ports: Define mp_off_t.

bare-arm/mpconfigport.h

@@ -46,6 +46,7 @@ typedef int32_t mp_int_t; // must be pointer size
 typedef uint32_t mp_uint_t; // must be pointer size
 typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size
+typedef long mp_off_t;
 
 // extra built in names to add to the global namespace
 extern const struct _mp_obj_fun_builtin_t mp_builtin_open_obj;

qemu-arm/mpconfigport.h

@@ -29,6 +29,7 @@ typedef int32_t mp_int_t; // must be pointer size
 typedef uint32_t mp_uint_t; // must be pointer size
 typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size
+typedef long mp_off_t;
 
 // extra built in names to add to the global namespace
 extern const struct _mp_obj_fun_builtin_t mp_builtin_open_obj;

teensy/mpconfigport.h

@@ -55,6 +55,7 @@ typedef int32_t mp_int_t; // must be pointer size
 typedef unsigned int mp_uint_t; // must be pointer size
 typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size
+typedef long mp_off_t;
 
 // We have inlined IRQ functions for efficiency (they are generally
 // 1 machine instruction).

unix-cpy/mpconfigport.h

@@ -48,6 +48,7 @@ typedef unsigned int mp_uint_t; // must be pointer size
 typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size
 typedef double machine_float_t;
+typedef long mp_off_t;
 
 // We need to provide a declaration/definition of alloca()
 #ifdef __FreeBSD__

windows/mpconfigport.h

@@ -92,6 +92,13 @@ typedef unsigned int mp_uint_t; // must be pointer size
 // define standard endianness macros.
 #define MP_ENDIANNESS_LITTLE (1)
 
+// Cannot include <sys/types.h>, as it may lead to symbol name clashes
+#if _FILE_OFFSET_BITS == 64 && !defined(__LP64__)
+typedef long long mp_off_t;
+#else
+typedef long mp_off_t;
+#endif
+
 typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size