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Line 75... |
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/**********************************************************************//**
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/**********************************************************************//**
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* Install exception handler function to NEORV32 runtime environment.
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* Install exception handler function to NEORV32 runtime environment.
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*
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*
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* @note This function automatically activates the according CSR.mie bits when installing handlers for
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* @note Interrupt sources have to be explicitly enabled by the user via the CSR.mie bits via neorv32_cpu_irq_enable(uint8_t irq_sel)
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* the MTIME (MTI), CLIC (MEI), machine software interrupt (MSI) or a fast IRQ. The global interrupt enable bit mstatus.mie has
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* and the global interrupt enable bit mstatus.mie via neorv32_cpu_eint(void).
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* to be set by the user via neorv32_cpu_eint(void).
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*
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*
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* @param[in] id Identifier (type) of the targeted exception. See #NEORV32_RTE_TRAP_enum.
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* @param[in] id Identifier (type) of the targeted exception. See #NEORV32_RTE_TRAP_enum.
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* @param[in] handler The actual handler function for the specified exception (function MUST be of type "void function(void);").
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* @param[in] handler The actual handler function for the specified exception (function MUST be of type "void function(void);").
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* return 0 if success, 1 if error (invalid id or targeted exception not supported).
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* return 0 if success, 1 if error (invalid id or targeted exception not supported).
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**************************************************************************/
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**************************************************************************/
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| Line 92... |
Line 91... |
(id == RTE_TRAP_BREAKPOINT) || (id == RTE_TRAP_L_MISALIGNED) || (id == RTE_TRAP_L_ACCESS) ||
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(id == RTE_TRAP_BREAKPOINT) || (id == RTE_TRAP_L_MISALIGNED) || (id == RTE_TRAP_L_ACCESS) ||
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(id == RTE_TRAP_S_MISALIGNED) || (id == RTE_TRAP_S_ACCESS) || (id == RTE_TRAP_MENV_CALL) ||
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(id == RTE_TRAP_S_MISALIGNED) || (id == RTE_TRAP_S_ACCESS) || (id == RTE_TRAP_MENV_CALL) ||
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(id == RTE_TRAP_MSI) || (id == RTE_TRAP_MTI) || (id == RTE_TRAP_MEI) ||
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(id == RTE_TRAP_MSI) || (id == RTE_TRAP_MTI) || (id == RTE_TRAP_MEI) ||
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(id == RTE_TRAP_FIRQ_0) || (id == RTE_TRAP_FIRQ_1) || (id == RTE_TRAP_FIRQ_2) || (id == RTE_TRAP_FIRQ_3)) {
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(id == RTE_TRAP_FIRQ_0) || (id == RTE_TRAP_FIRQ_1) || (id == RTE_TRAP_FIRQ_2) || (id == RTE_TRAP_FIRQ_3)) {
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if (id == RTE_TRAP_MSI) { neorv32_cpu_irq_enable(CPU_MIE_MSIE); } // activate software interrupt
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if (id == RTE_TRAP_MTI) { neorv32_cpu_irq_enable(CPU_MIE_MTIE); } // activate timer interrupt
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if (id == RTE_TRAP_MEI) { neorv32_cpu_irq_enable(CPU_MIE_MEIE); } // activate external interrupt
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if (id == RTE_TRAP_FIRQ_0) { neorv32_cpu_irq_enable(CPU_MIE_FIRQ0E); } // activate fast interrupt channel 0
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if (id == RTE_TRAP_FIRQ_1) { neorv32_cpu_irq_enable(CPU_MIE_FIRQ1E); } // activate fast interrupt channel 1
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if (id == RTE_TRAP_FIRQ_2) { neorv32_cpu_irq_enable(CPU_MIE_FIRQ2E); } // activate fast interrupt channel 2
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if (id == RTE_TRAP_FIRQ_3) { neorv32_cpu_irq_enable(CPU_MIE_FIRQ3E); } // activate fast interrupt channel 3
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__neorv32_rte_vector_lut[id] = (uint32_t)handler; // install handler
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__neorv32_rte_vector_lut[id] = (uint32_t)handler; // install handler
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return 0;
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return 0;
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}
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}
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return 1;
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return 1;
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Line 103... |
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/**********************************************************************//**
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/**********************************************************************//**
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* Uninstall exception handler function from NEORV32 runtime environment, which was
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* Uninstall exception handler function from NEORV32 runtime environment, which was
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* previously installed via neorv32_rte_exception_install(uint8_t id, void (*handler)(void)).
