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https://github.com/zephyrproject-rtos/zephyr
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4b4f773484
* Newlib now defines a special z_newlib_partition containing all globals relevant to newlib. Most of these are in libc.a with a heap tracking variable in newlib's hooks. * Both C libraries now expose a k_mem_partition containing the bounds of the malloc heap arena. Threads that want to use libc malloc() will need to add this to their memory domain. * z_newlib_get_heap_bounds has been removed, in favor of the memory partition for the heap arena * ztest now includes the C library partitions in its memory domain. * The mem_alloc test now runs in user mode to prove that this all works for both C libraries. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* Copyright (c) 2018, Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_MISC_LIBC_HOOKS_H_
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#define ZEPHYR_INCLUDE_MISC_LIBC_HOOKS_H_
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#include <toolchain.h>
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#include <stdio.h>
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#include <stddef.h>
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/*
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* Private header for specifying accessory functions to the C library internals
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* that need to call into the kernel as system calls
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*/
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#ifdef CONFIG_NEWLIB_LIBC
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/* syscall generation ignores preprocessor, ensure this is defined to ensure
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* we don't have compile errors
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*/
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#define _MLIBC_RESTRICT
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__syscall int _zephyr_read(char *buf, int nbytes);
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__syscall int _zephyr_write(const void *buf, int nbytes);
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#ifdef CONFIG_APP_SHARED_MEM
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/* Memory partition containing newlib's globals. This includes all the globals
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* within libc.a and the supporting zephyr hooks, but not the malloc arena.
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*/
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extern struct k_mem_partition z_newlib_partition;
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#endif /* CONFIG_APP_SHARED_MEM */
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#else
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/* Minimal libc */
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__syscall int _zephyr_fputc(int c, FILE *stream);
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__syscall size_t _zephyr_fwrite(const void *_MLIBC_RESTRICT ptr, size_t size,
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size_t nitems, FILE *_MLIBC_RESTRICT stream);
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#endif /* CONFIG_NEWLIB_LIBC */
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#ifdef CONFIG_APP_SHARED_MEM
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/* Memory partition containing the libc malloc arena */
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extern struct k_mem_partition z_malloc_partition;
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#endif
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#include <syscalls/libc-hooks.h>
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#endif /* ZEPHYR_INCLUDE_MISC_LIBC_HOOKS_H_ */
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