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Improve constant searching algorithm to match non sign-extended values too 

Closes #2824
pull/2842/head
Duncan Ogilvie 2022-02-24 15:01:41 +01:00
parent 048825e30a
commit a216adb21c
1 changed files with 20 additions and 0 deletions
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20
src/dbg/commands/cmd-searching.cpp
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@ -419,6 +419,26 @@ static bool cbRefFind(Zydis* disasm, BASIC_INSTRUCTION_INFO* basicinfo, REFINFO*
duint value = basicinfo->value.value;
if(value >= start && value <= end)
found = true;
// Workaround for sign-extended values, see: https://github.com/x64dbg/x64dbg/issues/2824
if((value & ArchValue(0x80000000, 0x800000000000)) != 0)
{
switch(basicinfo->value.size)
{
case size_byte:
value &= 0xFF;
break;
case size_word:
value &= 0xFFFF;
break;
case size_dword:
value &= 0xFFFFFFFF;
break;
default:
break;
}
if(value >= start && value <= end)
found = true;
}
}
if((basicinfo->type & TYPE_MEMORY) == TYPE_MEMORY)
{