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llvm-mirror/lib/Support/ARMAttributeParser.cpp
Chandler Carruth eb66b33867 Sort the remaining #include lines in include/... and lib/.... 
I did this a long time ago with a janky python script, but now
clang-format has built-in support for this. I fed clang-format every
line with a #include and let it re-sort things according to the precise
LLVM rules for include ordering baked into clang-format these days.

I've reverted a number of files where the results of sorting includes
isn't healthy. Either places where we have legacy code relying on
particular include ordering (where possible, I'll fix these separately)
or where we have particular formatting around #include lines that
I didn't want to disturb in this patch.

This patch is *entirely* mechanical. If you get merge conflicts or
anything, just ignore the changes in this patch and run clang-format
over your #include lines in the files.

Sorry for any noise here, but it is important to keep these things
stable. I was seeing an increasing number of patches with irrelevant
re-ordering of #include lines because clang-format was used. This patch
at least isolates that churn, makes it easy to skip when resolving
conflicts, and gets us to a clean baseline (again).

llvm-svn: 304787
2017-06-06 11:49:48 +00:00

709 lines
24 KiB
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//===--- 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 "llvm/Support/ARMAttributeParser.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/ScopedPrinter.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 },
};
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(DSP_extension),
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) {
uint64_t Value = ParseInteger(Data, Offset);
Attributes.insert(std::make_pair(Tag, Value));
if (SW)
SW->printNumber(ARMBuildAttrs::AttrTypeAsString(Tag), Value);
}
void ARMAttributeParser::StringAttribute(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
StringRef TagName = ARMBuildAttrs::AttrTypeAsString(Tag, /*TagPrefix*/false);
StringRef ValueDesc = ParseString(Data, Offset);
if (SW) {
DictScope AS(*SW, "Attribute");
SW->printNumber("Tag", Tag);
if (!TagName.empty())
SW->printString("TagName", TagName);
SW->printString("Value", ValueDesc);
}
}
void ARMAttributeParser::PrintAttribute(unsigned Tag, unsigned Value,
StringRef ValueDesc) {
Attributes.insert(std::make_pair(Tag, Value));
if (SW) {
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 *const 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 < array_lengthof(Strings)) ? Strings[Value] : nullptr;
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 *const Strings[] = { "Not Permitted", "Permitted" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::THUMB_ISA_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "Thumb-1", "Thumb-2" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::FP_arch(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const 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 < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::WMMX_arch(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "WMMXv1", "WMMXv2" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::Advanced_SIMD_arch(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Not Permitted", "NEONv1", "NEONv2+FMA", "ARMv8-a NEON", "ARMv8.1-a NEON"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::PCS_config(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const 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 < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_PCS_R9_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "v6", "Static Base", "TLS", "Unused" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_PCS_RW_data(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Absolute", "PC-relative", "SB-relative", "Not Permitted"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_PCS_RO_data(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Absolute", "PC-relative", "Not Permitted"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_PCS_GOT_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Not Permitted", "Direct", "GOT-Indirect"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_PCS_wchar_t(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Not Permitted", "Unknown", "2-byte", "Unknown", "4-byte"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_rounding(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "IEEE-754", "Runtime" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_denormal(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Unsupported", "IEEE-754", "Sign Only"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_exceptions(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "IEEE-754" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_user_exceptions(AttrType Tag,
const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "IEEE-754" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_number_model(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Not Permitted", "Finite Only", "RTABI", "IEEE-754"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_align_needed(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Not Permitted", "8-byte alignment", "4-byte alignment", "Reserved"
};
uint64_t Value = ParseInteger(Data, Offset);
std::string Description;
if (Value < array_lengthof(Strings))
Description = std::string(Strings[Value]);
else if (Value <= 12)
Description = std::string("8-byte alignment, ") + utostr(1ULL << 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 *const 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 < array_lengthof(Strings))
Description = std::string(Strings[Value]);
else if (Value <= 12)
Description = std::string("8-byte stack alignment, ") +
utostr(1ULL << 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 *const Strings[] = {
"Not Permitted", "Packed", "Int32", "External Int32"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_HardFP_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Tag_FP_arch", "Single-Precision", "Reserved", "Tag_FP_arch (deprecated)"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_VFP_args(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"AAPCS", "AAPCS VFP", "Custom", "Not Permitted"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_WMMX_args(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "AAPCS", "iWMMX", "Custom" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_optimization_goals(AttrType Tag,
const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Debugging",
"Best Debugging"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_optimization_goals(AttrType Tag,
const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"None", "Speed", "Aggressive Speed", "Size", "Aggressive Size", "Accuracy",
"Best Accuracy"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
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);
if (SW) {
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 *const Strings[] = { "Not Permitted", "v6-style" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::FP_HP_extension(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "If Available", "Permitted" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::ABI_FP_16bit_format(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "IEEE-754", "VFPv3" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::MPextension_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "Permitted" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::DIV_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"If Available", "Not Permitted", "Permitted"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::DSP_extension(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "Permitted" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::T2EE_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = { "Not Permitted", "Permitted" };
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
PrintAttribute(Tag, Value, ValueDesc);
}
void ARMAttributeParser::Virtualization_use(AttrType Tag, const uint8_t *Data,
uint32_t &Offset) {
static const char *const Strings[] = {
"Not Permitted", "TrustZone", "Virtualization Extensions",
"TrustZone + Virtualization Extensions"
};
uint64_t Value = ParseInteger(Data, Offset);
StringRef ValueDesc =
(Value < array_lengthof(Strings)) ? Strings[Value] : nullptr;
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 = array_lengthof(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 */
const char *VendorName = reinterpret_cast<const char*>(Data + Offset);
size_t VendorNameLength = std::strlen(VendorName);
Offset = Offset + VendorNameLength + 1;
if (SW) {
SW->printNumber("SectionLength", Length);
SW->printString("Vendor", StringRef(VendorName, VendorNameLength));
}
if (StringRef(VendorName, VendorNameLength).lower() != "aeabi") {
return;
}
while (Offset < Length) {
/// Tag_File | Tag_Section | Tag_Symbol uleb128:byte-size
uint8_t Tag = Data[Offset];
Offset = Offset + sizeof(Tag);
uint32_t Size =
*reinterpret_cast<const support::ulittle32_t*>(Data + Offset);
Offset = Offset + sizeof(Size);
if (SW) {
SW->printEnum("Tag", Tag, makeArrayRef(TagNames));
SW->printNumber("Size", 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;
}
if (SW) {
DictScope ASS(*SW, ScopeName);
if (!Indicies.empty())
SW->printList(IndexName, Indicies);
ParseAttributeList(Data, Offset, Length);
} else {
ParseAttributeList(Data, Offset, Length);
}
}
}
void ARMAttributeParser::Parse(ArrayRef<uint8_t> Section, bool isLittle) {
size_t Offset = 1;
unsigned SectionNumber = 0;
while (Offset < Section.size()) {
uint32_t SectionLength = isLittle ?
support::endian::read32le(Section.data() + Offset) :
support::endian::read32be(Section.data() + Offset);
if (SW) {
SW->startLine() << "Section " << ++SectionNumber << " {\n";
SW->indent();
}
ParseSubsection(Section.data() + Offset, SectionLength);
Offset = Offset + SectionLength;
if (SW) {
SW->unindent();
SW->startLine() << "}\n";
}
}
}
}
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