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 * 27141040e8Srie * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 287c478bd9Sstevel@tonic-gate * Use is subject to license terms. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate #include <string.h> 337c478bd9Sstevel@tonic-gate #include <stdio.h> 347c478bd9Sstevel@tonic-gate #include <sys/elf_386.h> 355aefb655Srie #include <debug.h> 365aefb655Srie #include <reloc.h> 377c478bd9Sstevel@tonic-gate #include "msg.h" 387c478bd9Sstevel@tonic-gate #include "_libld.h" 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate Word 415aefb655Srie ld_init_rel(Rel_desc *reld, void *reloc) 427c478bd9Sstevel@tonic-gate { 437c478bd9Sstevel@tonic-gate Rel * rel = (Rel *)reloc; 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate /* LINTED */ 467c478bd9Sstevel@tonic-gate reld->rel_rtype = (Word)ELF_R_TYPE(rel->r_info); 477c478bd9Sstevel@tonic-gate reld->rel_roffset = rel->r_offset; 487c478bd9Sstevel@tonic-gate reld->rel_raddend = 0; 497c478bd9Sstevel@tonic-gate reld->rel_typedata = 0; 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate return ((Word)ELF_R_SYM(rel->r_info)); 527c478bd9Sstevel@tonic-gate } 537c478bd9Sstevel@tonic-gate 547c478bd9Sstevel@tonic-gate void 555aefb655Srie ld_mach_eflags(Ehdr *ehdr, Ofl_desc *ofl) 567c478bd9Sstevel@tonic-gate { 575aefb655Srie ofl->ofl_dehdr->e_flags |= ehdr->e_flags; 587c478bd9Sstevel@tonic-gate } 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate void 615aefb655Srie ld_mach_make_dynamic(Ofl_desc *ofl, size_t *cnt) 627c478bd9Sstevel@tonic-gate { 637c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) { 647c478bd9Sstevel@tonic-gate /* 657c478bd9Sstevel@tonic-gate * Create this entry if we are going to create a PLT table. 667c478bd9Sstevel@tonic-gate */ 677c478bd9Sstevel@tonic-gate if (ofl->ofl_pltcnt) 687c478bd9Sstevel@tonic-gate (*cnt)++; /* DT_PLTGOT */ 697c478bd9Sstevel@tonic-gate } 707c478bd9Sstevel@tonic-gate } 717c478bd9Sstevel@tonic-gate 727c478bd9Sstevel@tonic-gate void 73d326b23bSrie ld_mach_update_odynamic(Ofl_desc *ofl, Dyn **dyn) 747c478bd9Sstevel@tonic-gate { 755aefb655Srie if (((ofl->ofl_flags & FLG_OF_RELOBJ) == 0) && ofl->ofl_pltcnt) { 765aefb655Srie (*dyn)->d_tag = DT_PLTGOT; 775aefb655Srie if (ofl->ofl_osgot) 785aefb655Srie (*dyn)->d_un.d_ptr = ofl->ofl_osgot->os_shdr->sh_addr; 795aefb655Srie else 805aefb655Srie (*dyn)->d_un.d_ptr = 0; 815aefb655Srie (*dyn)++; 827c478bd9Sstevel@tonic-gate } 837c478bd9Sstevel@tonic-gate } 847c478bd9Sstevel@tonic-gate 857c478bd9Sstevel@tonic-gate Xword 865aefb655Srie ld_calc_plt_addr(Sym_desc *sdp, Ofl_desc *ofl) 877c478bd9Sstevel@tonic-gate { 887c478bd9Sstevel@tonic-gate Xword value; 897c478bd9Sstevel@tonic-gate 907c478bd9Sstevel@tonic-gate value = (Xword)(ofl->ofl_osplt->os_shdr->sh_addr) + 917c478bd9Sstevel@tonic-gate M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * M_PLT_ENTSIZE); 927c478bd9Sstevel@tonic-gate return (value); 937c478bd9Sstevel@tonic-gate } 947c478bd9Sstevel@tonic-gate 957c478bd9Sstevel@tonic-gate /* 967c478bd9Sstevel@tonic-gate * Build a single plt entry - code is: 977c478bd9Sstevel@tonic-gate * if (building a.out) 987c478bd9Sstevel@tonic-gate * JMP *got_off 997c478bd9Sstevel@tonic-gate * else 1007c478bd9Sstevel@tonic-gate * JMP *got_off@GOT(%ebx) 1017c478bd9Sstevel@tonic-gate * PUSHL &rel_off 1027c478bd9Sstevel@tonic-gate * JMP -n(%pc) # -n is pcrel offset to first plt entry 1037c478bd9Sstevel@tonic-gate * 1047c478bd9Sstevel@tonic-gate * The got_off@GOT entry gets filled with the address of the PUSHL, 1057c478bd9Sstevel@tonic-gate * so the first pass through the plt jumps back here, jumping 1067c478bd9Sstevel@tonic-gate * in turn to the first plt entry, which jumps to the dynamic 1077c478bd9Sstevel@tonic-gate * linker. The dynamic linker then patches the GOT, rerouting 1087c478bd9Sstevel@tonic-gate * future plt calls to the proper destination. 1097c478bd9Sstevel@tonic-gate */ 1107c478bd9Sstevel@tonic-gate static void 1117c478bd9Sstevel@tonic-gate plt_entry(Ofl_desc * ofl, Word rel_off, Sym_desc * sdp) 1127c478bd9Sstevel@tonic-gate { 113b3fbe5e6Sseizo uchar_t *pltent, *gotent; 1147c478bd9Sstevel@tonic-gate Sword plt_off; 1157c478bd9Sstevel@tonic-gate Word got_off; 1167c478bd9Sstevel@tonic-gate 1177c478bd9Sstevel@tonic-gate got_off = sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 1187c478bd9Sstevel@tonic-gate plt_off = M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * 1197c478bd9Sstevel@tonic-gate M_PLT_ENTSIZE); 120b3fbe5e6Sseizo pltent = (uchar_t *)(ofl->ofl_osplt->os_outdata->d_buf) + plt_off; 121b3fbe5e6Sseizo gotent = (uchar_t *)(ofl->ofl_osgot->os_outdata->d_buf) + got_off; 1227c478bd9Sstevel@tonic-gate 1237c478bd9Sstevel@tonic-gate /* 1247c478bd9Sstevel@tonic-gate * Fill in the got entry with the address of the next instruction. 1257c478bd9Sstevel@tonic-gate */ 1267c478bd9Sstevel@tonic-gate /* LINTED */ 1277c478bd9Sstevel@tonic-gate *(Word *)gotent = ofl->ofl_osplt->os_shdr->sh_addr + plt_off + 128b3fbe5e6Sseizo M_PLT_INSSIZE; 1297c478bd9Sstevel@tonic-gate 1307c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_SHAROBJ)) { 1317c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 1327c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_DISP_IND; 1337c478bd9Sstevel@tonic-gate pltent += 2; 1347c478bd9Sstevel@tonic-gate /* LINTED */ 1357c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(ofl->ofl_osgot->os_shdr->sh_addr + 1367c478bd9Sstevel@tonic-gate got_off); 1377c478bd9Sstevel@tonic-gate } else { 1387c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 1397c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_REG_DISP_IND; 1407c478bd9Sstevel@tonic-gate pltent += 2; 1417c478bd9Sstevel@tonic-gate /* LINTED */ 1427c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)got_off; 1437c478bd9Sstevel@tonic-gate } 1447c478bd9Sstevel@tonic-gate pltent += 4; 1457c478bd9Sstevel@tonic-gate 1467c478bd9Sstevel@tonic-gate pltent[0] = M_INST_PUSHL; 1477c478bd9Sstevel@tonic-gate pltent++; 1487c478bd9Sstevel@tonic-gate /* LINTED */ 