1 /* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */
4 .type __uniclone,@function
5 /* rdi = child_stack, rsi = start, rdx = pthread_struct */
7 subq $8,%rsp /* pad parent stack to prevent branch later */
8 subq $24,%rdi /* grow child_stack */
9 mov %rsi,8(%rdi) /* push start onto child_stack as return ptr */
10 mov %rdx,0(%rdi) /* push pthread_struct onto child_stack */
11 mov %rdx,%r8 /* r8 = tls */
12 mov %rdi,%rsi /* rsi = child_stack */
13 leaq 40(%rdx),%r10 /* r10 = child_id */
14 movl $56,%eax /* clone syscall number */
15 movl $0x7d0f00,%edi /* rdi = flags */
16 mov %r10,%rdx /* rdx = parent_id */
17 syscall /* clone(flags, child_stack, parent_id,
19 pop %rdi /* child stack: restore pthread_struct
20 * parent stack: undo rsp displacement */