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tools: add support for decoding ARM attributes
Enhance the ARM specific parsing support in llvm-readobj to support attributes. This allows for simpler tests to validate encoding of the build attributes as specified in the ARM ELF specification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200450 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
639
tools/llvm-readobj/ARMAttributeParser.cpp
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639
tools/llvm-readobj/ARMAttributeParser.cpp
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@ -0,0 +1,639 @@
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//===--- ARMAttributeParser.cpp - ARM Attribute Information Printer -------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "ARMAttributeParser.h"
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#include "StreamWriter.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/LEB128.h"
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using namespace llvm;
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using namespace llvm::ARMBuildAttrs;
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static const EnumEntry<unsigned> TagNames[] = {
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{ "Tag_File", ARMBuildAttrs::File },
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{ "Tag_Section", ARMBuildAttrs::Section },
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{ "Tag_Symbol", ARMBuildAttrs::Symbol },
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};
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template <typename type_, size_t size_>
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size_t countof(const type_ (&)[size_]) {
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return size_;
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}
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namespace llvm {
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#define ATTRIBUTE_HANDLER(Attr_) \
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{ ARMBuildAttrs::Attr_, &ARMAttributeParser::Attr_ }
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const ARMAttributeParser::DisplayHandler
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ARMAttributeParser::DisplayRoutines[] = {
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{ ARMBuildAttrs::CPU_raw_name, &ARMAttributeParser::StringAttribute, },
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{ ARMBuildAttrs::CPU_name, &ARMAttributeParser::StringAttribute },
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ATTRIBUTE_HANDLER(CPU_arch),
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ATTRIBUTE_HANDLER(CPU_arch_profile),
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ATTRIBUTE_HANDLER(ARM_ISA_use),
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ATTRIBUTE_HANDLER(THUMB_ISA_use),
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ATTRIBUTE_HANDLER(FP_arch),
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ATTRIBUTE_HANDLER(WMMX_arch),
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ATTRIBUTE_HANDLER(Advanced_SIMD_arch),
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ATTRIBUTE_HANDLER(PCS_config),
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ATTRIBUTE_HANDLER(ABI_PCS_R9_use),
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ATTRIBUTE_HANDLER(ABI_PCS_RW_data),
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ATTRIBUTE_HANDLER(ABI_PCS_RO_data),
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ATTRIBUTE_HANDLER(ABI_PCS_GOT_use),
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ATTRIBUTE_HANDLER(ABI_PCS_wchar_t),
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ATTRIBUTE_HANDLER(ABI_FP_rounding),
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ATTRIBUTE_HANDLER(ABI_FP_denormal),
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ATTRIBUTE_HANDLER(ABI_FP_exceptions),
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ATTRIBUTE_HANDLER(ABI_FP_user_exceptions),
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ATTRIBUTE_HANDLER(ABI_FP_number_model),
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ATTRIBUTE_HANDLER(ABI_align_needed),
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ATTRIBUTE_HANDLER(ABI_align_preserved),
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ATTRIBUTE_HANDLER(ABI_enum_size),
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ATTRIBUTE_HANDLER(ABI_HardFP_use),
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ATTRIBUTE_HANDLER(ABI_VFP_args),
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ATTRIBUTE_HANDLER(ABI_WMMX_args),
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ATTRIBUTE_HANDLER(ABI_optimization_goals),
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ATTRIBUTE_HANDLER(ABI_FP_optimization_goals),
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ATTRIBUTE_HANDLER(compatibility),
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ATTRIBUTE_HANDLER(CPU_unaligned_access),
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ATTRIBUTE_HANDLER(FP_HP_extension),
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ATTRIBUTE_HANDLER(ABI_FP_16bit_format),
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ATTRIBUTE_HANDLER(MPextension_use),
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ATTRIBUTE_HANDLER(DIV_use),
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ATTRIBUTE_HANDLER(T2EE_use),
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ATTRIBUTE_HANDLER(Virtualization_use),
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ATTRIBUTE_HANDLER(nodefaults)
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};
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#undef ATTRIBUTE_HANDLER
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uint64_t ARMAttributeParser::ParseInteger(const uint8_t *Data,
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uint32_t &Offset) {
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unsigned Length;
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uint64_t Value = decodeULEB128(Data + Offset, &Length);
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Offset = Offset + Length;
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return Value;
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}
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StringRef ARMAttributeParser::ParseString(const uint8_t *Data,
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uint32_t &Offset) {
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const char *String = reinterpret_cast<const char*>(Data + Offset);
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size_t Length = std::strlen(String);
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Offset = Offset + Length + 1;
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return StringRef(String, Length);
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}
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void ARMAttributeParser::IntegerAttribute(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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SW.printNumber(ARMBuildAttrs::AttrTypeAsString(Tag),
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ParseInteger(Data, Offset));
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}
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void ARMAttributeParser::StringAttribute(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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StringRef TagName = ARMBuildAttrs::AttrTypeAsString(Tag, /*TagPrefix*/false);
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DictScope AS(SW, "Attribute");
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SW.printNumber("Tag", Tag);
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if (!TagName.empty())
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SW.printString("TagName", TagName);
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SW.printString("Value", ParseString(Data, Offset));
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}
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void ARMAttributeParser::PrintAttribute(unsigned Tag, unsigned Value,
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StringRef ValueDesc) {
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StringRef TagName = ARMBuildAttrs::AttrTypeAsString(Tag, /*TagPrefix*/false);
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DictScope AS(SW, "Attribute");
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SW.printNumber("Tag", Tag);
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SW.printNumber("Value", Value);
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if (!TagName.empty())
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SW.printString("TagName", TagName);
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if (!ValueDesc.empty())
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SW.printString("Description", ValueDesc);
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}