1497c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)rel_off; 1507c478bd9Sstevel@tonic-gate pltent += 4; 1517c478bd9Sstevel@tonic-gate 1527c478bd9Sstevel@tonic-gate plt_off = -(plt_off + 16); /* JMP, PUSHL, JMP take 16 bytes */ 1537c478bd9Sstevel@tonic-gate pltent[0] = M_INST_JMP; 1547c478bd9Sstevel@tonic-gate pltent++; 1557c478bd9Sstevel@tonic-gate /* LINTED */ 1567c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)plt_off; 1577c478bd9Sstevel@tonic-gate } 1587c478bd9Sstevel@tonic-gate 1597c478bd9Sstevel@tonic-gate uintptr_t 1605aefb655Srie ld_perform_outreloc(Rel_desc * orsp, Ofl_desc * ofl) 1617c478bd9Sstevel@tonic-gate { 1627c478bd9Sstevel@tonic-gate Os_desc * relosp, * osp = 0; 1637c478bd9Sstevel@tonic-gate Word ndx, roffset, value; 1647c478bd9Sstevel@tonic-gate Rel rea; 1657c478bd9Sstevel@tonic-gate char *relbits; 1667c478bd9Sstevel@tonic-gate Sym_desc * sdp, * psym = (Sym_desc *)0; 1677c478bd9Sstevel@tonic-gate int sectmoved = 0; 1687c478bd9Sstevel@tonic-gate 1697c478bd9Sstevel@tonic-gate sdp = orsp->rel_sym; 1707c478bd9Sstevel@tonic-gate 1717c478bd9Sstevel@tonic-gate /* 1727c478bd9Sstevel@tonic-gate * If the section this relocation is against has been discarded 1737c478bd9Sstevel@tonic-gate * (-zignore), then also discard (skip) the relocation itself. 1747c478bd9Sstevel@tonic-gate */ 1757c478bd9Sstevel@tonic-gate if (orsp->rel_isdesc && ((orsp->rel_flags & 1767c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | FLG_REL_PLT | FLG_REL_NOINFO)) == 0) && 1777c478bd9Sstevel@tonic-gate (orsp->rel_isdesc->is_flags & FLG_IS_DISCARD)) { 1785aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, orsp)); 1797c478bd9Sstevel@tonic-gate return (1); 1807c478bd9Sstevel@tonic-gate } 1817c478bd9Sstevel@tonic-gate 1827c478bd9Sstevel@tonic-gate /* 1837c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or expanded move 1847c478bd9Sstevel@tonic-gate * table, adjust the relocation entries. 1857c478bd9Sstevel@tonic-gate */ 1867c478bd9Sstevel@tonic-gate if (orsp->rel_move) 1875aefb655Srie ld_adj_movereloc(ofl, orsp); 1887c478bd9Sstevel@tonic-gate 1897c478bd9Sstevel@tonic-gate /* 1907c478bd9Sstevel@tonic-gate * If this is a relocation against a section using a partial initialized 1917c478bd9Sstevel@tonic-gate * symbol, adjust the embedded symbol info. 1927c478bd9Sstevel@tonic-gate * 1937c478bd9Sstevel@tonic-gate * The second argument of the am_I_partial() is the value stored at the 1947c478bd9Sstevel@tonic-gate * target address relocation is going to be applied. 1957c478bd9Sstevel@tonic-gate */ 1967c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) { 1977c478bd9Sstevel@tonic-gate if (ofl->ofl_parsym.head && 1987c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 1997c478bd9Sstevel@tonic-gate /* LINTED */ 2005aefb655Srie (psym = ld_am_I_partial(orsp, *(Xword *) 201b3fbe5e6Sseizo ((uchar_t *)(orsp->rel_isdesc->is_indata->d_buf) + 2027c478bd9Sstevel@tonic-gate orsp->rel_roffset)))) { 2035aefb655Srie DBG_CALL(Dbg_move_outsctadj(ofl->ofl_lml, psym)); 2047c478bd9Sstevel@tonic-gate sectmoved = 1; 2057c478bd9Sstevel@tonic-gate } 2067c478bd9Sstevel@tonic-gate } 2077c478bd9Sstevel@tonic-gate 2087c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 2097c478bd9Sstevel@tonic-gate 2107c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_GOT) { 2117c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 2125aefb655Srie roffset = (Word)ld_calc_got_offset(orsp, ofl); 2135aefb655Srie 2147c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_PLT) { 2157c478bd9Sstevel@tonic-gate /* 2167c478bd9Sstevel@tonic-gate * Note that relocations for PLT's actually 2177c478bd9Sstevel@tonic-gate * cause a relocation againt the GOT. 2187c478bd9Sstevel@tonic-gate */ 2197c478bd9Sstevel@tonic-gate osp = ofl->ofl_osplt; 2207c478bd9Sstevel@tonic-gate roffset = (Word) (ofl->ofl_osgot->os_shdr->sh_addr) + 2217c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 2227c478bd9Sstevel@tonic-gate 2237c478bd9Sstevel@tonic-gate plt_entry(ofl, osp->os_relosdesc->os_szoutrels, sdp); 2247c478bd9Sstevel@tonic-gate 2257c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_BSS) { 2267c478bd9Sstevel@tonic-gate /* 2277c478bd9Sstevel@tonic-gate * This must be a R_386_COPY. For these set the roffset to 2287c478bd9Sstevel@tonic-gate * point to the new symbols location. 2297c478bd9Sstevel@tonic-gate */ 2307c478bd9Sstevel@tonic-gate osp = ofl->ofl_isbss->is_osdesc; 2317c478bd9Sstevel@tonic-gate roffset = (Word)value; 2327c478bd9Sstevel@tonic-gate } else { 2337c478bd9Sstevel@tonic-gate osp = orsp->rel_osdesc; 2347c478bd9Sstevel@tonic-gate 2357c478bd9Sstevel@tonic-gate /* 2367c478bd9Sstevel@tonic-gate * Calculate virtual offset of reference point; equals offset 2377c478bd9Sstevel@tonic-gate * into section + vaddr of section for loadable sections, or 2387c478bd9Sstevel@tonic-gate * offset plus section displacement for nonloadable sections. 2397c478bd9Sstevel@tonic-gate */ 2407c478bd9Sstevel@tonic-gate roffset = orsp->rel_roffset + 2417c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(orsp->rel_isdesc->is_indata); 2427c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) 2437c478bd9Sstevel@tonic-gate roffset += orsp->rel_isdesc->is_osdesc-> 2447c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 2457c478bd9Sstevel@tonic-gate } 2467c478bd9Sstevel@tonic-gate 2477c478bd9Sstevel@tonic-gate if ((osp == 0) || ((relosp = osp->os_relosdesc) == 0)) 2487c478bd9Sstevel@tonic-gate relosp = ofl->ofl_osrel; 2497c478bd9Sstevel@tonic-gate 2507c478bd9Sstevel@tonic-gate /* 2517c478bd9Sstevel@tonic-gate * Assign the symbols index for the output relocation. If the 2527c478bd9Sstevel@tonic-gate * relocation refers to a SECTION symbol then it's index is based upon 2537c478bd9Sstevel@tonic-gate * the output sections symbols index. Otherwise the index can be 2547c478bd9Sstevel@tonic-gate * derived from the symbols index itself. 