2015-03-31 09:51:19 +00:00
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/*-
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2015-03-31 12:53:07 +00:00
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* Copyright (c) 2014-2015 The FreeBSD Foundation
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2015-03-31 09:51:19 +00:00
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* All rights reserved.
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*
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* Portions of this software were developed by Andrew Turner
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <stdlib.h>
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#include "debug.h"
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#include "rtld.h"
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#include "rtld_printf.h"
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/*
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* It is possible for the compiler to emit relocations for unaligned data.
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* We handle this situation with these inlines.
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*/
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#define RELOC_ALIGNED_P(x) \
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(((uintptr_t)(x) & (sizeof(void *) - 1)) == 0)
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/*
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* This is not the correct prototype, but we only need it for
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* a function pointer to a simple asm function.
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*/
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2018-12-15 10:38:07 +00:00
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void *_rtld_tlsdesc_static(void *);
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void *_rtld_tlsdesc_undef(void *);
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2015-04-03 09:35:52 +00:00
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void *_rtld_tlsdesc_dynamic(void *);
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2015-03-31 09:51:19 +00:00
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void _exit(int);
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void
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init_pltgot(Obj_Entry *obj)
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{
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if (obj->pltgot != NULL) {
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obj->pltgot[1] = (Elf_Addr) obj;
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obj->pltgot[2] = (Elf_Addr) &_rtld_bind_start;
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}
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}
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int
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do_copy_relocations(Obj_Entry *dstobj)
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{
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const Obj_Entry *srcobj, *defobj;
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const Elf_Rela *relalim;
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const Elf_Rela *rela;
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const Elf_Sym *srcsym;
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const Elf_Sym *dstsym;
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const void *srcaddr;
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const char *name;
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void *dstaddr;
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SymLook req;
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size_t size;
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int res;
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/*
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* COPY relocs are invalid outside of the main program
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*/
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assert(dstobj->mainprog);
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2018-10-29 21:08:19 +00:00
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relalim = (const Elf_Rela *)((const char *)dstobj->rela +
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2015-03-31 09:51:19 +00:00
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dstobj->relasize);
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for (rela = dstobj->rela; rela < relalim; rela++) {
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if (ELF_R_TYPE(rela->r_info) != R_AARCH64_COPY)
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continue;
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dstaddr = (void *)(dstobj->relocbase + rela->r_offset);
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dstsym = dstobj->symtab + ELF_R_SYM(rela->r_info);
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name = dstobj->strtab + dstsym->st_name;
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size = dstsym->st_size;
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symlook_init(&req, name);
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req.ventry = fetch_ventry(dstobj, ELF_R_SYM(rela->r_info));
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req.flags = SYMLOOK_EARLY;
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2016-01-20 07:21:33 +00:00
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for (srcobj = globallist_next(dstobj); srcobj != NULL;
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srcobj = globallist_next(srcobj)) {
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2015-03-31 09:51:19 +00:00
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res = symlook_obj(&req, srcobj);
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if (res == 0) {
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srcsym = req.sym_out;
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defobj = req.defobj_out;
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break;
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}
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}
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if (srcobj == NULL) {
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2018-12-05 10:22:14 +00:00
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_rtld_error("Undefined symbol \"%s\" referenced from "
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"COPY relocation in %s", name, dstobj->path);
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2015-03-31 09:51:19 +00:00
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return (-1);
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}
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srcaddr = (const void *)(defobj->relocbase + srcsym->st_value);
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memcpy(dstaddr, srcaddr, size);
