BITS 64 default rel extern zest_cfi_dispatch_c section .text global zest_cfi_dispatch:function zest_cfi_dispatch: lea rsp, [rsp-128] pushf push rax push rbx push rcx push rdx push rsi push rdi push rbp push r8 push r9 push r10 push r11 push r12 push r13 push r14 push r15 mov rdi, r11 ; r11 is the cfi reg for x86-64, copy it to rdi for C-calling convention. call zest_cfi_dispatch_c wrt ..plt pop r15 pop r14 pop r13 pop r12 pop r11 pop r10 pop r9 pop r8 pop rbp pop rdi pop rsi pop rdx pop rcx pop rbx pop rax popf lea rsp, [rsp+128] ret