2557c478bd9Sstevel@tonic-gate */ 2567c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_386_RELATIVE) 2577c478bd9Sstevel@tonic-gate ndx = STN_UNDEF; 2587c478bd9Sstevel@tonic-gate else if ((orsp->rel_flags & FLG_REL_SCNNDX) || 2597c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION)) { 2607c478bd9Sstevel@tonic-gate if (sectmoved == 0) { 2617c478bd9Sstevel@tonic-gate /* 2627c478bd9Sstevel@tonic-gate * Check for a null input section. This can 2637c478bd9Sstevel@tonic-gate * occur if this relocation references a symbol 2647c478bd9Sstevel@tonic-gate * generated by sym_add_sym(). 2657c478bd9Sstevel@tonic-gate */ 2667c478bd9Sstevel@tonic-gate if ((sdp->sd_isc != 0) && 2677c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_osdesc != 0)) 2687c478bd9Sstevel@tonic-gate ndx = sdp->sd_isc->is_osdesc->os_scnsymndx; 2697c478bd9Sstevel@tonic-gate else 2707c478bd9Sstevel@tonic-gate ndx = sdp->sd_shndx; 2717c478bd9Sstevel@tonic-gate } else 2727c478bd9Sstevel@tonic-gate ndx = ofl->ofl_sunwdata1ndx; 2737c478bd9Sstevel@tonic-gate } else 2747c478bd9Sstevel@tonic-gate ndx = sdp->sd_symndx; 2757c478bd9Sstevel@tonic-gate 2767c478bd9Sstevel@tonic-gate relbits = (char *)relosp->os_outdata->d_buf; 2777c478bd9Sstevel@tonic-gate 2787c478bd9Sstevel@tonic-gate rea.r_info = ELF_R_INFO(ndx, orsp->rel_rtype); 2797c478bd9Sstevel@tonic-gate rea.r_offset = roffset; 2805aefb655Srie DBG_CALL(Dbg_reloc_out(ofl, ELF_DBG_LD, SHT_REL, &rea, relosp->os_name, 2815aefb655Srie orsp->rel_sname)); 2827c478bd9Sstevel@tonic-gate 2837c478bd9Sstevel@tonic-gate /* 2847c478bd9Sstevel@tonic-gate * Assert we haven't walked off the end of our relocation table. 2857c478bd9Sstevel@tonic-gate */ 2867c478bd9Sstevel@tonic-gate assert(relosp->os_szoutrels <= relosp->os_shdr->sh_size); 2877c478bd9Sstevel@tonic-gate 2887c478bd9Sstevel@tonic-gate (void) memcpy((relbits + relosp->os_szoutrels), 2897c478bd9Sstevel@tonic-gate (char *)&rea, sizeof (Rel)); 2907c478bd9Sstevel@tonic-gate relosp->os_szoutrels += sizeof (Rel); 2917c478bd9Sstevel@tonic-gate 2927c478bd9Sstevel@tonic-gate /* 2937c478bd9Sstevel@tonic-gate * Determine if this relocation is against a non-writable, allocatable 2947c478bd9Sstevel@tonic-gate * section. If so we may need to provide a text relocation diagnostic. 2957c478bd9Sstevel@tonic-gate * Note that relocations against the .plt (R_386_JMP_SLOT) actually 2967c478bd9Sstevel@tonic-gate * result in modifications to the .got. 2977c478bd9Sstevel@tonic-gate */ 2987c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_386_JMP_SLOT) 2997c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 3007c478bd9Sstevel@tonic-gate 3015aefb655Srie ld_reloc_remain_entry(orsp, osp, ofl); 3027c478bd9Sstevel@tonic-gate return (1); 3037c478bd9Sstevel@tonic-gate } 3047c478bd9Sstevel@tonic-gate 3057c478bd9Sstevel@tonic-gate /* 3067c478bd9Sstevel@tonic-gate * i386 Instructions for TLS processing 3077c478bd9Sstevel@tonic-gate */ 308b3fbe5e6Sseizo static uchar_t tlsinstr_gd_ie[] = { 3097c478bd9Sstevel@tonic-gate /* 3107c478bd9Sstevel@tonic-gate * 0x00 movl %gs:0x0, %eax 3117c478bd9Sstevel@tonic-gate */ 3127c478bd9Sstevel@tonic-gate 0x65, 0xa1, 0x00, 0x00, 0x00, 0x00, 3137c478bd9Sstevel@tonic-gate /* 3147c478bd9Sstevel@tonic-gate * 0x06 addl x(%eax), %eax 3157c478bd9Sstevel@tonic-gate * 0x0c ... 3167c478bd9Sstevel@tonic-gate */ 3177c478bd9Sstevel@tonic-gate 0x03, 0x80, 0x00, 0x00, 0x00, 0x00 3187c478bd9Sstevel@tonic-gate }; 3197c478bd9Sstevel@tonic-gate 320b3fbe5e6Sseizo static uchar_t tlsinstr_gd_le[] = { 3217c478bd9Sstevel@tonic-gate /* 3227c478bd9Sstevel@tonic-gate * 0x00 movl %gs:0x0, %eax 3237c478bd9Sstevel@tonic-gate */ 3247c478bd9Sstevel@tonic-gate 0x65, 0xa1, 0x00, 0x00, 0x00, 0x00, 3257c478bd9Sstevel@tonic-gate /* 3267c478bd9Sstevel@tonic-gate * 0x06 addl $0x0, %eax 3277c478bd9Sstevel@tonic-gate */ 3287c478bd9Sstevel@tonic-gate 0x05, 0x00, 0x00, 0x00, 0x00, 3297c478bd9Sstevel@tonic-gate /* 3307c478bd9Sstevel@tonic-gate * 0x0b nop 3317c478bd9Sstevel@tonic-gate * 0x0c 3327c478bd9Sstevel@tonic-gate */ 3337c478bd9Sstevel@tonic-gate 0x90 3347c478bd9Sstevel@tonic-gate }; 3357c478bd9Sstevel@tonic-gate 336b3fbe5e6Sseizo static uchar_t tlsinstr_gd_ie_movgs[] = { 3377c478bd9Sstevel@tonic-gate /* 3387c478bd9Sstevel@tonic-gate * movl %gs:0x0,%eax 3397c478bd9Sstevel@tonic-gate */ 3407c478bd9Sstevel@tonic-gate 0x65, 0xa1, 0x00, 0x00, 0x00, 00 3417c478bd9Sstevel@tonic-gate }; 3427c478bd9Sstevel@tonic-gate 3437c478bd9Sstevel@tonic-gate #define TLS_GD_IE_MOV 0x8b /* movl opcode */ 3447c478bd9Sstevel@tonic-gate #define TLS_GD_IE_POP 0x58 /* popl + reg */ 3457c478bd9Sstevel@tonic-gate 3467c478bd9Sstevel@tonic-gate #define TLS_GD_LE_MOVL 0xb8 /* movl + reg */ 3477c478bd9Sstevel@tonic-gate 3487c478bd9Sstevel@tonic-gate #define TLS_NOP 0x90 /* NOP instruction */ 3497c478bd9Sstevel@tonic-gate 3507c478bd9Sstevel@tonic-gate #define MODRM_MSK_MOD 0xc0 3517c478bd9Sstevel@tonic-gate #define MODRM_MSK_RO 0x38 3527c478bd9Sstevel@tonic-gate #define MODRM_MSK_RM 0x07 3537c478bd9Sstevel@tonic-gate 3547c478bd9Sstevel@tonic-gate #define SIB_MSK_SS 0xc0 3557c478bd9Sstevel@tonic-gate #define SIB_MSK_IND 0x38 3567c478bd9Sstevel@tonic-gate #define SIB_MSK_BS 0x07 3577c478bd9Sstevel@tonic-gate 3585aefb655Srie static Fixupret 3595aefb655Srie tls_fixups(Ofl_desc *ofl, Rel_desc *arsp) 3607c478bd9Sstevel@tonic-gate { 3617c478bd9Sstevel@tonic-gate Sym_desc *sdp = arsp->rel_sym; 3627c478bd9Sstevel@tonic-gate Word rtype = arsp->rel_rtype; 363b3fbe5e6Sseizo uchar_t *offset, r1, r2; 3647c478bd9Sstevel@tonic-gate 365b3fbe5e6Sseizo offset = (uchar_t *)((uintptr_t)arsp->rel_roffset + 366b3fbe5e6Sseizo (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) + 367b3fbe5e6Sseizo (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf); 3687c478bd9Sstevel@tonic-gate 3697c478bd9Sstevel@tonic-gate if (sdp->sd_ref == REF_DYN_NEED) { 3707c478bd9Sstevel@tonic-gate /* 3717c478bd9Sstevel@tonic-gate * IE reference model 3727c478bd9Sstevel@tonic-gate */ 3737c478bd9Sstevel@tonic-gate switch (rtype) { 3747c478bd9Sstevel@tonic-gate case R_386_TLS_GD: 3757c478bd9Sstevel@tonic-gate /* 3767c478bd9Sstevel@tonic-gate * Transition: 3777c478bd9Sstevel@tonic-gate * 0x0 leal x@tlsgd(,r1,1), %eax 3787c478bd9Sstevel@tonic-gate * 0x7 call ___tls_get_addr 3797c478bd9Sstevel@tonic-gate * 0xc 3807c478bd9Sstevel@tonic-gate * To: 3817c478bd9Sstevel@tonic-gate * 0x0 movl %gs:0, %eax 3827c478bd9Sstevel@tonic-gate * 0x6 addl x@gotntpoff(r1), %eax 3837c478bd9Sstevel@tonic-gate */ 3845aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 3855aefb655Srie rtype, R_386_TLS_GOTIE, arsp->rel_roffset, 3865aefb655Srie sdp->sd_name)); 3877c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_GOTIE; 3887c478bd9Sstevel@tonic-gate arsp->rel_roffset += 5; 3895aefb655Srie 3907c478bd9Sstevel@tonic-gate /* 3917c478bd9Sstevel@tonic-gate * Addjust 'offset' to beginning of instruction 3927c478bd9Sstevel@tonic-gate * sequence. 