#include "DWARFFormValue.h"
#include "DWARFCompileUnit.h"
+#include "DWARFContext.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
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
+ 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
};
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
+ 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
};
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;
+ switch (addr_size) {
+ case 4: return form_sizes_addr4;
+ case 8: return form_sizes_addr8;
+ }
+ return NULL;
}
bool
DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr,
- const DWARFCompileUnit* cu) {
- bool indirect = false;
- bool is_block = false;
- Value.data = NULL;
- // Read the value for the form into value and follow and DW_FORM_indirect
- // instances we run into
- do {
- indirect = false;
- switch (Form) {
- case DW_FORM_addr:
- case DW_FORM_ref_addr:
- Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize());
- break;
- case DW_FORM_block:
- Value.uval = data.getULEB128(offset_ptr);
- is_block = true;
- break;
- case DW_FORM_block1:
- Value.uval = data.getU8(offset_ptr);
- is_block = true;
- break;
- case DW_FORM_block2:
- Value.uval = data.getU16(offset_ptr);
- is_block = true;
- break;
- case DW_FORM_block4:
- Value.uval = data.getU32(offset_ptr);
- is_block = true;
- break;
- case DW_FORM_data1:
- case DW_FORM_ref1:
- case DW_FORM_flag:
- Value.uval = data.getU8(offset_ptr);
- break;
- case DW_FORM_data2:
- case DW_FORM_ref2:
- Value.uval = data.getU16(offset_ptr);
- break;
- case DW_FORM_data4:
- case DW_FORM_ref4:
- Value.uval = data.getU32(offset_ptr);
- break;
- case DW_FORM_data8:
- case DW_FORM_ref8:
- Value.uval = data.getU64(offset_ptr);
- break;
- case DW_FORM_sdata:
- Value.sval = data.getSLEB128(offset_ptr);
- break;
- case DW_FORM_strp:
- Value.uval = data.getU32(offset_ptr);
- break;
- case DW_FORM_udata:
- case DW_FORM_ref_udata:
- Value.uval = data.getULEB128(offset_ptr);
- break;
- case DW_FORM_string:
- Value.cstr = data.getCStr(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;
- break;
- case DW_FORM_indirect:
- Form = data.getULEB128(offset_ptr);
- indirect = true;
- break;
- default:
- return false;
- }
- } while (indirect);
+ const DWARFCompileUnit *cu) {
+ bool indirect = false;
+ bool is_block = false;
+ Value.data = NULL;
+ // Read the value for the form into value and follow and DW_FORM_indirect
+ // instances we run into
+ do {
+ indirect = false;
+ switch (Form) {
+ case DW_FORM_addr:
+ case DW_FORM_ref_addr:
+ Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize());
+ break;
+ case DW_FORM_block:
+ Value.uval = data.getULEB128(offset_ptr);
+ is_block = true;
+ break;
+ case DW_FORM_block1:
+ Value.uval = data.getU8(offset_ptr);
+ is_block = true;
+ break;
+ case DW_FORM_block2:
+ Value.uval = data.getU16(offset_ptr);
+ is_block = true;
+ break;
+ case DW_FORM_block4:
+ Value.uval = data.getU32(offset_ptr);
+ is_block = true;
+ break;
+ case DW_FORM_data1:
+ case DW_FORM_ref1:
+ case DW_FORM_flag:
+ Value.uval = data.getU8(offset_ptr);
+ break;
+ case DW_FORM_data2:
+ case DW_FORM_ref2:
+ Value.uval = data.getU16(offset_ptr);
+ break;
+ case DW_FORM_data4:
+ case DW_FORM_ref4:
+ Value.uval = data.getU32(offset_ptr);
+ break;
+ case DW_FORM_data8:
+ case DW_FORM_ref8:
+ Value.uval = data.getU64(offset_ptr);
+ break;
+ case DW_FORM_sdata:
+ Value.sval = data.getSLEB128(offset_ptr);
+ break;
+ case DW_FORM_strp:
+ Value.uval = data.getU32(offset_ptr);
+ break;
+ case DW_FORM_udata:
+ case DW_FORM_ref_udata:
+ Value.uval = data.getULEB128(offset_ptr);
+ break;
+ case DW_FORM_string:
+ Value.cstr = data.getCStr(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;
+ break;
+ case DW_FORM_indirect:
