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 wasm::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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