3937c478bd9Sstevel@tonic-gate */ 3947c478bd9Sstevel@tonic-gate offset -= 3; 3957c478bd9Sstevel@tonic-gate r1 = (offset[2] & SIB_MSK_IND) >> 3; 3967c478bd9Sstevel@tonic-gate (void) memcpy(offset, tlsinstr_gd_ie, 3975aefb655Srie sizeof (tlsinstr_gd_ie)); 3985aefb655Srie 3997c478bd9Sstevel@tonic-gate /* 4007c478bd9Sstevel@tonic-gate * set register %r1 into the addl 4017c478bd9Sstevel@tonic-gate * instruction. 4027c478bd9Sstevel@tonic-gate */ 4037c478bd9Sstevel@tonic-gate offset[0x7] |= r1; 4047c478bd9Sstevel@tonic-gate return (FIX_RELOC); 4055aefb655Srie 4067c478bd9Sstevel@tonic-gate case R_386_TLS_GD_PLT: 4077c478bd9Sstevel@tonic-gate /* 4087c478bd9Sstevel@tonic-gate * Fixup done via the TLS_GD relocation 4097c478bd9Sstevel@tonic-gate */ 4105aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 4115aefb655Srie rtype, R_386_NONE, arsp->rel_roffset, 4125aefb655Srie sdp->sd_name)); 4137c478bd9Sstevel@tonic-gate return (FIX_DONE); 4147c478bd9Sstevel@tonic-gate } 4157c478bd9Sstevel@tonic-gate } 4167c478bd9Sstevel@tonic-gate 4177c478bd9Sstevel@tonic-gate /* 4187c478bd9Sstevel@tonic-gate * LE reference model 4197c478bd9Sstevel@tonic-gate */ 4207c478bd9Sstevel@tonic-gate switch (rtype) { 4217c478bd9Sstevel@tonic-gate case R_386_TLS_GD: 4227c478bd9Sstevel@tonic-gate /* 4237c478bd9Sstevel@tonic-gate * Transition: 4247c478bd9Sstevel@tonic-gate * 0x0 leal x@tlsgd(,r1,1), %eax 4257c478bd9Sstevel@tonic-gate * 0x7 call ___tls_get_addr 4267c478bd9Sstevel@tonic-gate * 0xc 4277c478bd9Sstevel@tonic-gate * To: 4287c478bd9Sstevel@tonic-gate * 0x0 movl %gs:0, %eax 4297c478bd9Sstevel@tonic-gate * 0x6 addl $x@ntpoff, %eax 4307c478bd9Sstevel@tonic-gate * 0xb nop 4317c478bd9Sstevel@tonic-gate * 0xc 4327c478bd9Sstevel@tonic-gate */ 4335aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 4345aefb655Srie rtype, R_386_TLS_LE, arsp->rel_roffset, sdp->sd_name)); 4357c478bd9Sstevel@tonic-gate 4367c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 4377c478bd9Sstevel@tonic-gate arsp->rel_roffset += 4; 4385aefb655Srie 4397c478bd9Sstevel@tonic-gate /* 4407c478bd9Sstevel@tonic-gate * Addjust 'offset' to beginning of instruction 4417c478bd9Sstevel@tonic-gate * sequence. 4427c478bd9Sstevel@tonic-gate */ 4437c478bd9Sstevel@tonic-gate offset -= 3; 4447c478bd9Sstevel@tonic-gate (void) memcpy(offset, tlsinstr_gd_le, 4455aefb655Srie sizeof (tlsinstr_gd_le)); 4467c478bd9Sstevel@tonic-gate return (FIX_RELOC); 4475aefb655Srie 4487c478bd9Sstevel@tonic-gate case R_386_TLS_GD_PLT: 4497c478bd9Sstevel@tonic-gate case R_386_PLT32: 4507c478bd9Sstevel@tonic-gate /* 4517c478bd9Sstevel@tonic-gate * Fixup done via the TLS_GD relocation 4527c478bd9Sstevel@tonic-gate */ 4535aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 4545aefb655Srie rtype, R_386_NONE, arsp->rel_roffset, sdp->sd_name)); 4557c478bd9Sstevel@tonic-gate return (FIX_DONE); 4565aefb655Srie 4577c478bd9Sstevel@tonic-gate case R_386_TLS_LDM_PLT: 4585aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 4595aefb655Srie rtype, R_386_NONE, arsp->rel_roffset, sdp->sd_name)); 4605aefb655Srie 4617c478bd9Sstevel@tonic-gate /* 4627c478bd9Sstevel@tonic-gate * Transition: 4637c478bd9Sstevel@tonic-gate * call __tls_get_addr() 4647c478bd9Sstevel@tonic-gate * to: 4657c478bd9Sstevel@tonic-gate * nop 4667c478bd9Sstevel@tonic-gate * nop 4677c478bd9Sstevel@tonic-gate * nop 4687c478bd9Sstevel@tonic-gate * nop 4697c478bd9Sstevel@tonic-gate * nop 4707c478bd9Sstevel@tonic-gate */ 4717c478bd9Sstevel@tonic-gate *(offset - 1) = TLS_NOP; 4727c478bd9Sstevel@tonic-gate *(offset) = TLS_NOP; 4737c478bd9Sstevel@tonic-gate *(offset + 1) = TLS_NOP; 4747c478bd9Sstevel@tonic-gate *(offset + 2) = TLS_NOP; 4757c478bd9Sstevel@tonic-gate *(offset + 3) = TLS_NOP; 4767c478bd9Sstevel@tonic-gate return (FIX_DONE); 4775aefb655Srie 4787c478bd9Sstevel@tonic-gate case R_386_TLS_LDM: 4795aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 4805aefb655Srie rtype, R_386_NONE, arsp->rel_roffset, sdp->sd_name)); 4815aefb655Srie 4827c478bd9Sstevel@tonic-gate /* 4837c478bd9Sstevel@tonic-gate * Transition: 4847c478bd9Sstevel@tonic-gate * 4857c478bd9Sstevel@tonic-gate * 0x00 leal x1@tlsldm(%ebx), %eax 4867c478bd9Sstevel@tonic-gate * 0x06 call ___tls_get_addr 4877c478bd9Sstevel@tonic-gate * 4887c478bd9Sstevel@tonic-gate * to: 4897c478bd9Sstevel@tonic-gate * 4907c478bd9Sstevel@tonic-gate * 0x00 movl %gs:0, %eax 4917c478bd9Sstevel@tonic-gate */ 4927c478bd9Sstevel@tonic-gate (void) memcpy(offset - 2, tlsinstr_gd_ie_movgs, 4935aefb655Srie sizeof (tlsinstr_gd_ie_movgs)); 4947c478bd9Sstevel@tonic-gate return (FIX_DONE); 4955aefb655Srie 4967c478bd9Sstevel@tonic-gate case R_386_TLS_LDO_32: 4977c478bd9Sstevel@tonic-gate /* 4987c478bd9Sstevel@tonic-gate * Instructions: 4997c478bd9Sstevel@tonic-gate * 5007c478bd9Sstevel@tonic-gate * 0x10 leal x1@dtpoff(%eax), %edx R_386_TLS_LDO_32 5017c478bd9Sstevel@tonic-gate * to 5027c478bd9Sstevel@tonic-gate * 0x10 leal x1@ntpoff(%eax), %edx R_386_TLS_LE 5037c478bd9Sstevel@tonic-gate * 5047c478bd9Sstevel@tonic-gate */ 5057c478bd9Sstevel@tonic-gate offset -= 2; 5067c478bd9Sstevel@tonic-gate 5075aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 5085aefb655Srie rtype, R_386_TLS_LE, arsp->rel_roffset, sdp->sd_name)); 5097c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 5107c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5115aefb655Srie 5127c478bd9Sstevel@tonic-gate case R_386_TLS_GOTIE: 5137c478bd9Sstevel@tonic-gate /* 5147c478bd9Sstevel@tonic-gate * These transitions are a little different than the 5157c478bd9Sstevel@tonic-gate * others, in that we could have multiple instructions 5167c478bd9Sstevel@tonic-gate * pointed to by a single relocation. Depending upon the 5177c478bd9Sstevel@tonic-gate * instruction, we perform a different code transition. 