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Diffstat (limited to 'ortho/mcode/ortho_code.ads')
| -rw-r--r-- | ortho/mcode/ortho_code.ads | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/ortho/mcode/ortho_code.ads b/ortho/mcode/ortho_code.ads new file mode 100644 index 0000000..404c9be --- /dev/null +++ b/ortho/mcode/ortho_code.ads @@ -0,0 +1,147 @@ +-- Mcode back-end for ortho - common definitions. +-- Copyright (C) 2006 Tristan Gingold +-- +-- GHDL is free software; you can redistribute it and/or modify it under +-- the terms of the GNU General Public License as published by the Free +-- Software Foundation; either version 2, or (at your option) any later +-- version. +-- +-- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY +-- WARRANTY; without even the implied warranty of MERCHANTABILITY or +-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +-- for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with GCC; see the file COPYING. If not, write to the Free +-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA +-- 02111-1307, USA. +with Ada.Unchecked_Conversion; + +package Ortho_Code is + type Int32 is range -(2 ** 31) .. (2 ** 31) - 1; + + type Uns32 is mod 2 ** 32; + + type Uns64 is mod 2 ** 64; + + function Shift_Right (L : Uns64; R : Natural) return Uns64; + function Shift_Right (L : Uns32; R : Natural) return Uns32; + pragma Import (Intrinsic, Shift_Right); + + function Shift_Left (L : Uns32; R : Natural) return Uns32; + pragma Import (Intrinsic, Shift_Left); + + type O_Tnode is new Int32; + for O_Tnode'Size use 32; + O_Tnode_Null : constant O_Tnode := 0; + O_Tnode_First : constant O_Tnode := 2; + + -- A generic pointer. + -- This is used by static chains. + O_Tnode_Ptr : constant O_Tnode := 2; + + type O_Cnode is new Int32; + for O_Cnode'Size use 32; + O_Cnode_Null : constant O_Cnode := 0; + + type O_Dnode is new Int32; + for O_Dnode'Size use 32; + O_Dnode_Null : constant O_Dnode := 0; + O_Dnode_First : constant O_Dnode := 2; + + type O_Enode is new Int32; + for O_Enode'Size use 32; + O_Enode_Null : constant O_Enode := 0; + O_Enode_Err : constant O_Enode := 1; + + type O_Fnode is new Int32; + for O_Fnode'Size use 32; + O_Fnode_Null : constant O_Fnode := 0; + + type O_Lnode is new Int32; + for O_Lnode'Size use 32; + O_Lnode_Null : constant O_Lnode := 0; + + type O_Ident is new Int32; + O_Ident_Nul : constant O_Ident := 0; + + function To_Int32 is new Ada.Unchecked_Conversion + (Source => Uns32, Target => Int32); + + function To_Uns32 is new Ada.Unchecked_Conversion + (Source => Int32, Target => Uns32); + + + -- Specifies the storage kind of a declaration. + -- O_STORAGE_EXTERNAL: + -- The declaration do not either reserve memory nor generate code, and + -- is imported either from an other file or from a later place in the + -- current file. + -- O_STORAGE_PUBLIC, O_STORAGE_PRIVATE: + -- The declaration reserves memory or generates code. + -- With O_STORAGE_PUBLIC, the declaration is exported outside of the + -- file while with O_STORAGE_PRIVATE, the declaration is local to the + -- file. + type O_Storage is (O_Storage_External, + O_Storage_Public, + O_Storage_Private, + O_Storage_Local); + + -- Depth of a declaration. + -- 0 for top-level, + -- 1 for declared in a top-level subprogram + type O_Depth is range 0 .. (2 ** 16) - 1; + O_Toplevel : constant O_Depth := 0; + + -- BE representation of a register. + type O_Reg is mod 256; + R_Nil : constant O_Reg := 0; + + type Mode_Type is (Mode_U8, Mode_U16, Mode_U32, Mode_U64, + Mode_I8, Mode_I16, Mode_I32, Mode_I64, + Mode_X1, Mode_Nil, Mode_F32, Mode_F64, + Mode_B2, Mode_Blk, Mode_P32, Mode_P64); + + subtype Mode_Uns is Mode_Type range Mode_U8 .. Mode_U64; + subtype Mode_Int is Mode_Type range Mode_I8 .. Mode_I64; + subtype Mode_Fp is Mode_Type range Mode_F32 .. Mode_F64; + -- Mode_Ptr : constant Mode_Type := Mode_P32; + + type ON_Op_Kind is + ( + -- Not an operation; invalid. + ON_Nil, + + -- Dyadic operations. + ON_Add_Ov, -- ON_Dyadic_Op_Kind + ON_Sub_Ov, -- ON_Dyadic_Op_Kind + ON_Mul_Ov, -- ON_Dyadic_Op_Kind + ON_Div_Ov, -- ON_Dyadic_Op_Kind + ON_Rem_Ov, -- ON_Dyadic_Op_Kind + ON_Mod_Ov, -- ON_Dyadic_Op_Kind + + -- Binary operations. + ON_And, -- ON_Dyadic_Op_Kind + ON_Or, -- ON_Dyadic_Op_Kind + ON_Xor, -- ON_Dyadic_Op_Kind + + -- Monadic operations. + ON_Not, -- ON_Monadic_Op_Kind + ON_Neg_Ov, -- ON_Monadic_Op_Kind + ON_Abs_Ov, -- ON_Monadic_Op_Kind + + -- Comparaisons + ON_Eq, -- ON_Compare_Op_Kind + ON_Neq, -- ON_Compare_Op_Kind + ON_Le, -- ON_Compare_Op_Kind + ON_Lt, -- ON_Compare_Op_Kind + ON_Ge, -- ON_Compare_Op_Kind + ON_Gt -- ON_Compare_Op_Kind + ); + + subtype ON_Dyadic_Op_Kind is ON_Op_Kind range ON_Add_Ov .. ON_Xor; + subtype ON_Monadic_Op_Kind is ON_Op_Kind range ON_Not .. ON_Abs_Ov; + subtype ON_Compare_Op_Kind is ON_Op_Kind range ON_Eq .. ON_Gt; + + Syntax_Error : exception; +end Ortho_Code; |