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}
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return (0);
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}
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2015-04-03 09:35:52 +00:00
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struct tls_data {
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2018-12-15 10:38:07 +00:00
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Elf_Addr dtv_gen;
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int tls_index;
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Elf_Addr tls_offs;
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2015-04-03 09:35:52 +00:00
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};
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2018-12-15 10:38:07 +00:00
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static Elf_Addr
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reloc_tlsdesc_alloc(int tlsindex, Elf_Addr tlsoffs)
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2015-04-03 09:35:52 +00:00
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{
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struct tls_data *tlsdesc;
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tlsdesc = xmalloc(sizeof(struct tls_data));
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2018-12-15 10:38:07 +00:00
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tlsdesc->dtv_gen = tls_dtv_generation;
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tlsdesc->tls_index = tlsindex;
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tlsdesc->tls_offs = tlsoffs;
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2015-04-03 09:35:52 +00:00
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2018-12-15 10:38:07 +00:00
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return ((Elf_Addr)tlsdesc);
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2015-04-03 09:35:52 +00:00
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}
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2018-12-15 10:38:07 +00:00
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static void
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reloc_tlsdesc(const Obj_Entry *obj, const Elf_Rela *rela, Elf_Addr *where,
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int flags, RtldLockState *lockstate)
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2015-04-03 09:35:52 +00:00
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{
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const Elf_Sym *def;
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const Obj_Entry *defobj;
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2018-12-15 10:38:07 +00:00
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Elf_Addr offs;
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offs = 0;
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if (ELF_R_SYM(rela->r_info) != 0) {
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def = find_symdef(ELF_R_SYM(rela->r_info), obj, &defobj, flags,
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NULL, lockstate);
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if (def == NULL)
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rtld_die();
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offs = def->st_value;
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obj = defobj;
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if (def->st_shndx == SHN_UNDEF) {
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/* Weak undefined thread variable */
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where[0] = (Elf_Addr)_rtld_tlsdesc_undef;
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where[1] = rela->r_addend;
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return;
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}
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}
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offs += rela->r_addend;
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2015-04-03 09:35:52 +00:00
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2018-12-15 10:38:07 +00:00
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if (obj->tlsoffset != 0) {
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/* Variable is in initialy allocated TLS segment */
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where[0] = (Elf_Addr)_rtld_tlsdesc_static;
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where[1] = obj->tlsoffset + offs;
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2017-01-25 17:35:11 +00:00
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} else {
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2018-12-15 10:38:07 +00:00
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/* TLS offest is unknown at load time, use dynamic resolving */
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2017-01-25 17:35:11 +00:00
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where[0] = (Elf_Addr)_rtld_tlsdesc_dynamic;
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2018-12-15 10:38:07 +00:00
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where[1] = reloc_tlsdesc_alloc(obj->tlsindex, offs);
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2017-01-25 17:35:11 +00:00
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}
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}
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2015-03-31 09:51:19 +00:00
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/*
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* Process the PLT relocations.
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*/
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int
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2018-12-15 10:38:07 +00:00
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reloc_plt(Obj_Entry *obj, int flags, RtldLockState *lockstate)
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2015-03-31 09:51:19 +00:00
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{
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const Elf_Rela *relalim;
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const Elf_Rela *rela;
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2018-12-05 10:22:14 +00:00
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relalim = (const Elf_Rela *)((const char *)obj->pltrela +
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obj->pltrelasize);
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2015-03-31 09:51:19 +00:00
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for (rela = obj->pltrela; rela < relalim; rela++) {
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Elf_Addr *where;
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where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
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switch(ELF_R_TYPE(rela->r_info)) {
