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+ initial revision
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florian
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205
compiler/ia64/cpuasm.pas
Normal file
205
compiler/ia64/cpuasm.pas
Normal file
@ -0,0 +1,205 @@
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{
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$Id$
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Copyright (c) 2000 by Florian Klaempfl
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Contains the assembler object for the ia64
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit cpuasm;
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{$i defines.inc}
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interface
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uses
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cobjects,
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aasm,globals,verbose,
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cpubase;
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type
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pairegalloc = ^tairegalloc;
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tairegalloc = object(tai)
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allocation : boolean;
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reg : tregister;
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constructor alloc(r : tregister);
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constructor dealloc(r : tregister);
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end;
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{ Types of operand }
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toptype=(top_none,top_reg,top_ref,top_const,top_symbol);
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toper=record
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case typ : toptype of
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top_none : ();
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top_reg : (reg:tregister);
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top_qp : (qp : tqp);
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top_ref : (ref:preference);
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top_const : (val:int64);
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top_symbol : (sym:pasmsymbol;symofs:longint);
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end;
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paicpu = ^taicpu;
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taicpu = object(tai)
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is_jmp : boolean; { is this instruction a jump? (needed for optimizer) }
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opcode : tasmop;
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ops : longint;
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ops : array[0..4] of longint;
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oper
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qp : tqp;
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{ ALU instructions }
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{ A1,A9: integer ALU }
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constructor op_reg_reg_reg(op : tasmop;const r1,r2,r3 : tregister);
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{ A2,A10: shift left and add }
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constructor op_reg_reg_const_reg(qp : tqp;op : tasmop;
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const r1,r2 : tregister;i : byte;const r3 : tregister);
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{ A3,A4,A5: integer ALU - imm.,register }
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constructor op_reg_const_reg(qp : tqp;op : tasmop;
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const r1 : tregister;i : longint;const r3 : tregister);
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{ A6,A7: integer compare - register,register }
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constructor op_preg_preg_reg_reg(qp : tqp;op : tasmop;
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cond : tasmcond;p1,p2 : tqp;const r2,r3 : tregister)
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{ A8: integer compare - imm.,register }
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constructor op_preg_preg_const_reg(qp : tqp;op : tasmop;
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cond : tasmcond;p1,p2 : tqp;i : longint;const r3 : tregister);
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{!!!!!!!
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{ multimedia shift and multiply }
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constructor op_reg_reg_reg_const(qp : tqp;
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{ multimedia mux }
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constructor op_reg_reg_mbtype(qp : tqp;
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{ multimedia shift fixed }
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constructor op_reg_reg_const(qp : tqp;
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{ div. }
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constructor op_reg_reg(qp : tqp;
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{ mm extract }
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constructor op_reg_reg_const_const(qp : tqp;
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{ zero and deposit imm }
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constructor op_reg_const_const_const(qp : tqp;
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{ deposit imm }
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constructor op_reg_const_reg_const_const(qp : tqp;
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{ deposit }
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constructor op_reg_reg_reg_const_const(qp : tqp;
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{ test bit }
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{ !!!! here we need also to take care of the postfix }
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constructor op_preg_preg_reg_const(qp : tqp;
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{ test NaT }
