Ben Wiederhake 292871c4bc UserspaceEmulator: Handle MAP_FIXED with invalid addresses better ...

Old behavior: Crash due to VERIFY, unless we're completely and entirely out of
memory (m_available_ranges being empty), in which case it would return -ENOMEM.

New behavior: Return ENOMEM (and don't crash). In the case of nullptr,
also emit a helpful diagnostic.

Note that MAP_FIXED with nullptr is technically okay, but tends to be a sign
that something went wrong.

Also, this should improve mmap performance marginally, as it pulls the check out
of a loop that does not modify any parts of the check.

UE is now self-hosting! Fixes #5709.

However, this still needs some love: "ue UserspaceEmulator true" spits out tons
of error messages, probably false-positives, and takes about 229 seconds to run.
Then again, true-in-ue-in-ue-in-Qemu is three levels of emulation, so no wonder
it takes a long time! :D

2021-03-11 08:54:54 +01:00

..

CMakeLists.txt

UserspaceEmulator: Split large file into logical pieces

2021-03-11 08:54:54 +01:00

Emulator_syscalls.cpp

UserspaceEmulator: Handle MAP_FIXED with invalid addresses better

2021-03-11 08:54:54 +01:00

Emulator.cpp

UserspaceEmulator: Split large file into logical pieces

2021-03-11 08:54:54 +01:00

Emulator.h

UserspaceEmulator: Implement set_process_name syscall

2021-03-11 08:54:54 +01:00

main.cpp

UserspaceEmulator: Improve error message for typos

2021-01-23 16:47:09 +01:00

MallocTracer.cpp

UserspaceEmulator: Remove debug spam about tracked malloc blocks

2021-03-10 15:21:26 +01:00

MallocTracer.h

UserspaceEmulator: Don't assume entire malloc block is chunked

2021-03-09 13:29:41 +01:00

MmapRegion.cpp

UserspaceEmulator: Do not pass MAP_FIXED to Kernel

2021-03-11 08:54:54 +01:00

MmapRegion.h

UserspaceEmulator: Add fast-path for is<MmapRegion>()

2021-03-09 15:17:15 +01:00

Range.cpp

UserspaceEmulator: Enable splitting regions at arbitrary points

2021-03-08 22:57:36 +01:00

Range.h

UserspaceEmulator: Enable splitting regions at arbitrary points

2021-03-08 22:57:36 +01:00

RangeAllocator.cpp

UserspaceEmulator: Handle MAP_FIXED with invalid addresses better

2021-03-11 08:54:54 +01:00

RangeAllocator.h

UserspaceEmulator: Implement a proper VM allocator

2021-02-06 23:15:44 +01:00

Region.cpp

UserspaceEmulator: Add fast-path for is<MmapRegion>()

2021-03-09 15:17:15 +01:00

Region.h

UserspaceEmulator: Add fast-path for is<MmapRegion>()

2021-03-09 15:17:15 +01:00

Report.h

UserspaceEmulator: Use vdbgln() instead of dbgln() when reporting

2021-02-08 18:08:55 +01:00

SimpleRegion.cpp

Everywhere: Rename ASSERT => VERIFY

2021-02-23 20:56:54 +01:00

SimpleRegion.h

DevTools: Move to Userland/DevTools/

2021-01-12 12:18:55 +01:00

SoftCPU.cpp

UserspaceEmulator+LibX86: Sprinkle some [[unlikely]] and ALWAYS_INLINE

2021-03-09 15:10:08 +01:00

SoftCPU.h

UserspaceEmulator+LibC: Use sys$emuctl() to pass malloc info to UE

2021-03-09 11:31:18 +01:00

SoftMMU.cpp

UserspaceEmulator: Keep the MMU regions list sorted

2021-03-09 11:31:18 +01:00

SoftMMU.h

UserspaceEmulator: Support munmap/mprotect with partial mappings

2021-03-08 22:57:36 +01:00

ValueWithShadow.h

DevTools: Move to Userland/DevTools/

2021-01-12 12:18:55 +01:00