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GleeBug
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Merge pull request #78 from x64dbg/memory-breakpoint-tests 

Fix cross-page memory breakpoint page tracking
This commit is contained in:
Duncan Ogilvie 2026-04-13 18:04:45 +02:00 committed by GitHub
parent e0a457965f 95f66412b6
commit 1ee94ba319
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GPG Key ID: B5690EEEBB952194
1 changed files with 5 additions and 3 deletions
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8
GleeBug/Debugger.Process.Breakpoint.cpp
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@ -298,12 +298,13 @@ namespace GleeBug
}; };
std::vector<TempMemoryBreakpointData> breakpointData; std::vector<TempMemoryBreakpointData> breakpointData;
{ {
breakpointData.reserve(size / PAGE_SIZE); breakpointData.reserve(BYTES_TO_PAGES((address - PAGE_ALIGN(address)) + size));
TempMemoryBreakpointData tempData; TempMemoryBreakpointData tempData;
MemoryBreakpointData data; MemoryBreakpointData data;
data.Type = uint32(type); data.Type = uint32(type);
auto alignedAddress = PAGE_ALIGN(address); auto alignedAddress = PAGE_ALIGN(address);
for(auto page = alignedAddress; page < alignedAddress + ROUND_TO_PAGES(size); page += PAGE_SIZE) auto alignedEnd = PAGE_ALIGN(address + size - 1);
for(auto page = alignedAddress; page <= alignedEnd; page += PAGE_SIZE)
{ {
MEMORY_BASIC_INFORMATION mbi; MEMORY_BASIC_INFORMATION mbi;
if(!VirtualQueryEx(hProcess, LPCVOID(page), &mbi, sizeof(mbi))) if(!VirtualQueryEx(hProcess, LPCVOID(page), &mbi, sizeof(mbi)))
@ -382,7 +383,8 @@ namespace GleeBug
//delete the memory breakpoint from the pages //delete the memory breakpoint from the pages
bool success = true; bool success = true;
auto alignedAddress = PAGE_ALIGN(info.address); auto alignedAddress = PAGE_ALIGN(info.address);
for(auto page = alignedAddress; page < alignedAddress + ROUND_TO_PAGES(info.internal.memory.size); page += PAGE_SIZE) auto alignedEnd = PAGE_ALIGN(info.address + info.internal.memory.size - 1);
for(auto page = alignedAddress; page <= alignedEnd; page += PAGE_SIZE)
{ {
auto foundData = memoryBreakpointPages.find(page); auto foundData = memoryBreakpointPages.find(page);
if(foundData == memoryBreakpointPages.end()) if(foundData == memoryBreakpointPages.end())