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[dwarfdump] Add support for -debug-loc=OFFSET
This patch adds support for passing an offset to -debug-loc. Differential revision: https://reviews.llvm.org/D38237 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314286 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jonas Devlieghere
parent
68d31bd128
commit
932c395059
@ -58,12 +58,16 @@ private:
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public:
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/// Print the location lists found within the debug_loc section.
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void dump(raw_ostream &OS, const MCRegisterInfo *RegInfo) const;
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void dump(raw_ostream &OS, const MCRegisterInfo *RegInfo,
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Optional<uint64_t> Offset) const;
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/// Parse the debug_loc section accessible via the 'data' parameter using the
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/// address size also given in 'data' to interpret the address ranges.
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void parse(const DWARFDataExtractor &data);
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/// Return the location list at the given offset or nullptr.
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LocationList const *getLocationListAtOffset(uint64_t Offset) const;
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Optional<LocationList> parseOneLocationList(DWARFDataExtractor Data,
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uint32_t *Offset);
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};
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@ -94,7 +98,11 @@ private:
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public:
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void parse(DataExtractor data);
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void dump(raw_ostream &OS, const MCRegisterInfo *RegInfo) const;
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void dump(raw_ostream &OS, const MCRegisterInfo *RegInfo,
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Optional<uint64_t> Offset) const;
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/// Return the location list at the given offset or nullptr.
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LocationList const *getLocationListAtOffset(uint64_t Offset) const;
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static Optional<LocationList> parseOneLocationList(DataExtractor Data,
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uint32_t *Offset);
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@ -291,11 +291,11 @@ void DWARFContext::dump(
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if (shouldDump(Explicit, ".debug_loc", DIDT_ID_DebugLoc,
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DObj->getLocSection().Data)) {
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getDebugLoc()->dump(OS, getRegisterInfo());
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getDebugLoc()->dump(OS, getRegisterInfo(), DumpOffset);
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}
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if (shouldDump(ExplicitDWO, ".debug_loc.dwo", DIDT_ID_DebugLoc,
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DObj->getLocDWOSection().Data)) {
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getDebugLocDWO()->dump(OS, getRegisterInfo());
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getDebugLocDWO()->dump(OS, getRegisterInfo(), DumpOffset);
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}
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if (shouldDump(Explicit, ".debug_frame", DIDT_ID_DebugFrame,
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@ -50,11 +50,32 @@ void DWARFDebugLoc::LocationList::dump(raw_ostream &OS, bool IsLittleEndian,
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}
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}
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void DWARFDebugLoc::dump(raw_ostream &OS, const MCRegisterInfo *MRI) const {
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for (const LocationList &L : Locations) {
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DWARFDebugLoc::LocationList const *
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DWARFDebugLoc::getLocationListAtOffset(uint64_t Offset) const {
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auto It = std::lower_bound(
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Locations.begin(), Locations.end(), Offset,
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[](const LocationList &L, uint64_t Offset) { return L.Offset < Offset; });
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if (It != Locations.end() && It->Offset == Offset)
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return &(*It);
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return nullptr;
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}
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void DWARFDebugLoc::dump(raw_ostream &OS, const MCRegisterInfo *MRI,
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Optional<uint64_t> Offset) const {
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auto DumpLocationList = [&](const LocationList &L) {
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OS << format("0x%8.8x: ", L.Offset);
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L.dump(OS, IsLittleEndian, AddressSize, MRI, 12);
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OS << "\n\n";
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};
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if (Offset) {
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if (auto *L = getLocationListAtOffset(*Offset))
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DumpLocationList(*L);
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return;
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}
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for (const LocationList &L : Locations) {
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DumpLocationList(L);
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}
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}
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@ -161,6 +182,16 @@ void DWARFDebugLocDWO::parse(DataExtractor data) {
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}
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}
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DWARFDebugLocDWO::LocationList const *
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DWARFDebugLocDWO::getLocationListAtOffset(uint64_t Offset) const {
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auto It = std::lower_bound(
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Locations.begin(), Locations.end(), Offset,
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[](const LocationList &L, uint64_t Offset) { return L.Offset < Offset; });
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if (It != Locations.end() && It->Offset == Offset)
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return &(*It);
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return nullptr;
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}
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void DWARFDebugLocDWO::LocationList::dump(raw_ostream &OS, bool IsLittleEndian,
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unsigned AddressSize,
