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fpc/compiler/i386/n386cal.pas
florian bbf7300a0c * Florian's culmutative nr. 1; contains: 
- invalid calling conventions for a certain cpu are rejected
    - arm softfloat calling conventions
    - -Sp for cpu dependend code generation
    - several arm fixes
    - remaining code for value open array paras on heap
2003-11-07 15:58:32 +00:00

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{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl
Generate i386 assembler for in call nodes
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 n386cal;
{$i fpcdefs.inc}
interface
{ $define AnsiStrRef}
uses
ncgcal;
type
ti386callnode = class(tcgcallnode)
protected
function align_parasize:longint;override;
procedure pop_parasize(pop_size:longint);override;
procedure extra_interrupt_code;override;
end;
implementation
uses
globtype,systems,
cutils,verbose,globals,
{$ifdef GDB}
gdb,
{$endif GDB}
cgbase,
cpubase,paramgr,
aasmtai,aasmcpu,
ncal,nbas,nmem,nld,ncnv,
cga,cgobj,cpuinfo;
{*****************************************************************************
TI386CALLNODE
*****************************************************************************}
procedure ti386callnode.extra_interrupt_code;
begin
emit_none(A_PUSHF,S_L);
emit_reg(A_PUSH,S_L,NR_CS);
end;
function ti386callnode.align_parasize:longint;
var
pop_size : longint;
{$ifdef OPTALIGN}
pop_esp : boolean;
push_size : longint;
{$endif OPTALIGN}
i : integer;
begin
pop_size:=0;
{ This parasize aligned on 4 ? }
i:=pushedparasize and 3;
if i>0 then
inc(pop_size,4-i);
{ insert the opcode and update pushedparasize }
{ never push 4 or more !! }
pop_size:=pop_size mod 4;
if pop_size>0 then
begin
inc(pushedparasize,pop_size);
exprasmlist.concat(taicpu.op_const_reg(A_SUB,S_L,pop_size,NR_ESP));
{$ifdef GDB}
if (cs_debuginfo in aktmoduleswitches) and
(exprasmList.first=exprasmList.last) then
exprasmList.concat(Tai_force_line.Create);
{$endif GDB}
end;
{$ifdef OPTALIGN}
if pop_allowed and (cs_align in aktglobalswitches) then
begin
pop_esp:=true;
push_size:=pushedparasize;
{ !!!! here we have to take care of return type, self
and nested procedures
}
inc(push_size,12);
emit_reg_reg(A_MOV,S_L,rsp,R_EDI);
if (push_size mod 8)=0 then
emit_const_reg(A_AND,S_L,$fffffff8,rsp)
else
begin
emit_const_reg(A_SUB,S_L,push_size,rsp);
emit_const_reg(A_AND,S_L,$fffffff8,rsp);
emit_const_reg(A_SUB,S_L,push_size,rsp);
end;
r.enum:=R_INTREGISTER;
r.number:=R_EDI;
emit_reg(A_PUSH,S_L,r);
end
else
pop_esp:=false;
{$endif OPTALIGN}
align_parasize:=pop_size;
end;
procedure ti386callnode.pop_parasize(pop_size:longint);
var
hreg : tregister;
begin
{ better than an add on all processors }
if pop_size=4 then
begin
hreg:=cg.getintregister(exprasmlist,OS_INT);
exprasmlist.concat(taicpu.op_reg(A_POP,S_L,hreg));
cg.ungetregister(exprasmlist,hreg);
end
{ the pentium has two pipes and pop reg is pairable }
{ but the registers must be different! }
else
if (pop_size=8) and
not(cs_littlesize in aktglobalswitches) and
(aktoptprocessor=ClassPentium) then
begin
hreg:=cg.getintregister(exprasmlist,OS_INT);
exprasmlist.concat(taicpu.op_reg(A_POP,S_L,hreg));
cg.ungetregister(exprasmlist,hreg);
hreg:=cg.getintregister(exprasmlist,OS_INT);
exprasmlist.concat(taicpu.op_reg(A_POP,S_L,hreg));
cg.ungetregister(exprasmlist,hreg);
end
else
if pop_size<>0 then
exprasmlist.concat(taicpu.op_const_reg(A_ADD,S_L,pop_size,NR_ESP));
{$ifdef OPTALIGN}
if pop_esp then
emit_reg(A_POP,S_L,NR_ESP);
{$endif OPTALIGN}
end;
begin
ccallnode:=ti386callnode;
end.
