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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file implements the DXContainer-specific dumper for llvm-objdump.
///
//===----------------------------------------------------------------------===//
#include "llvm-objdump.h"
#include "llvm/BinaryFormat/DXContainer.h"
#include "llvm/Object/DXContainer.h"
#include "llvm/Support/ScopedPrinter.h"
using namespace llvm;
using namespace llvm::object;
static llvm::SmallString<4> maskToString(uint8_t Mask,
bool StripTrailing = false) {
llvm::SmallString<4> Result(" ");
if (Mask & 1)
Result[0] = 'x';
if (Mask & 2)
Result[1] = 'y';
if (Mask & 4)
Result[2] = 'z';
if (Mask & 8)
Result[3] = 'w';
if (!StripTrailing)
return Result;
int Size = 8 - countl_zero(Mask);
return Result.slice(0, Size);
}
static void printColumnHeader(raw_ostream &OS, size_t Length) {
for (size_t I = 0; I < Length; ++I)
OS << "-";
}
static void printColumnHeaders(raw_ostream &OS, ArrayRef<size_t> Lengths) {
// Generate the header in a temporary to avoid trailing whitespace.
SmallString<256> Str;
raw_svector_ostream Tmp(Str);
for (auto L : Lengths) {
printColumnHeader(Tmp, L);
Tmp << " ";
}
Str.back() = '\n';
OS << Str;
}
static size_t digitsForNumber(size_t N) {
if (N == 0)
return 1;
return static_cast<size_t>(log10(static_cast<double>(N))) + 1;
}
namespace {
class DXContainerDumper : public objdump::Dumper {
const DXContainerObjectFile &Obj;
public:
DXContainerDumper(const DXContainerObjectFile &O)
: objdump::Dumper(O), Obj(O) {}
void printPrivateHeaders() override;
void printSignature(const DirectX::Signature &S);
};
void DXContainerDumper::printSignature(const DirectX::Signature &S) {
// DXC prints a table like this as part of the shader disassembly:
//; Name Index Mask Register SysValue Format Used
//; -------------------- ----- ------ -------- -------- ------- ------
//; NORMAL 0 xyz 0 NONE float xyz
//; TEXCOORD 0 xy 1 NONE float xy
// DXC's implementation doesn't scale columns entirely completely for the
// provided input, so this implementation is a bit more complicated in
// formatting logic to scale with the size of the printed text.
// DXC gives names 21 characters for some unknown reason, I arbitrarily chose
// to start at 24 so that we're not going shorter but are using a round
// number.
size_t LongestName = 24;
size_t LongestSV = 10;
size_t LongestIndex = strlen("Index");
size_t LongestRegister = strlen("Register");
size_t LongestFormat = strlen("Format");
const size_t MaskWidth = 5;
// Compute the column widths. Skip calculating the "Mask" and "Used" columns
// since they both have widths of 4.
for (auto El : S) {
LongestName = std::max(LongestName, S.getName(El.NameOffset).size());
LongestSV = std::max(
LongestSV,
enumToStringRef(El.SystemValue, dxbc::getD3DSystemValues()).size());
LongestIndex = std::max(LongestIndex, digitsForNumber(El.Index));
LongestRegister = std::max(LongestRegister, digitsForNumber(El.Register));
LongestFormat = std::max(
LongestFormat,
enumToStringRef(El.CompType, dxbc::getSigComponentTypes()).size());
}
// Print Column headers.
OS << "; ";
OS << left_justify("Name", LongestName) << " ";
OS << right_justify("Index", LongestIndex) << " ";
OS << right_justify("Mask", MaskWidth) << " ";
OS << right_justify("Register", LongestRegister) << " ";
OS << right_justify("SysValue", LongestSV) << " ";
OS << right_justify("Format", LongestFormat) << " ";
OS << right_justify("Used", MaskWidth) << "\n";
OS << "; ";
printColumnHeaders(OS, {LongestName, LongestIndex, MaskWidth, LongestRegister,
LongestSV, LongestFormat, MaskWidth});
for (auto El : S) {
OS << "; " << left_justify(S.getName(El.NameOffset), LongestName) << " ";
OS << right_justify(std::to_string(El.Index), LongestIndex) << " ";
OS << right_justify(maskToString(El.Mask), MaskWidth) << " ";
OS << right_justify(std::to_string(El.Register), LongestRegister) << " ";
OS << right_justify(
enumToStringRef(El.SystemValue, dxbc::getD3DSystemValues()),
LongestSV)
<< " ";
OS << right_justify(
enumToStringRef(El.CompType, dxbc::getSigComponentTypes()),
LongestFormat);
if (El.ExclusiveMask)
OS << " " << maskToString(El.ExclusiveMask, true);
OS << "\n";
}
}
void DXContainerDumper::printPrivateHeaders() {
const DXContainer &C =
cast<object::DXContainerObjectFile>(Obj).getDXContainer();
if (!C.getInputSignature().isEmpty()) {
OS << "; Input signature:\n;\n";
printSignature(C.getInputSignature());
OS << ";\n";
}
if (!C.getOutputSignature().isEmpty()) {
OS << "; Output signature:\n;\n";
printSignature(C.getOutputSignature());
OS << ";\n";
}
if (!C.getPatchConstantSignature().isEmpty()) {
OS << "; Patch Constant signature:\n;\n";
printSignature(C.getPatchConstantSignature());
OS << ";\n";
}
}
} // namespace
std::unique_ptr<objdump::Dumper> llvm::objdump::createDXContainerDumper(
const object::DXContainerObjectFile &Obj) {
return std::make_unique<DXContainerDumper>(Obj);
}
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