Method push_call

g2all/900/module/chain.js:301–326

(func_addr, ...args)

    }

    push_call(func_addr, ...args) {
        if (args.length > 6) {
            throw TypeError(
                'push_call() does not support functions that have more than 6'
                + ' arguments');
        }

        for (let i = 0; i < args.length; i++) {
            this.push_gadget(argument_pops[i]);
            this.push_value(args[i]);
        }

        // The address of our buffer seems to be always aligned to 8 bytes.
        // SysV calling convention requires the stack is aligned to 16 bytes on
        // function entry, so push an additional 8 bytes to pad the stack. We
        // pushed a "ret" gadget for a noop.
        if ((this.position & (0x10 - 1)) !== 0) {
            this.push_gadget('ret');
        }

        if (typeof func_addr === 'string') {
            this.push_gadget(func_addr);
        } else {
            this.push_value(func_addr);
        }
    }

    push_syscall(syscall_name, ...args) {
        if (typeof syscall_name !== 'string') {