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{ !!!! here we need also to take care of the postfix }
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constructor op_preg_preg_reg(qp : tqp;
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{ break/nop }
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constructor op_const(qp : tqp;
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{ speculation check }
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constructor op_reg_const(qp : tqp;
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{ -------- here are some missed ----------- }
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}
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{ M1: integer load }
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{ M4: integer store }
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{ M6: floating-point load }
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{ M9: floating-point store }
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constructor op_reg_ref(qp : tqp;op : tasmop;postfix : tldsttype;
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hint : thint;const r1 : tregister;ref : preference);
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{ M2: integer load incremented by register }
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{ M7: floating-point load incremented by register }
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constructor op_reg_ref_reg(qp : tqp;op : tasmop;postfix : tldsttype;
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hint : thint;const r1 : tregister;const ref : treference;
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const r2 : tregister);
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{ M3: integer load increment by imm. }
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{ M5: integer store increment by imm. }
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{ M8: floating-point load increment by imm. }
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{ M10: floating-point store increment by imm. }
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constructor op_reg_ref_const(qp : tqp;op : tasmop;postfix : tldsttype;
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hint : thint;const r1 : tregister;ref : preference;i : longint);
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{ M11: floating-point load pair}
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constructor op_reg_ref(qp : tqp;op : tasmop;postfix : tldsttype;
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hint : thint;const r1,r2 : tregister;ref : preference);
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{ M12: floating-point load pair increment by imm. }
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constructor op_reg_ref(qp : tqp;op : tasmop;postfix : tldsttype;
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hint : thint;const r1,r2 : tregister;ref : preference;i : longint);
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end;
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{ the following objects are special for the ia64 }
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{ they decribe a stop and the bundles }
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paistop = ^taistop;
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taistop = object(tai)
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constructor init;
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end;
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{ a second underscro indicates a stop }
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tbundletemplate = (but_none,but_mii,but_mii_,
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but_mi_i,but_mi_i_,but_mlx,but_mlx_,
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but_mmi,but_mmi_,but_m_mi,but_m_mi_,
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but_mfi,but_mfi_,but_mmf,but_mmf_,
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but_mif,but_mib_,but_mbb,but_mbb_,
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but_bbb,but_bbb_,but_mmb,but_mmb_,
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but_mfb,but_mfb_);
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paibundle = ^taibundle;
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taibundle = object(tai)
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template : tbundletemplate;
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instructions : array[0..1] of paicpu;
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end;
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implementation
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{*****************************************************************************
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TaiStop
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*****************************************************************************}
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constructor taistop.init;
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begin
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inherited init;
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typ:=ait_stop;
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end;
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{*****************************************************************************
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TaiRegAlloc
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*****************************************************************************}
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constructor tairegalloc.alloc(r : tregister);
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begin
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inherited init;
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typ:=ait_regalloc;
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allocation:=true;
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reg:=r;
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end;
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constructor tairegalloc.dealloc(r : tregister);
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begin
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inherited init;
