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// 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 <asmjit/core.h>
#if defined(ASMJIT_BUILD_X86)
#include <asmjit/x86.h>
#endif
#include <stdio.h>
using namespace asmjit;
static char accessLetter(bool r, bool w) noexcept {
return r && w ? 'X' : r ? 'R' : w ? 'W' : '_';
}
static void printInfo(uint32_t arch, const BaseInst& inst, const Operand_* operands, size_t opCount) {
StringTmp<512> sb;
// Read & Write Information
// ------------------------
InstRWInfo rw;
InstAPI::queryRWInfo(arch, inst, operands, opCount, &rw);
sb.append("Instruction:\n");
sb.append(" ");
#ifndef ASMJIT_NO_LOGGING
Formatter::formatInstruction(sb, 0, nullptr, arch, inst, operands, opCount);
#else
sb.append("<Logging-Not-Available>");
#endif
sb.append("\n");
sb.append("Operands:\n");
for (uint32_t i = 0; i < rw.opCount(); i++) {
const OpRWInfo& op = rw.operand(i);
sb.appendFormat(" [%u] Op=%c Read=%016llX Write=%016llX Extend=%016llX",
i,
accessLetter(op.isRead(), op.isWrite()),
op.readByteMask(),
op.writeByteMask(),
op.extendByteMask());
if (op.isMemBaseUsed()) {
sb.appendFormat(" Base=%c", accessLetter(op.isMemBaseRead(), op.isMemBaseWrite()));
if (op.isMemBasePreModify())
sb.appendFormat(" <PRE>");
if (op.isMemBasePostModify())
sb.appendFormat(" <POST>");
}
if (op.isMemIndexUsed()) {
sb.appendFormat(" Index=%c", accessLetter(op.isMemIndexRead(), op.isMemIndexWrite()));
}
sb.append("\n");
}
if (rw.readFlags() | rw.writeFlags()) {
sb.append("Flags: \n");
struct FlagMap {
uint32_t flag;
char name[4];
};
static const FlagMap flagMap[] = {
{ x86::Status::kCF, "CF" },
{ x86::Status::kOF, "OF" },
{ x86::Status::kSF, "SF" },
{ x86::Status::kZF, "ZF" },
{ x86::Status::kAF, "AF" },
{ x86::Status::kPF, "PF" },
{ x86::Status::kDF, "DF" },
{ x86::Status::kIF, "IF" },
{ x86::Status::kAC, "AC" },
{ x86::Status::kC0, "C0" },
{ x86::Status::kC1, "C1" },
{ x86::Status::kC2, "C2" },
{ x86::Status::kC3, "C3" }
};
sb.append(" ");
for (uint32_t f = 0; f < 13; f++) {
char c = accessLetter((rw.readFlags() & flagMap[f].flag) != 0,
(rw.writeFlags() & flagMap[f].flag) != 0);
if (c != '_')
sb.appendFormat("%s=%c ", flagMap[f].name, c);
}
sb.append("\n");
}
// CPU Features
// ------------
BaseFeatures features;
InstAPI::queryFeatures(arch, inst, operands, opCount, &features);
#ifndef ASMJIT_NO_LOGGING
if (!features.empty()) {
sb.append("Features:\n");
sb.append(" ");
bool first = true;
BaseFeatures::Iterator it(features.iterator());
while (it.hasNext()) {
uint32_t featureId = uint32_t(it.next());
if (!first)
sb.append(" & ");
Formatter::formatFeature(sb, arch, featureId);
first = false;
}
sb.append("\n");
}
#endif
printf("%s\n", sb.data());
}
template<typename... Args>
static void printInfoSimple(uint32_t arch, uint32_t instId, Args&&... args) {
BaseInst inst(instId);
Operand_ opArray[] = { std::forward<Args>(args)... };
printInfo(arch, inst, opArray, sizeof...(args));
}
static void testX86Arch() {
#if defined(ASMJIT_BUILD_X86)
uint32_t arch = Environment::kArchX64;
printInfoSimple(arch,
x86::Inst::kIdAdd,
x86::eax, x86::ebx);
printInfoSimple(arch,
x86::Inst::kIdLods,
x86::eax , dword_ptr(x86::rsi));
printInfoSimple(arch,
x86::Inst::kIdPshufd,
x86::xmm0, x86::xmm1, imm(0));
printInfoSimple(arch,
x86::Inst::kIdPextrw,
x86::eax, x86::xmm1, imm(0));
printInfoSimple(arch,
x86::Inst::kIdPextrw,
x86::ptr(x86::rax), x86::xmm1, imm(0));
printInfoSimple(arch,
x86::Inst::kIdVaddpd,
x86::ymm0, x86::ymm1, x86::ymm2);
printInfoSimple(arch,
x86::Inst::kIdVaddpd,
x86::ymm0, x86::ymm30, x86::ymm31);
printInfoSimple(arch,
x86::Inst::kIdVaddpd,
x86::zmm0, x86::zmm1, x86::zmm2);
#endif
}
int main() {
printf("AsmJit Instruction Information Test\n\n");
testX86Arch();
return 0;
}
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