From: Jonas Devlieghere Date: Fri, 21 Sep 2018 07:49:29 +0000 (+0000) Subject: [dwarfdump] Verify compatibility of attribute TAGs. X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7ef2c2021e2ab03c96296066666c8c01372f435c;p=platform%2Fupstream%2Fllvm.git [dwarfdump] Verify compatibility of attribute TAGs. Verify that DW_AT_specification and DW_AT_abstract_origin reference a DIE with a compatible tag. Differential revision: https://reviews.llvm.org/D38719 llvm-svn: 342712 --- diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h index d3be52d..39d43b9 100644 --- a/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h +++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h @@ -134,6 +134,10 @@ public: void addUnitsForDWOSection(DWARFContext &C, const DWARFSection &DWOSection, DWARFSectionKind SectionKind, bool Lazy = false); + /// Add an existing DWARFUnit to this UnitVector. This is used by the DWARF + /// verifier to process unit separately. + DWARFUnit *addUnit(std::unique_ptr Unit); + /// Returns number of all units held by this instance. unsigned getNumUnits() const { return size(); } /// Returns number of units from all .debug_info[.dwo] sections. diff --git a/llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp b/llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp index b2bc2c8..6c3c62d 100644 --- a/llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp +++ b/llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp @@ -112,6 +112,15 @@ void DWARFUnitVector::addUnitsImpl( } } +DWARFUnit *DWARFUnitVector::addUnit(std::unique_ptr Unit) { + auto I = std::upper_bound(begin(), end(), Unit, + [](const std::unique_ptr &LHS, + const std::unique_ptr &RHS) { + return LHS->getOffset() < RHS->getOffset(); + }); + return this->insert(I, std::move(Unit))->get(); +} + DWARFUnit *DWARFUnitVector::getUnitForOffset(uint32_t Offset) const { auto end = begin() + getNumInfoUnits(); auto *CU = diff --git a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp index 56187d2..94accc6 100644 --- a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp +++ b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp @@ -261,7 +261,8 @@ unsigned DWARFVerifier::verifyUnitSection(const DWARFSection &S, bool isUnitDWARF64 = false; bool isHeaderChainValid = true; bool hasDIE = DebugInfoData.isValidOffset(Offset); - DWARFUnitVector UnitVector{}; + DWARFUnitVector TypeUnitVector; + DWARFUnitVector CompileUnitVector; while (hasDIE) { OffsetStart = Offset; if (!verifyUnitHeader(DebugInfoData, &Offset, UnitIdx, UnitType, @@ -272,15 +273,15 @@ unsigned DWARFVerifier::verifyUnitSection(const DWARFSection &S, } else { DWARFUnitHeader Header; Header.extract(DCtx, DebugInfoData, &OffsetStart, SectionKind); - std::unique_ptr Unit; + DWARFUnit *Unit; switch (UnitType) { case dwarf::DW_UT_type: case dwarf::DW_UT_split_type: { - Unit.reset(new DWARFTypeUnit( + Unit = TypeUnitVector.addUnit(llvm::make_unique( DCtx, S, Header, DCtx.getDebugAbbrev(), &DObj.getRangeSection(), DObj.getStringSection(), DObj.getStringOffsetSection(), &DObj.getAppleObjCSection(), DObj.getLineSection(), - DCtx.isLittleEndian(), false, UnitVector)); + DCtx.isLittleEndian(), false, TypeUnitVector)); break; } case