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fpc/compiler/x86/cga.pas
peter fb81b7ebbb * old trgobj moved to x86/rgcpu and renamed to trgx86fpu 
* tregisteralloctor renamed to trgobj
  * removed rgobj from a lot of units
  * moved location_* and reference_* to cgobj
  * first things for mmx register allocation
2003-10-10 17:48:13 +00:00

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{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl
Helper routines for the i386 code generator
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 cga;
{$i fpcdefs.inc}
interface
uses
cpuinfo,cpubase,cgbase,
symconst,symtype,symdef,aasmbase,aasmtai,aasmcpu;
{$define TESTGETTEMP to store const that
are written into temps for later release PM }
function def_opsize(p1:tdef):topsize;
procedure emit_none(i : tasmop;s : topsize);
procedure emit_const(i : tasmop;s : topsize;c : longint);
procedure emit_reg(i : tasmop;s : topsize;reg : tregister);
procedure emit_ref(i : tasmop;s : topsize;const ref : treference);
procedure emit_const_reg(i : tasmop;s : topsize;c : longint;reg : tregister);
procedure emit_const_ref(i : tasmop;s : topsize;c : longint;const ref : treference);
procedure emit_ref_reg(i : tasmop;s : topsize;const ref : treference;reg : tregister);
procedure emit_reg_ref(i : tasmop;s : topsize;reg : tregister;const ref : treference);
procedure emit_reg_reg(i : tasmop;s : topsize;reg1,reg2 : tregister);
procedure emit_const_reg_reg(i : tasmop;s : topsize;c : longint;reg1,reg2 : tregister);
procedure emit_reg_reg_reg(i : tasmop;s : topsize;reg1,reg2,reg3 : tregister);
procedure emit_sym(i : tasmop;s : topsize;op : tasmsymbol);
implementation
uses
cutils,
systems,verbose,
cgobj;
{*****************************************************************************
Helpers
*****************************************************************************}
function def_opsize(p1:tdef):topsize;
begin
case p1.size of
1 : def_opsize:=S_B;
2 : def_opsize:=S_W;
4 : def_opsize:=S_L;
{$ifdef x86_64}
8 : def_opsize:=S_Q;
{$else x86_64}
{ I don't know if we need it (FK) }
8 : def_opsize:=S_L;
{$endif x86_64}
else
internalerror(130820001);
end;
end;
{*****************************************************************************
Emit Assembler
*****************************************************************************}
procedure emit_none(i : tasmop;s : topsize);
begin
exprasmList.concat(Taicpu.Op_none(i,s));
end;
procedure emit_reg(i : tasmop;s : topsize;reg : tregister);
begin
exprasmList.concat(Taicpu.Op_reg(i,s,reg));
end;
procedure emit_ref(i : tasmop;s : topsize;const ref : treference);
begin
exprasmList.concat(Taicpu.Op_ref(i,s,ref));
end;
procedure emit_const(i : tasmop;s : topsize;c : longint);
begin
exprasmList.concat(Taicpu.Op_const(i,s,aword(c)));
end;
procedure emit_const_reg(i : tasmop;s : topsize;c : longint;reg : tregister);
begin
exprasmList.concat(Taicpu.Op_const_reg(i,s,aword(c),reg));
end;
procedure emit_const_ref(i : tasmop;s : topsize;c : longint;const ref : treference);
begin
exprasmList.concat(Taicpu.Op_const_ref(i,s,aword(c),ref));
end;
procedure emit_ref_reg(i : tasmop;s : topsize;const ref : treference;reg : tregister);
begin
exprasmList.concat(Taicpu.Op_ref_reg(i,s,ref,reg));
end;
procedure emit_reg_ref(i : tasmop;s : topsize;reg : tregister;const ref : treference);
begin
exprasmList.concat(Taicpu.Op_reg_ref(i,s,reg,ref));
end;
procedure emit_reg_reg(i : tasmop;s : topsize;reg1,reg2 : tregister);
var instr:Taicpu;
begin
if not ((reg1=reg2) and (i=A_MOV)) then
begin
instr:=Taicpu.op_reg_reg(i,s,reg1,reg2);
exprasmlist.concat(instr);
if i=A_MOV then
cg.add_move_instruction(instr);
end;
end;
procedure emit_const_reg_reg(i : tasmop;s : topsize;c : longint;reg1,reg2 : tregister);
begin
exprasmList.concat(Taicpu.Op_const_reg_reg(i,s,c,reg1,reg2));
end;
procedure emit_reg_reg_reg(i : tasmop;s : topsize;reg1,reg2,reg3 : tregister);
begin
exprasmList.concat(Taicpu.Op_reg_reg_reg(i,s,reg1,reg2,reg3));
end;
procedure emit_sym(i : tasmop;s : topsize;op : tasmsymbol);
begin
exprasmList.concat(Taicpu.Op_sym(i,s,op));
end;
end.
