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Protect Windows guest red zones when emulating VRSQRTPS

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This commit is contained in:
nmzik
2026-09-16 06:30:20 +02:00
parent 77680ce9d2
commit 86e5e01403
8 changed files with 700 additions and 507 deletions
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src/loader/redZonePatcher.h
+6 -3
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@@ -14,7 +14,7 @@ namespace Loader {
struct RedZonePatchResult {
uint64_t function_count = 0;
uint64_t instruction_count = 0;
uint64_t red_zone_function_count = 0;
uint64_t red_zone_function_count = 0;
uint64_t memory_instruction_count = 0;
uint64_t short_memory_instruction_count = 0;
uint64_t patched_memory_instruction_count = 0;
@@ -22,14 +22,17 @@ struct RedZonePatchResult {
uint64_t control_flow_memory_instruction_count = 0;
uint64_t unrelocatable_memory_instruction_count = 0;
uint64_t indirect_red_zone_function_count = 0;
uint64_t reciprocal_sqrt_instruction_count = 0;
};
void RegisterRedZonePatchModule(void* module_ptr, uint64_t module_size, void* trampoline_area_ptr,
uint64_t trampoline_area_size);
void UnregisterRedZonePatchModule(void* module_ptr);
RedZonePatchResult PatchRedZoneMemoryInstructions(uint64_t segment_addr, uint64_t segment_size,
std::span<const uintptr_t> function_starts);
// Analyze and protect fault sites before replacing reciprocal roots with traps.
RedZonePatchResult PatchGuestInstructions(uint64_t segment_addr, uint64_t segment_size,
std::span<const uintptr_t> function_starts,
bool protect_memory, bool emulate_rsqrt);
bool DecodeEhFrameFunctionStarts(uint64_t eh_frame_header_addr, uint64_t eh_frame_header_size,
std::vector<uintptr_t>* function_starts);