/* * \brief Dummy pager support for Genode * \author Norman Feske * \date 2009-10-02 */ /* * Copyright (C) 2009-2013 Genode Labs GmbH * * This file is part of the Genode OS framework, which is distributed * under the terms of the GNU General Public License version 2. */ #ifndef _INCLUDE__BASE__IPC_PAGER_H_ #define _INCLUDE__BASE__IPC_PAGER_H_ #include #include #include #include namespace Genode { class Mapping { public: /** * Constructor */ Mapping(addr_t dst_addr, addr_t src_addr, Cache_attribute, bool io_mem, unsigned l2size = 12, bool rw = true) { } /** * Construct invalid mapping */ Mapping() { } /** * Prepare map operation */ void prepare_map_operation() { } }; /** * Special paging server class */ class Ipc_pager : public Native_capability { protected: /** * Wait for short-message (register) IPC -- pagefault */ void _wait() { } /** * Send short flex page and * wait for next short-message (register) IPC -- pagefault */ void _reply_and_wait() { } public: /** * Constructor */ Ipc_pager() { } /** * Wait for a new fault received as short message IPC */ void wait_for_fault() { } /** * Reply current page-fault and wait for a new one * * Send short flex page and wait for next short-message (register) * IPC -- fault */ void reply_and_wait_for_fault() { } /** * Request instruction pointer of current page fault */ addr_t fault_ip() { return 0; } /** * Request fault address of current page fault */ addr_t fault_addr() { return 0; } /** * Set parameters for next reply */ void set_reply_mapping(Mapping m) { } /** * Set destination for next reply */ void set_reply_dst(Native_capability pager_object) { } /** * Answer call without sending a flex-page mapping * * This function is used to acknowledge local calls from one of * core's region-manager sessions. */ void acknowledge_wakeup() { } /** * Return thread ID of last faulter */ Native_thread_id last() const { return 0; } /** * Return badge for faulting thread */ unsigned long badge() const { return 0; } /** * Return true if last fault was a write fault */ bool is_write_fault() const { return false; } /** * Return true if last fault was an exception */ bool is_exception() const { /* * Reflection of exceptions is not supported on this platform. */ return false; } }; } #endif /* _INCLUDE__BASE__IPC_PAGER_H_ */