int ALT_WRITE (int file, const void *ptr, size_t len)
{
#ifdef ALT_STDOUT_PRESENT
ALT_DRIVER_WRITE_EXTERNS(ALT_STDOUT_DEV);
#endif
#ifdef ALT_STDERR_PRESENT
ALT_DRIVER_WRITE_EXTERNS(ALT_STDERR_DEV);
#endif
#if !defined(ALT_STDOUT_PRESENT) && !defined(ALT_STDERR_PRESENT)
/* Generate a link time warning, should this function ever be called. */
ALT_STUB_WARNING(write);
#endif
switch (file) {
#ifdef ALT_STDOUT_PRESENT
case 1: /* stdout file descriptor */
return ALT_DRIVER_WRITE(ALT_STDOUT_DEV, ptr, len, 0);
#endif /* ALT_STDOUT_PRESENT */
#ifdef ALT_STDERR_PRESENT
case 2: /* stderr file descriptor */
return ALT_DRIVER_WRITE(ALT_STDERR_DEV, ptr, len, 0);
#endif /* ALT_STDERR_PRESENT */
default:
ALT_ERRNO = EBADFD;
return -1;
}
}
/*
* Uses the ALT_DRIVER_WRITE() macro to call directly to driver if available.
* Otherwise, uses newlib provided fputs() routine.
*/
int
alt_putstr(const char* str)
{
#ifdef ALT_USE_DIRECT_DRIVERS
ALT_DRIVER_WRITE_EXTERNS(ALT_STDOUT_DEV);
return ALT_DRIVER_WRITE(ALT_STDOUT_DEV, str, strlen(str), 0);
#else
return fputs(str, stdout);
#endif
}
/*
* Uses the ALT_DRIVER_WRITE() macro to call directly to driver if available.
* Otherwise, uses newlib provided fputs() routine.
*/
int
alt_putstr(const char* str)
{
#ifdef ALT_SEMIHOSTING
return write(STDOUT_FILENO,str,strlen(str));
#else
#ifdef ALT_USE_DIRECT_DRIVERS
ALT_DRIVER_WRITE_EXTERNS(ALT_STDOUT_DEV);
return ALT_DRIVER_WRITE(ALT_STDOUT_DEV, str, strlen(str), 0);
#else
return fputs(str, stdout);
#endif
#endif
}
/*
* Uses the ALT_DRIVER_WRITE() macro to call directly to driver if available.
* Otherwise, uses newlib provided putchar() routine.
*/
int
alt_putchar(int c)
{
#ifdef ALT_USE_DIRECT_DRIVERS
ALT_DRIVER_WRITE_EXTERNS(ALT_STDOUT_DEV);
char c1 = (char)(c & 0xff);
if (ALT_DRIVER_WRITE(ALT_STDOUT_DEV, &c1, 1, 0) == -1) {
return -1;
}
return c;
#else
return putchar(c);
#endif
}