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loader: preserve guest root stack frame

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This commit is contained in:
nmzik
2026-08-03 03:52:38 +02:00
parent 53feb6cb19
commit 2e9e2ae566
2 changed files with 21 additions and 8 deletions
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src/kernel/pthread.cpp
+5 -3
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@@ -876,9 +876,11 @@ bool TestGuestStackOwnerLifecycle(uint64_t* first_address, uint64_t* second_addr
static KYTY_SYSV_ABI void* RunOnGuestStack(void* arg, pthread_entry_func_t func, void* stack_top) {
#if defined(__x86_64__) || defined(_M_X64)
void* ret = nullptr;
const auto guest_rsp = reinterpret_cast<uintptr_t>(stack_top) & ~static_cast<uintptr_t>(0x0f);
const auto guest_rbp = guest_rsp - 4u * sizeof(uint64_t);
void* ret = nullptr;
const auto aligned_stack_top =
reinterpret_cast<uintptr_t>(stack_top) & ~static_cast<uintptr_t>(0x0f);
const auto guest_rsp = aligned_stack_top - 2u * sizeof(uintptr_t);
const auto guest_rbp = guest_rsp;
auto* guest_root_frame = reinterpret_cast<uintptr_t*>(guest_rbp);
guest_root_frame[0] = 0;