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case R_AARCH64_JUMP_SLOT:
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*where += (Elf_Addr)obj->relocbase;
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break;
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case R_AARCH64_TLSDESC:
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2018-12-15 10:38:07 +00:00
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reloc_tlsdesc(obj, rela, where, SYMLOOK_IN_PLT | flags,
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lockstate);
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2015-03-31 09:51:19 +00:00
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break;
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2018-10-01 14:02:29 +00:00
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case R_AARCH64_IRELATIVE:
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obj->irelative = true;
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break;
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2018-12-08 14:58:17 +00:00
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case R_AARCH64_NONE:
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break;
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2015-03-31 09:51:19 +00:00
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default:
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_rtld_error("Unknown relocation type %u in PLT",
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(unsigned int)ELF_R_TYPE(rela->r_info));
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return (-1);
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}
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}
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return (0);
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}
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/*
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* LD_BIND_NOW was set - force relocation for all jump slots
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*/
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int
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reloc_jmpslots(Obj_Entry *obj, int flags, RtldLockState *lockstate)
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{
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const Obj_Entry *defobj;
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const Elf_Rela *relalim;
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const Elf_Rela *rela;
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const Elf_Sym *def;
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2018-12-05 10:30:53 +00:00
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if (obj->jmpslots_done)
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return (0);
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2015-03-31 09:51:19 +00:00
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2018-12-05 10:22:14 +00:00
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relalim = (const Elf_Rela *)((const char *)obj->pltrela +
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obj->pltrelasize);
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2015-03-31 09:51:19 +00:00
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for (rela = obj->pltrela; rela < relalim; rela++) {
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2018-10-01 14:02:29 +00:00
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Elf_Addr *where, target;
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2015-03-31 09:51:19 +00:00
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2015-04-03 09:35:52 +00:00
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where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
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2015-03-31 09:51:19 +00:00
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switch(ELF_R_TYPE(rela->r_info)) {
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case R_AARCH64_JUMP_SLOT:
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def = find_symdef(ELF_R_SYM(rela->r_info), obj,
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&defobj, SYMLOOK_IN_PLT | flags, NULL, lockstate);
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2018-10-01 14:02:29 +00:00
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if (def == NULL)
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2015-03-31 09:51:19 +00:00
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return (-1);
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2018-10-01 14:02:29 +00:00
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if (ELF_ST_TYPE(def->st_info) == STT_GNU_IFUNC) {
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obj->gnu_ifunc = true;
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continue;
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2015-03-31 09:51:19 +00:00
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}
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2018-10-01 14:02:29 +00:00
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target = (Elf_Addr)(defobj->relocbase + def->st_value);
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reloc_jmpslot(where, target, defobj, obj,
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(const Elf_Rel *)rela);
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2015-03-31 09:51:19 +00:00
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break;
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}
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}
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2018-12-05 10:30:53 +00:00
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obj->jmpslots_done = true;
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2015-03-31 09:51:19 +00:00
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return (0);
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}
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2020-02-13 23:42:09 +00:00
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static void
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reloc_iresolve_one(Obj_Entry *obj, const Elf_Rela *rela,
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RtldLockState *lockstate)
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{
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Elf_Addr *where, target, *ptr;
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ptr = (Elf_Addr *)(obj->relocbase + rela->r_addend);
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where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
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lock_release(rtld_bind_lock, lockstate);
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target = call_ifunc_resolver(ptr);
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wlock_acquire(rtld_bind_lock, lockstate);
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*where = target;
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}