5187c478bd9Sstevel@tonic-gate * 5197c478bd9Sstevel@tonic-gate * Here's the known transitions: 5207c478bd9Sstevel@tonic-gate * 5217c478bd9Sstevel@tonic-gate * 1) movl foo@gotntpoff(%reg1), %reg2 5227c478bd9Sstevel@tonic-gate * 0x8b, 0x80 | (reg2 << 3) | reg1, foo@gotntpoff 5237c478bd9Sstevel@tonic-gate * 5247c478bd9Sstevel@tonic-gate * 2) addl foo@gotntpoff(%reg1), %reg2 5257c478bd9Sstevel@tonic-gate * 0x03, 0x80 | (reg2 << 3) | reg1, foo@gotntpoff 5267c478bd9Sstevel@tonic-gate * 5277c478bd9Sstevel@tonic-gate * Transitions IE -> LE 5287c478bd9Sstevel@tonic-gate * 5297c478bd9Sstevel@tonic-gate * 1) movl $foo@ntpoff, %reg2 5307c478bd9Sstevel@tonic-gate * 0xc7, 0xc0 | reg2, foo@ntpoff 5317c478bd9Sstevel@tonic-gate * 5327c478bd9Sstevel@tonic-gate * 2) addl $foo@ntpoff, %reg2 5337c478bd9Sstevel@tonic-gate * 0x81, 0xc0 | reg2, foo@ntpoff 5347c478bd9Sstevel@tonic-gate * 5357c478bd9Sstevel@tonic-gate * Note: reg1 != 4 (%esp) 5367c478bd9Sstevel@tonic-gate */ 5375aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 5385aefb655Srie rtype, R_386_TLS_LE, arsp->rel_roffset, sdp->sd_name)); 5397c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 5405aefb655Srie 5417c478bd9Sstevel@tonic-gate offset -= 2; 5427c478bd9Sstevel@tonic-gate r2 = (offset[1] & MODRM_MSK_RO) >> 3; 5437c478bd9Sstevel@tonic-gate if (offset[0] == 0x8b) { 5447c478bd9Sstevel@tonic-gate /* case 1 above */ 5457c478bd9Sstevel@tonic-gate offset[0] = 0xc7; /* movl */ 5467c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 5477c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5487c478bd9Sstevel@tonic-gate } 5497c478bd9Sstevel@tonic-gate 5507c478bd9Sstevel@tonic-gate if (offset[0] == 0x03) { 5517c478bd9Sstevel@tonic-gate /* case 2 above */ 5527c478bd9Sstevel@tonic-gate assert(offset[0] == 0x03); 5537c478bd9Sstevel@tonic-gate offset[0] = 0x81; /* addl */ 5547c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 5557c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5567c478bd9Sstevel@tonic-gate } 5577c478bd9Sstevel@tonic-gate 5587c478bd9Sstevel@tonic-gate /* 5597c478bd9Sstevel@tonic-gate * Unexpected instruction sequence - fatal error. 5607c478bd9Sstevel@tonic-gate */ 5615aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_REL_BADTLSINS), 562c13de8f6Sab conv_reloc_386_type(arsp->rel_rtype, 0), 5637c478bd9Sstevel@tonic-gate arsp->rel_isdesc->is_file->ifl_name, 5647c478bd9Sstevel@tonic-gate demangle(arsp->rel_sname), arsp->rel_isdesc->is_name, 5657c478bd9Sstevel@tonic-gate EC_OFF(arsp->rel_roffset)); 5667c478bd9Sstevel@tonic-gate return (FIX_ERROR); 5675aefb655Srie 5687c478bd9Sstevel@tonic-gate case R_386_TLS_IE: 5697c478bd9Sstevel@tonic-gate /* 5707c478bd9Sstevel@tonic-gate * These transitions are a little different than the 5717c478bd9Sstevel@tonic-gate * others, in that we could have multiple instructions 5727c478bd9Sstevel@tonic-gate * pointed to by a single relocation. Depending upon the 5737c478bd9Sstevel@tonic-gate * instruction, we perform a different code transition. 5747c478bd9Sstevel@tonic-gate * 5757c478bd9Sstevel@tonic-gate * Here's the known transitions: 5767c478bd9Sstevel@tonic-gate * 1) movl foo@indntpoff, %eax 5777c478bd9Sstevel@tonic-gate * 0xa1, foo@indntpoff 5787c478bd9Sstevel@tonic-gate * 5797c478bd9Sstevel@tonic-gate * 2) movl foo@indntpoff, %eax 5807c478bd9Sstevel@tonic-gate * 0x8b, 0x05 | (reg << 3), foo@gotntpoff 5817c478bd9Sstevel@tonic-gate * 5827c478bd9Sstevel@tonic-gate * 3) addl foo@indntpoff, %eax 5837c478bd9Sstevel@tonic-gate * 0x03, 0x05 | (reg << 3), foo@gotntpoff 5847c478bd9Sstevel@tonic-gate * 5857c478bd9Sstevel@tonic-gate * Transitions IE -> LE 5867c478bd9Sstevel@tonic-gate * 5877c478bd9Sstevel@tonic-gate * 1) movl $foo@ntpoff, %eax 5887c478bd9Sstevel@tonic-gate * 0xb8, foo@ntpoff 5897c478bd9Sstevel@tonic-gate * 5907c478bd9Sstevel@tonic-gate * 2) movl $foo@ntpoff, %reg 5917c478bd9Sstevel@tonic-gate * 0xc7, 0xc0 | reg, foo@ntpoff 5927c478bd9Sstevel@tonic-gate * 5937c478bd9Sstevel@tonic-gate * 3) addl $foo@ntpoff, %reg 5947c478bd9Sstevel@tonic-gate * 0x81, 0xc0 | reg, foo@ntpoff 5957c478bd9Sstevel@tonic-gate */ 5967c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_386_TLS_LE; 5977c478bd9Sstevel@tonic-gate offset--; 5987c478bd9Sstevel@tonic-gate if (offset[0] == 0xa1) { 5997c478bd9Sstevel@tonic-gate /* case 1 above */ 6007c478bd9Sstevel@tonic-gate offset[0] = 0xb8; /* movl */ 6017c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6027c478bd9Sstevel@tonic-gate } 6037c478bd9Sstevel@tonic-gate 6047c478bd9Sstevel@tonic-gate offset--; 6057c478bd9Sstevel@tonic-gate if (offset[0] == 0x8b) { 6067c478bd9Sstevel@tonic-gate /* case 2 above */ 6077c478bd9Sstevel@tonic-gate r2 = (offset[1] & MODRM_MSK_RO) >> 3; 6087c478bd9Sstevel@tonic-gate offset[0] = 0xc7; /* movl */ 6097c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 6107c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6117c478bd9Sstevel@tonic-gate } 6127c478bd9Sstevel@tonic-gate if (offset[0] == 0x03) { 6137c478bd9Sstevel@tonic-gate /* case 3 above */ 6147c478bd9Sstevel@tonic-gate r2 = (offset[1] & MODRM_MSK_RO) >> 3; 6157c478bd9Sstevel@tonic-gate offset[0] = 0x81; /* addl */ 6167c478bd9Sstevel@tonic-gate offset[1] = 0xc0 | r2; 6177c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6187c478bd9Sstevel@tonic-gate } 6197c478bd9Sstevel@tonic-gate /* 6207c478bd9Sstevel@tonic-gate * Unexpected instruction sequence - fatal error. 