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authorDavid Blaikie <dblaikie@gmail.com>2014-02-24 23:58:54 +0000
committerDavid Blaikie <dblaikie@gmail.com>2014-02-24 23:58:54 +0000
commit1d4736e0b10c28221a0d7007d45a1725de7be14a (patch)
tree4aec673cd7bc0a91b023baa321705b84c55a13a0 /llvm
parent509fe8fd63669ec89e82be63eb7e80a682db4eac (diff)
downloadbcm5719-llvm-1d4736e0b10c28221a0d7007d45a1725de7be14a.tar.gz
bcm5719-llvm-1d4736e0b10c28221a0d7007d45a1725de7be14a.zip
llvm-dwarfdump: Support for debug_line.dwo section for file names for type units under fission.
llvm-svn: 202091
Diffstat (limited to 'llvm')
-rw-r--r--llvm/include/llvm/DebugInfo/DIContext.h1
-rw-r--r--llvm/lib/DebugInfo/DWARFContext.cpp11
-rw-r--r--llvm/lib/DebugInfo/DWARFContext.h3
-rw-r--r--llvm/lib/DebugInfo/DWARFDebugLine.cpp28
-rw-r--r--llvm/lib/DebugInfo/DWARFDebugLine.h8
-rw-r--r--llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.cc10
-rw-r--r--llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.elf-x86-64bin0 -> 1377 bytes
-rw-r--r--llvm/test/DebugInfo/dwarfdump-line-dwo.test6
-rw-r--r--llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp1
9 files changed, 53 insertions, 15 deletions
diff --git a/llvm/include/llvm/DebugInfo/DIContext.h b/llvm/include/llvm/DebugInfo/DIContext.h
index 37f2a260ae6..f04dc001f4b 100644
--- a/llvm/include/llvm/DebugInfo/DIContext.h
+++ b/llvm/include/llvm/DebugInfo/DIContext.h
@@ -107,6 +107,7 @@ enum DIDumpType {
DIDT_Types,
DIDT_TypesDwo,
DIDT_Line,
+ DIDT_LineDwo,
DIDT_Loc,
DIDT_Ranges,
DIDT_Pubnames,
diff --git a/llvm/lib/DebugInfo/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARFContext.cpp
index b5b75b0408e..e17387b31d3 100644
--- a/llvm/lib/DebugInfo/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARFContext.cpp
@@ -136,6 +136,16 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
}
}
+ if (DumpType == DIDT_All || DumpType == DIDT_LineDwo) {
+ OS << "\n.debug_line.dwo contents:\n";
+ unsigned stmtOffset = 0;
+ DataExtractor lineData(getLineDWOSection().Data, isLittleEndian(),
+ savedAddressByteSize);
+ DWARFDebugLine::DumpingState state(OS);
+ while (DWARFDebugLine::parsePrologue(lineData, &stmtOffset, &state.Prologue))
+ state.finalize();
+ }
+
if (DumpType == DIDT_All || DumpType == DIDT_Str) {
OS << "\n.debug_str contents:\n";
DataExtractor strData(getStringSection(), isLittleEndian(), 0);
@@ -645,6 +655,7 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
.Case("debug_gnu_pubtypes", &GnuPubTypesSection)
.Case("debug_info.dwo", &InfoDWOSection.Data)
.Case("debug_abbrev.dwo", &AbbrevDWOSection)
+ .Case("debug_line.dwo", &LineDWOSection.Data)
.Case("debug_str.dwo", &StringDWOSection)
.Case("debug_str_offsets.dwo", &StringOffsetDWOSection)
.Case("debug_addr", &AddrSection)
diff --git a/llvm/lib/DebugInfo/DWARFContext.h b/llvm/lib/DebugInfo/DWARFContext.h
index 9bac69d6e52..2a534de49de 100644
--- a/llvm/lib/DebugInfo/DWARFContext.h
+++ b/llvm/lib/DebugInfo/DWARFContext.h
@@ -166,6 +166,7 @@ public:
virtual StringRef getARangeSection() = 0;
virtual StringRef getDebugFrameSection() = 0;
virtual const Section &getLineSection() = 0;
+ virtual const Section &getLineDWOSection() = 0;
virtual StringRef getStringSection() = 0;
