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#include <errno.h>
#include <sys/types.h>
#include <linux/unistd.h>
struct mmap_arg_struct {
unsigned long addr;
unsigned long len;
unsigned long prot;
unsigned long flags;
unsigned long fd;
unsigned long offset;
};
#ifndef __s390x__
void *__mmap2(void *addr, size_t len, int prot, int flags, int fd, long offset)
{
struct mmap_arg_struct args = {
.addr = (unsigned long)addr,
.len = (unsigned long)len,
.prot = (unsigned long)prot,
.flags = (unsigned long)flags,
.fd = (unsigned long)fd,
.offset = (unsigned long)offset,
};
register struct mmap_arg_struct *__arg1 asm("2") = &args;
register long __svcres asm("2");
unsigned long __res;
__asm__ __volatile__(" svc %b1\n"
: "=d"(__svcres)
: "i"(__NR_mmap2), "0"(__arg1)
: "1", "cc", "memory");
__res = __svcres;
if (__res >= (unsigned long)-4095) {
errno = -__res;
__res = -1;
}
return (void *)__res;
}
#else /* __s390x__ */
void *mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
{
struct mmap_arg_struct args = {
.addr = (unsigned long)addr,
.len = (unsigned long)len,
.prot = (unsigned long)prot,
.flags = (unsigned long)flags,
.fd = (unsigned long)fd,
.offset = (unsigned long)offset,
};
register struct mmap_arg_struct *__arg1 asm("2") = &args;
register long __svcres asm("2");
unsigned long __res;
__asm__ __volatile__ (
" svc %1\n"
: "=d" (__svcres)
: "i" (__NR_mmap),
"0" (__arg1)
: "1", "cc", "memory");
__res = __svcres;
if (__res >= (unsigned long)-4095) {
errno = -__res;
__res = -1;
}
return (void *)__res;
}
#endif /* __s390x__ */
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