gdb_script.py

import os

#def stop_handler(event):
#    print("Stopped at:", gdb.selected_frame().pc())

#gdb.events.stop.connect(stop_handler)

# Set a breakpoint at main
#gdb.Breakpoint("main")

def getSourceLine(filepath, appPath, line):
    actualPath = filepath
    if not os.path.exists(filepath):
        actualPath = os.path.dirname(appPath) + "/" + filepath
    try:
        lines = open(actualPath, "r").readlines()
        content = lines[line]
        return content
    except:
        print("Unable to open", actualPath)
        return ""

# Run the target program
outFile = open("/tmp/gdb_output.txt", "w")
#for i in range(9999999):
for i in range(10):
    gdb.execute("step")
    frame = gdb.selected_frame()
    space = gdb.current_progspace()
    appPath = space.filename
    sal = frame.find_sal()
    if(sal.symtab is None):
        print("<unknown>")
    else:
        try:
            line = sal.line
            filename = sal.symtab.filename
            outFile.write(str(filename) + ":" + str(line) + " ")
            outFile.write(getSourceLine(filename, appPath, line))
            outFile.flush()
        except:
            print("Python error")
            raise

outFile.close()

#print("Stopped at:", gdb.selected_frame())