fix objc_msgSend.x86-32.S for win32

Author: DHowett

common.S

@@ -1,4 +1,4 @@
-#if defined(__WIN32__) || defined(__APPLE__)
+#if (defined(_WIN32) && defined(__i386__)) || defined(__APPLE__)
 #define CDECL(symbol) _##symbol
 #else
 #define CDECL(symbol) symbol

objc_msgSend.x86-32.S

@@ -54,7 +54,7 @@
 	push  %ecx                           # _cmd
 	push  %eax                           # &self
 	.cfi_def_cfa_offset 12
-	call  slowMsgLookup@PLT
+	call  CDECL(slowMsgLookup)@PLT
 	add   $8, %esp                       # restore the stack
 
 
@@ -65,8 +65,14 @@
 7:
 	popl  %ebx;
 8:
+#if __ELF__
+	# ELF can support GOT-relative addressing;
+	# PE/COFF and Mach-O need a text relocation.
 	addl  $_GLOBAL_OFFSET_TABLE_+(8b-7b), %ebx
 	leal  SmallObjectClasses@GOTOFF(%ebx), %eax
+#else
+	leal  CDECL(SmallObjectClasses), %eax
+#endif
 	mov   (%eax), %eax
 	popl  %ebx
 	jmp   1b