main.c File Reference

Test program for the NEORV32 'A' ISA extension - check the emulation of the AMO (read-modify-write) operations. More...

#include <neorv32.h>

Functions
int	main ()

User configuration
#define	BAUD_RATE   (19200)
#define	NUM_TEST_CASES   (10000)
#define	SILENT_MODE   (1)
volatile uint32_t	amo_var
uint32_t	xorshift32 (void)
uint32_t	check_result (uint32_t num, uint32_t amo_var_old, uint32_t amo_var_pre, uint32_t amo_var_new, uint32_t amo_var)
void	print_report (int num_err, int num_tests)
static int32_t	MAX (int32_t a, int32_t b)
static int32_t	MIN (int32_t a, int32_t b)
static int32_t	MAXU (uint32_t a, uint32_t b)
static int32_t	MINU (uint32_t a, uint32_t b)

Detailed Description

Test program for the NEORV32 'A' ISA extension - check the emulation of the AMO (read-modify-write) operations.

Author

Stephan Nolting

Macro Definition Documentation

BAUD_RATE

#define BAUD_RATE   (19200)

UART BAUD rate

NUM_TEST_CASES

#define NUM_TEST_CASES   (10000)

UART BAUD rate

SILENT_MODE

#define SILENT_MODE   (1)

UART BAUD rate

Function Documentation

check_result()

uint32_t check_result	(	uint32_t	num,
		uint32_t	amo_var_old,
		uint32_t	amo_var_pre,
		uint32_t	amo_var_new,
		uint32_t	amo_var )

Check results (reference (SW) vs actual hardware).

Parameters

[in]	num	Test case number
[in]	amo_var_old	Initial value of atomic variable.
[in]	amo_var_pre	Value of atomic variable read from memory (before operation).
[in]	amo_var_new	Expected new value of atomic variable.
[in]	amo_var	Actual new value of atomic variable.

Returns

zero if results are correct.

main()

int main

(

void

)

Main function; test all provided AMO emulation functions.

Note

This program requires the RISC-V A CPU extension.

Returns

Irrelevant.

MAX()

static int32_t MAX ( int32_t a, int32_t b )

inlinestatic

MIN/MAX helpers.

MAXU()

static int32_t MAXU ( uint32_t a, uint32_t b )

inlinestatic

UART BAUD rate

MIN()

static int32_t MIN ( int32_t a, int32_t b )

inlinestatic

UART BAUD rate

MINU()

static int32_t MINU ( uint32_t a, uint32_t b )

inlinestatic

UART BAUD rate

print_report()

void print_report	(	int	num_err,
		int	num_tests )

Print test report.

Parameters

[in]	num_err	Number or errors in this test.
[in]	num_tests	Total number of conducted tests.

xorshift32()

uint32_t xorshift32

(

void

)

Pseudo-Random Number Generator (to generate deterministic test vectors).

Returns

Random data (32-bit).

Simple pseudo random number generator.

Returns

Random number.

PSEUDO-RANDOM number generator.

Returns

Random data (32-bit).

Variable Documentation

amo_var

volatile uint32_t amo_var

UART BAUD rate