{
$Log$
Revision 1.7 2003-10-10 17:48:14 peter
* old trgobj moved to x86/rgcpu and renamed to trgx86fpu
* tregisteralloctor renamed to trgobj
* removed rgobj from a lot of units
* moved location_* and reference_* to cgobj
* first things for mmx register allocation
Revision 1.6 2003/10/09 21:31:37 daniel
* Register allocator splitted, ans abstract now
Revision 1.5 2003/10/01 20:34:50 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.4 2003/09/28 21:49:39 peter
* removed emitjmp
Revision 1.3 2003/09/03 15:55:02 peter
* NEWRA branch merged
Revision 1.2.2.1 2003/08/29 17:29:00 peter
* next batch of updates
Revision 1.2 2003/05/22 21:33:31 peter
* removed some unit dependencies
Revision 1.1 2003/04/30 20:53:32 florian
* error when address of an abstract method is taken
* fixed some x86-64 problems
* merged some more x86-64 and i386 code
Revision 1.38 2003/04/17 16:48:21 daniel
* Added some code to keep track of move instructions in register
allocator
Revision 1.37 2003/03/08 08:59:07 daniel
+ $define newra will enable new register allocator
+ getregisterint will return imaginary registers with $newra
+ -sr switch added, will skip register allocation so you can see
the direct output of the code generator before register allocation
Revision 1.36 2003/02/19 22:00:15 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.35 2003/01/13 14:54:34 daniel
* Further work to convert codegenerator register convention;
internalerror bug fixed.
Revision 1.34 2003/01/08 18:43:57 daniel
* Tregister changed into a record
Revision 1.33 2002/07/01 18:46:29 peter
* internal linker
* reorganized aasm layer
Revision 1.32 2002/05/18 13:34:21 peter
* readded missing revisions
Revision 1.31 2002/05/16 19:46:50 carl
+ defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
+ try to fix temp allocation (still in ifdef)
+ generic constructor calls
+ start of tassembler / tmodulebase class cleanup
Revision 1.29 2002/05/13 19:54:37 peter
* removed n386ld and n386util units
* maybe_save/maybe_restore added instead of the old maybe_push
Revision 1.28 2002/05/12 16:53:16 peter
* moved entry and exitcode to ncgutil and cgobj
* foreach gets extra argument for passing local data to the
iterator function
* -CR checks also class typecasts at runtime by changing them
into as
* fixed compiler to cycle with the -CR option
* fixed stabs with elf writer, finally the global variables can
be watched
* removed a lot of routines from cga unit and replaced them by
calls to cgobj
* u32bit-s32bit updates for and,or,xor nodes. When one element is
u32bit then the other is typecasted also to u32bit without giving
a rangecheck warning/error.
* fixed pascal calling method with reversing also the high tree in
the parast, detected by tcalcst3 test
Revision 1.27 2002/04/25 20:16:39 peter
* moved more routines from cga/n386util
Revision 1.26 2002/04/21 15:29:53 carl
* changeregsize -> rg.makeregsize
Revision 1.25 2002/04/20 21:37:07 carl
+ generic FPC_CHECKPOINTER
+ first parameter offset in stack now portable
* rename some constants
+ move some cpu stuff to other units
- remove unused constents
* fix stacksize for some targets
* fix generic size problems which depend now on EXTEND_SIZE constant
* removing frame pointer in routines is only available for : i386,m68k and vis targets
Revision 1.24 2002/04/19 15:39:34 peter
* removed some more routines from cga
* moved location_force_reg/mem to ncgutil
* moved arrayconstructnode secondpass to ncgld
Revision 1.23 2002/04/15 19:44:20 peter
* fixed stackcheck that would be called recursively when a stack
error was found
* generic changeregsize(reg,size) for i386 register resizing
* removed some more routines from cga unit
* fixed returnvalue handling
* fixed default stacksize of linux and go32v2, 8kb was a bit small :-)
Revision 1.22 2002/04/14 20:54:17 carl
+ stack checking enabled for all targets (it is simulated now)
Revision 1.21 2002/04/04 19:06:08 peter
* removed unused units
* use tlocation.size in cg.a_*loc*() routines
Revision 1.20 2002/04/04 18:30:22 carl
+ added wdosx support (patch from Pavel)
Revision 1.19 2002/04/02 17:11:33 peter
* tlocation,treference update
* LOC_CONSTANT added for better constant handling
* secondadd splitted in multiple routines
* location_force_reg added for loading a location to a register
of a specified size
* secondassignment parses now first the right and then the left node
(this is compatible with Kylix). This saves a lot of push/pop especially
with string operations
* adapted some routines to use the new cg methods
Revision 1.18 2002/03/31 20:26:37 jonas
+ a_loadfpu_* and a_loadmm_* methods in tcg
* register allocation is now handled by a class and is mostly processor
independent (+rgobj.pas and i386/rgcpu.pas)
* temp allocation is now handled by a class (+tgobj.pas, -i386\tgcpu.pas)
* some small improvements and fixes to the optimizer
* some register allocation fixes
* some fpuvaroffset fixes in the unary minus node
* push/popusedregisters is now called rg.save/restoreusedregisters and
(for i386) uses temps instead of push/pop's when using -Op3 (that code is
also better optimizable)
* fixed and optimized register saving/restoring for new/dispose nodes
* LOC_FPU locations now also require their "register" field to be set to
R_ST, not R_ST0 (the latter is used for LOC_CFPUREGISTER locations only)
- list field removed of the tnode class because it's not used currently
and can cause hard-to-find bugs
Revision 1.17 2002/03/28 16:07:52 armin
+ initialize threadvars defined local in units
Revision 1.16 2002/03/04 19:10:12 peter
* removed compiler warnings
Revision 1.15 2002/01/24 18:25:53 peter
* implicit result variable generation for assembler routines
* removed m_tp modeswitch, use m_tp7 or not(m_fpc) instead
Revision 1.14 2002/01/19 14:21:17 peter
* fixed init/final for value parameters
}
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