/* elf-fdpic.h: FDPIC ELF load map * * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_ELF_FDPIC_H #define _LINUX_ELF_FDPIC_H #include <linux/elf.h> #define PT_GNU_STACK (PT_LOOS + 0x474e551) /* segment mappings for ELF FDPIC libraries/executables/interpreters */ struct elf32_fdpic_loadseg { Elf32_Addr addr; /* core address to which mapped */ Elf32_Addr p_vaddr; /* VMA recorded in file */ Elf32_Word p_memsz; /* allocation size recorded in file */ }; struct elf32_fdpic_loadmap { Elf32_Half version; /* version of these structures, just in case... */ Elf32_Half nsegs; /* number of segments */ struct elf32_fdpic_loadseg segs[]; }; #define ELF32_FDPIC_LOADMAP_VERSION 0x0000 /* * binfmt binary parameters structure */ struct elf_fdpic_params { struct elfhdr hdr; /* ref copy of ELF header */ struct elf_phdr *phdrs; /* ref copy of PT_PHDR table */ struct elf32_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ unsigned long elfhdr_addr; /* mapped ELF header user address */ unsigned long ph_addr; /* mapped PT_PHDR user address */ unsigned long map_addr; /* mapped loadmap user address */ unsigned long entry_addr; /* mapped entry user address */ unsigned long stack_size; /* stack size requested (PT_GNU_STACK) */ unsigned long dynamic_addr; /* mapped PT_DYNAMIC user address */ unsigned long load_addr; /* user address at which to map binary */ unsigned long flags; #define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */ #define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */ #define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */ #define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant * displacement */ #define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */ #define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */ #define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */ #define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */ #define ELF_FDPIC_FLAG_PRESENT 0x80000000 /* T if this object is present */ }; #ifdef CONFIG_MMU extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, struct elf_fdpic_params *interp_params, unsigned long *start_stack, unsigned long *start_brk); #endif #endif /* _LINUX_ELF_FDPIC_H */