4 commits

Author	SHA1	Message	Date
Andreas Kling	6f27770cea	UserspaceEmulator: Add 8/16 bit memory read/write operations	2020-07-10 20:20:27 +02:00
Andreas Kling	d10765bec3	UserspaceEmulator: Add an initial stack and implement PUSH/POP reg32 ... Programs now start out with a 64 KB stack at 0x10000000. :^)	2020-07-09 16:20:08 +02:00
Andreas Kling	d0dbf92c8d	UserspaceEmulator: Break out of emulation when hitting a RET ... Until we learn more instructions, we'll have to exit somewhere, so let us exit when we hit a RET instruction for now.	2020-07-07 22:44:58 +02:00
Andreas Kling	8d8bb07476	UserspaceEmulator: Start building a userspace X86 emulator :^) ... This introduces a new X86 CPU emulator for running SerenityOS userspace programs in a virtualized interpreter environment. The main goal is to be able to instrument memory accesses and catch interesting bugs that are very hard to find otherwise. But before we can do fancy things like that, we have to build a competent emulator able to actually run programs. This initial version is able to run a very small program that makes some tiny syscalls, but nothing more.	2020-07-07 22:44:58 +02:00