6217c478bd9Sstevel@tonic-gate */ 6225aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_REL_BADTLSINS), 623c13de8f6Sab conv_reloc_386_type(arsp->rel_rtype, 0), 6247c478bd9Sstevel@tonic-gate arsp->rel_isdesc->is_file->ifl_name, 6257c478bd9Sstevel@tonic-gate demangle(arsp->rel_sname), arsp->rel_isdesc->is_name, 6267c478bd9Sstevel@tonic-gate EC_OFF(arsp->rel_roffset)); 6277c478bd9Sstevel@tonic-gate return (FIX_ERROR); 6287c478bd9Sstevel@tonic-gate } 6297c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6307c478bd9Sstevel@tonic-gate } 6317c478bd9Sstevel@tonic-gate 6327c478bd9Sstevel@tonic-gate uintptr_t 6335aefb655Srie ld_do_activerelocs(Ofl_desc *ofl) 6347c478bd9Sstevel@tonic-gate { 635141040e8Srie Rel_desc *arsp; 636141040e8Srie Rel_cache *rcp; 637141040e8Srie Listnode *lnp; 6387c478bd9Sstevel@tonic-gate uintptr_t return_code = 1; 6397c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 6407c478bd9Sstevel@tonic-gate Word dtflags1 = ofl->ofl_dtflags_1; 6417c478bd9Sstevel@tonic-gate 642*7010c12aSrie if (ofl->ofl_actrels.head) 643*7010c12aSrie DBG_CALL(Dbg_reloc_doact_title(ofl->ofl_lml)); 644*7010c12aSrie 6457c478bd9Sstevel@tonic-gate /* 646141040e8Srie * Process active relocations. 6477c478bd9Sstevel@tonic-gate */ 6487c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&ofl->ofl_actrels, lnp, rcp)) { 6497c478bd9Sstevel@tonic-gate /* LINTED */ 6507c478bd9Sstevel@tonic-gate for (arsp = (Rel_desc *)(rcp + 1); 6517c478bd9Sstevel@tonic-gate arsp < rcp->rc_free; arsp++) { 652b3fbe5e6Sseizo uchar_t *addr; 653141040e8Srie Xword value; 6547c478bd9Sstevel@tonic-gate Sym_desc *sdp; 6557c478bd9Sstevel@tonic-gate const char *ifl_name; 656141040e8Srie Xword refaddr; 6577c478bd9Sstevel@tonic-gate int moved = 0; 6587c478bd9Sstevel@tonic-gate Gotref gref; 6597c478bd9Sstevel@tonic-gate 6607c478bd9Sstevel@tonic-gate /* 6617c478bd9Sstevel@tonic-gate * If the section this relocation is against has been 6627c478bd9Sstevel@tonic-gate * discarded (-zignore), then discard (skip) the 6637c478bd9Sstevel@tonic-gate * relocation itself. 6647c478bd9Sstevel@tonic-gate */ 6657c478bd9Sstevel@tonic-gate if ((arsp->rel_isdesc->is_flags & FLG_IS_DISCARD) && 6667c478bd9Sstevel@tonic-gate ((arsp->rel_flags & 6677c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | 6687c478bd9Sstevel@tonic-gate FLG_REL_PLT | FLG_REL_NOINFO)) == 0)) { 6695aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, 6705aefb655Srie M_MACH, arsp)); 6717c478bd9Sstevel@tonic-gate continue; 6727c478bd9Sstevel@tonic-gate } 6737c478bd9Sstevel@tonic-gate 6747c478bd9Sstevel@tonic-gate /* 6757c478bd9Sstevel@tonic-gate * We deteremine what the 'got reference' 6767c478bd9Sstevel@tonic-gate * model (if required) is at this point. This 6777c478bd9Sstevel@tonic-gate * needs to be done before tls_fixup() since 6787c478bd9Sstevel@tonic-gate * it may 'transition' our instructions. 6797c478bd9Sstevel@tonic-gate * 6807c478bd9Sstevel@tonic-gate * The got table entries have already been assigned, 6817c478bd9Sstevel@tonic-gate * and we bind to those initial entries. 6827c478bd9Sstevel@tonic-gate */ 6837c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_DTLS) 6847c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 6857c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_MTLS) 6867c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 6877c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_STLS) 6887c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 6897c478bd9Sstevel@tonic-gate else 6907c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 6917c478bd9Sstevel@tonic-gate 6927c478bd9Sstevel@tonic-gate /* 6937c478bd9Sstevel@tonic-gate * Perform any required TLS fixups. 6947c478bd9Sstevel@tonic-gate */ 6957c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_TLSFIX) { 6967c478bd9Sstevel@tonic-gate Fixupret ret; 6977c478bd9Sstevel@tonic-gate 6985aefb655Srie if ((ret = tls_fixups(ofl, arsp)) == FIX_ERROR) 6997c478bd9Sstevel@tonic-gate return (S_ERROR); 7007c478bd9Sstevel@tonic-gate if (ret == FIX_DONE) 7017c478bd9Sstevel@tonic-gate continue; 7027c478bd9Sstevel@tonic-gate } 7037c478bd9Sstevel@tonic-gate 7047c478bd9Sstevel@tonic-gate /* 7057c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or 7067c478bd9Sstevel@tonic-gate * expanded move table, adjust the relocation entries. 7077c478bd9Sstevel@tonic-gate */ 7087c478bd9Sstevel@tonic-gate if (arsp->rel_move) 7095aefb655Srie ld_adj_movereloc(ofl, arsp); 7107c478bd9Sstevel@tonic-gate 7117c478bd9Sstevel@tonic-gate sdp = arsp->rel_sym; 7127c478bd9Sstevel@tonic-gate refaddr = arsp->rel_roffset + 7137c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(arsp->rel_isdesc->is_indata); 7147c478bd9Sstevel@tonic-gate 7157c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_CLVAL) 7167c478bd9Sstevel@tonic-gate value = 0; 7177c478bd9Sstevel@tonic-gate else if (ELF_ST_TYPE(sdp->sd_sym->st_info) == 7187c478bd9Sstevel@tonic-gate STT_SECTION) { 719141040e8Srie Sym_desc *sym; 7207c478bd9Sstevel@tonic-gate 7217c478bd9Sstevel@tonic-gate /* 7227c478bd9Sstevel@tonic-gate * The value for a symbol pointing to a SECTION 7237c478bd9Sstevel@tonic-gate * is based off of that sections position. 7247c478bd9Sstevel@tonic-gate * 7255aefb655Srie * The second argument of the ld_am_I_partial() 7265aefb655Srie * is the value stored at the target address 7277c478bd9Sstevel@tonic-gate * relocation is going to be applied. 7287c478bd9Sstevel@tonic-gate */ 7297c478bd9Sstevel@tonic-gate if ((sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 7307c478bd9Sstevel@tonic-gate /* LINTED */ 7315aefb655Srie (sym = ld_am_I_partial(arsp, *(Xword *) 732b3fbe5e6Sseizo ((uchar_t *) 733b3fbe5e6Sseizo arsp->rel_isdesc->is_indata->d_buf + 7347c478bd9Sstevel@tonic-gate arsp->rel_roffset)))) { 7357c478bd9Sstevel@tonic-gate /* 7367c478bd9Sstevel@tonic-gate * If the symbol is moved, 7377c478bd9Sstevel@tonic-gate * adjust the value 7387c478bd9Sstevel@tonic-gate */ 7397c478bd9Sstevel@tonic-gate value = sym->sd_sym->st_value; 7407c478bd9Sstevel@tonic-gate moved = 1; 7417c478bd9Sstevel@tonic-gate } else { 742141040e8Srie value = _elf_getxoff( 743141040e8Srie sdp->sd_isc->is_indata); 7447c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & 7457c478bd9Sstevel@tonic-gate SHF_ALLOC) 746141040e8Srie value += sdp->sd_isc-> 747141040e8Srie is_osdesc->os_shdr->sh_addr; 7487c478bd9Sstevel@tonic-gate } 7497c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & SHF_TLS) 7507c478bd9Sstevel@tonic-gate value -= ofl->ofl_tlsphdr->p_vaddr; 751141040e8Srie } else { 7527c478bd9Sstevel@tonic-gate /* 753*7010c12aSrie * Else the value is the symbols value. 