syscall test

1 files changed, 11 insertions, 2 deletions

diff --git a/asm/ffi.py b/asm/ffi.py
index 3442171..54a47dc 100644
--- a/asm/ffi.py
+++ b/asm/ffi.py
@@ -89,7 +89,7 @@ class Environment:
 			return creole.from_2c(self.cenv.reg[reg])
 		else:
 			return self.cenv.reg[reg]
-	def getstk(self, stk):
+	def getstk(self, stk, signed=False):
 		""" Get the value at the stack position.
 
 		:param reg: Register number.
@@ -98,7 +98,16 @@ class Environment:
 		"""
 		if stk >= self.cenv.stklen or stk < 0:
 			raise StackOverflowError(r)
-		return creole.from_2c(self.cenv.stk[stk])
+		if signed:
+			return creole.from_2c(self.cenv.stk[stk])
+		else:
+			return self.cenv.stk[stk]
+
+	def pop(self):
+		if stk == 0:
+			return None
+		stk = stk - 1
+		return self.cenv.stk[stk]
 
 	def __init__(self, prog=None, reglen=32, lablen=32, stklen=4096, prglen=4096):
 		cenv = CEnv()