31174518d2
- Use ustringp for the location of the argv and environment strings and allow destp to travel further down the stack for the stackgap and auxv regions. - Update the Linux copyout_strings variants to move destp down the stack as was done for the native ABIs in r263349. - Stop allocating a space for a stack gap in the Linux ABIs. This used to hold translated system call arguments, but hasn't been used since r159992. Reviewed by: kib Tested on: md64 (amd64, i386, linux64), i386 (i386, linux) Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D22501
126 lines
5.0 KiB
C
126 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1998-1999 Andrew Gallatin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _COMPAT_FREEBSD32_FREEBSD32_UTIL_H_
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#define _COMPAT_FREEBSD32_FREEBSD32_UTIL_H_
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#include <sys/cdefs.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/uio.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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struct freebsd32_ps_strings {
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u_int32_t ps_argvstr; /* first of 0 or more argument strings */
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int ps_nargvstr; /* the number of argument strings */
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u_int32_t ps_envstr; /* first of 0 or more environment strings */
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int ps_nenvstr; /* the number of environment strings */
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};
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#if defined(__amd64__)
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#include <compat/ia32/ia32_util.h>
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#endif
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#define FREEBSD32_PS_STRINGS \
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(FREEBSD32_USRSTACK - sizeof(struct freebsd32_ps_strings))
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extern struct sysent freebsd32_sysent[];
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#define SYSCALL32_MODULE(name, offset, new_sysent, evh, arg) \
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static struct syscall_module_data name##_syscall32_mod = { \
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evh, arg, offset, new_sysent, { 0, NULL } \
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}; \
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\
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static moduledata_t name##32_mod = { \
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"sys32/" #name, \
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syscall32_module_handler, \
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&name##_syscall32_mod \
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}; \
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DECLARE_MODULE(name##32, name##32_mod, SI_SUB_SYSCALLS, SI_ORDER_MIDDLE)
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#define SYSCALL32_MODULE_HELPER(syscallname) \
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static int syscallname##_syscall32 = FREEBSD32_SYS_##syscallname; \
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static struct sysent syscallname##_sysent32 = { \
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(sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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(sy_call_t *)& syscallname \
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}; \
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SYSCALL32_MODULE(syscallname, \
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& syscallname##_syscall32, & syscallname##_sysent32,\
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NULL, NULL);
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#define SYSCALL32_INIT_HELPER_F(syscallname, flags) { \
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.new_sysent = { \
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.sy_narg = (sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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.sy_call = (sy_call_t *)& syscallname, \
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.sy_flags = (flags) \
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}, \
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.syscall_no = FREEBSD32_SYS_##syscallname \
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}
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#define SYSCALL32_INIT_HELPER_COMPAT_F(syscallname, flags) { \
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.new_sysent = { \
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.sy_narg = (sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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.sy_call = (sy_call_t *)& sys_ ## syscallname, \
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.sy_flags = (flags) \
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}, \
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.syscall_no = FREEBSD32_SYS_##syscallname \
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}
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#define SYSCALL32_INIT_HELPER(syscallname) \
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SYSCALL32_INIT_HELPER_F(syscallname, 0)
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#define SYSCALL32_INIT_HELPER_COMPAT(syscallname) \
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SYSCALL32_INIT_HELPER_COMPAT_F(syscallname, 0)
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int syscall32_module_handler(struct module *mod, int what, void *arg);
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int syscall32_helper_register(struct syscall_helper_data *sd, int flags);
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int syscall32_helper_unregister(struct syscall_helper_data *sd);
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struct iovec32;
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struct rusage32;
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int freebsd32_copyout_strings(struct image_params *imgp,
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uintptr_t *stack_base);
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int freebsd32_copyiniov(struct iovec32 *iovp, u_int iovcnt,
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struct iovec **iov, int error);
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void freebsd32_rusage_out(const struct rusage *s, struct rusage32 *s32);
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struct image_args;
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int freebsd32_exec_copyin_args(struct image_args *args, const char *fname,
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enum uio_seg segflg, u_int32_t *argv, u_int32_t *envv);
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#endif /* !_COMPAT_FREEBSD32_FREEBSD32_UTIL_H_ */
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