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NetBSD/sys/compat/svr4_32/svr4_32_exec.c

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merge ktrace-lwp.
2005-12-11 15:16:03 +03:00
/* $NetBSD: svr4_32_exec.c,v 1.18 2005/12/11 12:20:26 christos Exp $ */
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
/*-
* Copyright (c) 1994, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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.
*/
add RCSIDs (including regeneration of files as appropriate)
2001-11-13 05:07:52 +03:00
#include <sys/cdefs.h>
merge ktrace-lwp.
2005-12-11 15:16:03 +03:00
__KERNEL_RCSID(0, "$NetBSD: svr4_32_exec.c,v 1.18 2005/12/11 12:20:26 christos Exp $");
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#if defined(_KERNEL_OPT)
#include "opt_syscall_debug.h"
#endif
add RCSIDs (including regeneration of files as appropriate)
2001-11-13 05:07:52 +03:00
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
#define ELFSIZE 32 /* XXX should die */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses. * For sparc64 and amd64, define *SIZ32 VM constants. * Add a new function pointer to struct emul, pointing at a function that will return the default VM map address. The default function is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS macro. This gives emulations control over the default map address, and allows things to be mapped at the right address (in 32bit range) for COMPAT_NETBSD32. * Add code to adjust the data and stack limits when a COMPAT_NETBSD32 or COMPAT_SVR4_32 binary is executed. * Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr instead (emulations might have set it differently) * Since this changes struct emul, bump kernel version to 3.99.2 Tested on amd64, compile-tested on sparc64.
2005-03-26 08:12:34 +03:00
#include <uvm/uvm_extern.h>
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
#include <machine/svr4_machdep.h>
include the _32 flavor of the machdep file too.
2005-07-10 04:56:19 +04:00
#include <machine/svr4_32_machdep.h>
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
#include <compat/svr4_32/svr4_32_types.h>
#include <compat/svr4_32/svr4_32_syscall.h>
#include <compat/svr4/svr4_errno.h>
#include <compat/svr4_32/svr4_32_signal.h>
Make this compile again.
2001-09-21 00:28:41 +04:00
#include <compat/svr4_32/svr4_32_exec.h>
Add 32-bit svr4 emulation (for 64-bit machines).
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extern char svr4_32_sigcode[], svr4_32_esigcode[];
extern struct sysent svr4_32_sysent[];
extern const char * const svr4_32_syscallnames[];
#ifndef __HAVE_SYSCALL_INTERN
void syscall __P((void));
#endif
add support for non-executable mappings (where the hardware allows this) and make the stack and heap non-executable by default. the changes fall into two basic catagories: - pmap and trap-handler changes. these are all MD: = alpha: we already track per-page execute permission with the (software) PG_EXEC bit, so just have the trap handler pay attention to it. = i386: use a new GDT segment for %cs for processes that have no executable mappings above a certain threshold (currently the bottom of the stack). track per-page execute permission with the last unused PTE bit. = powerpc/ibm4xx: just use the hardware exec bit. = powerpc/oea: we already track per-page exec bits, but the hardware only implements non-exec mappings at the segment level. so track the number of executable mappings in each segment and turn on the no-exec segment bit iff the count is 0. adjust the trap handler to deal. = sparc (sun4m): fix our use of the hardware protection bits. fix the trap handler to recognize text faults. = sparc64: split the existing unified TSB into data and instruction TSBs, and only load TTEs into the appropriate TSB(s) for the permissions. fix the trap handler to check for execute permission. = not yet implemented: amd64, hppa, sh5 - changes in all the emulations that put a signal trampoline on the stack. instead, we now put the trampoline into a uvm_aobj and map that into the process separately. originally from openbsd, adapted for netbsd by me.
2003-08-24 21:52:28 +04:00
struct uvm_object *emul_svr4_32_object;
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
const struct emul emul_svr4_32 = {
"svr4_32",
"/emul/svr4_32",
#ifndef __HAVE_MINIMAL_EMUL
Removed obsoletes EMUL_NO_BSD_ASYNCIO_PIPE and EMUL_NO_SIGIO_ON_READ flags. Async I/O OS specifities should now handled in OS specific code. Linux has been done, but other emulation should be handled. See case LINUX_F_SETFL in sys/compat/linux/common/linux_file.c:linux_sys_fcntl() for more details. The data that has been collected yet: Net Free Open Linux SunOS AIX OSF1 Darwin send SIGIO to write end of pipe Y N N N N N Y Y send SIGIO to read end of pipe Y Y N N N ? Y ? send SIGIO to write end of socket Y Y Y N N Y Y Y send SIGIO to read end of socket Y Y Y Y Y ? Y ?
