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libc: syscall: make aliases WEAK by default

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make all syscall functions overridable

Signed-off-by: Pavlo Hamov <pavlo_hamov@jabil.com>
This commit is contained in:
Pavlo Hamov 2019-12-16 20:44:37 +02:00 • committed by Andrew Boie
commit 03baef9975
1 changed files with 12 additions and 12 deletions
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24
lib/libc/newlib/libc-hooks.c
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@ -174,7 +174,7 @@ int _read(int fd, char *buf, int nbytes)
return z_impl_zephyr_read_stdin(buf, nbytes);
}
FUNC_ALIAS(_read, read, int);
__weak FUNC_ALIAS(_read, read, int);
int _write(int fd, const void *buf, int nbytes)
{
@ -182,25 +182,25 @@ int _write(int fd, const void *buf, int nbytes)
return z_impl_zephyr_write_stdout(buf, nbytes);
}
FUNC_ALIAS(_write, write, int);
__weak FUNC_ALIAS(_write, write, int);
int _open(const char *name, int mode)
{
return -1;
}
FUNC_ALIAS(_open, open, int);
__weak FUNC_ALIAS(_open, open, int);
int _close(int file)
{
return -1;
}
FUNC_ALIAS(_close, close, int);
__weak FUNC_ALIAS(_close, close, int);
int _lseek(int file, int ptr, int dir)
{
return 0;
}
FUNC_ALIAS(_lseek, lseek, int);
__weak FUNC_ALIAS(_lseek, lseek, int);
#else
extern ssize_t write(int file, const char *buffer, size_t count);
#define _write write
@ -210,28 +210,28 @@ int _isatty(int file)
{
return 1;
}
FUNC_ALIAS(_isatty, isatty, int);
__weak FUNC_ALIAS(_isatty, isatty, int);
int _kill(int i, int j)
{
return 0;
}
FUNC_ALIAS(_kill, kill, int);
__weak FUNC_ALIAS(_kill, kill, int);
int _getpid(void)
{
return 0;
}
FUNC_ALIAS(_getpid, getpid, int);
__weak FUNC_ALIAS(_getpid, getpid, int);
int _fstat(int file, struct stat *st)
{
st->st_mode = S_IFCHR;
return 0;
}
FUNC_ALIAS(_fstat, fstat, int);
__weak FUNC_ALIAS(_fstat, fstat, int);
void _exit(int status)
__weak void _exit(int status)
{
_write(1, "exit\n", 5);
while (1) {
@ -264,9 +264,9 @@ void *_sbrk(int count)
return ret;
}
FUNC_ALIAS(_sbrk, sbrk, void *);
__weak FUNC_ALIAS(_sbrk, sbrk, void *);
int *__errno(void)
__weak int *__errno(void)
{
return z_errno();
}