subr_trap.c (28df158b49a85dec14d5799b7c24e9ba5f810187) subr_trap.c (03927d3c33689431ba2d9f74c15aa851d85bcb76)
1/*-
2 * Copyright (C) 1994, David Greenman
3 * Copyright (c) 1990, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * the University of Utah, and William Jolitz.
8 *

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40
41/*
42 * 386 Trap and System call handling
43 */
44
45#include "opt_clock.h"
46#include "opt_cpu.h"
47#include "opt_ddb.h"
1/*-
2 * Copyright (C) 1994, David Greenman
3 * Copyright (c) 1990, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * the University of Utah, and William Jolitz.
8 *

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40
41/*
42 * 386 Trap and System call handling
43 */
44
45#include "opt_clock.h"
46#include "opt_cpu.h"
47#include "opt_ddb.h"
48#include "opt_isa.h"
48#include "opt_ktrace.h"
49#include "opt_npx.h"
50#include "opt_trap.h"
51
52#include <sys/param.h>
53#include <sys/bus.h>
54#include <sys/systm.h>
55#include <sys/proc.h>

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93#include <sys/syslog.h>
94#include <machine/clock.h>
95#endif
96
97#include <machine/vm86.h>
98
99#include <ddb/ddb.h>
100
49#include "opt_ktrace.h"
50#include "opt_npx.h"
51#include "opt_trap.h"
52
53#include <sys/param.h>
54#include <sys/bus.h>
55#include <sys/systm.h>
56#include <sys/proc.h>

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94#include <sys/syslog.h>
95#include <machine/clock.h>
96#endif
97
98#include <machine/vm86.h>
99
100#include <ddb/ddb.h>
101
101#include "isa.h"
102
103#include <sys/sysctl.h>
104
105int (*pmath_emulate) __P((struct trapframe *));
106
107extern void trap __P((struct trapframe frame));
108extern int trapwrite __P((unsigned addr));
109extern void syscall2 __P((struct trapframe frame));
110extern void ast __P((struct trapframe frame));

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360 ucode = T_PAGEFLT;
361 break;
362
363 case T_DIVIDE: /* integer divide fault */
364 ucode = FPE_INTDIV;
365 i = SIGFPE;
366 break;
367
102#include <sys/sysctl.h>
103
104int (*pmath_emulate) __P((struct trapframe *));
105
106extern void trap __P((struct trapframe frame));
107extern int trapwrite __P((unsigned addr));
108extern void syscall2 __P((struct trapframe frame));
109extern void ast __P((struct trapframe frame));

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359 ucode = T_PAGEFLT;
360 break;
361
362 case T_DIVIDE: /* integer divide fault */
363 ucode = FPE_INTDIV;
364 i = SIGFPE;
365 break;
366
368#if NISA > 0
367#ifdef DEV_ISA
369 case T_NMI:
370#ifdef POWERFAIL_NMI
371#ifndef TIMER_FREQ
372# define TIMER_FREQ 1193182
373#endif
374 mtx_enter(&Giant, MTX_DEF);
375 if (time_second - lastalert > 10) {
376 log(LOG_WARNING, "NMI: power fail\n");

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393 kdb_trap (type, 0, &frame);
394 }
395#endif /* DDB */
396 goto out;
397 } else if (panic_on_nmi)
398 panic("NMI indicates hardware failure");
399 break;
400#endif /* POWERFAIL_NMI */
368 case T_NMI:
369#ifdef POWERFAIL_NMI
370#ifndef TIMER_FREQ
371# define TIMER_FREQ 1193182
372#endif
373 mtx_enter(&Giant, MTX_DEF);
374 if (time_second - lastalert > 10) {
375 log(LOG_WARNING, "NMI: power fail\n");

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392 kdb_trap (type, 0, &frame);
393 }
394#endif /* DDB */
395 goto out;
396 } else if (panic_on_nmi)
397 panic("NMI indicates hardware failure");
398 break;
399#endif /* POWERFAIL_NMI */
401#endif /* NISA > 0 */
400#endif /* DEV_ISA */
402
403 case T_OFLOW: /* integer overflow fault */
404 ucode = FPE_INTOVF;
405 i = SIGFPE;
406 break;
407
408 case T_BOUND: /* bounds check fault */
409 ucode = FPE_FLTSUB;

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613 */
614#ifdef DDB
615 /* XXX Giant */
616 if (kdb_trap (type, 0, &frame))
617 goto out;
618#endif
619 break;
620
401
402 case T_OFLOW: /* integer overflow fault */
403 ucode = FPE_INTOVF;
404 i = SIGFPE;
405 break;
406
407 case T_BOUND: /* bounds check fault */
408 ucode = FPE_FLTSUB;

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612 */
613#ifdef DDB
614 /* XXX Giant */
615 if (kdb_trap (type, 0, &frame))
616 goto out;
617#endif
618 break;
619
621#if NISA > 0
620#ifdef DEV_ISA
622 case T_NMI:
623#ifdef POWERFAIL_NMI
624 mtx_enter(&Giant, MTX_DEF);
625 if (time_second - lastalert > 10) {
626 log(LOG_WARNING, "NMI: power fail\n");
627 sysbeep(TIMER_FREQ/880, hz);
628 lastalert = time_second;
629 }

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643 kdb_trap (type, 0, &frame);
644 }
645#endif /* DDB */
646 goto out;
647 } else if (panic_on_nmi == 0)
648 goto out;
649 /* FALL THROUGH */
650#endif /* POWERFAIL_NMI */
621 case T_NMI:
622#ifdef POWERFAIL_NMI
623 mtx_enter(&Giant, MTX_DEF);
624 if (time_second - lastalert > 10) {
625 log(LOG_WARNING, "NMI: power fail\n");
626 sysbeep(TIMER_FREQ/880, hz);
627 lastalert = time_second;
628 }

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642 kdb_trap (type, 0, &frame);
643 }
644#endif /* DDB */
645 goto out;
646 } else if (panic_on_nmi == 0)
647 goto out;
648 /* FALL THROUGH */
649#endif /* POWERFAIL_NMI */
651#endif /* NISA > 0 */
650#endif /* DEV_ISA */
652 }
653
654 mtx_enter(&Giant, MTX_DEF);
655 trap_fatal(&frame, eva);
656 mtx_exit(&Giant, MTX_DEF);
657 goto out;
658 }
659

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652
653 mtx_enter(&Giant, MTX_DEF);
654 trap_fatal(&frame, eva);
655 mtx_exit(&Giant, MTX_DEF);
656 goto out;
657 }
658

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