neorv32_rte.c File Reference

NEORV32 Runtime Environment. More...

#include <neorv32.h>

Functions
static void	__neorv32_rte_core (void)
static void	__neorv32_rte_print_hex_word (uint32_t num)
void	neorv32_rte_setup (void)
int	neorv32_rte_handler_install (int id, void(*handler)(void))
int	neorv32_rte_handler_uninstall (int id)
uint32_t	neorv32_rte_context_get (int x)
void	neorv32_rte_context_put (int x, uint32_t data)
void	neorv32_rte_debug_handler (void)
void	neorv32_rte_print_hw_config (void)
void	neorv32_rte_print_hw_version (void)
void	neorv32_rte_print_about (void)
void	neorv32_rte_print_logo (void)
void	neorv32_rte_print_license (void)

Variables
static uint32_t	__neorv32_rte_vector_lut [NEORV32_RTE_NUM_TRAPS]

Detailed Description

NEORV32 Runtime Environment.

See also

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

Function Documentation

__neorv32_rte_core()

static void __neorv32_rte_core ( void )

static

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

__neorv32_rte_print_hex_word()

void __neorv32_rte_print_hex_word ( uint32_t num )

static

NEORV32 runtime environment (RTE): Private function to print 32-bit number as 8-digit hexadecimal value (with "0x" suffix).

Parameters

[in]

num

Number to print as hexadecimal via UART0.

neorv32_rte_context_get()

uint32_t neorv32_rte_context_get

(

int

x

)

NEORV32 runtime environment (RTE): Read register from application context (on stack).

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).

Parameters

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

neorv32_rte_debug_handler()

void neorv32_rte_debug_handler

(

void

)

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

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).

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 error (invalid id or targeted trap not supported).

neorv32_rte_handler_uninstall()

int neorv32_rte_handler_uninstall

(

int

id

)

NEORV32 runtime environment (RTE): Uninstall trap handler function from NEORV32 runtime environment, which was previously installed via neorv32_rte_handler_install(uint8_t id, void (*handler)(void)).

Parameters

[in]

id

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

Returns

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

neorv32_rte_print_about()

void neorv32_rte_print_about

(

void

)

NEORV32 runtime environment (RTE): Print project info via UART0.

neorv32_rte_print_hw_config()

void neorv32_rte_print_hw_config

(

void

)

NEORV32 runtime environment (RTE): Print hardware configuration information via UART0.

Warning

This function overrides several CSR, CNT and HPM CSRs!

neorv32_rte_print_hw_version()

void neorv32_rte_print_hw_version

(

void

)

NEORV32 runtime environment (RTE): Print the processor version in human-readable format via UART0.

neorv32_rte_print_license()

void neorv32_rte_print_license

(

void

)

NEORV32 runtime environment (RTE): Print project license via UART0.

neorv32_rte_print_logo()

void neorv32_rte_print_logo

(

void

)

NEORV32 runtime environment (RTE): Print project logo via UART0.

neorv32_rte_setup()

void neorv32_rte_setup

(

void

)

NEORV32 runtime environment (RTE): Setup RTE.

Note

This function installs a debug handler for ALL trap sources, which gives detailed information about the trap. Actual handlers can be installed afterwards via neorv32_rte_handler_install(uint8_t id, void (*handler)(void)).

Variable Documentation

__neorv32_rte_vector_lut

uint32_t __neorv32_rte_vector_lut[NEORV32_RTE_NUM_TRAPS]

static

NEORV32 runtime environment (RTE): The >private< trap vector look-up table of the NEORV32 RTE.