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typ:=ait_regalloc;
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allocation:=false;
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reg:=r;
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end;
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end.
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{
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$Log$
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Revision 1.1 2000-12-31 16:54:19 florian
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+ initial revision
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}
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279
compiler/ia64/cpubase.pas
Normal file
279
compiler/ia64/cpubase.pas
Normal file
@ -0,0 +1,279 @@
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{
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$Id$
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Copyright (C) 2000 by Florian Klaempfl
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this unit implements an asmlistitem class for the iA-64 architecture
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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||||
(at your option) any later version.
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||||
|
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This program is distributed in the hope that it will be useful,
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||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
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||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit cpubase;
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interface
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uses
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cutils,strings,systems,cobjects,globals,aasm,cpuinfo;
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type
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tasmop = (A_ADD,A_SUB,A_ADDP4,A_AND,A_ANDCM,A_OR,A_XOR,A_SHLADD,
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A_SHLADDP4,A_ADDS,A_ADDL,A_CMP,A_CMP4,A_PADD1,A_PADD2,
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A_PADD4,A_PSUB1,A_PSUB2,A_PSUB4,A_PAVG1,A_PAVG2,A_PAVGSUB1,
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A_PAVGSUB2,A_PCMP1,A_PCMP2,A_PCMP4,A_PSHLADD2,A_PSHRADD2,
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A_PMPY2,A_MIX1,A_MIX2,A_MIX4,A_PACK2,A_PACK4,A_UNPACK2,
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A_UNPACK4,A_PMIN1,A_PMAX1,A_PMIN2,A_PMAX2,A_PSAD1,A_MUX1,
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A_MUX2,A_PSHR2,A_PSHR4,A_SHR,A_PSHL2,A_SHL4,A_SHL,
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A_POPCNT,A_SHRP,A_EXTR,A_DEP,A_TBIT,A_TNAT,A_BREAK,
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A_NOP,A_CHK,A_MOV,A_ZX1,A_ZX2,A_ZXT4,A_SXT1,A_SXT2,A_SXT4,
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A_CXZ1,A_CZX2,A_LD1,A_LD2,A_LD4,A_LD8,A_ST1,A_ST2,A_ST4,
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A_ST8,A_LDFS,A_LDFD,A_LDF8,A_LDFE,A_LDF,A_STFS,A_STFD,A_STF8,
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A_STFE,A_STF,A_LDFPS,A_LDFPD,A_LDFP8,A_LFETCH,A_CMPXCHG1,
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A_CMPXCHG2,A_CMPXHG4,A_CMPXCHG8,A_XCHG1,A_XCHG2,A_XCHG4,
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A_XCHG8,A_FETCHADD4,A_FETCHADD8,A_SETF,A_GETF,
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A_INVALA,A_MF,A_SRLZ,A_SYNC,A_FLUSHRS,A_FC,A_ALLOC,A_SUM,
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A_RUM,A_BR,A_CLRRRB,A_FMA,A_FPMA,A_FMS,A_FPMS,A_FNMA,A_FPNMA,
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A_XMA,A_FSELECT,A_FCLASS,A_FRCPA,A_FPRCPA,A_FRSQRTA,
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A_FPRSQRTA,A_FMIN,A_FMAX,A_FAMIN,A_FAMAX,A_FPMIN,A_FPMAX,
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A_FPAMIN,A_FPAMAX,A_FPCMP,A_FMERGE,A_FMIX,A_FSXT,A_FPACK,
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A_FSWAP,A_FAND,A_FANDCM,A_FOR,A_FXOR,A_FPMERGE,A_FCVT,
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A_FPCVT,A_FSETC,A_FCLRT,A_FCHKF,A_MOVL);
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Const
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firstop = low(tasmop);
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lastop = high(tasmop);
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type
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TAsmCond =
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();
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THint = (H_NONE,H_NT1,H_NT2,H_NTA);
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Type
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TRegister = (R_NO, { R_NO is Mandatory, signifies no register }
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R_0,R_1,R_2,R_3,R_4,R_5,R_6,R_7,R_8,R_9,
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R_10,R_11,R_12,R_13,R_14,R_15,R_16,R_17,R_18,R_19,
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R_20,R_21,R_22,R_23,R_24,R_25,R_26,R_27,R_28,R_29,
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R_30,R_31,
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R_F0,R_F1,R_F2,R_F3,R_F4,R_F5,R_F6,R_F7,R_F8,R_F9,
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R_F10,R_F11,R_F12,R_F13,R_F14,R_F15,R_F16,R_F17,R_F18,R_F19,
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R_F20,R_F21,R_F22,R_F23,R_F24,R_F25,R_F26,R_F27,R_F28,R_F29,
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R_F30,R_F31);
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TRegisterset = Set of TRegister;
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{ -1 indicates no qualifying prediction }
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tqp = -1..63;
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const
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qp_none : tqp = -1;
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{ Constants describing the registers }
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Const
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Firstreg = R_0;
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LastReg = R_F31;