7547c478bd9Sstevel@tonic-gate */ 7557c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 756141040e8Srie } 7577c478bd9Sstevel@tonic-gate 7587c478bd9Sstevel@tonic-gate /* 7597c478bd9Sstevel@tonic-gate * Relocation against the GLOBAL_OFFSET_TABLE. 7607c478bd9Sstevel@tonic-gate */ 7617c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_GOT) 7627c478bd9Sstevel@tonic-gate arsp->rel_osdesc = ofl->ofl_osgot; 7637c478bd9Sstevel@tonic-gate 7647c478bd9Sstevel@tonic-gate /* 7657c478bd9Sstevel@tonic-gate * If loadable and not producing a relocatable object 7667c478bd9Sstevel@tonic-gate * add the sections virtual address to the reference 7677c478bd9Sstevel@tonic-gate * address. 7687c478bd9Sstevel@tonic-gate */ 7697c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_LOAD) && 770141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) 7717c478bd9Sstevel@tonic-gate refaddr += arsp->rel_isdesc->is_osdesc-> 7727c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 7737c478bd9Sstevel@tonic-gate 7747c478bd9Sstevel@tonic-gate /* 7757c478bd9Sstevel@tonic-gate * If this entry has a PLT assigned to it, it's 7767c478bd9Sstevel@tonic-gate * value is actually the address of the PLT (and 7777c478bd9Sstevel@tonic-gate * not the address of the function). 7787c478bd9Sstevel@tonic-gate */ 7797c478bd9Sstevel@tonic-gate if (IS_PLT(arsp->rel_rtype)) { 7807c478bd9Sstevel@tonic-gate if (sdp->sd_aux && sdp->sd_aux->sa_PLTndx) 7815aefb655Srie value = ld_calc_plt_addr(sdp, ofl); 7827c478bd9Sstevel@tonic-gate } 7837c478bd9Sstevel@tonic-gate 784141040e8Srie /* 785141040e8Srie * Determine whether the value needs further adjustment. 786141040e8Srie * Filter through the attributes of the relocation to 787141040e8Srie * determine what adjustment is required. Note, many 788141040e8Srie * of the following cases are only applicable when a 789141040e8Srie * .got is present. As a .got is not generated when a 790141040e8Srie * relocatable object is being built, any adjustments 791141040e8Srie * that require a .got need to be skipped. 792141040e8Srie */ 793141040e8Srie if ((arsp->rel_flags & FLG_REL_GOT) && 794141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 7957c478bd9Sstevel@tonic-gate Xword R1addr; 7967c478bd9Sstevel@tonic-gate uintptr_t R2addr; 7977c478bd9Sstevel@tonic-gate Word gotndx; 7987c478bd9Sstevel@tonic-gate Gotndx *gnp; 7997c478bd9Sstevel@tonic-gate 8007c478bd9Sstevel@tonic-gate /* 8017c478bd9Sstevel@tonic-gate * Perform relocation against GOT table. Since 8027c478bd9Sstevel@tonic-gate * this doesn't fit exactly into a relocation 8037c478bd9Sstevel@tonic-gate * we place the appropriate byte in the GOT 8047c478bd9Sstevel@tonic-gate * directly 8057c478bd9Sstevel@tonic-gate * 8067c478bd9Sstevel@tonic-gate * Calculate offset into GOT at which to apply 8077c478bd9Sstevel@tonic-gate * the relocation. 8087c478bd9Sstevel@tonic-gate */ 8095aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, 8107c478bd9Sstevel@tonic-gate ofl, 0); 8117c478bd9Sstevel@tonic-gate assert(gnp); 8127c478bd9Sstevel@tonic-gate 8137c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_386_TLS_DTPOFF32) 8147c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx + 1; 8157c478bd9Sstevel@tonic-gate else 8167c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx; 8177c478bd9Sstevel@tonic-gate 8187c478bd9Sstevel@tonic-gate R1addr = (Xword)(gotndx * M_GOT_ENTSIZE); 8197c478bd9Sstevel@tonic-gate 8207c478bd9Sstevel@tonic-gate /* 8217c478bd9Sstevel@tonic-gate * Add the GOTs data's offset. 8227c478bd9Sstevel@tonic-gate */ 8237c478bd9Sstevel@tonic-gate R2addr = R1addr + (uintptr_t) 8247c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_outdata->d_buf; 8257c478bd9Sstevel@tonic-gate 8265aefb655Srie DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, 8275aefb655Srie ELF_DBG_LD, M_MACH, SHT_REL, 8287c478bd9Sstevel@tonic-gate arsp->rel_rtype, R1addr, value, 8297c478bd9Sstevel@tonic-gate arsp->rel_sname, arsp->rel_osdesc)); 8307c478bd9Sstevel@tonic-gate 8317c478bd9Sstevel@tonic-gate /* 8327c478bd9Sstevel@tonic-gate * And do it. 8337c478bd9Sstevel@tonic-gate */ 834141040e8Srie *(Xword *)R2addr = value; 8357c478bd9Sstevel@tonic-gate continue; 8367c478bd9Sstevel@tonic-gate 837141040e8Srie } else if (IS_GOT_BASED(arsp->rel_rtype) && 838141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8397c478bd9Sstevel@tonic-gate value -= ofl->ofl_osgot->os_shdr->sh_addr; 840141040e8Srie 841141040e8Srie } else if (IS_GOT_PC(arsp->rel_rtype) && 842141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 843141040e8Srie value = 844141040e8Srie (Xword)(ofl->ofl_osgot->os_shdr->sh_addr) - 845141040e8Srie refaddr; 846141040e8Srie 8477c478bd9Sstevel@tonic-gate } else if ((IS_PC_RELATIVE(arsp->rel_rtype)) && 848141040e8Srie (((flags & FLG_OF_RELOBJ) == 0) || 8497c478bd9Sstevel@tonic-gate (arsp->rel_osdesc == sdp->sd_isc->is_osdesc))) { 8507c478bd9Sstevel@tonic-gate value -= refaddr; 851141040e8Srie 8527c478bd9Sstevel@tonic-gate } else if (IS_TLS_INS(arsp->rel_rtype) && 853141040e8Srie IS_GOT_RELATIVE(arsp->rel_rtype) && 854141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8557c478bd9Sstevel@tonic-gate Gotndx *gnp; 8567c478bd9Sstevel@tonic-gate 8575aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, 8587c478bd9Sstevel@tonic-gate ofl, 0); 8597c478bd9Sstevel@tonic-gate assert(gnp); 860141040e8Srie value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 8617c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_386_TLS_IE) { 862141040e8Srie value += 863141040e8Srie ofl->ofl_osgot->os_shdr->sh_addr; 8647c478bd9Sstevel@tonic-gate } 865141040e8Srie 866141040e8Srie } else if (IS_GOT_RELATIVE(arsp->rel_rtype) && 867141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 868141040e8Srie Gotndx *gnp; 8697c478bd9Sstevel@tonic-gate 8705aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 8717c478bd9Sstevel@tonic-gate GOT_REF_GENERIC, ofl, 0); 8727c478bd9Sstevel@tonic-gate assert(gnp); 873141040e8Srie value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 874141040e8Srie 875141040e8Srie } else if ((arsp->rel_flags & FLG_REL_STLS) && 876141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8777c478bd9Sstevel@tonic-gate Xword tlsstatsize; 878141040e8Srie 8797c478bd9Sstevel@tonic-gate /* 8807c478bd9Sstevel@tonic-gate * This is the LE TLS reference model. Static 8817c478bd9Sstevel@tonic-gate * offset is hard-coded. 