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const MCRegisterInfo *MRI,
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@ -173,10 +204,21 @@ void DWARFDebugLocDWO::LocationList::dump(raw_ostream &OS, bool IsLittleEndian,
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}
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}
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void DWARFDebugLocDWO::dump(raw_ostream &OS, const MCRegisterInfo *MRI) const {
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for (const LocationList &L : Locations) {
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void DWARFDebugLocDWO::dump(raw_ostream &OS, const MCRegisterInfo *MRI,
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Optional<uint64_t> Offset) const {
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auto DumpLocationList = [&](const LocationList &L) {
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OS << format("0x%8.8x: ", L.Offset);
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L.dump(OS, IsLittleEndian, AddressSize, MRI, /*Indent=*/12);
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OS << "\n\n";
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};
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if (Offset) {
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if (auto *L = getLocationListAtOffset(*Offset))
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DumpLocationList(*L);
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return;
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}
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for (const LocationList &L : Locations) {
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DumpLocationList(L);
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}
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}
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17
test/tools/llvm-dwarfdump/X86/debug_loc_offset.test
Normal file
17
test/tools/llvm-dwarfdump/X86/debug_loc_offset.test
Normal file
@ -0,0 +1,17 @@
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RUN: llvm-mc %S/debugloc.s -filetype obj -triple x86_64-linux-elf -o - \
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RUN: | llvm-dwarfdump --debug-loc=0 - \
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RUN: | FileCheck %s --check-prefix=CHECK-A
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# CHECK-A: .debug_loc contents:
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# CHECK-A: 0x00000000:
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# CHECK-A-NEXT: 0x0000000000000000 - 0x0000000000000003: DW_OP_reg5 RDI
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# CHECK-A-NEXT: 0x0000000000000003 - 0x0000000000000004: DW_OP_reg0 RAX
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RUN: llvm-mc %S/debugloc.s -filetype obj -triple x86_64-linux-elf -o - \
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RUN: | llvm-dwarfdump --debug-loc=0x36 - \
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RUN: | FileCheck %s --check-prefix=CHECK-B
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# CHECK-B: .debug_loc contents:
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# CHECK-B: 0x00000036:
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# CHECK-B-NEXT: 0x0000000000000010 - 0x0000000000000013: DW_OP_reg5 RDI
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# CHECK-B-NEXT: 0x0000000000000013 - 0x0000000000000014: DW_OP_reg0 RAX
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277
test/tools/llvm-dwarfdump/X86/debugloc.s
Normal file
277
test/tools/llvm-dwarfdump/X86/debugloc.s
Normal file
@ -0,0 +1,277 @@
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# RUN: llvm-mc %s -filetype obj -triple x86_64-linux-elf -o - \
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# RUN: | llvm-dwarfdump --debug-loc - \
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# RUN: | FileCheck %s
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# CHECK: .debug_loc contents:
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# CHECK: 0x00000000:
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# CHECK-NEXT: 0x0000000000000000 - 0x0000000000000003: DW_OP_reg5 RDI
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# CHECK-NEXT: 0x0000000000000003 - 0x0000000000000004: DW_OP_reg0 RAX
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# CHECK: 0x00000036:
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# CHECK-NEXT: 0x0000000000000010 - 0x0000000000000013: DW_OP_reg5 RDI
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# CHECK-NEXT: 0x0000000000000013 - 0x0000000000000014: DW_OP_reg0 RAX
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# Source:
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# int* foo(int* i) { return i; }
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# int* bar(int* i) { return i; }
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# Compile with:
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# clang -g -O3 test.c -S -o debugloc.s
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.text
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.file "test.c"
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.globl foo
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.align 16, 0x90
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.type foo,@function
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foo: # @foo
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.Lfunc_begin0:
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.file 1 "test.c"
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.loc 1 1 0 # test.c:1:0
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.cfi_startproc
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# BB#0:
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#DEBUG_VALUE: foo:i <- %RDI
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.loc 1 2 3 prologue_end # test.c:2:3
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movq %rdi, %rax
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.Ltmp0:
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#DEBUG_VALUE: foo:i <- %RAX
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retq
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.Ltmp1:
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.Lfunc_end0:
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.size foo, .Lfunc_end0-foo
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.cfi_endproc
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.globl bar
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.align 16, 0x90
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.type bar,@function
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bar: # @bar
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.Lfunc_begin1:
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.loc 1 5 0 # test.c:5:0
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.cfi_startproc
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# BB#0:
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#DEBUG_VALUE: bar:i <- %RDI
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.loc 1 6 3 prologue_end # test.c:6:3
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movq %rdi, %rax
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.Ltmp2:
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#DEBUG_VALUE: bar:i <- %RAX
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retq
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.Ltmp3:
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.Lfunc_end1:
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.size bar, .Lfunc_end1-bar
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.cfi_endproc
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.section .debug_str,"MS",@progbits,1
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.Linfo_string0:
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.asciz "clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)" # string offset=0
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.Linfo_string1:
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.asciz "test.c" # string offset=54
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.Linfo_string2:
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.asciz "/tmp" # string offset=61
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.Linfo_string3:
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.asciz "foo" # string offset=66
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.Linfo_string4:
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.asciz "int" # string offset=70
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.Linfo_string5:
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.asciz "bar" # string offset=74
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.Linfo_string6:
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.asciz "i" # string offset=78
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.section .debug_loc,"",@progbits
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.Ldebug_loc0:
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.quad .Lfunc_begin0-.Lfunc_begin0
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.quad .Ltmp0-.Lfunc_begin0
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.short 1 # Loc expr size
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.byte 85 # DW_OP_reg5
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.quad .Ltmp0-.Lfunc_begin0
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.quad .Lfunc_end0-.Lfunc_begin0
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.short 1 # Loc expr size
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.byte 80 # DW_OP_reg0
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.quad 0
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.quad 0
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.Ldebug_loc1:
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.quad .Lfunc_begin1-.Lfunc_begin0
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.quad .Ltmp2-.Lfunc_begin0
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.short 1 # Loc expr size
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.byte 85 # DW_OP_reg5
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.quad .Ltmp2-.Lfunc_begin0
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.quad .Lfunc_end1-.Lfunc_begin0
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.short 1 # Loc expr size
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.byte 80 # DW_OP_reg0
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.quad 0
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.quad 0
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.section .debug_abbrev,"",@progbits
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.Lsection_abbrev:
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 1 # DW_CHILDREN_yes
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.byte 37 # DW_AT_producer
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.byte 14 # DW_FORM_strp
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.byte 19 # DW_AT_language
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.byte 5 # DW_FORM_data2
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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.byte 16 # DW_AT_stmt_list
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.byte 23 # DW_FORM_sec_offset
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.byte 27 # DW_AT_comp_dir
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.byte 14 # DW_FORM_strp
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.ascii "\341\177" # DW_AT_APPLE_optimized
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.byte 25 # DW_FORM_flag_present
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.byte 17 # DW_AT_low_pc
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.byte 1 # DW_FORM_addr
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.byte 18 # DW_AT_high_pc
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.byte 6 # DW_FORM_data4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 2 # Abbreviation Code
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.byte 46 # DW_TAG_subprogram
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.byte 1 # DW_CHILDREN_yes
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.byte 17 # DW_AT_low_pc
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.byte 1 # DW_FORM_addr
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.byte 18 # DW_AT_high_pc
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.byte 6 # DW_FORM_data4
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.ascii "\347\177" # DW_AT_APPLE_omit_frame_ptr
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.byte 25 # DW_FORM_flag_present
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.byte 64 # DW_AT_frame_base
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.byte 24 # DW_FORM_exprloc
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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.byte 58 # DW_AT_decl_file
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.byte 11 # DW_FORM_data1
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.byte 59 # DW_AT_decl_line
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.byte 11 # DW_FORM_data1
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.byte 39 # DW_AT_prototyped
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.byte 25 # DW_FORM_flag_present
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 63 # DW_AT_external
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.byte 25 # DW_FORM_flag_present
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.ascii "\341\177" # DW_AT_APPLE_optimized
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.byte 25 # DW_FORM_flag_present
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 3 # Abbreviation Code
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.byte 5 # DW_TAG_formal_parameter
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.byte 0 # DW_CHILDREN_no
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.byte 2 # DW_AT_location
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.byte 23 # DW_FORM_sec_offset
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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.byte 58 # DW_AT_decl_file
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.byte 11 # DW_FORM_data1
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.byte 59 # DW_AT_decl_line
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.byte 11 # DW_FORM_data1
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 4 # Abbreviation Code
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.byte 15 # DW_TAG_pointer_type
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.byte 0 # DW_CHILDREN_no
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 5 # Abbreviation Code
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.byte 36 # DW_TAG_base_type
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.byte 0 # DW_CHILDREN_no
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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.byte 62 # DW_AT_encoding
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.byte 11 # DW_FORM_data1
