17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 55aefb655Srie * Common Development and Distribution License (the "License"). 65aefb655Srie * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21141040e8Srie 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. 247c478bd9Sstevel@tonic-gate * Copyright (c) 1988 AT&T 257c478bd9Sstevel@tonic-gate * All Rights Reserved 267c478bd9Sstevel@tonic-gate * 27bb3b4f6cSRod Evans * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 287c478bd9Sstevel@tonic-gate * Use is subject to license terms. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate 31ba2be530Sab /* Get the x86 version of the relocation engine */ 32ba2be530Sab #define DO_RELOC_LIBLD_X86 33ba2be530Sab 347c478bd9Sstevel@tonic-gate #include <string.h> 357c478bd9Sstevel@tonic-gate #include <stdio.h> 367c478bd9Sstevel@tonic-gate #include <sys/elf_386.h> 375aefb655Srie #include <debug.h> 385aefb655Srie #include <reloc.h> 39ba2be530Sab #include <i386/machdep_x86.h> 407c478bd9Sstevel@tonic-gate #include "msg.h" 417c478bd9Sstevel@tonic-gate #include "_libld.h" 427c478bd9Sstevel@tonic-gate 43*57ef7aa9SRod Evans /* 44*57ef7aa9SRod Evans * Search the GOT index list for a GOT entry with a matching reference. 45*57ef7aa9SRod Evans */ 46*57ef7aa9SRod Evans /* ARGSUSED3 */ 47*57ef7aa9SRod Evans static Gotndx * 48*57ef7aa9SRod Evans ld_find_got_ndx(Alist *alp, Gotref gref, Ofl_desc *ofl, Rel_desc *rdesc) 49*57ef7aa9SRod Evans { 50*57ef7aa9SRod Evans Aliste idx; 51*57ef7aa9SRod Evans Gotndx *gnp; 52*57ef7aa9SRod Evans 53*57ef7aa9SRod Evans if ((gref == GOT_REF_TLSLD) && ofl->ofl_tlsldgotndx) 54*57ef7aa9SRod Evans return (ofl->ofl_tlsldgotndx); 55*57ef7aa9SRod Evans 56*57ef7aa9SRod Evans for (ALIST_TRAVERSE(alp, idx, gnp)) { 57*57ef7aa9SRod Evans if (gnp->gn_gotref == gref) 58*57ef7aa9SRod Evans return (gnp); 59*57ef7aa9SRod Evans } 60*57ef7aa9SRod Evans return (NULL); 61*57ef7aa9SRod Evans } 62*57ef7aa9SRod Evans 63*57ef7aa9SRod Evans static Xword 64*57ef7aa9SRod Evans ld_calc_got_offset(Rel_desc *rdesc, Ofl_desc *ofl) 65*57ef7aa9SRod Evans { 66*57ef7aa9SRod Evans Os_desc *osp = ofl->ofl_osgot; 67*57ef7aa9SRod Evans Sym_desc *sdp = rdesc->rel_sym; 68*57ef7aa9SRod Evans Xword gotndx; 69*57ef7aa9SRod Evans Gotref gref; 70*57ef7aa9SRod Evans Gotndx *gnp; 71*57ef7aa9SRod Evans 72*57ef7aa9SRod Evans if (rdesc->rel_flags & FLG_REL_DTLS) 73*57ef7aa9SRod Evans gref = GOT_REF_TLSGD; 74*57ef7aa9SRod Evans else if (rdesc->rel_flags & FLG_REL_MTLS) 75*57ef7aa9SRod Evans gref = GOT_REF_TLSLD; 76*57ef7aa9SRod Evans else if (rdesc->rel_flags & FLG_REL_STLS) 77*57ef7aa9SRod Evans gref = GOT_REF_TLSIE; 78*57ef7aa9SRod Evans else 79*57ef7aa9SRod Evans gref = GOT_REF_GENERIC; 80ba2be530Sab 81*57ef7aa9SRod Evans gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, ofl, NULL); 82*57ef7aa9SRod Evans assert(gnp); 83*57ef7aa9SRod Evans 84*57ef7aa9SRod Evans gotndx = (Xword)gnp->gn_gotndx; 85*57ef7aa9SRod Evans 86*57ef7aa9SRod Evans if ((rdesc->rel_flags & FLG_REL_DTLS) && 87*57ef7aa9SRod Evans (rdesc->rel_rtype == R_386_TLS_DTPOFF32)) 88*57ef7aa9SRod Evans gotndx++; 89*57ef7aa9SRod Evans 90*57ef7aa9SRod Evans return ((Xword)(osp->os_shdr->sh_addr + (gotndx * M_GOT_ENTSIZE))); 91*57ef7aa9SRod Evans } 92ba2be530Sab 93ba2be530Sab static Word 945aefb655Srie ld_init_rel(Rel_desc *reld, void *reloc) 957c478bd9Sstevel@tonic-gate { 96*57ef7aa9SRod Evans Rel *rel = (Rel *)reloc; 977c478bd9Sstevel@tonic-gate 987c478bd9Sstevel@tonic-gate /* LINTED */ 99ba2be530Sab reld->rel_rtype = (Word)ELF_R_TYPE(rel->r_info, M_MACH); 1007c478bd9Sstevel@tonic-gate reld->rel_roffset = rel->r_offset; 1017c478bd9Sstevel@tonic-gate reld->rel_raddend = 0; 1027c478bd9Sstevel@tonic-gate reld->rel_typedata = 0; 1037c478bd9Sstevel@tonic-gate 1047c478bd9Sstevel@tonic-gate return ((Word)ELF_R_SYM(rel->r_info)); 1057c478bd9Sstevel@tonic-gate } 1067c478bd9Sstevel@tonic-gate 107ba2be530Sab static void 1085aefb655Srie ld_mach_eflags(Ehdr *ehdr, Ofl_desc *ofl) 1097c478bd9Sstevel@tonic-gate { 1105aefb655Srie ofl->ofl_dehdr->e_flags |= ehdr->e_flags; 1117c478bd9Sstevel@tonic-gate } 1127c478bd9Sstevel@tonic-gate 113ba2be530Sab static void 1145aefb655Srie ld_mach_make_dynamic(Ofl_desc *ofl, size_t *cnt) 1157c478bd9Sstevel@tonic-gate { 1167c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) { 1177c478bd9Sstevel@tonic-gate /* 1187c478bd9Sstevel@tonic-gate * Create this entry if we are going to create a PLT table. 1197c478bd9Sstevel@tonic-gate */ 1207c478bd9Sstevel@tonic-gate if (ofl->ofl_pltcnt) 1217c478bd9Sstevel@tonic-gate (*cnt)++; /* DT_PLTGOT */ 1227c478bd9Sstevel@tonic-gate } 1237c478bd9Sstevel@tonic-gate } 1247c478bd9Sstevel@tonic-gate 125ba2be530Sab static void 126d326b23bSrie ld_mach_update_odynamic(Ofl_desc *ofl, Dyn **dyn) 1277c478bd9Sstevel@tonic-gate { 1285aefb655Srie if (((ofl->ofl_flags & FLG_OF_RELOBJ) == 0) && ofl->ofl_pltcnt) { 1295aefb655Srie (*dyn)->d_tag = DT_PLTGOT; 1305aefb655Srie if (ofl->ofl_osgot) 1315aefb655Srie (*dyn)->d_un.d_ptr = ofl->ofl_osgot->os_shdr->sh_addr; 1325aefb655Srie else 1335aefb655Srie (*dyn)->d_un.d_ptr = 0; 1345aefb655Srie (*dyn)++; 1357c478bd9Sstevel@tonic-gate } 1367c478bd9Sstevel@tonic-gate } 1377c478bd9Sstevel@tonic-gate 138ba2be530Sab static Xword 1395aefb655Srie ld_calc_plt_addr(Sym_desc *sdp, Ofl_desc *ofl) 1407c478bd9Sstevel@tonic-gate { 1417c478bd9Sstevel@tonic-gate Xword value; 1427c478bd9Sstevel@tonic-gate 1437c478bd9Sstevel@tonic-gate value = (Xword)(ofl->ofl_osplt->os_shdr->sh_addr) + 1447c478bd9Sstevel@tonic-gate M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * M_PLT_ENTSIZE); 1457c478bd9Sstevel@tonic-gate return (value); 1467c478bd9Sstevel@tonic-gate } 1477c478bd9Sstevel@tonic-gate 1487c478bd9Sstevel@tonic-gate /* 1497c478bd9Sstevel@tonic-gate * Build a single plt entry - code is: 1507c478bd9Sstevel@tonic-gate * if (building a.out) 1517c478bd9Sstevel@tonic-gate * JMP *got_off 1527c478bd9Sstevel@tonic-gate * else 1537c478bd9Sstevel@tonic-gate * JMP *got_off@GOT(%ebx) 1547c478bd9Sstevel@tonic-gate * PUSHL &rel_off 1557c478bd9Sstevel@tonic-gate * JMP -n(%pc) # -n is pcrel offset to first plt entry 1567c478bd9Sstevel@tonic-gate * 1577c478bd9Sstevel@tonic-gate * The got_off@GOT entry gets filled with the address of the PUSHL, 1587c478bd9Sstevel@tonic-gate * so the first pass through the plt jumps back here, jumping 1597c478bd9Sstevel@tonic-gate * in turn to the first plt entry, which jumps to the dynamic 1607c478bd9Sstevel@tonic-gate * linker. The dynamic linker then patches the GOT, rerouting 1617c478bd9Sstevel@tonic-gate * future plt calls to the proper destination. 1627c478bd9Sstevel@tonic-gate */ 1637c478bd9Sstevel@tonic-gate static void 1647c478bd9Sstevel@tonic-gate plt_entry(Ofl_desc * ofl, Word rel_off, Sym_desc * sdp) 1657c478bd9Sstevel@tonic-gate { 166b3fbe5e6Sseizo uchar_t *pltent, *gotent; 1677c478bd9Sstevel@tonic-gate Sword plt_off; 1687c478bd9Sstevel@tonic-gate Word got_off; 169ba2be530Sab int bswap = (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) != 0; 1707c478bd9Sstevel@tonic-gate 1717c478bd9Sstevel@tonic-gate got_off = sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 1727c478bd9Sstevel@tonic-gate plt_off = M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * 1737c478bd9Sstevel@tonic-gate M_PLT_ENTSIZE); 174b3fbe5e6Sseizo pltent = (uchar_t *)(ofl->ofl_osplt->os_outdata->d_buf) + plt_off; 175b3fbe5e6Sseizo gotent = (uchar_t *)(ofl->ofl_osgot->os_outdata->d_buf) + got_off; 1767c478bd9Sstevel@tonic-gate 1777c478bd9Sstevel@tonic-gate /* 1787c478bd9Sstevel@tonic-gate * Fill in the got entry with the address of the next instruction. 1797c478bd9Sstevel@tonic-gate */ 1807c478bd9Sstevel@tonic-gate /* LINTED */ 1817c478bd9Sstevel@tonic-gate *(Word *)gotent = ofl->ofl_osplt->os_shdr->sh_addr + plt_off + 182b3fbe5e6Sseizo M_PLT_INSSIZE; 183ba2be530Sab if (bswap) 184ba2be530Sab /* LINTED */ 185ba2be530Sab *(Word *)gotent = ld_bswap_Word(*(Word *)gotent); 1867c478bd9Sstevel@tonic-gate 1877c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_SHAROBJ)) { 1887c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 1897c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_DISP_IND; 1907c478bd9Sstevel@tonic-gate pltent += 2; 1917c478bd9Sstevel@tonic-gate /* LINTED */ 1927c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(ofl->ofl_osgot->os_shdr->sh_addr + 193de777a60Sab got_off); 1947c478bd9Sstevel@tonic-gate } else { 1957c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 1967c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_REG_DISP_IND; 1977c478bd9Sstevel@tonic-gate pltent += 2; 1987c478bd9Sstevel@tonic-gate /* LINTED */ 1997c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)got_off; 2007c478bd9Sstevel@tonic-gate } 201ba2be530Sab if (bswap) 202ba2be530Sab /* LINTED */ 203ba2be530Sab *(Word *)pltent = ld_bswap_Word(*(Word *)pltent); 2047c478bd9Sstevel@tonic-gate pltent += 4; 2057c478bd9Sstevel@tonic-gate 2067c478bd9Sstevel@tonic-gate pltent[0] = M_INST_PUSHL; 2077c478bd9Sstevel@tonic-gate pltent++; 2087c478bd9Sstevel@tonic-gate /* LINTED */ 2097c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)rel_off; 210ba2be530Sab if (bswap) 211ba2be530Sab /* LINTED */ 212ba2be530Sab *(Word *)pltent = ld_bswap_Word(*(Word *)pltent); 2137c478bd9Sstevel@tonic-gate pltent += 4; 2147c478bd9Sstevel@tonic-gate 2157c478bd9Sstevel@tonic-gate plt_off = -(plt_off + 16); /* JMP, PUSHL, JMP take 16 bytes */ 2167c478bd9Sstevel@tonic-gate pltent[0] = M_INST_JMP; 2177c478bd9Sstevel@tonic-gate pltent++; 2187c478bd9Sstevel@tonic-gate /* LINTED */ 2197c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)plt_off; 220ba2be530Sab if (bswap) 221ba2be530Sab /* LINTED */ 222ba2be530Sab *(Word *)pltent = ld_bswap_Word(*(Word *)pltent); 2237c478bd9Sstevel@tonic-gate } 2247c478bd9Sstevel@tonic-gate 225ba2be530Sab static uintptr_t 2265aefb655Srie ld_perform_outreloc(Rel_desc * orsp, Ofl_desc * ofl) 2277c478bd9Sstevel@tonic-gate { 2287c478bd9Sstevel@tonic-gate Os_desc * relosp, * osp = 0; 2297c478bd9Sstevel@tonic-gate Word ndx, roffset, value; 2307c478bd9Sstevel@tonic-gate Rel rea; 2317c478bd9Sstevel@tonic-gate char *relbits; 2327c478bd9Sstevel@tonic-gate Sym_desc * sdp, * psym = (Sym_desc *)0; 2337c478bd9Sstevel@tonic-gate int sectmoved = 0; 2347c478bd9Sstevel@tonic-gate 2357c478bd9Sstevel@tonic-gate sdp = orsp->rel_sym; 2367c478bd9Sstevel@tonic-gate 2377c478bd9Sstevel@tonic-gate /* 2387c478bd9Sstevel@tonic-gate * If the section this relocation is against has been discarded 2397c478bd9Sstevel@tonic-gate * (-zignore), then also discard (skip) the relocation itself. 