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[WebAssembly] Allow for signed relocation addends

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Summary:
Addends are used as offsets to addresses of globals
and can be both positive and negative.  This change
prints libObject in line with the spec and the MC
layer.

Subscribers: jfb, dschuff

Differential Revision: https://reviews.llvm.org/D32507

llvm-svn: 301369
This commit is contained in:
Sam Clegg
2017-04-26 00:02:31 +00:00
parent ff49a05565
commit cc182aaaef
5 changed files with 30 additions and 15 deletions
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5
llvm/lib/Object/WasmObjectFile.cpp
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@@ -316,14 +316,15 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, const uint8_t *Ptr,
case wasm::R_WEBASSEMBLY_FUNCTION_INDEX_LEB:
case wasm::R_WEBASSEMBLY_TABLE_INDEX_SLEB:
case wasm::R_WEBASSEMBLY_TABLE_INDEX_I32:
case wasm::R_WEBASSEMBLY_TYPE_INDEX_LEB:
break;
case wasm::R_WEBASSEMBLY_GLOBAL_ADDR_LEB:
case wasm::R_WEBASSEMBLY_GLOBAL_ADDR_SLEB:
case wasm::R_WEBASSEMBLY_GLOBAL_ADDR_I32:
Reloc.Addend = readVaruint32(Ptr);
Reloc.Addend = readVarint32(Ptr);
break;
default:
return make_error<GenericBinaryError>("Bad relocation type",
return make_error<GenericBinaryError>("Bad relocation type: " + Twine(Reloc.Type),
object_error::parse_failed);
}
Section->Relocations.push_back(Reloc);