summaryrefslogtreecommitdiffstats
path: root/cpukit/libcsupport/src/malloc.c
diff options
context:
space:
mode:
authorJoel Sherrill <joel.sherrill@OARcorp.com>2000-06-12 19:57:02 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2000-06-12 19:57:02 +0000
commit8ef38186faea3d9b5e6f0f1242f668cb7e7a3d52 (patch)
tree9253f150814c99167239f7c2cc850cdd9d92c003 /cpukit/libcsupport/src/malloc.c
parentEnsure that when -msoft-float is specified for multilib builds, that (diff)
downloadrtems-8ef38186faea3d9b5e6f0f1242f668cb7e7a3d52.tar.bz2
Patch from John Cotton <john.cotton@nrc.ca>, Charles-Antoine Gauthier
<charles.gauthier@iit.nrc.ca>, and Darlene A. Stewart <Darlene.Stewart@nrc.ca> to add support for a number of very significant things: + BSPs for many variations on the Motorola MBX8xx board series + Cache Manager including initial support for m68040 and PowerPC + Rework of mpc8xx libcpu code so all mpc8xx CPUs now use same code base. + Rework of eth_comm BSP to utiltize above. John reports this works on the 821 and 860
Diffstat (limited to 'cpukit/libcsupport/src/malloc.c')
-rw-r--r--cpukit/libcsupport/src/malloc.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/malloc.c b/cpukit/libcsupport/src/malloc.c
index 08660d75cc..dc6824891a 100644
--- a/cpukit/libcsupport/src/malloc.c
+++ b/cpukit/libcsupport/src/malloc.c
@@ -418,5 +418,27 @@ void _free_r(
{
free( ptr );
}
+
+
+/*
+ * rtems_cache_aligned_malloc
+ *
+ * DESCRIPTION:
+ *
+ * This function is used to allocate storage that spans an
+ * integral number of cache blocks.
+ */
+RTEMS_INLINE_ROUTINE void * rtems_cache_aligned_malloc (
+ size_t nbytes
+)
+{
+ /*
+ * Arrange to have the user storage start on the first cache
+ * block beyond the header.
+ */
+ return (void *) ((((unsigned long) malloc( nbytes + _CPU_DATA_CACHE_ALIGNMENT - 1 ))
+ + _CPU_DATA_CACHE_ALIGNMENT - 1 ) &(~(_CPU_DATA_CACHE_ALIGNMENT - 1)) );
+}
+
#endif