a5788ff12d
ARC MWDT toolchain misses stdout hooks implementation and itimerspec structure in timespec header. Let's add them in arcmwdt compatibility layer. The implementation was inspired by libc-hooks.c for NEWLIB. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
91 lines
3.0 KiB
C
91 lines
3.0 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_SYS_LIBC_HOOKS_H_
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#define ZEPHYR_INCLUDE_SYS_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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#if defined(CONFIG_NEWLIB_LIBC) || defined(CONFIG_ARCMWDT_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 z_zephyr_read_stdin(char *buf, int nbytes);
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__syscall int z_zephyr_write_stdout(const void *buf, int nbytes);
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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_USERSPACE
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#if defined(CONFIG_NEWLIB_LIBC)
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/* If we are using newlib, the heap arena is in one of two areas:
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* - If we have an MPU that requires power of two alignment, the heap bounds
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* must be specified in Kconfig via CONFIG_NEWLIB_LIBC_ALIGNED_HEAP_SIZE.
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* - Otherwise, the heap arena on most arches starts at a suitably
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* aligned base addreess after the `_end` linker symbol, through to the end
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* of system RAM.
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*/
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#if (!defined(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT) || \
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(defined(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT) && \
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CONFIG_NEWLIB_LIBC_ALIGNED_HEAP_SIZE))
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#define Z_MALLOC_PARTITION_EXISTS 1
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extern struct k_mem_partition z_malloc_partition;
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#endif
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#elif defined(CONFIG_MINIMAL_LIBC)
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#if (CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE > 0)
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/* Minimal libc by default has no malloc arena, its size must be set in
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* Kconfig via CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE
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*/
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#define Z_MALLOC_PARTITION_EXISTS 1
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#endif /* CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE > 0 */
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#endif /* CONFIG_MINIMAL_LIBC */
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#ifdef Z_MALLOC_PARTITION_EXISTS
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/* Memory partition containing the libc malloc arena. Configuration controls
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* whether this is available, and an arena size may need to be set.
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*/
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extern struct k_mem_partition z_malloc_partition;
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#endif
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#if defined(CONFIG_NEWLIB_LIBC) || defined(CONFIG_STACK_CANARIES) || \
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defined(CONFIG_NEED_LIBC_MEM_PARTITION)
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/* - All newlib globals will be placed into z_libc_partition.
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* - Minimal C library globals, if any, will be placed into
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* z_libc_partition.
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* - Stack canary globals will be placed into z_libc_partition since
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* it is not worth placing in its own partition.
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* - Some architectures may place the global pointer to the thread local
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* storage in z_libc_partition since it is not worth placing in its
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* own partition.
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*/
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#define Z_LIBC_PARTITION_EXISTS 1
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/* C library globals, except the malloc arena */
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extern struct k_mem_partition z_libc_partition;
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#endif
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#endif /* CONFIG_USERSPACE */
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#include <syscalls/libc-hooks.h>
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#endif /* ZEPHYR_INCLUDE_SYS_LIBC_HOOKS_H_ */
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