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https://gitlab.com/freepascal.org/fpc/source.git
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81427523ab
required for the LLVM support (LLVM parameter support is not yet
included)
* always return the function return loc from a_call*, again as required
for the LLVM support
git-svn-id: branches/hlcgllvm@26992 -
102 lines
2.8 KiB
ObjectPascal
102 lines
2.8 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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Common x86 support for call nodes
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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 nx86cal;
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{$i fpcdefs.inc}
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interface
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{ $define AnsiStrRef}
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uses
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symdef,
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cgutils,
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ncgcal,parabase;
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type
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{ tx86callnode }
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tx86callnode = class(tcgcallnode)
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protected
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procedure do_release_unused_return_value;override;
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procedure set_result_location(realresdef: tstoreddef);override;
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function can_call_ref(var ref: treference):boolean;override;
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function do_call_ref(ref: treference): tcgpara;override;
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end;
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implementation
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uses
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cgobj,
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cgbase,cpubase,cgx86,cga,aasmdata,aasmcpu,
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hlcgobj;
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{*****************************************************************************
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TX86CALLNODE
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*****************************************************************************}
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procedure tx86callnode.do_release_unused_return_value;
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begin
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case location.loc of
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LOC_FPUREGISTER :
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begin
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{ release FPU stack }
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emit_reg(A_FSTP,S_NO,NR_FPU_RESULT_REG);
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tcgx86(cg).dec_fpu_stack;
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end
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else
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inherited do_release_unused_return_value;
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end;
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end;
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procedure tx86callnode.set_result_location(realresdef: tstoreddef);
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begin
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if (retloc.location^.loc=LOC_FPUREGISTER) then
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begin
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tcgx86(cg).inc_fpu_stack;
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location_reset(location,LOC_FPUREGISTER,retloc.location^.size);
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location.register:=retloc.location^.register;
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end
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else
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inherited set_result_location(realresdef);
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end;
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function tx86callnode.can_call_ref(var ref: treference): boolean;
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begin
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tcgx86(cg).make_simple_ref(current_asmdata.CurrAsmList,ref);
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result:=true;
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end;
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function tx86callnode.do_call_ref(ref: treference): tcgpara;
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begin
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current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_CALL,S_NO,ref));
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result:=hlcg.get_call_result_cgpara(procdefinition,typedef)
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end;
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end.
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