101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*/
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#if !defined(AVB_INSIDE_LIBAVB_H) && !defined(AVB_COMPILATION)
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#error "Never include this file directly, include libavb.h instead."
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#endif
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#ifndef AVB_SYSDEPS_H_
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#define AVB_SYSDEPS_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Change these includes to match your platform to bring in the
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* equivalent types available in a normal C runtime. At least things
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* like uint8_t, uint64_t, and bool (with |false|, |true| keywords)
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* must be present.
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*/
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#include <common.h>
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/* If you don't have gcc or clang, these attribute macros may need to
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* be adjusted.
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*/
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#define AVB_ATTR_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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#define AVB_ATTR_PACKED __attribute__((packed))
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#define AVB_ATTR_NO_RETURN __attribute__((noreturn))
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#define AVB_ATTR_SENTINEL __attribute__((__sentinel__))
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/* Size in bytes used for alignment. */
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#ifdef __LP64__
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#define AVB_ALIGNMENT_SIZE 8
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#else
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#define AVB_ALIGNMENT_SIZE 4
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#endif
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/* Compare |n| bytes in |src1| and |src2|.
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*
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* Returns an integer less than, equal to, or greater than zero if the
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* first |n| bytes of |src1| is found, respectively, to be less than,
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* to match, or be greater than the first |n| bytes of |src2|. */
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int avb_memcmp(const void* src1,
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const void* src2,
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size_t n) AVB_ATTR_WARN_UNUSED_RESULT;
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/* Compare two strings.
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*
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* Return an integer less than, equal to, or greater than zero if |s1|
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* is found, respectively, to be less than, to match, or be greater
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* than |s2|.
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*/
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int avb_strcmp(const char* s1, const char* s2);
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/* Copy |n| bytes from |src| to |dest|. */
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void* avb_memcpy(void* dest, const void* src, size_t n);
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/* Set |n| bytes starting at |s| to |c|. Returns |dest|. */
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void* avb_memset(void* dest, const int c, size_t n);
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/* Prints out a message. The string passed must be a NUL-terminated
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* UTF-8 string.
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*/
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void avb_print(const char* message);
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/* Prints out a vector of strings. Each argument must point to a
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* NUL-terminated UTF-8 string and NULL should be the last argument.
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*/
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void avb_printv(const char* message, ...) AVB_ATTR_SENTINEL;
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/* Aborts the program or reboots the device. */
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void avb_abort(void) AVB_ATTR_NO_RETURN;
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/* Allocates |size| bytes. Returns NULL if no memory is available,
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* otherwise a pointer to the allocated memory.
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*
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* The memory is not initialized.
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*
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* The pointer returned is guaranteed to be word-aligned.
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*
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* The memory should be freed with avb_free() when you are done with it.
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*/
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void* avb_malloc_(size_t size) AVB_ATTR_WARN_UNUSED_RESULT;
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/* Frees memory previously allocated with avb_malloc(). */
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void avb_free(void* ptr);
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/* Returns the lenght of |str|, excluding the terminating NUL-byte. */
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size_t avb_strlen(const char* str) AVB_ATTR_WARN_UNUSED_RESULT;
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/* Divide the |dividend| by 10 and saves back to the pointer. Return the
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* remainder. */
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uint32_t avb_div_by_10(uint64_t* dividend);
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#ifdef __cplusplus
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}
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#endif
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#endif /* AVB_SYSDEPS_H_ */
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