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stack_pointer = R_30;
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frame_pointer = R_15;
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self_pointer = R_16;
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accumulator = R_0;
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global_pointer = R_29;
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return_pointer = R_26;
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{ it is used to pass the offset to the destructor helper routine }
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vmt_offset_reg = R_1;
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max_scratch_regs = 2;
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scratch_regs : array[1..max_scratch_regs] of tregister = (R_1,R_2);
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{ low and high of the available maximum width integer general purpose }
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{ registers }
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LoGPReg = R_0;
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HiGPReg = R_31;
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{ low and high of every possible width general purpose register (same as }
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{ above on most architctures apart from the 80x86) }
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LoReg = R_0;
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HiReg = R_31;
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cpuflags = [cf_64bitaddr];
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||||
{ sizes }
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pointersize = 8;
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extended_size = 16;
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general_registers = [R_0..R_31];
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intregs = [R_0..R_31];
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fpuregs = [R_F0..R_F31];
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mmregs = [];
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availabletempregsint = [R_0..R_14,R_16..R_25,R_28];
|
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availabletempregsfpu = [R_F0..R_F30];
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availabletempregsmm = [];
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c_countusableregsint = 26;
|
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c_countusableregsfpu = 31;
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c_countusableregsmm = 0;
|
||||
|
||||
maxfpuvarregs = 128;
|
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maxvarregs = 128;
|
||||
|
||||
max_operands = 4;
|
||||
|
||||
registers_saved_on_cdecl = [R_9..R_14,R_F2..R_F9];
|
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||||
varregs : Array [1..6] of Tregister =
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(R_9,R_10,R_11,R_12,R_13,R_14);
|
||||
|
||||
Type
|
||||
TReference = record
|
||||
offset : aword;
|
||||
symbol : pasmsymbol;
|
||||
base : tregister;
|
||||
is_immediate : boolean;
|
||||
offsetfixup : word; {needed for inline}
|
||||
{ the boundary to which the reference is surely aligned }
|
||||
alignment : byte;
|
||||
end;
|
||||
PReference = ^TReference;
|
||||
|
||||
tloc = (LOC_INVALID,
|
||||
LOC_REGISTER,
|
||||
LOC_FPU,
|
||||
LOC_MEM,
|
||||
LOC_REFERENCE,
|
||||
LOC_JUMP,
|
||||
{ the alpha doesn't have flags, but this }
|
||||
{ avoid some conditional compiling }
|
||||
{ DON'T USE for the alpha }
|
||||
LOC_FLAGS,
|
||||
LOC_CREGISTER,
|
||||
LOC_CFPUREGISTER,
|
||||
LOC_CONST);
|
||||
|
||||
tlocation = record
|
||||
case loc : tloc of
|
||||
LOC_REFERENCE,LOC_MEM : (reference : treference);
|
||||
LOC_CREGISTER,
|
||||
LOC_REGISTER : (register : tregister);
|
||||
LOC_FLAGS : (qp : tqp);
|
||||
LOC_JUMP : ();
|
||||
end;
|
||||
|
||||
{*****************************************************************************
|
||||
Opcode propeties (needed for optimizer)
|
||||
*****************************************************************************}
|
||||
|
||||
{$ifndef NOOPT}
|
||||
Type
|
||||
{What an instruction can change}
|
||||
TInsChange = (Ch_None);
|
||||
{$endif}
|
||||
|
||||
|
||||
{ resets all values of ref to defaults }
|
||||
procedure reset_reference(var ref : treference);
|
||||
{ set mostly used values of a new reference }
|
||||
function new_reference(base : tregister;offset : longint) : preference;
|
||||
function newreference(const r : treference) : preference;
|
||||
procedure disposereference(var r : preference);
|
||||
|
||||
function reg2str(r : tregister) : string;
|
||||
|
||||
{*****************************************************************************
|
||||
Init/Done
|
||||
*****************************************************************************}
|
||||
|
||||
procedure InitCpu;
|
||||
procedure DoneCpu;
|
||||
|
||||
implementation
|
||||
|
||||
uses
|
||||
verbose;
|
||||
|
||||
function reg2str(r : tregister) : string;
|
||||
|
||||
begin
|
||||
if r in [R_0..R_31] then
|
||||
reg2str:='R'+tostr(longint(r)-longint(R_0))
|
||||
else if r in [R_F0..R_F31] then
|
||||
reg2str:='F'+tostr(longint(r)-longint(R_F0))
|
||||
else internalerror(38991);
|
||||
end;
|
||||
|
||||
procedure reset_reference(var ref : treference);
|
||||
begin
|
||||
FillChar(ref,sizeof(treference),0);
|
||||
end;
|
||||
|
||||
|
||||
function new_reference(base : tregister;offset : longint) : preference;
|
||||
var
|
||||
r : preference;
|
||||
begin
|
||||
new(r);
|
||||
FillChar(r^,sizeof(treference),0);
|
||||
r^.offset:=offset;
|
||||
r^.alignment:=8;
|
||||
new_reference:=r;
|
||||
end;
|
||||
|
||||
function newreference(const r : treference) : preference;
|
||||
|
||||
var
|
||||
p : preference;
|
||||
begin
|
||||
new(p);
|
||||
p^:=r;
|
||||
newreference:=p;
|
||||
end;
|
||||
|
||||
procedure disposereference(var r : preference);
|
||||
|
||||
begin
|
||||
dispose(r);
|
||||
r:=Nil;
|
||||
end;
|
||||
|
||||
{*****************************************************************************
|
||||
Init/Done
|
||||
*****************************************************************************}
|
||||
|
||||
procedure InitCpu;
|
||||
begin
|
||||
end;
|
||||
|
||||
procedure DoneCpu;
|
||||
begin
|
||||
end;
|
||||
|
||||
end.
