Changeset d2978ee9 in rtems

Timestamp:

Aug 10, 2000, 2:09:51 PM (20 years ago)

Author:

Joel Sherrill <joel.sherrill@…>

Branches:

4.10, 4.11, 4.8, 4.9, 5, master

Children:

4a5578a

Parents:

e94ad1fe

Message:

2000-08-10 Charles-Antoine Gauthier <charles.gauthier@…>

• shared/src/cache_manager.c (rtems_cache_flush_multiple_data_lines, rtems_cache_invalidate_multiple_data_lines): Do not operate on the entire address space when flushing zero bytes.

File:

• c/src/lib/libcpu/shared/src/cache_manager.c (modified) (3 diffs)

c/src/lib/libcpu/shared/src/cache_manager.c

@@ -58 +58 @@
   */
 
+  if( n_bytes == 0 )
+    /* Do nothing if number of bytes to flush is zero */
+    return;
+    
   final_address = (void *)((size_t)d_addr + n_bytes - 1);
   d_addr = (void *)((size_t)d_addr & ~(CPU_DATA_CACHE_ALIGNMENT - 1));
@@ -86 +90 @@
   */
 
+  if( n_bytes == 0 )
+    /* Do nothing if number of bytes to invalidate is zero */
+    return;
+    
   final_address = (void *)((size_t)d_addr + n_bytes - 1);
   d_addr = (void *)((size_t)d_addr & ~(CPU_DATA_CACHE_ALIGNMENT - 1));
@@ -209 +217 @@
   */
 
+  if( n_bytes == 0 )
+    /* Do nothing if number of bytes to invalidate is zero */
+    return;
+    
   final_address = (void *)((size_t)i_addr + n_bytes - 1);
   i_addr = (void *)((size_t)i_addr & ~(CPU_INSTRUCTION_CACHE_ALIGNMENT - 1));