[ASan][Windows] Interception fix for 'mov al, byte ptr []' sequences

[zacklj89]

No description provided.

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Zack Johnson (zacklj89)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/72531.diff

1 Files Affected:

• (modified) compiler-rt/lib/interception/interception_win.cpp (+1)

diff --git a/compiler-rt/lib/interception/interception_win.cpp b/compiler-rt/lib/interception/interception_win.cpp
index 1b681ada37b170d..ffde89693b0acc6 100644
--- a/compiler-rt/lib/interception/interception_win.cpp
+++ b/compiler-rt/lib/interception/interception_win.cpp
@@ -577,6 +577,7 @@ static size_t GetInstructionSize(uptr address, size_t* rel_offset = nullptr) {
     case 0x018a:  // mov al, byte ptr [rcx]
       return 2;
 
+    case 0x058A:  // 8A 05 XX XX XX XX : mov al, byte ptr [XX XX XX XX]
     case 0x058B:  // 8B 05 XX XX XX XX : mov eax, dword ptr [XX XX XX XX]
       if (rel_offset)
         *rel_offset = 2;