|
||||
{
|
||||
$Log$
|
||||
Revision 1.1 2000-12-31 16:54:19 florian
|
||||
+ initial revision
|
||||
|
||||
Revision 1.1 2000/07/13 06:30:11 michael
|
||||
+ Initial import
|
||||
|
||||
Revision 1.1 2000/07/09 10:40:12 peter
|
||||
* renamed to lowercase
|
||||
|
||||
Revision 1.1 2000/03/09 20:28:00 florian
|
||||
* initial release derieved from the ALPHA cpubase.pas, the
|
||||
file still contains some ALPHA stuff
|
||||
|
||||
}
|
||||
60
compiler/ia64/cpuinfo.pas
Normal file
60
compiler/ia64/cpuinfo.pas
Normal file
@ -0,0 +1,60 @@
|
||||
{
|
||||
$Id$
|
||||
Copyright (c) 1998-2000 by Florian Klaempfl
|
||||
|
||||
Basic Processor information
|
||||
|
||||
This program 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 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program 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 this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
****************************************************************************
|
||||
}
|
||||
Unit CPUInfo;
|
||||
|
||||
{$i defines.inc}
|
||||
|
||||
Interface
|
||||
|
||||
Type
|
||||
AWord = QWord;
|
||||
|
||||
{ the ordinal type used when evaluating constant integer expressions }
|
||||
TConstExprInt = int64;
|
||||
{ ... the same unsigned }
|
||||
TConstExprUInt = {$ifdef fpc}qword{$else}int64{$endif};
|
||||
|
||||
{ this must be an ordinal type with the same size as a pointer }
|
||||
{ to allow some dirty type casts for example when using }
|
||||
{ tconstsym.value }
|
||||
TPointerOrd = int64;
|
||||
|
||||
|
||||
Const
|
||||
{ Size of native extended type }
|
||||
extended_size = 10;
|
||||
|
||||
c_countusableregsint = 95;
|
||||
c_countusableregsfpu = 95;
|
||||
c_countusableregsmm = 0;
|
||||
c_countusableregsqp = 48;
|
||||
|
||||
Implementation
|
||||
|
||||
end.
|
||||
{
|
||||
$Log$
|
||||
Revision 1.1 2000-12-31 16:54:19 florian
|
||||
+ initial revision
|
||||
|
||||
}
|
||||
399
compiler/ia64/tgcpu.pas
Normal file
399
compiler/ia64/tgcpu.pas
Normal file
@ -0,0 +1,399 @@
|
||||
{
|
||||
$Id$
|
||||
Copyright (C) 2000 by Florian Klaempfl
|
||||
|
||||
This unit handles the temporary variables stuff for iA64
|
||||
This program 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 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program 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 this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
****************************************************************************
|
||||
}
|
||||
unit tgcpu;
|
||||
|
||||
{$i defines.inc}
|
||||
|
||||
interface
|
||||
|
||||
uses
|
||||
cobjects,globals,
|
||||
hcodegen,verbose,aasm,
|
||||
node,
|
||||
cpuinfo,cpubase,cpuasm;
|
||||
|
||||
const
|
||||
{ this is iA64 specific }
|
||||
countusableregqp : byte = c_countusableregsqp;
|
||||
|
||||
{ this value is used in tsaved, if the register isn't saved }
|
||||
reg_not_saved = $7fffffff;
|
||||
|
||||
type
|
||||
tpushed = array[R_NO..R_NO] of boolean;
|
||||
tsaved = array[R_NO..R_NO] of longint;
|
||||
|
||||
var
|
||||
{ tries to hold the amount of times which the current tree is processed }
|
||||
t_times : longint;
|
