1 /* $NetBSD: linux_exec.h,v 1.6 2002/01/17 17:19:03 bjh21 Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Emmanuel Dreyfus. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _POWERPC_LINUX_EXEC_H 40 #define _POWERPC_LINUX_EXEC_H 41 42 #include <sys/exec_aout.h> 43 #include <sys/exec_elf.h> 44 #include <sys/types.h> 45 #include <sys/systm.h> 46 47 /* 48 * From Linux's include/asm-ppc/elf.h 49 */ 50 #define LINUX_ELF_HWCAP (0) 51 52 /* 53 * From Linux's include/asm-ppc/param.h 54 */ 55 # define LINUX_CLOCKS_PER_SEC 100 /* frequency at which times() counts */ 56 57 /* 58 * Linux a.out format parameters 59 */ 60 #define LINUX_M_POWERPC MID_POWERPC 61 #define LINUX_MID_MACHINE LINUX_M_POWERPC 62 63 /* 64 * Linux Elf32 format parameters 65 */ 66 67 #define LINUX_GCC_SIGNATURE 1 68 /* 69 * LINUX_ATEXIT_SIGNATURE enable the atexit_signature test. See 70 * sys/compat/linux/common/linux_exec_elf32.c:linux_atexit_signature() 71 */ 72 #define LINUX_ATEXIT_SIGNATURE 1 73 74 /* 75 * LINUX_SHIFT enable the 16 bytes shift for arguments and ELF auxiliary 76 * table. This is needed on the PowerPC 77 */ 78 #define LINUX_SHIFT 0x0000000FUL 79 80 /* 81 * LINUX_SP_WRAP enable the stack pointer wrap before Linux's ld.so 82 * transfers control to the Linux executable. It is set to the size 83 * of the stack pointer wrap code, which is defined in 84 * sys/compat/linux/arch/powerpc/linux_sp_wrap.S 85 */ 86 #define LINUX_SP_WRAP 0x30 /* Size of the stack pointer wrap code */ 87 88 /* 89 * Entries in the ELF auxiliary table. This is counted from 90 * sys/compat/linux/arc/powerpc/linux_exec_powerpc.c 91 */ 92 #define LINUX_ELF_AUX_ENTRIES 14 93 94 /* 95 * Size of the auxiliary ELF table. On the PowerPC we need 16 extra bytes 96 * in order to force an alignement on a 16 bytes boundary (this is expected 97 * by PowerPC GNU ld.so). If we use LINUX_SP_WRAP, we also need some extra 98 * room for the sp_wrap_code. 99 */ 100 #ifdef LINUX_SP_WRAP 101 #define LINUX_ELF_AUX_ARGSIZ \ 102 ((howmany(ELF_AUX_ENTRIES * sizeof(LinuxAuxInfo), sizeof(Elf32_Addr))) \ 103 + 16 + LINUX_SP_WRAP) 104 #else 105 #define LINUX_ELF_AUX_ARGSIZ \ 106 ((howmany(ELF_AUX_ENTRIES * sizeof(LinuxAuxInfo), sizeof(Elf32_Addr))) + 16) 107 #endif 108 109 /* XXX should use ELFNAME2 */ 110 #define LINUX_COPYARGS_FUNCTION linux_elf32_copyargs 111 112 typedef struct { 113 Elf32_Sword a_type; 114 Elf32_Word a_v; 115 } LinuxAux32Info; 116 #define LinuxAuxInfo LinuxAux32Info 117 118 /* NetBSD/powerpc doesn't use e_syscall, so use the default. */ 119 #define LINUX_SYSCALL_FUNCTION syscall 120 121 #ifdef _KERNEL 122 __BEGIN_DECLS 123 int linux_elf32_copyargs __P((struct exec_package *, 124 struct ps_strings *, char **, void *)); 125 __END_DECLS 126 #endif /* _KERNEL */ 127 #endif /* !_POWERPC_LINUX_EXEC_H */ 128