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TitanEngine
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468 Commits

Author SHA1 Message Date
Duncan Ogilvie fc5da46322
Merge pull request #34 from x64dbg/per-thread-stepping 
Per-thread stepping state + fix hardware-breakpoint reset race on thread exit
 2026-07-16 13:23:00 +02:00
Duncan Ogilvie ed4bdd1a01 Address review: preserve other hardware breakpoints and per-thread step state on thread exit 
Two fixes from PR review of the thread-exit reset-recovery:

- When restoring the hardware breakpoint after the stepped-over thread exits, rebuild
  each still-suspended thread's debug registers from the authoritative DebugRegister[]
  table (re-arming every enabled slot, as CREATE_THREAD does) instead of from the
  exiting thread's now-gone context. The old code rebuilt DR7 from GetContextData()
  (the dead thread), writing a DR7 with only the restored slot to every thread and
  silently disabling any other hardware breakpoint. The restore is also moved before
  the threads are resumed, since SetThreadContext does not reliably update the debug
  registers of a running thread.

- Erase the per-thread single-step state in the EXIT_THREAD handler. A thread can exit
  after StepInto() armed its step but before the trap event arrives; leaving the entry
  behind means a reused thread id inherits it (StepInto declines to arm, or a later
  single-step fires the dead thread's callback).
 2026-07-16 02:28:39 +02:00
Duncan Ogilvie ba2a3aa7c8 Complete orphaned breakpoint step-over reset when the stepped thread exits 
If a thread is terminated (e.g. by ExitProcess) while it is in the middle of a
breakpoint step-over - its breakpoint temporarily removed and a restore pending on
its next single-step - the EXIT_THREAD handler cleared ThreadBeingProcessed but left
the reset state (ResetBPX/ResetHwBPX/ResetMemBPX) armed and the breakpoint removed.
The next thread's event then consumed that orphaned reset and was misinterpreted as a
step-over reset, producing a stray single-step that was passed to the debuggee
unhandled and crashed it. This was most visible with hardware breakpoints under
multi-thread contention. Complete the pending restore when the thread-being-processed
exits.
 2026-07-15 20:11:37 +02:00
Duncan Ogilvie e80b959150 Keep per-thread stepping state 
Closes #21
Closes #20
 2026-07-15 16:02:34 +02:00
Duncan Ogilvie ec7a8b9352 Code formatting 2026-04-13 11:41:19 +02:00
Duncan Ogilvie 7a114df3d5 Honor no-console mode for debuggee launch 2026-04-13 11:22:28 +02:00
Duncan Ogilvie a62925db7a Make everything standards-compliant 2026-04-12 17:38:04 +02:00
Duncan Ogilvie 4cdefb80c6 Add CMake project 2026-04-12 15:11:17 +02:00
Duncan Ogilvie 95f332cacd Vendor distorm and scylla_wrapper 2026-04-12 13:49:25 +02:00
Duncan Ogilvie 1232bce7f6
Merge pull request #30 from rafaelrfreitas/fix-writeonly-mem-bps 
fix: ensure write-only breakpoints trigger on Copy-on-Write pages
 2026-03-28 14:35:33 +01:00
Rafael ebdc74d23b fix: ensure write-only breakpoints trigger on Copy-on-Write pages 
- Replaced the implicit bit-shift logic with an explicit mapping
to prevent the OS from silently duplicating pages via Copy-on-Write.

