From fe93a60b005fb6ef262c7d3e35d17a90f32dd60a Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Thu, 26 Jul 2007 16:46:54 +0000
Subject: [PATCH] Allow for extrnal DllMain.

---
 crypto/cryptlib.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 59 insertions(+), 1 deletion(-)

diff --git a/crypto/cryptlib.c b/crypto/cryptlib.c
index 09f25b7077..8f9e88e403 100644
--- a/crypto/cryptlib.c
+++ b/crypto/cryptlib.c
@@ -270,7 +270,7 @@ int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
 
 #if	defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
 	defined(__INTEL__) || \
-	defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
+	defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
 
 unsigned long  OPENSSL_ia32cap_P=0;
 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
@@ -306,6 +306,62 @@ void OPENSSL_cpuid_setup(void) {}
 #endif
 
 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
+
+#ifdef OPENSSL_FIPS
+
+#include <tlhelp32.h>
+#if defined(__GNUC__) && __GNUC__>=2
+static int DllInit(void) __attribute__((constructor));
+#elif defined(_MSC_VER)
+static int DllInit(void);
+# ifdef _WIN64
+# pragma section(".CRT$XCU",read)
+  __declspec(allocate(".CRT$XCU"))
+# else
+# pragma data_seg(".CRT$XCU")
+# endif
+  static int (*p)(void) = DllInit;
+# pragma data_seg()
+#endif
+
+static int DllInit(void)
+{
+#if defined(_WIN32_WINNT)
+	union	{ int(*f)(void); BYTE *p; } t = { DllInit };
+        HANDLE	hModuleSnap = INVALID_HANDLE_VALUE;
+	IMAGE_DOS_HEADER *dos_header;
+	IMAGE_NT_HEADERS *nt_headers;
+	MODULEENTRY32 me32 = {sizeof(me32)};
+
+	hModuleSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,0);
+	if (hModuleSnap != INVALID_HANDLE_VALUE &&
+	    Module32First(hModuleSnap,&me32)) do
+		{
+		if (t.p >= me32.modBaseAddr &&
+		    t.p <  me32.modBaseAddr+me32.modBaseSize)
+			{
+			dos_header=(IMAGE_DOS_HEADER *)me32.modBaseAddr;
+			if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
+				{
+				nt_headers=(IMAGE_NT_HEADERS *)
+					((BYTE *)dos_header+dos_header->e_lfanew);
+				if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
+				    me32.modBaseAddr!=(BYTE*)nt_headers->OptionalHeader.ImageBase)
+					OPENSSL_NONPIC_relocated=1;
+				}
+			break;
+			}
+		} while (Module32Next(hModuleSnap,&me32));
+
+	if (hModuleSnap != INVALID_HANDLE_VALUE)
+		CloseHandle(hModuleSnap);
+#endif
+	OPENSSL_cpuid_setup();
+	return 0;
+}
+
+#else
+
 #ifdef __CYGWIN__
 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
 #include <windows.h>
@@ -349,6 +405,8 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
 	}
 #endif
 
+#endif
+
 #if defined(_WIN32) && !defined(__CYGWIN__)
 #include <tchar.h>
 
-- 
2.25.1