建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/include/metal/utilities.h

@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	utilities.h
+ * @brief	Utility routines for libmetal.
+ */
+
+#ifndef __METAL_UTILITIES__H__
+#define __METAL_UTILITIES__H__
+
+#include <stdint.h>
+#include <metal/assert.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \defgroup utilities Simple Utilities
+ *  @{ */
+
+/** Marker for unused function arguments/variables. */
+#define metal_unused(x)	do { (x) = (x); } while (0)
+
+/** Figure out number of elements in an array. */
+#define metal_dim(x)	(sizeof(x) / sizeof(x[0]))
+
+/** Minimum of two numbers (warning: multiple evaluation!).  */
+#define metal_min(x, y)	((x) < (y) ? (x) : (y))
+
+/** Maximum of two numbers (warning: multiple evaluation!).  */
+#define metal_max(x, y)	((x) > (y) ? (x) : (y))
+
+/** Sign of a number [-1, 0, or 1] (warning: multiple evaluation!).  */
+#define metal_sign(x)	((x) < 0 ? -1 : ((x) > 0 ? 1 : 0))
+
+/** Align 'size' down to a multiple of 'align' (must be a power of two). */
+#define metal_align_down(size, align)			\
+	((size) & ~((align) - 1))
+
+/** Align 'size' up to a multiple of 'align' (must be a power of two). */
+#define metal_align_up(size, align)			\
+	metal_align_down((size) + (align) - 1, align)
+
+/** Divide (and round down). */
+#define metal_div_round_down(num, den)			\
+	((num) / (den))
+
+/** Divide (and round up). */
+#define metal_div_round_up(num, den)			\
+	metal_div_round_down((num) + (den) - 1, (den))
+
+/** Align 'ptr' down to a multiple of 'align' (must be a power of two). */
+#define metal_ptr_align_down(ptr, align)		\
+	(void *)(metal_align_down((uintptr_t)(ptr), (uintptr_t)(align)))
+
+/** Align 'ptr' up to a multiple of 'align' (must be a power of two). */
+#define metal_ptr_align_up(ptr, align)			\
+	(void *)(metal_align_up((uintptr_t)(ptr), (uintptr_t)(align)))
+
+/** Compute offset of a field within a structure. */
+#define metal_offset_of(structure, member)		\
+	((uintptr_t) &(((structure *) 0)->member))
+
+/** Compute pointer to a structure given a pointer to one of its fields. */
+#define metal_container_of(ptr, structure, member)	\
+	(void *)((uintptr_t)(ptr) - metal_offset_of(structure, member))
+
+#define METAL_BITS_PER_ULONG	(8 * sizeof(unsigned long))
+
+#define metal_bit(bit)		(1UL << (bit))
+
+#define metal_bitmap_longs(x)	metal_div_round_up((x), METAL_BITS_PER_ULONG)
+
+static inline void metal_bitmap_set_bit(unsigned long *bitmap, int bit)
+{
+	bitmap[bit / METAL_BITS_PER_ULONG] |=
+		metal_bit(bit & (METAL_BITS_PER_ULONG - 1));
+}
+
+static inline int metal_bitmap_is_bit_set(unsigned long *bitmap, int bit)
+{
+	return bitmap[bit / METAL_BITS_PER_ULONG] &
+		metal_bit(bit & (METAL_BITS_PER_ULONG - 1));
+}
+
+static inline void metal_bitmap_clear_bit(unsigned long *bitmap, int bit)
+{
+	bitmap[bit / METAL_BITS_PER_ULONG] &=
+		~metal_bit(bit & (METAL_BITS_PER_ULONG - 1));
+}
+
+static inline int metal_bitmap_is_bit_clear(unsigned long *bitmap, int bit)
+{
+	return !metal_bitmap_is_bit_set(bitmap, bit);
+}
+
+static inline unsigned int
+metal_bitmap_next_set_bit(unsigned long *bitmap, unsigned int start,
+			  unsigned int max)
+{
+	unsigned int bit;
+	for (bit = start;
+	     bit < max && !metal_bitmap_is_bit_set(bitmap, bit);
+	     bit ++)
+		;
+	return bit;
+}
+
+#define metal_bitmap_for_each_set_bit(bitmap, bit, max)			\
+	for ((bit) = metal_bitmap_next_set_bit((bitmap), 0, (max));	\
+	     (bit) < (max);						\
+	     (bit) = metal_bitmap_next_set_bit((bitmap), (bit), (max)))
+
+static inline unsigned int
+metal_bitmap_next_clear_bit(unsigned long *bitmap, unsigned int start,
+			    unsigned int max)
+{
+	unsigned int bit;
+	for (bit = start;
+	     bit < max && !metal_bitmap_is_bit_clear(bitmap, bit);
+	     bit ++)
+		;
+	return bit;
+}
+
+#define metal_bitmap_for_each_clear_bit(bitmap, bit, max)		\
+	for ((bit) = metal_bitmap_next_clear_bit((bitmap), 0, (max));	\
+	     (bit) < (max);						\
+	     (bit) = metal_bitmap_next_clear_bit((bitmap), (bit), (max)))
+
+static inline unsigned long metal_log2(unsigned long in)
+{
+	unsigned long result;
+
+	metal_assert((in & (in - 1)) == 0);
+
+	for (result = 0; (1UL << result) < in; result ++)
+		;
+	return result;
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __METAL_UTILITIES__H__ */