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the support for PSE51 (#5534)

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* [add] the function realization of signal for posix.
* [update] the posix support for armclang.
* [add] the new macro "RT_USING_POSIX_TIMER".
* [modify] select "RT_USING_SOFT_TIMER" when use posix'timer.
* [bug] optimize the logic for the "time_xxx" functions.
* [modify] use "RT_USING_POSIX_TIMER" to protect the macro definition.
* [modify] error code when except happened.
* [delete] the "environ" is useless at this time.
This commit is contained in:
xiangxistu
2022-01-20 20:53:47 +08:00
committed by GitHub
parent 4dab5e0e59
commit 075e04e344
12 changed files with 711 additions and 4 deletions
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2
components/libc/compilers/common/extension/sys/types.h
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@@ -28,6 +28,8 @@ typedef signed int ssize_t; /* Used for a count of bytes or an error
#else
typedef long signed int ssize_t; /* Used for a count of bytes or an error indication. */
#endif
typedef unsigned long __timer_t;
typedef __timer_t timer_t;
typedef long suseconds_t; /* microseconds. */
typedef unsigned long useconds_t; /* microseconds (unsigned) */

3
components/libc/compilers/common/extension/sys/unistd.h
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@@ -19,10 +19,13 @@
#define STDOUT_FILENO 1 /* standard output file descriptor */
#define STDERR_FILENO 2 /* standard error file descriptor */
unsigned alarm(unsigned __secs);
ssize_t read(int fd, void *buf, size_t len);
ssize_t write(int fd, const void *buf, size_t len);
off_t lseek(int fd, off_t offset, int whence);
int pause(void);
int fsync(int fildes);
long sysconf(int __name);
int unlink(const char *pathname);
int close(int d);
int ftruncate(int fd, off_t length);