Zig 0.17.0-dev (Split by item)

This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig library itself.

clone

x86_64.clone

pub fn clone() callconv(.naked) u64

File

lib/std/os/linux/x86_64.zig:112

Code

pub fn clone() callconv(.naked) u64 {
    asm volatile (
        \\      movl $56,%%eax // SYS_clone
        \\      movq %%rdi,%%r11
        \\      movq %%rdx,%%rdi
        \\      movq %%r8,%%rdx
        \\      movq %%r9,%%r8
        \\      movq 8(%%rsp),%%r10
        \\      movq %%r11,%%r9
        \\      andq $-16,%%rsi
        \\      subq $8,%%rsi
        \\      movq %%rcx,(%%rsi)
        \\      syscall
        \\      testq %%rax,%%rax
        \\      jz 1f
        \\      retq
        \\
        \\1:
    );
    if (builtin.unwind_tables != .none or !builtin.strip_debug_info) asm volatile (
        \\      .cfi_undefined %%rip
    );
    asm volatile (
        \\      xorl %%ebp,%%ebp
        \\
        \\      popq %%rdi
        \\      callq *%%r9
        \\      movl %%eax,%%edi
        \\      movl $60,%%eax // SYS_exit
        \\      syscall
        \\
    );
}