[llvm] r203523 - MultiJITTest.cpp: Tweak getPointerToNamedFunction() to be aware of also Windows x64.

[NAKAMURA Takumi]

Author: chapuni
Date: Mon Mar 10 19:34:38 2014
New Revision: 203523

URL: http://llvm.org/viewvc/llvm-project?rev=203523&view=rev
Log:
MultiJITTest.cpp: Tweak getPointerToNamedFunction() to be aware of also Windows x64.

In import thunk, jmp is:
  - On x86, 0xFF 0x25 [disp32].
  - On x64, 0xFF 0x25 [pcrel32].

See also my r144178.

Modified:
    llvm/trunk/unittests/ExecutionEngine/JIT/MultiJITTest.cpp

Modified: llvm/trunk/unittests/ExecutionEngine/JIT/MultiJITTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/ExecutionEngine/JIT/MultiJITTest.cpp?rev=203523&r1=203522&r2=203523&view=diff
==============================================================================
--- llvm/trunk/unittests/ExecutionEngine/JIT/MultiJITTest.cpp (original)
+++ llvm/trunk/unittests/ExecutionEngine/JIT/MultiJITTest.cpp Mon Mar 10 19:34:38 2014
@@ -174,6 +174,14 @@ TEST(MultiJitTest, JitPool) {
     EXPECT_TRUE(fa != 0);
     fa = *(intptr_t *)fa;       // Bound value of IAT
   }
+#elif defined(__x86_64__)
+  // getPointerToNamedFunction might be indirect jump
+  // on Win32 x64 --enable-shared.
+  // FF 25 <pcrel32>: jmp *(RIP + pointer to IAT)
+  if (sa != fa && memcmp((char *)fa, "\xFF\x25", 2) == 0) {
+    fa += *(int32_t *)(fa + 2) + 6;     // Address to IAT(RIP)
+    fa = *(intptr_t *)fa;               // Bound value of IAT
+  }
 #endif
   EXPECT_TRUE(sa == fa);
 }