ref: 41e27b2d10c6a60c49931332e8677438736a1e36
dir: /Solaris/sparc/include/fpuctl.h/
/* This code is a little awkward. If somebody who understands Solaris better would tell me an idiomatic way to invoke equivalent behavior, I'd be grateful. [email protected] */ /* * accrued exception bits in the fsr */ #define FPAINEX (1<<5) #define FPAOVFL (1<<8) #define FPAUNFL (1<<7) #define FPAZDIV (1<<6) #define FPAINVAL (1<<9) /* * exception enable bits in the fsr */ #define FPINEX (1<<23) #define FPOVFL (1<<26) #define FPUNFL (1<<25) #define FPZDIV (1<<24) #define FPINVAL (1<<27) /* * rounding */ #define FPRMASK (3<<30) #define FPRNR (0<<30) #define FPRNINF (3<<30) #define FPRPINF (2<<30) #define FPRZ (1<<30) /* * precision */ #define FPPDBL 0 #define FPFCR (FPRMASK|FPINEX|FPOVFL|FPUNFL|FPZDIV|FPINVAL) #define FPFSR (FPAINEX|FPAOVFL|FPAUNFL|FPAZDIV|FPAINVAL) static ulong getfcr(void) { ulong v; asm(" st %fsr, [%fp-8]"); return v; } static void setfcr(ulong v) { ulong vv; vv = (getfcr() & ~FPFCR) | (v & FPFCR); asm(" ld [%fp-4], %fsr"); } static ulong getfsr(void) { ulong v; asm(" st %fsr, [%fp-8]"); return v; } static void setfsr(ulong v) { ulong vv; vv = (getfsr() & ~FPFSR) | (v & FPFSR); asm(" ld [%fp-4], %fsr"); }