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add support for initializing registers and memories to the functional backend

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This commit is contained in:
Emily Schmidt 2024-07-24 17:37:17 +01:00
parent bdb59ffc8e
commit 99effb6789
10 changed files with 418 additions and 282 deletions
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21
tests/functional/smt_vcd.py
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@ -81,25 +81,6 @@ def simulate_smt_with_smtio(smt_file_path, vcd_path, smt_io, num_steps, rnd):
parser.finish()
assert smt_io.check_sat() == 'sat'
def initial_state(states):
mk_state_parts = []
rv = []
for name, width in states.items():
if isinstance(width, int):
binary_string = format(0, '0{}b'.format(width))
mk_state_parts.append(f"#b{binary_string}")
else:
binary_string = format(0, '0{}b'.format(width[1]))
rv.append(f"(declare-const test_state_initial_mem_{name} (Array (_ BitVec {width[0]}) (_ BitVec {width[1]})))")
rv.append(f"(assert (forall ((i (_ BitVec {width[0]}))) (= (select test_state_initial_mem_{name} i) #b{binary_string})))")
mk_state_parts.append(f"test_state_initial_mem_{name}")
if len(states) == 0:
mk_state_call = "gold_State"
else:
mk_state_call = "(gold_State {})".format(" ".join(mk_state_parts))
rv.append(f"(define-const test_state_step_n0 gold_State {mk_state_call})\n")
return rv
def set_step(inputs, step):
# This function assumes 'inputs' is a dictionary like {"A": 5, "B": 4}
# and 'input_values' is a dictionary like {"A": 5, "B": 13} specifying the concrete values for each input.
@ -118,7 +99,7 @@ def simulate_smt_with_smtio(smt_file_path, vcd_path, smt_io, num_steps, rnd):
f"(define-const test_state_step_n{step+1} gold_State (second test_results_step_n{step}))\n",
]
smt_commands = initial_state(states)
smt_commands = [f"(define-const test_state_step_n0 gold_State gold-initial)\n"]
for step in range(num_steps):
for step_command in set_step(inputs, step):
smt_commands.append(step_command)