5
Last change
on this file since 7ee6437 was
b2de426,
checked in by Sebastian Huber <sebastian.huber@…>, on 08/06/18 at 09:53:42
|
score: Fix _Addresses_Subtract()
Use architecture-specific integer type for an address difference.
Update #3486.
|
-
Property mode set to
100644
|
File size:
1.2 KB
|
Line | |
---|
1 | /** |
---|
2 | * @file |
---|
3 | * |
---|
4 | * @brief RTEMS Port External to Internal |
---|
5 | * @ingroup ClassicDPMEM |
---|
6 | */ |
---|
7 | |
---|
8 | /* |
---|
9 | * COPYRIGHT (c) 1989-2014. |
---|
10 | * On-Line Applications Research Corporation (OAR). |
---|
11 | * |
---|
12 | * The license and distribution terms for this file may be |
---|
13 | * found in the file LICENSE in this distribution or at |
---|
14 | * http://www.rtems.org/license/LICENSE. |
---|
15 | */ |
---|
16 | |
---|
17 | #if HAVE_CONFIG_H |
---|
18 | #include "config.h" |
---|
19 | #endif |
---|
20 | |
---|
21 | #include <rtems/rtems/dpmemimpl.h> |
---|
22 | #include <rtems/score/address.h> |
---|
23 | |
---|
24 | rtems_status_code rtems_port_external_to_internal( |
---|
25 | rtems_id id, |
---|
26 | void *external, |
---|
27 | void **internal |
---|
28 | ) |
---|
29 | { |
---|
30 | Dual_ported_memory_Control *the_port; |
---|
31 | ISR_lock_Context lock_context; |
---|
32 | uintptr_t length; |
---|
33 | |
---|
34 | if ( internal == NULL ) { |
---|
35 | return RTEMS_INVALID_ADDRESS; |
---|
36 | } |
---|
37 | |
---|
38 | the_port = _Dual_ported_memory_Get( id, &lock_context ); |
---|
39 | |
---|
40 | if ( the_port == NULL ) { |
---|
41 | return RTEMS_INVALID_ID; |
---|
42 | } |
---|
43 | |
---|
44 | length = (uintptr_t) _Addresses_Subtract( external, the_port->external_base ); |
---|
45 | |
---|
46 | if ( length > the_port->length ) { |
---|
47 | *internal = external; |
---|
48 | } else { |
---|
49 | *internal = _Addresses_Add_offset( the_port->internal_base, length ); |
---|
50 | } |
---|
51 | |
---|
52 | _ISR_lock_ISR_enable( &lock_context ); |
---|
53 | return RTEMS_SUCCESSFUL; |
---|
54 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.