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From 2e94dca0c2cedf0bdbcf8517db2f3750ba95513b Mon Sep 17 00:00:00 2001
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From: serge-sans-paille <sguelton@redhat.com>
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Date: Tue, 2 Mar 2021 14:08:02 +0100
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Subject: [PATCH 2/2] [PATCH][lldb] Support DWARF-5 DW_FORM_line_strp (used by
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GCC)
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---
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.../SymbolFile/DWARF/DWARFDebugInfoEntry.cpp | 1 +
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.../Plugins/SymbolFile/DWARF/DWARFFormValue.cpp | 73 +++++++++++-----------
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2 files changed, 39 insertions(+), 35 deletions(-)
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diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
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index 4212988..bce2529 100644
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--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
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+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
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@@ -173,6 +173,7 @@ bool DWARFDebugInfoEntry::Extract(const DWARFDataExtractor &data,
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break;
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case DW_FORM_strp:
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+ case DW_FORM_line_strp:
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case DW_FORM_sec_offset:
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data.GetU32(&offset);
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break;
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diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
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index 305f1cb..ec78c5b 100644
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--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
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+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
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@@ -150,40 +150,40 @@ struct FormSize {
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uint8_t valid:1, size:7;
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};
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static FormSize g_form_sizes[] = {
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- {0,0}, // 0x00 unused
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- {0,0}, // 0x01 DW_FORM_addr
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- {0,0}, // 0x02 unused
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- {0,0}, // 0x03 DW_FORM_block2
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- {0,0}, // 0x04 DW_FORM_block4
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- {1,2}, // 0x05 DW_FORM_data2
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- {1,4}, // 0x06 DW_FORM_data4
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- {1,8}, // 0x07 DW_FORM_data8
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- {0,0}, // 0x08 DW_FORM_string
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- {0,0}, // 0x09 DW_FORM_block
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- {0,0}, // 0x0a DW_FORM_block1
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- {1,1}, // 0x0b DW_FORM_data1
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- {1,1}, // 0x0c DW_FORM_flag
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- {0,0}, // 0x0d DW_FORM_sdata
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- {1,4}, // 0x0e DW_FORM_strp
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- {0,0}, // 0x0f DW_FORM_udata
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- {0,0}, // 0x10 DW_FORM_ref_addr (addr size for DWARF2 and earlier, 4 bytes for
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- // DWARF32, 8 bytes for DWARF32 in DWARF 3 and later
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- {1,1}, // 0x11 DW_FORM_ref1
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- {1,2}, // 0x12 DW_FORM_ref2
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- {1,4}, // 0x13 DW_FORM_ref4
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- {1,8}, // 0x14 DW_FORM_ref8
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- {0,0}, // 0x15 DW_FORM_ref_udata
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- {0,0}, // 0x16 DW_FORM_indirect
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- {1,4}, // 0x17 DW_FORM_sec_offset
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- {0,0}, // 0x18 DW_FORM_exprloc
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- {1,0}, // 0x19 DW_FORM_flag_present
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- {0,0}, // 0x1a
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- {0,0}, // 0x1b
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- {0,0}, // 0x1c
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- {0,0}, // 0x1d
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- {0,0}, // 0x1e
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- {0,0}, // 0x1f
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- {1,8}, // 0x20 DW_FORM_ref_sig8
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+ {0, 0}, // 0x00 unused
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+ {0, 0}, // 0x01 DW_FORM_addr
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+ {0, 0}, // 0x02 unused
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+ {0, 0}, // 0x03 DW_FORM_block2
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+ {0, 0}, // 0x04 DW_FORM_block4
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+ {1, 2}, // 0x05 DW_FORM_data2
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+ {1, 4}, // 0x06 DW_FORM_data4
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+ {1, 8}, // 0x07 DW_FORM_data8
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+ {0, 0}, // 0x08 DW_FORM_string
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+ {0, 0}, // 0x09 DW_FORM_block
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+ {0, 0}, // 0x0a DW_FORM_block1
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+ {1, 1}, // 0x0b DW_FORM_data1
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+ {1, 1}, // 0x0c DW_FORM_flag
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+ {0, 0}, // 0x0d DW_FORM_sdata
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+ {1, 4}, // 0x0e DW_FORM_strp
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+ {0, 0}, // 0x0f DW_FORM_udata
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+ {0, 0}, // 0x10 DW_FORM_ref_addr (addr size for DWARF2 and earlier, 4 bytes
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+ // for DWARF32, 8 bytes for DWARF32 in DWARF 3 and later
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+ {1, 1}, // 0x11 DW_FORM_ref1
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+ {1, 2}, // 0x12 DW_FORM_ref2
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+ {1, 4}, // 0x13 DW_FORM_ref4
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+ {1, 8}, // 0x14 DW_FORM_ref8
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+ {0, 0}, // 0x15 DW_FORM_ref_udata
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+ {0, 0}, // 0x16 DW_FORM_indirect
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+ {1, 4}, // 0x17 DW_FORM_sec_offset
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+ {0, 0}, // 0x18 DW_FORM_exprloc
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+ {1, 0}, // 0x19 DW_FORM_flag_present
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+ {0, 0}, // 0x1a DW_FORM_strx (ULEB128)
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+ {0, 0}, // 0x1b DW_FORM_addrx (ULEB128)
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+ {1, 4}, // 0x1c DW_FORM_ref_sup4
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+ {0, 0}, // 0x1d DW_FORM_strp_sup (4 bytes for DWARF32, 8 bytes for DWARF64)
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+ {1, 16}, // 0x1e DW_FORM_data16
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+ {1, 4}, // 0x1f DW_FORM_line_strp
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+ {1, 8}, // 0x20 DW_FORM_ref_sig8
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};
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llvm::Optional<uint8_t>
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@@ -286,6 +286,7 @@ bool DWARFFormValue::SkipValue(dw_form_t form,
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// 32 bit for DWARF 32, 64 for DWARF 64
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case DW_FORM_sec_offset:
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case DW_FORM_strp:
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+ case DW_FORM_line_strp:
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*offset_ptr += 4;
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return true;
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@@ -398,7 +399,8 @@ void DWARFFormValue::Dump(Stream &s) const {
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case DW_FORM_udata:
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s.PutULEB128(uvalue);
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break;
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- case DW_FORM_strp: {
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+ case DW_FORM_strp:
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+ case DW_FORM_line_strp: {
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const char *dbg_str = AsCString();
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if (dbg_str) {
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s.QuotedCString(dbg_str);
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@@ -606,6 +608,7 @@ bool DWARFFormValue::FormIsSupported(dw_form_t form) {
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case DW_FORM_flag:
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case DW_FORM_sdata:
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case DW_FORM_strp:
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+ case DW_FORM_line_strp:
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case DW_FORM_strx:
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case DW_FORM_strx1:
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case DW_FORM_strx2:
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--
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1.8.3.1
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