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
213 lines
5.8 KiB
C
213 lines
5.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1999 Marcel Moolenaar
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* Copyright (c) 2003 Peter Wemm
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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 without 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_IA32_IA32_SIGNAL_H
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#define _COMPAT_IA32_IA32_SIGNAL_H
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#include <compat/freebsd32/freebsd32_signal.h>
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#define _MC_IA32_HASSEGS 0x1
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#define _MC_IA32_HASBASES 0x2
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#define _MC_IA32_HASFPXSTATE 0x4
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#define _MC_IA32_FLAG_MASK \
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(_MC_IA32_HASSEGS | _MC_IA32_HASBASES | _MC_IA32_HASFPXSTATE)
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struct ia32_mcontext {
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u_int32_t mc_onstack; /* XXX - sigcontext compat. */
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u_int32_t mc_gs; /* machine state (struct trapframe) */
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u_int32_t mc_fs;
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u_int32_t mc_es;
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u_int32_t mc_ds;
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u_int32_t mc_edi;
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u_int32_t mc_esi;
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u_int32_t mc_ebp;
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u_int32_t mc_isp;
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u_int32_t mc_ebx;
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u_int32_t mc_edx;
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u_int32_t mc_ecx;
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u_int32_t mc_eax;
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u_int32_t mc_trapno;
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u_int32_t mc_err;
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u_int32_t mc_eip;
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u_int32_t mc_cs;
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u_int32_t mc_eflags;
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u_int32_t mc_esp;
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u_int32_t mc_ss;
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u_int32_t mc_len; /* sizeof(struct ia32_mcontext) */
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/* We use the same values for fpformat and ownedfp */
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u_int32_t mc_fpformat;
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u_int32_t mc_ownedfp;
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u_int32_t mc_flags;
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/*
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* See <i386/include/npx.h> for the internals of mc_fpstate[].
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*/
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u_int32_t mc_fpstate[128] __aligned(16);
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u_int32_t mc_fsbase;
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u_int32_t mc_gsbase;
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u_int32_t mc_xfpustate;
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u_int32_t mc_xfpustate_len;
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u_int32_t mc_spare2[4];
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};
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struct ia32_ucontext {
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sigset_t uc_sigmask;
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struct ia32_mcontext uc_mcontext;
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u_int32_t uc_link;
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struct sigaltstack32 uc_stack;
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u_int32_t uc_flags;
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u_int32_t __spare__[4];
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};
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#if defined(COMPAT_FREEBSD4)
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struct ia32_mcontext4 {
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u_int32_t mc_onstack; /* XXX - sigcontext compat. */
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u_int32_t mc_gs; /* machine state (struct trapframe) */
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u_int32_t mc_fs;
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u_int32_t mc_es;
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u_int32_t mc_ds;
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u_int32_t mc_edi;
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u_int32_t mc_esi;
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u_int32_t mc_ebp;
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u_int32_t mc_isp;
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u_int32_t mc_ebx;
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u_int32_t mc_edx;
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u_int32_t mc_ecx;
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u_int32_t mc_eax;
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u_int32_t mc_trapno;
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u_int32_t mc_err;
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u_int32_t mc_eip;
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u_int32_t mc_cs;
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u_int32_t mc_eflags;
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u_int32_t mc_esp;
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u_int32_t mc_ss;
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u_int32_t mc_fpregs[28];
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u_int32_t __spare__[17];
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};
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struct ia32_ucontext4 {
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sigset_t uc_sigmask;
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struct ia32_mcontext4 uc_mcontext;
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u_int32_t uc_link;
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struct sigaltstack32 uc_stack;
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u_int32_t __spare__[8];
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};
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#endif
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#ifdef COMPAT_43
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struct ia32_sigcontext3 {
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u_int32_t sc_onstack;
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u_int32_t sc_mask;
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u_int32_t sc_esp;
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u_int32_t sc_ebp;
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u_int32_t sc_isp;
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u_int32_t sc_eip;
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u_int32_t sc_eflags;
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u_int32_t sc_es;
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u_int32_t sc_ds;
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u_int32_t sc_cs;
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u_int32_t sc_ss;
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u_int32_t sc_edi;
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u_int32_t sc_esi;
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u_int32_t sc_ebx;
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u_int32_t sc_edx;
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u_int32_t sc_ecx;
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u_int32_t sc_eax;
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u_int32_t sc_gs;
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u_int32_t sc_fs;
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u_int32_t sc_trapno;
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u_int32_t sc_err;
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};
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#endif
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/*
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* Signal frames, arguments passed to application signal handlers.
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*/
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#ifdef COMPAT_FREEBSD4
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struct ia32_sigframe4 {
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u_int32_t sf_signum;
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u_int32_t sf_siginfo; /* code or pointer to sf_si */
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u_int32_t sf_ucontext; /* points to sf_uc */
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u_int32_t sf_addr; /* undocumented 4th arg */
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u_int32_t sf_ah; /* action/handler pointer */
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struct ia32_ucontext4 sf_uc; /* = *sf_ucontext */
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struct siginfo32 sf_si; /* = *sf_siginfo (SA_SIGINFO case) */
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};
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#endif
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struct ia32_sigframe {
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u_int32_t sf_signum;
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u_int32_t sf_siginfo; /* code or pointer to sf_si */
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u_int32_t sf_ucontext; /* points to sf_uc */
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u_int32_t sf_addr; /* undocumented 4th arg */
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u_int32_t sf_ah; /* action/handler pointer */
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/* Beware, hole due to ucontext being 16 byte aligned! */
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struct ia32_ucontext sf_uc; /* = *sf_ucontext */
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struct siginfo32 sf_si; /* = *sf_siginfo (SA_SIGINFO case) */
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};
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#ifdef COMPAT_43
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struct ia32_siginfo3 {
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struct ia32_sigcontext3 si_sc;
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int si_signo;
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int si_code;
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union sigval32 si_value;
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};
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struct ia32_sigframe3 {
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int sf_signum;
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u_int32_t sf_arg2; /* int or siginfo_t */
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u_int32_t sf_scp;
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u_int32_t sf_addr;
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u_int32_t sf_ah; /* action/handler pointer */
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struct ia32_siginfo3 sf_siginfo;
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};
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#endif
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struct ksiginfo;
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struct image_params;
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extern char ia32_sigcode[];
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extern char freebsd4_ia32_sigcode[];
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extern char ia32_osigcode[];
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extern char lcall_tramp;
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extern int sz_ia32_sigcode;
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extern int sz_freebsd4_ia32_sigcode;
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extern int sz_ia32_osigcode;
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extern int sz_lcall_tramp;
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void ia32_sendsig(sig_t, struct ksiginfo *, sigset_t *);
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void ia32_setregs(struct thread *td, struct image_params *imgp,
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uintptr_t stack);
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int setup_lcall_gate(void);
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#endif
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