4 Commits

Author	SHA1	Message	Date
Andreas Kling	734f63d522	UserspaceEmulator: Add basic TLS (thread-local storage) support ... The SoftMMU now receives full X86::LogicalAddress values from SoftCPU. This allows the MMU to reroute TLS accesses to a special memory region. The ELF executable's PT_TLS header tells us how to allocate the TLS. Basically, the GS register points to a magical 4-byte area which has a pointer to the TCB (thread control block). The TCB lives in normal flat memory space and is accessed through the DS register.	2020-07-12 01:36:45 +02:00
Andreas Kling	f4ddca0a73	UserspaceEmulator: Warn in SoftMMU if accessing unknown memory	2020-07-10 20:29:44 +02:00
Andreas Kling	6f27770cea	UserspaceEmulator: Add 8/16 bit memory read/write operations	2020-07-10 20:20:27 +02:00
Andreas Kling	d5c46cf528	UserspaceEmulator: Start sketching out a SoftMMU class :^) ... This Emulator sub-object will keep track of all active memory regions and handle memory read/write operations from the CPU. A memory region is currently represented by a virtual Region object that can implement arbitrary behavior by overriding read/write ops.	2020-07-09 16:18:47 +02:00