//
//===----------------------------------------------------------------------===//
-#include "DWARFFormValue.h"
+#include "llvm/DebugInfo/DWARFFormValue.h"
#include "DWARFCompileUnit.h"
#include "DWARFContext.h"
#include "llvm/Support/Debug.h"
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
- 4, // 0x17 DW_FORM_sec_offset
- 0, // 0x18 DW_FORM_exprloc
- 0, // 0x19 DW_FORM_flag_present
- 8, // 0x20 DW_FORM_ref_sig8
+namespace {
+template <uint8_t AddrSize, uint8_t RefAddrSize> 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
- 8, // 0x17 DW_FORM_sec_offset
- 0, // 0x18 DW_FORM_exprloc
- 0, // 0x19 DW_FORM_flag_present
- 8, // 0x20 DW_FORM_ref_sig8
+template <uint8_t AddrSize, uint8_t RefAddrSize>
+const uint8_t FixedFormSizes<AddrSize, RefAddrSize>::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
switch (Form) {
case DW_FORM_addr:
case DW_FORM_ref_addr: {
- RelocAddrMap::const_iterator AI
- = cu->getRelocMap()->find(*offset_ptr);
+ 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<uint8_t, int64_t> &R = AI->second;
- Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize()) +
- R.second;
+ Value.uval = data.getUnsigned(offset_ptr, AddrSize) + R.second;
} else
- Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize());
+ Value.uval = data.getUnsigned(offset_ptr, AddrSize);
break;
}
case DW_FORM_exprloc:
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);
Form = data.getULEB128(offset_ptr);
indirect = true;
break;
- case DW_FORM_sec_offset:
- if (cu->getAddressByteSize() == 4)
+ 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<uint8_t, int64_t> &R = AI->second;
+ Value.uval = data.getU32(offset_ptr) + R.second;
+ } else
Value.uval = data.getU32(offset_ptr);
- else
- Value.uval = data.getU64(offset_ptr);
break;
+ }
case DW_FORM_flag_present:
Value.uval = 1;
break;
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);
+ Value.IsDWOIndex = true;
break;
default:
return false;
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
// 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:
case DW_FORM_flag:
form = debug_info_data.getULEB128(offset_ptr);
break;
- // 4 for DWARF32, 8 for DWARF64.
+ // FIXME: 4 for DWARF32, 8 for DWARF64.
case DW_FORM_sec_offset:
- if (cu->getAddressByteSize() == 4)
- *offset_ptr += 4;
- else
- *offset_ptr += 8;
+ *offset_ptr += 4;
return true;
-
+
default:
return false;
}
switch (Form) {
case DW_FORM_addr: OS << format("0x%016" PRIx64, uvalue); break;
+ case DW_FORM_GNU_addr_index: {
+ OS << format(" indexed (%8.8x) address = ", (uint32_t)uvalue);
+ uint64_t Address;
+ if (cu->getAddrOffsetSectionItem(uvalue, Address))
+ OS << format("0x%016" PRIx64, Address);
+ 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;
case DW_FORM_udata: OS << getUnsigned(); break;
case DW_FORM_strp: {
OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue);
- const char* dbg_str = getAsCString(&debug_str_data);
+ const char* dbg_str = getAsCString(cu);
if (dbg_str) {
OS << '"';
OS.write_escaped(dbg_str);
}
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);
+ const char *dbg_str = getAsCString(cu);
if (dbg_str) {
OS << '"';
OS.write_escaped(dbg_str);
OS << "DW_FORM_indirect";
break;
+ // Should be formatted to 64-bit for DWARF64.
case DW_FORM_sec_offset:
- if (cu->getAddressByteSize() == 4)
- OS << format("0x%08x", (uint32_t)uvalue);
- else
- OS << format("0x%016" PRIx64, uvalue);
+ OS << format("0x%08x", (uint32_t)uvalue);
break;
-
+
default:
OS << format("DW_FORM(0x%4.4x)", Form);
break;
}
const char*
-DWARFFormValue::getAsCString(const DataExtractor *debug_str_data_ptr) const {
- if (isInlinedCStr()) {
+DWARFFormValue::getAsCString(const DWARFCompileUnit *CU) const {
+ if (isInlinedCStr())
return Value.cstr;
- } else if (debug_str_data_ptr) {
- uint32_t offset = Value.uval;
- return debug_str_data_ptr->getCStr(&offset);
+ if (!CU)
+ return NULL;
+ uint32_t Offset = Value.uval;
+ if (Value.IsDWOIndex) {
+ uint32_t StrOffset;
+ if (!CU->getStringOffsetSectionItem(Offset, StrOffset))
+ return NULL;
+ Offset = StrOffset;
}
- return NULL;
+ return CU->getStringExtractor().getCStr(&Offset);
}
-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->getULEB128(&offset);
- return DS->getCStr(&soffset);
+uint64_t
+DWARFFormValue::getAsAddress(const DWARFCompileUnit *CU) const {
+ if (!CU)
+ return 0;
+ if (Value.IsDWOIndex) {
+ uint32_t Index = Value.uval;
+ uint64_t Address;
+ if (!CU->getAddrOffsetSectionItem(Index, Address))
+ return 0;
+ return Address;
+ }
+ return Value.uval;
}
uint64_t DWARFFormValue::getReference(const DWARFCompileUnit *cu) const {
return die_offset;
}
-bool
-DWARFFormValue::resolveCompileUnitReferences(const DWARFCompileUnit *cu) {
- switch (Form) {
- case DW_FORM_ref1:
- case DW_FORM_ref2:
- case DW_FORM_ref4:
- case DW_FORM_ref8:
- case DW_FORM_ref_udata:
- Value.uval += cu->getOffset();
- Form = DW_FORM_ref_addr;
- return true;
- default:
- break;
- }
- return false;
-}
-
const uint8_t *DWARFFormValue::BlockData() const {
if (!isInlinedCStr())
return Value.data;
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