diff options
Diffstat (limited to 'sys/compat/vax1k')
| -rw-r--r-- | sys/compat/vax1k/files.vax1k | 8 | ||||
| -rw-r--r-- | sys/compat/vax1k/vax1k_exec.c | 145 | ||||
| -rw-r--r-- | sys/compat/vax1k/vax1k_exec.h | 48 | ||||
| -rw-r--r-- | sys/compat/vax1k/vax1k_subr.c | 96 |
4 files changed, 297 insertions, 0 deletions
diff --git a/sys/compat/vax1k/files.vax1k b/sys/compat/vax1k/files.vax1k new file mode 100644 index 00000000000..359320c60ec --- /dev/null +++ b/sys/compat/vax1k/files.vax1k @@ -0,0 +1,8 @@ +# $OpenBSD: files.vax1k,v 1.1 2001/11/14 14:37:22 hugh Exp $ +# $NetBSD: files.vax1k,v 1.1 1998/08/21 13:25:47 ragge Exp $ +# +# Config file description for vax1k compat code. Included by +# sys/arch/vax/conf/files.vax + +file compat/vax1k/vax1k_exec.c compat_vax1k +file compat/vax1k/vax1k_subr.c compat_vax1k diff --git a/sys/compat/vax1k/vax1k_exec.c b/sys/compat/vax1k/vax1k_exec.c new file mode 100644 index 00000000000..a2e37b3916e --- /dev/null +++ b/sys/compat/vax1k/vax1k_exec.c @@ -0,0 +1,145 @@ +/* $OpenBSD: vax1k_exec.c,v 1.1 2001/11/14 14:37:22 hugh Exp $ */ +/* $NetBSD: vax1k_exec.c,v 1.1 1998/08/21 13:25:47 ragge Exp $ */ + +/* + * Copyright (c) 1993, 1994 Christopher G. Demetriou + * 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 Christopher G. Demetriou. + * 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. + */ + +/* + * Exec glue to provide compatibility with older NetBSD vax1k exectuables. + * + * Because NetBSD/vax now uses 4k page size, older binaries (that started + * on an 1k boundary) cannot be mmap'ed. Therefore they are read in + * (via vn_rdwr) as OMAGIC binaries and executed. This will use a little + * bit more memory, but otherwise won't affect the execution speed. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/proc.h> +#include <sys/malloc.h> +#include <sys/vnode.h> +#include <sys/exec.h> +#include <sys/resourcevar.h> + +#include <compat/vax1k/vax1k_exec.h> + +int exec_vax1k_prep_anymagic + __P((struct proc *, struct exec_package *, int)); + +/* + * exec_vax1k_makecmds(): Check if it's an a.out-format executable + * with an vax1k magic number. + * + * Given a proc pointer and an exec package pointer, see if the referent + * of the epp is in a.out format. Just check 'standard' magic numbers for + * this architecture. + * + * This function, in the former case, or the hook, in the latter, is + * responsible for creating a set of vmcmds which can be used to build + * the process's vm space and inserting them into the exec package. + */ + +int +exec_vax1k_makecmds(p, epp) + struct proc *p; + struct exec_package *epp; +{ + u_long midmag, magic; + u_short mid; + int error; + struct exec *execp = epp->ep_hdr; + + if (epp->ep_hdrvalid < sizeof(struct exec)) + return ENOEXEC; + + midmag = ntohl(execp->a_midmag); + mid = (midmag >> 16) & 0x3ff; + magic = midmag & 0xffff; + + midmag = mid << 16 | magic; + + switch (midmag) { + case (MID_VAX1K << 16) | ZMAGIC: + error = exec_vax1k_prep_anymagic(p, epp, 0); + break; + + case (MID_VAX1K << 16) | NMAGIC: + case (MID_VAX1K << 16) | OMAGIC: + error = exec_vax1k_prep_anymagic(p, epp, sizeof(struct exec)); + break; + + default: + error = ENOEXEC; + } + + if (error) + kill_vmcmds(&epp->ep_vmcmds); + + return error; +} + +/* + * exec_vax1k_prep_anymagic(): Prepare an vax1k ?MAGIC binary's exec package + * + * First, set of the various offsets/lengths in the exec package. + * Note that all code is mapped RW; no protection, but because it is + * only used for compatibility it won't hurt. + * + */ +int +exec_vax1k_prep_anymagic(p, epp, off) + struct proc *p; + struct exec_package *epp; + int off; +{ + long etmp, tmp; + struct exec *execp = epp->ep_hdr; + + epp->ep_taddr = execp->a_entry & ~(VAX1K_USRTEXT - 1); + epp->ep_tsize = execp->a_text + execp->a_data; + epp->ep_daddr = epp->ep_tsize + epp->ep_taddr; + epp->ep_dsize = execp->a_bss; + epp->ep_entry = execp->a_entry; + + /* set up command for text segment */ + NEW_VMCMD(&epp->ep_vmcmds, vax1k_map_readvn, + epp->ep_tsize, epp->ep_taddr, epp->ep_vp, off, + VM_PROT_WRITE|VM_PROT_READ|VM_PROT_EXECUTE); + + tmp = round_page(epp->ep_daddr); + etmp = execp->a_bss - (tmp - epp->ep_daddr); + + /* set up command for bss segment */ + if (etmp > 0) + NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, etmp, tmp, NULLVP, 0, + VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE); + + return exec_setup_stack(p, epp); +} diff --git a/sys/compat/vax1k/vax1k_exec.h b/sys/compat/vax1k/vax1k_exec.h new file mode 100644 index 00000000000..dab327cdf53 --- /dev/null +++ b/sys/compat/vax1k/vax1k_exec.h @@ -0,0 +1,48 @@ +/* $OpenBSD: vax1k_exec.h,v 1.1 2001/11/14 14:37:22 hugh Exp $ */ +/* $NetBSD: vax1k_exec.h,v 1.1 1998/08/21 13:25:47 ragge Exp $ */ + +/*- + * Copyright (c) 1996 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe. + * + * 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 the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``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 FOUNDATION OR CONTRIBUTORS + * 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. + */ + +#ifndef _VAX1K_EXEC_H_ +#define _VAX1K_EXEC_H_ + +#define VAX1K_LDPGSZ 1024 +#define VAX1K_USRTEXT VAX1K_LDPGSZ + +int exec_vax1k_makecmds __P((struct proc *, struct exec_package *)); +int vax1k_map_readvn __P((struct proc *, struct exec_vmcmd *)); +#endif /* _VAX1K_EXEC_H_ */ diff --git a/sys/compat/vax1k/vax1k_subr.c b/sys/compat/vax1k/vax1k_subr.c new file mode 100644 index 00000000000..b272219cf7f --- /dev/null +++ b/sys/compat/vax1k/vax1k_subr.c @@ -0,0 +1,96 @@ +/* $OpenBSD: vax1k_subr.c,v 1.1 2001/11/14 14:37:22 hugh Exp $ */ +/* $NetBSD: vax1k_subr.c,v 1.2 1999/03/24 05:51:20 mrg Exp $ */ + +/* + * Copyright (c) 1993, 1994, 1996 Christopher G. Demetriou + * 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 Christopher G. Demetriou. + * 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/param.h> +#include <sys/systm.h> +#include <sys/proc.h> +#include <sys/malloc.h> +#include <sys/vnode.h> +#include <sys/filedesc.h> +#include <sys/exec.h> +#include <sys/mman.h> + +#include <compat/vax1k/vax1k_exec.h> + +#include <uvm/uvm_extern.h> + +/* + * vax1k_map_readvn(): + * handle vmcmd which specifies that a vnode should be read from. + * This is used to be able to read in and execute vax1k binaries + * even if the page size is bigger. (cannot mmap). + */ +int +vax1k_map_readvn(p, cmd) + struct proc *p; + struct exec_vmcmd *cmd; +{ + vm_offset_t oaddr; + int error; + + if (cmd->ev_len == 0) + return(KERN_SUCCESS); /* XXXCDC: should it happen? */ + + oaddr = cmd->ev_addr; + cmd->ev_addr = trunc_page(cmd->ev_addr); /* required by uvm_map */ + error = uvm_map(&p->p_vmspace->vm_map, &cmd->ev_addr, + round_page(cmd->ev_len + (oaddr - cmd->ev_addr)), + NULL, UVM_UNKNOWN_OFFSET, 0, + UVM_MAPFLAG(UVM_PROT_ALL, UVM_PROT_ALL, UVM_INH_COPY, + UVM_ADV_NORMAL, + UVM_FLAG_FIXED|UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW)); + + if (error) + return error; + + error = vn_rdwr(UIO_READ, cmd->ev_vp, (caddr_t)oaddr, + cmd->ev_len, cmd->ev_offset, UIO_USERSPACE, IO_UNIT, + p->p_ucred, NULL, p); + if (error) + return error; + + if (cmd->ev_prot != (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)) { + /* + * we had to map in the area at PROT_ALL so that vn_rdwr() + * could write to it. however, the caller seems to want + * it mapped read-only, so now we are going to have to call + * uvm_map_protect() to fix up the protection. ICK. + */ + return(uvm_map_protect(&p->p_vmspace->vm_map, + trunc_page(cmd->ev_addr), + round_page(cmd->ev_addr + cmd->ev_len), + cmd->ev_prot, FALSE)); + } else { + return(KERN_SUCCESS); + } +} |