T-Kernel Specification (1.B0.02)

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72 CHAPTER 4. T-KERNEL/OS FUNCTIONS tk ena tex tk dis tex Enable Task Exception Disable Task Exception [C Language Interface] ER ercd = tk_ena_tex ( ID tskid, UINT texptn ) ; ER ercd = tk_dis_tex ( ID tskid, UINT texptn ) ; [Parameters] ID tskid Task ID UINT texmask Task exception pattern [Return Parameters] ER ercd Error code [Error Codes] E OK E ID E NOEXS E PAR Normal completion Invalid ID number (tskid is invalid or cannot be used) Object does not exist (the task designated in tskid does not exist or no task exception handler is defined) Parameter error (texptn is invalid or cannot be used) [Description] Enables or disables task exceptions for the task designated in tskid. The parameter texptn is a logical OR bit array representing task exception codes in the form 1
4.3. TASK EXCEPTION HANDLING FUNCTIONS 73 tk ras tex Raise Task Exception [C Language Interface] ER ercd = tk_ras_tex ( ID tskid, INT texcd ) ; [Parameters] ID tskid Task ID INT texcd Task exception code (0 to 31) [Return Parameters] ER ercd Error code [Error Codes] E OK E ID E NOEXS E OBJ E PAR E CTX Normal completion Invalid ID number (tskid is invalid or cannot be used) Object does not exist (the task designated in tskid does not exist or no task exception handler is defined) Invalid object state (called for a task in DORMANT state) Parameter error (texcd is invalid or cannot be used) Context error (issued from task-independent portion or in dispatch disabled state) [Description] Raises the task exception designated in texcd for the task designated in tskid. If a task exception handler is already running in the task designated in tskid, the newly raised task exception is made pending. If an exception is pending, a break function is not executed even if the target task is executing an extended SVC. In the case of texcd = 0, however, exceptions are not made pending even if the target task is executing an exception handler. If the target task is running a task exception handler for an exception of task exception codes 1 to 31, the task exception is accepted; and if an extended SVC is executing, a break function is called. If the target task is running a task exception handler for an exception of task exception code 0, task exceptions are ignored. The invoking task can be designated by setting tskid = TSK SELF = 0. If this system call is issued from a task-independent portion, error code E CTX is returned. [Additional Notes] If the target task is executing an extended SVC, the break handler or the extended SVC runs in the context that called tk ras tex. In such a case tk ras tex does not return control until the break function processing ends. Task exceptions raised in the task that called tk ras tex while the break function is running are held until the break function ends. Copyright c○ 2002, 2003 by T-Engine Forum T-<strong>Kernel</strong> <strong>1.B0.02</strong>
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T-Kernel Specification T-Kernel 1.B
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Contents 1 T-Kernel Overview 1 1.1
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CONTENTS v tk set flg (Set Event Fl
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CONTENTS vii 5.2.2 Address Space Ch
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CONTENTS ix td cal que (Reference Q
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List of Figures 1.1 Position of T-K
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List of Tables 2.1 State Transition
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System Call Notation In the parts o
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Index of T-Kernel/OS System Calls T
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INDEX OF T-KERNEL/OS SYSTEM CALLS x
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Index of T-Kernel/SM Extended SVC L
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Index of T-Kernel/DS System Calls T
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Chapter 1 T-Kernel Overview 1.1 Pos
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1.2. SCALABILITY 3 • Middleware m
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Chapter 2 Concepts Underlying the T
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2.2. TASK STATES AND SCHEDULING RUL
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2.2. TASK STATES AND SCHEDULING RUL
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2.3. INTERRUPT HANDLING 11 preceden
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2.5. SYSTEM STATES 13 Transient sta
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2.7. MEMORY 15 which the upper and
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Chapter 3 Common T-Kernel Specifica
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3.2. SYSTEM CALLS 19 /* * Common co
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4.5. EXTENDED SYNCHRONIZATION AND C
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4.6. MEMORY POOL MANAGEMENT FUNCTIO
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4.7. TIME MANAGEMENT FUNCTIONS 163
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4.8. INTERRUPT MANAGEMENT FUNCTIONS
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4.9. SYSTEM MANAGEMENT FUNCTIONS 19
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4.10. SUBSYSTEM MANAGEMENT FUNCTION
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Chapter 5 T-Kernel/SM Details of th
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5.1. SYSTEM MEMORY MANAGEMENT FUNCT
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5.2. ADDRESS SPACE MANAGEMENT FUNCT
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5.2. ADDRESS SPACE MANAGEMENT FUNCT
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5.3. DEVICE MANAGEMENT FUNCTIONS 22
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5.5. IO PORT ACCESS SUPPORT FUNCTIO
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5.7. SYSTEM CONFIGURATION INFORMATI
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5.7. SYSTEM CONFIGURATION INFORMATI
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5.8. SUBSYSTEM AND DEVICE DRIVER ST
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260 CHAPTER 6. T-KERNEL/DS FUNCTION
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284 CHAPTER 7. REFERENCE INT tevptn
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286 CHAPTER 7. REFERENCE ER ercd =
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288 CHAPTER 7. REFERENCE INT ct = t
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290 CHAPTER 7. REFERENCE E OACV ERC
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T-Kernel Specification (1.B0.02)

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