sandbox: add getopt support

This adds simple command-line parsing to sandbox. The idea is that it
sets up the state with options provided, and this state can then be
queried later, as needed.

New flags are declared with the SB_CMDLINE_OPT_SHORT helper macro,
pointers are automatically gathered up in a special section, and
then the core code takes care of gathering them up and processing
at runtime.  This way there is no central place where we have to
store a list of flags with ifdefs.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/sandbox/include/asm/sections.h b/arch/sandbox/include/asm/sections.h
new file mode 100644
index 0000000000..eafce7d8ab
--- /dev/null
+++ b/arch/sandbox/include/asm/sections.h
@@ -0,0 +1,22 @@
+/*
+ * decls for symbols defined in the linker script
+ *
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __SANDBOX_SECTIONS_H
+#define __SANDBOX_SECTIONS_H
+
+struct sb_cmdline_option;
+
+extern struct sb_cmdline_option *__u_boot_sandbox_option_start[],
+	*__u_boot_sandbox_option_end[];
+
+static inline size_t __u_boot_sandbox_option_count(void)
+{
+	return __u_boot_sandbox_option_end - __u_boot_sandbox_option_start;
+}
+
+#endif