||||
|
||||
function getregisterint : tregister;
|
||||
procedure ungetregisterint(r : tregister);
|
||||
{ tries to allocate the passed register, if possible }
|
||||
function getexplicitregisterint(r : tregister) : tregister;
|
||||
|
||||
procedure ungetregister(r : tregister);
|
||||
|
||||
procedure cleartempgen;
|
||||
procedure del_reference(const ref : treference);
|
||||
procedure del_locref(const location : tlocation);
|
||||
procedure del_location(const l : tlocation);
|
||||
|
||||
{ pushs and restores registers }
|
||||
procedure pushusedregisters(var pushed : tpushed;b : byte);
|
||||
procedure popusedregisters(const pushed : tpushed);
|
||||
|
||||
{ saves and restores used registers to temp. values }
|
||||
procedure saveusedregisters(var saved : tsaved;b : byte);
|
||||
procedure restoreusedregisters(const saved : tsaved);
|
||||
|
||||
{ increments the push count of all registers in b}
|
||||
procedure incrementregisterpushed(b : byte);
|
||||
|
||||
procedure clearregistercount;
|
||||
procedure resetusableregisters;
|
||||
|
||||
type
|
||||
regvar_longintarray = array[0..128+128+64-1] of longint;
|
||||
regvar_booleanarray = array[0..128+128+64-1] of boolean;
|
||||
regvar_ptreearray = array[0..128+128+64-1] of tnode;
|
||||
|
||||
var
|
||||
unused,usableregs : tregisterset;
|
||||
|
||||
{ uses only 1 byte while a set uses in FPC 32 bytes }
|
||||
usedinproc : byte;
|
||||
|
||||
{ count, how much a register must be pushed if it is used as register }
|
||||
{ variable }
|
||||
reg_pushes : regvar_longintarray;
|
||||
is_reg_var : regvar_booleanarray;
|
||||
|
||||
|
||||
implementation
|
||||
|
||||
uses
|
||||
globtype,temp_gen;
|
||||
|
||||
procedure incrementregisterpushed(b : byte);
|
||||
|
||||
var
|
||||
regi : tregister;
|
||||
|
||||
begin
|
||||
{!!!!!!!!
|
||||
for regi:=R_EAX to R_EDI do
|
||||
begin
|
||||
if (b and ($80 shr word(regi)))<>0 then
|
||||
inc(reg_pushes[regi],t_times*2);
|
||||
end;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure pushusedregisters(var pushed : tpushed;b : byte);
|
||||
|
||||
var
|
||||
r : tregister;
|
||||
|
||||
begin
|
||||
{!!!!!!!!
|
||||
usedinproc:=usedinproc or b;
|
||||
for r:=R_EAX to R_EBX do
|
||||
begin
|
||||
pushed[r]:=false;
|
||||
{ if the register is used by the calling subroutine }
|
||||
if ((b and ($80 shr byte(r)))<>0) then
|
||||
begin
|
||||
{ and is present in use }
|
||||
if not(r in unused) then
|
||||
begin
|
||||
{ then save it }
|
||||
exprasmlist^.concat(new(paicpu,op_reg(A_PUSH,S_L,r)));
|
||||
|
||||
{ here was a big problem !!!!!}
|
||||
{ you cannot do that for a register that is
|
||||
globally assigned to a var
|
||||
this also means that you must push it much more
|
||||
often, but there must be a better way
|
||||
maybe by putting the value back to the stack !! }
|
||||
if not(is_reg_var[r]) then
|
||||
begin
|
||||
unused:=unused+[r];
|
||||
end;
|
||||
pushed[r]:=true;
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure saveusedregisters(var saved : tsaved;b : byte);
|
||||
|
||||
var
|
||||
r : tregister;
|
||||
hr : treference;
|
||||
|
||||
begin
|
||||
{!!!!!!!
