[Minios-devel] [UNIKRAFT PATCH v3 6/7] include: Add ctors.h header for iterating over init arrays

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

Adds `ctors.h` header that provide helper macros and defintions
for iterating over preinit_array and init_array sections.

Signed-off-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
---
 include/uk/plat/ctors.h | 75 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 include/uk/plat/ctors.h

diff --git a/include/uk/plat/ctors.h b/include/uk/plat/ctors.h
new file mode 100644
index 0000000..8c034af
--- /dev/null
+++ b/include/uk/plat/ctors.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
+ *
+ *
+ * Copyright (c) 2018, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#ifndef __UKPLAT_CTORS_H__
+#define __UKPLAT_CTORS_H__
+
+#include <uk/essentials.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void (*ukplat_ctor_func_t)(void);
+
+/* Function pointer arrays of constructors; provided by
+ * the platform's linker script */
+extern const ukplat_ctor_func_t const __preinit_array_start[];
+extern const ukplat_ctor_func_t const __preinit_array_end;
+extern const ukplat_ctor_func_t const __init_array_start[];
+extern const ukplat_ctor_func_t const __init_array_end;
+
+/**
+ * Helper macro for iterating over constructor pointer arrays
+ * Please note that the array may contain NULL pointer entries
+ *
+ * @param arr_start
+ *   Start address of pointer array (type: const ukplat_ctor_func_t const [])
+ * @param arr_end
+ *   End address of pointer array
+ * @param i
+ *   Iterator variable (integer) which should be used to access the
+ *   individual fields
+ */
+#define ukplat_ctor_foreach(arr_start, arr_end, i)                        \
+       for ((i)=0;                                                        \
+            &((arr_start)[i]) < &(arr_end); \
+            ++(i))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __UKPLAT_CTORS_H__ */
-- 
2.7.4


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