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Back out part of the changes in rev 1.86. Remove npxdna_notset(), and instead 

have the DNA trap handler point to npxdna_empty() by default.  This way, if
there are no npx devices found and MATH_EMULATE is not configured, we go back
to the old behavior of issuing a SIGKILL and printing:
pid XXX killed due to lack of floating point
rather than panicking.
This commit is contained in:
mycroft 2004-07-06 01:30:08 +00:00
parent 1a06ef7694
commit 1e3cb7e7ec
1 changed files with 3 additions and 15 deletions
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18
sys/arch/i386/isa/npx.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: npx.c,v 1.105 2004/06/23 12:24:01 yamt Exp $ */
/* $NetBSD: npx.c,v 1.106 2004/07/06 01:30:08 mycroft Exp $ */
/*-
* Copyright (c) 1991 The Regents of the University of California.
@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: npx.c,v 1.105 2004/06/23 12:24:01 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: npx.c,v 1.106 2004/07/06 01:30:08 mycroft Exp $");
#if 0
#define IPRINTF(x) printf x
@ -137,7 +137,6 @@ __KERNEL_RCSID(0, "$NetBSD: npx.c,v 1.105 2004/06/23 12:24:01 yamt Exp $");
#define clts() __asm("clts")
#define stts() lcr0(rcr0() | CR0_TS)
static int npxdna_notset(struct cpu_info *);
static int npxdna_s87(struct cpu_info *);
#ifdef I686_CPU
static int npxdna_xmm(struct cpu_info *);
@ -174,12 +173,6 @@ fpu_save(union savefpu *addr)
fnsave(&addr->sv_87);
}
static int
npxdna_notset(struct cpu_info *ci)
{
panic("npxdna vector not initialized");
}
static int
npxdna_empty(struct cpu_info *ci)
{
@ -190,7 +183,7 @@ npxdna_empty(struct cpu_info *ci)
}
int (*npxdna_func)(struct cpu_info *) = npxdna_notset;
int (*npxdna_func)(struct cpu_info *) = npxdna_empty;
/*
* This calls i8259_* directly, but currently we can count on systems
@ -296,11 +289,6 @@ npxprobe1(bus_space_tag_t iot, bus_space_handle_t ioh, int irq)
idt[16] = save_idt_npxtrap;
write_eflags(save_eflags);
if ((rv == NPX_NONE) || (rv == NPX_BROKEN)) {
/* No FPU. Handle it here, npxattach won't be called */
npxdna_func = npxdna_empty;
}
return (rv);
}