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[DebugInfo] Dump fields in .debug_aranges according to the DWARF format (1/8). 

The patch changes dumping of unit_length and debug_info_offset fields in
an address range header so that they are printed as 16-digit hex values
if the contribution is in the DWARF64 format.

Differential Revision: https://reviews.llvm.org/D79997
This commit is contained in:
Igor Kudrin 2020-05-19 13:34:54 +07:00
parent 04e005009a
commit 69dfa07b4c
3 changed files with 18 additions and 14 deletions
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2
llvm/include/llvm/DebugInfo/DWARF/DWARFDebugArangeSet.h
View File

@ -25,6 +25,8 @@ public:
/// The total length of the entries for that set, not including the length
/// field itself.
uint64_t Length;
/// The DWARF format of the set.
dwarf::DwarfFormat Format;
/// The offset from the beginning of the .debug_info section of the
/// compilation unit entry referenced by the table.
uint64_t CuOffset;

16
llvm/lib/DebugInfo/DWARF/DWARFDebugArangeSet.cpp
View File

@ -60,12 +60,12 @@ Error DWARFDebugArangeSet::extract(DWARFDataExtractor data,
// the segment selectors are omitted from all tuples, including
// the terminating tuple.
dwarf::DwarfFormat format;
Error Err = Error::success();
std::tie(HeaderData.Length, format) = data.getInitialLength(offset_ptr, &Err);
std::tie(HeaderData.Length, HeaderData.Format) =
data.getInitialLength(offset_ptr, &Err);
HeaderData.Version = data.getU16(offset_ptr, &Err);
HeaderData.CuOffset =
data.getUnsigned(offset_ptr, dwarf::getDwarfOffsetByteSize(format), &Err);
HeaderData.CuOffset = data.getUnsigned(
offset_ptr, dwarf::getDwarfOffsetByteSize(HeaderData.Format), &Err);
HeaderData.AddrSize = data.getU8(offset_ptr, &Err);
HeaderData.SegSize = data.getU8(offset_ptr, &Err);
if (Err) {
@ -77,7 +77,7 @@ Error DWARFDebugArangeSet::extract(DWARFDataExtractor data,
// Perform basic validation of the header fields.
uint64_t full_length =
dwarf::getUnitLengthFieldByteSize(format) + HeaderData.Length;
dwarf::getUnitLengthFieldByteSize(HeaderData.Format) + HeaderData.Length;
if (!data.isValidOffsetForDataOfSize(Offset, full_length))
return createStringError(errc::invalid_argument,
"the length of address range table at offset "
@ -157,10 +157,12 @@ Error DWARFDebugArangeSet::extract(DWARFDataExtractor data,
}
void DWARFDebugArangeSet::dump(raw_ostream &OS) const {
int OffsetDumpWidth = 2 * dwarf::getDwarfOffsetByteSize(HeaderData.Format);
OS << "Address Range Header: "
<< format("length = 0x%8.8" PRIx64 ", ", HeaderData.Length)
<< format("length = 0x%0*" PRIx64 ", ", OffsetDumpWidth, HeaderData.Length)
<< format("version = 0x%4.4x, ", HeaderData.Version)
<< format("cu_offset = 0x%8.8" PRIx64 ", ", HeaderData.CuOffset)
<< format("cu_offset = 0x%0*" PRIx64 ", ", OffsetDumpWidth,
HeaderData.CuOffset)
<< format("addr_size = 0x%2.2x, ", HeaderData.AddrSize)
<< format("seg_size = 0x%2.2x\n", HeaderData.SegSize);

14
llvm/test/DebugInfo/X86/dwarfdump-debug-aranges.s
View File

@ -28,11 +28,11 @@
# CHECK: Address Range Header: length = 0x0000001c,
.L2version:
.short 2 # Version
.long 0x11223344 # Debug Info Offset
.long 0x112233 # Debug Info Offset
.byte 4 # Address Size
.byte 0 # Segment Selector Size
# CHECK-SAME: version = 0x0002,
# CHECK-SAME: cu_offset = 0x11223344,
# CHECK-SAME: cu_offset = 0x00112233,
# CHECK-SAME: addr_size = 0x04,
# CHECK-SAME: seg_size = 0x00
.space 4 # Padding
@ -48,11 +48,11 @@
# CHECK: Address Range Header: length = 0x0000002c,
.L3version:
.short 2 # Version
.long 0x22334455 # Debug Info Offset
.long 0x112233 # Debug Info Offset
.byte 8 # Address Size
.byte 0 # Segment Selector Size
# CHECK-SAME: version = 0x0002,
# CHECK-SAME: cu_offset = 0x22334455,
# CHECK-SAME: cu_offset = 0x00112233,
# CHECK-SAME: addr_size = 0x08,
# CHECK-SAME: seg_size = 0x00
.space 4 # Padding
@ -67,14 +67,14 @@
## Case 4: Check that 64-bit DWARF format is supported.
.long 0xffffffff # DWARF64 mark
.quad .L4end - .L4version # Length
# CHECK: Address Range Header: length = 0x0000001c,
# CHECK: Address Range Header: length = 0x000000000000001c,
.L4version:
.short 2 # Version
.quad 0x1234567899aabbcc # Debug Info Offset
.quad 0x123456789abc # Debug Info Offset
.byte 4 # Address Size
.byte 0 # Segment Selector Size
# CHECK-SAME: version = 0x0002,
# CHECK-SAME: cu_offset = 0x1234567899aabbcc,
# CHECK-SAME: cu_offset = 0x0000123456789abc,
# CHECK-SAME: addr_size = 0x04,
# CHECK-SAME: seg_size = 0x00
# No padding