neorv32_rte.h File Reference

NEORV32 Runtime Environment. More...

#include <stdint.h>

Go to the source code of this file.

Functions
Prototypes
void	neorv32_rte_setup (void)
int	neorv32_rte_handler_install (uint32_t code, void(*handler)(void))
int	neorv32_rte_handler_uninstall (uint32_t code)
uint32_t	neorv32_rte_context_get (int x)
void	neorv32_rte_context_put (int x, uint32_t data)

Detailed Description

NEORV32 Runtime Environment.

Function Documentation

neorv32_rte_context_get()

uint32_t neorv32_rte_context_get

(

int

x

)

Read register from application context (on stack).

Note

This function operates on the RTE instance of the core on which this function is executed.

Parameters

[in]

x

Register number (0..31, corresponds to register x0..x31).

Returns

Content of register x.

neorv32_rte_context_put()

void neorv32_rte_context_put	(	int	x,
		uint32_t	data )

Write register to application context (on stack).

Note

This function operates on the RTE instance of the core on which this function is executed.

Parameters

[in]	x	Register number (0..31, corresponds to register x0..x31).
[in]	data	Data to be written to register x.

neorv32_rte_handler_install()

int neorv32_rte_handler_install	(	uint32_t	code,
		void(*	handler )(void) )

Install trap handler function (second-level trap handler).

Note

Trap handler installation applies to both cores. Hence, both cores will execute the same handler for the same trap.

Parameters

[in]	code	Trap code (MCAUSE CSR value) of the targeted trap. See NEORV32_EXCEPTION_CODES_enum.
[in]	handler	The actual handler function for the specified trap (function must be of type "void function(void);").

Returns

0 if success, -1 if invalid trap code.

neorv32_rte_handler_uninstall()

int neorv32_rte_handler_uninstall

(

uint32_t

code

)

Uninstall trap handler (second-level trap handler) and restore original debug handler.

Note

Trap handler installation applies to both cores. Hence, both cores will execute the same handler for the same trap.

Parameters

[in]

code

Trap code (MCAUSE CSR value) of the targeted trap. See NEORV32_EXCEPTION_CODES_enum.

Returns

0 if success, -1 if invalid trap code.

neorv32_rte_setup()

void neorv32_rte_setup

(

void

)

Setup NEORV32 runtime environment.

Note

This function must be called on all cores that wish to use the RTE.

This function installs a debug handler for ALL trap sources, which prints detailed information about the trap. Actual handlers can be installed afterwards via neorv32_rte_handler_install().