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Improve on fault signal translation. Inspired largely by Robert V. Baron's

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wabi patch.
This commit is contained in:
christos 2002-02-16 05:19:26 +00:00
parent 8bb2be2987
commit a7986989e7
1 changed files with 82 additions and 8 deletions
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90
sys/arch/i386/i386/linux_trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: linux_trap.c,v 1.2 2001/11/15 07:03:30 lukem Exp $ */
/* $NetBSD: linux_trap.c,v 1.3 2002/02/16 05:19:26 christos Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -41,7 +41,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_trap.c,v 1.2 2001/11/15 07:03:30 lukem Exp $");
__KERNEL_RCSID(0, "$NetBSD: linux_trap.c,v 1.3 2002/02/16 05:19:26 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -63,14 +63,88 @@ __KERNEL_RCSID(0, "$NetBSD: linux_trap.c,v 1.2 2001/11/15 07:03:30 lukem Exp $")
#include <compat/linux/common/linux_exec.h>
#define LINUX_T_DIVIDE 0
#define LINUX_T_DEBUG 1
#define LINUX_T_NMI 2
#define LINUX_T_INT3 3
#define LINUX_T_OVERFLOW 4
#define LINUX_T_BOUNDS 5
#define LINUX_T_INVALID_OP 6
#define LINUX_T_DEVICE_NOT_AVAIL 7
#define LINUX_T_DOUBLE_FAULT 8
#define LINUX_T_COPROC_SEG_OVERRUN 9
#define LINUX_T_INVALID_TSS 10
#define LINUX_T_SEG_NOT_PRESENT 11
#define LINUX_T_STACK_SEG_FAULT 12
#define LINUX_T_GENERAL_PROT_FAULT 13
#define LINUX_T_PAGE_FAULT 14
#define LINUX_T_SPURIOUS_INTERRUPT 15
#define LINUX_T_COPROC_ERROR 16
#define LINUX_T_ALIGN_CHECK 17
#define LINUX_T_MACHINE_CHECK 18 /* XXX */
#define LINUX_T_SIMD_COPROC_ERROR 19 /* XXX */
/* Note 255 is bogus */
static int trapno_to_x86_vec[] = {
LINUX_T_INVALID_OP, /* 0 T_PRIVINFLT */
LINUX_T_INT3, /* 1 T_BPTFLT */
LINUX_T_COPROC_ERROR, /* 2 T_ARITHTRAP */
LINUX_T_SPURIOUS_INTERRUPT, /* 3 T_ASTFLT XXX: ??? */
LINUX_T_GENERAL_PROT_FAULT, /* 4 T_PROTFLT */
LINUX_T_DEBUG, /* 5 T_TRCTRAP */
LINUX_T_PAGE_FAULT, /* 6 T_PAGEFLT */
LINUX_T_ALIGN_CHECK, /* 7 T_ALIGNFLT */
LINUX_T_DIVIDE, /* 8 T_DIVIDE */
LINUX_T_NMI, /* 9 T_NMI */
LINUX_T_OVERFLOW, /* 10 T_OFLOW */
LINUX_T_BOUNDS, /* 11 T_BOUND */
LINUX_T_DEVICE_NOT_AVAIL, /* 12 T_DNA */
LINUX_T_DOUBLE_FAULT, /* 13 T_DOUBLEFLT */
LINUX_T_COPROC_SEG_OVERRUN, /* 14 T_FPOPFLT */
LINUX_T_INVALID_TSS, /* 15 T_TSSFLT */
LINUX_T_SEG_NOT_PRESENT, /* 16 T_SEGNPFLT */
LINUX_T_STACK_SEG_FAULT, /* 17 T_STKFLT */
LINUX_T_MACHINE_CHECK /* 18 T_RESERVED XXX: ??? */
};
/* For the nmi and reserved below linux does not post a signal. */
static int linux_x86_vec_to_sig[] = {
SIGFPE, /* 0 LINUX_T_DIVIDE */
SIGTRAP, /* 1 LINUX_T_DEBUG */
/*nmi*/ SIGSEGV, /* 2 LINUX_T_NMI */
SIGTRAP, /* 3 LINUX_T_INT3 */
SIGSEGV, /* 4 LINUX_T_OVERFLOW */
SIGSEGV, /* 5 LINUX_T_BOUNDS */
SIGILL, /* 6 LINUX_T_INVALIDOP */
SIGSEGV, /* 7 LINUX_T_DEVICE_NOT_AVAIL */
SIGSEGV, /* 8 LINUX_T_DOUBLE_FAULT */
SIGFPE, /* 9 LINUX_T_COPROC_SEG_OVERRUN */
SIGSEGV, /* 10 LINUX_T_INVALID_TSS */
SIGBUS, /* 11 LINUX_T_SEG_NOT_PRESENT */
SIGBUS, /* 12 LINUX_T_STACK_SEG_FAULT */
SIGSEGV, /* 13 LINUX_T_GENERAL_PROT_FAULT */
SIGSEGV, /* 14 LINUX_T_PAGE_FAULT */
/*resv*/SIGSEGV, /* 15 LINUX_T_SPURIOUS_INTERRUPT */
SIGFPE, /* 16 LINUX_T_COPROC_ERROR */
SIGSEGV, /* 17 LINUX_T_ALIGN_CHECK */
SIGSEGV /* 18 LINUX_T_MACHINE_CHECK */
};
void
linux_trapsignal(struct proc *p, int signo, u_long type) {
switch (type) {
case T_PROTFLT:
trapsignal(p, SIGSEGV, type);
return;
linux_trapsignal(struct proc *p, int signo, u_long type)
{
switch (signo) {
case SIGILL:
case SIGTRAP:
case SIGIOT:
case SIGBUS:
case SIGFPE:
case SIGSEGV:
type = trapno_to_x86_vec[type];
signo = linux_x86_vec_to_sig[type];
/*FALLTHROUGH*/
default:
trapsignal(p, signo, type);
return;
break;
}
}