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)
void	neorv32_rte_core (void)
int	neorv32_rte_handler_install (int id, void(*handler)(void))
void	neorv32_rte_debug_handler (void)
uint32_t	neorv32_rte_context_get (int x)
void	neorv32_rte_context_put (int x, uint32_t data)
#define	NEORV32_RTE_NUM_TRAPS   29
enum	NEORV32_RTE_TRAP_enum {   RTE_TRAP_I_ACCESS = 0 , RTE_TRAP_I_ILLEGAL = 1 , RTE_TRAP_I_MISALIGNED = 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 }

Detailed Description

NEORV32 Runtime Environment.

See also

https://stnolting.github.io/neorv32/sw/files.html

Macro Definition Documentation

NEORV32_RTE_NUM_TRAPS

#define NEORV32_RTE_NUM_TRAPS   29

NEORV32 runtime environment trap IDs. < Trap ID enumeration

Enumeration Type Documentation

NEORV32_RTE_TRAP_enum

enum NEORV32_RTE_TRAP_enum

NEORV32 runtime environment trap IDs. < Trap ID enumeration

Enumerator
RTE_TRAP_I_ACCESS	Instruction access fault
RTE_TRAP_I_ILLEGAL	Illegal instruction
RTE_TRAP_I_MISALIGNED	Instruction address misaligned
RTE_TRAP_BREAKPOINT	Breakpoint (EBREAK instruction)
RTE_TRAP_L_MISALIGNED	Load address misaligned
RTE_TRAP_L_ACCESS	Load access fault
RTE_TRAP_S_MISALIGNED	Store address misaligned
RTE_TRAP_S_ACCESS	Store 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_context_get()

uint32_t neorv32_rte_context_get

(

int

x

)

NEORV32 runtime environment (RTE): 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 )

NEORV32 runtime environment (RTE): 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_core()

void neorv32_rte_core

(

void

)

NEORV32 runtime environment (RTE): This is the core of the NEORV32 RTE (first-level trap handler, executed in machine mode).

neorv32_rte_debug_handler()

void neorv32_rte_debug_handler

(

void

)

NEORV32 runtime environment (RTE): Debug trap handler, printing information via UART0.

Note

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

neorv32_rte_handler_install()

int neorv32_rte_handler_install	(	int	id,
		void(*	handler )(void) )

NEORV32 runtime environment (RTE): 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]	id	Identifier (type) of the targeted trap See NEORV32_RTE_TRAP_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 ID.

neorv32_rte_setup()

void neorv32_rte_setup

(

void

)

NEORV32 runtime environment (RTE): Setup RTE.

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 gives detailed information about the trap via UART0 (if available). Actual handlers can be installed afterwards via neorv32_rte_handler_install().