asmjit/asmjit
Asmjit
AsmJit este un generator de cod mașină la runtime și un backend de compilator JIT care traduce definiții de nivel înalt în instrucțiuni executabile pentru procesor. Acesta oferă un API unificat de emisie a instrucțiunilor și un manager de memorie executabilă pentru a aloca și proteja pagini de memorie virtuală pe mai multe arhitecturi CPU.
Biblioteca funcționează ca un motor de asamblare pentru x86 și ARM, suportând generarea de asamblare cross-platform printr-un backend unificat. Permite crearea de cod mașină optimizat pentru diferite CPU-uri, menținând în același timp un singur codebase.
Proiectul acoperă abstracții de sistem de nivel scăzut, inclusiv alocarea registrelor, convenții de apelare specifice arhitecturii și instrumentarea binară dinamică. Acesta gestionează traducerea reprezentărilor intermediare în cod binar folosind rezoluția offset-urilor bazată pe etichete și emisia directă în buffer.
Features
- Just-In-Time Compilation - Translates high-level logic into optimized x86 and AArch64 machine code during application execution.
- Memory Protection Managers - Provides a cross-platform interface for allocating and protecting virtual memory pages for dynamic code.
- Runtime Assemblers - Implements an assembly engine that produces target-specific binary code and manages CPU register allocation.
- Instruction Emission APIs - Ships a universal interface for generating SIMD and general-purpose instructions with target-specific performance overrides.
- JIT Compiler Backends - Provides a low-latency library for generating x86 and AArch64 machine code at runtime.
- Machine Code Generation - Creates and executes processor instructions during program execution for high performance and low latency.
- Cross-Architecture Code Generators - Produces optimized machine code for multiple CPU architectures from a single unified API.
- Machine Code Generators - Translates high-level function definitions into executable processor instructions for multiple architectures.
- Dual-Mapped Memory Allocation - Implements dual-mapped memory allocation to comply with operating system security restrictions on executable pages.
- Binary Instrumentation - Enables generating and modifying executable code sequences at runtime to insert probes or optimize hot paths.
- Intermediate Representations - Uses a mutable linked-list intermediate representation to allow code reordering and modification before binary emission.
- Direct-to-Binary Emission - Writes machine instructions directly into executable memory regions to minimize latency during runtime generation.
- Calling Conventions - Provides low-level mechanisms for managing stack frames and argument passing for different processor architectures.
- Virtual Register Allocation - Maps abstract virtual registers to physical hardware registers to optimize resource use and execution speed.
- Symbolic Offset Resolution - Calculates final memory addresses for jumps and calls by resolving symbolic labels against the assembled code buffer.
- Cross-Platform Abstractions - Implements a unified interface to translate universal instructions into target-specific machine code for x86 and AArch64.
- Compiler Backends - JIT and remote assembler for C++.
- General Utilities - Low-latency machine code generation library.
