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authorAlistair Popple <alistair@popple.id.au>2016-01-07 16:19:43 +1100
committerAlistair Popple <alistair@popple.id.au>2016-01-11 18:51:07 +1100
commit4c3473a4785336103cc47de95fddbbba12b12e7a (patch)
tree06c8c19e6c8494e8dc9695bec8bc7c446d930d95 /ccan/array_size/_info
downloadpdbg-4c3473a4785336103cc47de95fddbbba12b12e7a.tar.gz
pdbg-4c3473a4785336103cc47de95fddbbba12b12e7a.zip
Initial release of pdbg
pdbg is a tool to access P8 host registers and memory from the BMC for kernel and firmware debugging purposes. Signed-off-by: Alistair Popple <alistair@popple.id.au>
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+#include <stdio.h>
+#include <string.h>
+#include "config.h"
+
+/**
+ * array_size - routine for safely deriving the size of a visible array.
+ *
+ * This provides a simple ARRAY_SIZE() macro, which (given a good compiler)
+ * will also break compile if you try to use it on a pointer.
+ *
+ * This can ensure your code is robust to changes, without needing a gratuitous
+ * macro or constant.
+ *
+ * Example:
+ * // Outputs "Initialized 32 values"
+ * #include <ccan/array_size/array_size.h>
+ * #include <stdlib.h>
+ * #include <stdio.h>
+ *
+ * // We currently use 32 random values.
+ * static unsigned int vals[32];
+ *
+ * int main(void)
+ * {
+ * unsigned int i;
+ * for (i = 0; i < ARRAY_SIZE(vals); i++)
+ * vals[i] = random();
+ * printf("Initialized %u values\n", i);
+ * return 0;
+ * }
+ *
+ * License: CC0 (Public domain)
+ * Author: Rusty Russell <rusty@rustcorp.com.au>
+ */
+int main(int argc, char *argv[])
+{
+ if (argc != 2)
+ return 1;
+
+ if (strcmp(argv[1], "depends") == 0) {
+ printf("ccan/build_assert\n");
+ return 0;
+ }
+
+ return 1;
+}
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