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Begin implementing conversions to and from 64-bit types.

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Some conversions are implemented, but others are not yet.
This commit is contained in:
Stephen Heumann 2021-01-31 08:37:21 -06:00
parent 807a143e51
commit e8497c7b8f
1 changed files with 110 additions and 0 deletions
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110
Gen.pas
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@ -1175,33 +1175,45 @@ const {note: these constants list all legal }
cComp = $08;
cExtended = $09;
cVoid = $0B;
cQuad = $0C;
cUQuad = $0D;
byteToWord = $02;
byteToUword = $03;
byteToLong = $04;
byteToUlong = $05;
byteToQuad = $0C;
byteToUQuad = $0D;
byteToReal = $06;
byteToDouble = $07;
ubyteToLong = $14;
ubyteToUlong = $15;
ubyteToQuad = $1C;
ubyteToUQuad = $1D;
ubyteToReal = $16;
ubyteToDouble = $17;
wordToByte = $20;
wordToUByte = $21;
wordToLong = $24;
wordToUlong = $25;
wordToQuad = $2C;
wordToUQuad = $2D;
wordToReal = $26;
wordToDouble = $27;
uwordToByte = $30;
uwordToUByte = $31;
uwordToLong = $34;
uwordToUlong = $35;
uwordToQuad = $3C;
uwordToUQuad = $3D;
uwordToReal = $36;
uwordToDouble = $37;
longTobyte = $40;
longToUbyte = $41;
longToWord = $42;
longToUword = $43;
longToQuad = $4C;
longToUQuad = $4D;
longToReal = $46;
longToDouble = $47;
longToVoid = $4B;
@ -1209,6 +1221,8 @@ const {note: these constants list all legal }
ulongToUbyte = $51;
ulongToWord = $52;
ulongToUword = $53;
ulongToQuad = $5C;
ulongToUQuad = $5D;
ulongToReal = $56;
ulongToDouble = $57;
ulongToVoid = $5B;
@ -1218,6 +1232,8 @@ const {note: these constants list all legal }
realToUword = $63;
realToLong = $64;
realToUlong = $65;
realToQuad = $6C;
realToUQuad = $6D;
realToVoid = $6B;
doubleTobyte = $70;
doubleToUbyte = $71;
@ -1225,6 +1241,26 @@ const {note: these constants list all legal }
doubleToUword = $73;
doubleToLong = $74;
doubleToUlong = $75;
doubleToQuad = $7C;
doubleToUQuad = $7D;
quadToByte = $C0;
quadToUByte = $C1;
quadToWord = $C2;
quadToUword = $C3;
quadToLong = $C4;
quadToULong = $C5;
quadToReal = $C6;
quadToDouble = $C7;
quadToVoid = $CB;
uquadToByte = $D0;
uquadToUByte = $D1;
uquadToWord = $D2;
uquadToUword = $D3;
uquadToLong = $D4;
uquadToULong = $D5;
uquadToReal = $D6;
uquadToDouble = $D7;
uquadToVoid = $DB;
var
fromReal: boolean; {are we converting from a real?}
@ -1369,6 +1405,80 @@ else if op^.q in [longToVoid,ulongToVoid] then begin
gLong.where := A_X;
end; {if}
end {else if}
else if op^.q in [ubyteToQuad,ubyteToUQuad,uwordToQuad,uwordToUQuad] then begin
GenNative(m_ldy_imm, immediate, 0, nil, 0);
GenImplied(m_phy);
GenImplied(m_phy);
GenImplied(m_phy);
GenImplied(m_pha);
end {else if}
else if op^.q in [ulongToQuad,ulongToUQuad] then begin
if gLong.where = A_X then begin
GenNative(m_pea, immediate, 0, nil, 0);
GenNative(m_pea, immediate, 0, nil, 0);
GenImplied(m_phx);
GenImplied(m_pha);
end {if}
else if gLong.where = constant then begin
GenNative(m_pea, immediate, 0, nil, 0);
GenNative(m_pea, immediate, 0, nil, 0);
GenNative(m_pea, immediate, long(gLong.lval).msw, nil, 0);
GenNative(m_pea, immediate, long(gLong.lval).lsw, nil, 0);
end {else if}
else {if gLong.where = onStack then} begin
GenImplied(m_pla);
GenImplied(m_plx);
GenNative(m_pea, immediate, 0, nil, 0);
GenNative(m_pea, immediate, 0, nil, 0);
GenImplied(m_phx);
GenImplied(m_pha);
end; {else}
end {else if}
else if op^.q in [quadToWord,uquadToWord,quadToUWord,uquadToUWord] then begin
GenImplied(m_pla);
GenImplied(m_plx);
GenImplied(m_ply);
GenImplied(m_ply);
GenImplied(m_tay);
end {else if}
else if op^.q in [quadToUByte,uquadToUByte] then begin
GenImplied(m_pla);
GenImplied(m_plx);
GenImplied(m_ply);
GenImplied(m_ply);
GenNative(m_and_imm, immediate, $00FF, nil, 0);
end {else if}
else if op^.q in [quadToByte,uquadToByte] then begin
GenImplied(m_pla);
GenImplied(m_plx);
GenImplied(m_ply);
GenImplied(m_ply);
GenNative(m_and_imm, immediate, $00FF, nil, 0);
lab1 := GenLabel;
GenNative(m_bit_imm, immediate, $0080, nil, 0);
GenNative(m_beq, relative, lab1, nil, 0);
GenNative(m_ora_imm, immediate, $FF00, nil, 0);
GenLab(lab1);
end {else if}
else if op^.q in [quadToLong,uquadToLong,quadToULong,uquadToULong] then begin
GenImplied(m_pla);
GenImplied(m_plx);
GenImplied(m_ply);
GenImplied(m_ply);
if (lLong.preference & A_X) <> 0 then
gLong.where := A_X
else begin
gLong.where := onStack;
GenImplied(m_phx);
GenImplied(m_pha);
end; {else}
end {else if}
else if op^.q in [quadToVoid,uquadToVoid] then begin
GenImplied(m_tsc);
GenImplied(m_clc);
GenNative(m_adc_imm, immediate, 8, nil, 0);
GenImplied(m_tcs);
end {else if}
else if (op^.q & $000F) = cVoid then
{do nothing}
else if lLong.preference & gLong.where = 0 then begin