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//===-- WasmDumper.cpp - Wasm-specific object file dumper -----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Wasm-specific dumper for llvm-readobj.
//
//===----------------------------------------------------------------------===//
#include "Error.h"
#include "ObjDumper.h"
#include "llvm/Object/Wasm.h"
#include "llvm/Support/ScopedPrinter.h"
using namespace llvm;
using namespace object;
namespace {
const char *wasmSectionTypeToString(uint32_t Type) {
#define ECase(X) \
case wasm::WASM_SEC_##X: \
return #X;
switch (Type) {
ECase(CUSTOM);
ECase(TYPE);
ECase(IMPORT);
ECase(FUNCTION);
ECase(TABLE);
ECase(MEMORY);
ECase(GLOBAL);
ECase(EXPORT);
ECase(START);
ECase(ELEM);
ECase(CODE);
ECase(DATA);
}
#undef ECase
return "";
}
class WasmDumper : public ObjDumper {
public:
WasmDumper(const WasmObjectFile *Obj, ScopedPrinter &Writer)
: ObjDumper(Writer), Obj(Obj) {}
void printFileHeaders() override {
W.printHex("Version", Obj->getHeader().Version);
}
void printSections() override {
ListScope Group(W, "Sections");
for (const SectionRef &Section : Obj->sections()) {
const wasm::WasmSection *WasmSec = Obj->getWasmSection(Section);
DictScope SectionD(W, "Section");
const char *Type = wasmSectionTypeToString(WasmSec->Type);
W.printHex("Type", Type, WasmSec->Type);
W.printNumber("Size", (uint64_t)WasmSec->Content.size());
W.printNumber("Offset", WasmSec->Offset);
if (WasmSec->Type == wasm::WASM_SEC_CUSTOM) {
W.printString("Name", WasmSec->Name);
}
}
}
void printRelocations() override { llvm_unreachable("unimplemented"); }
void printSymbols() override { llvm_unreachable("unimplemented"); }
void printDynamicSymbols() override { llvm_unreachable("unimplemented"); }
void printUnwindInfo() override { llvm_unreachable("unimplemented"); }
void printStackMap() const override { llvm_unreachable("unimplemented"); }
private:
const WasmObjectFile *Obj;
};
}
namespace llvm {
std::error_code createWasmDumper(const object::ObjectFile *Obj,
ScopedPrinter &Writer,
std::unique_ptr<ObjDumper> &Result) {
const WasmObjectFile *WasmObj = dyn_cast<WasmObjectFile>(Obj);
assert(WasmObj && "createWasmDumper called with non-wasm object");
Result.reset(new WasmDumper(WasmObj, Writer));
return readobj_error::success;
}
} // namespace llvm
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