mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-29 06:23:43 +02:00
83 lines
2.5 KiB
ObjectPascal
83 lines
2.5 KiB
ObjectPascal
{
|
|
Copyright (c) 2019 by Dmitry Boyarintsev
|
|
|
|
WebAssembly-specific code for 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 nwasmcal;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
cgbase,
|
|
symtype,symdef,cgutils,parabase,
|
|
node,ncal,ncgcal,hlcgobj,aasmcpu,cpubase, wasmdef;
|
|
|
|
type
|
|
{ twasmcallparanode }
|
|
|
|
twasmcallparanode = class(tcgcallparanode)
|
|
end;
|
|
|
|
{ twasmcallnode }
|
|
|
|
twasmcallnode = class(tcgcallnode)
|
|
protected
|
|
procedure extra_post_call_code; override;
|
|
procedure do_release_unused_return_value; override;
|
|
procedure set_result_location(realresdef: tstoreddef); override;
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
globtype, aasmdata, defutil, tgobj, hlcgcpu, symconst, paramgr;
|
|
|
|
{ twasmcallnode }
|
|
|
|
procedure twasmcallnode.extra_post_call_code;
|
|
begin
|
|
thlcgwasm(hlcg).g_adjust_stack_after_call(current_asmdata.CurrAsmList,procdefinition);
|
|
end;
|
|
|
|
procedure twasmcallnode.do_release_unused_return_value;
|
|
begin
|
|
if is_void(resultdef) then
|
|
exit;
|
|
if paramanager.ret_in_param(resultdef,procdefinition) then
|
|
exit;
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_drop));
|
|
thlcgwasm(hlcg).decstack(current_asmdata.CurrAsmList,1);
|
|
end;
|
|
|
|
procedure twasmcallnode.set_result_location(realresdef: tstoreddef);
|
|
begin
|
|
// default implementation is placing the return value on LOC_REGISTER.
|
|
// WebAssembly always returns the value on stack.
|
|
location_reset_ref(location,LOC_REFERENCE,def_cgsize(realresdef),1,[]);
|
|
tg.gethltemp(current_asmdata.CurrAsmList,realresdef,retloc.intsize,tt_normal,location.reference);
|
|
end;
|
|
|
|
begin
|
|
ccallnode:=twasmcallnode;
|
|
ccallparanode:=twasmcallparanode;
|
|
end.
|