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* don't generate pdata and xdata if there is neither a relevant prologue nor a handler

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This commit is contained in:
Sven/Sarah Barth 2024-11-08 23:27:35 +01:00
parent f2d44148fb
commit b67415d1a8
1 changed files with 88 additions and 79 deletions
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13
compiler/aarch64/agcpugas.pas
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@ -447,14 +447,21 @@ unit agcpugas;
if inprologue then if inprologue then
cgmessage(asmw_e_missing_endprologue); cgmessage(asmw_e_missing_endprologue);
{ only generate xdata and pdata if we have any
prologue or a handler is set }
unwinddata:=convert_unwinddata(sehlist); unwinddata:=convert_unwinddata(sehlist);
if unwinddata.size>0 then
begin
writebyte($E4); writebyte($E4);
{ fill up with NOPs } { fill up with NOPs }
while unwinddata.size mod 4<>0 do while unwinddata.size mod 4<>0 do
writebyte($E3); writebyte($E3);
end;
if (handlerflags<>0) or (unwinddata.size<>0) then
begin
{ note: we can pass Nil here, because in case of a LLVM { note: we can pass Nil here, because in case of a LLVM
backend this whole code shouldn't be required backend this whole code shouldn't be required
anyway } anyway }
@ -465,7 +472,7 @@ unit agcpugas;
tmplist.concat(tai_const.Create_rva_sym(lastsym.sym)); tmplist.concat(tai_const.Create_rva_sym(lastsym.sym));
tmplist.concat(tai_const.Create_rva_sym(xdatasym)); tmplist.concat(tai_const.Create_rva_sym(xdatasym));
new_section(tmplist,sec_rodata,xdatasym.name,0); new_section(tmplist,sec_rodata,xdatasym.name,sizeof(int32));
tmplist.concat(tai_symbol.Create(xdatasym,0)); tmplist.concat(tai_symbol.Create(xdatasym,0));
tmplist.concat(tai_comment.Create(strpnew('instr: '+tostr(instrcount)+', data: '+tostr(datacount)+', unwind: '+tostr(unwinddata.size)))); tmplist.concat(tai_comment.Create(strpnew('instr: '+tostr(instrcount)+', data: '+tostr(datacount)+', unwind: '+tostr(unwinddata.size))));
@ -526,7 +533,6 @@ unit agcpugas;
if cs_asm_source in init_settings.globalswitches then if cs_asm_source in init_settings.globalswitches then
tmplist.concat(tai_comment.create(strpnew(hexstr(unwindrec,8)))); tmplist.concat(tai_comment.create(strpnew(hexstr(unwindrec,8))));
end; end;
unwinddata.free;
if handlerflags<>0 then if handlerflags<>0 then
begin begin
@ -540,6 +546,9 @@ unit agcpugas;
end; end;
handlerdata:=nil; handlerdata:=nil;
end;
unwinddata.free;
sehlist.free; sehlist.free;
sehlist:=nil; sehlist:=nil;