63 lines
3.1 KiB
OCaml
63 lines
3.1 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* Automatique. Distributed only by permission. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Selection of pseudo-instructions, assignment of pseudo-registers,
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sequentialization. *)
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type environment = (Ident.t, Reg.t array) Tbl.t
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val size_expr : environment -> Cmm.expression -> int
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class virtual selector_generic : object
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(* The following methods must or can be overriden by the processor
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description *)
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method virtual is_immediate : int -> bool
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(* Must be defined to indicate whether a constant is a suitable
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immediate operand to arithmetic instructions *)
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method virtual select_addressing :
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Cmm.expression -> Arch.addressing_mode * Cmm.expression
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(* Must be defined to select addressing modes *)
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method select_operation :
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Cmm.operation ->
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Cmm.expression list -> Mach.operation * Cmm.expression list
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(* Can be overriden to deal with special arithmetic instructions *)
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method select_condition : Cmm.expression -> Mach.test * Cmm.expression
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(* Can be overriden to deal with special test instructions *)
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method select_store :
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Arch.addressing_mode -> Cmm.expression -> Mach.operation * Cmm.expression
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(* Can be overriden to deal with special store constant instructions *)
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method insert_op :
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Mach.operation -> Reg.t array -> Reg.t array -> Reg.t array
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(* Can be overriden to deal with 2-address instructions
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or instructions with hardwired input/output registers *)
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method emit_extcall_args :
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environment -> Cmm.expression list -> Reg.t array * int
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(* Can be overriden to deal with stack-based calling conventions *)
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(* The following method is the entry point and should not be overriden *)
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method emit_fundecl : Cmm.fundecl -> Mach.fundecl
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(* The following methods should not be overriden. They cannot be
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declared "private" in the current implementation because they
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are not always applied to "self", but ideally they should be private. *)
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method extract : Mach.instruction
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method insert : Mach.instruction_desc -> Reg.t array -> Reg.t array -> unit
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method insert_move : Reg.t -> Reg.t -> unit
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method insert_move_args : Reg.t array -> Reg.t array -> int -> unit
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method insert_move_results : Reg.t array -> Reg.t array -> int -> unit
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method insert_moves : Reg.t array -> Reg.t array -> unit
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method emit_expr :
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(Ident.t, Reg.t array) Tbl.t -> Cmm.expression -> Reg.t array
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method emit_tail : (Ident.t, Reg.t array) Tbl.t -> Cmm.expression -> unit
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end
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