2407c478bd9Sstevel@tonic-gate */ 2417c478bd9Sstevel@tonic-gate if (orsp->rel_isdesc && ((orsp->rel_flags & 2427c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | FLG_REL_PLT | FLG_REL_NOINFO)) == 0) && 2437c478bd9Sstevel@tonic-gate (orsp->rel_isdesc->is_flags & FLG_IS_DISCARD)) { 2445aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, orsp)); 2457c478bd9Sstevel@tonic-gate return (1); 2467c478bd9Sstevel@tonic-gate } 2477c478bd9Sstevel@tonic-gate 2487c478bd9Sstevel@tonic-gate /* 2497c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or expanded move 2507c478bd9Sstevel@tonic-gate * table, adjust the relocation entries. 2517c478bd9Sstevel@tonic-gate */ 2527c478bd9Sstevel@tonic-gate if (orsp->rel_move) 2535aefb655Srie ld_adj_movereloc(ofl, orsp); 2547c478bd9Sstevel@tonic-gate 2557c478bd9Sstevel@tonic-gate /* 2567c478bd9Sstevel@tonic-gate * If this is a relocation against a section using a partial initialized 2577c478bd9Sstevel@tonic-gate * symbol, adjust the embedded symbol info. 2587c478bd9Sstevel@tonic-gate * 2597c478bd9Sstevel@tonic-gate * The second argument of the am_I_partial() is the value stored at the 2607c478bd9Sstevel@tonic-gate * target address relocation is going to be applied. 2617c478bd9Sstevel@tonic-gate */ 2627c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) { 263*57ef7aa9SRod Evans if (ofl->ofl_parsyms && 2647c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 2657c478bd9Sstevel@tonic-gate /* LINTED */ 2665aefb655Srie (psym = ld_am_I_partial(orsp, *(Xword *) 267b3fbe5e6Sseizo ((uchar_t *)(orsp->rel_isdesc->is_indata->d_buf) + 2687c478bd9Sstevel@tonic-gate orsp->rel_roffset)))) { 2695aefb655Srie DBG_CALL(Dbg_move_outsctadj(ofl->ofl_lml, psym)); 2707c478bd9Sstevel@tonic-gate sectmoved = 1; 271de777a60Sab } 2727c478bd9Sstevel@tonic-gate } 2737c478bd9Sstevel@tonic-gate 2747c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 2757c478bd9Sstevel@tonic-gate 2767c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_GOT) { 2777c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 2785aefb655Srie roffset = (Word)ld_calc_got_offset(orsp, ofl); 2795aefb655Srie 2807c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_PLT) { 2817c478bd9Sstevel@tonic-gate /* 2827c478bd9Sstevel@tonic-gate * Note that relocations for PLT's actually 2837c478bd9Sstevel@tonic-gate * cause a relocation againt the GOT. 2847c478bd9Sstevel@tonic-gate */ 2857c478bd9Sstevel@tonic-gate osp = ofl->ofl_osplt; 2867c478bd9Sstevel@tonic-gate roffset = (Word) (ofl->ofl_osgot->os_shdr->sh_addr) + 2877c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 2887c478bd9Sstevel@tonic-gate 2897c478bd9Sstevel@tonic-gate plt_entry(ofl, osp->os_relosdesc->os_szoutrels, sdp); 2907c478bd9Sstevel@tonic-gate 2917c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_BSS) { 2927c478bd9Sstevel@tonic-gate /* 2937c478bd9Sstevel@tonic-gate * This must be a R_386_COPY. For these set the roffset to 2947c478bd9Sstevel@tonic-gate * point to the new symbols location. 2957c478bd9Sstevel@tonic-gate */ 2967c478bd9Sstevel@tonic-gate osp = ofl->ofl_isbss->is_osdesc; 2977c478bd9Sstevel@tonic-gate roffset = (Word)value; 2987c478bd9Sstevel@tonic-gate } else { 2997c478bd9Sstevel@tonic-gate osp = orsp->rel_osdesc; 3007c478bd9Sstevel@tonic-gate 3017c478bd9Sstevel@tonic-gate /* 3027c478bd9Sstevel@tonic-gate * Calculate virtual offset of reference point; equals offset 3037c478bd9Sstevel@tonic-gate * into section + vaddr of section for loadable sections, or 3047c478bd9Sstevel@tonic-gate * offset plus section displacement for nonloadable sections. 3057c478bd9Sstevel@tonic-gate */ 3067c478bd9Sstevel@tonic-gate roffset = orsp->rel_roffset + 3077c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(orsp->rel_isdesc->is_indata); 3087c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) 3097c478bd9Sstevel@tonic-gate roffset += orsp->rel_isdesc->is_osdesc-> 3107c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 3117c478bd9Sstevel@tonic-gate } 3127c478bd9Sstevel@tonic-gate 3137c478bd9Sstevel@tonic-gate if ((osp == 0) || ((relosp = osp->os_relosdesc) == 0)) 3147c478bd9Sstevel@tonic-gate relosp = ofl->ofl_osrel; 3157c478bd9Sstevel@tonic-gate 3167c478bd9Sstevel@tonic-gate /* 3177c478bd9Sstevel@tonic-gate * Assign the symbols index for the output relocation. If the 3187c478bd9Sstevel@tonic-gate * relocation refers to a SECTION symbol then it's index is based upon 3197c478bd9Sstevel@tonic-gate * the output sections symbols index. Otherwise the index can be 3207c478bd9Sstevel@tonic-gate * derived from the symbols index itself. 3217c478bd9Sstevel@tonic-gate */ 3227c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_386_RELATIVE) 3237c478bd9Sstevel@tonic-gate ndx = STN_UNDEF; 3247c478bd9Sstevel@tonic-gate else if ((orsp->rel_flags & FLG_REL_SCNNDX) || 3257c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION)) { 3267c478bd9Sstevel@tonic-gate if (sectmoved == 0) { 3277c478bd9Sstevel@tonic-gate /* 3287c478bd9Sstevel@tonic-gate * Check for a null input section. This can 3297c478bd9Sstevel@tonic-gate * occur if this relocation references a symbol 3307c478bd9Sstevel@tonic-gate * generated by sym_add_sym(). 3317c478bd9Sstevel@tonic-gate */ 332*57ef7aa9SRod Evans if (sdp->sd_isc && sdp->sd_isc->is_osdesc) 333*57ef7aa9SRod Evans ndx = sdp->sd_isc->is_osdesc->os_identndx; 3347c478bd9Sstevel@tonic-gate else 3357c478bd9Sstevel@tonic-gate ndx = sdp->sd_shndx; 3367c478bd9Sstevel@tonic-gate } else 33735450702SAli Bahrami ndx = ofl->ofl_parexpnndx; 3387c478bd9Sstevel@tonic-gate } else 3397c478bd9Sstevel@tonic-gate ndx = sdp->sd_symndx; 3407c478bd9Sstevel@tonic-gate 341cce0e03bSab /* 342cce0e03bSab * If we have a replacement value for the relocation 343cce0e03bSab * target, put it in place now. 344cce0e03bSab */ 345cce0e03bSab if (orsp->rel_flags & FLG_REL_NADDEND) { 346cce0e03bSab Xword addend = orsp->rel_raddend; 347cce0e03bSab uchar_t *addr; 348cce0e03bSab 349cce0e03bSab /* 350cce0e03bSab * Get the address of the data item we need to modify. 351cce0e03bSab */ 352cce0e03bSab addr = (uchar_t *)((uintptr_t)orsp->rel_roffset + 353cce0e03bSab (uintptr_t)_elf_getxoff(orsp->rel_isdesc->is_indata)); 354cce0e03bSab addr += (uintptr_t)orsp->rel_osdesc->os_outdata->d_buf; 355cce0e03bSab if (ld_reloc_targval_set(ofl, orsp, addr, addend) == 0) 356cce0e03bSab return (S_ERROR); 357cce0e03bSab } 358cce0e03bSab 3597c478bd9Sstevel@tonic-gate relbits = (char *)relosp->os_outdata->d_buf; 3607c478bd9Sstevel@tonic-gate 3617c478bd9Sstevel@tonic-gate rea.r_info = ELF_R_INFO(ndx, orsp->rel_rtype); 3627c478bd9Sstevel@tonic-gate rea.r_offset = roffset; 3635aefb655Srie DBG_CALL(Dbg_reloc_out(ofl, ELF_DBG_LD, SHT_REL, &rea, relosp->os_name, 3645aefb655Srie orsp->rel_sname)); 3657c478bd9Sstevel@tonic-gate 3667c478bd9Sstevel@tonic-gate /* 3677c478bd9Sstevel@tonic-gate * Assert we haven't walked off the end of our relocation table. 3687c478bd9Sstevel@tonic-gate */ 3697c478bd9Sstevel@tonic-gate assert(relosp->os_szoutrels <= relosp->os_shdr->sh_size); 3707c478bd9Sstevel@tonic-gate 3717c478bd9Sstevel@tonic-gate (void) memcpy((relbits + relosp->os_szoutrels), 3727c478bd9Sstevel@tonic-gate (char *)&rea, sizeof (Rel)); 3737c478bd9Sstevel@tonic-gate relosp->os_szoutrels += sizeof (Rel); 3747c478bd9Sstevel@tonic-gate 3757c478bd9Sstevel@tonic-gate /* 3767c478bd9Sstevel@tonic-gate * Determine if this relocation is against a non-writable, allocatable 3777c478bd9Sstevel@tonic-gate * section. If so we may need to provide a text relocation diagnostic. 3787c478bd9Sstevel@tonic-gate * Note that relocations against the .plt (R_386_JMP_SLOT) actually 3797c478bd9Sstevel@tonic-gate * result in modifications to the .got. 3807c478bd9Sstevel@tonic-gate */ 3817c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_386_JMP_SLOT) 3827c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 3837c478bd9Sstevel@tonic-gate 3845aefb655Srie ld_reloc_remain_entry(orsp, osp, ofl); 3857c478bd9Sstevel@tonic-gate return (1); 3867c478bd9Sstevel@tonic-gate } 3877c478bd9Sstevel@tonic-gate 3887c478bd9Sstevel@tonic-gate /* 3897c478bd9Sstevel@tonic-gate * i386 Instructions for TLS processing 3907c478bd9Sstevel@tonic-gate */ 391b3fbe5e6Sseizo static uchar_t tlsinstr_gd_ie[] = { 3927c478bd9Sstevel@tonic-gate /* 3937c478bd9Sstevel@tonic-gate * 0x00 movl %gs:0x0, %eax 3947c478bd9Sstevel@tonic-gate */ 3957c478bd9Sstevel@tonic-gate 0x65, 0xa1, 0x00, 0x00, 0x00, 0x00, 3967c478bd9Sstevel@tonic-gate /* 3977c478bd9Sstevel@tonic-gate * 0x06 addl x(%eax), %eax 3987c478bd9Sstevel@tonic-gate * 0x0c ... 3997c478bd9Sstevel@tonic-gate */ 4007c478bd9Sstevel@tonic-gate 0x03, 0x80, 0x00, 0x00, 0x00, 0x00 4017c478bd9Sstevel@tonic-gate }; 4027c478bd9Sstevel@tonic-gate 403b3fbe5e6Sseizo static uchar_t tlsinstr_gd_le[] = { 4047c478bd9Sstevel@tonic-gate /* 4057c478bd9Sstevel@tonic-gate * 0x00 movl %gs:0x0, %eax 4067c478bd9Sstevel@tonic-gate */ 4077c478bd9Sstevel@tonic-gate 0x65, 0xa1, 0x00, 0x00, 0x00, 0x00, 4087c478bd9Sstevel@tonic-gate /* 4097c478bd9Sstevel@tonic-gate * 0x06 addl $0x0, %eax 4107c478bd9Sstevel@tonic-gate */ 4117c478bd9Sstevel@tonic-gate 0x05, 0x00, 0x00, 0x00, 0x00, 4127c478bd9Sstevel@tonic-gate /* 4137c478bd9Sstevel@tonic-gate * 0x0b nop 4147c478bd9Sstevel@tonic-gate * 0x0c 4157c478bd9Sstevel@tonic-gate */ 4167c478bd9Sstevel@tonic-gate 0x90 4177c478bd9Sstevel@tonic-gate }; 4187c478bd9Sstevel@tonic-gate 419b3fbe5e6Sseizo static uchar_t tlsinstr_gd_ie_movgs[] = { 4207c478bd9Sstevel@tonic-gate /* 4217c478bd9Sstevel@tonic-gate * movl %gs:0x0,%eax 4227c478bd9Sstevel@tonic-gate */ 4237c478bd9Sstevel@tonic-gate 0x65, 0xa1, 0x00, 0x00, 0x00, 00 4247c478bd9Sstevel@tonic-gate }; 4257c478bd9Sstevel@tonic-gate 4267c478bd9Sstevel@tonic-gate #define TLS_GD_IE_MOV 0x8b /* movl opcode */ 4277c478bd9Sstevel@tonic-gate #define TLS_GD_IE_POP 0x58 /* popl + reg */ 4287c478bd9Sstevel@tonic-gate 4297c478bd9Sstevel@tonic-gate #define TLS_GD_LE_MOVL 0xb8 /* movl + reg */ 4307c478bd9Sstevel@tonic-gate 4317c478bd9Sstevel@tonic-gate #define TLS_NOP 0x90 /* NOP instruction */ 4327c478bd9Sstevel@tonic-gate 4337c478bd9Sstevel@tonic-gate #define MODRM_MSK_MOD 0xc0 4347c478bd9Sstevel@tonic-gate #define MODRM_MSK_RO 0x38 4357c478bd9Sstevel@tonic-gate #define MODRM_MSK_RM 0x07 4367c478bd9Sstevel@tonic-gate 4377c478bd9Sstevel@tonic-gate #define SIB_MSK_SS 0xc0 4387c478bd9Sstevel@tonic-gate #define SIB_MSK_IND 0x38 4397c478bd9Sstevel@tonic-gate #define SIB_MSK_BS 0x07 4407c478bd9Sstevel@tonic-gate 4415aefb655Srie static Fixupret 4425aefb655Srie tls_fixups(Ofl_desc *ofl, Rel_desc *arsp) 4437c478bd9Sstevel@tonic-gate { 4447c478bd9Sstevel@tonic-gate Sym_desc *sdp = arsp->rel_sym; 4457c478bd9Sstevel@tonic-gate Word rtype = arsp->rel_rtype; 446b3fbe5e6Sseizo uchar_t *offset, r1, r2; 4477c478bd9Sstevel@tonic-gate 448b3fbe5e6Sseizo offset = (uchar_t *)((uintptr_t)arsp->rel_roffset + 449b3fbe5e6Sseizo (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) + 450b3fbe5e6Sseizo (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf); 4517c478bd9Sstevel@tonic-gate 4527c478bd9Sstevel@tonic-gate if (sdp->sd_ref == REF_DYN_NEED) { 4537c478bd9Sstevel@tonic-gate /* 4547c478bd9Sstevel@tonic-gate * IE reference model 4557c478bd9Sstevel@tonic-gate */ 4567c478bd9Sstevel@tonic-gate switch (rtype) { 4577c478bd9Sstevel@tonic-gate case R_386_TLS_GD: 4587c478bd9Sstevel@tonic-gate /* 4597c478bd9Sstevel@tonic-gate * Transition: 4607c478bd9Sstevel@tonic-gate * 0x0 leal x@tlsgd(,r1,1), %eax 4617c478bd9Sstevel@tonic-gate * 0x7 call ___tls_get_addr 4627c478bd9Sstevel@tonic-gate * 0xc 4637c478bd9Sstevel@tonic-gate * To: 4647c478bd9Sstevel@tonic-gate * 0x0 movl %gs:0, %eax 4657c478bd9Sstevel@tonic-gate * 0x6 addl x@gotntpoff(r1), %eax 4667c478bd9Sstevel@tonic-gate */ 4675aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 468051d39bbSrie R_386_TLS_GOTIE, arsp)); 4697c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_GOTIE; 4707c478bd9Sstevel@tonic-gate arsp->rel_roffset += 5; 4715aefb655Srie 4727c478bd9Sstevel@tonic-gate /* 473051d39bbSrie * Adjust 'offset' to beginning of instruction 4747c478bd9Sstevel@tonic-gate * sequence. 4757c478bd9Sstevel@tonic-gate */ 4767c478bd9Sstevel@tonic-gate offset -= 3; 4777c478bd9Sstevel@tonic-gate r1 = (offset[2] & SIB_MSK_IND) >> 3; 4787c478bd9Sstevel@tonic-gate (void) memcpy(offset, tlsinstr_gd_ie, 4795aefb655Srie sizeof (tlsinstr_gd_ie)); 4805aefb655Srie 4817c478bd9Sstevel@tonic-gate /* 4827c478bd9Sstevel@tonic-gate * set register %r1 into the addl 4837c478bd9Sstevel@tonic-gate * instruction. 4847c478bd9Sstevel@tonic-gate */ 4857c478bd9Sstevel@tonic-gate offset[0x7] |= r1; 4867c478bd9Sstevel@tonic-gate return (FIX_RELOC); 4875aefb655Srie 4887c478bd9Sstevel@tonic-gate case R_386_TLS_GD_PLT: 4897c478bd9Sstevel@tonic-gate /* 4907c478bd9Sstevel@tonic-gate * Fixup done via the TLS_GD relocation 4917c478bd9Sstevel@tonic-gate */ 4925aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 493051d39bbSrie R_386_NONE, arsp)); 4947c478bd9Sstevel@tonic-gate return (FIX_DONE); 4957c478bd9Sstevel@tonic-gate } 4967c478bd9Sstevel@tonic-gate } 4977c478bd9Sstevel@tonic-gate 4987c478bd9Sstevel@tonic-gate /* 4997c478bd9Sstevel@tonic-gate * LE reference model 5007c478bd9Sstevel@tonic-gate */ 5017c478bd9Sstevel@tonic-gate switch (rtype) { 5027c478bd9Sstevel@tonic-gate case R_386_TLS_GD: 5037c478bd9Sstevel@tonic-gate /* 5047c478bd9Sstevel@tonic-gate * Transition: 5057c478bd9Sstevel@tonic-gate * 0x0 leal x@tlsgd(,r1,1), %eax 5067c478bd9Sstevel@tonic-gate * 0x7 call ___tls_get_addr 5077c478bd9Sstevel@tonic-gate * 0xc 5087c478bd9Sstevel@tonic-gate * To: 5097c478bd9Sstevel@tonic-gate * 0x0 movl %gs:0, %eax 5107c478bd9Sstevel@tonic-gate * 0x6 addl $x@ntpoff, %eax 5117c478bd9Sstevel@tonic-gate * 0xb nop 5127c478bd9Sstevel@tonic-gate * 0xc 5137c478bd9Sstevel@tonic-gate */ 5145aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 515051d39bbSrie R_386_TLS_LE, arsp)); 5167c478bd9Sstevel@tonic-gate 5177c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 5187c478bd9Sstevel@tonic-gate arsp->rel_roffset += 4; 5195aefb655Srie 5207c478bd9Sstevel@tonic-gate /* 521051d39bbSrie * Adjust 'offset' to beginning of instruction 5227c478bd9Sstevel@tonic-gate * sequence. 5237c478bd9Sstevel@tonic-gate */ 5247c478bd9Sstevel@tonic-gate offset -= 3; 5257c478bd9Sstevel@tonic-gate (void) memcpy(offset, tlsinstr_gd_le, 5265aefb655Srie sizeof (tlsinstr_gd_le)); 5277c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5285aefb655Srie 5297c478bd9Sstevel@tonic-gate case R_386_TLS_GD_PLT: 5307c478bd9Sstevel@tonic-gate case R_386_PLT32: 5317c478bd9Sstevel@tonic-gate /* 5327c478bd9Sstevel@tonic-gate * Fixup done via the TLS_GD relocation 5337c478bd9Sstevel@tonic-gate */ 5345aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 535051d39bbSrie R_386_NONE, arsp)); 5367c478bd9Sstevel@tonic-gate return (FIX_DONE); 5375aefb655Srie 5387c478bd9Sstevel@tonic-gate case R_386_TLS_LDM_PLT: 5395aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 540051d39bbSrie R_386_NONE, arsp)); 5415aefb655Srie 5427c478bd9Sstevel@tonic-gate /* 5437c478bd9Sstevel@tonic-gate * Transition: 5447c478bd9Sstevel@tonic-gate * call __tls_get_addr() 5457c478bd9Sstevel@tonic-gate * to: 5467c478bd9Sstevel@tonic-gate * nop 5477c478bd9Sstevel@tonic-gate * nop 5487c478bd9Sstevel@tonic-gate * nop 5497c478bd9Sstevel@tonic-gate * nop 5507c478bd9Sstevel@tonic-gate * nop 5517c478bd9Sstevel@tonic-gate */ 5527c478bd9Sstevel@tonic-gate *(offset - 1) = TLS_NOP; 5537c478bd9Sstevel@tonic-gate *(offset) = TLS_NOP; 5547c478bd9Sstevel@tonic-gate *(offset + 1) = TLS_NOP; 5557c478bd9Sstevel@tonic-gate *(offset + 2) = TLS_NOP; 5567c478bd9Sstevel@tonic-gate *(offset + 3) = TLS_NOP; 5577c478bd9Sstevel@tonic-gate return (FIX_DONE); 5585aefb655Srie 5597c478bd9Sstevel@tonic-gate case R_386_TLS_LDM: 5605aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 561051d39bbSrie R_386_NONE, arsp)); 5625aefb655Srie 5637c478bd9Sstevel@tonic-gate /* 5647c478bd9Sstevel@tonic-gate * Transition: 5657c478bd9Sstevel@tonic-gate * 5667c478bd9Sstevel@tonic-gate * 0x00 leal x1@tlsldm(%ebx), %eax 5677c478bd9Sstevel@tonic-gate * 0x06 call ___tls_get_addr 5687c478bd9Sstevel@tonic-gate * 5697c478bd9Sstevel@tonic-gate * to: 5707c478bd9Sstevel@tonic-gate * 5717c478bd9Sstevel@tonic-gate * 0x00 movl %gs:0, %eax 5727c478bd9Sstevel@tonic-gate */ 5737c478bd9Sstevel@tonic-gate (void) memcpy(offset - 2, tlsinstr_gd_ie_movgs, 5745aefb655Srie sizeof (tlsinstr_gd_ie_movgs)); 5757c478bd9Sstevel@tonic-gate return (FIX_DONE); 5765aefb655Srie 5777c478bd9Sstevel@tonic-gate case R_386_TLS_LDO_32: 5787c478bd9Sstevel@tonic-gate /* 5797c478bd9Sstevel@tonic-gate * Instructions: 5807c478bd9Sstevel@tonic-gate * 5817c478bd9Sstevel@tonic-gate * 0x10 leal x1@dtpoff(%eax), %edx R_386_TLS_LDO_32 5827c478bd9Sstevel@tonic-gate * to 5837c478bd9Sstevel@tonic-gate * 0x10 leal x1@ntpoff(%eax), %edx R_386_TLS_LE 5847c478bd9Sstevel@tonic-gate * 5857c478bd9Sstevel@tonic-gate */ 5867c478bd9Sstevel@tonic-gate offset -= 2; 5877c478bd9Sstevel@tonic-gate 5885aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 589051d39bbSrie R_386_TLS_LE, arsp)); 5907c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 5917c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5925aefb655Srie 5937c478bd9Sstevel@tonic-gate case R_386_TLS_GOTIE: 5947c478bd9Sstevel@tonic-gate /* 5957c478bd9Sstevel@tonic-gate * These transitions are a little different than the 5967c478bd9Sstevel@tonic-gate * others, in that we could have multiple instructions 5977c478bd9Sstevel@tonic-gate * pointed to by a single relocation. Depending upon the 5987c478bd9Sstevel@tonic-gate * instruction, we perform a different code transition. 5997c478bd9Sstevel@tonic-gate * 6007c478bd9Sstevel@tonic-gate * Here's the known transitions: 6017c478bd9Sstevel@tonic-gate * 6027c478bd9Sstevel@tonic-gate * 1) movl foo@gotntpoff(%reg1), %reg2 6037c478bd9Sstevel@tonic-gate * 0x8b, 0x80 | (reg2 << 3) | reg1, foo@gotntpoff 6047c478bd9Sstevel@tonic-gate * 6057c478bd9Sstevel@tonic-gate * 2) addl foo@gotntpoff(%reg1), %reg2 6067c478bd9Sstevel@tonic-gate * 0x03, 0x80 | (reg2 << 3) | reg1, foo@gotntpoff 6077c478bd9Sstevel@tonic-gate * 6087c478bd9Sstevel@tonic-gate * Transitions IE -> LE 6097c478bd9Sstevel@tonic-gate * 6107c478bd9Sstevel@tonic-gate * 1) movl $foo@ntpoff, %reg2 6117c478bd9Sstevel@tonic-gate * 0xc7, 0xc0 | reg2, foo@ntpoff 6127c478bd9Sstevel@tonic-gate * 6137c478bd9Sstevel@tonic-gate * 2) addl $foo@ntpoff, %reg2 6147c478bd9Sstevel@tonic-gate * 0x81, 0xc0 | reg2, foo@ntpoff 6157c478bd9Sstevel@tonic-gate * 6167c478bd9Sstevel@tonic-gate * Note: reg1 != 4 (%esp) 6177c478bd9Sstevel@tonic-gate */ 6185aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 619051d39bbSrie R_386_TLS_LE, arsp)); 6207c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 6215aefb655Srie 6227c478bd9Sstevel@tonic-gate offset -= 2; 6237c478bd9Sstevel@tonic-gate r2 = (offset[1] & MODRM_MSK_RO) >> 3; 6247c478bd9Sstevel@tonic-gate if (offset[0] == 0x8b) { 6257c478bd9Sstevel@tonic-gate /* case 1 above */ 6267c478bd9Sstevel@tonic-gate offset[0] = 0xc7; /* movl */ 6277c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 6287c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6297c478bd9Sstevel@tonic-gate } 6307c478bd9Sstevel@tonic-gate 6317c478bd9Sstevel@tonic-gate if (offset[0] == 0x03) { 6327c478bd9Sstevel@tonic-gate /* case 2 above */ 6337c478bd9Sstevel@tonic-gate assert(offset[0] == 0x03); 6347c478bd9Sstevel@tonic-gate offset[0] = 0x81; /* addl */ 6357c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 6367c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6377c478bd9Sstevel@tonic-gate } 6387c478bd9Sstevel@tonic-gate 6397c478bd9Sstevel@tonic-gate /* 6407c478bd9Sstevel@tonic-gate * Unexpected instruction sequence - fatal error. 6417c478bd9Sstevel@tonic-gate */ 642de777a60Sab { 643de777a60Sab Conv_inv_buf_t inv_buf; 644de777a60Sab 645de777a60Sab eprintf(ofl->ofl_lml, ERR_FATAL, 646de777a60Sab MSG_INTL(MSG_REL_BADTLSINS), 647de777a60Sab conv_reloc_386_type(arsp->rel_rtype, 0, &inv_buf), 648de777a60Sab arsp->rel_isdesc->is_file->ifl_name, 649de777a60Sab demangle(arsp->rel_sname), 650de777a60Sab arsp->rel_isdesc->is_name, 651de777a60Sab EC_OFF(arsp->rel_roffset)); 652de777a60Sab } 6537c478bd9Sstevel@tonic-gate return (FIX_ERROR); 6545aefb655Srie 6557c478bd9Sstevel@tonic-gate case R_386_TLS_IE: 6567c478bd9Sstevel@tonic-gate /* 6577c478bd9Sstevel@tonic-gate * These transitions are a little different than the 6587c478bd9Sstevel@tonic-gate * others, in that we could have multiple instructions 6597c478bd9Sstevel@tonic-gate * pointed to by a single relocation. Depending upon the 6607c478bd9Sstevel@tonic-gate * instruction, we perform a different code transition. 