dwarf::DW_UT_skeleton: @@ -289,11 +290,11 @@ unsigned DWARFVerifier::verifyUnitSection(const DWARFSection &S, case dwarf::DW_UT_partial: // UnitType = 0 means that we are verifying a compile unit in DWARF v4. case 0: { - Unit.reset(new DWARFCompileUnit( + Unit = CompileUnitVector.addUnit(llvm::make_unique( DCtx, S, Header, DCtx.getDebugAbbrev(), &DObj.getRangeSection(), DObj.getStringSection(), DObj.getStringOffsetSection(), &DObj.getAppleObjCSection(), DObj.getLineSection(), - DCtx.isLittleEndian(), false, UnitVector)); + DCtx.isLittleEndian(), false, CompileUnitVector)); break; } default: { llvm_unreachable("Invalid UnitType."); } @@ -444,7 +445,24 @@ unsigned DWARFVerifier::verifyDebugInfoAttribute(const DWARFDie &Die, } break; } - + case DW_AT_specification: + case DW_AT_abstract_origin: { + if (auto ReferencedDie = Die.getAttributeValueAsReferencedDie(Attr)) { + auto DieTag = Die.getTag(); + auto RefTag = ReferencedDie.getTag(); + if (DieTag == RefTag) + break; + if (DieTag == DW_TAG_inlined_subroutine && RefTag == DW_TAG_subprogram) + break; + if (DieTag == DW_TAG_variable && RefTag == DW_TAG_member) + break; + ReportError("DIE with tag " + TagString(DieTag) + " has " + + AttributeString(Attr) + + " that points to DIE with " + "incompatible tag " + + TagString(RefTag)); + } + } default: break; } diff --git a/llvm/test/tools/llvm-dwarfdump/X86/verify_compatible_tags.s b/llvm/test/tools/llvm-dwarfdump/X86/verify_compatible_tags.s new file mode 100644 index 0000000..f4566ea --- /dev/null +++ b/llvm/test/tools/llvm-dwarfdump/X86/verify_compatible_tags.s @@ -0,0 +1,386 @@ +# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \ +# RUN: | not llvm-dwarfdump -v -verify - \ +# RUN: | FileCheck %s + +# Source: +# +# void f1() {} +# __attribute__((always_inline)) void f2() { +# f1(); +# } +# int main() { +# f2(); +# } +# +# Compile with: +# +# $ clang -g inlined.c -O0 -S -o inlined.s +# +# Manually patch the DW_AT_abstract_origin to point to the +# DW_TAG_base_type and DW_TAG_compile_unit respectively. + +# CHECK: error: DIE with tag DW_TAG_subprogram has DW_AT_abstract_origin that points to DIE with incompatible tag DW_TAG_base_type +# CHECK: DW_TAG_subprogram + +# CHECK: error: DIE with tag DW_TAG_inlined_subroutine has DW_AT_abstract_origin that points to DIE with incompatible tag DW_TAG_compile_unit +# CHECK: DW_TAG_inlined_subroutine + + .section __TEXT,__text,regular,pure_instructions + .macosx_version_min 10, 13 + .globl _f1 ## -- Begin function f1 + .p2align 4, 0x90 +_f1: ## @f1 +Lfunc_begin0: + .file 1 "inlined.c" + .loc 1 1 0 ## inlined.c:1:0 + .cfi_startproc +## BB#0: ## %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp +Ltmp0: + .loc 1 1 12 prologue_end ## inlined.c:1:12 + popq %rbp + retq +Ltmp1: +Lfunc_end0: + .cfi_endproc + ## -- End function + .globl _f2 ## -- Begin function f2 + .p2align 4, 0x90 +_f2: ## @f2 +Lfunc_begin1: + .loc 1 