Commit 404fa87c authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Paul E. McKenney
Browse files

tools/nolibc: s390: provide custom implementation for sys_fork 



On s390 the first two arguments to the clone() syscall are swapped,
as documented in clone(2).

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Cc: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent f2fa6b38

tools/include/nolibc/arch-s390.h

+9 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 


#ifndef _NOLIBC_ARCH_S390_H

#define _NOLIBC_ARCH_S390_H

#include <asm/signal.h>

#include <asm/unistd.h>



/* The struct returned by the stat() syscall, equivalent to stat64(). The
@@ -223,4 +224,12 @@ void *sys_mmap(void *addr, size_t length, int prot, int flags, int fd, 
	return (void *)my_syscall1(__NR_mmap, &args);

}

#define sys_mmap sys_mmap



static __attribute__((unused))

pid_t sys_fork(void)

{

	return my_syscall5(__NR_clone, 0, SIGCHLD, 0, 0, 0);

}

#define sys_fork sys_fork



#endif /* _NOLIBC_ARCH_S390_H */

tools/include/nolibc/sys.h

+2 −0
Original line number Diff line number Diff line
@@ -336,6 +336,7 @@ void exit(int status) 
 * pid_t fork(void);

 */



#ifndef sys_fork

static __attribute__((unused))

pid_t sys_fork(void)

{
@@ -351,6 +352,7 @@ pid_t sys_fork(void) 
#error Neither __NR_clone nor __NR_fork defined, cannot implement sys_fork()

#endif

}

#endif



static __attribute__((unused))

pid_t fork(void)