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* AIX requires record data that partially fills a register to be

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left-aligned. Other targets only require this if the total size of the
    parameter was > 8 bytes (this last part used to be ensured by
    the ppc64-specific version of a_load_ref_cgpara() that was removed in
    r20962)

git-svn-id: trunk@21008 -
This commit is contained in:
Jonas Maebe 2012-04-23 21:14:38 +00:00
parent c664a1b921
commit d08a17b763
1 changed files with 15 additions and 2 deletions
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17
compiler/powerpc64/cpupara.pas
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@ -299,6 +299,7 @@ var
paracgsize: tcgsize;
parashift : byte;
adjusttail: boolean;
begin
{$IFDEF extdebug}
@ -395,8 +396,8 @@ begin
paraloc^.loc := LOC_VOID;
end else
internalerror(2005011310);
adjusttail:=paralen>8;
{ can become < 0 for e.g. 3-byte records }
while (paralen > 0) do begin
paraloc := hp.paraloc[side].add_location;
{ In case of po_delphi_nested_cc, the parent frame pointer
@ -411,7 +412,19 @@ begin
{ make sure we don't lose whether or not the type is signed }
if (paracgsize <> OS_NO) and (paradef.typ <> orddef) then
paracgsize := int_cgsize(paralen);
if (paracgsize in [OS_NO,OS_128,OS_S128]) then
{ aix requires that record data (including partial data) stored in
parameter registers is left-aligned. Other targets only do this if
the total size of the parameter was > 8 bytes. }
if (((target_info.system in systems_aix) and
(paradef.typ = recorddef)) or
adjusttail) and
(paralen < sizeof(aint)) then
begin
paraloc^.shiftval := (sizeof(aint)-paralen)*(-8);
paraloc^.size := OS_INT;
end
else if (paracgsize in [OS_NO,OS_128,OS_S128]) then
paraloc^.size := OS_INT
else
paraloc^.size := paracgsize;