3 0 ## inlined.c:3:0 + .cfi_startproc +## BB#0: ## %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp +Ltmp2: + .loc 1 4 3 prologue_end ## inlined.c:4:3 + callq _f1 + .loc 1 5 1 ## inlined.c:5:1 + popq %rbp + retq +Ltmp3: +Lfunc_end1: + .cfi_endproc + ## -- End function + .globl _main ## -- Begin function main + .p2align 4, 0x90 +_main: ## @main +Lfunc_begin2: + .loc 1 7 0 ## inlined.c:7:0 + .cfi_startproc +## BB#0: ## %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp +Ltmp4: + .loc 1 4 3 prologue_end ## inlined.c:4:3 + callq _f1 + xorl %eax, %eax +Ltmp5: + .loc 1 9 1 ## inlined.c:9:1 + popq %rbp + retq +Ltmp6: +Lfunc_end2: + .cfi_endproc + ## -- End function + .section __DWARF,__debug_str,regular,debug +Linfo_string: + .asciz "clang version 6.0.0 (trunk 315286) (llvm/trunk 315291)" ## string offset=0 + .asciz "inlined.c" ## string offset=55 + .asciz "/private/tmp" ## string offset=65 + .asciz "f1" ## string offset=78 + .asciz "f2" ## string offset=81 + .asciz "main" ## string offset=84 + .asciz "int" ## string offset=89 + .section __DWARF,__debug_abbrev,regular,debug +Lsection_abbrev: + .byte 1 ## Abbreviation Code + .byte 17 ## DW_TAG_compile_unit + .byte 1 ## DW_CHILDREN_yes + .byte 37 ## DW_AT_producer + .byte 14 ## DW_FORM_strp + .byte 19 ## DW_AT_language + .byte 5 ## DW_FORM_data2 + .byte 3 ## DW_AT_name + .byte 14 ## DW_FORM_strp + .byte 16 ## DW_AT_stmt_list + .byte 23 ## DW_FORM_sec_offset + .byte 27 ## DW_AT_comp_dir + .byte 14 ## DW_FORM_strp + .byte 17 ## DW_AT_low_pc + .byte 1 ## DW_FORM_addr + .byte 18 ## DW_AT_high_pc + .byte 6 ## DW_FORM_data4 + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 2 ## Abbreviation Code + .byte 46 ## DW_TAG_subprogram + .byte 0 ## DW_CHILDREN_no + .byte 17 ## DW_AT_low_pc + .byte 1 ## DW_FORM_addr + .byte 18 ## DW_AT_high_pc + .byte 6 ## DW_FORM_data4 + .byte 64 ## DW_AT_frame_base + .byte 24 ## DW_FORM_exprloc + .byte 3 ## DW_AT_name + .byte 14 ## DW_FORM_strp + .byte 58 ## DW_AT_decl_file + .byte 11 ## DW_FORM_data1 + .byte 59 ## DW_AT_decl_line + .byte 11 ## DW_FORM_data1 + .byte 63 ## DW_AT_external + .byte 25 ## DW_FORM_flag_present + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 3 ## Abbreviation Code + .byte 46 ## DW_TAG_subprogram + .byte 0 ## DW_CHILDREN_no + .byte 17 ## DW_AT_low_pc + .byte 1 ## DW_FORM_addr + .byte 18 ## DW_AT_high_pc + .byte 6 ## DW_FORM_data4 + .byte 64 ## DW_AT_frame_base + .byte 24 ## DW_FORM_exprloc + .byte 49 ## DW_AT_abstract_origin + .byte 19 ## DW_FORM_ref4 + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 4 ## Abbreviation Code + .byte 46 ## DW_TAG_subprogram + .byte 0 ## DW_CHILDREN_no + .byte 3 ## DW_AT_name + .byte 14 ## DW_FORM_strp + .byte 58 ## DW_AT_decl_file + .byte 11 ## DW_FORM_data1 + .byte 59 ## DW_AT_decl_line + .byte 11 ## DW_FORM_data1 + .byte 63 ## DW_AT_external + .byte 25 ## DW_FORM_flag_present + .byte 32 ## DW_AT_inline + .byte 11 ## DW_FORM_data1 + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 5 ## Abbreviation Code + .byte 46 ## DW_TAG_subprogram + .byte 1 ## DW_CHILDREN_yes + .byte 17 ## DW_AT_low_pc + .byte 1 ## DW_FORM_addr + .byte 18 ## DW_AT_high_pc + .byte 6 ## DW_FORM_data4 + .byte 64 ## DW_AT_frame_base + .byte 24 ## DW_FORM_exprloc + .byte 3 ## DW_AT_name + .byte 14 ## DW_FORM_strp + .byte 58 ## DW_AT_decl_file + .byte 11 ## DW_FORM_data1 + .byte 59 ## DW_AT_decl_line + .byte 11 ## DW_FORM_data1 + .byte 73 ## DW_AT_type + .byte 19 ## DW_FORM_ref4 + .byte 63 ## DW_AT_external + .byte 25 ## DW_FORM_flag_present + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 6 ## Abbreviation Code + .byte 29 ## DW_TAG_inlined_subroutine + .byte 0 ## DW_CHILDREN_no + .byte 49 ## DW_AT_abstract_origin + .byte 19 ## DW_FORM_ref4 + .byte 17 ## DW_AT_low_pc + .byte 1 ## DW_FORM_addr + .byte 18 ## DW_AT_high_pc + .byte 6 ## DW_FORM_data4 + .byte 88 ## DW_AT_call_file + .byte 11 ## DW_FORM_data1 + .byte 89 ## DW_AT_call_line + .byte 11 ## DW_FORM_data1 + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 7 ## Abbreviation Code + .byte 36 ## DW_TAG_base_type + .byte 0 ## DW_CHILDREN_no + .byte 3 ## DW_AT_name + .byte 14 ## DW_FORM_strp + .byte 62 ## DW_AT_encoding + .byte 11 ## DW_FORM_data1 + .byte 11 ## DW_AT_byte_size + .byte 11 ## DW_FORM_data1 + .byte 0 ## EOM(1) + .byte 0 ## EOM(2) + .byte 0 ## EOM(3) + .section __DWARF,__debug_info,regular,debug +Lsection_info: +Lcu_begin0: + .long 139 ## Length of Unit + .short 4 ## DWARF version number +Lset0 = Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section + .long Lset0 + .byte 8 ## Address Size (in bytes) + .byte 1 ## Abbrev [1] 0xb:0x84 DW_TAG_compile_unit + .long 0 ## DW_AT_producer + .short 12 ## DW_AT_language + .long 55 ## DW_AT_name +Lset1 = Lline_table_start0-Lsection_line ## DW_AT_stmt_list + .long Lset1 + .long 65 ## DW_AT_comp_dir + .quad Lfunc_begin0 ## DW_AT_low_pc +Lset2 = Lfunc_end2-Lfunc_begin0 ## DW_AT_high_pc + .long Lset2 + .byte 2 ## Abbrev [2] 0x2a:0x15 DW_TAG_subprogram + .quad Lfunc_begin0 ## DW_AT_low_pc +Lset3 = Lfunc_end0-Lfunc_begin0 ## DW_AT_high_pc + .long Lset3 + .byte 1 ## DW_AT_frame_base + .byte 86 + .long 78 ## DW_AT_name + .byte 1 ## DW_AT_decl_file + .byte 1 ## DW_AT_decl_line + ## DW_AT_external + .byte 3 ## Abbrev [3] 0x3f:0x13 DW_TAG_subprogram + .quad Lfunc_begin1 ## DW_AT_low_pc +Lset4 = Lfunc_end1-Lfunc_begin1 ## DW_AT_high_pc + .long Lset4 + .byte 1 ## DW_AT_frame_base + .byte 86 + .long 135 ## DW_AT_abstract_origin + .byte 4 ## Abbrev [4] 0x52:0x8 DW_TAG_subprogram + .long 81 ## DW_AT_name + .byte 1 ## DW_AT_decl_file + .byte 2 ## DW_AT_decl_line + ## DW_AT_external + .byte 1 ## DW_AT_inline + .byte 5 ## Abbrev [5] 0x5a:0x2d DW_TAG_subprogram + .quad Lfunc_begin2 ## DW_AT_low_pc +Lset5 = Lfunc_end2-Lfunc_begin2 ## DW_AT_high_pc + .long Lset5 + .byte 1 ## DW_AT_frame_base + .byte 86 + .long 84 ## DW_AT_name + .byte 1 ## DW_AT_decl_file + .byte 6 ## DW_AT_decl_line + .long 135 ## DW_AT_type + ## DW_AT_external + .byte 6 ## Abbrev [6] 0x73:0x13 DW_TAG_inlined_subroutine + .long 11 ## DW_AT_abstract_origin + .quad Ltmp4 ## DW_AT_low_pc +Lset6 = Ltmp5-Ltmp4 ## DW_AT_high_pc + .long