neorv32_rte.h File Reference

NEORV32 Runtime Environment. More...

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Macros
#define	NEORV32_RTE_NUM_TRAPS   29

Enumerations
enum	NEORV32_RTE_TRAP_enum {   RTE_TRAP_I_MISALIGNED = 0 , RTE_TRAP_I_ACCESS = 1 , RTE_TRAP_I_ILLEGAL = 2 , RTE_TRAP_BREAKPOINT = 3 ,   RTE_TRAP_L_MISALIGNED = 4 , RTE_TRAP_L_ACCESS = 5 , RTE_TRAP_S_MISALIGNED = 6 , RTE_TRAP_S_ACCESS = 7 ,   RTE_TRAP_UENV_CALL = 8 , RTE_TRAP_MENV_CALL = 9 , RTE_TRAP_MSI = 10 , RTE_TRAP_MTI = 11 ,   RTE_TRAP_MEI = 12 , RTE_TRAP_FIRQ_0 = 13 , RTE_TRAP_FIRQ_1 = 14 , RTE_TRAP_FIRQ_2 = 15 ,   RTE_TRAP_FIRQ_3 = 16 , RTE_TRAP_FIRQ_4 = 17 , RTE_TRAP_FIRQ_5 = 18 , RTE_TRAP_FIRQ_6 = 19 ,   RTE_TRAP_FIRQ_7 = 20 , RTE_TRAP_FIRQ_8 = 21 , RTE_TRAP_FIRQ_9 = 22 , RTE_TRAP_FIRQ_10 = 23 ,   RTE_TRAP_FIRQ_11 = 24 , RTE_TRAP_FIRQ_12 = 25 , RTE_TRAP_FIRQ_13 = 26 , RTE_TRAP_FIRQ_14 = 27 ,   RTE_TRAP_FIRQ_15 = 28 }

Functions
void	neorv32_rte_setup (void)
int	neorv32_rte_exception_install (uint8_t id, void(*handler)(void))
int	neorv32_rte_exception_uninstall (uint8_t id)
void	neorv32_rte_print_hw_config (void)
void	neorv32_rte_print_hw_version (void)
void	neorv32_rte_print_credits (void)
void	neorv32_rte_print_logo (void)
void	neorv32_rte_print_license (void)
uint32_t	neorv32_rte_get_compiler_isa (void)
int	neorv32_rte_check_isa (int silent)

Detailed Description

NEORV32 Runtime Environment.

Macro Definition Documentation

NEORV32_RTE_NUM_TRAPS

#define NEORV32_RTE_NUM_TRAPS   29

NEORV32 runtime environment: Number of available traps.

Enumeration Type Documentation

NEORV32_RTE_TRAP_enum

enum NEORV32_RTE_TRAP_enum

NEORV32 runtime environment trap IDs.

Enumerator
RTE_TRAP_I_MISALIGNED	Instruction address misaligned
RTE_TRAP_I_ACCESS	Instruction (bus) access fault
RTE_TRAP_I_ILLEGAL	Illegal instruction
RTE_TRAP_BREAKPOINT	Breakpoint (EBREAK instruction)
RTE_TRAP_L_MISALIGNED	Load address misaligned
RTE_TRAP_L_ACCESS	Load (bus) access fault
RTE_TRAP_S_MISALIGNED	Store address misaligned
RTE_TRAP_S_ACCESS	Store (bus) access fault
RTE_TRAP_UENV_CALL	Environment call from user mode (ECALL instruction)
RTE_TRAP_MENV_CALL	Environment call from machine mode (ECALL instruction)
RTE_TRAP_MSI	Machine software interrupt
RTE_TRAP_MTI	Machine timer interrupt
RTE_TRAP_MEI	Machine external interrupt
RTE_TRAP_FIRQ_0	Fast interrupt channel 0
RTE_TRAP_FIRQ_1	Fast interrupt channel 1
RTE_TRAP_FIRQ_2	Fast interrupt channel 2
RTE_TRAP_FIRQ_3	Fast interrupt channel 3
RTE_TRAP_FIRQ_4	Fast interrupt channel 4
RTE_TRAP_FIRQ_5	Fast interrupt channel 5
RTE_TRAP_FIRQ_6	Fast interrupt channel 6
RTE_TRAP_FIRQ_7	Fast interrupt channel 7
RTE_TRAP_FIRQ_8	Fast interrupt channel 8
RTE_TRAP_FIRQ_9	Fast interrupt channel 9
RTE_TRAP_FIRQ_10	Fast interrupt channel 10
RTE_TRAP_FIRQ_11	Fast interrupt channel 11
RTE_TRAP_FIRQ_12	Fast interrupt channel 12
RTE_TRAP_FIRQ_13	Fast interrupt channel 13
RTE_TRAP_FIRQ_14	Fast interrupt channel 14
RTE_TRAP_FIRQ_15	Fast interrupt channel 15

Function Documentation

neorv32_rte_check_isa()

int neorv32_rte_check_isa

(

int

silent

)

NEORV32 runtime environment: Check required ISA extensions (via compiler flags) against available ISA extensions (via MISA csr).

Parameters

[in]

silent

Show error message (via neorv32.uart) if isa_sw > isa_hw when = 0.

Returns

MISA content according to compiler configuration.

neorv32_rte_exception_install()

int neorv32_rte_exception_install	(	uint8_t	id,
		void(*)(void)	handler
	)

Install exception handler function to NEORV32 runtime environment.

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) and the global interrupt enable bit mstatus.mie via neorv32_cpu_eint(void).

Parameters

[in]	id	Identifier (type) of the targeted exception. See NEORV32_RTE_TRAP_enum.
[in]	handler	The actual handler function for the specified exception (function MUST be of type "void function(void);").

Returns

0 if success, 1 if error (invalid id or targeted exception not supported).

neorv32_rte_exception_uninstall()

int neorv32_rte_exception_uninstall

(

uint8_t

id

)

Uninstall exception handler function from NEORV32 runtime environment, which was previously installed via neorv32_rte_exception_install(uint8_t id, void (*handler)(void)).

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) and/or the global interrupt enable bit mstatus.mie via neorv32_cpu_dint(void).

Parameters

[in]

id

Identifier (type) of the targeted exception. See NEORV32_RTE_TRAP_enum.

Returns

0 if success, 1 if error (invalid id or targeted exception not supported).

neorv32_rte_get_compiler_isa()

uint32_t neorv32_rte_get_compiler_isa

(

void

)

NEORV32 runtime environment: Get MISA CSR value according to compiler/toolchain configuration.

Returns

MISA content according to compiler configuration.

neorv32_rte_print_credits()

void neorv32_rte_print_credits

(

void

)

NEORV32 runtime environment: Print project credits

neorv32_rte_print_hw_config()

void neorv32_rte_print_hw_config

(

void

)

NEORV32 runtime environment: Print hardware configuration information via UART

neorv32_rte_print_hw_version()

void neorv32_rte_print_hw_version

(

void

)

NEORV32 runtime environment: Print the processor version in human-readable format.

neorv32_rte_print_license()

void neorv32_rte_print_license

(

void

)

NEORV32 runtime environment: Print project license

neorv32_rte_print_logo()

void neorv32_rte_print_logo

(

void

)

NEORV32 runtime environment: Print project logo

neorv32_rte_setup()

void neorv32_rte_setup

(

void

)

Setup NEORV32 runtime environment.

Note

This function installs a debug handler for ALL exception and interrupt sources, which gives detailed information about the exception/interrupt. Actual handler can be installed afterwards via neorv32_rte_exception_install(uint8_t id, void (*handler)(void)).