This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG79f22b1f99fd: Fix .debug_aranges parsing. (authored by
clayborg).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D87626/new/
https://reviews.llvm.org/D87626
Files:
lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugAranges.cpp
lldb/unittests/SymbolFile/DWARF/SymbolFileDWARFTests.cpp
Index: lldb/unittests/SymbolFile/DWARF/SymbolFileDWARFTests.cpp
===================================================================
--- lldb/unittests/SymbolFile/DWARF/SymbolFileDWARFTests.cpp
+++ lldb/unittests/SymbolFile/DWARF/SymbolFileDWARFTests.cpp
@@ -19,6 +19,7 @@
#include "Plugins/SymbolFile/DWARF/DWARFDataExtractor.h"
#include "Plugins/SymbolFile/DWARF/DWARFDebugAbbrev.h"
#include "Plugins/SymbolFile/DWARF/DWARFDebugArangeSet.h"
+#include "Plugins/SymbolFile/DWARF/DWARFDebugAranges.h"
#include "Plugins/SymbolFile/DWARF/SymbolFileDWARF.h"
#include "Plugins/SymbolFile/PDB/SymbolFilePDB.h"
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
@@ -70,7 +71,7 @@
TEST_F(SymbolFileDWARFTests, TestAbbrevOrder1Start1) {
// Test that if we have a .debug_abbrev that contains ordered abbreviation
// codes that start at 1, that we get O(1) access.
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -81,7 +82,7 @@
encoder.PutULEB128(DW_FORM_strp);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(2); // Abbrev code 2
encoder.PutULEB128(DW_TAG_subprogram);
encoder.PutHex8(DW_CHILDREN_no);
@@ -89,9 +90,9 @@
encoder.PutULEB128(DW_FORM_strp);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(0); // Abbrev code 0 (termination)
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -101,7 +102,7 @@
// Make sure we have O(1) access to each abbreviation by making sure the
// index offset is 1 and not UINT32_MAX
EXPECT_EQ(abbrev_set.GetIndexOffset(), 1u);
-
+
auto abbrev1 = abbrev_set.GetAbbreviationDeclaration(1);
EXPECT_EQ(abbrev1->Tag(), DW_TAG_compile_unit);
EXPECT_TRUE(abbrev1->HasChildren());
@@ -115,7 +116,7 @@
TEST_F(SymbolFileDWARFTests, TestAbbrevOrder1Start5) {
// Test that if we have a .debug_abbrev that contains ordered abbreviation
// codes that start at 5, that we get O(1) access.
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -126,7 +127,7 @@
encoder.PutULEB128(DW_FORM_strp);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(6); // Abbrev code 6
encoder.PutULEB128(DW_TAG_subprogram);
encoder.PutHex8(DW_CHILDREN_no);
@@ -134,9 +135,9 @@
encoder.PutULEB128(DW_FORM_strp);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(0); // Abbrev code 0 (termination)
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -146,7 +147,7 @@
// Make sure we have O(1) access to each abbreviation by making sure the
// index offset is 5 and not UINT32_MAX
EXPECT_EQ(abbrev_set.GetIndexOffset(), 5u);
-
+
auto abbrev1 = abbrev_set.GetAbbreviationDeclaration(5);
EXPECT_EQ(abbrev1->Tag(), DW_TAG_compile_unit);
EXPECT_TRUE(abbrev1->HasChildren());
@@ -160,7 +161,7 @@
TEST_F(SymbolFileDWARFTests, TestAbbrevOutOfOrder) {
// Test that if we have a .debug_abbrev that contains unordered abbreviation
// codes, that we can access the information correctly.
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -171,7 +172,7 @@
encoder.PutULEB128(DW_FORM_strp);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(1); // Abbrev code 1
encoder.PutULEB128(DW_TAG_subprogram);
encoder.PutHex8(DW_CHILDREN_no);
@@ -179,9 +180,9 @@
encoder.PutULEB128(DW_FORM_strp);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(0); // Abbrev code 0 (termination)
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -191,7 +192,7 @@
// Make sure we don't have O(1) access to each abbreviation by making sure
// the index offset is UINT32_MAX
EXPECT_EQ(abbrev_set.GetIndexOffset(), UINT32_MAX);
-
+
auto abbrev1 = abbrev_set.GetAbbreviationDeclaration(2);
EXPECT_EQ(abbrev1->Tag(), DW_TAG_compile_unit);
EXPECT_TRUE(abbrev1->HasChildren());
@@ -205,7 +206,7 @@
TEST_F(SymbolFileDWARFTests, TestAbbrevInvalidNULLTag) {
// Test that we detect when an abbreviation has a NULL tag and that we get
// an error when decoding.
