X-Git-Url: http://sraa.de/git/?a=blobdiff_plain;f=minidol%2Flib%2Findex.c;fp=minidol%2Flib%2Findex.c;h=4841b7db42c0b798b938fb0a978896aeb7bde623;hb=dea7a4fb1ed110d3ce6e6d9255103d724bd66c0e;hp=0000000000000000000000000000000000000000;hpb=3e30b001296fb059cb070498bbe5d8e8834cd3e3;p=jump.git

diff --git a/minidol/lib/index.c b/minidol/lib/index.c
new file mode 100644
index 0000000..4841b7d
--- /dev/null
+++ b/minidol/lib/index.c
@@ -0,0 +1,20 @@
+/* index.c: some index calculations */
+
+#include <stdint.h>
+
+#include "e_lib.h"
+
+/* some defines */
+#define CORE0		0x808	/* coreid of first core */
+#define CORES_PER_ROW	4	/* cores per row - 4 on E16G3 */
+
+uint32_t core_id2lin(e_coreid_t coreid)
+{	/* take coreid, return linear index */
+	return((coreid-CORE0) / (64/CORES_PER_ROW) + (coreid-CORE0)%64);
+}
+
+uint32_t core_lin2id(uint32_t eidx)
+{	/* take linear index, return coreid */
+	return(64 * eidx / CORES_PER_ROW + eidx % CORES_PER_ROW + CORE0);
+}
+