1 files changed, 83 insertions, 0 deletions
diff --git a/core/include/kernel/tee_misc.h b/core/include/kernel/tee_misc.h
new file mode 100644
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+++ b/core/include/kernel/tee_misc.h
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+/*
+ * Copyright (c) 2014, STMicroelectronics International N.V.
+ * 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.
+ *
+ * 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.
+ */
+#ifndef TEE_MISC_H
+#define TEE_MISC_H
+
+#include <types_ext.h>
+
+/*
+ * Macro to derive hex string buffer size from binary buffer size & the
+ * reverse
+ */
+#define TEE_B2HS_HSBUF_SIZE(x) ((x) * 2 + 1)
+#define TEE_HS2B_BBUF_SIZE(x) ((x + 1) >> 1)
+
+/*
+ * binary to hex string buffer
+ * Returns the number of data bytes written to the hex string
+ */
+uint32_t tee_b2hs(uint8_t *b, uint8_t *hs, uint32_t blen, uint32_t hslen);
+
+/*
+ * hex string to binary buffer
+ * Returns the number of data bytes written to the bin buffer
+ */
+uint32_t tee_hs2b(uint8_t *hs, uint8_t *b, uint32_t hslen, uint32_t blen);
+
+/*
+ * Is buffer 'b' inside/outside/overlapping area 'a'?
+ *
+ * core_is_buffer_inside() - return true if buffer is inside memory area
+ * core_is_buffer_outside() - return true if buffer is outside area
+ * core_is_buffer_intersect() - return true if buffer overlaps area
+ *
+ * Warning: core_is_buffer_inside(x,x,x,x)==false does NOT mean
+ * core_is_buffer_outside(x,x,x,x)==true.
+ *
+ * Arguments use by each of these routines:
+ * @b - buffer start address (handled has an unsigned offset)
+ * @bl - length (in bytes) of the target buffer
+ * @a - memory area start address (handled has an unsigned offset)
+ * @al - memory area length (in byte)
+ */
+#define core_is_buffer_inside(b, bl, a, al) \
+	_core_is_buffer_inside((vaddr_t)(b), (size_t)(bl), \
+				(vaddr_t)(a), (size_t)(al))
+
+#define core_is_buffer_outside(b, bl, a, al) \
+	_core_is_buffer_outside((vaddr_t)(b), (size_t)(bl), \
+				(vaddr_t)(a), (size_t)(al))
+
+#define core_is_buffer_intersect(b, bl, a, al) \
+	_core_is_buffer_intersect((vaddr_t)(b), (size_t)(bl), \
+				(vaddr_t)(a), (size_t)(al))
+
+bool _core_is_buffer_inside(vaddr_t b, size_t bl, vaddr_t a, size_t al);
+bool _core_is_buffer_outside(vaddr_t b, size_t bl, vaddr_t a, size_t al);
+bool _core_is_buffer_intersect(vaddr_t b, size_t bl, vaddr_t a, size_t al);
+
+#endif /* TEE_MISC_H */