Add some basic mingw support.

Patch by Ruben Van Boxem! 


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@148048 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 41 insertions, 9 deletions

diff --git a/test/Unit/clear_cache_test.c b/test/Unit/clear_cache_test.c
index 52672395..3507fd80 100644
--- a/test/Unit/clear_cache_test.c
+++ b/test/Unit/clear_cache_test.c
@@ -11,11 +11,20 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdint.h>
+#if defined(_WIN32)
+#include <windows.h>
+void __clear_cache(void* start, void* end)
+{
+    if (!FlushInstructionCache(GetCurrentProcess(), start, end-start))
+        exit(1);
+}
+#else
 #include <sys/mman.h>
+extern void __clear_cache(void* start, void* end);
+#endif
 
 
 
-extern void __clear_cache(void* start, void* end);
 
 typedef int (*pfunc)(void);
 
@@ -38,21 +47,29 @@ int main()
     // make executable the page containing execution_buffer 
     char* start = (char*)((uintptr_t)execution_buffer & (-4095));
     char* end = (char*)((uintptr_t)(&execution_buffer[128+4096]) & (-4095));
-    if ( mprotect(start, end-start, PROT_READ|PROT_WRITE|PROT_EXEC) != 0 )
+#if defined(_WIN32)
+    DWORD dummy_oldProt;
+    MEMORY_BASIC_INFORMATION b;
+    if (!VirtualQuery(start, &b, sizeof(b)))
+        return 1;
+    if (!VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect))
+#else
+    if (mprotect(start, end-start, PROT_READ|PROT_WRITE|PROT_EXEC) != 0)
+#endif
         return 1;
 
     // verify you can copy and execute a function
     memcpy(execution_buffer, (void *)(uintptr_t)&func1, 128);
     __clear_cache(execution_buffer, &execution_buffer[128]);
     pfunc f1 = (pfunc)(uintptr_t)execution_buffer;
-    if ( (*f1)() != 1 )
+    if ((*f1)() != 1)
         return 1;
 
     // verify you can overwrite a function with another
     memcpy(execution_buffer, (void *)(uintptr_t)&func2, 128);
     __clear_cache(execution_buffer, &execution_buffer[128]);
     pfunc f2 = (pfunc)(uintptr_t)execution_buffer;
-    if ( (*f2)() != 2 )
+    if ((*f2)() != 2)
         return 1;
 
     return 0;
diff --git a/test/Unit/enable_execute_stack_test.c b/test/Unit/enable_execute_stack_test.c
index ae4c320a..c0f67b33 100644
--- a/test/Unit/enable_execute_stack_test.c
+++ b/test/Unit/enable_execute_stack_test.c
@@ -11,12 +11,27 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdint.h>
-#include <sys/mman.h>
-
-
+#if defined(_WIN32)
+#include <windows.h>
+void __clear_cache(void* start, void* end)
+{
+    if (!FlushInstructionCache(GetCurrentProcess(), start, end-start))
+        exit(1);
+}
+void __enable_execute_stack(void *addr)
+{
+    MEMORY_BASIC_INFORMATION b;
 
+    if (!VirtualQuery(addr, &b, sizeof(b)))
+        exit(1);
+    if (!VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect))
+        exit(1);
+}
+#else
+#include <sys/mman.h>
 extern void __clear_cache(void* start, void* end);
 extern void __enable_execute_stack(void* addr);
+#endif
 
 typedef int (*pfunc)(void);
 
@@ -43,14 +58,14 @@ int main()
     memcpy(execution_buffer, (void *)(uintptr_t)&func1, 128);
     __clear_cache(execution_buffer, &execution_buffer[128]);
     pfunc f1 = (pfunc)(uintptr_t)execution_buffer;
-    if ( (*f1)() != 1 )
+    if ((*f1)() != 1)
         return 1;
 
     // verify you can overwrite a function with another
     memcpy(execution_buffer, (void *)(uintptr_t)&func2, 128);
     __clear_cache(execution_buffer, &execution_buffer[128]);
     pfunc f2 = (pfunc)(uintptr_t)execution_buffer;
-    if ( (*f2)() != 2 )
+    if ((*f2)() != 2)
         return 1;
 
     return 0;