import vapier

[home.git] / dump.c

diff --git a/dump.c b/dump.c
new file mode 100644 (file)
index 0000000..0c213a5
--- /dev/null
+++ b/dump.c
@@ -0,0 +1,52 @@
+#include <bfin_sram.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(int argc, char *argv[])
+{
+       void *l1_addr = (void *)0xf0000000;
+       void *src_addr, *dst_addr;
+       size_t count;
+       enum { AUTO, DMA, CORE } use_dma = AUTO;
+
+       if (argc > 1) {
+               if (!strcmp(argv[1], "-d"))
+                       use_dma = DMA;
+               else if (!strcmp(argv[1], "-c"))
+                       use_dma = CORE;
+               if (use_dma != AUTO)
+                       --argc, ++argv;
+       }
+
+       if (argc != 3) {
+               fprintf(stderr,
+                       "Usage: dump [-d|-c] <address> <count>\n"
+                       " -d - use DMA for copy (default if address >= %p)\n"
+                       " -c - use core loads (default if address < %p)\n"
+                       "Values are in hex.\n", l1_addr, l1_addr);
+               return EXIT_FAILURE;
+       }
+
+       src_addr = (void *)strtoul(argv[1], NULL, 16);
+       count = strtoul(argv[2], NULL, 16);
+       if (use_dma == AUTO)
+               use_dma = (src_addr >= l1_addr ? DMA : CORE);
+
+       fprintf(stderr, "Copying %zi bytes from %p\n", count, src_addr);
+
+       dst_addr = malloc(count);
+       fprintf(stderr, "%smemcpy(%p, %p, %zi);\n",
+               (use_dma == DMA ? "dma_" : ""),
+               dst_addr, src_addr, count);
+       if (use_dma == DMA)
+               dma_memcpy(dst_addr, src_addr, count);
+       else
+               memcpy(dst_addr, src_addr, count);
+       fprintf(stderr, "write(%i, %p, %zi);\n", 1, dst_addr, count);
+       write(1, dst_addr, count);
+
+       return 0;
+}