6617c478bd9Sstevel@tonic-gate * 6627c478bd9Sstevel@tonic-gate * Here's the known transitions: 6637c478bd9Sstevel@tonic-gate * 1) movl foo@indntpoff, %eax 6647c478bd9Sstevel@tonic-gate * 0xa1, foo@indntpoff 6657c478bd9Sstevel@tonic-gate * 6667c478bd9Sstevel@tonic-gate * 2) movl foo@indntpoff, %eax 6677c478bd9Sstevel@tonic-gate * 0x8b, 0x05 | (reg << 3), foo@gotntpoff 6687c478bd9Sstevel@tonic-gate * 6697c478bd9Sstevel@tonic-gate * 3) addl foo@indntpoff, %eax 6707c478bd9Sstevel@tonic-gate * 0x03, 0x05 | (reg << 3), foo@gotntpoff 6717c478bd9Sstevel@tonic-gate * 6727c478bd9Sstevel@tonic-gate * Transitions IE -> LE 6737c478bd9Sstevel@tonic-gate * 6747c478bd9Sstevel@tonic-gate * 1) movl $foo@ntpoff, %eax 6757c478bd9Sstevel@tonic-gate * 0xb8, foo@ntpoff 6767c478bd9Sstevel@tonic-gate * 6777c478bd9Sstevel@tonic-gate * 2) movl $foo@ntpoff, %reg 6787c478bd9Sstevel@tonic-gate * 0xc7, 0xc0 | reg, foo@ntpoff 6797c478bd9Sstevel@tonic-gate * 6807c478bd9Sstevel@tonic-gate * 3) addl $foo@ntpoff, %reg 6817c478bd9Sstevel@tonic-gate * 0x81, 0xc0 | reg, foo@ntpoff 6827c478bd9Sstevel@tonic-gate */ 6837c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 6847c478bd9Sstevel@tonic-gate offset--; 6857c478bd9Sstevel@tonic-gate if (offset[0] == 0xa1) { 6867c478bd9Sstevel@tonic-gate /* case 1 above */ 6877c478bd9Sstevel@tonic-gate offset[0] = 0xb8; /* movl */ 6887c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6897c478bd9Sstevel@tonic-gate } 6907c478bd9Sstevel@tonic-gate 6917c478bd9Sstevel@tonic-gate offset--; 6927c478bd9Sstevel@tonic-gate if (offset[0] == 0x8b) { 6937c478bd9Sstevel@tonic-gate /* case 2 above */ 6947c478bd9Sstevel@tonic-gate r2 = (offset[1] & MODRM_MSK_RO) >> 3; 6957c478bd9Sstevel@tonic-gate offset[0] = 0xc7; /* movl */ 6967c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 6977c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6987c478bd9Sstevel@tonic-gate } 6997c478bd9Sstevel@tonic-gate if (offset[0] == 0x03) { 7007c478bd9Sstevel@tonic-gate /* case 3 above */ 7017c478bd9Sstevel@tonic-gate r2 = (offset[1] & MODRM_MSK_RO) >> 3; 7027c478bd9Sstevel@tonic-gate offset[0] = 0x81; /* addl */ 7037c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 7047c478bd9Sstevel@tonic-gate return (FIX_RELOC); 7057c478bd9Sstevel@tonic-gate } 7067c478bd9Sstevel@tonic-gate /* 7077c478bd9Sstevel@tonic-gate * Unexpected instruction sequence - fatal error. 7087c478bd9Sstevel@tonic-gate */ 709de777a60Sab { 710de777a60Sab Conv_inv_buf_t inv_buf; 711de777a60Sab 712de777a60Sab eprintf(ofl->ofl_lml, ERR_FATAL, 713de777a60Sab MSG_INTL(MSG_REL_BADTLSINS), 714de777a60Sab conv_reloc_386_type(arsp->rel_rtype, 0, &inv_buf), 715de777a60Sab arsp->rel_isdesc->is_file->ifl_name, 716de777a60Sab demangle(arsp->rel_sname), 717de777a60Sab arsp->rel_isdesc->is_name, 718de777a60Sab EC_OFF(arsp->rel_roffset)); 719de777a60Sab } 7207c478bd9Sstevel@tonic-gate return (FIX_ERROR); 7217c478bd9Sstevel@tonic-gate } 7227c478bd9Sstevel@tonic-gate return (FIX_RELOC); 7237c478bd9Sstevel@tonic-gate } 7247c478bd9Sstevel@tonic-gate 725ba2be530Sab static uintptr_t 7265aefb655Srie ld_do_activerelocs(Ofl_desc *ofl) 7277c478bd9Sstevel@tonic-gate { 728141040e8Srie Rel_desc *arsp; 729141040e8Srie Rel_cache *rcp; 730*57ef7aa9SRod Evans Aliste idx; 7317c478bd9Sstevel@tonic-gate uintptr_t return_code = 1; 7321d9df23bSab ofl_flag_t flags = ofl->ofl_flags; 7337c478bd9Sstevel@tonic-gate 734*57ef7aa9SRod Evans if (ofl->ofl_actrels) 7357010c12aSrie DBG_CALL(Dbg_reloc_doact_title(ofl->ofl_lml)); 7367010c12aSrie 7377c478bd9Sstevel@tonic-gate /* 738141040e8Srie * Process active relocations. 7397c478bd9Sstevel@tonic-gate */ 740*57ef7aa9SRod Evans for (APLIST_TRAVERSE(ofl->ofl_actrels, idx, rcp)) { 7417c478bd9Sstevel@tonic-gate /* LINTED */ 7427c478bd9Sstevel@tonic-gate for (arsp = (Rel_desc *)(rcp + 1); 7437c478bd9Sstevel@tonic-gate arsp < rcp->rc_free; arsp++) { 744b3fbe5e6Sseizo uchar_t *addr; 745141040e8Srie Xword value; 7467c478bd9Sstevel@tonic-gate Sym_desc *sdp; 7477c478bd9Sstevel@tonic-gate const char *ifl_name; 748141040e8Srie Xword refaddr; 7497c478bd9Sstevel@tonic-gate int moved = 0; 7507c478bd9Sstevel@tonic-gate Gotref gref; 7517c478bd9Sstevel@tonic-gate 7527c478bd9Sstevel@tonic-gate /* 7537c478bd9Sstevel@tonic-gate * If the section this relocation is against has been 7547c478bd9Sstevel@tonic-gate * discarded (-zignore), then discard (skip) the 7557c478bd9Sstevel@tonic-gate * relocation itself. 7567c478bd9Sstevel@tonic-gate */ 7577c478bd9Sstevel@tonic-gate if ((arsp->rel_isdesc->is_flags & FLG_IS_DISCARD) && 7587c478bd9Sstevel@tonic-gate ((arsp->rel_flags & 7597c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | 7607c478bd9Sstevel@tonic-gate FLG_REL_PLT | FLG_REL_NOINFO)) == 0)) { 7615aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, 7625aefb655Srie M_MACH, arsp)); 7637c478bd9Sstevel@tonic-gate continue; 7647c478bd9Sstevel@tonic-gate } 7657c478bd9Sstevel@tonic-gate 7667c478bd9Sstevel@tonic-gate /* 767d2d5cf7cSAli Bahrami * We determine what the 'got reference' 7687c478bd9Sstevel@tonic-gate * model (if required) is at this point. This 7697c478bd9Sstevel@tonic-gate * needs to be done before tls_fixup() since 7707c478bd9Sstevel@tonic-gate * it may 'transition' our instructions. 7717c478bd9Sstevel@tonic-gate * 7727c478bd9Sstevel@tonic-gate * The got table entries have already been assigned, 7737c478bd9Sstevel@tonic-gate * and we bind to those initial entries. 7747c478bd9Sstevel@tonic-gate */ 7757c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_DTLS) 7767c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 7777c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_MTLS) 7787c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 7797c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_STLS) 7807c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 7817c478bd9Sstevel@tonic-gate else 7827c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 7837c478bd9Sstevel@tonic-gate 7847c478bd9Sstevel@tonic-gate /* 7857c478bd9Sstevel@tonic-gate * Perform any required TLS fixups. 7867c478bd9Sstevel@tonic-gate */ 7877c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_TLSFIX) { 7887c478bd9Sstevel@tonic-gate Fixupret ret; 7897c478bd9Sstevel@tonic-gate 7905aefb655Srie if ((ret = tls_fixups(ofl, arsp)) == FIX_ERROR) 7917c478bd9Sstevel@tonic-gate return (S_ERROR); 7927c478bd9Sstevel@tonic-gate if (ret == FIX_DONE) 7937c478bd9Sstevel@tonic-gate continue; 7947c478bd9Sstevel@tonic-gate } 7957c478bd9Sstevel@tonic-gate 7967c478bd9Sstevel@tonic-gate /* 7977c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or 7987c478bd9Sstevel@tonic-gate * expanded move table, adjust the relocation entries. 7997c478bd9Sstevel@tonic-gate */ 8007c478bd9Sstevel@tonic-gate if (arsp->rel_move) 8015aefb655Srie ld_adj_movereloc(ofl, arsp); 8027c478bd9Sstevel@tonic-gate 8037c478bd9Sstevel@tonic-gate sdp = arsp->rel_sym; 8047c478bd9Sstevel@tonic-gate refaddr = arsp->rel_roffset + 8057c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(arsp->rel_isdesc->is_indata); 8067c478bd9Sstevel@tonic-gate 8077c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_CLVAL) 8087c478bd9Sstevel@tonic-gate value = 0; 8097c478bd9Sstevel@tonic-gate else if (ELF_ST_TYPE(sdp->sd_sym->st_info) == 8107c478bd9Sstevel@tonic-gate STT_SECTION) { 8117c478bd9Sstevel@tonic-gate /* 8127c478bd9Sstevel@tonic-gate * The value for a symbol pointing to a SECTION 8137c478bd9Sstevel@tonic-gate * is based off of that sections position. 8147c478bd9Sstevel@tonic-gate */ 815b26cc8daSAli Bahrami if (sdp->sd_isc->is_flags & FLG_IS_RELUPD) { 816b26cc8daSAli Bahrami Sym_desc *sym; 817b26cc8daSAli Bahrami Xword radd; 818b26cc8daSAli Bahrami uchar_t *raddr = (uchar_t *) 819b26cc8daSAli Bahrami arsp->rel_isdesc->is_indata->d_buf + 820b26cc8daSAli Bahrami arsp->rel_roffset; 821b26cc8daSAli Bahrami 8227c478bd9Sstevel@tonic-gate /* 823b26cc8daSAli Bahrami * This is a REL platform. Hence, the 824b26cc8daSAli Bahrami * second argument of ld_am_I_partial() 825b26cc8daSAli Bahrami * is the value stored at the target 826b26cc8daSAli Bahrami * address where the relocation is 827b26cc8daSAli Bahrami * going to be applied. 8287c478bd9Sstevel@tonic-gate */ 829b26cc8daSAli Bahrami if (ld_reloc_targval_get(ofl, arsp, 830b26cc8daSAli Bahrami raddr, &radd) == 0) 831b26cc8daSAli Bahrami return (S_ERROR); 832b26cc8daSAli Bahrami sym = ld_am_I_partial(arsp, radd); 833b26cc8daSAli Bahrami if (sym) { 834b26cc8daSAli Bahrami Sym *osym = sym->sd_osym; 835b26cc8daSAli Bahrami 836b26cc8daSAli Bahrami /* 837b26cc8daSAli Bahrami * The symbol was moved, so 838b26cc8daSAli Bahrami * adjust the value relative 839b26cc8daSAli Bahrami * to the new section. 840b26cc8daSAli Bahrami */ 841b26cc8daSAli Bahrami value = sym->sd_sym->st_value; 842b26cc8daSAli Bahrami moved = 1; 843b26cc8daSAli Bahrami 844b26cc8daSAli Bahrami /* 845b26cc8daSAli Bahrami * The original raddend covers 846b26cc8daSAli Bahrami * the displacement from the 847b26cc8daSAli Bahrami * section start to the desired 848b26cc8daSAli Bahrami * address. The value computed 849b26cc8daSAli Bahrami * above gets us from the 850b26cc8daSAli Bahrami * section start to the start 851b26cc8daSAli Bahrami * of the symbol range. Adjust 852b26cc8daSAli Bahrami * the old raddend to remove the 853b26cc8daSAli Bahrami * offset from section start to 854b26cc8daSAli Bahrami * symbol start, leaving the 855b26cc8daSAli Bahrami * displacement within the 856b26cc8daSAli Bahrami * range of the symbol. 857b26cc8daSAli Bahrami */ 858b26cc8daSAli Bahrami if (osym->st_value != 0) { 859b26cc8daSAli Bahrami radd -= osym->st_value; 860b26cc8daSAli Bahrami if (ld_reloc_targval_set 861b26cc8daSAli Bahrami (ofl, arsp, raddr, 862b26cc8daSAli Bahrami radd) == 0) 863b26cc8daSAli Bahrami return ( 864b26cc8daSAli Bahrami S_ERROR); 865b26cc8daSAli Bahrami } 866b26cc8daSAli Bahrami } 867b26cc8daSAli Bahrami } 868b26cc8daSAli Bahrami if (!moved) { 869141040e8Srie value = _elf_getxoff( 870141040e8Srie sdp->sd_isc->is_indata); 8717c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & 8727c478bd9Sstevel@tonic-gate SHF_ALLOC) 873141040e8Srie value += sdp->sd_isc-> 874141040e8Srie is_osdesc->os_shdr->sh_addr; 8757c478bd9Sstevel@tonic-gate } 8767c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & SHF_TLS) 8777c478bd9Sstevel@tonic-gate value -= ofl->ofl_tlsphdr->p_vaddr; 8782926dd2eSrie 8792926dd2eSrie } else if (IS_SIZE(arsp->rel_rtype)) { 8802926dd2eSrie /* 8812926dd2eSrie * Size relocations require the symbols size. 8822926dd2eSrie */ 8832926dd2eSrie value = sdp->sd_sym->st_size; 884141040e8Srie } else { 8857c478bd9Sstevel@tonic-gate /* 8867010c12aSrie * Else the value is the symbols value. 