Add cpsr command

pwndbg/__init__.py

@@ -41,6 +41,7 @@ import pwndbg.commands.aslr
 import pwndbg.commands.misc
 import pwndbg.commands.next
 import pwndbg.commands.dumpargs
+import pwndbg.commands.cpsr
 
 __all__ = [
 'arch',

pwndbg/commands/cpsr.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import gdb
+import pwndbg.arch
+import pwndbg.color
+import pwndbg.commands
+import pwndbg.regs
+
+@pwndbg.commands.Command
+@pwndbg.commands.OnlyWhenRunning
+def cpsr():
+    if pwndbg.arch.current != 'arm':
+        print("This is only available on ARM")
+        return
+
+    cpsr = pwndbg.regs.cpsr
+
+    N = cpsr & (1<<31)
+    Z = cpsr & (1<<30)
+    C = cpsr & (1<<29)
+    V = cpsr & (1<<28)
+
+    bold = pwndbg.color.bold
+
+    result = [
+        bold('N') if N else 'n',
+        bold('Z') if Z else 'z',
+        bold('C') if C else 'c',
+        bold('V') if V else 'v'
+    ]
+    print('cpsr %#x [ %s ]' % (cpsr, ' '.join(result)))