Memory access

Requirements

None

Description

This example shows how to run GVSOC with a telnet proxy opened, and how to connect a python script to it to do memory accesses.

Code

PythonC

#!/usr/bin/env python3

import argparse
import gv.gvsoc_control as gvsoc

parser = argparse.ArgumentParser(description='Control GVSOC')

parser.add_argument("--host", dest="host", default="localhost", help="Specify host name")
parser.add_argument("--port", dest="port", default=42951, type=int, help="Specify host port")

args = parser.parse_args()


gv = gvsoc.Proxy(args.host, args.port)

axi = gvsoc.Router(gv)

# Wait 1ms to be sure the ROM has booted since we are writing at beginning of binary
gv.run(500000000000)

# Send a value to the simulated test
axi.mem_write_int(0x1c000000, 4, 0x11223344)

# And wait until it sends back a special value
while True:
    gv.run(1000000000)

    result = axi.mem_read_int(0x1c000000, 4)
    if result == 0x55667788:
        break;

gv.quit()
gv.close()