- Added explicit cases for PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
 2026-03-28 12:03:17 +00:00
Duncan Ogilvie e6570203cc
Merge pull request #29 from 3rdit/fix/breakpoint-deletion-race 
Fix multi-thread breakpoint deletion race condition
 2026-01-10 14:49:38 +01:00
AzuLX 5cc80cf3d9
track deleted breakpoints to handle stale events safely 2026-01-10 12:36:40 +00:00
AzuLX 8072f96a26
fix multi-thread breakpoint deletion race condition 2026-01-05 15:47:03 +00:00
Duncan Ogilvie f6c9698fd7
Merge pull request #28 from 3rdit/fix/hwbp-thread-suspension 
Fix thread suspension when hardware breakpoint is disabled during callback
 2026-01-04 23:42:29 +01:00
AzuLX b4a11cb2df
prevent thread suspension when HWBP is disabled during callback 2026-01-04 21:01:42 +00:00
Duncan Ogilvie ea05d920b7 Fix formatting 2025-08-18 03:29:50 +02:00
Duncan Ogilvie 3db7179373
Merge pull request #26 from micronn/fix-membpx-pageboundary 
Fix memory breakpoints when an access spans an extra page
 2025-08-17 20:28:06 +02:00
Duncan Ogilvie 2d1dcd7e1c
Merge pull request #27 from CXVUSER/x64dbg 
Fix legacy SSE not working on pre-AVX processors
 2025-08-17 20:27:48 +02:00
xcv c7c6956698 Fix legacy SSE not working on pre-AVX processors 2025-08-17 21:56:41 +05:00
micronn 12f896c57e
Fix memory breakpoints when an access spans an extra page 2025-07-05 21:17:19 +02:00
Duncan Ogilvie 158ab56643 Prepare for release 2025-07-04 17:20:04 +02:00
Duncan Ogilvie 02d0be742a Fix crash with AVX-512 on 32-bit 
Closes #25
 2025-07-04 17:17:01 +02:00
Duncan Ogilvie f23d23a5f5
Merge pull request #23 from torusrxxx/AVX512 
Fix clearing wrong structure
 2025-05-24 18:30:41 +02:00
torusrxxx ded0912814 Fix clearing wrong structure 2025-03-31 11:14:47 +08:00
Duncan Ogilvie 2674540368
Merge pull request #22 from torusrxxx/AVX512 
Add support for AVX512
 2025-03-30 12:44:51 +02:00
torusrxxx 1aae30c447 allow using k0 register 2025-03-19 00:23:10 +08:00
torusrxxx c37f9978fb Add support for AVX512 2025-03-11 19:01:16 +08:00
Duncan Ogilvie 49f59781da
Merge pull request #16 from shocoman/memory-read-safe-page-bug 
Fix 'MemoryReadSafe' not restoring original memory protection correctly
 2023-10-28 15:18:43 +02:00
Duncan Ogilvie 5484a49237
Merge pull request #18 from shocoman/proper-membp-3-public 
Implement memory breakpoints that are not page-aligned
 2023-10-28 15:18:23 +02:00
shocoman 4bac132514 Fix 'MemoryReadSafe' not restoring original memory protection correctly 2023-10-20 20:57:14 +07:00
Duncan Ogilvie a19a7935de
Merge pull request #15 from ZehMatt/fix-stepping-state 
Fix the stepping issue
 2023-10-20 14:30:34 +02:00
shocoman 76c1b86250 Implement memory breakpoints that are not page-aligned 2023-10-20 17:48:29 +07:00
ζeh Matt 40395549f9
Reset single stepping state when debugger pauses on exceptions 2023-09-06 23:22:22 +03:00
Duncan Ogilvie 01d0d1854f Remove unnecessary FlushInstructionCache 2023-07-08 13:20:30 +02:00
Duncan Ogilvie 490ce02fb3 Also implement #14 for UD2 breakpoints 2023-07-08 12:50:02 +02:00
Duncan Ogilvie b862c2b36f
Merge pull request #14 from shocoman/fix-double-pushfd-bug 
Fix a bug that could change a stack value after stepping into a PUSHF instruction with a singleshoot breakpoint
 2023-07-08 12:02:41 +02:00
shocoman 7a7530cef1 Fix a bug that can change a stack value after stepping into a PUSHF instruction with a singleshoot breakpoint 2023-06-04 14:27:25 +07:00
Duncan Ogilvie 882bc1bc30 Delete a bunch of unused functionality 2023-03-04 01:38:22 +01:00
Duncan Ogilvie 568334cdd4 Switch to the v141_xp toolset for XP support 2022-10-07 12:19:13 +02:00
Duncan Ogilvie e005ba44b6 Relocate the image with No ASLR 2022-09-11 15:52:18 +02:00
Duncan Ogilvie 259f1e88e3 Improve no ASLR by retrying 2022-09-10 01:13:09 +02:00
Duncan Ogilvie d0b7e5addd Remove a redundant GetThreadContext for synchronized breakpoints 2022-09-09 22:38:16 +02:00
Duncan Ogilvie 8d833fb2e3 Add UE_ENGINE_SAFE_STEP to allow disabling DBG_REPLY_LATER 2022-09-09 13:45:53 +02:00
Duncan Ogilvie 43caf023f8 Remove unused SDKs 2022-09-09 13:44:12 +02:00
Duncan Ogilvie 160d66919e Workaround for a bug in the kernel with x64 emulation on ARM 2022-08-10 18:49:36 +02:00
Duncan Ogilvie fb1babcbb3 Put a critical section around StepInto to make it thread-safe 2021-12-11 23:43:22 +01:00
Duncan Ogilvie 1a76d61ef6 GitHub Actions to build 2021-11-15 03:04:33 +01:00
Duncan Ogilvie fa8c5f7eb5 Upgrade to Visual Studio 2019 2021-11-15 02:58:38 +01:00
Duncan Ogilvie f0832465c6 AStyle formatting 2021-11-15 02:57:37 +01:00