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https://github.com/c64scene-ar/llvm-6502.git
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Add support for some missing DW_FORM_*.
TODO: Fix code duplication and coding style. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162525 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
parent
08cdb6e6b2
commit
3887a902a1
@ -126,6 +126,7 @@ bool DWARFDebugInfoEntryMinimal::extractFast(const DWARFCompileUnit *cu,
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switch (form) {
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// Blocks if inlined data that have a length field and the data bytes
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// inlined in the .debug_info.
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case DW_FORM_exprloc:
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case DW_FORM_block:
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form_size = debug_info_data.getULEB128(&offset);
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break;
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@ -150,6 +151,11 @@ bool DWARFDebugInfoEntryMinimal::extractFast(const DWARFCompileUnit *cu,
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form_size = cu->getAddressByteSize();
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break;
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// 0 sized form.
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case DW_FORM_flag_present:
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form_size = 0;
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break;
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// 1 byte values
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case DW_FORM_data1:
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case DW_FORM_flag:
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@ -173,6 +179,7 @@ bool DWARFDebugInfoEntryMinimal::extractFast(const DWARFCompileUnit *cu,
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// 8 byte values
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case DW_FORM_data8:
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case DW_FORM_ref8:
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case DW_FORM_ref_sig8:
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form_size = 8;
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break;
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@ -188,6 +195,13 @@ bool DWARFDebugInfoEntryMinimal::extractFast(const DWARFCompileUnit *cu,
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form = debug_info_data.getULEB128(&offset);
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break;
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case DW_FORM_sec_offset:
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if (cu->getAddressByteSize() == 4)
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debug_info_data.getU32(offset_ptr);
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else
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debug_info_data.getU64(offset_ptr);
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break;
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default:
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*offset_ptr = Offset;
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return false;
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@ -249,6 +263,7 @@ DWARFDebugInfoEntryMinimal::extract(const DWARFCompileUnit *cu,
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switch (form) {
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// Blocks if inlined data that have a length field and the data
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// bytes // inlined in the .debug_info
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case DW_FORM_exprloc:
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case DW_FORM_block:
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form_size = debug_info_data.getULEB128(&offset);
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break;
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@ -273,6 +288,11 @@ DWARFDebugInfoEntryMinimal::extract(const DWARFCompileUnit *cu,
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form_size = cu_addr_size;
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break;
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// 0 byte value
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case DW_FORM_flag_present:
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form_size = 0;
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break;
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// 1 byte values
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case DW_FORM_data1:
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case DW_FORM_flag:
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@ -299,6 +319,7 @@ DWARFDebugInfoEntryMinimal::extract(const DWARFCompileUnit *cu,
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// 8 byte values
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case DW_FORM_data8:
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case DW_FORM_ref8:
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case DW_FORM_ref_sig8:
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form_size = 8;
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break;
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@ -314,6 +335,13 @@ DWARFDebugInfoEntryMinimal::extract(const DWARFCompileUnit *cu,
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form_is_indirect = true;
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break;
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case DW_FORM_sec_offset:
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if (cu->getAddressByteSize() == 4)
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debug_info_data.getU32(offset_ptr);
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else
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debug_info_data.getU64(offset_ptr);
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break;
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default:
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*offset_ptr = offset;
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return false;
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@ -41,6 +41,10 @@ static const uint8_t form_sizes_addr4[] = {
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8, // 0x14 DW_FORM_ref8
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0, // 0x15 DW_FORM_ref_udata
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0, // 0x16 DW_FORM_indirect
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4, // 0x17 DW_FORM_sec_offset
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0, // 0x18 DW_FORM_exprloc
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0, // 0x19 DW_FORM_flag_present
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8, // 0x20 DW_FORM_ref_sig8
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};
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static const uint8_t form_sizes_addr8[] = {
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@ -67,6 +71,10 @@ static const uint8_t form_sizes_addr8[] = {
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8, // 0x14 DW_FORM_ref8
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0, // 0x15 DW_FORM_ref_udata
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0, // 0x16 DW_FORM_indirect
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8, // 0x17 DW_FORM_sec_offset
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0, // 0x18 DW_FORM_exprloc
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0, // 0x19 DW_FORM_flag_present
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8, // 0x20 DW_FORM_ref_sig8
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};
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const uint8_t *
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@ -93,6 +101,7 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr,
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case DW_FORM_ref_addr:
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Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize());
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break;
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case DW_FORM_exprloc:
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case DW_FORM_block:
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Value.uval = data.getULEB128(offset_ptr);
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is_block = true;
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@ -147,6 +156,18 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr,
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Form = data.getULEB128(offset_ptr);
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indirect = true;
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break;
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case DW_FORM_sec_offset:
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if (cu->getAddressByteSize() == 4)
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Value.uval = data.getU32(offset_ptr);
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else
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Value.uval = data.getU64(offset_ptr);
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break;
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case DW_FORM_flag_present:
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Value.uval = 1;
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break;
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case DW_FORM_ref_sig8:
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Value.uval = data.getU64(offset_ptr);
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break;
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default:
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return false;
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}
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@ -179,6 +200,7 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data,
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switch (form) {
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// Blocks if inlined data that have a length field and the data bytes
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// inlined in the .debug_info
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case DW_FORM_exprloc:
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case DW_FORM_block: {
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uint64_t size = debug_info_data.getULEB128(offset_ptr);
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*offset_ptr += size;
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@ -211,6 +233,10 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data,
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*offset_ptr += cu->getAddressByteSize();
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return true;
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// 0 byte values - implied from the form.
