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Preliminary AltiVec support

This commit is contained in:
matt 2000-11-25 03:00:48 +00:00
parent 6b0877113f
commit 6d256b4cca
1 changed files with 18 additions and 3 deletions
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21
sys/arch/powerpc/powerpc/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.30 2000/11/24 21:49:06 tsubai Exp $ */
/* $NetBSD: trap.c,v 1.31 2000/11/25 03:00:48 matt Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -33,6 +33,7 @@
#include "opt_ddb.h"
#include "opt_ktrace.h"
#include "opt_altivec.h"
#include <sys/param.h>
#include <sys/proc.h>
@ -256,6 +257,15 @@ syscall_bad:
enable_fpu(p);
break;
#ifdef ALTIVEC
case EXC_VEC|EXC_USER:
if (vecproc)
save_vec(vecproc);
vecproc = p;
enable_vec(p);
break;
#endif
case EXC_AST|EXC_USER:
/* This is just here that we trap */
break;
@ -343,10 +353,15 @@ brain_damage:
(int)(p->p_sticks - sticks) * psratio);
}
/*
* If someone stole the fpu while we were away, disable it
* If someone stole the fp or vector unit while we were away,
* disable it
*/
if (p != fpuproc)
frame->srr1 &= ~PSL_FP;
#ifdef ALTIVEC
if (p != vecproc)
frame->srr1 &= ~PSL_VEC;
#endif
curcpu()->ci_schedstate.spc_curpriority = p->p_priority;
}
@ -360,7 +375,7 @@ child_return(arg)
tf->fixreg[FIRSTARG] = 0;
tf->fixreg[FIRSTARG + 1] = 1;
tf->cr &= ~0x10000000;
tf->srr1 &= ~PSL_FP; /* Disable FPU, as we can't be fpuproc */
tf->srr1 &= ~(PSL_FP|PSL_VEC); /* Disable FP & AltiVec, as we can't be them */
#ifdef KTRACE
if (KTRPOINT(p, KTR_SYSRET))
ktrsysret(p, SYS_fork, 0, 0);