[pypy-svn] r73570 - pypy/trunk/pypy/jit/tl

[fijal at codespeak.net]

Author: fijal
Date: Thu Apr  8 20:54:19 2010
New Revision: 73570

Added:
   pypy/trunk/pypy/jit/tl/tinyframe.py   (contents, props changed)
Log:
A minimal interpreter description for calling, inlining and frame introspection


Added: pypy/trunk/pypy/jit/tl/tinyframe.py
==============================================================================
--- (empty file)
+++ pypy/trunk/pypy/jit/tl/tinyframe.py	Thu Apr  8 20:54:19 2010
@@ -0,0 +1,28 @@
+
+""" Interpreter for a tiny interpreter with frame introspection. Supports
+integer values and function values. The machine is
+register based with untyped registers.
+
+Opcodes:
+ADD r1, r2 => r3 # integer addition or function combination,
+                 # depending on argument types
+                 # if r1 has a function f and r2 has a function g
+                 # the result will be a function lambda arg : f(g(arg))
+INTROSPECT r1 => r2 # frame introspection - load a register with number
+                    # pointed by r1 (must be int) to r2
+PRINT r # print a register
+CALL r1 r2 # call a function in register one with argument in r2
+LOAD <name> => r # load a function named name into register r
+LOAD <int constant> => r # load an integer constant into register r
+
+function argument always comes in r0
+"""
+
+class Code(object):
+    _immutable_ = True
+
+    def __init__(self, code):
+        code = code
+
+def compile(strrepr):
+    pass