1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2016, Linaro Limited 4 * Copyright (c) 2014, STMicroelectronics International N.V. 5 */ 6 7 #ifndef __KERNEL_THREAD_PRIVATE_H 8 #define __KERNEL_THREAD_PRIVATE_H 9 10 #include <util.h> 11 #ifndef __ASSEMBLER__ 12 13 #include <kernel/mutex.h> 14 #include <kernel/thread.h> 15 #include <kernel/thread_private_arch.h> 16 #include <mm/core_mmu.h> 17 #include <mm/pgt_cache.h> 18 19 enum thread_state { 20 THREAD_STATE_FREE, 21 THREAD_STATE_SUSPENDED, 22 THREAD_STATE_ACTIVE, 23 }; 24 25 struct thread_shm_cache_entry { 26 struct mobj *mobj; 27 size_t size; 28 enum thread_shm_type type; 29 enum thread_shm_cache_user user; 30 SLIST_ENTRY(thread_shm_cache_entry) link; 31 }; 32 33 SLIST_HEAD(thread_shm_cache, thread_shm_cache_entry); 34 35 struct thread_ctx { 36 struct thread_ctx_regs regs; 37 enum thread_state state; 38 vaddr_t stack_va_end; 39 uint32_t flags; 40 struct core_mmu_user_map user_map; 41 bool have_user_map; 42 #ifdef ARM64 43 vaddr_t kern_sp; /* Saved kernel SP during user TA execution */ 44 #endif 45 #ifdef CFG_WITH_VFP 46 struct thread_vfp_state vfp_state; 47 #endif 48 void *rpc_arg; 49 struct mobj *rpc_mobj; 50 struct thread_shm_cache shm_cache; 51 struct thread_specific_data tsd; 52 }; 53 #endif /*__ASSEMBLER__*/ 54 55 /* Describes the flags field of struct thread_core_local */ 56 #define THREAD_CLF_SAVED_SHIFT 4 57 #define THREAD_CLF_CURR_SHIFT 0 58 #define THREAD_CLF_MASK 0xf 59 #define THREAD_CLF_TMP_SHIFT 0 60 #define THREAD_CLF_ABORT_SHIFT 1 61 #define THREAD_CLF_IRQ_SHIFT 2 62 #define THREAD_CLF_FIQ_SHIFT 3 63 64 #define THREAD_CLF_TMP BIT(THREAD_CLF_TMP_SHIFT) 65 #define THREAD_CLF_ABORT BIT(THREAD_CLF_ABORT_SHIFT) 66 #define THREAD_CLF_IRQ BIT(THREAD_CLF_IRQ_SHIFT) 67 #define THREAD_CLF_FIQ BIT(THREAD_CLF_FIQ_SHIFT) 68 69 #ifndef __ASSEMBLER__ 70 extern const void *stack_tmp_export; 71 extern const uint32_t stack_tmp_stride; 72 extern struct thread_ctx threads[]; 73 extern struct thread_core_local thread_core_local[]; 74 75 #ifdef CFG_WITH_STACK_CANARIES 76 #define STACK_CANARY_SIZE (4 * sizeof(long)) 77 #else 78 #define STACK_CANARY_SIZE 0 79 #endif 80 81 /* Checks stack canaries */ 82 void thread_check_canaries(void); 83 84 void thread_lock_global(void); 85 void thread_unlock_global(void); 86 87 /* Frees the cache of allocated FS RPC memory */ 88 void thread_rpc_shm_cache_clear(struct thread_shm_cache *cache); 89 #endif /*__ASSEMBLER__*/ 90 #endif /*__KERNEL_THREAD_PRIVATE_H*/ 91