1 /* $NetBSD: linux32_exec.h,v 1.2 2006/08/07 14:19:57 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 */ 78