Commit b51ccce8 authored by multrus's avatar multrus
Browse files

set correct UFE bit for AArch64

parent f517c3e0

lib_debug/flp_debug.h

+4 −4
Original line number Diff line number Diff line
@@ -67,8 +67,8 @@ static inline void enable_denorm_trap(void) { 
    __asm__ volatile("mrs %0, fpcr" : "=r"(fpcr));

    // disable sits 24(FZ) & 25(DN) --> allow denormals to happen

    fpcr &= ~((1ull<<24)|(1ull<<25));

    // set bit 3 (UFE) to unmask underflow exceptions

    fpcr |=  (1ull<<3);

    // set bit 11 (UFE) to unmask underflow exceptions

    fpcr |=  (1ull<<11);

    __asm__ volatile("msr fpcr, %0" :: "r"(fpcr));



#else
@@ -91,8 +91,8 @@ static inline void disable_denorm_trap(void) { 
    // AArch64 (Apple Silicon)

    uint64_t fpcr;

    __asm__ volatile("mrs %0, fpcr" : "=r"(fpcr));

    // delete bit 3 (UFE), set bits 24/25 (FZ/DN) again

    fpcr &= ~(1ull<<3);

    // delete bit 11 (UFE), set bits 24/25 (FZ/DN) again

    fpcr &= ~(1ull<<11);

    fpcr |=  (1ull<<24)|(1ull<<25);

    __asm__ volatile("msr fpcr, %0" :: "r"(fpcr));