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+ implemented the 'on' node code generation (try except 'on' ...) for the

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branchful exceptions mode
This commit is contained in:
Nikolay Nikolov 2021-10-05 03:25:03 +03:00
parent a5dcd1c44d
commit 464b3ebbed
1 changed files with 18 additions and 8 deletions
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26
compiler/wasm32/nwasmflw.pas
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@ -603,8 +603,8 @@ implementation
flowcontrol:=[fc_inflowcontrol]+trystate.oldflowcontrol*[fc_catching_exceptions];
{ on statements }
//if assigned(right) then
// secondpass(right);
if assigned(right) then
secondpass(right);
afteronflowcontrol:=flowcontrol;
@ -1407,7 +1407,9 @@ implementation
exceptvarsym : tlocalvarsym;
exceptlocdef: tdef;
exceptlocreg: tregister;
oldRaiseBr: Integer;
begin
oldRaiseBr:=0;
location_reset(location,LOC_VOID,OS_NO);
cexceptionstatehandler.begin_catch(current_asmdata.CurrAsmList,excepttype,nil,exceptlocdef,exceptlocreg);
@ -1428,21 +1430,29 @@ implementation
{ in the case that another exception is risen
we've to destroy the old one, so create a new
exception frame for the catch-handler }
//current_asmdata.CurrAsmList.concat(taicpu.op_none(a_try));
//thlcgwasm(hlcg).incblock;
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_block));
thlcgwasm(hlcg).incblock;
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_block));
thlcgwasm(hlcg).incblock;
oldRaiseBr:=thlcgwasm(hlcg).raiseBr;
thlcgwasm(hlcg).raiseBr:=thlcgwasm(hlcg).br_blocks;
if assigned(right) then
secondpass(right);
hlcg.g_call_system_proc(current_asmdata.CurrAsmList,'fpc_doneexception',[],nil).resetiftemp;
current_asmdata.CurrAsmList.concat(taicpu.op_const(a_br,2));
current_asmdata.CurrAsmList.concat(taicpu.op_const(a_br,3));
//current_asmdata.CurrAsmList.concat(taicpu.op_sym(a_catch,current_asmdata.WeakRefAsmSymbol(FPC_EXCEPTION_TAG_SYM,AT_WASM_EXCEPTION_TAG)));
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_end_block));
thlcgwasm(hlcg).decblock;
thlcgwasm(hlcg).raiseBr:=oldRaiseBr;
hlcg.g_call_system_proc(current_asmdata.CurrAsmList,'fpc_clear_exception_flag',[],nil).resetiftemp;
hlcg.g_call_system_proc(current_asmdata.CurrAsmList,'fpc_raise_nested',[],nil).resetiftemp;
//current_asmdata.CurrAsmList.concat(taicpu.op_none(a_end_try));
//thlcgwasm(hlcg).decblock;
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_end_block));
thlcgwasm(hlcg).decblock;
{ clear some stuff }
if assigned(exceptvarsym) then