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/*-
* Copyright (c) 1995 Steven Wallace
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Steven Wallace.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/i386/ibcs2/ibcs2_sysvec.c 219405 2011-03-08 19:01:45Z dchagin $");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/exec.h>
#include <sys/imgact.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/sysent.h>
#include <sys/signalvar.h>
#include <sys/proc.h>
#include <sys/sx.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <i386/ibcs2/ibcs2_syscall.h>
#include <i386/ibcs2/ibcs2_signal.h>
MODULE_VERSION(ibcs2, 1);
extern int bsd_to_ibcs2_errno[];
extern struct sysent ibcs2_sysent[IBCS2_SYS_MAXSYSCALL];
extern int szsigcode;
extern char sigcode[];
static int ibcs2_fixup(register_t **, struct image_params *);
struct sysentvec ibcs2_svr3_sysvec = {
.sv_size = sizeof (ibcs2_sysent) / sizeof (ibcs2_sysent[0]),
.sv_table = ibcs2_sysent,
.sv_mask = 0xff,
.sv_sigsize = IBCS2_SIGTBLSZ,
.sv_sigtbl = bsd_to_ibcs2_sig,
.sv_errsize = ELAST + 1,
.sv_errtbl = bsd_to_ibcs2_errno,
.sv_transtrap = NULL,
.sv_fixup = ibcs2_fixup,
.sv_sendsig = sendsig,
.sv_sigcode = sigcode, /* use generic trampoline */
.sv_szsigcode = &szsigcode,
.sv_prepsyscall = NULL,
.sv_name = "IBCS2 COFF",
.sv_coredump = NULL, /* we don't have a COFF coredump function */
.sv_imgact_try = NULL,
.sv_minsigstksz = IBCS2_MINSIGSTKSZ,
.sv_pagesize = PAGE_SIZE,
.sv_minuser = VM_MIN_ADDRESS,
.sv_maxuser = VM_MAXUSER_ADDRESS,
.sv_usrstack = USRSTACK,
.sv_psstrings = PS_STRINGS,
.sv_stackprot = VM_PROT_ALL,
.sv_copyout_strings = exec_copyout_strings,
.sv_setregs = exec_setregs,
.sv_fixlimit = NULL,
.sv_maxssiz = NULL,
.sv_flags = SV_ABI_UNDEF | SV_IA32 | SV_ILP32,
.sv_set_syscall_retval = cpu_set_syscall_retval,
.sv_fetch_syscall_args = cpu_fetch_syscall_args,
.sv_syscallnames = NULL,
.sv_schedtail = NULL,
};
static int
ibcs2_fixup(register_t **stack_base, struct image_params *imgp)
{
return (suword(--(*stack_base), imgp->args->argc));
}
/*
* Create an "ibcs2" module that does nothing but allow checking for
* the presence of the subsystem.
*/
static int
ibcs2_modevent(module_t mod, int type, void *unused)
{
struct proc *p = NULL;
int rval = 0;
switch(type) {
case MOD_LOAD:
break;
case MOD_UNLOAD:
/* if this was an ELF module we'd use elf_brand_inuse()... */
sx_slock(&allproc_lock);
FOREACH_PROC_IN_SYSTEM(p) {
if (p->p_sysent == &ibcs2_svr3_sysvec) {
rval = EBUSY;
break;
}
}
sx_sunlock(&allproc_lock);
break;
default:
rval = EOPNOTSUPP;
break;
}
return (rval);
}
static moduledata_t ibcs2_mod = {
"ibcs2",
ibcs2_modevent,
0
};
DECLARE_MODULE_TIED(ibcs2, ibcs2_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);