1 //========================================================================
5 // Initialization of stdout stream for ISO C library
7 //========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
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38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): jlarmour
46 // Purpose: Initialization of stdout stream for ISO C library
47 // Description: We put all this in a separate file in the hope that if
48 // no-one uses stdout, then it is not included in the image
51 //####DESCRIPTIONEND####
53 //========================================================================
57 #include <pkgconf/libc_stdio.h> // Configuration header
59 // Don't let us get the stream definitions of stdin/out/err from stdio.h
60 // since we are going to break the type safety :-(
61 #define CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS
63 // And we don't need the stdio inlines, which will otherwise complain if
64 // stdin/out/err are not available
65 #ifdef CYGIMP_LIBC_STDIO_INLINES
66 # undef CYGIMP_LIBC_STDIO_INLINES
71 #include <cyg/infra/cyg_type.h> // Common type definitions and support
72 #include <cyg/libc/stdio/stream.hxx> // Cyg_StdioStream class
73 #include <cyg/libc/stdio/stdiofiles.hxx> // C library files
74 #include <cyg/libc/stdio/stdiosupp.hxx> // Cyg_libc_stdio_find_filename()
78 // add 1 to the priority to allow it to be the fd 1 if necessary
79 #define PRIO (CYG_INIT_LIBC+1)
84 cyg_libc_stdio_stdout CYGBLD_ATTRIB_INIT_PRI(PRIO) = Cyg_StdioStream(
85 Cyg_libc_stdio_find_filename(CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE,
86 Cyg_StdioStream::CYG_STREAM_WRITE,
88 Cyg_StdioStream::CYG_STREAM_WRITE, false, false, _IOLBF );
92 // This is a dummy class just so we can execute arbitrary code when
93 // stdout is requested
95 class cyg_libc_dummy_stdout_init_class {
97 cyg_libc_dummy_stdout_init_class(void) {
98 Cyg_libc_stdio_files::set_file_stream(1, &cyg_libc_stdio_stdout);
102 // And here's an instance of the class just to make the code run
103 static cyg_libc_dummy_stdout_init_class cyg_libc_dummy_stdout_init
104 CYGBLD_ATTRIB_INIT_PRI(PRIO);
106 // and finally stdout itself
107 __externC Cyg_StdioStream * const stdout;
108 Cyg_StdioStream * const stdout=&cyg_libc_stdio_stdout;