sys/compat/linux32/arch/amd64/linux32_exec.h

   1 /*      $NetBSD: linux32_exec.h,v 1.1 2006/02/09 19:18:57 manu Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Emmanuel Dreyfus
  17  * 4. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior written
  19  *    permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 #ifndef _AMD64_LINUX32_EXEC_H
  34 #define _AMD64_LINUX32_EXEC_H
  35
  36 #include <sys/exec_elf.h>
  37
  38 #define LINUX32_M_I386          100
  39 #define LINUX32_MID_MACHINE     LINUX_M_I386
  40 #define LINUX32_USRSTACK        0xC0000000
  41
  42 #define LINUX32_DEBUGLINK_SIGNATURE     1
  43
  44 #define LINUX32_ELF_AUX_ENTRIES 18
  45
  46 /* Hardware platform identifier string */
  47 #define LINUX32_PLATFORM "i686"
  48
  49 #define LINUX32_CPUCAP (curcpu()->ci_feature_flags)
  50
  51 /* vsyscall assembly */
  52 static char linux32_kernel_vsyscall[] = {
  53         0x55,                           /* push   %ebp */               \
  54         0x89, 0xcd,                     /* mov    %ecx,%ebp */          \
  55         0x0f, 0x05,                     /* syscall */                   \
  56         0xb9, 0x2b, 0x00, 0x00, 0x00,   /* mov    $0x2b,%ecx */         \
  57         0x8e, 0xd1,                     /* movl   %ecx,%ss */           \
  58         0x89, 0xe9,                     /* mov    %ebp,%ecx */          \
  59         0x5d,                           /* pop    %ebp */               \
  60         0xc3,                           /* ret */                       \
  61 };
  62
  63 /* The extra data (ELF auxiliary table and platform name) on stack */
  64 struct linux32_extra_stack_data {
  65         Aux32Info ai[LINUX32_ELF_AUX_ENTRIES];
  66         char hw_platform[sizeof(LINUX32_PLATFORM)];
  67         int pad;
  68         Elf32_Ehdr elfhdr;
  69         char kernel_vsyscall[sizeof(linux32_kernel_vsyscall)];
  70 };
  71 #define LINUX32_ELF_AUX_ARGSIZ sizeof(struct linux32_extra_stack_data)
  72
  73 #ifdef _KERNEL
  74 int linux32_exec_setup_stack(struct lwp *, struct exec_package *);
  75 #endif
  76
  77 #endif /* !_AMD64_LINUX32_EXEC_H */