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authorSaleem Abdulrasool <compnerd@compnerd.org>2014-01-30 04:46:33 +0000
committerSaleem Abdulrasool <compnerd@compnerd.org>2014-01-30 04:46:33 +0000
commit459c9497772f7d4e8567233a99f126198ec93b68 (patch)
tree93a072e96630a1deda04f3c44526be79f470514b /tools/llvm-readobj
parent7a38b33decb80eff92060b7ad95ff1b877f685c3 (diff)
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
Diffstat (limited to 'tools/llvm-readobj')
-rw-r--r--tools/llvm-readobj/ARMAttributeParser.cpp639
-rw-r--r--tools/llvm-readobj/ARMAttributeParser.h124
-rw-r--r--tools/llvm-readobj/CMakeLists.txt1
-rw-r--r--tools/llvm-readobj/ELFDumper.cpp44
-rw-r--r--tools/llvm-readobj/ObjDumper.h3
-rw-r--r--tools/llvm-readobj/StreamWriter.h13
-rw-r--r--tools/llvm-readobj/llvm-readobj.cpp9
-rw-r--r--tools/llvm-readobj/llvm-readobj.h1
8 files changed, 834 insertions, 0 deletions
diff --git a/tools/llvm-readobj/ARMAttributeParser.cpp b/tools/llvm-readobj/ARMAttributeParser.cpp
new file mode 100644
index 00000000000..a9f6a2eba61
--- /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);
+
+ Twine Description;
+ if (Value < countof(Strings))
+ Description = StringRef(Strings[Value]);
+ else if (Value <= 12)
+ Description = Twine("8-byte alignment, ") + utostr(exp2(Value))
+ + Twine("-byte extended alignment");
+ else
+ Description = "Invalid";
+
+ PrintAttribute(Tag, Value, Description.str());
+}
+
+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);
+
+ Twine Description;
+ if (Value < countof(Strings))
+ Description = StringRef(Strings[Value]);
+ else if (Value <= 12)
+ Description = Twine("8-byte stack alignment, ") + utostr(exp2(Value))
+ + Twine("-byte data alignment");
+ else
+ Description = "Invalid";
+
+ PrintAttribute(Tag, Value, Description.str());
+}
+
+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";
+ }
+}
+}
+
diff --git a/tools/llvm-readobj/ARMAttributeParser.h b/tools/llvm-readobj/ARMAttributeParser.h
new file mode 100644
index 00000000000..c2862513b75
--- /dev/null
+++ b/tools/llvm-readobj/ARMAttributeParser.h
@@ -0,0 +1,124 @@
+//===--- ARMAttributeParser.h - 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.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_READOBJ_ARMATTRIBUTE_PARSER_H
+#define LLVM_READOBJ_ARMATTRIBUTE_PARSER_H
+
+#include "StreamWriter.h"
+#include "llvm/Support/ARMBuildAttributes.h"
+
+namespace llvm {
+class StringRef;
+
+class ARMAttributeParser {
+ StreamWriter &SW;
+
+ struct DisplayHandler {
+ ARMBuildAttrs::AttrType Attribute;
+ void (ARMAttributeParser::*Routine)(ARMBuildAttrs::AttrType,
+ const uint8_t *, uint32_t &);
+ };
+ static const DisplayHandler DisplayRoutines[];
+
+ uint64_t ParseInteger(const uint8_t *Data, uint32_t &Offset);
+ StringRef ParseString(const uint8_t *Data, uint32_t &Offset);
+
+ void IntegerAttribute(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void StringAttribute(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+
+ void PrintAttribute(unsigned Tag, unsigned Value, StringRef ValueDesc);
+
+ void CPU_arch(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void CPU_arch_profile(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ARM_ISA_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void THUMB_ISA_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void FP_arch(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void WMMX_arch(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void Advanced_SIMD_arch(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void PCS_config(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_PCS_R9_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_PCS_RW_data(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_PCS_RO_data(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_PCS_GOT_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_PCS_wchar_t(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_rounding(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_denormal(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_exceptions(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_user_exceptions(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_number_model(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_align_needed(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_align_preserved(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_enum_size(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_HardFP_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_VFP_args(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_WMMX_args(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_optimization_goals(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_optimization_goals(ARMBuildAttrs::AttrType Tag,
