ARM VERSION 1.2 Ficha Técnica descarregar pdf (Página 168)

The C and C++ Libraries

4.10.2 Target-dependent input/output support functions

rt_sys.h

defines the type

FILEHANDLE

. The value of

FILEHANDLE

is returned by

_sys_open()

and identifies an open file on the host system.

The target-dependent input and output functions and their library members are listed in

Table 4-15.

The default implementation of these functions is semihosted. That is, each function uses

the semihosting SWI. If any function is redefined, all stream-support functions must be

redefined.

Table 4-15 I/O support functions

Function Description

_sys_open()

_sys_open() on page 4-79

_sys_close()

_sys_close() on page 4-79

_sys_read()

_sys_seek() on page 4-83

_sys_write()

_sys_write() on page 4-81

_sys_seek()

_sys_read() on page 4-80

_sys_ensure()

_sys_ensure() on page 4-82

_sys_flen()

_sys_flen() on page 4-82

_sys_istty()

_sys_istty() on page 4-83

_sys_tmpnam()

_sys_tmpnam() on page 4-84

_sys_command_string()

_sys_command_string() on page 4-84

1 2 ... 163 164 165 166 167 168 169 170 171 172 173 ... 275 276

Sem comentários

ARM VERSION 1.2 Ficha Técnica Página 168