X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FDebugInfo%2FDWARFFormValue.cpp;h=1a1cf2452cd1a36aaf896fefd481cee86be01638;hb=4ff87aaf84f0fbc9dffa2757fd7a33c7ee9044ea;hp=1c7b9d7f493b64a0fe67434d6f7a79d284595541;hpb=5eccd36f1a8d917201b39697f3f1b6f45ecc139c;p=oota-llvm.git diff --git a/lib/DebugInfo/DWARFFormValue.cpp b/lib/DebugInfo/DWARFFormValue.cpp index 1c7b9d7f493..1a1cf2452cd 100644 --- a/lib/DebugInfo/DWARFFormValue.cpp +++ b/lib/DebugInfo/DWARFFormValue.cpp @@ -7,9 +7,10 @@ // //===----------------------------------------------------------------------===// -#include "DWARFFormValue.h" +#include "llvm/DebugInfo/DWARFFormValue.h" #include "DWARFCompileUnit.h" #include "DWARFContext.h" +#include "llvm/Support/Debug.h" #include "llvm/Support/Dwarf.h" #include "llvm/Support/Format.h" #include "llvm/Support/raw_ostream.h" @@ -17,65 +18,60 @@ using namespace llvm; using namespace dwarf; -static const uint8_t form_sizes_addr4[] = { - 0, // 0x00 unused - 4, // 0x01 DW_FORM_addr - 0, // 0x02 unused - 0, // 0x03 DW_FORM_block2 - 0, // 0x04 DW_FORM_block4 - 2, // 0x05 DW_FORM_data2 - 4, // 0x06 DW_FORM_data4 - 8, // 0x07 DW_FORM_data8 - 0, // 0x08 DW_FORM_string - 0, // 0x09 DW_FORM_block - 0, // 0x0a DW_FORM_block1 - 1, // 0x0b DW_FORM_data1 - 1, // 0x0c DW_FORM_flag - 0, // 0x0d DW_FORM_sdata - 4, // 0x0e DW_FORM_strp - 0, // 0x0f DW_FORM_udata - 4, // 0x10 DW_FORM_ref_addr - 1, // 0x11 DW_FORM_ref1 - 2, // 0x12 DW_FORM_ref2 - 4, // 0x13 DW_FORM_ref4 - 8, // 0x14 DW_FORM_ref8 - 0, // 0x15 DW_FORM_ref_udata - 0, // 0x16 DW_FORM_indirect +namespace { +template struct FixedFormSizes { + static const uint8_t sizes[]; }; +} -static const uint8_t form_sizes_addr8[] = { - 0, // 0x00 unused - 8, // 0x01 DW_FORM_addr - 0, // 0x02 unused - 0, // 0x03 DW_FORM_block2 - 0, // 0x04 DW_FORM_block4 - 2, // 0x05 DW_FORM_data2 - 4, // 0x06 DW_FORM_data4 - 8, // 0x07 DW_FORM_data8 - 0, // 0x08 DW_FORM_string - 0, // 0x09 DW_FORM_block - 0, // 0x0a DW_FORM_block1 - 1, // 0x0b DW_FORM_data1 - 1, // 0x0c DW_FORM_flag - 0, // 0x0d DW_FORM_sdata - 4, // 0x0e DW_FORM_strp - 0, // 0x0f DW_FORM_udata - 8, // 0x10 DW_FORM_ref_addr - 1, // 0x11 DW_FORM_ref1 - 2, // 0x12 DW_FORM_ref2 - 4, // 0x13 DW_FORM_ref4 - 8, // 0x14 DW_FORM_ref8 - 0, // 0x15 DW_FORM_ref_udata - 0, // 0x16 DW_FORM_indirect +template +const uint8_t FixedFormSizes::sizes[] = { + 0, // 0x00 unused + AddrSize, // 0x01 DW_FORM_addr + 0, // 0x02 unused + 0, // 0x03 DW_FORM_block2 + 0, // 0x04 DW_FORM_block4 + 2, // 0x05 DW_FORM_data2 + 4, // 0x06 DW_FORM_data4 + 8, // 0x07 DW_FORM_data8 + 0, // 0x08 DW_FORM_string + 0, // 0x09 DW_FORM_block + 0, // 0x0a DW_FORM_block1 + 1, // 0x0b DW_FORM_data1 + 1, // 0x0c DW_FORM_flag + 0, // 0x0d DW_FORM_sdata + 4, // 0x0e DW_FORM_strp + 0, // 0x0f DW_FORM_udata + RefAddrSize, // 0x10 DW_FORM_ref_addr + 1, // 0x11 DW_FORM_ref1 + 2, // 0x12 DW_FORM_ref2 + 4, // 0x13 DW_FORM_ref4 + 8, // 0x14 DW_FORM_ref8 + 0, // 0x15 DW_FORM_ref_udata + 0, // 0x16 DW_FORM_indirect + 4, // 0x17 DW_FORM_sec_offset + 0, // 0x18 DW_FORM_exprloc + 0, // 0x19 DW_FORM_flag_present + 8, // 0x20 DW_FORM_ref_sig8 }; +static uint8_t getRefAddrSize(uint8_t AddrSize, uint16_t Version) { + // FIXME: Support DWARF64. + return (Version == 2) ? AddrSize : 4; +} + const uint8_t * -DWARFFormValue::getFixedFormSizesForAddressSize(uint8_t addr_size) { - switch (addr_size) { - case 4: return form_sizes_addr4; - case 8: return form_sizes_addr8; - } - return NULL; +DWARFFormValue::getFixedFormSizes(uint8_t AddrSize, uint16_t Version) { + uint8_t RefAddrSize = getRefAddrSize(AddrSize, Version); + if (AddrSize == 4 && RefAddrSize == 4) + return FixedFormSizes<4, 4>::sizes; + if (AddrSize == 4 && RefAddrSize == 8) + return