|
||||
usedinproc:=usedinproc or b;
|
||||
for r:=R_EAX to R_EBX do
|
||||
begin
|
||||
saved[r]:=reg_not_saved;
|
||||
{ if the register is used by the calling subroutine }
|
||||
if ((b and ($80 shr byte(r)))<>0) then
|
||||
begin
|
||||
{ and is present in use }
|
||||
if not(r in unused) then
|
||||
begin
|
||||
{ then save it }
|
||||
gettempofsizereference(4,hr);
|
||||
saved[r]:=hr.offset;
|
||||
exprasmlist^.concat(new(paicpu,op_reg_ref(A_MOV,S_L,r,newreference(hr))));
|
||||
{ here was a big problem !!!!!}
|
||||
{ you cannot do that for a register that is
|
||||
globally assigned to a var
|
||||
this also means that you must push it much more
|
||||
often, but there must be a better way
|
||||
maybe by putting the value back to the stack !! }
|
||||
if not(is_reg_var[r]) then
|
||||
begin
|
||||
unused:=unused+[r];
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure popusedregisters(const pushed : tpushed);
|
||||
|
||||
var
|
||||
r : tregister;
|
||||
|
||||
begin
|
||||
{!!!!!!!
|
||||
{ restore in reverse order: }
|
||||
for r:=R_EBX downto R_EAX do
|
||||
if pushed[r] then
|
||||
begin
|
||||
exprasmlist^.concat(new(paicpu,op_reg(A_POP,S_L,r)));
|
||||
unused:=unused-[r];
|
||||
end;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure restoreusedregisters(const saved : tsaved);
|
||||
var
|
||||
r : tregister;
|
||||
hr : treference;
|
||||
|
||||
begin
|
||||
{
|
||||
{ restore in reverse order: }
|
||||
for r:=R_EBX downto R_EAX do
|
||||
if saved[r]<>reg_not_saved then
|
||||
begin
|
||||
reset_reference(hr);
|
||||
hr.base:=frame_pointer;
|
||||
hr.offset:=saved[r];
|
||||
exprasmlist^.concat(new(paicpu,op_ref_reg(A_MOV,S_L,newreference(hr),r)));
|
||||
unused:=unused-[r];
|
||||
ungetiftemp(hr);
|
||||
end;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure ungetregister(r : tregister);
|
||||
|
||||
begin
|
||||
{
|
||||
if r in [R_EAX,R_ECX,R_EDX,R_EBX,R_ESP,R_EBP,R_ESI,R_EDI] then
|
||||
ungetregister32(r)
|
||||
else if r in [R_AX,R_CX,R_DX,R_BX,R_SP,R_BP,R_SI,R_DI] then
|
||||
ungetregister32(reg16toreg32(r))
|
||||
else if r in [R_AL,R_BL,R_CL,R_DL] then
|
||||
ungetregister32(reg8toreg32(r))
|
||||
else internalerror(18);
|
||||
}
|
||||
end;
|
||||
|
||||
procedure ungetregisterint(r : tregister);
|
||||
|
||||
begin
|
||||
{
|
||||
if (r = R_EDI) or
|
||||
((not assigned(procinfo^._class)) and (r = R_ESI)) then
|
||||
begin
|
||||
exprasmlist^.concat(new(pairegalloc,dealloc(r)));
|
||||
exit;
|
||||
end;
|
||||
if cs_regalloc in aktglobalswitches then
|
||||
begin
|
||||
{ takes much time }
|
||||
if not(r in usableregs) then
|
||||
exit;
|
||||
unused:=unused+[r];
|
||||
inc(usablereg32);
|
||||
end
|
||||
else
|
||||
begin
|
||||
if not(r in [R_EAX,R_EBX,R_ECX,R_EDX]) then
|
||||
exit;
|
||||
inc(usablereg32);
|
||||
unused:=unused+[r];
|
||||
end;
|
||||
exprasmlist^.concat(new(pairegalloc,dealloc(r)));
|
||||
}
|
||||
end;
|
||||
|
||||
|
||||
procedure del_reference(const ref : treference);
|
||||
|
||||
begin
|
||||
if ref.is_immediate then
|
||||
exit;
|
||||
ungetregisterint(ref.base);
|
||||
end;
|
||||
|
||||
|
||||