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void ARMAttributeParser::CPU_arch(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Pre-v4", "ARM v4", "ARM v4T", "ARM v5T", "ARM v5TE", "ARM v5TEJ", "ARM v6",
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"ARM v6KZ", "ARM v6T2", "ARM v6K", "ARM v7", "ARM v6-M", "ARM v6S-M",
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"ARM v7E-M", "ARM v8"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::CPU_arch_profile(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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uint64_t Encoded = ParseInteger(Data, Offset);
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StringRef Profile;
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switch (Encoded) {
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default: Profile = "Unknown"; break;
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case 'A': Profile = "Application"; break;
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case 'R': Profile = "Real-time"; break;
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case 'M': Profile = "Microcontroller"; break;
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case 'S': Profile = "Classic"; break;
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case '0': Profile = "None"; break;
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}
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PrintAttribute(Tag, Encoded, Profile);
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}
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void ARMAttributeParser::ARM_ISA_use(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Not Permitted", "Permitted" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::THUMB_ISA_use(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Not Permitted", "Thumb-1", "Thumb-2" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::FP_arch(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Permitted", "VFPv1", "VFPv2", "VFPv3", "VFPv3-D16", "VFPv4",
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"VFPv4-D16", "ARMv8-a FP", "ARMv8-a FP-D16"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::WMMX_arch(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Not Permitted", "WMMXv1", "WMMXv2" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::Advanced_SIMD_arch(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Permitted", "NEONv1", "NEONv2+FMA", "ARMv8-a NEON"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::PCS_config(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"None", "Bare Platform", "Linux Application", "Linux DSO", "Palm OS 2004",
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"Reserved (Palm OS)", "Symbian OS 2004", "Reserved (Symbian OS)"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_PCS_R9_use(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "v6", "Static Base", "TLS", "Unused" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_PCS_RW_data(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Absolute", "PC-relative", "SB-relative", "Not Permitted"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_PCS_RO_data(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Absolute", "PC-relative", "Not Permitted" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_PCS_GOT_use(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Not Permitted", "Direct", "GOT-Indirect" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_PCS_wchar_t(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Permitted", "Unknown", "2-byte", "Unknown", "4-byte"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_FP_rounding(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "IEEE-754", "Runtime" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_FP_denormal(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Unsupported", "IEEE-754", "Sign Only" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_FP_exceptions(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Not Permitted", "IEEE-754" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_FP_user_exceptions(AttrType Tag,
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const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "Not Permitted", "IEEE-754" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_FP_number_model(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Permitted", "Finite Only", "RTABI", "IEEE-754"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_align_needed(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Permitted", "8-byte alignment", "4-byte alignment", "Reserved"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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Twine Description;
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if (Value < countof(Strings))
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Description = StringRef(Strings[Value]);
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else if (Value <= 12)
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Description = Twine("8-byte alignment, ") + utostr(exp2(Value))
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+ Twine("-byte extended alignment");
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else
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Description = "Invalid";
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PrintAttribute(Tag, Value, Description.str());
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}
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void ARMAttributeParser::ABI_align_preserved(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Required", "8-byte data alignment", "8-byte data and code alignment",
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"Reserved"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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Twine Description;
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if (Value < countof(Strings))
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Description = StringRef(Strings[Value]);
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else if (Value <= 12)
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Description = Twine("8-byte stack alignment, ") + utostr(exp2(Value))
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+ Twine("-byte data alignment");
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else
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Description = "Invalid";
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PrintAttribute(Tag, Value, Description.str());
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}
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void ARMAttributeParser::ABI_enum_size(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Not Permitted", "Packed", "Int32", "External Int32"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_HardFP_use(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"Tag_FP_arch", "Single-Precision", "Reserved", "Tag_FP_arch (deprecated)"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_VFP_args(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"AAPCS", "AAPCS VFP", "Custom", "Not Permitted"
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};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_WMMX_args(AttrType Tag, const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = { "AAPCS", "iWMMX", "Custom" };
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_optimization_goals(AttrType Tag,
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const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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"None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Debugging",
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||||
"Best Debugging"
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||||
};
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uint64_t Value = ParseInteger(Data, Offset);
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StringRef ValueDesc = (Value < countof(Strings)) ? Strings[Value] : NULL;
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PrintAttribute(Tag, Value, ValueDesc);
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}
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void ARMAttributeParser::ABI_FP_optimization_goals(AttrType Tag,
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const uint8_t *Data,
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uint32_t &Offset) {
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static const char *Strings[] = {
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||||
"None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Accuracy",
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||||
"Best Accuracy"
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||||
};
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||||
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||||
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";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user