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author | Eric Christopher <echristo@gmail.com> | 2013-01-15 23:56:56 +0000 |
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committer | Eric Christopher <echristo@gmail.com> | 2013-01-15 23:56:56 +0000 |
commit | 72f7bfbf0e02bb11d3e7cca1f9598c5f9d9fa2ca (patch) | |
tree | ac0756254ac88cc3469f7274306ce15cab7f8a19 /lib/DebugInfo/DWARFFormValue.cpp | |
parent | af50dda4102114b23ac7d8c2db4703f22e02f02c (diff) | |
download | external_llvm-72f7bfbf0e02bb11d3e7cca1f9598c5f9d9fa2ca.zip external_llvm-72f7bfbf0e02bb11d3e7cca1f9598c5f9d9fa2ca.tar.gz external_llvm-72f7bfbf0e02bb11d3e7cca1f9598c5f9d9fa2ca.tar.bz2 |
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
Diffstat (limited to 'lib/DebugInfo/DWARFFormValue.cpp')
-rw-r--r-- | lib/DebugInfo/DWARFFormValue.cpp | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/lib/DebugInfo/DWARFFormValue.cpp b/lib/DebugInfo/DWARFFormValue.cpp index 14c6804..d1bcf96 100644 --- a/lib/DebugInfo/DWARFFormValue.cpp +++ b/lib/DebugInfo/DWARFFormValue.cpp @@ -325,6 +325,16 @@ DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const { switch (Form) { case DW_FORM_addr: OS << format("0x%016" PRIx64, uvalue); break; + case DW_FORM_GNU_addr_index: { + StringRef AddrOffsetSec = cu->getAddrOffsetSection(); + OS << format(" indexed (%8.8x) address = ", (uint32_t)uvalue); + if (AddrOffsetSec.size() != 0) { + DataExtractor DA(AddrOffsetSec, true, cu->getAddressByteSize()); + OS << format("0x%016" PRIx64, getIndirectAddress(&DA, cu)); + } else + OS << "<no .debug_addr section>"; + break; + } case DW_FORM_flag_present: OS << "true"; break; case DW_FORM_flag: case DW_FORM_data1: OS << format("0x%02x", (uint8_t)uvalue); break; @@ -452,10 +462,19 @@ DWARFFormValue::getIndirectCString(const DataExtractor *DS, if (!DS || !DSO) return NULL; uint32_t offset = Value.uval * 4; - uint32_t soffset = DSO->getULEB128(&offset); + uint32_t soffset = DSO->getU32(&offset); return DS->getCStr(&soffset); } +uint64_t +DWARFFormValue::getIndirectAddress(const DataExtractor *DA, + const DWARFCompileUnit *cu) const { + if (!DA) return 0; + + uint32_t offset = Value.uval * cu->getAddressByteSize(); + return DA->getAddress(&offset); +} + uint64_t DWARFFormValue::getReference(const DWARFCompileUnit *cu) const { uint64_t die_offset = Value.uval; switch (Form) { |