+ const uint8_t *Data, uint32_t &Offset);
+ void compatibility(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void CPU_unaligned_access(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void FP_HP_extension(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void ABI_FP_16bit_format(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void MPextension_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void DIV_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void T2EE_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void Virtualization_use(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+ void nodefaults(ARMBuildAttrs::AttrType Tag, const uint8_t *Data,
+ uint32_t &Offset);
+
+ void ParseAttributeList(const uint8_t *Data, uint32_t &Offset,
+ uint32_t Length);
+ void ParseIndexList(const uint8_t *Data, uint32_t &Offset,
+ SmallVectorImpl<uint8_t> &IndexList);
+ void ParseSubsection(const uint8_t *Data, uint32_t Length);
+public:
+ ARMAttributeParser(StreamWriter &SW) : SW(SW) {}
+
+ void Parse(ArrayRef<uint8_t> Section);
+};
+
+}
+
+#endif
+
diff --git a/tools/llvm-readobj/CMakeLists.txt b/tools/llvm-readobj/CMakeLists.txt
index e67b970df66..036185d4817 100644
--- a/tools/llvm-readobj/CMakeLists.txt
+++ b/tools/llvm-readobj/CMakeLists.txt
@@ -12,4 +12,5 @@ add_llvm_tool(llvm-readobj
MachODumper.cpp
Error.cpp
StreamWriter.cpp
+ ARMAttributeParser.cpp
)
diff --git a/tools/llvm-readobj/ELFDumper.cpp b/tools/llvm-readobj/ELFDumper.cpp
index feb77fd5644..bf3c9423f52 100644
--- a/tools/llvm-readobj/ELFDumper.cpp
+++ b/tools/llvm-readobj/ELFDumper.cpp
@@ -13,12 +13,15 @@
//===----------------------------------------------------------------------===//
#include "llvm-readobj.h"
+#include "ARMAttributeParser.h"
#include "ARMEHABIPrinter.h"
#include "Error.h"
#include "ObjDumper.h"
#include "StreamWriter.h"
#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Support/ARMBuildAttributes.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/MathExtras.h"
@@ -50,6 +53,8 @@ public:
virtual void printNeededLibraries() LLVM_OVERRIDE;
virtual void printProgramHeaders() LLVM_OVERRIDE;
+ virtual void printAttributes() LLVM_OVERRIDE;
+
private:
typedef ELFFile<ELFT> ELFO;
typedef typename ELFO::Elf_Shdr Elf_Shdr;
@@ -855,3 +860,42 @@ void ELFDumper<ELFT>::printProgramHeaders() {
W.printNumber("Alignment", PI->p_align);
}
}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printAttributes() {
+ W.startLine() << "Attributes not implemented.\n";
+}
+
+namespace {
+template <>
+void ELFDumper<ELFType<support::little, 2, false> >::printAttributes() {
+ if (Obj->getHeader()->e_machine != EM_ARM) {
+ W.startLine() << "Attributes not implemented.\n";
+ return;
+ }
+
+ DictScope BA(W, "BuildAttributes");
+ for (typename ELFO::Elf_Shdr_Iter SI = Obj->begin_sections(),
+ SE = Obj->end_sections(); SI != SE; ++SI) {
+ if (SI->sh_type != ELF::SHT_ARM_ATTRIBUTES)
+ continue;
+
+ ErrorOr<ArrayRef<uint8_t> > Contents = Obj->getSectionContents(&(*SI));
+ if (!Contents)
+ continue;
+
+ if ((*Contents)[0] != ARMBuildAttrs::Format_Version) {
+ errs() << "unrecognised FormatVersion: 0x" << utohexstr((*Contents)[0])
+ << '\n';
+ continue;
+ }
+
+ W.printHex("FormatVersion", (*Contents)[0]);
+ if (Contents->size() == 1)
+ continue;
+
+ ARMAttributeParser(W).Parse(*Contents);
+ }
+}
+}
+
diff --git a/tools/llvm-readobj/ObjDumper.h b/tools/llvm-readobj/ObjDumper.h
index 6918e28cb93..64bab056321 100644
--- a/tools/llvm-readobj/ObjDumper.h
+++ b/tools/llvm-readobj/ObjDumper.h
@@ -40,6 +40,9 @@ public:
virtual void printNeededLibraries() { }
virtual void printProgramHeaders() { }
+ // Only implemented for ARM ELF at this time.