{
$Log$
Revision 1.99 2003-11-07 15:58:32 florian
* Florian's culmutative nr. 1; contains:
- invalid calling conventions for a certain cpu are rejected
- arm softfloat calling conventions
- -Sp for cpu dependend code generation
- several arm fixes
- remaining code for value open array paras on heap
Revision 1.98 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 1.97 2003/10/09 21:31:37 daniel
* Register allocator splitted, ans abstract now
Revision 1.96 2003/10/01 20:34:49 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.95 2003/09/23 17:56:06 peter
* locals and paras are allocated in the code generation
* tvarsym.localloc contains the location of para/local when
generating code for the current procedure
Revision 1.94 2003/09/03 15:55:01 peter
* NEWRA branch merged
Revision 1.93.2.1 2003/08/29 17:29:00 peter
* next batch of updates
Revision 1.93 2003/05/30 23:57:08 peter
* more sparc cleanup
* accumulator removed, splitted in function_return_reg (called) and
function_result_reg (caller)
Revision 1.92 2003/05/26 21:17:18 peter
* procinlinenode removed
* aktexit2label removed, fast exit removed
+ tcallnode.inlined_pass_2 added
Revision 1.91 2003/05/22 21:32:29 peter
* removed some unit dependencies
Revision 1.90 2003/04/23 14:42:08 daniel
* Further register allocator work. Compiler now smaller with new
allocator than without.
* Somebody forgot to adjust ppu version number
Revision 1.89 2003/04/22 14:33:38 peter
* removed some notes/hints
Revision 1.88 2003/04/22 10:09:35 daniel
+ Implemented the actual register allocator
+ Scratch registers unavailable when new register allocator used
+ maybe_save/maybe_restore unavailable when new register allocator used
Revision 1.87 2003/04/04 15:38:56 peter
* moved generic code from n386cal to ncgcal, i386 now also
uses the generic ncgcal
Revision 1.86 2003/03/30 20:59:07 peter
* fix classmethod from classmethod call
* move BeforeDestruction/AfterConstruction calls to
genentrycode/genexitcode instead of generating them on the fly
after a call to a constructor
Revision 1.85 2003/03/28 19:16:57 peter
* generic constructor working for i386
* remove fixed self register
* esi added as address register for i386
Revision 1.84 2003/03/13 19:52:23 jonas
* and more new register allocator fixes (in the i386 code generator this
time). At least now the ppc cross compiler can compile the linux
system unit again, but I haven't tested it.
Revision 1.83 2003/03/06 11:35:50 daniel
* Fixed internalerror 7843 issue
Revision 1.82 2003/02/19 22:00:15 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.81 2003/01/30 21:46:57 peter
* self fixes for static methods (merged)
Revision 1.80 2003/01/13 18:37:44 daniel
* Work on register conversion
Revision 1.79 2003/01/08 18:43:57 daniel
* Tregister changed into a record
Revision 1.78 2002/12/15 21:30:12 florian
* tcallnode.paraitem introduced, all references to defcoll removed
Revision 1.77 2002/11/27 20:05:06 peter
* cdecl array of const fixes
Revision 1.76 2002/11/25 17:43:26 peter
* splitted defbase in defutil,symutil,defcmp
* merged isconvertable and is_equal into compare_defs(_ext)
* made operator search faster by walking the list only once
Revision 1.75 2002/11/18 17:32:00 peter
* pass proccalloption to ret_in_xxx and push_xxx functions
Revision 1.74 2002/11/15 01:58:57 peter
* merged changes from 1.0.7 up to 04-11
- -V option for generating bug report tracing
- more tracing for option parsing
- errors for cdecl and high()
- win32 import stabs
- win32 records<=8 are returned in eax:edx (turned off by default)
- heaptrc update
- more info for temp management in .s file with EXTDEBUG
Revision 1.73 2002/10/05 12:43:29 carl
* fixes for Delphi 6 compilation
(warning : Some features do not work under Delphi)
Revision 1.72 2002/09/17 18:54:03 jonas
* a_load_reg_reg() now has two size parameters: source and dest. This
allows some optimizations on architectures that don't encode the
register size in the register name.