8877c478bd9Sstevel@tonic-gate */ 8887c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 889141040e8Srie } 8907c478bd9Sstevel@tonic-gate 8917c478bd9Sstevel@tonic-gate /* 8927c478bd9Sstevel@tonic-gate * Relocation against the GLOBAL_OFFSET_TABLE. 8937c478bd9Sstevel@tonic-gate */ 8947c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_GOT) 8957c478bd9Sstevel@tonic-gate arsp->rel_osdesc = ofl->ofl_osgot; 8967c478bd9Sstevel@tonic-gate 8977c478bd9Sstevel@tonic-gate /* 8987c478bd9Sstevel@tonic-gate * If loadable and not producing a relocatable object 8997c478bd9Sstevel@tonic-gate * add the sections virtual address to the reference 9007c478bd9Sstevel@tonic-gate * address. 9017c478bd9Sstevel@tonic-gate */ 9027c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_LOAD) && 903141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) 9047c478bd9Sstevel@tonic-gate refaddr += arsp->rel_isdesc->is_osdesc-> 9057c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 9067c478bd9Sstevel@tonic-gate 9077c478bd9Sstevel@tonic-gate /* 9087c478bd9Sstevel@tonic-gate * If this entry has a PLT assigned to it, it's 9097c478bd9Sstevel@tonic-gate * value is actually the address of the PLT (and 9107c478bd9Sstevel@tonic-gate * not the address of the function). 9117c478bd9Sstevel@tonic-gate */ 9127c478bd9Sstevel@tonic-gate if (IS_PLT(arsp->rel_rtype)) { 9137c478bd9Sstevel@tonic-gate if (sdp->sd_aux && sdp->sd_aux->sa_PLTndx) 9145aefb655Srie value = ld_calc_plt_addr(sdp, ofl); 9157c478bd9Sstevel@tonic-gate } 9167c478bd9Sstevel@tonic-gate 917141040e8Srie /* 918141040e8Srie * Determine whether the value needs further adjustment. 919141040e8Srie * Filter through the attributes of the relocation to 920141040e8Srie * determine what adjustment is required. Note, many 921141040e8Srie * of the following cases are only applicable when a 922141040e8Srie * .got is present. As a .got is not generated when a 923141040e8Srie * relocatable object is being built, any adjustments 924141040e8Srie * that require a .got need to be skipped. 925141040e8Srie */ 926141040e8Srie if ((arsp->rel_flags & FLG_REL_GOT) && 927141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 9287c478bd9Sstevel@tonic-gate Xword R1addr; 9297c478bd9Sstevel@tonic-gate uintptr_t R2addr; 9307c478bd9Sstevel@tonic-gate Word gotndx; 9317c478bd9Sstevel@tonic-gate Gotndx *gnp; 9327c478bd9Sstevel@tonic-gate 9337c478bd9Sstevel@tonic-gate /* 9347c478bd9Sstevel@tonic-gate * Perform relocation against GOT table. Since 9357c478bd9Sstevel@tonic-gate * this doesn't fit exactly into a relocation 9367c478bd9Sstevel@tonic-gate * we place the appropriate byte in the GOT 9377c478bd9Sstevel@tonic-gate * directly 9387c478bd9Sstevel@tonic-gate * 9397c478bd9Sstevel@tonic-gate * Calculate offset into GOT at which to apply 9407c478bd9Sstevel@tonic-gate * the relocation. 9417c478bd9Sstevel@tonic-gate */ 942*57ef7aa9SRod Evans gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, 943*57ef7aa9SRod Evans ofl, NULL); 9447c478bd9Sstevel@tonic-gate assert(gnp); 9457c478bd9Sstevel@tonic-gate 9467c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_386_TLS_DTPOFF32) 9477c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx + 1; 9487c478bd9Sstevel@tonic-gate else 9497c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx; 9507c478bd9Sstevel@tonic-gate 9517c478bd9Sstevel@tonic-gate R1addr = (Xword)(gotndx * M_GOT_ENTSIZE); 9527c478bd9Sstevel@tonic-gate 9537c478bd9Sstevel@tonic-gate /* 9547c478bd9Sstevel@tonic-gate * Add the GOTs data's offset. 9557c478bd9Sstevel@tonic-gate */ 9567c478bd9Sstevel@tonic-gate R2addr = R1addr + (uintptr_t) 9577c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_outdata->d_buf; 9587c478bd9Sstevel@tonic-gate 9595aefb655Srie DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, 9605aefb655Srie ELF_DBG_LD, M_MACH, SHT_REL, 9617c478bd9Sstevel@tonic-gate arsp->rel_rtype, R1addr, value, 9627c478bd9Sstevel@tonic-gate arsp->rel_sname, arsp->rel_osdesc)); 9637c478bd9Sstevel@tonic-gate 9647c478bd9Sstevel@tonic-gate /* 9657c478bd9Sstevel@tonic-gate * And do it. 9667c478bd9Sstevel@tonic-gate */ 967f3324781Sab if (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) 968f3324781Sab *(Xword *)R2addr = 969ba2be530Sab ld_bswap_Xword(value); 970f3324781Sab else 971f3324781Sab *(Xword *)R2addr = value; 9727c478bd9Sstevel@tonic-gate continue; 9737c478bd9Sstevel@tonic-gate 974141040e8Srie } else if (IS_GOT_BASED(arsp->rel_rtype) && 975141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 9767c478bd9Sstevel@tonic-gate value -= ofl->ofl_osgot->os_shdr->sh_addr; 977141040e8Srie 978141040e8Srie } else if (IS_GOT_PC(arsp->rel_rtype) && 979141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 980141040e8Srie value = 981141040e8Srie (Xword)(ofl->ofl_osgot->os_shdr->sh_addr) - 982141040e8Srie refaddr; 983141040e8Srie 9847c478bd9Sstevel@tonic-gate } else if ((IS_PC_RELATIVE(arsp->rel_rtype)) && 985141040e8Srie (((flags & FLG_OF_RELOBJ) == 0) || 9867c478bd9Sstevel@tonic-gate (arsp->rel_osdesc == sdp->sd_isc->is_osdesc))) { 9877c478bd9Sstevel@tonic-gate value -= refaddr; 988141040e8Srie 9897c478bd9Sstevel@tonic-gate } else if (IS_TLS_INS(arsp->rel_rtype) && 990141040e8Srie IS_GOT_RELATIVE(arsp->rel_rtype) && 991141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 9927c478bd9Sstevel@tonic-gate Gotndx *gnp; 9937c478bd9Sstevel@tonic-gate 994*57ef7aa9SRod Evans gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, 995*57ef7aa9SRod Evans ofl, NULL); 9967c478bd9Sstevel@tonic-gate assert(gnp); 997141040e8Srie value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 9987c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_386_TLS_IE) { 999141040e8Srie value += 1000141040e8Srie ofl->ofl_osgot->os_shdr->sh_addr; 10017c478bd9Sstevel@tonic-gate } 1002141040e8Srie 1003141040e8Srie } else if (IS_GOT_RELATIVE(arsp->rel_rtype) && 1004141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 1005141040e8Srie Gotndx *gnp; 10067c478bd9Sstevel@tonic-gate 1007*57ef7aa9SRod Evans gnp = ld_find_got_ndx(sdp->sd_GOTndxs, 1008*57ef7aa9SRod Evans GOT_REF_GENERIC, ofl, NULL); 10097c478bd9Sstevel@tonic-gate assert(gnp); 1010141040e8Srie value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 1011141040e8Srie 1012141040e8Srie } else if ((arsp->rel_flags & FLG_REL_STLS) && 1013141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 10147c478bd9Sstevel@tonic-gate Xword tlsstatsize; 1015141040e8Srie 10167c478bd9Sstevel@tonic-gate /* 10177c478bd9Sstevel@tonic-gate * This is the LE TLS reference model. Static 10187c478bd9Sstevel@tonic-gate * offset is hard-coded. 10197c478bd9Sstevel@tonic-gate */ 1020141040e8Srie tlsstatsize = 1021141040e8Srie S_ROUND(ofl->ofl_tlsphdr->p_memsz, 10227c478bd9Sstevel@tonic-gate M_TLSSTATALIGN); 10237c478bd9Sstevel@tonic-gate value = tlsstatsize - value; 1024141040e8Srie 10257c478bd9Sstevel@tonic-gate /* 1026141040e8Srie * Since this code is fixed up, it assumes a 1027141040e8Srie * negative offset that can be added to the 1028141040e8Srie * thread pointer. 10297c478bd9Sstevel@tonic-gate */ 10307c478bd9Sstevel@tonic-gate if ((arsp->rel_rtype == R_386_TLS_LDO_32) || 10317c478bd9Sstevel@tonic-gate (arsp->rel_rtype == R_386_TLS_LE)) 10327c478bd9Sstevel@tonic-gate value = -value; 10337c478bd9Sstevel@tonic-gate } 10347c478bd9Sstevel@tonic-gate 10357c478bd9Sstevel@tonic-gate if (arsp->rel_isdesc->is_file) 10367c478bd9Sstevel@tonic-gate ifl_name = arsp->rel_isdesc->is_file->ifl_name; 10377c478bd9Sstevel@tonic-gate else 10387c478bd9Sstevel@tonic-gate ifl_name = MSG_INTL(MSG_STR_NULL); 10397c478bd9Sstevel@tonic-gate 10407c478bd9Sstevel@tonic-gate /* 10417c478bd9Sstevel@tonic-gate * Make sure we have data to relocate. Compiler and 10427c478bd9Sstevel@tonic-gate * assembler developers have been known to generate 10437c478bd9Sstevel@tonic-gate * relocations against invalid sections (normally .bss), 10447c478bd9Sstevel@tonic-gate * so for their benefit give them sufficient information 10457c478bd9Sstevel@tonic-gate * to help analyze the problem. End users should never 10467c478bd9Sstevel@tonic-gate * see this. 10477c478bd9Sstevel@tonic-gate */ 10487c478bd9Sstevel@tonic-gate if (arsp->rel_isdesc->is_indata->d_buf == 0) { 1049de777a60Sab Conv_inv_buf_t inv_buf; 1050de777a60Sab 10515aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 10525aefb655Srie MSG_INTL(MSG_REL_EMPTYSEC), 1053de777a60Sab conv_reloc_386_type(arsp->rel_rtype, 1054de777a60Sab 0, &inv_buf), 10557c478bd9Sstevel@tonic-gate ifl_name, demangle(arsp->rel_sname), 10567c478bd9Sstevel@tonic-gate arsp->rel_isdesc->is_name); 10577c478bd9Sstevel@tonic-gate return (S_ERROR); 10587c478bd9Sstevel@tonic-gate } 10597c478bd9Sstevel@tonic-gate 10607c478bd9Sstevel@tonic-gate /* 10617c478bd9Sstevel@tonic-gate * Get the address of the data item we need to modify. 10627c478bd9Sstevel@tonic-gate */ 1063b3fbe5e6Sseizo addr = (uchar_t *)((uintptr_t)arsp->rel_roffset + 1064b3fbe5e6Sseizo (uintptr_t)_elf_getxoff(arsp->rel_isdesc-> 1065b3fbe5e6Sseizo is_indata)); 10667c478bd9Sstevel@tonic-gate 10675aefb655Srie DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, ELF_DBG_LD, 10685aefb655Srie M_MACH, SHT_REL, arsp->rel_rtype, EC_NATPTR(addr), 10695aefb655Srie value, arsp->rel_sname, arsp->rel_osdesc)); 10707c478bd9Sstevel@tonic-gate addr += (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf; 10717c478bd9Sstevel@tonic-gate 10725aefb655Srie if ((((uintptr_t)addr - (uintptr_t)ofl->ofl_nehdr) > 1073b3fbe5e6Sseizo ofl->ofl_size) || (arsp->rel_roffset > 10747c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_shdr->sh_size)) { 1075de777a60Sab Conv_inv_buf_t inv_buf; 1076de777a60Sab int class; 10777c478bd9Sstevel@tonic-gate 10787c478bd9Sstevel@tonic-gate if (((uintptr_t)addr - 10795aefb655Srie (uintptr_t)ofl->ofl_nehdr) > ofl->ofl_size) 10807c478bd9Sstevel@tonic-gate class = ERR_FATAL; 10817c478bd9Sstevel@tonic-gate else 10827c478bd9Sstevel@tonic-gate class = ERR_WARNING; 10837c478bd9Sstevel@tonic-gate 10845aefb655Srie eprintf(ofl->ofl_lml, class, 10855aefb655Srie MSG_INTL(MSG_REL_INVALOFFSET), 1086de777a60Sab conv_reloc_386_type(arsp->rel_rtype, 1087de777a60Sab 0, &inv_buf), 10887c478bd9Sstevel@tonic-gate ifl_name, arsp->rel_isdesc->is_name, 10897c478bd9Sstevel@tonic-gate demangle(arsp->rel_sname), 10907c478bd9Sstevel@tonic-gate EC_ADDR((uintptr_t)addr - 10915aefb655Srie (uintptr_t)ofl->ofl_nehdr)); 10927c478bd9Sstevel@tonic-gate 10937c478bd9Sstevel@tonic-gate if (class == ERR_FATAL) { 10947c478bd9Sstevel@tonic-gate return_code = S_ERROR; 10957c478bd9Sstevel@tonic-gate continue; 10967c478bd9Sstevel@tonic-gate } 10977c478bd9Sstevel@tonic-gate } 10987c478bd9Sstevel@tonic-gate 10997c478bd9Sstevel@tonic-gate /* 11007c478bd9Sstevel@tonic-gate * The relocation is additive. Ignore the previous 11017c478bd9Sstevel@tonic-gate * symbol value if this local partial symbol is 11027c478bd9Sstevel@tonic-gate * expanded. 