virtual StringRef getRangeSection() = 0;
virtual StringRef getPubNamesSection() = 0;
@@ -208,6 +209,7 @@ class DWARFContextInMemory : public DWARFContext {
StringRef ARangeSection;
StringRef DebugFrameSection;
Section LineSection;
+ Section LineDWOSection;
StringRef StringSection;
StringRef RangeSection;
StringRef PubNamesSection;
@@ -238,6 +240,7 @@ public:
virtual StringRef getARangeSection() { return ARangeSection; }
virtual StringRef getDebugFrameSection() { return DebugFrameSection; }
virtual const Section &getLineSection() { return LineSection; }
+ virtual const Section &getLineDWOSection() { return LineDWOSection; }
virtual StringRef getStringSection() { return StringSection; }
virtual StringRef getRangeSection() { return RangeSection; }
virtual StringRef getPubNamesSection() { return PubNamesSection; }
diff --git a/llvm/lib/DebugInfo/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARFDebugLine.cpp
index b2c8502d57f..83490b1d3ff 100644
--- a/llvm/lib/DebugInfo/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARFDebugLine.cpp
@@ -18,14 +18,15 @@ using namespace dwarf;
void DWARFDebugLine::Prologue::dump(raw_ostream &OS) const {
OS << "Line table prologue:\n"
- << format(" total_length: 0x%8.8x\n", TotalLength)
- << format(" version: %u\n", Version)
- << format("prologue_length: 0x%8.8x\n", PrologueLength)
- << format("min_inst_length: %u\n", MinInstLength)
- << format("default_is_stmt: %u\n", DefaultIsStmt)
- << format(" line_base: %i\n", LineBase)
- << format(" line_range: %u\n", LineRange)
- << format(" opcode_base: %u\n", OpcodeBase);
+ << format(" total_length: 0x%8.8x\n", TotalLength)
+ << format(" version: %u\n", Version)
+ << format(" prologue_length: 0x%8.8x\n", PrologueLength)
+ << format(" min_inst_length: %u\n", MinInstLength)
+ << format(Version >= 4 ? "max_ops_per_inst: %u\n" : "", MaxOpsPerInst)
+ << format(" default_is_stmt: %u\n", DefaultIsStmt)
+ << format(" line_base: %i\n", LineBase)
+ << format(" line_range: %u\n", LineRange)
+ << format(" opcode_base: %u\n", OpcodeBase);
for (uint32_t i = 0; i < StandardOpcodeLengths.size(); ++i)
OS << format("standard_opcode_lengths[%s] = %u\n", LNStandardString(i+1),
@@ -172,12 +173,14 @@ DWARFDebugLine::parsePrologue(DataExtractor debug_line_data,
prologue->clear();
prologue->TotalLength = debug_line_data.getU32(offset_ptr);
prologue->Version = debug_line_data.getU16(offset_ptr);
- if (prologue->Version != 2)
+ if (prologue->Version < 2)
return false;
prologue->PrologueLength = debug_line_data.getU32(offset_ptr);
const uint32_t end_prologue_offset = prologue->PrologueLength + *offset_ptr;
prologue->MinInstLength = debug_line_data.getU8(offset_ptr);
+ if (prologue->Version >= 4)
+ prologue->MaxOpsPerInst = debug_line_data.getU8(offset_ptr);
prologue->DefaultIsStmt = debug_line_data.getU8(offset_ptr);
prologue->LineBase = debug_line_data.getU8(offset_ptr);
prologue->LineRange = debug_line_data.getU8(offset_ptr);
@@ -220,10 +223,9 @@ DWARFDebugLine::parsePrologue(DataExtractor debug_line_data,
return true;
}
-bool
-DWARFDebugLine::parseStatementTable(DataExtractor debug_line_data,
- const RelocAddrMap *RMap,
- uint32_t *offset_ptr, State &state) {
+bool DWARFDebugLine::parseStatementTable(DataExtractor debug_line_data,