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -214,9 +215,9 @@
encoder.PutHex8(DW_CHILDREN_no);
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(0); // Abbrev code 0 (termination)
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -232,7 +233,7 @@
TEST_F(SymbolFileDWARFTests, TestAbbrevNullAttrValidForm) {
// Test that we detect when an abbreviation has a NULL attribute and a non
// NULL form and that we get an error when decoding.
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -245,7 +246,7 @@
encoder.PutULEB128(0);
encoder.PutULEB128(0); // Abbrev code 0 (termination)
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -255,13 +256,12 @@
EXPECT_TRUE(bool(error));
EXPECT_EQ("malformed abbreviation declaration attribute",
llvm::toString(std::move(error)));
-
}
TEST_F(SymbolFileDWARFTests, TestAbbrevValidAttrNullForm) {
// Test that we detect when an abbreviation has a valid attribute and a
// NULL form and that we get an error when decoding.
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -272,9 +272,9 @@
encoder.PutULEB128(0); // NULL form
encoder.PutULEB128(0);
encoder.PutULEB128(0);
-
+
encoder.PutULEB128(0); // Abbrev code 0 (termination)
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -290,7 +290,7 @@
// Test that we detect when an abbreviation has a valid attribute and a
// form, but is missing the NULL attribute and form that terminates an
// abbreviation
-
+
const auto byte_order = eByteOrderLittle;
const uint8_t addr_size = 4;
StreamString encoder(Stream::eBinary, addr_size, byte_order);
@@ -300,7 +300,7 @@
encoder.PutULEB128(DW_AT_name);
encoder.PutULEB128(DW_FORM_strp);
// Don't add the NULL DW_AT and NULL DW_FORM terminator
-
+
DWARFDataExtractor data;
data.SetData(encoder.GetData(), encoder.GetSize(), byte_order);
DWARFAbbreviationDeclarationSet abbrev_set;
@@ -346,3 +346,42 @@
llvm::toString(std::move(error)));
EXPECT_EQ(off, 12U); // Parser should read no further than the segment size
}
+
+TEST_F(SymbolFileDWARFTests, ParseAranges) {
+ // Test we can successfully parse a DWARFDebugAranges. The initial error
+ // checking code had a bug where it would always return an empty address
+ // ranges for everything in .debug_aranges and no error.
+ const unsigned char binary_data[] = {
+ 60, 0, 0, 0, // unit_length
+ 2, 0, // DWARF version number
+ 255, 0, 0, 0, // offset into the .debug_info_table
+ 8, // address size
+ 0, // segment size
+ 0, 0, 0, 0, // pad bytes
+ // BEGIN TUPLES
+ // First tuple: [0x1000-0x1100)
+ 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Address 0x1000
+ 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Size 0x0100
+ // Second tuple: [0x2000-0x2100)
+ 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Address 0x2000
+ 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Size 0x0100
+ // Terminating tuple
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Terminator
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // Terminator
+ };
+ DWARFDataExtractor data;
+ data.SetData(static_cast<const void *>(binary_data), sizeof binary_data,
+ lldb::ByteOrder::eByteOrderLittle);
+ DWARFDebugAranges debug_aranges;
+ llvm::Error error = debug_aranges.extract(data);
+ ASSERT_FALSE(bool(error));
+ EXPECT_EQ(debug_aranges.GetNumRanges(), 2u);
+ EXPECT_EQ(debug_aranges.FindAddress(0x0fff), DW_INVALID_OFFSET);
+ EXPECT_EQ(debug_aranges.FindAddress(0x1000), 255u);
+ EXPECT_EQ(debug_aranges.FindAddress(0x1100 - 1), 255u);
+ EXPECT_EQ(debug_aranges.FindAddress(0x1100), DW_INVALID_OFFSET);
+ EXPECT_EQ(debug_aranges.FindAddress(0x1fff), DW_INVALID_OFFSET);
+ EXPECT_EQ(debug_aranges.FindAddress(0x2000), 255u);
+ EXPECT_EQ(debug_aranges.FindAddress(0x2100 - 1), 255u);
+ EXPECT_EQ(debug_aranges.FindAddress(0x2100), DW_INVALID_OFFSET);
+}
Index: lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugAranges.cpp
===================================================================
--- lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugAranges.cpp
+++ lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugAranges.cpp
@@ -39,7 +39,7 @@
Range range;
while (debug_aranges_data.ValidOffset(offset)) {
llvm::Error error = set.extract(debug_aranges_data, &offset);
- if (!error)
+ if (error)
return error;
const uint32_t num_descriptors = set.NumDescriptors();
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