Moved drawing functionality to a new class "TikzPainter".
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6334d183dd
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156
infernal.py
156
infernal.py
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@ -3,23 +3,92 @@ import re
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import sys
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REGISTERS=["%rip","%rbp","%rsp","","%rax","%rdi","%r8","%r9"]
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REG_STATUS_TO_COLOR = {"insert":"green","change":"yellow","remove":"red"}
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REG_STATUS_TO_COLOR = {
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"insert": "green",
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"change": "yellow",
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"remove": "red",
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"none": "black"
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}
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class TikzPainter:
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def __init__ (self, registers=None, max_stack_size=8):
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self.registers = registers if registers else REGISTERS
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self.text = []
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self.pos_x = 0
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self.max_stack_size = max_stack_size
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def addText (self, str, *args):
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self.text.append(str.format(*args))
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def getRegColor (self, reg_state):
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return REG_STATUS_TO_COLOR[reg_state]
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def drawState (self, emu, line_nr=None):
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x = (self.pos_x+1)*2.5-0.5
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self.pos_x += 1
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# Draw register cells
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pos = 0.5
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for reg_name in self.registers:
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pos -= 0.5
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if reg_name =="":
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continue
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reg_state = emu.regState(reg_name)
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reg_dect = "register_node, fill="+self.getRegColor(reg_state)+"!10"
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self.addText("\t\\node[{}]() at ({}, {}){{{}}};\n",
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reg_dect, x, pos, emu.getVal(reg_name))
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# Draw stack
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pos -= 1.5
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base_sp = max(emu.last_sp, emu.getVal('%rsp'))
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if emu.last_sp - 1 == emu.getVal('%rsp'):
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pos += 0.5
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for index in range(base_sp, max(-1, base_sp-self.max_stack_size),-1):
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reg_state = emu.regState("m"+str(index))
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reg_dect = "register_node, fill="+self.getRegColor(reg_state)+"!10"
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self.addText("\t\\node[{}]() at ({}, {}){{{}}};\n",
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reg_dect, x, pos, emu.stack[index])
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pos -= 0.5
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# Draw line signature
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if line_nr == None:
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return
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pos = 2
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signature = emu.getLineSignature(line_nr)
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for token in signature:
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self.addText("\t\\node[text_node]() at ({}, {}){{{}}};\n", x-1.25, pos, token)
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pos -= 0.5
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def drawNames (self, emu):
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x = -1
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pos = 0
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for reg_name in self.registers:
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self.addText("\t\\node[text_node]() at ({}, {}){{{}}};\n", x, pos, reg_name[1:])
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pos -= 0.5
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self.addText("\t\\node[text_node]() at ({}, {}){{TOS+1}};\n", x, pos-0.5)
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self.addText("\t\\node[text_node]() at ({}, {}){{TOS}};\n", x, pos-1.0)
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pos -= 1
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for index in range(1,self.max_stack_size):
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pos -= 0.5
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self.addText("\t\\node[text_node]() at ({}, {}){{TOS-{}}};\n", x, pos, index)
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def __str__ (self):
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return "".join(self.text)
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class Emulator:
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def __init__ (self, source_text):
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self.registers = {}
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for reg_name in REGISTERS:
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self.registers[reg_name] = 0
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self.registers[reg_name] = "Junk"
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self.stack = {}
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self.code = []
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self.codep = []
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self.linesExec = []
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self.labels = {}
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self.changes = {}
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self.status = {}
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self.text = ""
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self.x_coord = 0
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self.last_sp = 0
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self.max_stack_size = 0
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index = 0
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@ -65,82 +134,22 @@ class Emulator:
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tokens = tokens[:i]
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break
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self.code.append(tokens)
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self.codep.append(line_text)
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return index + 1
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def getRegColor (self, reg_name):
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def regState (self, reg_name):
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if reg_name in self.changes:
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return REG_STATUS_TO_COLOR[self.changes[reg_name]]
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return self.changes[reg_name]
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else:
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return "black"
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return "none"
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def getLineSignature (self, line_nr):
