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disable denormal exceptions on alpha

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Bill Currie 2001-11-21 21:47:00 +00:00
parent 8826bdd9dc
commit 0060c9cc91
1 changed files with 51 additions and 0 deletions
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51
qw/source/sv_sys_unix.c
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@ -63,12 +63,63 @@ qboolean stdin_ready;
server_static_t svs;
info_t **svs_info = &svs.info;
#ifdef __alpha__
static inline unsigned long
rdfpcr(void)
{
unsigned long tmp, ret;
#if defined(__alpha_cix__) || defined(__alpha_fix__)
__asm__ __volatile__ (
"ftoit $f0,%0\n\t"
"mf_fpcr $f0\n\t"
"ftoit $f0,%1\n\t"
"itoft %0,$f0"
: "=r"(tmp), "=r"(ret));
#else
__asm__ __volatile__ (
"stt $f0,%0\n\t"
"mf_fpcr $f0\n\t"
"stt $f0,%1\n\t"
"ldt $f0,%0"
: "=m"(tmp), "=m"(ret));
#endif
return ret;
}
static inline void
wrfpcr(unsigned long val)
{
unsigned long tmp;
#if defined(__alpha_cix__) || defined(__alpha_fix__)
__asm__ __volatile__ (
"ftoit $f0,%0\n\t"
"itoft %1,$f0\n\t"
"mt_fpcr $f0\n\t"
"itoft %0,$f0"
: "=&r"(tmp) : "r"(val));
#else
__asm__ __volatile__ (
"stt $f0,%0\n\t"
"ldt $f0,%1\n\t"
"mt_fpcr $f0\n\t"
"ldt $f0,%0"
: "=m"(tmp) : "m"(val));
#endif
}
#endif
void
Sys_Init (void)
{
#ifdef USE_INTEL_ASM
Sys_SetFPCW ();
#endif
#ifdef __alpha__
wrfpcr (rdfpcr () | 1L << 47);
#endif
}
static int do_stdin = 1;