Preheat your oven to 350°F (175°C) and grease a round cake pan.
In a large mixing bowl, cream the softened butter and sugar until light and fluffy.
Add the eggs, one at a time, beating well after each addition.
Stir in the vanilla extract.
In another bowl, whisk together the flour, baking powder, baking soda, and salt.
Gradually add the dry ingredients to the wet mixture, alternating with buttermilk.
Fold in the halved cherries gently to avoid crushing them.
Pour the batter into the prepared cake pan and smooth the top.
Bake for 35-40 minutes, or until a toothpick inserted comes out clean.
Let the cake cool in the pan for 10 minutes before transferring it to a wire rack.