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[nce] more arm macos fixes

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2025-08-30 20:22:24 +00:00 • committed by crueter
parent 04d9bea6dd
commit 45e47c67f0
1 changed files with 6 additions and 16 deletions
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22
src/core/arm/nce/arm_nce.cpp
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@ -40,11 +40,7 @@ constexpr u32 StackSize = 128_KiB;
} // namespace
void* ArmNce::RestoreGuestContext(void* raw_context) {
// Retrieve the host context.
auto& host_ctx = static_cast<ucontext_t*>(raw_context)->uc_mcontext;
// Retrieve the host floating point state.
auto* fpctx = GetFloatingPointState(host_ctx);
CTX_DECLARE(raw_context);
// Restore all guest state except tpidr_el0.
// Thread-local parameters will be located in x9.
auto* tpidr = reinterpret_cast<NativeExecutionParameters*>(CTX_X(9));
@ -66,12 +62,7 @@ void* ArmNce::RestoreGuestContext(void* raw_context) {
}
void ArmNce::SaveGuestContext(GuestContext* guest_ctx, void* raw_context) {
// Retrieve the host context.
auto& host_ctx = static_cast<ucontext_t*>(raw_context)->uc_mcontext;
// Retrieve the host floating point state.
auto* fpctx = GetFloatingPointState(host_ctx);
CTX_DECLARE(raw_context);
// Save all guest registers except tpidr_el0.
std::memcpy(guest_ctx->cpu_registers.data(), &CTX_X(0), sizeof(guest_ctx->cpu_registers));
std::memcpy(guest_ctx->vector_registers.data(), &CTX_Q(0), sizeof(guest_ctx->vector_registers));
@ -95,16 +86,15 @@ void ArmNce::SaveGuestContext(GuestContext* guest_ctx, void* raw_context) {
}
bool ArmNce::HandleFailedGuestFault(GuestContext* guest_ctx, void* raw_info, void* raw_context) {
auto& host_ctx = static_cast<ucontext_t*>(raw_context)->uc_mcontext;
CTX_DECLARE(raw_context);
auto* info = static_cast<siginfo_t*>(raw_info);
// We can't handle the access, so determine why we crashed.
const bool is_prefetch_abort = host_ctx.pc == reinterpret_cast<u64>(info->si_addr);
auto const is_prefetch_abort = CTX_PC == reinterpret_cast<u64>(info->si_addr);
// For data aborts, skip the instruction and return to guest code.
// This will allow games to continue in many scenarios where they would otherwise crash.
if (!is_prefetch_abort) {
host_ctx.pc += 4;
CTX_PC += 4;
return true;
}
@ -129,7 +119,7 @@ bool ArmNce::HandleGuestAlignmentFault(GuestContext* guest_ctx, void* raw_info,
auto& memory = guest_ctx->system->ApplicationMemory();
// Match and execute an instruction.
if (auto next_pc = MatchAndExecuteOneInstruction(memory, raw_context); next_pc) {
host_ctx.pc = *next_pc;
CTX_PC = *next_pc;
return true;
}
// We couldn't handle the access.