mirror/rpcs3
1
0
Fork 0
mirror of https://github.com/RPCS3/rpcs3.git synced 2024-11-16 23:17:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Debugger: fill stack guard with STACKGRD

Browse Source
This commit is contained in:
Nekotekina 2020-11-17 16:21:40 +03:00
parent a4e28df9cf
commit 68931b4c43
1 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
rpcs3/Emu/Memory/vm.cpp
View File

@ -1104,6 +1104,28 @@ namespace vm
return result;
});
// Fill stack guards with STACKGRD
if (this->flags & 0x10)
{
auto fill64 = [](u8* ptr, u64 data, std::size_t count)
{
u64* target = reinterpret_cast<u64*>(ptr);
#ifdef _MSC_VER
__stosq(target, data, count);
#else
for (std::size_t i = 0; i < count; i++)
{
target[i] = data;
}
#endif
};
const u32 enda = addr + size - 4096;
fill64(g_sudo_addr + addr, "STACKGRD"_u64, 4096 / sizeof(u64));
fill64(g_sudo_addr + enda, "UNDERFLO"_u64, 4096 / sizeof(u64));
}
// Add entry
m_map[addr] = std::make_pair(size, std::move(shm));
@ -1293,6 +1315,13 @@ namespace vm
// Unmap "real" memory pages
verify(HERE), size == _page_unmap(addr, size, found->second.second.get());
// Clear stack guards
if (flags & 0x10)
{
std::memset(g_sudo_addr + addr - 4096, 0, 4096);
std::memset(g_sudo_addr + addr + size, 0, 4096);
}
// Remove entry
m_map.erase(found);