11037c478bd9Sstevel@tonic-gate */ 11047c478bd9Sstevel@tonic-gate if (moved) 11057c478bd9Sstevel@tonic-gate value -= *addr; 11067c478bd9Sstevel@tonic-gate 1107cce0e03bSab /* 1108cce0e03bSab * If we have a replacement value for the relocation 1109cce0e03bSab * target, put it in place now. 1110cce0e03bSab */ 1111cce0e03bSab if (arsp->rel_flags & FLG_REL_NADDEND) { 1112cce0e03bSab Xword addend = arsp->rel_raddend; 1113cce0e03bSab 1114cce0e03bSab if (ld_reloc_targval_set(ofl, arsp, 1115cce0e03bSab addr, addend) == 0) 1116cce0e03bSab return (S_ERROR); 1117cce0e03bSab } 1118cce0e03bSab 11197c478bd9Sstevel@tonic-gate /* 1120f3324781Sab * If '-z noreloc' is specified - skip the do_reloc_ld 11217c478bd9Sstevel@tonic-gate * stage. 11227c478bd9Sstevel@tonic-gate */ 1123f3324781Sab if (OFL_DO_RELOC(ofl)) { 1124f3324781Sab if (do_reloc_ld((uchar_t)arsp->rel_rtype, addr, 11255aefb655Srie &value, arsp->rel_sname, ifl_name, 1126f3324781Sab OFL_SWAP_RELOC_DATA(ofl, arsp), 11275aefb655Srie ofl->ofl_lml) == 0) 11287c478bd9Sstevel@tonic-gate return_code = S_ERROR; 11297c478bd9Sstevel@tonic-gate } 11307c478bd9Sstevel@tonic-gate } 11317c478bd9Sstevel@tonic-gate } 11327c478bd9Sstevel@tonic-gate return (return_code); 11337c478bd9Sstevel@tonic-gate } 11347c478bd9Sstevel@tonic-gate 1135141040e8Srie /* 1136141040e8Srie * Add an output relocation record. 1137141040e8Srie */ 1138ba2be530Sab static uintptr_t 11395aefb655Srie ld_add_outrel(Word flags, Rel_desc *rsp, Ofl_desc *ofl) 11407c478bd9Sstevel@tonic-gate { 1141141040e8Srie Rel_desc *orsp; 1142141040e8Srie Rel_cache *rcp; 1143141040e8Srie Sym_desc *sdp = rsp->rel_sym; 1144*57ef7aa9SRod Evans static size_t nextsize = 0; 11457c478bd9Sstevel@tonic-gate 11467c478bd9Sstevel@tonic-gate /* 11477c478bd9Sstevel@tonic-gate * Static executables *do not* want any relocations against them. 11487c478bd9Sstevel@tonic-gate * Since our engine still creates relocations against a WEAK UNDEFINED 11497c478bd9Sstevel@tonic-gate * symbol in a static executable, it's best to disable them here 11507c478bd9Sstevel@tonic-gate * instead of through out the relocation code. 11517c478bd9Sstevel@tonic-gate */ 11527c478bd9Sstevel@tonic-gate if ((ofl->ofl_flags & (FLG_OF_STATIC | FLG_OF_EXEC)) == 11537c478bd9Sstevel@tonic-gate (FLG_OF_STATIC | FLG_OF_EXEC)) 11547c478bd9Sstevel@tonic-gate return (1); 11557c478bd9Sstevel@tonic-gate 11567c478bd9Sstevel@tonic-gate /* 1157*57ef7aa9SRod Evans * Obtain the new available relocation cache entry. 11587c478bd9Sstevel@tonic-gate */ 1159*57ef7aa9SRod Evans if ((rcp = ld_add_rel_cache(ofl, &ofl->ofl_outrels, &nextsize, 1160*57ef7aa9SRod Evans REL_LOIDESCNO, REL_HOIDESCNO)) == (Rel_cache *)S_ERROR) 1161*57ef7aa9SRod Evans return (S_ERROR); 11627c478bd9Sstevel@tonic-gate 1163*57ef7aa9SRod Evans orsp = rcp->rc_free; 11647c478bd9Sstevel@tonic-gate 11657c478bd9Sstevel@tonic-gate /* 11667c478bd9Sstevel@tonic-gate * If we are adding a output relocation against a section 11677c478bd9Sstevel@tonic-gate * symbol (non-RELATIVE) then mark that section. These sections 11687c478bd9Sstevel@tonic-gate * will be added to the .dynsym symbol table. 11697c478bd9Sstevel@tonic-gate */ 11707c478bd9Sstevel@tonic-gate if (sdp && (rsp->rel_rtype != M_R_RELATIVE) && 11717c478bd9Sstevel@tonic-gate ((flags & FLG_REL_SCNNDX) || 11727c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION))) { 11737c478bd9Sstevel@tonic-gate 11747c478bd9Sstevel@tonic-gate /* 11757c478bd9Sstevel@tonic-gate * If this is a COMMON symbol - no output section 11767c478bd9Sstevel@tonic-gate * exists yet - (it's created as part of sym_validate()). 11777c478bd9Sstevel@tonic-gate * So - we mark here that when it's created it should 11787c478bd9Sstevel@tonic-gate * be tagged with the FLG_OS_OUTREL flag. 11797c478bd9Sstevel@tonic-gate */ 11807c478bd9Sstevel@tonic-gate if ((sdp->sd_flags & FLG_SY_SPECSEC) && 11810bc07c75Srie (sdp->sd_sym->st_shndx == SHN_COMMON)) { 11827c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) != STT_TLS) 11837c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_BSSOREL; 11847c478bd9Sstevel@tonic-gate else 11857c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_TLSOREL; 1186141040e8Srie } else { 1187141040e8Srie Os_desc *osp = sdp->sd_isc->is_osdesc; 11887c478bd9Sstevel@tonic-gate 1189c1c6f601Srie if (osp && ((osp->os_flags & FLG_OS_OUTREL) == 0)) { 11907c478bd9Sstevel@tonic-gate ofl->ofl_dynshdrcnt++; 11917c478bd9Sstevel@tonic-gate osp->os_flags |= FLG_OS_OUTREL; 11927c478bd9Sstevel@tonic-gate } 11937c478bd9Sstevel@tonic-gate } 11947c478bd9Sstevel@tonic-gate } 11957c478bd9Sstevel@tonic-gate 11967c478bd9Sstevel@tonic-gate *orsp = *rsp; 11977c478bd9Sstevel@tonic-gate orsp->rel_flags |= flags; 11987c478bd9Sstevel@tonic-gate 11997c478bd9Sstevel@tonic-gate rcp->rc_free++; 12007c478bd9Sstevel@tonic-gate ofl->ofl_outrelscnt++; 12017c478bd9Sstevel@tonic-gate 12027c478bd9Sstevel@tonic-gate if (flags & FLG_REL_GOT) 12037c478bd9Sstevel@tonic-gate ofl->ofl_relocgotsz += (Xword)sizeof (Rel); 12047c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_PLT) 12057c478bd9Sstevel@tonic-gate ofl->ofl_relocpltsz += (Xword)sizeof (Rel); 12067c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_BSS) 12077c478bd9Sstevel@tonic-gate ofl->ofl_relocbsssz += (Xword)sizeof (Rel); 12087c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_NOINFO) 12097c478bd9Sstevel@tonic-gate ofl->ofl_relocrelsz += (Xword)sizeof (Rel); 12107c478bd9Sstevel@tonic-gate else 12117c478bd9Sstevel@tonic-gate orsp->rel_osdesc->os_szoutrels += (Xword)sizeof (Rel); 12127c478bd9Sstevel@tonic-gate 12137c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == M_R_RELATIVE) 12147c478bd9Sstevel@tonic-gate ofl->ofl_relocrelcnt++; 12157c478bd9Sstevel@tonic-gate 12167c478bd9Sstevel@tonic-gate /* 12177c478bd9Sstevel@tonic-gate * We don't perform sorting on PLT relocations because 12187c478bd9Sstevel@tonic-gate * they have already been assigned a PLT index and if we 12197c478bd9Sstevel@tonic-gate * were to sort them we would have to re-assign the plt indexes. 12207c478bd9Sstevel@tonic-gate */ 12217c478bd9Sstevel@tonic-gate if (!(flags & FLG_REL_PLT)) 12227c478bd9Sstevel@tonic-gate ofl->ofl_reloccnt++; 12237c478bd9Sstevel@tonic-gate 12247c478bd9Sstevel@tonic-gate /* 1225141040e8Srie * Insure a GLOBAL_OFFSET_TABLE is generated if required. 12267c478bd9Sstevel@tonic-gate */ 1227141040e8Srie if (IS_GOT_REQUIRED(orsp->rel_rtype)) 12287c478bd9Sstevel@tonic-gate ofl->ofl_flags |= FLG_OF_BLDGOT; 12297c478bd9Sstevel@tonic-gate 12307c478bd9Sstevel@tonic-gate /* 12317c478bd9Sstevel@tonic-gate * Identify and possibly warn of a displacement relocation. 12327c478bd9Sstevel@tonic-gate */ 12337c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_DISP) { 12347c478bd9Sstevel@tonic-gate ofl->ofl_dtflags_1 |= DF_1_DISPRELPND; 12357c478bd9Sstevel@tonic-gate 12367c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_VERBOSE) 12375aefb655Srie ld_disp_errmsg(MSG_INTL(MSG_REL_DISPREL4), orsp, ofl); 12387c478bd9Sstevel@tonic-gate } 12395aefb655Srie DBG_CALL(Dbg_reloc_ors_entry(ofl->ofl_lml, ELF_DBG_LD, SHT_REL, 12405aefb655Srie M_MACH, orsp)); 12417c478bd9Sstevel@tonic-gate return (1); 12427c478bd9Sstevel@tonic-gate } 12437c478bd9Sstevel@tonic-gate 12447c478bd9Sstevel@tonic-gate /* 12457c478bd9Sstevel@tonic-gate * process relocation for a LOCAL symbol 12467c478bd9Sstevel@tonic-gate */ 1247ba2be530Sab static uintptr_t 12485aefb655Srie ld_reloc_local(Rel_desc * rsp, Ofl_desc * ofl) 12497c478bd9Sstevel@tonic-gate { 12501d9df23bSab ofl_flag_t flags = ofl->ofl_flags; 12517c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 12520bc07c75Srie Word shndx = sdp->sd_sym->st_shndx; 12537c478bd9Sstevel@tonic-gate 12547c478bd9Sstevel@tonic-gate /* 12557c478bd9Sstevel@tonic-gate * if ((shared object) and (not pc relative relocation) and 12567c478bd9Sstevel@tonic-gate * (not against ABS symbol)) 12577c478bd9Sstevel@tonic-gate * then 12587c478bd9Sstevel@tonic-gate * build R_386_RELATIVE 12597c478bd9Sstevel@tonic-gate * fi 12607c478bd9Sstevel@tonic-gate */ 12617c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_SHAROBJ) && (rsp->rel_flags & FLG_REL_LOAD) && 12622926dd2eSrie !(IS_PC_RELATIVE(rsp->rel_rtype)) && !(IS_SIZE(rsp->rel_rtype)) && 12637c478bd9Sstevel@tonic-gate !(IS_GOT_BASED(rsp->rel_rtype)) && 12647c478bd9Sstevel@tonic-gate !(rsp->rel_isdesc != NULL && 12657c478bd9Sstevel@tonic-gate (rsp->rel_isdesc->is_shdr->sh_type == SHT_SUNW_dof)) && 12667c478bd9Sstevel@tonic-gate (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) || 12677c478bd9Sstevel@tonic-gate (shndx != SHN_ABS) || (sdp->sd_aux && sdp->sd_aux->sa_symspec))) { 12687c478bd9Sstevel@tonic-gate Word ortype = rsp->rel_rtype; 12697c478bd9Sstevel@tonic-gate 12707c478bd9Sstevel@tonic-gate rsp->rel_rtype = R_386_RELATIVE; 12715aefb655Srie if (ld_add_outrel(NULL, rsp, ofl) == S_ERROR) 12727c478bd9Sstevel@tonic-gate return (S_ERROR); 12737c478bd9Sstevel@tonic-gate rsp->rel_rtype = ortype; 12747c478bd9Sstevel@tonic-gate } 12757c478bd9Sstevel@tonic-gate 12767c478bd9Sstevel@tonic-gate /* 12777c478bd9Sstevel@tonic-gate * If the relocation is against a 'non-allocatable' section 12787c478bd9Sstevel@tonic-gate * and we can not resolve it now - then give a warning 12797c478bd9Sstevel@tonic-gate * message. 