/usr/include/xenomai/asm-arm/bits/bind.h is in libxenomai-dev 2.5.5.2-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | #ifndef _XENO_ASM_ARM_BIND_H
#define _XENO_ASM_ARM_BIND_H
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <asm-generic/xenomai/bits/bind.h>
#include <asm/xenomai/syscall.h>
__attribute__((weak)) struct __xn_tscinfo __xn_tscinfo = {
type: -1
};
static inline void xeno_arm_features_check(void)
{
#ifdef XNARCH_ARM_TSC_TYPE
unsigned page_size;
int err, fd;
void *addr;
if (__xn_tscinfo.type != -1)
return;
err = XENOMAI_SYSCALL2(__xn_sys_arch,
XENOMAI_SYSARCH_TSCINFO, &__xn_tscinfo);
if (err) {
error:
fprintf(stderr, "Xenomai: Your board/configuration does not"
" allow tsc emulation in user-space: %d\n", err);
exit(EXIT_FAILURE);
}
fd = open("/dev/mem", O_RDONLY | O_SYNC);
if (fd == -1) {
perror("Xenomai init: open(/dev/mem)");
exit(EXIT_FAILURE);
}
page_size = sysconf(_SC_PAGESIZE);
switch(__xn_tscinfo.type) {
#if XNARCH_ARM_TSC_TYPE == __XN_TSC_TYPE_FREERUNNING \
|| XNARCH_ARM_TSC_TYPE == __XN_TSC_TYPE_FREERUNNING_COUNTDOWN \
|| XNARCH_ARM_TSC_TYPE == __XN_TSC_TYPE_FREERUNNING_FAST_WRAP
case __XN_TSC_TYPE_FREERUNNING:
case __XN_TSC_TYPE_FREERUNNING_COUNTDOWN: {
unsigned long phys_addr;
phys_addr = (unsigned long) __xn_tscinfo.u.fr.counter;
addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
fd, phys_addr & ~(page_size - 1));
if (addr == MAP_FAILED) {
perror("Xenomai init: mmap(/dev/mem)");
exit(EXIT_FAILURE);
}
__xn_tscinfo.u.fr.counter =
((volatile unsigned *)
((char *) addr + (phys_addr & (page_size - 1))));
#if XNARCH_ARM_TSC_TYPE == __XN_TSC_TYPE_FREERUNNING_FAST_WRAP
if (__xn_tscinfo.u.fr.mask >= ((1 << 28) - 1)) {
fprintf(stderr, "Hardware tsc is not a fast wrapping"
" one, select the correct platform, or fix\n"
"configure.in\n");
exit(EXIT_FAILURE);
}
#endif /* __XN_TSC_TYPE_FREERUNNING_FAST_WRAP */
break;
}
#elif XNARCH_ARM_TSC_TYPE == __XN_TSC_TYPE_DECREMENTER
case __XN_TSC_TYPE_DECREMENTER: {
unsigned long phys_addr;
phys_addr = (unsigned long) __xn_tscinfo.u.dec.counter;
addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
fd, phys_addr & ~(page_size - 1));
if (addr == MAP_FAILED) {
perror("Xenomai init: mmap(/dev/mem)");
exit(EXIT_FAILURE);
}
__xn_tscinfo.u.dec.counter =
((volatile unsigned *)
((char *) addr + (phys_addr & (page_size - 1))));
break;
}
#endif /* XNARCH_ARM_TSC_TYPE == __XN_TSC_TYPE_DECREMENTER */
case __XN_TSC_TYPE_NONE:
goto error;
default:
fprintf(stderr,
"Xenomai: kernel/user tsc emulation mismatch.\n");
exit(EXIT_FAILURE);
}
if (close(fd)) {
perror("Xenomai init: close(/dev/mem)");
exit(EXIT_FAILURE);
}
#endif /* XNARCH_ARM_TSC_TYPE */
}
#define xeno_arch_features_check() xeno_arm_features_check()
#endif /* _XENO_ASM_ARM_BIND_H */
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