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Theodosius/Examples/Theodosius-Usermode/asmjit/core/emitterutils.cpp

151 lines
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4 years ago
// AsmJit - Machine code generation for C++
//
// * Official AsmJit Home Page: https://asmjit.com
// * Official Github Repository: https://github.com/asmjit/asmjit
//
// Copyright (c) 2008-2020 The AsmJit Authors
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
#include "../core/api-build_p.h"
#include "../core/assembler.h"
#include "../core/emitterutils_p.h"
#include "../core/formatter.h"
#include "../core/logger.h"
#include "../core/support.h"
ASMJIT_BEGIN_NAMESPACE
// ============================================================================
// [asmjit::EmitterUtils]
// ============================================================================
namespace EmitterUtils {
#ifndef ASMJIT_NO_LOGGING
Error formatLine(String& sb, const uint8_t* binData, size_t binSize, size_t dispSize, size_t immSize, const char* comment) noexcept {
size_t currentSize = sb.size();
size_t commentSize = comment ? Support::strLen(comment, Globals::kMaxCommentSize) : 0;
ASMJIT_ASSERT(binSize >= dispSize);
const size_t kNoBinSize = SIZE_MAX;
if ((binSize != 0 && binSize != kNoBinSize) || commentSize) {
size_t align = kMaxInstLineSize;
char sep = ';';
for (size_t i = (binSize == kNoBinSize); i < 2; i++) {
size_t begin = sb.size();
ASMJIT_PROPAGATE(sb.padEnd(align));
if (sep) {
ASMJIT_PROPAGATE(sb.append(sep));
ASMJIT_PROPAGATE(sb.append(' '));
}
// Append binary data or comment.
if (i == 0) {
ASMJIT_PROPAGATE(sb.appendHex(binData, binSize - dispSize - immSize));
ASMJIT_PROPAGATE(sb.appendChars('.', dispSize * 2));
ASMJIT_PROPAGATE(sb.appendHex(binData + binSize - immSize, immSize));
if (commentSize == 0) break;
}
else {
ASMJIT_PROPAGATE(sb.append(comment, commentSize));
}
currentSize += sb.size() - begin;
align += kMaxBinarySize;
sep = '|';
}
}
return sb.append('\n');
}
void logLabelBound(BaseAssembler* self, const Label& label) noexcept {
Logger* logger = self->logger();
StringTmp<512> sb;
size_t binSize = logger->hasFlag(FormatOptions::kFlagMachineCode) ? size_t(0) : SIZE_MAX;
sb.appendChars(' ', logger->indentation(FormatOptions::kIndentationLabel));
Formatter::formatLabel(sb, logger->flags(), self, label.id());
sb.append(':');
EmitterUtils::formatLine(sb, nullptr, binSize, 0, 0, self->_inlineComment);
logger->log(sb.data(), sb.size());
}
void logInstructionEmitted(
BaseAssembler* self,
uint32_t instId, uint32_t options, const Operand_& o0, const Operand_& o1, const Operand_& o2, const Operand_* opExt,
uint32_t relSize, uint32_t immSize, uint8_t* afterCursor) {
Logger* logger = self->logger();
ASMJIT_ASSERT(logger != nullptr);
StringTmp<256> sb;
uint32_t flags = logger->flags();
uint8_t* beforeCursor = self->bufferPtr();
intptr_t emittedSize = (intptr_t)(afterCursor - beforeCursor);
Operand_ opArray[Globals::kMaxOpCount];
EmitterUtils::opArrayFromEmitArgs(opArray, o0, o1, o2, opExt);
sb.appendChars(' ', logger->indentation(FormatOptions::kIndentationCode));
Formatter::formatInstruction(sb, flags, self, self->arch(), BaseInst(instId, options, self->extraReg()), opArray, Globals::kMaxOpCount);
if ((flags & FormatOptions::kFlagMachineCode) != 0)
EmitterUtils::formatLine(sb, self->bufferPtr(), size_t(emittedSize), relSize, immSize, self->inlineComment());
else
EmitterUtils::formatLine(sb, nullptr, SIZE_MAX, 0, 0, self->inlineComment());
logger->log(sb);
}
Error logInstructionFailed(
BaseAssembler* self,
Error err,
uint32_t instId, uint32_t options, const Operand_& o0, const Operand_& o1, const Operand_& o2, const Operand_* opExt) {
StringTmp<256> sb;
sb.append(DebugUtils::errorAsString(err));
sb.append(": ");
Operand_ opArray[Globals::kMaxOpCount];
EmitterUtils::opArrayFromEmitArgs(opArray, o0, o1, o2, opExt);
Formatter::formatInstruction(sb, 0, self, self->arch(), BaseInst(instId, options, self->extraReg()), opArray, Globals::kMaxOpCount);
if (self->inlineComment()) {
sb.append(" ; ");
sb.append(self->inlineComment());
}
self->resetInstOptions();
self->resetExtraReg();
self->resetInlineComment();
return self->reportError(err, sb.data());
}
#endif
} // {EmitterUtils}
ASMJIT_END_NAMESPACE