12807c478bd9Sstevel@tonic-gate * 12817c478bd9Sstevel@tonic-gate * We can not resolve the symbol if either: 12827c478bd9Sstevel@tonic-gate * a) it's undefined 12837c478bd9Sstevel@tonic-gate * b) it's defined in a shared library and a 12847c478bd9Sstevel@tonic-gate * COPY relocation hasn't moved it to the executable 12857c478bd9Sstevel@tonic-gate * 12867c478bd9Sstevel@tonic-gate * Note: because we process all of the relocations against the 12877c478bd9Sstevel@tonic-gate * text segment before any others - we know whether 12887c478bd9Sstevel@tonic-gate * or not a copy relocation will be generated before 12897c478bd9Sstevel@tonic-gate * we get here (see reloc_init()->reloc_segments()). 12907c478bd9Sstevel@tonic-gate */ 12917c478bd9Sstevel@tonic-gate if (!(rsp->rel_flags & FLG_REL_LOAD) && 12927c478bd9Sstevel@tonic-gate ((shndx == SHN_UNDEF) || 12937c478bd9Sstevel@tonic-gate ((sdp->sd_ref == REF_DYN_NEED) && 12947c478bd9Sstevel@tonic-gate ((sdp->sd_flags & FLG_SY_MVTOCOMM) == 0)))) { 1295de777a60Sab Conv_inv_buf_t inv_buf; 1296de777a60Sab 12977c478bd9Sstevel@tonic-gate /* 12987c478bd9Sstevel@tonic-gate * If the relocation is against a SHT_SUNW_ANNOTATE 12997c478bd9Sstevel@tonic-gate * section - then silently ignore that the relocation 13007c478bd9Sstevel@tonic-gate * can not be resolved. 13017c478bd9Sstevel@tonic-gate */ 13027c478bd9Sstevel@tonic-gate if (rsp->rel_osdesc && 13037c478bd9Sstevel@tonic-gate (rsp->rel_osdesc->os_shdr->sh_type == SHT_SUNW_ANNOTATE)) 13047c478bd9Sstevel@tonic-gate return (0); 13055aefb655Srie eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_REL_EXTERNSYM), 1306de777a60Sab conv_reloc_386_type(rsp->rel_rtype, 0, &inv_buf), 13077c478bd9Sstevel@tonic-gate rsp->rel_isdesc->is_file->ifl_name, 13087c478bd9Sstevel@tonic-gate demangle(rsp->rel_sname), rsp->rel_osdesc->os_name); 13097c478bd9Sstevel@tonic-gate return (1); 13107c478bd9Sstevel@tonic-gate } 13117c478bd9Sstevel@tonic-gate 13127c478bd9Sstevel@tonic-gate /* 13137c478bd9Sstevel@tonic-gate * Perform relocation. 13147c478bd9Sstevel@tonic-gate */ 13155aefb655Srie return (ld_add_actrel(NULL, rsp, ofl)); 13167c478bd9Sstevel@tonic-gate } 13177c478bd9Sstevel@tonic-gate 1318ba2be530Sab static uintptr_t 13195aefb655Srie ld_reloc_TLS(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 13207c478bd9Sstevel@tonic-gate { 13217c478bd9Sstevel@tonic-gate Word rtype = rsp->rel_rtype; 13227c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 13231d9df23bSab ofl_flag_t flags = ofl->ofl_flags; 13247c478bd9Sstevel@tonic-gate Gotndx *gnp; 13257c478bd9Sstevel@tonic-gate 13267c478bd9Sstevel@tonic-gate /* 1327d326b23bSrie * If we're building an executable - use either the IE or LE access 1328d326b23bSrie * model. If we're building a shared object process any IE model. 13297c478bd9Sstevel@tonic-gate */ 1330d326b23bSrie if ((flags & FLG_OF_EXEC) || (IS_TLS_IE(rtype))) { 13317c478bd9Sstevel@tonic-gate /* 1332d326b23bSrie * Set the DF_STATIC_TLS flag. 13337c478bd9Sstevel@tonic-gate */ 13347c478bd9Sstevel@tonic-gate ofl->ofl_dtflags |= DF_STATIC_TLS; 13357c478bd9Sstevel@tonic-gate 1336d326b23bSrie if (!local || ((flags & FLG_OF_EXEC) == 0)) { 13377c478bd9Sstevel@tonic-gate /* 1338d326b23bSrie * Assign a GOT entry for static TLS references. 13397c478bd9Sstevel@tonic-gate */ 1340*57ef7aa9SRod Evans if ((gnp = ld_find_got_ndx(sdp->sd_GOTndxs, 1341*57ef7aa9SRod Evans GOT_REF_TLSIE, ofl, NULL)) == NULL) { 13427c478bd9Sstevel@tonic-gate 1343d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, 1344d326b23bSrie gnp, GOT_REF_TLSIE, FLG_REL_STLS, 1345*57ef7aa9SRod Evans rtype, R_386_TLS_TPOFF, NULL) == S_ERROR) 1346d326b23bSrie return (S_ERROR); 1347d326b23bSrie } 13487c478bd9Sstevel@tonic-gate 13497c478bd9Sstevel@tonic-gate /* 1350d326b23bSrie * IE access model. 13517c478bd9Sstevel@tonic-gate */ 1352d326b23bSrie if (IS_TLS_IE(rtype)) { 1353d326b23bSrie if (ld_add_actrel(FLG_REL_STLS, 13547c478bd9Sstevel@tonic-gate rsp, ofl) == S_ERROR) 13557c478bd9Sstevel@tonic-gate return (S_ERROR); 1356d326b23bSrie 1357d326b23bSrie /* 1358d326b23bSrie * A non-pic shared object needs to adjust the 1359d326b23bSrie * active relocation (indntpoff). 1360d326b23bSrie */ 1361d326b23bSrie if (((flags & FLG_OF_EXEC) == 0) && 1362d326b23bSrie (rtype == R_386_TLS_IE)) { 1363d326b23bSrie rsp->rel_rtype = R_386_RELATIVE; 1364d326b23bSrie return (ld_add_outrel(NULL, rsp, ofl)); 1365d326b23bSrie } 1366d326b23bSrie return (1); 13677c478bd9Sstevel@tonic-gate } 13687c478bd9Sstevel@tonic-gate 13697c478bd9Sstevel@tonic-gate /* 1370d326b23bSrie * Fixups are required for other executable models. 13717c478bd9Sstevel@tonic-gate */ 13725aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 13737c478bd9Sstevel@tonic-gate rsp, ofl)); 13747c478bd9Sstevel@tonic-gate } 1375d326b23bSrie 13767c478bd9Sstevel@tonic-gate /* 1377d326b23bSrie * LE access model. 13787c478bd9Sstevel@tonic-gate */ 13797c478bd9Sstevel@tonic-gate if (IS_TLS_LE(rtype) || (rtype == R_386_TLS_LDO_32)) 13805aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 13817c478bd9Sstevel@tonic-gate 13825aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 13835aefb655Srie rsp, ofl)); 13847c478bd9Sstevel@tonic-gate } 13857c478bd9Sstevel@tonic-gate 13867c478bd9Sstevel@tonic-gate /* 1387d326b23bSrie * Building a shared object. 1388d326b23bSrie * 1389d326b23bSrie * Assign a GOT entry for a dynamic TLS reference. 13907c478bd9Sstevel@tonic-gate */ 1391*57ef7aa9SRod Evans if (IS_TLS_LD(rtype) && ((gnp = ld_find_got_ndx(sdp->sd_GOTndxs, 1392*57ef7aa9SRod Evans GOT_REF_TLSLD, ofl, NULL)) == NULL)) { 1393d326b23bSrie 1394d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSLD, 1395*57ef7aa9SRod Evans FLG_REL_MTLS, rtype, R_386_TLS_DTPMOD32, NULL) == S_ERROR) 13967c478bd9Sstevel@tonic-gate return (S_ERROR); 1397d326b23bSrie 1398*57ef7aa9SRod Evans } else if (IS_TLS_GD(rtype) && ((gnp = ld_find_got_ndx(sdp->sd_GOTndxs, 1399*57ef7aa9SRod Evans GOT_REF_TLSGD, ofl, NULL)) == NULL)) { 1400d326b23bSrie 1401d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSGD, 1402d326b23bSrie FLG_REL_DTLS, rtype, R_386_TLS_DTPMOD32, 1403d326b23bSrie R_386_TLS_DTPOFF32) == S_ERROR) 14047c478bd9Sstevel@tonic-gate return (S_ERROR); 14057c478bd9Sstevel@tonic-gate } 1406d326b23bSrie 14077c478bd9Sstevel@tonic-gate /* 14087c478bd9Sstevel@tonic-gate * For GD/LD TLS reference - TLS_{GD,LD}_CALL, this will eventually 1409d326b23bSrie * cause a call to __tls_get_addr(). Convert this relocation to that 1410d326b23bSrie * symbol now, and prepare for the PLT magic. 14117c478bd9Sstevel@tonic-gate */ 14127c478bd9Sstevel@tonic-gate if ((rtype == R_386_TLS_GD_PLT) || (rtype == R_386_TLS_LDM_PLT)) { 1413f5a18a30Srie Sym_desc *tlsgetsym; 14147c478bd9Sstevel@tonic-gate 14155aefb655Srie if ((tlsgetsym = ld_sym_add_u(MSG_ORIG(MSG_SYM_TLSGETADDR_UU), 1416f5a18a30Srie ofl, MSG_STR_TLSREL)) == (Sym_desc *)S_ERROR) 14177c478bd9Sstevel@tonic-gate return (S_ERROR); 1418d326b23bSrie 14197c478bd9Sstevel@tonic-gate rsp->rel_sym = tlsgetsym; 14207c478bd9Sstevel@tonic-gate rsp->rel_sname = tlsgetsym->sd_name; 14217c478bd9Sstevel@tonic-gate rsp->rel_rtype = R_386_PLT32; 1422d326b23bSrie 14235aefb655Srie if (ld_reloc_plt(rsp, ofl) == S_ERROR) 14247c478bd9Sstevel@tonic-gate return (S_ERROR); 1425d326b23bSrie 14267c478bd9Sstevel@tonic-gate rsp->rel_sym = sdp; 14277c478bd9Sstevel@tonic-gate rsp->rel_sname = sdp->sd_name; 14287c478bd9Sstevel@tonic-gate rsp->rel_rtype = rtype; 14297c478bd9Sstevel@tonic-gate return (1); 14307c478bd9Sstevel@tonic-gate } 14317c478bd9Sstevel@tonic-gate 14327c478bd9Sstevel@tonic-gate if (IS_TLS_LD(rtype)) 14335aefb655Srie return (ld_add_actrel(FLG_REL_MTLS, rsp, ofl)); 14347c478bd9Sstevel@tonic-gate 14355aefb655Srie return (ld_add_actrel(FLG_REL_DTLS, rsp, ofl)); 14367c478bd9Sstevel@tonic-gate } 14377c478bd9Sstevel@tonic-gate 14387c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 1439ba2be530Sab static uintptr_t 1440*57ef7aa9SRod Evans ld_assign_got_ndx(Alist **alpp, Gotndx *pgnp, Gotref gref, Ofl_desc *ofl, 1441*57ef7aa9SRod Evans Rel_desc *rsp, Sym_desc *sdp) 14427c478bd9Sstevel@tonic-gate { 1443*57ef7aa9SRod Evans Gotndx gn, *gnp; 14447c478bd9Sstevel@tonic-gate uint_t gotents; 14457c478bd9Sstevel@tonic-gate 14467c478bd9Sstevel@tonic-gate if (pgnp) 14477c478bd9Sstevel@tonic-gate return (1); 14487c478bd9Sstevel@tonic-gate 14497c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSGD) || (gref == GOT_REF_TLSLD)) 14507c478bd9Sstevel@tonic-gate gotents = 2; 14517c478bd9Sstevel@tonic-gate else 14527c478bd9Sstevel@tonic-gate gotents = 1; 14537c478bd9Sstevel@tonic-gate 1454*57ef7aa9SRod Evans gn.gn_addend = 0; 1455*57ef7aa9SRod Evans gn.gn_gotndx = ofl->ofl_gotcnt; 1456*57ef7aa9SRod Evans gn.gn_gotref = gref; 14577c478bd9Sstevel@tonic-gate 14587c478bd9Sstevel@tonic-gate ofl->ofl_gotcnt += gotents; 14597c478bd9Sstevel@tonic-gate 14607c478bd9Sstevel@tonic-gate if (gref == GOT_REF_TLSLD) { 1461*57ef7aa9SRod Evans if (ofl->ofl_tlsldgotndx == NULL) { 1462*57ef7aa9SRod Evans if ((gnp = libld_malloc(sizeof (Gotndx))) == NULL) 1463*57ef7aa9SRod Evans return (S_ERROR); 1464*57ef7aa9SRod Evans (void) memcpy(gnp, &gn, sizeof (Gotndx)); 1465*57ef7aa9SRod Evans ofl->ofl_tlsldgotndx = gnp; 1466*57ef7aa9SRod Evans } 14677c478bd9Sstevel@tonic-gate return (1); 14687c478bd9Sstevel@tonic-gate } 14697c478bd9Sstevel@tonic-gate 1470*57ef7aa9SRod Evans /* 1471*57ef7aa9SRod Evans * GOT indexes are maintained on an Alist, where there is typically 1472*57ef7aa9SRod Evans * only one index. The usage of this list is to scan the list to find 1473*57ef7aa9SRod Evans * an index, and then apply that index immediately to a relocation. 1474*57ef7aa9SRod Evans * Thus there are no external references to these GOT index structures 1475*57ef7aa9SRod Evans * that can be compromised by the Alist being reallocated. 1476*57ef7aa9SRod Evans */ 1477*57ef7aa9SRod Evans if (alist_append(alpp, &gn, sizeof (Gotndx), AL_CNT_SDP_GOT) == NULL) 14787c478bd9Sstevel@tonic-gate return (S_ERROR); 14797c478bd9Sstevel@tonic-gate 14807c478bd9Sstevel@tonic-gate return (1); 14817c478bd9Sstevel@tonic-gate } 14827c478bd9Sstevel@tonic-gate 1483ba2be530Sab static void 14845aefb655Srie ld_assign_plt_ndx(Sym_desc * sdp, Ofl_desc *ofl) 14857c478bd9Sstevel@tonic-gate { 14867c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTndx = 1 + ofl->ofl_pltcnt++; 14877c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx = ofl->ofl_gotcnt++; 1488141040e8Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 14897c478bd9Sstevel@tonic-gate } 14907c478bd9Sstevel@tonic-gate 14917c478bd9Sstevel@tonic-gate /* 14927c478bd9Sstevel@tonic-gate * Initializes .got[0] with the _DYNAMIC symbol value. 