2001-06-17 01:44:27 +04:00
0,
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
native_to_svr4_errno,
SVR4_32_SYS_syscall,
set struct emul's nsysent to compat SYS_NSYSENT, not SYS_MAXSYSCALL
2002-11-01 22:26:21 +03:00
SVR4_32_SYS_NSYSENT,
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
#endif
svr4_32_sysent,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#ifdef SYSCALL_DEBUG
Add 32-bit svr4 emulation (for 64-bit machines).
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svr4_32_syscallnames,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#else
NULL,
#endif
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
svr4_32_sendsig,
Add an e_trapsignal member to struct emul, so that emulated processes can send the appropriate signal depending on the trap type.
2001-06-18 06:00:48 +04:00
trapsignal,
Put back Emmanuel's sigfilter hooks, as decided by Core.
2003-12-20 22:01:29 +03:00
NULL,
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
svr4_32_sigcode,
svr4_32_esigcode,
add support for non-executable mappings (where the hardware allows this) and make the stack and heap non-executable by default. the changes fall into two basic catagories: - pmap and trap-handler changes. these are all MD: = alpha: we already track per-page execute permission with the (software) PG_EXEC bit, so just have the trap handler pay attention to it. = i386: use a new GDT segment for %cs for processes that have no executable mappings above a certain threshold (currently the bottom of the stack). track per-page execute permission with the last unused PTE bit. = powerpc/ibm4xx: just use the hardware exec bit. = powerpc/oea: we already track per-page exec bits, but the hardware only implements non-exec mappings at the segment level. so track the number of executable mappings in each segment and turn on the no-exec segment bit iff the count is 0. adjust the trap handler to deal. = sparc (sun4m): fix our use of the hardware protection bits. fix the trap handler to recognize text faults. = sparc64: split the existing unified TSB into data and instruction TSBs, and only load TTEs into the appropriate TSB(s) for the permissions. fix the trap handler to check for execute permission. = not yet implemented: amd64, hppa, sh5 - changes in all the emulations that put a signal trampoline on the stack. instead, we now put the trampoline into a uvm_aobj and map that into the process separately. originally from openbsd, adapted for netbsd by me.
2003-08-24 21:52:28 +04:00
&emul_svr4_32_object,
Make the setregs hook emulation-specific, rather than executable format specific. Struct emul has a e_setregs hook back, which points to emulation-specific setregs function. es_setregs of struct execsw now only points to optional executable-specific setup function (this is only used for ECOFF).
2001-09-18 23:36:32 +04:00
svr4_32_setregs,
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
NULL,
NULL,
NULL,
Introduce lwp_emuldata and the associated hooks. No hook is provided for the exec case, as the emulation already has the ability to intercept that with the e_proc_exec hook. It is the responsability of the emulation to take appropriaye action about lwp_emuldata in e_proc_exec. Patch reviewed by Christos.
2003-12-20 21:22:16 +03:00
NULL,
NULL,
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
#ifdef __HAVE_SYSCALL_INTERN
svr4_32_syscall_intern,
#else
syscall,
#endif
- Introduce a e_fault field in struct proc to provide emulation specific memory fault handler. IRIX uses irix_vm_fault, and all other emulation use NULL, which means to use uvm_fault. - While we are there, explicitely set to NULL the uninitialized fields in struct emul: e_fault and e_sysctl on most ports - e_fault is used by the trap handler, for now only on mips. In order to avoid intrusive modifications in UVM, the function pointed by e_fault does not has exactly the same protoype as uvm_fault: int uvm_fault __P((struct vm_map *, vaddr_t, vm_fault_t, vm_prot_t)); int e_fault __P((struct proc *, vaddr_t, vm_fault_t, vm_prot_t)); - In IRIX share groups, all the VM space is shared, except one page. This bounds us to have different VM spaces and synchronize modifications to the VM space accross share group members. We need an IRIX specific hook to the page fault handler in order to propagate VM space modifications caused by page faults.
2002-09-22 01:14:54 +04:00
NULL,
NULL,
Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses. * For sparc64 and amd64, define *SIZ32 VM constants. * Add a new function pointer to struct emul, pointing at a function that will return the default VM map address. The default function is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS macro. This gives emulations control over the default map address, and allows things to be mapped at the right address (in 32bit range) for COMPAT_NETBSD32. * Add code to adjust the data and stack limits when a COMPAT_NETBSD32 or COMPAT_SVR4_32 binary is executed. * Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr instead (emulations might have set it differently) * Since this changes struct emul, bump kernel version to 3.99.2 Tested on amd64, compile-tested on sparc64.
2005-03-26 08:12:34 +03:00
svr4_32_vm_default_addr,
Add 32-bit svr4 emulation (for 64-bit machines).
2001-02-06 19:37:56 +03:00
};