Revision 1.71 2002/09/16 19:07:37 peter
* push 0 instead of VMT when calling a constructor from a member
Revision 1.70 2002/09/07 15:25:10 peter
* old logs removed and tabs fixed
Revision 1.69 2002/09/01 18:43:27 peter
* include FUNCTION_RETURN_REG in regs_to_push list
Revision 1.68 2002/09/01 12:13:00 peter
* use a_call_reg
* ungetiftemp for procvar of object temp
Revision 1.67 2002/08/25 19:25:21 peter
* sym.insert_in_data removed
* symtable.insertvardata/insertconstdata added
* removed insert_in_data call from symtable.insert, it needs to be
called separatly. This allows to deref the address calculation
* procedures now calculate the parast addresses after the procedure
directives are parsed. This fixes the cdecl parast problem
* push_addr_param has an extra argument that specifies if cdecl is used
or not
Revision 1.66 2002/08/23 16:14:49 peter
* tempgen cleanup
* tt_noreuse temp type added that will be used in genentrycode
Revision 1.65 2002/08/18 20:06:30 peter
* inlining is now also allowed in interface
* renamed write/load to ppuwrite/ppuload
* tnode storing in ppu
* nld,ncon,nbas are already updated for storing in ppu
Revision 1.64 2002/08/17 09:23:45 florian
* first part of procinfo rewrite
Revision 1.63 2002/08/12 15:08:42 carl
+ stab register indexes for powerpc (moved from gdb to cpubase)
+ tprocessor enumeration moved to cpuinfo
+ linker in target_info is now a class
* many many updates for m68k (will soon start to compile)
- removed some ifdef or correct them for correct cpu
Revision 1.62 2002/08/11 14:32:30 peter
* renamed current_library to objectlibrary
Revision 1.61 2002/08/11 13:24:16 peter
* saving of asmsymbols in ppu supported
* asmsymbollist global is removed and moved into a new class
tasmlibrarydata that will hold the info of a .a file which
corresponds with a single module. Added librarydata to tmodule
to keep the library info stored for the module. In the future the
objectfiles will also be stored to the tasmlibrarydata class
* all getlabel/newasmsymbol and friends are moved to the new class
Revision 1.60 2002/07/20 11:58:01 florian
* types.pas renamed to defbase.pas because D6 contains a types
unit so this would conflicts if D6 programms are compiled
+ Willamette/SSE2 instructions to assembler added
Revision 1.59 2002/07/11 14:41:33 florian
* start of the new generic parameter handling
Revision 1.58 2002/07/07 09:52:34 florian
* powerpc target fixed, very simple units can be compiled
* some basic stuff for better callparanode handling, far from being finished
Revision 1.57 2002/07/06 20:27:26 carl
+ generic set handling
Revision 1.56 2002/07/01 18:46:31 peter
* internal linker
* reorganized aasm layer
Revision 1.55 2002/07/01 16:23:56 peter
* cg64 patch
* basics for currency
* asnode updates for class and interface (not finished)
Revision 1.54 2002/05/20 13:30:40 carl
* bugfix of hdisponen (base must be set, not index)
* more portability fixes
Revision 1.53 2002/05/18 13:34:23 peter
* readded missing revisions
Revision 1.52 2002/05/16 19:46:51 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 1.50 2002/05/13 19:54:38 peter
* removed n386ld and n386util units
* maybe_save/maybe_restore added instead of the old maybe_push
Revision 1.49 2002/05/12 16:53:17 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
}
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