; break; + case 'A': Profile = "Application"; break; + case 'R': Profile = "Real-time"; break; + case 'M': Profile = "Microcontroller"; break; + case 'S': Profile = "Classic"; break; + case '0': Profile = "None"; break; + } + + PrintAttribute(Tag, Encoded, Profile); +} + +void ARMAttributeParser::ARM_ISA_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "Permitted" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::THUMB_ISA_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "Thumb-1", "Thumb-2" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::FP_arch(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "VFPv1", "VFPv2", "VFPv3", "VFPv3-D16", "VFPv4", + "VFPv4-D16", "ARMv8-a FP", "ARMv8-a FP-D16" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::WMMX_arch(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "WMMXv1", "WMMXv2" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::Advanced_SIMD_arch(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "NEONv1", "NEONv2+FMA", "ARMv8-a NEON" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::PCS_config(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "None", "Bare Platform", "Linux Application", "Linux DSO", "Palm OS 2004", + "Reserved (Palm OS)", "Symbian OS 2004", "Reserved (Symbian OS)" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_PCS_R9_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "v6", "Static Base", "TLS", "Unused" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_PCS_RW_data(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Absolute", "PC-relative", "SB-relative", "Not Permitted" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_PCS_RO_data(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Absolute", "PC-relative", "Not Permitted" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_PCS_GOT_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "Direct", "GOT-Indirect" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_PCS_wchar_t(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "Unknown", "2-byte", "Unknown", "4-byte" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_rounding(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "IEEE-754", "Runtime" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_denormal(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Unsupported", "IEEE-754", "Sign Only" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_exceptions(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "IEEE-754" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_user_exceptions(AttrType Tag, + const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "IEEE-754" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_number_model(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "Finite Only", "RTABI", "IEEE-754" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_align_needed(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "8-byte alignment", "4-byte alignment", "Reserved" + }; + + uint64_t Value = ParseInteger(Data, Offset); + + std::string Description; + if (Value < countof(Strings)) + Description = std::string(Strings[Value]); + else if (Value <= 12) + Description = std::string("8-byte alignment, ") + utostr(1 << Value) + + std::string("-byte extended alignment"); + else + Description = "Invalid"; + + PrintAttribute(Tag, Value, Description); +} + +void ARMAttributeParser::ABI_align_preserved(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Required", "8-byte data alignment", "8-byte data and code alignment", + "Reserved" + }; + + uint64_t Value = ParseInteger(Data, Offset); + + std::string Description; + if (Value < countof(Strings)) + Description = std::string(Strings[Value]); + else if (Value <= 12) + Description = std::string("8-byte stack alignment, ") + utostr(1 << Value) + + std::string("-byte data alignment"); + else + Description = "Invalid"; + + PrintAttribute(Tag, Value, Description); +} + +void ARMAttributeParser::ABI_enum_size(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "Packed", "Int32", "External Int32" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_HardFP_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Tag_FP_arch", "Single-Precision", "Reserved", "Tag_FP_arch (deprecated)" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_VFP_args(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "AAPCS", "AAPCS VFP", "Custom", "Not Permitted" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_WMMX_args(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "AAPCS", "iWMMX", "Custom" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_optimization_goals(AttrType Tag, + const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Debugging", + "Best Debugging" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_optimization_goals(AttrType Tag, + const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Accuracy", + "Best Accuracy" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::compatibility(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + uint64_t Integer = ParseInteger(Data, Offset); + StringRef String = ParseString(Data, Offset); + + DictScope AS(SW, "Attribute"); + SW.printNumber("Tag", Tag); + SW.startLine() << "Value: " << Integer << ", " << String << '\n'; + SW.printString("TagName", AttrTypeAsString(Tag, /*TagPrefix*/false)); + switch (Integer) { + case 0: + SW.printString("Description", StringRef("No Specific Requirements")); + break; + case 1: + SW.printString("Description", StringRef("AEABI Conformant")); + break; + default: + SW.printString("Description", StringRef("AEABI Non-Conformant")); + break; + } +} + +void ARMAttributeParser::CPU_unaligned_access(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "v6-style" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::FP_HP_extension(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "If Available", "Permitted" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::ABI_FP_16bit_format(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "IEEE-754", "VFPv3" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::MPextension_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "Permitted" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::DIV_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "If Available", "Not Permitted", "Permitted" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::T2EE_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { "Not Permitted", "Permitted" }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::Virtualization_use(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + static const char *Strings[] = { + "Not Permitted", "TrustZone", "Virtualization Extensions", + "TrustZone + Virtualization Extensions" + }; + + uint64_t Value = ParseInteger(Data, Offset); + StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL; + PrintAttribute(Tag, Value, ValueDesc); +} + +void ARMAttributeParser::nodefaults(AttrType Tag, const uint8_t *Data, + uint32_t &Offset) { + uint64_t Value = ParseInteger(Data, Offset); + PrintAttribute(Tag, Value, "Unspecified Tags UNDEFINED"); +} + +void ARMAttributeParser::ParseIndexList(const uint8_t *Data, uint32_t &Offset, + SmallVectorImpl<uint8_t> &IndexList) { + for (;;) { + unsigned Length; + uint64_t Value = decodeULEB128(Data + Offset, &Length); + Offset = Offset + Length; + if (Value == 0) + break; + IndexList.push_back(Value); + } +} + +void ARMAttributeParser::ParseAttributeList(const uint8_t *Data, + uint32_t &Offset, uint32_t Length) { + while (Offset < Length) { + unsigned Length; + uint64_t Tag = decodeULEB128(Data + Offset, &Length); + Offset += Length; + + bool Handled = false; + for (unsigned AHI = 0, AHE = countof(DisplayRoutines); + AHI != AHE && !Handled; ++AHI) { + if (DisplayRoutines[AHI].Attribute == Tag) { + (this->*DisplayRoutines[AHI].Routine)(ARMBuildAttrs::AttrType(Tag), + Data, Offset); + Handled = true; + break; + } + } + if (!Handled) { + if (Tag < 32) { + errs() << "unhandled AEABI Tag " << Tag + << " (" << ARMBuildAttrs::AttrTypeAsString(Tag) << ")\n"; + continue; + } + + if (Tag % 2 == 0) + IntegerAttribute(ARMBuildAttrs::AttrType(Tag), Data, Offset); + else + StringAttribute(ARMBuildAttrs::AttrType(Tag), Data, Offset); + } + } +} + +void ARMAttributeParser::ParseSubsection(const uint8_t *Data, uint32_t Length) { + uint32_t Offset = sizeof(uint32_t); /* SectionLength */ + + SW.printNumber("SectionLength", Length); + + const char *VendorName = reinterpret_cast<const char*>(Data + Offset); + size_t VendorNameLength = std::strlen(VendorName); + SW.printString("Vendor", StringRef(VendorName, VendorNameLength)); + Offset = Offset + VendorNameLength + 1; + + if (StringRef(VendorName, VendorNameLength).lower() != "aeabi") + return; + + while (Offset < Length) { + /// Tag_File | Tag_Section | Tag_Symbol uleb128:byte-size + uint8_t Tag = Data[Offset]; + SW.printEnum("Tag", Tag, makeArrayRef(TagNames)); + Offset = Offset + sizeof(Tag); + + uint32_t Size = + *reinterpret_cast<const support::ulittle32_t*>(Data + Offset); + SW.printNumber("Size", Size); + Offset = Offset + sizeof(Size); + + if (Size > Length) { + errs() << "subsection length greater than section length\n"; + return; + } + + StringRef ScopeName, IndexName; + SmallVector<uint8_t, 8> Indicies; + switch (Tag) { + case ARMBuildAttrs::File: + ScopeName = "FileAttributes"; + break; + case ARMBuildAttrs::Section: + ScopeName = "SectionAttributes"; + IndexName = "Sections"; + ParseIndexList(Data, Offset, Indicies); + break; + case ARMBuildAttrs::Symbol: + ScopeName = "SymbolAttributes"; + IndexName = "Symbols"; + ParseIndexList(Data, Offset, Indicies); + break; + default: + errs() << "unrecognised tag: 0x" << utohexstr(Tag) << '\n'; + return; + } + + DictScope ASS(SW, ScopeName); + + if (!Indicies.empty()) + SW.printList(IndexName, Indicies); + + ParseAttributeList(Data, Offset, Length); + } +} + +void ARMAttributeParser::Parse(ArrayRef<uint8_t> Section) { + size_t Offset = 1; + unsigned SectionNumber = 0; + + while (Offset < Section.size()) { + uint32_t SectionLength = + *reinterpret_cast<const support::ulittle32_t*>(Section.data() + Offset); + + SW.startLine() << "Section " << ++SectionNumber << " {\n"; + SW.indent(); + + ParseSubsection(Section.data() + Offset, SectionLength); + Offset = Offset + SectionLength; + + SW.unindent(); + SW.startLine() << "}\n"; + } +} +} + |