2 * (c) 2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
3 * Alexander Warg <warg@os.inf.tu-dresden.de>
4 * economic rights: Technische Universität Dresden (Germany)
6 * This file is part of TUD:OS and distributed under the terms of the
7 * GNU General Public License 2.
8 * Please see the COPYING-GPL-2 file for details.
10 * As a special exception, you may use this file as part of a free software
11 * library without restriction. Specifically, if other files instantiate
12 * templates or use macros or inline functions from this file, or you compile
13 * this file and link it with other files to produce an executable, this
14 * file does not by itself cause the resulting executable to be covered by
15 * the GNU General Public License. This exception does not however
16 * invalidate any other reasons why the executable file might be covered by
17 * the GNU General Public License.
21 #include <l4/sys/types.h>
22 #include <l4/sys/__vcpu-arch.h>
25 * \defgroup l4_vcpu_api vCPU API
26 * \ingroup l4_thread_api
31 * \brief State of a vCPU
32 * \ingroup l4_vcpu_api
34 typedef struct l4_vcpu_state_t
36 l4_vcpu_regs_t r; ///< Register state
37 l4_vcpu_ipc_regs_t i; ///< IPC state
39 l4_uint16_t state; ///< Current vCPU state
40 l4_uint16_t saved_state; ///< Saved vCPU state
41 l4_uint16_t sticky_flags; ///< Pending flags
42 l4_uint16_t _reserved; ///< \internal
44 l4_cap_idx_t user_task; ///< User task to use
46 l4_umword_t entry_sp; ///< Stack pointer for entry (when coming from user task)
47 l4_umword_t entry_ip; ///< IP for entry
48 l4_umword_t reserved_sp; ///< \internal
49 l4_vcpu_arch_state_t arch_state;
53 * \brief State flags of a vCPU
54 * \ingroup l4_vcpu_api
56 enum L4_vcpu_state_flags
58 L4_VCPU_F_IRQ = 0x01, ///< IRQs (events) enabled
59 L4_VCPU_F_PAGE_FAULTS = 0x02, ///< Page faults enabled
60 L4_VCPU_F_EXCEPTIONS = 0x04, ///< Exception enabled
61 L4_VCPU_F_DEBUG_EXC = 0x08, ///< Debug exception enabled
62 L4_VCPU_F_USER_MODE = 0x20, ///< User task will be used
63 L4_VCPU_F_FPU_ENABLED = 0x80, ///< FPU enabled
67 * \brief Sticky flags of a vCPU
68 * \ingroup l4_vcpu_api
70 enum L4_vcpu_sticky_flags
72 L4_VCPU_SF_IRQ_PENDING = 0x01, ///< An event (e.g. IRQ) is pending
76 * \brief Offsets for vCPU state layouts
77 * \ingroup l4_vcpu_api
79 enum L4_vcpu_state_offset
81 L4_VCPU_OFFSET_EXT_STATE = 0x400, ///< Offset where extended state begins
82 L4_VCPU_OFFSET_EXT_INFOS = 0x200, ///< Offset where extended infos begin