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* previously installed via neorv32_rte_exception_install(uint8_t id, void (*handler)(void)).
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*
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*
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* @note This function automatically clears the according CSR.mie bits when uninstalling handlers for
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* @note Interrupt sources have to be explicitly disabled by the user via the CSR.mie bits via neorv32_cpu_irq_disable(uint8_t irq_sel)
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* the MTIME (MTI), CLIC (MEI), machine software interrupt (MSI) or fast IRQs. The global interrupt enable bit mstatus.mie has
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* and/or the global interrupt enable bit mstatus.mie via neorv32_cpu_dint(void).
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* to be cleared by the user via neorv32_cpu_dint(void).
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*
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*
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* @param[in] id Identifier (type) of the targeted exception. See #NEORV32_RTE_TRAP_enum.
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* @param[in] id Identifier (type) of the targeted exception. See #NEORV32_RTE_TRAP_enum.
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* return 0 if success, 1 if error (invalid id or targeted exception not supported).
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* return 0 if success, 1 if error (invalid id or targeted exception not supported).
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**************************************************************************/
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**************************************************************************/
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int neorv32_rte_exception_uninstall(uint8_t id) {
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int neorv32_rte_exception_uninstall(uint8_t id) {
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| Line 129... |
Line 118... |
(id == RTE_TRAP_BREAKPOINT) || (id == RTE_TRAP_L_MISALIGNED) || (id == RTE_TRAP_L_ACCESS) ||
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(id == RTE_TRAP_BREAKPOINT) || (id == RTE_TRAP_L_MISALIGNED) || (id == RTE_TRAP_L_ACCESS) ||
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(id == RTE_TRAP_S_MISALIGNED) || (id == RTE_TRAP_S_ACCESS) || (id == RTE_TRAP_MENV_CALL) ||
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(id == RTE_TRAP_S_MISALIGNED) || (id == RTE_TRAP_S_ACCESS) || (id == RTE_TRAP_MENV_CALL) ||
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(id == RTE_TRAP_MSI) || (id == RTE_TRAP_MTI) || (id == RTE_TRAP_MEI) ||
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(id == RTE_TRAP_MSI) || (id == RTE_TRAP_MTI) || (id == RTE_TRAP_MEI) ||
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(id == RTE_TRAP_FIRQ_0) || (id == RTE_TRAP_FIRQ_1) || (id == RTE_TRAP_FIRQ_2) || (id == RTE_TRAP_FIRQ_3)) {
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(id == RTE_TRAP_FIRQ_0) || (id == RTE_TRAP_FIRQ_1) || (id == RTE_TRAP_FIRQ_2) || (id == RTE_TRAP_FIRQ_3)) {
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if (id == RTE_TRAP_MSI) { neorv32_cpu_irq_disable(CPU_MIE_MSIE); } // deactivate software interrupt
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if (id == RTE_TRAP_MTI) { neorv32_cpu_irq_disable(CPU_MIE_MTIE); } // deactivate timer interrupt
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if (id == RTE_TRAP_MEI) { neorv32_cpu_irq_disable(CPU_MIE_MEIE); } // deactivate external interrupt
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if (id == RTE_TRAP_FIRQ_0) { neorv32_cpu_irq_disable(CPU_MIE_FIRQ0E); } // deactivate fast interrupt channel 0
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if (id == RTE_TRAP_FIRQ_1) { neorv32_cpu_irq_disable(CPU_MIE_FIRQ1E); } // deactivate fast interrupt channel 1
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if (id == RTE_TRAP_FIRQ_2) { neorv32_cpu_irq_disable(CPU_MIE_FIRQ2E); } // deactivate fast interrupt channel 2
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if (id == RTE_TRAP_FIRQ_3) { neorv32_cpu_irq_disable(CPU_MIE_FIRQ3E); } // deactivate fast interrupt channel 3
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__neorv32_rte_vector_lut[id] = (uint32_t)(&__neorv32_rte_debug_exc_handler); // use dummy handler in case the exception is accidently triggered
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__neorv32_rte_vector_lut[id] = (uint32_t)(&__neorv32_rte_debug_exc_handler); // use dummy handler in case the exception is accidently triggered
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return 0;
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return 0;
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}
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}
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return 1;
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return 1;
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