+ const RelocAddrMap *RMap,
+ uint32_t *offset_ptr, State &state) {
const uint32_t debug_line_offset = *offset_ptr;
Prologue *prologue = &state.Prologue;
diff --git a/llvm/lib/DebugInfo/DWARFDebugLine.h b/llvm/lib/DebugInfo/DWARFDebugLine.h
index 9e93cc86dd2..88b1aee9228 100644
--- a/llvm/lib/DebugInfo/DWARFDebugLine.h
+++ b/llvm/lib/DebugInfo/DWARFDebugLine.h
@@ -34,8 +34,9 @@ public:
struct Prologue {
Prologue()
- : TotalLength(0), Version(0), PrologueLength(0), MinInstLength(0),
- DefaultIsStmt(0), LineBase(0), LineRange(0), OpcodeBase(0) {}
+ : TotalLength(0), Version(0), PrologueLength(0), MinInstLength(0),
+ MaxOpsPerInst(0), DefaultIsStmt(0), LineBase(0), LineRange(0),
+ OpcodeBase(0) {}
// The size in bytes of the statement information for this compilation unit
// (not including the total_length field itself).
@@ -49,6 +50,9 @@ public:
// program opcodes that alter the address register first multiply their
// operands by this value.
uint8_t MinInstLength;
+ // The maximum number of individual operations that may be encoded in an
+ // instruction.
+ uint8_t MaxOpsPerInst;
// The initial value of theis_stmtregister.
uint8_t DefaultIsStmt;
// This parameter affects the meaning of the special opcodes. See below.
diff --git a/llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.cc b/llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.cc
new file mode 100644
index 00000000000..2784ae24ee5
--- /dev/null
+++ b/llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.cc
@@ -0,0 +1,10 @@
+struct foo {
+};
+
+foo f;
+
+// Built with GCC
+// $ mkdir -p /tmp/dbginfo
+// $ cp dwarfdump-line-dwo.cc /tmp/dbginfo
+// $ cd /tmp/dbginfo
+// $ g++ -c -fdebug-types-section dwarfdump-line-dwo.cc -o <output>
diff --git a/llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.elf-x86-64 b/llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.elf-x86-64
new file mode 100644
index 00000000000..9f1d267dde1
--- /dev/null
+++ b/llvm/test/DebugInfo/Inputs/dwarfdump-line-dwo.elf-x86-64
Binary files differ
diff --git a/llvm/test/DebugInfo/dwarfdump-line-dwo.test b/llvm/test/DebugInfo/dwarfdump-line-dwo.test
new file mode 100644
index 00000000000..3178a5d2992
--- /dev/null
+++ b/llvm/test/DebugInfo/dwarfdump-line-dwo.test
@@ -0,0 +1,6 @@
+RUN: llvm-dwarfdump %p/Inputs/dwarfdump-line-dwo.elf-x86-64 | FileCheck %s
+
+CHECK: .debug_line.dwo contents:
+CHECK: version: 4
+CHECK: max_ops_per_inst: 1
+CHECK: file_names[ 1]{{.*}}dwarfdump-line-dwo.cc
diff --git a/llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp b/llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
index f827909dc31..103779eafdc 100644
--- a/llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
+++ b/llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
@@ -65,6 +65,7 @@ DumpType("debug-dump", cl::init(DIDT_All),
clEnumValN(DIDT_Types, "types", ".debug_types"),
clEnumValN(DIDT_TypesDwo, "types.dwo", ".debug_types.dwo"),
clEnumValN(DIDT_Line, "line", ".debug_line"),
+ clEnumValN(DIDT_LineDwo, "line.dwo", ".debug_line.dwo"),
clEnumValN(DIDT_Loc, "loc", ".debug_loc"),
clEnumValN(DIDT_Frames, "frames", ".debug_frame"),
clEnumValN(DIDT_Ranges, "ranges", ".debug_ranges"),
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