X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=ia32rtools.git;a=blobdiff_plain;f=c_auto.h;h=84eb4e3347dc1ad58ad5b5a12717c2d76b4e1b48;hp=8ae2eeebd1de5f20602f3919683350befa36b8e8;hb=HEAD;hpb=193c11bf19ed55fc1af7a849383ad6912f08ad0a diff --git a/c_auto.h b/c_auto.h index 8ae2eee..84eb4e3 100644 --- a/c_auto.h +++ b/c_auto.h @@ -66,4 +66,40 @@ static inline int do_parity(unsigned int v) #define barrier() \ asm volatile("" ::: "memory") +/* gcc always emits vldr/vstr which requires alignment, + * so in some cases these unaligned helpers are needed */ +#ifdef __ARM_NEON__ + +static inline float float_load(u32 ptr) +{ + register float v asm("s0"); + + asm ("vld1.32 {d0[0]}, [%1]" + : "=t"(v) : "r"(ptr)); + + return v; +} + +static inline void float_store(float v, u32 ptr) +{ + register float v1 asm("s0") = v; + + asm ("vst1.32 {d0[0]}, [%1]" + : : "t"(v1), "r"(ptr) : "memory"); +} + +#else + +static inline float float_load(u32 ptr) +{ + return *(const float *)ptr; +} + +static inline void float_store(float v, u32 ptr) +{ + *(float *)ptr = v; +} + +#endif + // vim:ts=2:sw=2:expandtab