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#include <unistd.h>

#include <sys/types.h>

#include <errno.h>

#include <sys/syscall.h>

#define __syscall_clobbers \

        "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"

#define __syscall_return(type) \

        return (__sc_err & 0x10000000 ? errno = __sc_ret, __sc_ret = -1 : 0), \

               (type) __sc_ret

pid_t vfork(void)

{

        unsigned long __sc_ret, __sc_err;

        register unsigned long __sc_0 __asm__ ("r0");

        register unsigned long __sc_3 __asm__ ("r3");

#if 0

        /* Sigh.  The vfork system call on powerpc

         * seems to be completely broken.  So just

         * use fork instead */

        __sc_0 = __NR_vfork;

        __asm__ __volatile__

                ("sc            \n\t"

                 "mfcr %1       "

                : "=&r" (__sc_3), "=&r" (__sc_0)

                : "0"   (__sc_3), "1"   (__sc_0)

                : __syscall_clobbers);

        __sc_ret = __sc_3;

        __sc_err = __sc_0;

        if((__sc_err & 0x10000000) && (__sc_ret == ENOSYS))

#endif

        {

                __sc_0 = __NR_fork;

                __asm__ __volatile__

                        ("sc            \n\t"

                         "mfcr %1       "

                        : "=&r" (__sc_3), "=&r" (__sc_0)

                        : "0"   (__sc_3), "1"   (__sc_0)

                        : __syscall_clobbers);

                __sc_ret = __sc_3;

                __sc_err = __sc_0;

        }

        __syscall_return (pid_t);

}