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fix highest bit calculation/lookup

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This commit is contained in:
Dark Byte 2023-11-24 23:39:28 +01:00
parent 8f84d534fb
commit 3aa5425fec
1 changed files with 14 additions and 10 deletions
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24
Cheat Engine/disassemblerarm64.pas
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@ -2686,13 +2686,13 @@ function highestbit(v: dword): integer;
var i: integer;
begin
case v of
$1ff: exit(9);
$3fff: exit(14);
$7fff: exit(15);
$ffff: exit(16);
$1ffff: exit(17);
$3ffff: exit(18);
$7ffff: exit(19);
$1ff: exit(8);
$3fff: exit(13);
$7fff: exit(14);
$ffff: exit(15);
$1ffff: exit(16);
$3ffff: exit(17);
$7ffff: exit(18);
$7ffffff: exit(26);
else
begin
@ -2951,7 +2951,7 @@ end;
function TArm64Instructionset.ParseParametersForDisassembler(plist: TAParametersList): boolean;
var
i: integer;
i,j: integer;
v,v2,v3: dword;
qv,qv2: qword;
@ -3214,8 +3214,12 @@ begin
pt_label:
begin
v:=(opcode shr plist[i].offset) and plist[i].maxval;
v:=v shl 2;
qv2:=SignExtend(v,highestbit(plist[i].maxval)+2);
j:=highestbit(plist[i].maxval);
qv2:=SignExtend(v,j);
qv2:=qv2 shl 2;
j:=highestbit(plist[i].maxval);
qv:=address+qv2;