14937c478bd9Sstevel@tonic-gate */ 1494ba2be530Sab static uintptr_t 1495d326b23bSrie ld_fillin_gotplt(Ofl_desc *ofl) 14967c478bd9Sstevel@tonic-gate { 14971d9df23bSab ofl_flag_t flags = ofl->ofl_flags; 14981d9df23bSab int bswap = (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) != 0; 1499d326b23bSrie 15007c478bd9Sstevel@tonic-gate if (ofl->ofl_osgot) { 1501d326b23bSrie Sym_desc *sdp; 15027c478bd9Sstevel@tonic-gate 15035aefb655Srie if ((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_DYNAMIC_U), 15047c478bd9Sstevel@tonic-gate SYM_NOHASH, 0, ofl)) != NULL) { 1505d326b23bSrie uchar_t *genptr; 1506d326b23bSrie 1507d326b23bSrie genptr = ((uchar_t *)ofl->ofl_osgot->os_outdata->d_buf + 15087c478bd9Sstevel@tonic-gate (M_GOT_XDYNAMIC * M_GOT_ENTSIZE)); 15097c478bd9Sstevel@tonic-gate /* LINTED */ 15107c478bd9Sstevel@tonic-gate *(Word *)genptr = (Word)sdp->sd_sym->st_value; 1511ba2be530Sab if (bswap) 1512ba2be530Sab /* LINTED */ 1513ba2be530Sab *(Word *)genptr = 1514ba2be530Sab /* LINTED */ 1515ba2be530Sab ld_bswap_Word(*(Word *)genptr); 15167c478bd9Sstevel@tonic-gate } 15177c478bd9Sstevel@tonic-gate } 15187c478bd9Sstevel@tonic-gate 15197c478bd9Sstevel@tonic-gate /* 15207c478bd9Sstevel@tonic-gate * Fill in the reserved slot in the procedure linkage table the first 15217c478bd9Sstevel@tonic-gate * entry is: 15227c478bd9Sstevel@tonic-gate * if (building a.out) { 15237c478bd9Sstevel@tonic-gate * PUSHL got[1] # the address of the link map entry 15247c478bd9Sstevel@tonic-gate * JMP * got[2] # the address of rtbinder 15257c478bd9Sstevel@tonic-gate * } else { 15267c478bd9Sstevel@tonic-gate * PUSHL got[1]@GOT(%ebx) # the address of the link map entry 15277c478bd9Sstevel@tonic-gate * JMP * got[2]@GOT(%ebx) # the address of rtbinder 15287c478bd9Sstevel@tonic-gate * } 15297c478bd9Sstevel@tonic-gate */ 1530d326b23bSrie if ((flags & FLG_OF_DYNAMIC) && ofl->ofl_osplt) { 1531b3fbe5e6Sseizo uchar_t *pltent; 15327c478bd9Sstevel@tonic-gate 1533b3fbe5e6Sseizo pltent = (uchar_t *)ofl->ofl_osplt->os_outdata->d_buf; 1534d326b23bSrie if (!(flags & FLG_OF_SHAROBJ)) { 15357c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 15367c478bd9Sstevel@tonic-gate pltent[1] = M_PUSHL_DISP; 15377c478bd9Sstevel@tonic-gate pltent += 2; 15387c478bd9Sstevel@tonic-gate /* LINTED */ 15397c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(ofl->ofl_osgot->os_shdr-> 1540de777a60Sab sh_addr + M_GOT_XLINKMAP * M_GOT_ENTSIZE); 1541ba2be530Sab if (bswap) 1542ba2be530Sab /* LINTED */ 1543ba2be530Sab *(Word *)pltent = 1544ba2be530Sab /* LINTED */ 1545ba2be530Sab ld_bswap_Word(*(Word *)pltent); 15467c478bd9Sstevel@tonic-gate pltent += 4; 15477c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 15487c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_DISP_IND; 15497c478bd9Sstevel@tonic-gate pltent += 2; 15507c478bd9Sstevel@tonic-gate /* LINTED */ 15517c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(ofl->ofl_osgot->os_shdr-> 1552de777a60Sab sh_addr + M_GOT_XRTLD * M_GOT_ENTSIZE); 1553ba2be530Sab if (bswap) 1554ba2be530Sab /* LINTED */ 1555ba2be530Sab *(Word *)pltent = 1556ba2be530Sab /* LINTED */ 1557ba2be530Sab ld_bswap_Word(*(Word *)pltent); 15587c478bd9Sstevel@tonic-gate } else { 15597c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 15607c478bd9Sstevel@tonic-gate pltent[1] = M_PUSHL_REG_DISP; 15617c478bd9Sstevel@tonic-gate pltent += 2; 15627c478bd9Sstevel@tonic-gate /* LINTED */ 15637c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(M_GOT_XLINKMAP * 1564de777a60Sab M_GOT_ENTSIZE); 1565ba2be530Sab if (bswap) 1566ba2be530Sab /* LINTED */ 1567ba2be530Sab *(Word *)pltent = 1568ba2be530Sab /* LINTED */ 1569ba2be530Sab ld_bswap_Word(*(Word *)pltent); 15707c478bd9Sstevel@tonic-gate pltent += 4; 15717c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 15727c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_REG_DISP_IND; 15737c478bd9Sstevel@tonic-gate pltent += 2; 15747c478bd9Sstevel@tonic-gate /* LINTED */ 15757c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(M_GOT_XRTLD * 1576de777a60Sab M_GOT_ENTSIZE); 1577ba2be530Sab if (bswap) 1578ba2be530Sab /* LINTED */ 1579ba2be530Sab *(Word *)pltent = 1580ba2be530Sab /* LINTED */ 1581ba2be530Sab ld_bswap_Word(*(Word *)pltent); 15827c478bd9Sstevel@tonic-gate } 15837c478bd9Sstevel@tonic-gate } 15847c478bd9Sstevel@tonic-gate return (1); 15857c478bd9Sstevel@tonic-gate } 1586ba2be530Sab 1587ba2be530Sab 1588ba2be530Sab 1589ba2be530Sab /* 1590ba2be530Sab * Template for generating "void (*)(void)" function 1591ba2be530Sab */ 1592ba2be530Sab static const uchar_t nullfunc_tmpl[] = { /* IA32 */ 1593ba2be530Sab /* 0x00 */ 0xc3 /* ret */ 1594ba2be530Sab }; 1595ba2be530Sab 1596ba2be530Sab 1597ba2be530Sab 1598ba2be530Sab /* 1599ba2be530Sab * Return the ld_targ definition for this target. 1600ba2be530Sab */ 1601ba2be530Sab const Target * 1602ba2be530Sab ld_targ_init_x86(void) 1603ba2be530Sab { 1604ba2be530Sab static const Target _ld_targ = { 1605ba2be530Sab { /* Target_mach */ 1606ba2be530Sab M_MACH, /* m_mach */ 1607ba2be530Sab M_MACHPLUS, /* m_machplus */ 1608ba2be530Sab M_FLAGSPLUS, /* m_flagsplus */ 1609ba2be530Sab M_CLASS, /* m_class */ 1610ba2be530Sab M_DATA, /* m_data */ 1611ba2be530Sab 1612ba2be530Sab M_SEGM_ALIGN, /* m_segm_align */ 1613ba2be530Sab M_SEGM_ORIGIN, /* m_segm_origin */ 1614bb3b4f6cSRod Evans M_SEGM_AORIGIN, /* m_segm_aorigin */ 1615ba2be530Sab M_DATASEG_PERM, /* m_dataseg_perm */ 1616ba2be530Sab M_WORD_ALIGN, /* m_word_align */ 1617ba2be530Sab MSG_ORIG(MSG_PTH_RTLD), /* m_def_interp */ 1618ba2be530Sab 1619ba2be530Sab /* Relocation type codes */ 1620ba2be530Sab M_R_ARRAYADDR, /* m_r_arrayaddr */ 1621ba2be530Sab M_R_COPY, /* m_r_copy */ 1622ba2be530Sab M_R_GLOB_DAT, /* m_r_glob_dat */ 1623ba2be530Sab M_R_JMP_SLOT, /* m_r_jmp_slot */ 1624ba2be530Sab M_R_NUM, /* m_r_num */ 1625ba2be530Sab M_R_NONE, /* m_r_none */ 1626ba2be530Sab M_R_RELATIVE, /* m_r_relative */ 1627ba2be530Sab M_R_REGISTER, /* m_r_register */ 1628ba2be530Sab 1629ba2be530Sab /* Relocation related constants */ 1630ba2be530Sab M_REL_DT_COUNT, /* m_rel_dt_count */ 1631ba2be530Sab M_REL_DT_ENT, /* m_rel_dt_ent */ 1632ba2be530Sab M_REL_DT_SIZE, /* m_rel_dt_size */ 1633ba2be530Sab M_REL_DT_TYPE, /* m_rel_dt_type */ 1634ba2be530Sab M_REL_SHT_TYPE, /* m_rel_sht_type */ 1635ba2be530Sab 1636ba2be530Sab /* GOT related constants */ 1637ba2be530Sab M_GOT_ENTSIZE, /* m_got_entsize */ 1638ba2be530Sab M_GOT_XNumber, /* m_got_xnumber */ 1639ba2be530Sab 1640ba2be530Sab /* PLT related constants */ 1641ba2be530Sab M_PLT_ALIGN, /* m_plt_align */ 1642ba2be530Sab M_PLT_ENTSIZE, /* m_plt_entsize */ 1643ba2be530Sab M_PLT_RESERVSZ, /* m_plt_reservsz */ 1644ba2be530Sab M_PLT_SHF_FLAGS, /* m_plt_shf_flags */ 1645ba2be530Sab 16467e16fca0SAli Bahrami /* Section type of .eh_frame/.eh_frame_hdr sections */ 16477e16fca0SAli Bahrami SHT_PROGBITS, /* m_sht_unwind */ 16487e16fca0SAli Bahrami 1649ba2be530Sab M_DT_REGISTER, /* m_dt_register */ 1650ba2be530Sab }, 1651ba2be530Sab { /* Target_machid */ 1652ba2be530Sab M_ID_ARRAY, /* id_array */ 1653ba2be530Sab M_ID_BSS, /* id_bss */ 1654ba2be530Sab M_ID_CAP, /* id_cap */ 1655ba2be530Sab M_ID_DATA, /* id_data */ 1656ba2be530Sab M_ID_DYNAMIC, /* id_dynamic */ 1657ba2be530Sab M_ID_DYNSORT, /* id_dynsort */ 1658ba2be530Sab M_ID_DYNSTR, /* id_dynstr */ 1659ba2be530Sab M_ID_DYNSYM, /* id_dynsym */ 1660ba2be530Sab M_ID_DYNSYM_NDX, /* id_dynsym_ndx */ 1661ba2be530Sab M_ID_GOT, /* id_got */ 1662ba2be530Sab M_ID_UNKNOWN, /* id_gotdata (unused) */ 1663ba2be530Sab M_ID_HASH, /* id_hash */ 1664ba2be530Sab M_ID_INTERP, /* id_interp */ 1665ba2be530Sab M_ID_LBSS, /* id_lbss */ 1666ba2be530Sab M_ID_LDYNSYM, /* id_ldynsym */ 1667ba2be530Sab M_ID_NOTE, /* id_note */ 1668ba2be530Sab M_ID_NULL, /* id_null */ 1669ba2be530Sab M_ID_PLT, /* id_plt */ 1670ba2be530Sab M_ID_REL, /* id_rel */ 1671ba2be530Sab M_ID_STRTAB, /* id_strtab */ 1672ba2be530Sab M_ID_SYMINFO, /* id_syminfo */ 1673ba2be530Sab M_ID_SYMTAB, /* id_symtab */ 1674ba2be530Sab M_ID_SYMTAB_NDX, /* id_symtab_ndx */ 1675ba2be530Sab M_ID_TEXT, /* id_text */ 1676ba2be530Sab M_ID_TLS, /* id_tls */ 1677ba2be530Sab M_ID_TLSBSS, /* id_tlsbss */ 1678ba2be530Sab M_ID_UNKNOWN, /* id_unknown */ 1679ba2be530Sab M_ID_UNWIND, /* id_unwind */ 16807e16fca0SAli Bahrami M_ID_UNWINDHDR, /* id_unwindhdr */ 1681ba2be530Sab M_ID_USER, /* id_user */ 1682ba2be530Sab M_ID_VERSION, /* id_version */ 1683ba2be530Sab }, 1684ba2be530Sab { /* Target_nullfunc */ 1685ba2be530Sab nullfunc_tmpl, /* nf_template */ 1686ba2be530Sab sizeof (nullfunc_tmpl), /* nf_size */ 1687ba2be530Sab }, 1688ba2be530Sab { /* Target_machrel */ 1689ba2be530Sab reloc_table, 1690ba2be530Sab 1691ba2be530Sab ld_init_rel, /* mr_init_rel */ 1692ba2be530Sab ld_mach_eflags, /* mr_mach_eflags */ 1693ba2be530Sab ld_mach_make_dynamic, /* mr_mach_make_dynamic */ 1694ba2be530Sab ld_mach_update_odynamic, /* mr_mach_update_odynamic */ 1695ba2be530Sab ld_calc_plt_addr, /* mr_calc_plt_addr */ 1696ba2be530Sab ld_perform_outreloc, /* mr_perform_outreloc */ 1697ba2be530Sab ld_do_activerelocs, /* mr_do_activerelocs */ 1698ba2be530Sab ld_add_outrel, /* mr_add_outrel */ 1699ba2be530Sab NULL, /* mr_reloc_register */ 1700ba2be530Sab ld_reloc_local, /* mr_reloc_local */ 1701ba2be530Sab NULL, /* mr_reloc_GOTOP */ 1702ba2be530Sab ld_reloc_TLS, /* mr_reloc_TLS */ 1703ba2be530Sab NULL, /* mr_assign_got */ 1704*57ef7aa9SRod Evans ld_find_got_ndx, /* mr_find_got_ndx */ 1705ba2be530Sab ld_calc_got_offset, /* mr_calc_got_offset */ 1706ba2be530Sab ld_assign_got_ndx, /* mr_assign_got_ndx */ 1707ba2be530Sab ld_assign_plt_ndx, /* mr_assign_plt_ndx */ 1708ba2be530Sab NULL, /* mr_allocate_got */ 1709ba2be530Sab ld_fillin_gotplt, /* mr_fillin_gotplt */ 1710ba2be530Sab }, 1711ba2be530Sab { /* Target_machsym */ 1712ba2be530Sab NULL, /* ms_reg_check */ 1713ba2be530Sab NULL, /* ms_mach_sym_typecheck */ 1714ba2be530Sab NULL, /* ms_is_regsym */ 1715ba2be530Sab NULL, /* ms_reg_find */ 1716ba2be530Sab NULL /* ms_reg_enter */ 1717ba2be530Sab } 1718ba2be530Sab }; 1719ba2be530Sab 1720ba2be530Sab return (&_ld_targ); 1721ba2be530Sab } 1722