Split address information for DWARF5 split dwarf proposal. This involves
using the DW_FORM_GNU_addr_index and a separate .debug_addr section which
stays in the executable and is fully linked.
Sneak in two other small changes:
a) Print out the debug_str_offsets.dwo section.
b) Change form we're expecting the entries in the debug_str_offsets.dwo
section to take from ULEB128 to U32.
Add tests for all of this in the fission-cu.ll test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172578 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp
index 247ee5b..13a527b 100644
--- a/lib/DebugInfo/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARFContext.cpp
@@ -86,6 +86,14 @@
OS << format("0x%8.8x: \"%s\"\n", strDWOOffset, s);
strDWOOffset = offset;
}
+
+ OS << "\n.debug_str_offsets.dwo contents:\n";
+ DataExtractor strOffsetExt(getStringOffsetDWOSection(), isLittleEndian(), 0);
+ offset = 0;
+ while (offset < getStringOffsetDWOSection().size()) {
+ OS << format("0x%8.8x: ", offset);
+ OS << format("%8.8x\n", strOffsetExt.getU32(&offset));
+ }
}
const DWARFDebugAbbrev *DWARFContext::getDebugAbbrev() {
@@ -152,7 +160,8 @@
while (DIData.isValidOffset(offset)) {
CUs.push_back(DWARFCompileUnit(getDebugAbbrev(), getInfoSection(),
getAbbrevSection(), getRangeSection(),
- getStringSection(), "",
+ getStringSection(), StringRef(),
+ getAddrSection(),
&infoRelocMap(),
isLittleEndian()));
if (!CUs.back().extract(DIData, &offset)) {
@@ -174,6 +183,7 @@
getRangeDWOSection(),
getStringDWOSection(),
getStringOffsetDWOSection(),
+ getAddrSection(),
&infoDWORelocMap(),
isLittleEndian()));
if (!DWOCUs.back().extract(DIData, &offset)) {
@@ -386,6 +396,8 @@
StringDWOSection = data;
else if (name == "debug_str_offsets.dwo")
StringOffsetDWOSection = data;
+ else if (name == "debug_addr")
+ AddrSection = data;
// Any more debug info sections go here.
else
continue;