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2015-03-31 09:51:19 +00:00
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int
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reloc_iresolve(Obj_Entry *obj, struct Struct_RtldLockState *lockstate)
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{
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2018-10-01 14:02:29 +00:00
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const Elf_Rela *relalim;
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const Elf_Rela *rela;
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2015-03-31 09:51:19 +00:00
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2018-10-01 14:02:29 +00:00
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if (!obj->irelative)
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return (0);
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2020-02-13 23:42:09 +00:00
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obj->irelative = false;
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relalim = (const Elf_Rela *)((const char *)obj->pltrela +
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obj->pltrelasize);
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2018-10-01 14:02:29 +00:00
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for (rela = obj->pltrela; rela < relalim; rela++) {
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2020-02-13 23:42:09 +00:00
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if (ELF_R_TYPE(rela->r_info) == R_AARCH64_IRELATIVE)
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reloc_iresolve_one(obj, rela, lockstate);
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}
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return (0);
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}
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int
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reloc_iresolve_nonplt(Obj_Entry *obj, struct Struct_RtldLockState *lockstate)
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{
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const Elf_Rela *relalim;
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const Elf_Rela *rela;
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if (!obj->irelative_nonplt)
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return (0);
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obj->irelative_nonplt = false;
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relalim = (const Elf_Rela *)((const char *)obj->rela + obj->relasize);
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for (rela = obj->rela; rela < relalim; rela++) {
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if (ELF_R_TYPE(rela->r_info) == R_AARCH64_IRELATIVE)
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reloc_iresolve_one(obj, rela, lockstate);
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2018-10-01 14:02:29 +00:00
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}
|
2015-03-31 09:51:19 +00:00
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return (0);
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}
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int
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reloc_gnu_ifunc(Obj_Entry *obj, int flags,
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struct Struct_RtldLockState *lockstate)
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{
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2018-10-01 14:02:29 +00:00
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const Elf_Rela *relalim;
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const Elf_Rela *rela;
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Elf_Addr *where, target;
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const Elf_Sym *def;
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|
const Obj_Entry *defobj;
|
2015-03-31 09:51:19 +00:00
|
|
|
|
2018-10-01 14:02:29 +00:00
|
|
|
if (!obj->gnu_ifunc)
|
|
|
|
return (0);
|
2018-10-29 21:08:19 +00:00
|
|
|
relalim = (const Elf_Rela *)((const char *)obj->pltrela + obj->pltrelasize);
|
2018-10-01 14:02:29 +00:00
|
|
|
for (rela = obj->pltrela; rela < relalim; rela++) {
|
|
|
|
if (ELF_R_TYPE(rela->r_info) == R_AARCH64_JUMP_SLOT) {
|
|
|
|
where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
|
|
|
|
def = find_symdef(ELF_R_SYM(rela->r_info), obj, &defobj,
|
|
|
|
SYMLOOK_IN_PLT | flags, NULL, lockstate);
|
|
|
|
if (def == NULL)
|
|
|
|
return (-1);
|
|
|
|
if (ELF_ST_TYPE(def->st_info) != STT_GNU_IFUNC)
|
|
|
|
continue;
|
|
|
|
lock_release(rtld_bind_lock, lockstate);
|
|
|
|
target = (Elf_Addr)rtld_resolve_ifunc(defobj, def);
|
|
|
|
wlock_acquire(rtld_bind_lock, lockstate);
|
|
|
|
reloc_jmpslot(where, target, defobj, obj,
|
|
|
|
(const Elf_Rel *)rela);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
obj->gnu_ifunc = false;
|
2015-03-31 09:51:19 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
Elf_Addr
|
2018-10-29 21:08:19 +00:00
|
|
|
reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
|
|
|
|
const Obj_Entry *defobj __unused, const Obj_Entry *obj __unused,
|
|
|
|
const Elf_Rel *rel)
|
2015-03-31 09:51:19 +00:00
|
|
|
{
|
|
|
|
|
2018-10-01 14:02:29 +00:00
|
|
|
assert(ELF_R_TYPE(rel->r_info) == R_AARCH64_JUMP_SLOT ||
|
|
|
|
ELF_R_TYPE(rel->r_info) == R_AARCH64_IRELATIVE);
|
2015-03-31 09:51:19 +00:00
|
|
|
|
2017-03-15 21:11:57 +00:00
|
|
|
if (*where != target && !ld_bind_not)
|
2015-03-31 09:51:19 +00:00
|
|
|
*where = target;
|
2017-03-15 21:11:57 +00:00
|
|
|
return (target);
|
2015-03-31 09:51:19 +00:00
|
|
|
}
|
|
|
|
|
2016-11-15 09:43:26 +00:00
|
|
|
void
|
2016-11-21 14:13:57 +00:00
|
|
|
ifunc_init(Elf_Auxinfo aux_info[__min_size(AT_COUNT)] __unused)
|
2016-11-15 09:43:26 +00:00
|
|
|
{
|
2018-02-03 23:14:11 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
2015-03-31 09:51:19 +00:00
|
|
|
/*
|
|
|
|
* Process non-PLT relocations
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
reloc_non_plt(Obj_Entry *obj, Obj_Entry *obj_rtld, int flags,
|
|
|
|
RtldLockState *lockstate)
|
|
|
|
{
|
|
|
|
const Obj_Entry *defobj;
|
|
|
|
const Elf_Rela *relalim;
|
|
|
|
const Elf_Rela *rela;
|
|
|
|
const Elf_Sym *def;
|
|
|
|
SymCache *cache;
|
2018-10-01 14:02:29 +00:00
|
|
|
Elf_Addr *where, symval;
|
2015-03-31 09:51:19 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The dynamic loader may be called from a thread, we have
|
|
|
|
* limited amounts of stack available so we cannot use alloca().
|
|
|
|
*/
|
|
|
|
if (obj == obj_rtld)
|
|
|
|
cache = NULL;
|
|
|
|
else
|
|
|
|
cache = calloc(obj->dynsymcount, sizeof(SymCache));
|
|
|
|
/* No need to check for NULL here */
|
|
|
|
|
2018-10-29 21:08:19 +00:00
|
|
|
relalim = (const Elf_Rela *)((const char *)obj->rela + obj->relasize);
|
2015-03-31 09:51:19 +00:00
|
|
|
for (rela = obj->rela; rela < relalim; rela++) {
|
2018-10-01 14:02:29 +00:00
|
|
|
/*
|
|
|
|
* First, resolve symbol for relocations which
|
|
|
|
* reference symbols.