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return [ "\\"+token if token[0]=="$" or token[0]=="%" else token for token in self.code[line_nr] ]
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def draw (self, x, line_nr=None):
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x = str(x)
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text = ""
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pos = 0
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for reg_name in REGISTERS:
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reg_dect = "register_node, fill=" + self.getRegColor(reg_name)+"!10"
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if reg_name != "":
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text += "\t\\node["+reg_dect+"]("+reg_name[1:]+") at ("+x+", "+str(pos)+"){"+str(self.registers[reg_name])+"};\n"
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pos -= 0.5
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pos -= 1
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base_sp = max(self.last_sp,self.registers['%rsp'])
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if self.last_sp - 1 == self.registers['%rsp']:
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pos += 0.5
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for index in range(base_sp, -1,-1):
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mem_name = "m"+str(index)
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reg_dect = "register_node, fill=" + self.getRegColor(mem_name)+"!10"
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text += "\t\\node["+reg_dect+"]("+mem_name+") at ("+x+", "+str(pos)+"){"+str(self.stack[index])+"};\n"
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pos -= 0.5
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if line_nr != None:
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pos = 2
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signature = self.getLineSignature(line_nr)
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try:
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for i in range(3):
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text += "\t\\node[text_node]() at ("+str(float(x)-1.25)+", "+str(pos)+"){"+signature[i]+"};\n"
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pos -= 0.5
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except:
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pass
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#for line_nr in self.linesExec:
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# text += "\t\\node[text_node]() at ("+x+", "+str(pos)+"){"+self.codep[line_nr]+"};\n"
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self.linesExec = []
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return text
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def drawRegs (self, line_nr=None):
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self.text += self.draw((self.x_coord+1)*2.5-0.5, line_nr)
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self.text += "\n"
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self.x_coord += 1
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def drawNames (self, x, stack_size=8):
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x = str(x)
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text = ""
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pos = 0
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for reg_name in REGISTERS:
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text += "\t\\node[text_node]("+reg_name[1:]+") at ("+x+", "+str(pos)+"){"+reg_name[1:]+"};\n"
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pos -= 0.5
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text += "\t\\node[text_node]() at ("+x+", "+str(pos-0.5)+"){TOS+1};\n"
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text += "\t\\node[text_node]() at ("+x+", "+str(pos-1)+"){TOS};\n"
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pos -= 1.5
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for index in range(1,stack_size+1):
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mem_name = "m"+str(index)
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text += "\t\\node[text_node]() at ("+x+", "+str(pos)+"){TOS-"+str(index)+"};\n"
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pos -= 0.5
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return text
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def iterate (self):
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old_rip = self.registers['%rip']
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self.last_sp = self.registers['%rsp']
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#self.linesExec.append(old_rip)
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if self.registers['%rip'] >= len(self.code):
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return False
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return None
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instruct = self.code[self.registers['%rip']]
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opcode = instruct[0]
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self.changes = {}
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@ -192,13 +201,14 @@ class Emulator:
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else:
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self.changedRegisters(('%rip',"change"))
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self.drawRegs(old_rip)
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return old_rip
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def __iter__(self):
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return self
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def next(self):
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if self.iterate() == False:
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output = self.iterate()
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if output is None:
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raise StopIteration()
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else:
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return self
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return output
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@ -61,18 +61,19 @@ if __name__ == "__main__":
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# Setup
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emu = infernal.Emulator(fib_prog)
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painter = infernal.TikzPainter()
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emu.setStack("junk...","calling eip")
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emu.setRegs( rip = 0, rbp = 'old bp', rsp = 1, rdi = a )
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emu.drawRegs()
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for emu_ in emu:
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pass
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emu.text += emu.drawNames(0, emu.max_stack_size)
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painter.drawState(emu)
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for line_nr in emu:
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painter.drawState(emu, line_nr)
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painter.drawNames(emu)
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printf("fib({}) = {}", a, emu.registers["%rax"])
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with open("tikz.tex","w") as f:
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f.write("\\documentclass{standalone}\n\n\usepackage{tikz}\\begin{document}\n")
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f.write("\\begin{tikzpicture}["+OPTIONS+"]\n")
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f.write(emu.text)
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f.write(str(painter))
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f.write("\\end{tikzpicture}\n\\end{document}")
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