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[WebAssembly] Added R_WASM_FUNCTION_OFFSET_I64 for use with DWARF DW_AT_low_pc

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Needed for wasm64, see discussion in https://reviews.llvm.org/D91203

Differential Revision: https://reviews.llvm.org/D91395
This commit is contained in:
Wouter van Oortmerssen
2020-11-12 15:05:05 -08:00
parent ba4efb3482
commit fcaec2bb33
10 changed files with 323 additions and 26 deletions
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lib/Object/WasmObjectFile.cpp
+8 -1
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@@ -876,6 +876,12 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) {
object_error::parse_failed);
Reloc.Addend = readVarint32(Ctx);
break;
case wasm::R_WASM_FUNCTION_OFFSET_I64:
if (!isValidFunctionSymbol(Reloc.Index))
return make_error<GenericBinaryError>("Bad relocation function index",
object_error::parse_failed);
Reloc.Addend = readVarint64(Ctx);
break;
case wasm::R_WASM_SECTION_OFFSET_I32:
if (!isValidSectionSymbol(Reloc.Index))
return make_error<GenericBinaryError>("Bad relocation section index",
@@ -903,7 +909,8 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) {
Reloc.Type == wasm::R_WASM_GLOBAL_INDEX_I32)
Size = 4;
if (Reloc.Type == wasm::R_WASM_TABLE_INDEX_I64 ||
Reloc.Type == wasm::R_WASM_MEMORY_ADDR_I64)
Reloc.Type == wasm::R_WASM_MEMORY_ADDR_I64 ||
Reloc.Type == wasm::R_WASM_FUNCTION_OFFSET_I64)
Size = 8;
if (Reloc.Offset + Size > EndOffset)
return make_error<GenericBinaryError>("Bad relocation offset",