+ Form = data.getULEB128(offset_ptr);
+ indirect = true;
+ break;
+ default:
+ return false;
+ }
+ } while (indirect);
- if (is_block) {
- StringRef str = data.getData().substr(*offset_ptr, Value.uval);
- Value.data = NULL;
- if (!str.empty()) {
- Value.data = reinterpret_cast<const uint8_t *>(str.data());
- *offset_ptr += Value.uval;
- }
+ if (is_block) {
+ StringRef str = data.getData().substr(*offset_ptr, Value.uval);
+ Value.data = NULL;
+ if (!str.empty()) {
+ Value.data = reinterpret_cast<const uint8_t *>(str.data());
+ *offset_ptr += Value.uval;
}
+ }
- return true;
+ return true;
}
bool
DWARFFormValue::skipValue(DataExtractor debug_info_data, uint32_t* offset_ptr,
- const DWARFCompileUnit* cu) const {
- return DWARFFormValue::skipValue(Form, debug_info_data, offset_ptr, cu);
+ const DWARFCompileUnit *cu) const {
+ return DWARFFormValue::skipValue(Form, debug_info_data, offset_ptr, cu);
}
bool
}
void
-DWARFFormValue::dump(raw_ostream &OS, const DataExtractor *debug_str_data,
- const DWARFCompileUnit *cu) const {
+DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const {
+ DataExtractor debug_str_data(cu->getContext().getStringSection(), true, 0);
uint64_t uvalue = getUnsigned();
bool cu_relative_offset = false;
- switch (Form)
- {
+ switch (Form) {
case DW_FORM_addr: OS << format("0x%016x", uvalue); break;
case DW_FORM_flag:
case DW_FORM_data1: OS << format("0x%02x", uvalue); break;
case DW_FORM_sdata: OS << getSigned(); break;
case DW_FORM_udata: OS << getUnsigned(); break;
- case DW_FORM_strp:
- if (debug_str_data) {
- OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue);
- const char* dbg_str = getAsCString(debug_str_data);
- if (dbg_str) {
- OS << '"';
- OS.write_escaped(dbg_str);
- OS << '"';
- }
- } else {
- OS << format("0x%08x", uvalue);
+ case DW_FORM_strp: {
+ OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue);
+ const char* dbg_str = getAsCString(&debug_str_data);
+ if (dbg_str) {
+ OS << '"';
+ OS.write_escaped(dbg_str);
+ OS << '"';
}
break;
+ }
case DW_FORM_ref_addr:
OS << format("0x%016x", uvalue);
break;
return NULL;
}
-uint64_t
-DWARFFormValue::getReference(const DWARFCompileUnit *cu) const {
- uint64_t die_offset = Value.uval;
- switch (Form) {
- case DW_FORM_ref1:
- case DW_FORM_ref2:
- case DW_FORM_ref4:
- case DW_FORM_ref8:
- case DW_FORM_ref_udata:
- die_offset += (cu ? cu->getOffset() : 0);
- break;
- default:
- break;
- }
+uint64_t DWARFFormValue::getReference(const DWARFCompileUnit *cu) const {
+ uint64_t die_offset = Value.uval;
+ switch (Form) {
+ case DW_FORM_ref1:
+ case DW_FORM_ref2:
+ case DW_FORM_ref4:
+ case DW_FORM_ref8:
+ case DW_FORM_ref_udata:
+ die_offset += (cu ? cu->getOffset() : 0);
+ break;
+ default:
+ break;
+ }
- return die_offset;
+ 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;
+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;
- return NULL;
+ if (!isInlinedCStr())
+ return Value.data;
+ return NULL;
}
bool DWARFFormValue::isBlockForm(uint16_t form) {
- switch (form)
- {
- case DW_FORM_block:
- case DW_FORM_block1:
- case DW_FORM_block2:
- case DW_FORM_block4:
- return true;
- }
- return false;
+ switch (form) {
+ case DW_FORM_block:
+ case DW_FORM_block1:
+ case DW_FORM_block2:
+ case DW_FORM_block4:
+ return true;
+ }
+ return false;
}
bool DWARFFormValue::isDataForm(uint16_t form) {
- switch (form)
- {
- case DW_FORM_sdata:
- case DW_FORM_udata:
- case DW_FORM_data1:
- case DW_FORM_data2:
- case DW_FORM_data4:
- case DW_FORM_data8:
- return true;
- }
- return false;
+ switch (form) {
+ case DW_FORM_sdata:
+ case DW_FORM_udata:
+ case DW_FORM_data1:
+ case DW_FORM_data2:
+ case DW_FORM_data4:
+ case DW_FORM_data8:
+ return true;
+ }
+ return false;
}
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