Lset6 + .byte 1 ## DW_AT_call_file + .byte 8 ## DW_AT_call_line + .byte 0 ## End Of Children Mark + .byte 7 ## Abbrev [7] 0x87:0x7 DW_TAG_base_type + .long 89 ## DW_AT_name + .byte 5 ## DW_AT_encoding + .byte 4 ## DW_AT_byte_size + .byte 0 ## End Of Children Mark + .section __DWARF,__debug_ranges,regular,debug +Ldebug_range: + .section __DWARF,__debug_macinfo,regular,debug +Ldebug_macinfo: +Lcu_macro_begin0: + .byte 0 ## End Of Macro List Mark + .section __DWARF,__apple_names,regular,debug +Lnames_begin: + .long 1212240712 ## Header Magic + .short 1 ## Header Version + .short 0 ## Header Hash Function + .long 3 ## Header Bucket Count + .long 3 ## Header Hash Count + .long 12 ## Header Data Length + .long 0 ## HeaderData Die Offset Base + .long 1 ## HeaderData Atom Count + .short 1 ## DW_ATOM_die_offset + .short 6 ## DW_FORM_data4 + .long -1 ## Bucket 0 + .long 0 ## Bucket 1 + .long 2 ## Bucket 2 + .long 5863324 ## Hash in Bucket 1 + .long 2090499946 ## Hash in Bucket 1 + .long 5863325 ## Hash in Bucket 2 + .long LNames1-Lnames_begin ## Offset in Bucket 1 + .long LNames0-Lnames_begin ## Offset in Bucket 1 + .long LNames2-Lnames_begin ## Offset in Bucket 2 +LNames1: + .long 78 ## f1 + .long 1 ## Num DIEs + .long 42 + .long 0 +LNames0: + .long 84 ## main + .long 1 ## Num DIEs + .long 90 + .long 0 +LNames2: + .long 81 ## f2 + .long 2 ## Num DIEs + .long 63 + .long 115 + .long 0 + .section __DWARF,__apple_objc,regular,debug +Lobjc_begin: + .long 1212240712 ## Header Magic + .short 1 ## Header Version + .short 0 ## Header Hash Function + .long 1 ## Header Bucket Count + .long 0 ## Header Hash Count + .long 12 ## Header Data Length + .long 0 ## HeaderData Die Offset Base + .long 1 ## HeaderData Atom Count + .short 1 ## DW_ATOM_die_offset + .short 6 ## DW_FORM_data4 + .long -1 ## Bucket 0 + .section __DWARF,__apple_namespac,regular,debug +Lnamespac_begin: + .long 1212240712 ## Header Magic + .short 1 ## Header Version + .short 0 ## Header Hash Function + .long 1 ## Header Bucket Count + .long 0 ## Header Hash Count + .long 12 ## Header Data Length + .long 0 ## HeaderData Die Offset Base + .long 1 ## HeaderData Atom Count + .short 1 ## DW_ATOM_die_offset + .short 6 ## DW_FORM_data4 + .long -1 ## Bucket 0 + .section __DWARF,__apple_types,regular,debug +Ltypes_begin: + .long 1212240712 ## Header Magic + .short 1 ## Header Version + .short 0 ## Header Hash Function + .long 1 ## Header Bucket Count + .long 1 ## Header Hash Count + .long 20 ## Header Data Length + .long 0 ## HeaderData Die Offset Base + .long 3 ## HeaderData Atom Count + .short 1 ## DW_ATOM_die_offset + .short 6 ## DW_FORM_data4 + .short 3 ## DW_ATOM_die_tag + .short 5 ## DW_FORM_data2 + .short 4 ## DW_ATOM_type_flags + .short 11 ## DW_FORM_data1 + .long 0 ## Bucket 0 + .long 193495088 ## Hash in Bucket 0 + .long Ltypes0-Ltypes_begin ## Offset in Bucket 0 +Ltypes0: + .long 89 ## int + .long 1 ## Num DIEs + .long 135 + .short 36 + .byte 0 + .long 0 + +.subsections_via_symbols + .section __DWARF,__debug_line,regular,debug +Lsection_line: +Lline_table_start0: