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16f1969)
a relocation across sections. Do this for DW_AT_stmt list in the
skeleton CU and check the relocations in the debug_info section.
Add a FIXME for multiple CUs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178969
91177308-0d34-0410-b5e6-
96231b3b80d8
DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
DwarfStrSectionSym = TextSectionSym = 0;
DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = DwarfLineSectionSym = 0;
DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
DwarfStrSectionSym = TextSectionSym = 0;
DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = DwarfLineSectionSym = 0;
+ DwarfAddrSectionSym = 0;
DwarfAbbrevDWOSectionSym = DwarfStrDWOSectionSym = 0;
FunctionBeginSym = FunctionEndSym = 0;
DwarfAbbrevDWOSectionSym = DwarfStrDWOSectionSym = 0;
FunctionBeginSym = FunctionEndSym = 0;
emitSectionSym(Asm, TLOF.getDwarfPubTypesSection());
DwarfStrSectionSym =
emitSectionSym(Asm, TLOF.getDwarfStrSection(), "info_string");
emitSectionSym(Asm, TLOF.getDwarfPubTypesSection());
DwarfStrSectionSym =
emitSectionSym(Asm, TLOF.getDwarfStrSection(), "info_string");
DwarfStrDWOSectionSym =
emitSectionSym(Asm, TLOF.getDwarfStrDWOSection(), "skel_string");
DwarfStrDWOSectionSym =
emitSectionSym(Asm, TLOF.getDwarfStrDWOSection(), "skel_string");
+ DwarfAddrSectionSym =
+ emitSectionSym(Asm, TLOF.getDwarfAddrSection(), "addr_sec");
+ }
DwarfDebugRangeSectionSym = emitSectionSym(Asm, TLOF.getDwarfRangesSection(),
"debug_range");
DwarfDebugRangeSectionSym = emitSectionSym(Asm, TLOF.getDwarfRangesSection(),
"debug_range");
// This should be a unique identifier when we want to build .dwp files.
NewCU->addUInt(Die, dwarf::DW_AT_GNU_dwo_id, dwarf::DW_FORM_data8, 0);
// This should be a unique identifier when we want to build .dwp files.
NewCU->addUInt(Die, dwarf::DW_AT_GNU_dwo_id, dwarf::DW_FORM_data8, 0);
- // FIXME: The addr base should be relative for each compile unit, however,
- // this one is going to be 0 anyhow.
- NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset, 0);
+ // Relocate to the beginning of the addr_base section, else 0 for the beginning
+ // of the one for this compile unit.
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
+ NewCU->addLabel(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset,
+ DwarfAddrSectionSym);
+ else
+ NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset, 0);
// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
// into an entity. We're using 0, or a NULL label for this.
// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
// into an entity. We're using 0, or a NULL label for this.
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
+ // FIXME: Should handle multiple compile units.
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_sec_offset,
DwarfLineSectionSym);
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_sec_offset,
DwarfLineSectionSym);
// section offsets and are created by EmitSectionLabels.
MCSymbol *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
// section offsets and are created by EmitSectionLabels.
MCSymbol *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
- MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym;
+ MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
MCSymbol *FunctionBeginSym, *FunctionEndSym;
MCSymbol *DwarfAbbrevDWOSectionSym, *DwarfStrDWOSectionSym;
MCSymbol *FunctionBeginSym, *FunctionEndSym;
MCSymbol *DwarfAbbrevDWOSectionSym, *DwarfStrDWOSectionSym;
Form = data.getULEB128(offset_ptr);
indirect = true;
break;
Form = data.getULEB128(offset_ptr);
indirect = true;
break;
- case DW_FORM_sec_offset:
+ case DW_FORM_sec_offset: {
// FIXME: This is 64-bit for DWARF64.
// FIXME: This is 64-bit for DWARF64.
- Value.uval = data.getU32(offset_ptr);
+ RelocAddrMap::const_iterator AI
+ = cu->getRelocMap()->find(*offset_ptr);
+ if (AI != cu->getRelocMap()->end()) {
+ const std::pair<uint8_t, int64_t> &R = AI->second;
+ Value.uval = data.getU32(offset_ptr) + R.second;
+ } else
+ Value.uval = data.getU32(offset_ptr);
case DW_FORM_flag_present:
Value.uval = 1;
break;
case DW_FORM_flag_present:
Value.uval = 1;
break;
; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
+; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=OBJ %s
@a = common global i32 0, align 4
@a = common global i32 0, align 4
; CHECK: 0x00000008: 0000003b
; CHECK: 0x0000000c: 0000005f
; CHECK: 0x00000010: 00000061
; CHECK: 0x00000008: 0000003b
; CHECK: 0x0000000c: 0000005f
; CHECK: 0x00000010: 00000061
+
+; Object file checks
+; For x86-64-linux we should have this set of relocations for the debug info section
+;
+; OBJ: .debug_info
+; OBJ-NEXT: R_X86_64_32 .debug_abbrev
+; OBJ-NEXT: R_X86_64_32 .debug_str
+; OBJ-NEXT: R_X86_64_32 .debug_addr
+; OBJ-NEXT: R_X86_64_32 .debug_line
+; OBJ-NEXT: R_X86_64_32 .debug_str
+; OBJ-NEXT: }