+ virtual void printAttributes() { }
+
protected:
StreamWriter& W;
};
diff --git a/tools/llvm-readobj/StreamWriter.h b/tools/llvm-readobj/StreamWriter.h
index 7771d71ef7b..c40077a1799 100644
--- a/tools/llvm-readobj/StreamWriter.h
+++ b/tools/llvm-readobj/StreamWriter.h
@@ -172,6 +172,19 @@ public:
startLine() << Label << ": " << int(Value) << "\n";
}
+ template <typename T_>
+ void printList(StringRef Label, const SmallVectorImpl<T_> &List) {
+ startLine() << Label << ": [";
+ bool Comma = false;
+ for (unsigned LI = 0, LE = List.size(); LI != LE; ++LI) {
+ if (Comma)
+ OS << ", ";
+ OS << List[LI];
+ Comma = true;
+ }
+ OS << "]\n";
+ }
+
template<typename T>
void printHex(StringRef Label, T Value) {
startLine() << Label << ": " << hex(Value) << "\n";
diff --git a/tools/llvm-readobj/llvm-readobj.cpp b/tools/llvm-readobj/llvm-readobj.cpp
index 624619522e2..56f60114fe0 100644
--- a/tools/llvm-readobj/llvm-readobj.cpp
+++ b/tools/llvm-readobj/llvm-readobj.cpp
@@ -129,6 +129,12 @@ namespace opts {
// -codeview-linetables
cl::opt<bool> CodeViewLineTables("codeview-linetables",
cl::desc("Display CodeView line table information"));
+
+ // -arm-attributes, -a
+ cl::opt<bool> ARMAttributes("arm-attributes",
+ cl::desc("Display the ARM attributes section"));
+ cl::alias ARMAttributesShort("-a", cl::desc("Alias for --arm-attributes"),
+ cl::aliasopt(ARMAttributes));
} // namespace opts
static int ReturnValue = EXIT_SUCCESS;
@@ -227,6 +233,9 @@ static void dumpObject(const ObjectFile *Obj) {
Dumper->printNeededLibraries();
if (opts::ProgramHeaders)
Dumper->printProgramHeaders();
+ if (Obj->getArch() == llvm::Triple::arm && Obj->isELF())
+ if (opts::ARMAttributes)
+ Dumper->printAttributes();
}
diff --git a/tools/llvm-readobj/llvm-readobj.h b/tools/llvm-readobj/llvm-readobj.h
index f0bba42e918..cc5c85d8dac 100644
--- a/tools/llvm-readobj/llvm-readobj.h
+++ b/tools/llvm-readobj/llvm-readobj.h
@@ -39,6 +39,7 @@ namespace opts {
extern llvm::cl::opt<bool> UnwindInfo;
extern llvm::cl::opt<bool> ExpandRelocs;
extern llvm::cl::opt<bool> CodeViewLineTables;
+ extern llvm::cl::opt<bool> ARMAttributes;
} // namespace opts
#define LLVM_READOBJ_ENUM_ENT(ns, enum) \