M1 Mac execve.s

execve.s

        .global _main
        .p2align 4

_main:
        adr x0, shell
        mov x1, 0
        mov x2, 0
        mov x16,#0x3b
        svc #0x80
        ret

shell:
        .asciz "/bin/sh"

$ clang test.s -o test.out
$ ./test.out

The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
bash-3.2$