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{
Copyright (c) 1998-2011, 2019 by Florian Klaempfl and Jonas Maebe, Dmitry Boyarintsev
Generate WebAssembly code for math 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 nwasmmat;
{$i fpcdefs.inc}
interface
uses
node,nmat,ncgmat,ncghlmat;
type
twasmmoddivnode = class(tmoddivnode)
protected
function use_moddiv64bitint_helper: boolean; override;
public
procedure pass_generate_code;override;
end;
twasmshlshrnode = class(tshlshrnode)
procedure pass_generate_code;override;
end;
twasmnotnode = class(tcgnotnode)
protected
procedure second_boolean;override;
end;
twasmunaryminusnode = class(tcgunaryminusnode)
procedure second_float;override;
end;
implementation
uses
globtype,systems,constexp,
cutils,verbose,globals,compinnr,
symconst,symdef,
aasmbase,aasmcpu,aasmtai,aasmdata,
defutil,
cgbase,cgobj,pass_2,procinfo,
ncon,
cpubase,
hlcgobj,hlcgcpu,cgutils;
{*****************************************************************************
twasmmoddivnode
*****************************************************************************}
function twasmmoddivnode.use_moddiv64bitint_helper: boolean;
begin
result:=
(left.resultdef.typ=orddef) and
(right.resultdef.typ=orddef) and
((torddef(left.resultdef).ordtype=u64bit) or
(torddef(right.resultdef).ordtype=u64bit));
end;
procedure twasmmoddivnode.pass_generate_code;
var
tmpreg: tregister;
lab: tasmlabel;
ovloc: tlocation;
op: topcg;
isu32int: boolean;
begin
secondpass(left);
secondpass(right);
location_reset(location,LOC_REGISTER,left.location.size);
location.register:=hlcg.getintregister(current_asmdata.CurrAsmList,resultdef);
if nodetype=divn then
begin
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
if is_signed(resultdef) then
op:=OP_IDIV
else
op:=OP_DIV;
thlcgwasm(hlcg).a_op_loc_stack(current_asmdata.CurrAsmList,op,right.resultdef,right.location)
end
else
begin
{ must be handled via a helper }
if torddef(resultdef).ordtype=u64bit then
internalerror(2011010416);
if (torddef(resultdef).ordtype<>u32bit) then
begin
isu32int:=false;
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,right.resultdef,right.location);
end
else
begin
isu32int:=true;
if left.location.loc=LOC_CONSTANT then
thlcgwasm(hlcg).a_load_const_stack(current_asmdata.CurrAsmList,s64inttype,left.location.value,R_INTREGISTER)
else
begin
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
thlcgwasm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,u32inttype,s64inttype,false);
end;
if right.location.loc=LOC_CONSTANT then
thlcgwasm(hlcg).a_load_const_stack(current_asmdata.CurrAsmList,s64inttype,right.location.value,R_INTREGISTER)
else
begin
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,right.resultdef,right.location);
thlcgwasm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,u32inttype,s64inttype,false);
end;
end;
if isu32int or
(torddef(resultdef).ordtype=s64bit) then
begin
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_i64_rem_s));
thlcgwasm(hlcg).decstack(current_asmdata.CurrAsmList,1);
end
else
begin
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_i32_rem_s));
thlcgwasm(hlcg).decstack(current_asmdata.CurrAsmList,1);
end;
if isu32int then
thlcgwasm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,s64inttype,u32inttype,false);
end;
thlcgwasm(hlcg).a_load_stack_reg(current_asmdata.CurrAsmList,resultdef,location.register);
if (cs_check_overflow in current_settings.localswitches) and
is_signed(resultdef) then
begin
{ the JVM raises an exception for integer div-iby-zero -> only
overflow in case left is low(inttype) and right is -1 ->
check by adding high(inttype) to left and and'ing with right
-> result is -1 only in case above conditions are fulfilled)
}
tmpreg:=hlcg.getintregister(current_asmdata.CurrAsmList,resultdef);
hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,resultdef,true);
hlcg.a_op_const_reg_reg(current_asmdata.CurrAsmList,OP_ADD,resultdef,torddef(resultdef).high,right.location.register,tmpreg);
hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,resultdef,true);
hlcg.a_op_reg_reg(current_asmdata.CurrAsmList,OP_AND,resultdef,left.location.register,tmpreg);
current_asmdata.getjumplabel(lab);
hlcg.a_cmp_const_reg_label(current_asmdata.CurrAsmList,resultdef,OC_NE,-1,tmpreg,lab);
hlcg.g_call_system_proc(current_asmdata.CurrAsmList,'fpc_overflow',[],nil);
hlcg.a_label(current_asmdata.CurrAsmList,lab);
end;
end;
{*****************************************************************************
twasmshlshrnode
*****************************************************************************}
procedure twasmshlshrnode.pass_generate_code;
var
op : topcg;
begin
secondpass(left);
secondpass(right);
location_reset(location,LOC_REGISTER,left.location.size);
location.register:=hlcg.getintregister(current_asmdata.CurrAsmList,resultdef);
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,right.resultdef,right.location);
thlcgwasm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,right.resultdef,left.resultdef,false);
if nodetype=shln then
op:=OP_SHL
else
op:=OP_SHR;
thlcgwasm(hlcg).a_op_stack(current_asmdata.CurrAsmList,op,resultdef);
thlcgwasm(hlcg).a_load_stack_reg(current_asmdata.CurrAsmList,resultdef,location.register);
end;
{*****************************************************************************
twasmnotnode
*****************************************************************************}
procedure twasmnotnode.second_boolean;
begin
secondpass(left);
if not(left.location.loc in [LOC_REGISTER,LOC_CREGISTER]) then
hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,left.resultdef,false);
location_reset(location,LOC_REGISTER,left.location.size);
location.register:=cg.getintregister(current_asmdata.CurrAsmList,location.size);
{ perform the NOT operation }
hlcg.a_op_reg_reg(current_asmdata.CurrAsmList,OP_NOT,left.resultdef,left.location.register,location.register);
end;
{*****************************************************************************
twasmunaryminustnode
*****************************************************************************}
procedure twasmunaryminusnode.second_float;
var
opc: tasmop;
begin
secondpass(left);
location_reset(location,LOC_FPUREGISTER,def_cgsize(resultdef));
location.register:=hlcg.getfpuregister(current_asmdata.CurrAsmList,resultdef);
thlcgwasm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
if (tfloatdef(left.resultdef).floattype=s32real) then
opc:=a_f32_neg
else
opc:=a_f64_neg;
current_asmdata.CurrAsmList.concat(taicpu.op_none(opc));
thlcgwasm(hlcg).a_load_stack_reg(current_asmdata.CurrAsmList,resultdef,location.register);
end;
begin
cmoddivnode:=twasmmoddivnode;
cshlshrnode:=twasmshlshrnode;
cnotnode:=twasmnotnode;
cunaryminusnode:=twasmunaryminusnode;
end.
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