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84 lines
3.3 KiB
C
84 lines
3.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef _ROM_LIBC_STUBS_H_
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#define _ROM_LIBC_STUBS_H_
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#include <sys/lock.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <reent.h>
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#include <errno.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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ESP32-C3 ROM code contains implementations of some of C library functions.
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Whenever a function in ROM needs to use a syscall, it calls a pointer to the corresponding syscall
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implementation defined in the following struct.
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The table itself, by default, is not allocated in RAM. A global pointer syscall_table_ptr is used to
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set the address
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So, before using any of the C library functions (except for pure functions and memcpy/memset functions),
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application must allocate syscall table structure for each CPU being used, and populate it with pointers
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to actual implementations of corresponding syscalls.
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*/
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struct syscall_stub_table
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{
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struct _reent* (*__getreent)(void);
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void* (*_malloc_r)(struct _reent *r, size_t);
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void (*_free_r)(struct _reent *r, void*);
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void* (*_realloc_r)(struct _reent *r, void*, size_t);
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void* (*_calloc_r)(struct _reent *r, size_t, size_t);
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void (*_abort)(void);
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int (*_system_r)(struct _reent *r, const char*);
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int (*_rename_r)(struct _reent *r, const char*, const char*);
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clock_t (*_times_r)(struct _reent *r, struct tms *);
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int (*_gettimeofday_r) (struct _reent *r, struct timeval *, void *);
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void (*_raise_r)(struct _reent *r);
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int (*_unlink_r)(struct _reent *r, const char*);
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int (*_link_r)(struct _reent *r, const char*, const char*);
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int (*_stat_r)(struct _reent *r, const char*, struct stat *);
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int (*_fstat_r)(struct _reent *r, int, struct stat *);
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void* (*_sbrk_r)(struct _reent *r, ptrdiff_t);
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int (*_getpid_r)(struct _reent *r);
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int (*_kill_r)(struct _reent *r, int, int);
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void (*_exit_r)(struct _reent *r, int);
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int (*_close_r)(struct _reent *r, int);
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int (*_open_r)(struct _reent *r, const char *, int, int);
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int (*_write_r)(struct _reent *r, int, const void *, int);
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int (*_lseek_r)(struct _reent *r, int, int, int);
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int (*_read_r)(struct _reent *r, int, void *, int);
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void (*_retarget_lock_init)(_LOCK_T *lock);
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void (*_retarget_lock_init_recursive)(_LOCK_T *lock);
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void (*_retarget_lock_close)(_LOCK_T lock);
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void (*_retarget_lock_close_recursive)(_LOCK_T lock);
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void (*_retarget_lock_acquire)(_LOCK_T lock);
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void (*_retarget_lock_acquire_recursive)(_LOCK_T lock);
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int (*_retarget_lock_try_acquire)(_LOCK_T lock);
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int (*_retarget_lock_try_acquire_recursive)(_LOCK_T lock);
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void (*_retarget_lock_release)(_LOCK_T lock);
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void (*_retarget_lock_release_recursive)(_LOCK_T lock);
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int (*_printf_float)(struct _reent *data, void *pdata, FILE * fp, int (*pfunc) (struct _reent *, FILE *, const char *, size_t len), va_list * ap);
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int (*_scanf_float) (struct _reent *rptr, void *pdata, FILE *fp, va_list *ap);
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void (*__assert_func) (const char *file, int line, const char * func, const char *failedexpr) __attribute__((noreturn));
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void (*__sinit) (struct _reent *r);
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void (*_cleanup_r) (struct _reent* r);
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};
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extern struct syscall_stub_table *syscall_table_ptr;
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif /* _ROM_LIBC_STUBS_H_ */
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