%
% P-LAMBIND.SL - Portable cmacro definitions *LAMBIND, *PROGBIND and *FREERSTR
%
% Author: Eric Benson
% Symbolic Computation Group
% Computer Science Dept.
% University of Utah
% Date: 6 August 1982
% Copyright (c) 1982 University of Utah
%
(compiletime (load useful))
(imports '(syslisp)) % requires SYSLISP for AddrUnitsPerItem
(de *lambind (regs fluids)
(prog (n firstreg)
(setq n 0)
(setq regs (rest regs)) % remove REGISTERS at the front
(setq fluids (rest fluids)) % remove NONLOCALVARS at the front
(setq fluids % convert fluids list into vector
(list2vector (foreach x in fluids collect (second x))))
(setq firstreg (first regs))
(setq regs (rest regs))
(return (if (null regs) % only one to bind
`((*move ,firstreg (reg 2))
(*move `,',(getv fluids 0) (reg 1))
(*call lbind1))
`((*move ,firstreg (memory (fluid LambindArgs*) (wconst 0)))
(*move (fluid LambindArgs*) ,firstreg)
,@(foreach x in regs collect
(progn (setq n (add1 n))
`(*move ,x
(memory ,firstreg
(wconst (wtimes2 (wconst AddressingUnitsPerItem)
(wconst ,n)))))))
(*move `,',fluids (reg 1))
(*call lambind))))))
(defcmacro *lambind)
(de *progbind (fluids)
(if (null (rest (rest fluids)))
`((*move `,',(second (first (rest fluids))) (reg 1))
(*call pbind1))
`((*move `,',(list2vector (foreach x in (rest fluids) collect
(second x)))
(reg 1))
(*call progbind))))
(defcmacro *progbind)
(de *freerstr (fluids)
`((*move `,',(length (rest fluids)) (reg 1))
(*call UnBindN)))
(defcmacro *freerstr)
(setq *unsafebinder t) % has to save registers across calls