rt: Move RED_ZONE_SIZE to rust_task.cpp

Author: brson

src/rt/rust_internal.h

@@ -94,15 +94,6 @@ static size_t const BUF_BYTES = 2048;
 // The error status to use when the process fails
 #define PROC_FAIL_CODE 101;
 
-// FIXME: We want this to be 128 but need to slim the red zone calls down
-#ifdef __i386__
-#define RED_ZONE_SIZE 2048
-#endif
-
-#ifdef __x86_64__
-#define RED_ZONE_SIZE 2048
-#endif
-
 // Every reference counted object should use this macro and initialize
 // ref_count.
 

src/rt/rust_task.cpp

@@ -14,6 +14,16 @@
 
 #include "globals.h"
 
+// The amount of extra space at the end of each stack segment, available
+// to the rt, compiler and dynamic linker for running small functions
+// FIXME: We want this to be 128 but need to slim the red zone calls down
+#ifdef __i386__
+#define RED_ZONE_SIZE 2048
+#endif
+
+#ifdef __x86_64__
+#define RED_ZONE_SIZE 2048
+#endif
 
 // Stack size
 size_t g_custom_min_stack_size = 0;