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Use libc from newlib (#1752)

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* Use newlib libc library

This change adds libcmin.a, which is created from newlib libc by selectively removing some of the object files (mostly related to heap management).
The list of files is available in tools/sdk/lib/make_libcmin.sh. Files which are not needed are commented out.
This change adds support for various functions which were missing, like sscanf, strftime, etc.

* Fix some of the time functions

* Redirect stdout to serial

* Implement __putc_r

* Switch to custom newlib build

Built from https://github.com/igrr/newlib-xtensa using:
./configure --with-newlib --enable-multilib --disable-newlib-io-c99-formats --enable-newlib-supplied-syscalls --enable-target-optspace --program-transform-name="s&^&xtensa-lx106-elf-&" --disable-option-checking --with-target-subdir=xtensa-lx106-elf --target=xtensa-lx106-elf --enable-newlib-nano-formatted-io --enable-newlib-reent-small  --prefix=path-to-arduino-core/tools/sdk/libc
CROSS_CFLAGS="-DMALLOC_PROVIDED -DSIGNAL_PROVIDED -DABORT_PROVIDED" make
make install

* Update tests
This commit is contained in:
Ivan Grokhotkov
2016-06-23 17:27:57 +08:00
committed by GitHub
parent d28c551bd2
commit d7d98d03ca
117 changed files with 14937 additions and 565 deletions
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79
tools/sdk/libc/xtensa-lx106-elf/include/stdio_ext.h Normal file
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/*
* stdio_ext.h
*
* Definitions for I/O internal operations, originally from Solaris.
*/
#ifndef _STDIO_EXT_H_
#define _STDIO_EXT_H_
#ifdef __rtems__
#error "<stdio_ext.h> not supported"
#endif
#include <stdio.h>
#define FSETLOCKING_QUERY 0
#define FSETLOCKING_INTERNAL 1
#define FSETLOCKING_BYCALLER 2
_BEGIN_STD_C
void _EXFUN(__fpurge,(FILE *));
int _EXFUN(__fsetlocking,(FILE *, int));
/* TODO:
void _flushlbf (void);
*/
#ifdef __GNUC__
_ELIDABLE_INLINE size_t
__fbufsize (FILE *__fp) { return (size_t) __fp->_bf._size; }
_ELIDABLE_INLINE int
__freading (FILE *__fp) { return (__fp->_flags & __SRD) != 0; }
_ELIDABLE_INLINE int
__fwriting (FILE *__fp) { return (__fp->_flags & __SWR) != 0; }
_ELIDABLE_INLINE int
__freadable (FILE *__fp) { return (__fp->_flags & (__SRD | __SRW)) != 0; }
_ELIDABLE_INLINE int
__fwritable (FILE *__fp) { return (__fp->_flags & (__SWR | __SRW)) != 0; }
_ELIDABLE_INLINE int
__flbf (FILE *__fp) { return (__fp->_flags & __SLBF) != 0; }
_ELIDABLE_INLINE size_t
__fpending (FILE *__fp) { return __fp->_p - __fp->_bf._base; }
#else
size_t _EXFUN(__fbufsize,(FILE *));
int _EXFUN(__freading,(FILE *));
int _EXFUN(__fwriting,(FILE *));
int _EXFUN(__freadable,(FILE *));
int _EXFUN(__fwritable,(FILE *));
int _EXFUN(__flbf,(FILE *));
size_t _EXFUN(__fpending,(FILE *));
#ifndef __cplusplus
#define __fbufsize(__fp) ((size_t) (__fp)->_bf._size)
#define __freading(__fp) (((__fp)->_flags & __SRD) != 0)
#define __fwriting(__fp) (((__fp)->_flags & __SWR) != 0)
#define __freadable(__fp) (((__fp)->_flags & (__SRD | __SRW)) != 0)
#define __fwritable(__fp) (((__fp)->_flags & (__SWR | __SRW)) != 0)
#define __flbf(__fp) (((__fp)->_flags & __SLBF) != 0)
#define __fpending(__fp) ((size_t) ((__fp)->_p - (__fp)->_bf._base))
#endif /* __cplusplus */
#endif /* __GNUC__ */
_END_STD_C
#endif /* _STDIO_EXT_H_ */