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llvm-dwarfdump: Add support for DW_RLE_startx_endx
This commit is contained in:
David Blaikie
parent
7a99e30464
commit
bb57d88283
@ -37,12 +37,9 @@ Error RangeListEntry::extract(DWARFDataExtractor Data, uint64_t *OffsetPtr) {
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break;
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}
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case dwarf::DW_RLE_startx_endx:
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consumeError(C.takeError());
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return createStringError(
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errc::not_supported,
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"unsupported rnglists encoding DW_RLE_startx_endx at "
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"offset 0x%" PRIx64,
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Offset);
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Value0 = Data.getULEB128(C);
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Value1 = Data.getULEB128(C);
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break;
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case dwarf::DW_RLE_startx_length: {
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Value0 = Data.getULEB128(C);
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Value1 = Data.getULEB128(C);
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@ -150,6 +147,19 @@ DWARFAddressRangesVector DWARFDebugRnglist::getAbsoluteRanges(
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E.HighPC = E.LowPC + RLE.Value1;
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break;
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}
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case dwarf::DW_RLE_startx_endx: {
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auto Start = LookupPooledAddress(RLE.Value0);
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if (!Start)
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Start = {0, -1ULL};
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auto End = LookupPooledAddress(RLE.Value1);
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if (!End)
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End = {0, -1ULL};
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// FIXME: Some error handling if Start.SectionIndex != End.SectionIndex
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E.SectionIndex = Start->SectionIndex;
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E.LowPC = Start->Address;
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E.HighPC = End->Address;
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break;
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}
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default:
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// Unsupported encodings should have been reported during extraction,
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// so we should not run into any here.
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@ -235,6 +245,17 @@ void RangeListEntry::dump(
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DWARFAddressRange(Start, Start + Value1).dump(OS, AddrSize, DumpOpts);
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break;
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}
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case dwarf::DW_RLE_startx_endx: {
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PrintRawEntry(OS, *this, AddrSize, DumpOpts);
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uint64_t Start = 0;
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if (auto SA = LookupPooledAddress(Value0))
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Start = SA->Address;
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uint64_t End = 0;
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if (auto SA = LookupPooledAddress(Value1))
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End = SA->Address;
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DWARFAddressRange(Start, End).dump(OS, AddrSize, DumpOpts);
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break;
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}
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default:
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llvm_unreachable("Unsupported range list encoding");
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}
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@ -1,8 +1,8 @@
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# RUN: llvm-mc %s -filetype obj -triple x86_64-pc-linux -o %t.o
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# RUN: not llvm-dwarfdump --debug-rnglists %t.o 2> %t.err | FileCheck %s --check-prefixes=TERSE,BOTH
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# RUN: FileCheck %s --input-file %t.err --check-prefix=ERR
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# RUN: not llvm-dwarfdump -v --debug-rnglists %t.o 2> %t.err | FileCheck %s --check-prefixes=VERBOSE,BOTH
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# RUN: FileCheck %s --input-file %t.err --check-prefix=ERR
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# RUN: llvm-dwarfdump --debug-rnglists %t.o 2> %t.err | FileCheck %s --check-prefixes=TERSE,BOTH
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# RUN: FileCheck %s --allow-empty --input-file %t.err --check-prefix=ERR
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# RUN: llvm-dwarfdump -v --debug-rnglists %t.o 2> %t.err | FileCheck %s --check-prefixes=VERBOSE,BOTH
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# RUN: FileCheck %s --allow-empty --input-file %t.err --check-prefix=ERR
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# BOTH: .debug_rnglists contents:
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# TERSE-NEXT: range list header: length = 0x00000037, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
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@ -74,6 +74,18 @@
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# VERBOSE-NEXT: 0x{{[0-9a-f]*}}:
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# VERBOSE-SAME: range list header: length = 0x0000000c, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
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# BOTH-NEXT: ranges:
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# TERSE-NEXT: [0x0000000000000000, 0x0000000000000000)
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# TERSE-NEXT: <End of list>
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# VERBOSE-NEXT: 0x00000091: [DW_RLE_startx_endx]: 0x0000000000000001, 0x000000000000000a => [0x0000000000000000, 0x0000000000000000)
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# VERBOSE-NEXT: 0x00000094: [DW_RLE_end_of_list]
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# TERSE-NEXT: range list header: length = 0x0000000c, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
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# VERBOSE-NEXT: 0x{{[0-9a-f]*}}:
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# VERBOSE-SAME: range list header: length = 0x0000000c, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
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# BOTH-NEXT: ranges:
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# TERSE-NEXT: [0x0000000000000000, 0x000000000000002a)
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# TERSE-NEXT: <End of list>
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@ -110,8 +122,6 @@
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# BOTH-NOT: range list header:
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# ERR-NOT: error:
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# ERR: error: unsupported rnglists encoding DW_RLE_startx_endx at offset 0x91
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# ERR-NOT: error:
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.section .debug_rnglists,"",@progbits
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@ -24,6 +24,7 @@
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# CHECK-NEXT: [0x00000042, 0x00000048)
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# CHECK-NEXT: [0x00000042, 0x00000048)
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# CHECK-NEXT: [0x00000042, 0x00000048)
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# CHECK-NEXT: [0x00000042, 0x00000042)
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# CHECK-NEXT: [0x00000042, 0x00000048)
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# CHECK-NEXT: [0x00000042, 0x00000048))
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# CHECK: DW_TAG_subprogram
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@ -48,10 +49,11 @@
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# entire rnglists contribution (since there's no way to know where such a
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# contribution starts) - rather than assuming one starts at 0.