procedure del_locref(const location : tlocation);
|
||||
begin
|
||||
if (location.loc<>LOC_MEM) and (location.loc<>LOC_REFERENCE) then
|
||||
exit;
|
||||
if location.reference.is_immediate then
|
||||
exit;
|
||||
ungetregisterint(location.reference.base);
|
||||
end;
|
||||
|
||||
|
||||
procedure del_location(const l : tlocation);
|
||||
begin
|
||||
case l.loc of
|
||||
LOC_REGISTER :
|
||||
ungetregister(l.register);
|
||||
LOC_MEM,LOC_REFERENCE :
|
||||
del_reference(l.reference);
|
||||
end;
|
||||
end;
|
||||
|
||||
|
||||
function getregisterint : tregister;
|
||||
begin
|
||||
{
|
||||
if usableregint=0 then
|
||||
internalerror(10);
|
||||
dec(usableregint);
|
||||
if R_EAX in unused then
|
||||
begin
|
||||
unused:=unused-[R_EAX];
|
||||
usedinproc:=usedinproc or ($80 shr byte(R_EAX));
|
||||
getregister32:=R_EAX;
|
||||
exprasmlist^.concat(new(pairegalloc,alloc(R_EAX)));
|
||||
end
|
||||
else if R_EDX in unused then
|
||||
begin
|
||||
unused:=unused-[R_EDX];
|
||||
usedinproc:=usedinproc or ($80 shr byte(R_EDX));
|
||||
getregister32:=R_EDX;
|
||||
exprasmlist^.concat(new(pairegalloc,alloc(R_EDX)));
|
||||
end
|
||||
else if R_EBX in unused then
|
||||
begin
|
||||
unused:=unused-[R_EBX];
|
||||
usedinproc:=usedinproc or ($80 shr byte(R_EBX));
|
||||
getregister32:=R_EBX;
|
||||
exprasmlist^.concat(new(pairegalloc,alloc(R_EBX)));
|
||||
end
|
||||
else if R_ECX in unused then
|
||||
begin
|
||||
unused:=unused-[R_ECX];
|
||||
usedinproc:=usedinproc or ($80 shr byte(R_ECX));
|
||||
getregister32:=R_ECX;
|
||||
exprasmlist^.concat(new(pairegalloc,alloc(R_ECX)));
|
||||
end
|
||||
else internalerror(10);
|
||||
}
|
||||
end;
|
||||
|
||||
function getexplicitregisterint(r : tregister) : tregister;
|
||||
|
||||
begin
|
||||
{
|
||||
if r in [R_ESI,R_EDI] then
|
||||
begin
|
||||
exprasmlist^.concat(new(pairegalloc,alloc(r)));
|
||||
getexplicitregister32 := r;
|
||||
exit;
|
||||
end;
|
||||
if r in unused then
|
||||
begin
|
||||
dec(usablereg32);
|
||||
unused:=unused-[r];
|
||||
usedinproc:=usedinproc or ($80 shr byte(r));
|
||||
exprasmlist^.concat(new(pairegalloc,alloc(r)));
|
||||
getexplicitregister32:=r;
|
||||
end
|
||||
else
|
||||
getexplicitregister32:=getregister32;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure cleartempgen;
|
||||
|
||||
begin
|
||||
unused:=usableregs;
|
||||
countusableregint:=c_countusableregsint;
|
||||
countusableregfpu:=c_countusableregsfpu;
|
||||
countusableregqp:=c_countusableregsqp;
|
||||
end;
|
||||
|
||||
|
||||
procedure clearregistercount;
|
||||
var
|
||||
regi : tregister;
|
||||
begin
|
||||
{
|
||||
for regi:=R_EAX to R_EDI do
|
||||
begin
|
||||
reg_pushes[regi]:=0;
|
||||
is_reg_var[regi]:=false;
|
||||
end;
|
||||
}
|
||||
end;
|
||||
|
||||
procedure resetusableregisters;
|
||||
begin
|
||||
{
|
||||
usableregs:=[R_EAX,R_EBX,R_ECX,R_EDX];
|
||||
c_usableregs:=4;
|
||||
}
|
||||
end;
|
||||
|
||||
begin
|
||||
resetusableregisters;
|
||||
end.
|
||||
{
|
||||
$Log$
|
||||
Revision 1.1 2000-12-31 16:54:19 florian
|
||||
+ initial revision
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user