acdb0de9be
Two minor changes to the copyright and license marking for these files: (1) Stacey D Son is used instead of variations of his name. (2) The GPL boilerplate is replaced by SPDX markings. No change to the terms of the license are intended, and this matches current QEMU practice. There's no changes to the license or additional claims to any IP that others may hold in these files. All the S-o-bs in this commit have given me permission to do this to the extent they may hold rights. git blame over multiple repos and branches suggests that only minimal other material is present (much of it likely not subject to copyright protection). The project's long and complex history as well as tooling limitations make it hard to be 100% sure. Any omissions are unintentional and I will correct them as they come to light. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Sean Bruno <sbruno@FreeBSD.org> Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Kyle Evans <kevans@FreeBSD.org> Signed-off-by: Guy Yur <guyyur@gmail.com> Signed-off-by: Alexander Kabaev <kan@FreeBSD.org> Signed-off-by: Michal Meloun <mmel@FreeBSD.org> Signed-off-by: Ed Schouten <ed@nuxi.nl> Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Warner Losh <imp@bsdimp.com>
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/*
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* FreeBSD ELF definitions
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*
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* Copyright (c) 2013-2015 Stacey D. Son
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef TARGET_OS_ELF_H
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#define TARGET_OS_ELF_H
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#include "target_arch_elf.h"
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#include "elf.h"
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#include "user/tswap-target.h"
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#define bsd_get_ncpu() 1 /* until we pull in bsd-proc.[hc] */
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/* this flag is uneffective under linux too, should be deleted */
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#ifndef MAP_DENYWRITE
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#define MAP_DENYWRITE 0
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#endif
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/* should probably go in elf.h */
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#ifndef ELIBBAD
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#define ELIBBAD 80
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#endif
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#ifndef ELF_PLATFORM
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#define ELF_PLATFORM (NULL)
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#endif
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/* XXX Look at the other conflicting AT_* values. */
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#define FREEBSD_AT_NCPUS 19
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#define FREEBSD_AT_HWCAP 25
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#define FREEBSD_AT_HWCAP2 26
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#ifdef TARGET_ABI32
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#undef ELF_CLASS
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#define ELF_CLASS ELFCLASS32
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#undef bswaptls
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#define bswaptls(ptr) bswap32s(ptr)
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#endif
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/* max code+data+bss space allocated to elf interpreter */
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#define INTERP_MAP_SIZE (32 * 1024 * 1024)
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/* max code+data+bss+brk space allocated to ET_DYN executables */
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#define ET_DYN_MAP_SIZE (128 * 1024 * 1024)
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/* Necessary parameters */
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#define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
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#define TARGET_ELF_PAGESTART(_v) ((_v) & \
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~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE - 1))
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#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE - 1))
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#define DLINFO_ITEMS 14
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static abi_ulong target_create_elf_tables(abi_ulong p, int argc, int envc,
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abi_ulong stringp,
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struct elfhdr *exec,
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abi_ulong load_addr,
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abi_ulong load_bias,
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abi_ulong interp_load_addr,
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struct image_info *info)
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{
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abi_ulong features, sp;
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int size;
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const int n = sizeof(elf_addr_t);
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target_auxents_sz = 0;
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sp = p;
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/*
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* Force 16 byte _final_ alignment here for generality.
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*/
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sp = sp & ~(abi_ulong)15;
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size = (DLINFO_ITEMS + 1) * 2;
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size += envc + argc + 2;
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size += 1; /* argc itself */
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size *= n;
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if (size & 15) {
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sp -= 16 - (size & 15);
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}
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/*
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* FreeBSD defines elf_addr_t as Elf32_Off / Elf64_Off
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*/
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#define NEW_AUX_ENT(id, val) do { \
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sp -= n; put_user_ual(val, sp); \
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sp -= n; put_user_ual(id, sp); \
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target_auxents_sz += 2 * n; \
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} while (0)
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NEW_AUX_ENT(AT_NULL, 0);
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/* There must be exactly DLINFO_ITEMS entries here. */
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NEW_AUX_ENT(AT_PHDR, (abi_ulong)(load_addr + exec->e_phoff));
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NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof(struct elf_phdr)));
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NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
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NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE));
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NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_load_addr));
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NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
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NEW_AUX_ENT(FREEBSD_AT_NCPUS, (abi_ulong)bsd_get_ncpu());
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NEW_AUX_ENT(AT_ENTRY, load_bias + exec->e_entry);
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features = ELF_HWCAP;
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NEW_AUX_ENT(FREEBSD_AT_HWCAP, features);
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#ifdef ELF_HWCAP2
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features = ELF_HWCAP2;
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NEW_AUX_ENT(FREEBSD_AT_HWCAP2, features);
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#endif
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NEW_AUX_ENT(AT_UID, (abi_ulong)getuid());
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NEW_AUX_ENT(AT_EUID, (abi_ulong)geteuid());
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NEW_AUX_ENT(AT_GID, (abi_ulong)getgid());
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NEW_AUX_ENT(AT_EGID, (abi_ulong)getegid());
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target_auxents = sp; /* Note where the aux entries are in the target */
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#ifdef ARCH_DLINFO
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/*
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* ARCH_DLINFO must come last so platform specific code can enforce
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* special alignment requirements on the AUXV if necessary (eg. PPC).
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*/
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ARCH_DLINFO;
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#endif
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#undef NEW_AUX_ENT
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sp = loader_build_argptr(envc, argc, sp, stringp);
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return sp;
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}
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#endif /* TARGET_OS_ELF_H */
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