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.byte 11 # DW_AT_byte_size
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.byte 11 # DW_FORM_data1
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 0 # EOM(3)
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.section .debug_info,"",@progbits
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.Lsection_info:
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.Lcu_begin0:
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.long 133 # Length of Unit
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.short 4 # DWARF version number
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.long .Lsection_abbrev # Offset Into Abbrev. Section
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.byte 8 # Address Size (in bytes)
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.byte 1 # Abbrev [1] 0xb:0x7e DW_TAG_compile_unit
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.long .Linfo_string0 # DW_AT_producer
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.short 12 # DW_AT_language
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.long .Linfo_string1 # DW_AT_name
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.long .Lline_table_start0 # DW_AT_stmt_list
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.long .Linfo_string2 # DW_AT_comp_dir
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# DW_AT_APPLE_optimized
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.quad .Lfunc_begin0 # DW_AT_low_pc
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.long .Lfunc_end1-.Lfunc_begin0 # DW_AT_high_pc
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.byte 2 # Abbrev [2] 0x2a:0x29 DW_TAG_subprogram
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.quad .Lfunc_begin0 # DW_AT_low_pc
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.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
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# DW_AT_APPLE_omit_frame_ptr
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.byte 1 # DW_AT_frame_base
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.byte 87
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.long .Linfo_string3 # DW_AT_name
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.byte 1 # DW_AT_decl_file
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.byte 1 # DW_AT_decl_line
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# DW_AT_prototyped
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.long 124 # DW_AT_type
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# DW_AT_external
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# DW_AT_APPLE_optimized
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.byte 3 # Abbrev [3] 0x43:0xf DW_TAG_formal_parameter
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.long .Ldebug_loc0 # DW_AT_location
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.long .Linfo_string6 # DW_AT_name
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.byte 1 # DW_AT_decl_file
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.byte 1 # DW_AT_decl_line
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.long 124 # DW_AT_type
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.byte 0 # End Of Children Mark
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.byte 2 # Abbrev [2] 0x53:0x29 DW_TAG_subprogram
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.quad .Lfunc_begin1 # DW_AT_low_pc
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.long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
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# DW_AT_APPLE_omit_frame_ptr
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.byte 1 # DW_AT_frame_base
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.byte 87
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.long .Linfo_string5 # DW_AT_name
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.byte 1 # DW_AT_decl_file
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.byte 5 # DW_AT_decl_line
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# DW_AT_prototyped
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.long 124 # DW_AT_type
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# DW_AT_external
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# DW_AT_APPLE_optimized
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.byte 3 # Abbrev [3] 0x6c:0xf DW_TAG_formal_parameter
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.long .Ldebug_loc1 # DW_AT_location
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.long .Linfo_string6 # DW_AT_name
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.byte 1 # DW_AT_decl_file
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.byte 5 # DW_AT_decl_line
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.long 124 # DW_AT_type
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.byte 0 # End Of Children Mark
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.byte 4 # Abbrev [4] 0x7c:0x5 DW_TAG_pointer_type
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.long 129 # DW_AT_type
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.byte 5 # Abbrev [5] 0x81:0x7 DW_TAG_base_type
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.long .Linfo_string4 # DW_AT_name
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.byte 5 # DW_AT_encoding
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.byte 4 # DW_AT_byte_size
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.byte 0 # End Of Children Mark
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.section .debug_ranges,"",@progbits
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.Ldebug_range:
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.section .debug_macinfo,"",@progbits
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.byte 0 # End Of Macro List Mark
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.section .debug_pubnames,"",@progbits
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.long .LpubNames_end0-.LpubNames_begin0 # Length of Public Names Info
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.LpubNames_begin0:
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.short 2 # DWARF Version
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.long .Lcu_begin0 # Offset of Compilation Unit Info
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.long 137 # Compilation Unit Length
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.long 42 # DIE offset
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.asciz "foo" # External Name
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.long 83 # DIE offset
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.asciz "bar" # External Name
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.long 0 # End Mark
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.LpubNames_end0:
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.section .debug_pubtypes,"",@progbits
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.long .LpubTypes_end0-.LpubTypes_begin0 # Length of Public Types Info
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.LpubTypes_begin0:
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.short 2 # DWARF Version
|
||||
.long .Lcu_begin0 # Offset of Compilation Unit Info
|
||||
.long 137 # Compilation Unit Length
|
||||
.long 129 # DIE offset
|
||||
.asciz "int" # External Name
|
||||
.long 0 # End Mark
|
||||
.LpubTypes_end0:
|
||||
|
||||
.ident "clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)"
|
||||
.section ".note.GNU-stack","",@progbits
|
||||
.section .debug_line,"",@progbits
|
||||
.Lline_table_start0:
|
||||
Loading…
Reference in New Issue
Block a user