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# CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000057)
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# CHECK: DW_AT_ranges
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# [0x0000000000000042, 0x0000000000000048)
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# [0x0000000000000042, 0x0000000000000048)
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# [0x0000000000000042, 0x0000000000000048)
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# [0x0000000000000042, 0x0000000000000042)
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# [0x0000000000000042, 0x0000000000000048)
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# [0x0000000000000042, 0x0000000000000048))
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# CHECK: DW_TAG_subprogram
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@ -127,6 +129,8 @@
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# CHECK-NEXT: [DW_RLE_startx_length]: 0x00000001, 0x00000006
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# CHECK-NEXT: [DW_RLE_start_end ]: [0xffffffff, 0xffffffff)
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# CHECK-NEXT: [DW_RLE_start_end ]: [0x00000042, 0x00000048)
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# CHECK-NEXT: [DW_RLE_startx_endx ]: 0x00000000, 0x00000000
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# CHECK-NEXT: [DW_RLE_startx_endx ]: 0x00000001, 0x00000001
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# CHECK-NEXT: [DW_RLE_base_address ]: 0x00000040
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# CHECK-NEXT: [DW_RLE_offset_pair ]: 0x00000002, 0x00000008 => [0x00000042, 0x00000048)
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# CHECK-NEXT: [DW_RLE_base_address ]: 0xffffffff
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@ -146,6 +150,8 @@
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# CHECK-NEXT: [DW_RLE_startx_length]: 0x0000000000000001, 0x0000000000000006
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# CHECK-NEXT: [DW_RLE_start_end ]: [0xffffffffffffffff, 0xffffffffffffffff)
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# CHECK-NEXT: [DW_RLE_start_end ]: [0x0000000000000042, 0x0000000000000048)
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# CHECK-NEXT: [DW_RLE_startx_endx ]: 0x0000000000000000, 0x0000000000000000
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# CHECK-NEXT: [DW_RLE_startx_endx ]: 0x0000000000000001, 0x0000000000000001
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# CHECK-NEXT: [DW_RLE_base_address ]: 0x0000000000000040
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# CHECK-NEXT: [DW_RLE_offset_pair ]: 0x0000000000000002, 0x0000000000000008 => [0x0000000000000042, 0x0000000000000048)
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# CHECK-NEXT: [DW_RLE_base_address ]: 0xffffffffffffffff
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@ -304,13 +310,12 @@
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.byte 6 # DW_RLE_start_end
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.long 0x42 # start address
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.long 0x48 # length
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# FIXME: RLE_startx_endx unsupported by llvm-dwarfdump
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# .byte 2 # DW_RLE_startx_endx
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# .uleb128 0 # start address
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# .uleb128 0 # length
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# .byte 2 # DW_RLE_startx_endx
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# .uleb128 1 # start address
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# .uleb128 1 # length
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.byte 2 # DW_RLE_startx_endx
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.uleb128 0 # start index
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.uleb128 0 # end index
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.byte 2 # DW_RLE_startx_endx
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.uleb128 1 # start index
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.uleb128 1 # end index
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.byte 5 # DW_RLE_base_address
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.long 0x40 # address
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.byte 4 # DW_RLE_offset_pair
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@ -358,13 +363,12 @@
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.byte 6 # DW_RLE_start_end
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.quad 0x42 # start address
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.quad 0x48 # length
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# FIXME: RLE_startx_endx unsupported by llvm-dwarfdump
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# .byte 2 # DW_RLE_startx_endx
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# .uleb128 0 # start address
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# .uleb128 0 # length
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# .byte 2 # DW_RLE_startx_endx
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# .uleb128 1 # start address
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# .uleb128 1 # length
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.byte 2 # DW_RLE_startx_endx
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.uleb128 0 # start index
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.uleb128 0 # end index
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.byte 2 # DW_RLE_startx_endx
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.uleb128 1 # start index
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.uleb128 1 # end index
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.byte 5 # DW_RLE_base_address
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.quad 0x40 # address
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.byte 4 # DW_RLE_offset_pair
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