|
|
|
|
*/
|
2015-03-31 09:51:19 +00:00
|
|
|
switch (ELF_R_TYPE(rela->r_info)) {
|
|
|
|
case R_AARCH64_ABS64:
|
|
|
|
case R_AARCH64_GLOB_DAT:
|
2018-10-01 14:02:29 +00:00
|
|
|
case R_AARCH64_TLS_TPREL64:
|
2018-12-08 14:58:17 +00:00
|
|
|
case R_AARCH64_TLS_DTPREL64:
|
|
|
|
case R_AARCH64_TLS_DTPMOD64:
|
2018-10-01 14:02:29 +00:00
|
|
|
def = find_symdef(ELF_R_SYM(rela->r_info), obj,
|
|
|
|
&defobj, flags, cache, lockstate);
|
2015-03-31 09:51:19 +00:00
|
|
|
if (def == NULL)
|
|
|
|
return (-1);
|
2018-10-01 14:02:29 +00:00
|
|
|
/*
|
|
|
|
* If symbol is IFUNC, only perform relocation
|
|
|
|
* when caller allowed it by passing
|
|
|
|
* SYMLOOK_IFUNC flag. Skip the relocations
|
|
|
|
* otherwise.
|
|
|
|
*
|
|
|
|
* Also error out in case IFUNC relocations
|
|
|
|
* are specified for TLS, which cannot be
|
|
|
|
* usefully interpreted.
|
|
|
|
*/
|
|
|
|
if (ELF_ST_TYPE(def->st_info) == STT_GNU_IFUNC) {
|
|
|
|
switch (ELF_R_TYPE(rela->r_info)) {
|
|
|
|
case R_AARCH64_ABS64:
|
|
|
|
case R_AARCH64_GLOB_DAT:
|
|
|
|
if ((flags & SYMLOOK_IFUNC) == 0) {
|
|
|
|
obj->non_plt_gnu_ifunc = true;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
symval = (Elf_Addr)rtld_resolve_ifunc(
|
|
|
|
defobj, def);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
_rtld_error("%s: IFUNC for TLS reloc",
|
|
|
|
obj->path);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if ((flags & SYMLOOK_IFUNC) != 0)
|
|
|
|
continue;
|
|
|
|
symval = (Elf_Addr)defobj->relocbase +
|
|
|
|
def->st_value;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if ((flags & SYMLOOK_IFUNC) != 0)
|
|
|
|
continue;
|
|
|
|
}
|
2015-03-31 09:51:19 +00:00
|
|
|
|
2018-10-01 14:02:29 +00:00
|
|
|
where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
|
|
|
|
|
|
|
|
switch (ELF_R_TYPE(rela->r_info)) {
|
|
|
|
case R_AARCH64_ABS64:
|
|
|
|
case R_AARCH64_GLOB_DAT:
|
|
|
|
*where = symval + rela->r_addend;
|
2015-03-31 09:51:19 +00:00
|
|
|
break;
|
|
|
|
case R_AARCH64_COPY:
|
|
|
|
/*
|
|
|
|
* These are deferred until all other relocations have
|
|
|
|
* been done. All we do here is make sure that the
|
|
|
|
* COPY relocation is not in a shared library. They
|
|
|
|
* are allowed only in executable files.
|
|
|
|
*/
|
|
|
|
if (!obj->mainprog) {
|
|
|
|
_rtld_error("%s: Unexpected R_AARCH64_COPY "
|
|
|
|
"relocation in shared library", obj->path);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
break;
|
2017-01-25 17:35:11 +00:00
|
|
|
case R_AARCH64_TLSDESC:
|
2018-12-15 10:38:07 +00:00
|
|
|
reloc_tlsdesc(obj, rela, where, flags, lockstate);
|
2017-01-25 17:35:11 +00:00
|
|
|
break;
|
2015-04-03 09:35:52 +00:00
|
|
|
case R_AARCH64_TLS_TPREL64:
|
|
|
|
/*
|
|
|
|
* We lazily allocate offsets for static TLS as we
|
|
|
|
* see the first relocation that references the
|
|
|
|
* TLS block. This allows us to support (small
|
|
|
|
* amounts of) static TLS in dynamically loaded
|
|
|
|
* modules. If we run out of space, we generate an
|
|
|
|
* error.
