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Hopefully handle the destructors well on Linux

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This commit is contained in:
rtldg 2025-03-02 07:47:27 +00:00
parent ca591ee2fd
commit 82cdcf5ad3
1 changed files with 8 additions and 6 deletions
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14
core/sourcehook/sourcehook_hookmangen_x86_64.cpp
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@ -427,7 +427,8 @@ namespace SourceHook
for (int i = 0; i < 3; i++) {
// Shadow space
MSVC_ONLY(m_HookFunc.sub(rsp, 40));
GCC_ONLY(m_HookFunc.sub(rsp, 8)); // Align to 16 bytes...
// We need to keep it aligned to 16 bytes on Linux too...
GCC_ONLY(m_HookFunc.sub(rsp, 8));
// First param is this
MSVC_ONLY(m_HookFunc.lea(rcx, rbp(v_ret_vals[i])));
@ -437,7 +438,8 @@ namespace SourceHook
m_HookFunc.mov(r8, reinterpret_cast<std::uint64_t>(retInfo.pNormalCtor));
m_HookFunc.call(r8);
GCC_ONLY(m_HookFunc.add(rsp, 8)); // Free alignment...
// Free Linux stack alignment
GCC_ONLY(m_HookFunc.add(rsp, 8));
// Free shadow space
MSVC_ONLY(m_HookFunc.add(rsp, 40));
}
@ -483,7 +485,6 @@ namespace SourceHook
CallEndContext(v_pContext);
// Call destructors of byval object params which have a destructor
#if SH_COMP == SH_COMP_MSVC
int stack_index = 1; // account this pointer
if ((retInfo.flags & PassInfo::PassFlag_RetMem) == PassInfo::PassFlag_RetMem) {
// Non trivial return value
@ -493,6 +494,8 @@ namespace SourceHook
for (int i = 0; i < m_Proto.GetNumOfParams(); ++i, ++stack_index) {
// Shadow space
MSVC_ONLY(m_HookFunc.sub(rsp, 40));
// We need to keep it aligned to 16 bytes on Linux too...
GCC_ONLY(m_HookFunc.sub(rsp, 8));
const IntPassInfo &pi = m_Proto.GetParam(i);
if (pi.type == PassInfo::PassType_Object && (pi.flags & PassInfo::PassFlag_ODtor) &&
@ -505,12 +508,11 @@ namespace SourceHook
m_HookFunc.call(rax);
}
// Free Linux stack alignment
GCC_ONLY(m_HookFunc.add(rsp, 8));
// Free shadow space
MSVC_ONLY(m_HookFunc.add(rsp, 40));
}
#else
static_assert(false, "Missing parameters destruction for linux");
#endif
DoReturn(v_ret_ptr, v_memret_ptr);
// From then on, rax cannot be used as a general register