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349a48fadd
Mostly this change adds support converting to and from YAML which will allow us to write more test cases for the WebAssembly MC and lld ports. Better support for objdump, readelf, and nm will be in followup CLs. I had to update the two wasm test binaries because they used the old style 'name' section which is no longer supported. Differential Revision: https://reviews.llvm.org/D31099 Patch by Sam Clegg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299101 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
//===-- WasmDumper.cpp - Wasm-specific object file dumper -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Wasm-specific dumper for llvm-readobj.
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//
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//===----------------------------------------------------------------------===//
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#include "Error.h"
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#include "ObjDumper.h"
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#include "llvm/Object/Wasm.h"
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#include "llvm/Support/ScopedPrinter.h"
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using namespace llvm;
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using namespace object;
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namespace {
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const char *wasmSectionTypeToString(uint32_t Type) {
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#define ECase(X) \
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case wasm::WASM_SEC_##X: \
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return #X;
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switch (Type) {
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ECase(CUSTOM);
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ECase(TYPE);
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ECase(IMPORT);
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ECase(FUNCTION);
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ECase(TABLE);
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ECase(MEMORY);
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ECase(GLOBAL);
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ECase(EXPORT);
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ECase(START);
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ECase(ELEM);
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ECase(CODE);
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ECase(DATA);
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}
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#undef ECase
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return "";
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}
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class WasmDumper : public ObjDumper {
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public:
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WasmDumper(const WasmObjectFile *Obj, ScopedPrinter &Writer)
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: ObjDumper(Writer), Obj(Obj) {}
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void printFileHeaders() override {
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W.printHex("Version", Obj->getHeader().Version);
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}
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void printSections() override {
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ListScope Group(W, "Sections");
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for (const SectionRef &Section : Obj->sections()) {
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const WasmSection &WasmSec = Obj->getWasmSection(Section);
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DictScope SectionD(W, "Section");
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const char *Type = wasmSectionTypeToString(WasmSec.Type);
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W.printHex("Type", Type, WasmSec.Type);
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W.printNumber("Size", (uint64_t)WasmSec.Content.size());
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W.printNumber("Offset", WasmSec.Offset);
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if (WasmSec.Type == wasm::WASM_SEC_CUSTOM) {
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W.printString("Name", WasmSec.Name);
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}
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}
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}
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void printRelocations() override { llvm_unreachable("unimplemented"); }
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void printSymbols() override { llvm_unreachable("unimplemented"); }
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void printDynamicSymbols() override { llvm_unreachable("unimplemented"); }
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void printUnwindInfo() override { llvm_unreachable("unimplemented"); }
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void printStackMap() const override { llvm_unreachable("unimplemented"); }
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private:
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const WasmObjectFile *Obj;
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};
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}
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namespace llvm {
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std::error_code createWasmDumper(const object::ObjectFile *Obj,
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ScopedPrinter &Writer,
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std::unique_ptr<ObjDumper> &Result) {
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const WasmObjectFile *WasmObj = dyn_cast<WasmObjectFile>(Obj);
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assert(WasmObj && "createWasmDumper called with non-wasm object");
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Result.reset(new WasmDumper(WasmObj, Writer));
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return readobj_error::success;
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}
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} // namespace llvm
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