This is probably overkill, but it's a good cause. I'm currently porting it to QEMU 2.5 because I need one new ARM NEON instruction. Exposes all of this using a simple C library / API: Adds register read/write APIs (this is actually a ton of code in the form of a switch/case table for each arch) These calls are inserted into the JIT stream only when you add a hook, so they're reasonably efficient. Adds a hook infrastructure to call callback function(s) with metadata on many different events, including memory access, memory fault, interrupt, basic block entry, instruction execution (so like per instruction address). 64-bit is backwards compatible with 32-bit programs, so you can still use qemu-system-aarch64 to run a 32-bit OS if you wish, just like on the real hardware. Since the Pi 3 and later have 64-bit CPUs, you need to use qemu-system-aarch64 instead. This allows you to compile JIT support for more than one guest architecture into the same binary, as well as run more than one instance of the JIT at once (so you can emulate two CPUs in parallel, even of different architectures). This page describes how to setup and use QEMU user emulation in a 'transparent' fashion, allowing execution of non-native target executables just like native ones (i.e./program ). qemu-system-arm only emulates 32-bit CPUs, which is why it only supports up to the Pi 2. Modifies the JIT and all supporting APIs to not use globals. You can build multi-platform images using three different strategies that are supported by Buildx and Dockerfiles: Using the QEMU emulation support in the. Removes hardware support, as well as the qemu-system and qemu-user targets. Removes a couple of architectures (because they're not supported yet for hooks/register access). Unicorn is a massive patch on top of QEMU 2.2 that approximately does the following:
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