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-rw-r--r--src/jtag/jtag.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c
index 605d58aa..663518a3 100644
--- a/src/jtag/jtag.c
+++ b/src/jtag/jtag.c
@@ -463,6 +463,39 @@ void* cmd_queue_alloc(size_t size)
int offset;
u8 *t;
+ /*
+ * WARNING:
+ * We align/round the *SIZE* per below
+ * so that all pointers returned by
+ * this function are reasonably well
+ * aligned.
+ *
+ * If we did not, then an "odd-length" request would cause the
+ * *next* allocation to be at an *odd* address, and because
+ * this function has the same type of api as malloc() - we
+ * must also return pointers that have the same type of
+ * alignment.
+ *
+ * What I do not/have is a reasonable portable means
+ * to align by...
+ *
+ * The solution here, is based on these suggestions.
+ * http://gcc.gnu.org/ml/gcc-help/2008-12/msg00041.html
+ *
+ */
+ union worse_case_align {
+ int i;
+ long l;
+ float f;
+ void *v;
+ };
+#define ALIGN_SIZE (sizeof(union worse_case_align))
+
+ // The alignment process.
+ size = (size + ALIGN_SIZE -1) & (~(ALIGN_SIZE-1));
+ // Done...
+
+
if (*p_page)
{
while ((*p_page)->next)