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NetBSD/sys/compat/aoutm68k/aoutm68k_exec.c

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merge ktrace-lwp.
2005-12-11 15:16:03 +03:00
/* $NetBSD: aoutm68k_exec.c,v 1.20 2005/12/11 12:19:56 christos Exp $ */
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Steve C. Woodford.
*
* 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: aoutm68k_exec.c,v 1.20 2005/12/11 12:19:56 christos Exp $");
add RCSIDs (including regeneration of files as appropriate)
2001-11-13 05:07:52 +03:00
use _KERNEL_OPT.
2001-05-30 15:37:21 +04:00
#if defined(_KERNEL_OPT)
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
#include "opt_syscall_debug.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/exec.h>
#include <sys/signalvar.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>
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
#include <compat/aoutm68k/aoutm68k_syscall.h>
- 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
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
extern struct sysent aoutm68k_sysent[];
#ifdef SYSCALL_DEBUG
use native syscallnames[] for SYSCALL_DEBUG
2004-09-12 15:09:32 +04:00
extern const char * const syscallnames[];
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
#endif
extern char sigcode[], esigcode[];
m68k syscall rototill: - Switch all m68k-based ports over to __HAVE_SYSCALL_INTERN. - Add systrace glue. - Define struct mdproc in <m68k/proc.h> instead of <machine/proc.h>. (They were all defined exactly the same anyway, other than a couple of the MDP_* flags.)
2002-07-13 12:28:40 +04:00
void aoutm68k_syscall_intern __P((struct proc *));
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
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_netbsd_aoutm68k_object;
const struct emul emul_netbsd_aoutm68k = {
change emulation name from 'netbsd' to 'aoutm68k'
2000-12-08 23:07:43 +03:00
"aoutm68k",
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
"/emul/aout",
handle __HAVE_MINIMAL_EMUL
2002-11-10 23:59:03 +03:00
#ifndef __HAVE_MINIMAL_EMUL
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
EMUL_HAS_SYS___syscall,
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
NULL,
AOUTM68K_SYS_syscall,
set struct emul's nsysent to compat SYS_NSYSENT, not SYS_MAXSYSCALL
2002-11-01 22:26:21 +03:00
AOUTM68K_SYS_NSYSENT,
handle __HAVE_MINIMAL_EMUL
2002-11-10 23:59:03 +03:00
#endif
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
aoutm68k_sysent,
#ifdef SYSCALL_DEBUG
use native syscallnames[] for SYSCALL_DEBUG
2004-09-12 15:09:32 +04:00
syscallnames,
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
#else
NULL,
#endif
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
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,
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
sigcode,
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_netbsd_aoutm68k_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
setregs,
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +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,
- 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
aoutm68k_syscall_intern,
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
uvm_default_mapaddr,
Initial cut of COMPAT_AOUT_M68K. This gets most existing m68k a.out binaries working with m68k ELF kernels. There are still some remaining ABI issues to track down; most notably, some ioctl(2) calls are affected by the change.
2000-12-02 23:40:03 +03:00
};