|
|
|
|
*/
|
|
|
|
if (!defobj->tls_done) {
|
2018-10-29 21:08:19 +00:00
|
|
|
if (!allocate_tls_offset(
|
|
|
|
__DECONST(Obj_Entry *, defobj))) {
|
2015-04-03 09:35:52 +00:00
|
|
|
_rtld_error(
|
|
|
|
"%s: No space available for static "
|
|
|
|
"Thread Local Storage", obj->path);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
2018-12-15 10:38:07 +00:00
|
|
|
/* Test weak undefined thread variable */
|
|
|
|
if (def->st_shndx != SHN_UNDEF) {
|
|
|
|
*where = def->st_value + rela->r_addend +
|
|
|
|
defobj->tlsoffset;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* XXX We should relocate undefined thread
|
|
|
|
* weak variable address to NULL, but how?
|
|
|
|
* Can we return error in this situation?
|
|
|
|
*/
|
|
|
|
rtld_printf("%s: Unable to relocate undefined "
|
|
|
|
"weak TLS variable\n", obj->path);
|
|
|
|
#if 0
|
|
|
|
return (-1);
|
|
|
|
#else
|
|
|
|
*where = def->st_value + rela->r_addend +
|
|
|
|
defobj->tlsoffset;
|
|
|
|
#endif
|
|
|
|
}
|
2015-04-03 09:35:52 +00:00
|
|
|
break;
|
2018-12-08 14:58:17 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* !!! BEWARE !!!
|
|
|
|
* ARM ELF ABI defines TLS_DTPMOD64 as 1029, and TLS_DTPREL64
|
|
|
|
* as 1028. But actual bfd linker and the glibc RTLD linker
|
|
|
|
* treats TLS_DTPMOD64 as 1028 and TLS_DTPREL64 1029.
|
|
|
|
*/
|
|
|
|
case R_AARCH64_TLS_DTPREL64: /* efectively is TLS_DTPMOD64 */
|
|
|
|
*where += (Elf_Addr)defobj->tlsindex;
|
|
|
|
break;
|
|
|
|
case R_AARCH64_TLS_DTPMOD64: /* efectively is TLS_DTPREL64 */
|
|
|
|
*where += (Elf_Addr)(def->st_value + rela->r_addend);
|
|
|
|
break;
|
2015-03-31 09:51:19 +00:00
|
|
|
case R_AARCH64_RELATIVE:
|
|
|
|
*where = (Elf_Addr)(obj->relocbase + rela->r_addend);
|
|
|
|
break;
|
2018-12-08 14:58:17 +00:00
|
|
|
case R_AARCH64_NONE:
|
|
|
|
break;
|
2020-02-13 23:42:09 +00:00
|
|
|
case R_AARCH64_IRELATIVE:
|
|
|
|
obj->irelative_nonplt = true;
|
|
|
|
break;
|
2015-03-31 09:51:19 +00:00
|
|
|
default:
|
|
|
|
rtld_printf("%s: Unhandled relocation %lu\n",
|
|
|
|
obj->path, ELF_R_TYPE(rela->r_info));
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
allocate_initial_tls(Obj_Entry *objs)
|
|
|
|
{
|
|
|
|
Elf_Addr **tp;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fix the size of the static TLS block by using the maximum
|
|
|
|
* offset allocated so far and adding a bit for dynamic modules to
|
|
|
|
* use.
|
|
|
|
*/
|
|
|
|
tls_static_space = tls_last_offset + tls_last_size +
|
|
|
|
RTLD_STATIC_TLS_EXTRA;
|
|
|
|
|
|
|
|
tp = (Elf_Addr **) allocate_tls(objs, NULL, TLS_TCB_SIZE, 16);
|
|
|
|
|
|
|
|
asm volatile("msr tpidr_el0, %0" : : "r"(tp));
|
|
|
|
}
|
2018-12-05 10:23:38 +00:00
|
|
|
|
|
|
|
void *
|
|
|
|
__tls_get_addr(tls_index* ti)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
void *_tp;
|
|
|
|
|
|
|
|
__asm __volatile("mrs %0, tpidr_el0" : "=r" (_tp));
|
|
|
|
p = tls_get_addr_common((Elf_Addr **)(_tp), ti->ti_module, ti->ti_offset);
|
|
|
|
|
|
|
|
return (p);
|
|
|
|
}
|