FixedFormSizes<4, 8>::sizes; + if (AddrSize == 8 && RefAddrSize == 4) + return FixedFormSizes<8, 4>::sizes; + if (AddrSize == 8 && RefAddrSize == 8) + return FixedFormSizes<8, 8>::sizes; + return 0; } bool @@ -90,9 +86,20 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr, indirect = false; switch (Form) { case DW_FORM_addr: - case DW_FORM_ref_addr: - Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize()); + case DW_FORM_ref_addr: { + uint16_t AddrSize = + (Form == DW_FORM_addr) + ? cu->getAddressByteSize() + : getRefAddrSize(cu->getAddressByteSize(), cu->getVersion()); + RelocAddrMap::const_iterator AI = cu->getRelocMap()->find(*offset_ptr); + if (AI != cu->getRelocMap()->end()) { + const std::pair &R = AI->second; + Value.uval = data.getUnsigned(offset_ptr, AddrSize) + R.second; + } else + Value.uval = data.getUnsigned(offset_ptr, AddrSize); break; + } + case DW_FORM_exprloc: case DW_FORM_block: Value.uval = data.getULEB128(offset_ptr); is_block = true; @@ -119,9 +126,13 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr, Value.uval = data.getU16(offset_ptr); break; case DW_FORM_data4: - case DW_FORM_ref4: + case DW_FORM_ref4: { + RelocAddrMap::const_iterator AI = cu->getRelocMap()->find(*offset_ptr); Value.uval = data.getU32(offset_ptr); + if (AI != cu->getRelocMap()->end()) + Value.uval += AI->second.second; break; + } case DW_FORM_data8: case DW_FORM_ref8: Value.uval = data.getU64(offset_ptr); @@ -129,9 +140,16 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr, case DW_FORM_sdata: Value.sval = data.getSLEB128(offset_ptr); break; - case DW_FORM_strp: - Value.uval = data.getU32(offset_ptr); + case DW_FORM_strp: { + RelocAddrMap::const_iterator AI + = cu->getRelocMap()->find(*offset_ptr); + if (AI != cu->getRelocMap()->end()) { + const std::pair &R = AI->second; + Value.uval = data.getU32(offset_ptr) + R.second; + } else + Value.uval = data.getU32(offset_ptr); break; + } case DW_FORM_udata: case DW_FORM_ref_udata: Value.uval = data.getULEB128(offset_ptr); @@ -141,12 +159,35 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr, // Set the string value to also be the data for inlined cstr form // values only so we can tell the differnence between DW_FORM_string // and DW_FORM_strp form values - Value.data = (uint8_t*)Value.cstr; + Value.data = (const uint8_t*)Value.cstr; break; case DW_FORM_indirect: Form = data.getULEB128(offset_ptr); indirect = true; break; + case DW_FORM_sec_offset: { + // FIXME: This is 64-bit for DWARF64. + RelocAddrMap::const_iterator AI + = cu->getRelocMap()->find(*offset_ptr); + if (AI != cu->getRelocMap()->end()) { + const std::pair &R = AI->second; + Value.uval = data.getU32(offset_ptr) + R.second; + } else + Value.uval = data.getU32(offset_ptr); + break; + } + case DW_FORM_flag_present: + Value.uval = 1; + break; + case DW_FORM_ref_sig8: + Value.uval = data.getU64(offset_ptr); + break; + case DW_FORM_GNU_addr_index: + Value.uval = data.getULEB128(offset_ptr); + break; + case DW_FORM_GNU_str_index: + Value.uval = data.getULEB128(offset_ptr); + break; default: return false; } @@ -175,10 +216,10 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, uint32_t *offset_ptr, const DWARFCompileUnit *cu) { bool indirect = false; do { - indirect = false; switch (form) { // Blocks if inlined data that have a length field and the data bytes // inlined in the .debug_info + case DW_FORM_exprloc: case DW_FORM_block: { uint64_t size = debug_info_data.getULEB128(offset_ptr); *offset_ptr += size; @@ -207,9 +248,15 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, // Compile unit address sized values case DW_FORM_addr: - case DW_FORM_ref_addr: *offset_ptr += cu->getAddressByteSize(); return true; + case DW_FORM_ref_addr: + *offset_ptr += getRefAddrSize(cu->getAddressByteSize(), cu->getVersion()); + return true; + + // 0 byte values - implied from the form. + case DW_FORM_flag_present: + return true; // 1 byte values case DW_FORM_data1: @@ -234,6 +281,7 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, // 8 byte values case DW_FORM_data8: case DW_FORM_ref8: + case DW_FORM_ref_sig8: *offset_ptr += 8; return true; @@ -242,6 +290,8 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, case DW_FORM_sdata: case DW_FORM_udata: case DW_FORM_ref_udata: + case DW_FORM_GNU_str_index: + case DW_FORM_GNU_addr_index: debug_info_data.getULEB128(offset_ptr); return true; @@ -249,6 +299,12 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, indirect = true; form = debug_info_data.getULEB128(offset_ptr); break; + + // FIXME: 4 for DWARF32, 8 for DWARF64. + case DW_FORM_sec_offset: + *offset_ptr += 4; + return true; + default: return false; } @@ -258,28 +314,43 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data, void DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const { - DataExtractor debug_str_data(cu->getContext().getStringSection(), true, 0); + DataExtractor debug_str_data(cu->getStringSection(), true, 0); + DataExtractor debug_str_offset_data(cu->getStringOffsetSection(), true, 0); uint64_t uvalue = getUnsigned(); bool cu_relative_offset = false; 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 << ""; + 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; case DW_FORM_data2: OS << format("0x%04x", (uint16_t)uvalue); break; case DW_FORM_data4: OS << format("0x%08x", (uint32_t)uvalue); break; + case DW_FORM_ref_sig8: case DW_FORM_data8: OS << format("0x%016" PRIx64, uvalue); break; case DW_FORM_string: OS << '"'; OS.write_escaped(getAsCString(NULL)); OS << '"'; break; + case DW_FORM_exprloc: case DW_FORM_block: case DW_FORM_block1: case DW_FORM_block2: case DW_FORM_block4: if (uvalue > 0) { switch (Form) { + case DW_FORM_exprloc: case DW_FORM_block: OS << format("<0x%" PRIx64 "> ", uvalue); break; case DW_FORM_block1: OS << format("<0x%2.2x> ", (uint8_t)uvalue); break; case DW_FORM_block2: OS << format("<0x%4.4x> ", (uint16_t)uvalue); break; @@ -313,6 +384,17 @@ DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const { } break; } + case DW_FORM_GNU_str_index: { + OS << format(" indexed (%8.8x) string = ", (uint32_t)uvalue); + const char *dbg_str = getIndirectCString(&debug_str_data, + &debug_str_offset_data); + if (dbg_str) { + OS << '"'; + OS.write_escaped(dbg_str); + OS << '"'; + } + break; + } case DW_FORM_ref_addr: OS << format("0x%016" PRIx64, uvalue); break; @@ -342,13 +424,19 @@ DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const { case DW_FORM_indirect: OS << "DW_FORM_indirect"; break; + + // Should be formatted to 64-bit for DWARF64. + case DW_FORM_sec_offset: + OS << format("0x%08x", (uint32_t)uvalue); + break; + default: OS << format("DW_FORM(0x%4.4x)", Form); break; } if (cu_relative_offset) - OS << format(" => {0x%8.8"PRIx64"}", (uvalue + (cu ? cu->getOffset() : 0))); + OS << format(" => {0x%8.8" PRIx64 "}", uvalue + (cu ? cu->getOffset() : 0)); } const char* @@ -362,6 +450,25 @@ DWARFFormValue::getAsCString(const DataExtractor *debug_str_data_ptr) const { return NULL; } +const char* +DWARFFormValue::getIndirectCString(const DataExtractor *DS, + const DataExtractor *DSO) const { + if (!DS || !DSO) return NULL; + + uint32_t offset = Value.uval * 4; + 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) { @@ -404,6 +511,7 @@ const uint8_t *DWARFFormValue::BlockData() const { bool DWARFFormValue::isBlockForm(uint16_t form) { switch (form) { + case DW_FORM_exprloc: case DW_FORM_block: case DW_FORM_block1: case DW_FORM_block2: