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implemented instruction j, added cpu cycle counter

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This commit is contained in:
Anton Lydike 2021-04-17 23:08:09 +02:00
parent 97d86108e8
commit 5bdd866472
1 changed files with 6 additions and 1 deletions
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7
riscemu/CPU.py
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@ -17,6 +17,7 @@ class CPU:
def __init__(self, conf: RunConfig):
from . import MMU
self.pc = 0
self.cycle = 0
self.exit = False
self.exit_code = 0
self.conf = conf
@ -42,6 +43,7 @@ class CPU:
ins = None
try:
while not self.exit:
self.cycle += 1
ins = self.mmu.read_ins(self.pc)
self.pc += 1
self.__run_instruction(ins)
@ -140,6 +142,7 @@ class CPU:
)
def instruction_sub(self, ins: 'LoadedInstruction'):
INS_NOT_IMPLEMENTED(ins)
def instruction_lui(self, ins: 'LoadedInstruction'):
@ -227,7 +230,9 @@ class CPU:
self.pc = dest
def instruction_j(self, ins: 'LoadedInstruction'):
INS_NOT_IMPLEMENTED(ins)
ASSERT_LEN(ins.args, 1)
addr = ins.get_imm(0)
self.pc = addr
def instruction_jr(self, ins: 'LoadedInstruction'):
INS_NOT_IMPLEMENTED(ins)