Use native fpu exception handling

ergo720 · Aug 27, 2024 · 164e636 · 164e636
1 parent 0e73245
commit 164e636
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diff --git a/nboxkrnl/ki/ki.hpp b/nboxkrnl/ki/ki.hpp
@@ -12,6 +12,7 @@
 #define EXCEPTION_CHAIN_END reinterpret_cast<EXCEPTION_REGISTRATION_RECORD *>(EXCEPTION_CHAIN_END2)
 
 // cr0 flags
+#define CR0_NE (1 << 5) // numeric error
 #define CR0_TS (1 << 3) // task switched
 #define CR0_EM (1 << 2) // emulation
 #define CR0_MP (1 << 1) // monitor coprocessor

diff --git a/nboxkrnl/main.cpp b/nboxkrnl/main.cpp
@@ -25,6 +25,11 @@
 		xor ebp, ebp
 		mov esp, offset KiIdleThreadStack + KERNEL_STACK_SIZE - (SIZE FX_SAVE_AREA + SIZE KSTART_FRAME + SIZE KSWITCHFRAME)
 
+		// Update cr0
+		mov eax, cr0
+		or eax, CR0_NE
+		mov cr0, eax
+
 		// Initialize the CRT of the kernel executable
 		call InitializeCrt