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Catch `Unimplemented Flush' traps.

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This commit is contained in:
pk 1999-01-20 00:15:07 +00:00
parent 231a906c71
commit 565d3768e5
2 changed files with 35 additions and 4 deletions
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4
sys/arch/sparc/include/trap.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: trap.h,v 1.10 1996/12/01 23:19:00 pk Exp $ */
/* $NetBSD: trap.h,v 1.11 1999/01/20 00:15:08 pk Exp $ */
/*
* Copyright (c) 1992, 1993
@ -88,7 +88,7 @@
/* 0x20 unused */
/* through 0x23 unused */
#define T_CPDISABLED 0x24 /* (5) coprocessor instr while disabled */
/* 0x25 unused */
#define T_UNIMPLFLUSH 0x25 /* Unimplemented FLUSH */
/* through 0x27 unused */
#define T_CPEXCEPTION 0x28 /* (9) coprocessor exception */
/* 0x29 unused */

35
sys/arch/sparc/sparc/trap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.78 1998/12/14 16:18:46 kleink Exp $ */
/* $NetBSD: trap.c,v 1.79 1999/01/20 00:15:07 pk Exp $ */
/*
* Copyright (c) 1996
@ -374,6 +374,7 @@ badtrap:
break; /* the work is all in userret() */
case T_ILLINST:
case T_UNIMPLFLUSH:
if ((n = emulinstr(pc, tf)) == 0) {
ADVANCE;
break;
@ -415,8 +416,37 @@ badtrap:
fpu_cleanup(p, fs);
break;
}
#if NEW
simple_lock(&cpuinfo.fplock);
if (cpuinfo.fpproc != p) { /* we do not have it */
int mid = p->p_md.md_fpumid;
if (cpuinfo.fpproc != NULL) { /* someone else had it*/
savefpstate(cpuinfo.fpproc->p_md.md_fpstate);
cpuinfo.fpproc->p_md.md_fpumid = -1;
}
/*
* On MP machines, some of the other FPUs might
* still have our state. Tell the owning processor
* to save the process' FPU state.
*/
cpi = p->p_md.md_fpumid;
if (cpi != NULL) {
if (cpi->mid == cpuinfo.mid)
panic("FPU on module %d\n", mid);
simple_lock(&cpi->fplock);
simple_lock(&cpi->msg.lock);
cpi->msg.tag = XPMSG_SAVEFPU;
raise_ipi(cpi);
}
loadfpstate(fs);
cpuinfo.fpproc = p; /* now we do have it */
p->p_md.md_fpumid = cpuinfo.mid;
}
simple_unlock(&cpuinfo.fplock);
#else
if (cpuinfo.fpproc != p) { /* we do not have it */
int mid;
mid = p->p_md.md_fpumid;
if (cpuinfo.fpproc != NULL) { /* someone else had it*/
savefpstate(cpuinfo.fpproc->p_md.md_fpstate);
cpuinfo.fpproc->p_md.md_fpumid = -1;
@ -437,6 +467,7 @@ badtrap:
cpuinfo.fpproc = p; /* now we do have it */
p->p_md.md_fpumid = cpuinfo.mid;
}
#endif
tf->tf_psr |= PSR_EF;
break;
}