77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/* Support files for GNU libc. Files in the C namespace go here.
|
|
Files in the system namespace (ie those that start with an underscore)
|
|
go in syscalls.c.
|
|
|
|
Note: These functions are in a seperate file so that OS providers can
|
|
overrride the system call stubs (defined in syscalls.c) without having
|
|
to provide libc funcitons as well. */
|
|
|
|
#include "swi.h"
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef ARM_RDI_MONITOR
|
|
static inline int
|
|
do_AngelSWI (int reason, void * arg)
|
|
{
|
|
int value;
|
|
asm volatile ("mov r0, %1; mov r1, %2; " AngelSWIInsn " %a3; mov %0, r0"
|
|
: "=r" (value) /* Outputs */
|
|
: "r" (reason), "r" (arg), "i" (AngelSWI) /* Inputs */
|
|
: "r0", "r1", "lr"
|
|
/* Clobbers r0 and r1, and lr if in supervisor mode */);
|
|
return value;
|
|
}
|
|
#endif /* ARM_RDI_MONITOR */
|
|
|
|
unsigned __attribute__((weak))
|
|
alarm (unsigned seconds)
|
|
{
|
|
(void)seconds;
|
|
return 0;
|
|
}
|
|
|
|
clock_t _clock(void);
|
|
clock_t __attribute__((weak))
|
|
clock(void)
|
|
{
|
|
return _clock();
|
|
}
|
|
|
|
int _isatty(int fildes);
|
|
int __attribute__((weak))
|
|
isatty(int fildes)
|
|
{
|
|
return _isatty(fildes);
|
|
}
|
|
|
|
int __attribute__((weak))
|
|
pause(void)
|
|
{
|
|
errno = ENOSYS;
|
|
return -1;
|
|
}
|
|
|
|
#include <sys/types.h>
|
|
#include <time.h>
|
|
|
|
unsigned __attribute__((weak))
|
|
sleep(unsigned seconds)
|
|
{
|
|
clock_t t0 = _clock();
|
|
clock_t dt = seconds * CLOCKS_PER_SEC;
|
|
|
|
while (_clock() - t0 < dt);
|
|
return 0;
|
|
}
|
|
|
|
int __attribute__((weak))
|
|
usleep(useconds_t useconds)
|
|
{
|
|
clock_t t0 = _clock();
|
|
clock_t dt = useconds / (1000000/CLOCKS_PER_SEC);
|
|
|
|
while (_clock() - t0 < dt);
|
|
return 0;
|
|
}
|