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case DW_FORM_flag_present:
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return true;
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// 1 byte values
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case DW_FORM_data1:
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case DW_FORM_flag:
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@ -234,6 +260,7 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data,
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// 8 byte values
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case DW_FORM_data8:
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case DW_FORM_ref8:
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case DW_FORM_ref_sig8:
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*offset_ptr += 8;
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return true;
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@ -249,6 +276,15 @@ DWARFFormValue::skipValue(uint16_t form, DataExtractor debug_info_data,
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indirect = true;
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form = debug_info_data.getULEB128(offset_ptr);
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break;
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// 4 for DWARF32, 8 for DWARF64.
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case DW_FORM_sec_offset:
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if (cu->getAddressByteSize() == 4)
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*offset_ptr += 4;
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else
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*offset_ptr += 8;
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return true;
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default:
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return false;
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}
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@ -264,22 +300,26 @@ DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const {
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switch (Form) {
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case DW_FORM_addr: OS << format("0x%016" PRIx64, uvalue); break;
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case DW_FORM_flag_present: OS << "true"; break;
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case DW_FORM_flag:
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case DW_FORM_data1: OS << format("0x%02x", (uint8_t)uvalue); break;
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case DW_FORM_data2: OS << format("0x%04x", (uint16_t)uvalue); break;
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case DW_FORM_data4: OS << format("0x%08x", (uint32_t)uvalue); break;
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case DW_FORM_ref_sig8:
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case DW_FORM_data8: OS << format("0x%016" PRIx64, uvalue); break;
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case DW_FORM_string:
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OS << '"';
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OS.write_escaped(getAsCString(NULL));
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OS << '"';
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break;
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case DW_FORM_exprloc:
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case DW_FORM_block:
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case DW_FORM_block1:
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case DW_FORM_block2:
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case DW_FORM_block4:
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if (uvalue > 0) {
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switch (Form) {
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case DW_FORM_exprloc:
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case DW_FORM_block: OS << format("<0x%" PRIx64 "> ", uvalue); break;
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case DW_FORM_block1: OS << format("<0x%2.2x> ", (uint8_t)uvalue); break;
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case DW_FORM_block2: OS << format("<0x%4.4x> ", (uint16_t)uvalue); break;
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@ -342,6 +382,14 @@ DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const {
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case DW_FORM_indirect:
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OS << "DW_FORM_indirect";
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break;
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case DW_FORM_sec_offset:
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if (cu->getAddressByteSize() == 4)
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OS << format("0x%08x", (uint32_t)uvalue);
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else
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OS << format("0x%016" PRIx64, uvalue);
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break;
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default:
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OS << format("DW_FORM(0x%4.4x)", Form);
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break;
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@ -404,6 +452,7 @@ const uint8_t *DWARFFormValue::BlockData() const {
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bool DWARFFormValue::isBlockForm(uint16_t form) {
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switch (form) {
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case DW_FORM_exprloc:
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case DW_FORM_block:
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case DW_FORM_block1:
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case DW_FORM_block2:
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