1 /*- 2 * Copyright (c) 1995-1996 Søren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 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. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _SYS_IMGACT_ELF_H_ 32 #define _SYS_IMGACT_ELF_H_ 33 34 #include <machine/elf.h> 35 36 #ifdef _KERNEL 37 38 #define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);} 39 40 struct image_params; 41 struct thread; 42 struct vnode; 43 44 /* 45 * Structure used to pass information from the loader to the 46 * stack fixup routine. 47 */ 48 typedef struct { 49 Elf_Ssize execfd; 50 Elf_Size phdr; 51 Elf_Size phent; 52 Elf_Size phnum; 53 Elf_Size pagesz; 54 Elf_Size base; 55 Elf_Size flags; 56 Elf_Size entry; 57 Elf_Word hdr_eflags; /* e_flags field from ehdr */ 58 } __ElfN(Auxargs); 59 60 typedef struct { 61 Elf_Note hdr; 62 const char * vendor; 63 int flags; 64 bool (*trans_osrel)(const Elf_Note *, int32_t *); 65 #define BN_CAN_FETCH_OSREL 0x0001 /* Deprecated. */ 66 #define BN_TRANSLATE_OSREL 0x0002 /* Use trans_osrel to fetch osrel */ 67 /* after checking the image ABI specification, if needed. */ 68 } Elf_Brandnote; 69 70 typedef struct { 71 int brand; 72 int machine; 73 const char *compat_3_brand; /* pre Binutils 2.10 method (FBSD 3) */ 74 const char *emul_path; 75 const char *interp_path; 76 struct sysentvec *sysvec; 77 const char *interp_newpath; 78 int flags; 79 Elf_Brandnote *brand_note; 80 boolean_t (*header_supported)(struct image_params *); 81 #define BI_CAN_EXEC_DYN 0x0001 82 #define BI_BRAND_NOTE 0x0002 /* May have note.ABI-tag section. */ 83 #define BI_BRAND_NOTE_MANDATORY 0x0004 /* Must have note.ABI-tag section. */ 84 #define BI_BRAND_ONLY_STATIC 0x0008 /* Match only interp-less binaries. */ 85 } __ElfN(Brandinfo); 86 87 __ElfType(Auxargs); 88 __ElfType(Brandinfo); 89 90 #define MAX_BRANDS 8 91 92 int __elfN(brand_inuse)(Elf_Brandinfo *entry); 93 int __elfN(insert_brand_entry)(Elf_Brandinfo *entry); 94 int __elfN(remove_brand_entry)(Elf_Brandinfo *entry); 95 int __elfN(freebsd_fixup)(register_t **, struct image_params *); 96 int __elfN(coredump)(struct thread *, struct vnode *, off_t, int); 97 size_t __elfN(populate_note)(int, void *, void *, size_t, void **); 98 99 /* Machine specific function to dump per-thread information. */ 100 void __elfN(dump_thread)(struct thread *, void *, size_t *); 101 102 extern int __elfN(fallback_brand); 103 extern Elf_Brandnote __elfN(freebsd_brandnote); 104 extern Elf_Brandnote __elfN(kfreebsd_brandnote); 105 #endif /* _KERNEL */ 106 107 #endif /* !_SYS_IMGACT_ELF_H_ */ 108