8827c478bd9Sstevel@tonic-gate */ 883141040e8Srie tlsstatsize = 884141040e8Srie S_ROUND(ofl->ofl_tlsphdr->p_memsz, 8857c478bd9Sstevel@tonic-gate M_TLSSTATALIGN); 8867c478bd9Sstevel@tonic-gate value = tlsstatsize - value; 887141040e8Srie 8887c478bd9Sstevel@tonic-gate /* 889141040e8Srie * Since this code is fixed up, it assumes a 890141040e8Srie * negative offset that can be added to the 891141040e8Srie * thread pointer. 8927c478bd9Sstevel@tonic-gate */ 8937c478bd9Sstevel@tonic-gate if ((arsp->rel_rtype == R_386_TLS_LDO_32) || 8947c478bd9Sstevel@tonic-gate (arsp->rel_rtype == R_386_TLS_LE)) 8957c478bd9Sstevel@tonic-gate value = -value; 8967c478bd9Sstevel@tonic-gate } 8977c478bd9Sstevel@tonic-gate 8987c478bd9Sstevel@tonic-gate if (arsp->rel_isdesc->is_file) 8997c478bd9Sstevel@tonic-gate ifl_name = arsp->rel_isdesc->is_file->ifl_name; 9007c478bd9Sstevel@tonic-gate else 9017c478bd9Sstevel@tonic-gate ifl_name = MSG_INTL(MSG_STR_NULL); 9027c478bd9Sstevel@tonic-gate 9037c478bd9Sstevel@tonic-gate /* 9047c478bd9Sstevel@tonic-gate * Make sure we have data to relocate. Compiler and 9057c478bd9Sstevel@tonic-gate * assembler developers have been known to generate 9067c478bd9Sstevel@tonic-gate * relocations against invalid sections (normally .bss), 9077c478bd9Sstevel@tonic-gate * so for their benefit give them sufficient information 9087c478bd9Sstevel@tonic-gate * to help analyze the problem. End users should never 9097c478bd9Sstevel@tonic-gate * see this. 9107c478bd9Sstevel@tonic-gate */ 9117c478bd9Sstevel@tonic-gate if (arsp->rel_isdesc->is_indata->d_buf == 0) { 9125aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 9135aefb655Srie MSG_INTL(MSG_REL_EMPTYSEC), 914c13de8f6Sab conv_reloc_386_type(arsp->rel_rtype, 0), 9157c478bd9Sstevel@tonic-gate ifl_name, demangle(arsp->rel_sname), 9167c478bd9Sstevel@tonic-gate arsp->rel_isdesc->is_name); 9177c478bd9Sstevel@tonic-gate return (S_ERROR); 9187c478bd9Sstevel@tonic-gate } 9197c478bd9Sstevel@tonic-gate 9207c478bd9Sstevel@tonic-gate /* 9217c478bd9Sstevel@tonic-gate * Get the address of the data item we need to modify. 9227c478bd9Sstevel@tonic-gate */ 923b3fbe5e6Sseizo addr = (uchar_t *)((uintptr_t)arsp->rel_roffset + 924b3fbe5e6Sseizo (uintptr_t)_elf_getxoff(arsp->rel_isdesc-> 925b3fbe5e6Sseizo is_indata)); 9267c478bd9Sstevel@tonic-gate 9275aefb655Srie DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, ELF_DBG_LD, 9285aefb655Srie M_MACH, SHT_REL, arsp->rel_rtype, EC_NATPTR(addr), 9295aefb655Srie value, arsp->rel_sname, arsp->rel_osdesc)); 9307c478bd9Sstevel@tonic-gate addr += (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf; 9317c478bd9Sstevel@tonic-gate 9325aefb655Srie if ((((uintptr_t)addr - (uintptr_t)ofl->ofl_nehdr) > 933b3fbe5e6Sseizo ofl->ofl_size) || (arsp->rel_roffset > 9347c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_shdr->sh_size)) { 9357c478bd9Sstevel@tonic-gate int class; 9367c478bd9Sstevel@tonic-gate 9377c478bd9Sstevel@tonic-gate if (((uintptr_t)addr - 9385aefb655Srie (uintptr_t)ofl->ofl_nehdr) > ofl->ofl_size) 9397c478bd9Sstevel@tonic-gate class = ERR_FATAL; 9407c478bd9Sstevel@tonic-gate else 9417c478bd9Sstevel@tonic-gate class = ERR_WARNING; 9427c478bd9Sstevel@tonic-gate 9435aefb655Srie eprintf(ofl->ofl_lml, class, 9445aefb655Srie MSG_INTL(MSG_REL_INVALOFFSET), 945c13de8f6Sab conv_reloc_386_type(arsp->rel_rtype, 0), 9467c478bd9Sstevel@tonic-gate ifl_name, arsp->rel_isdesc->is_name, 9477c478bd9Sstevel@tonic-gate demangle(arsp->rel_sname), 9487c478bd9Sstevel@tonic-gate EC_ADDR((uintptr_t)addr - 9495aefb655Srie (uintptr_t)ofl->ofl_nehdr)); 9507c478bd9Sstevel@tonic-gate 9517c478bd9Sstevel@tonic-gate if (class == ERR_FATAL) { 9527c478bd9Sstevel@tonic-gate return_code = S_ERROR; 9537c478bd9Sstevel@tonic-gate continue; 9547c478bd9Sstevel@tonic-gate } 9557c478bd9Sstevel@tonic-gate } 9567c478bd9Sstevel@tonic-gate 9577c478bd9Sstevel@tonic-gate /* 9587c478bd9Sstevel@tonic-gate * The relocation is additive. Ignore the previous 9597c478bd9Sstevel@tonic-gate * symbol value if this local partial symbol is 9607c478bd9Sstevel@tonic-gate * expanded. 9617c478bd9Sstevel@tonic-gate */ 9627c478bd9Sstevel@tonic-gate if (moved) 9637c478bd9Sstevel@tonic-gate value -= *addr; 9647c478bd9Sstevel@tonic-gate 9657c478bd9Sstevel@tonic-gate /* 9667c478bd9Sstevel@tonic-gate * If '-z noreloc' is specified - skip the do_reloc 9677c478bd9Sstevel@tonic-gate * stage. 9687c478bd9Sstevel@tonic-gate */ 9697c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_RELOBJ) || 9707c478bd9Sstevel@tonic-gate !(dtflags1 & DF_1_NORELOC)) { 9715aefb655Srie if (do_reloc((uchar_t)arsp->rel_rtype, addr, 9725aefb655Srie &value, arsp->rel_sname, ifl_name, 9735aefb655Srie ofl->ofl_lml) == 0) 9747c478bd9Sstevel@tonic-gate return_code = S_ERROR; 9757c478bd9Sstevel@tonic-gate } 9767c478bd9Sstevel@tonic-gate } 9777c478bd9Sstevel@tonic-gate } 9787c478bd9Sstevel@tonic-gate return (return_code); 9797c478bd9Sstevel@tonic-gate } 9807c478bd9Sstevel@tonic-gate 981141040e8Srie /* 982141040e8Srie * Add an output relocation record. 983141040e8Srie */ 9847c478bd9Sstevel@tonic-gate uintptr_t 9855aefb655Srie ld_add_outrel(Word flags, Rel_desc *rsp, Ofl_desc *ofl) 9867c478bd9Sstevel@tonic-gate { 987141040e8Srie Rel_desc *orsp; 988141040e8Srie Rel_cache *rcp; 989141040e8Srie Sym_desc *sdp = rsp->rel_sym; 9907c478bd9Sstevel@tonic-gate 9917c478bd9Sstevel@tonic-gate /* 9927c478bd9Sstevel@tonic-gate * Static executables *do not* want any relocations against them. 9937c478bd9Sstevel@tonic-gate * Since our engine still creates relocations against a WEAK UNDEFINED 9947c478bd9Sstevel@tonic-gate * symbol in a static executable, it's best to disable them here 9957c478bd9Sstevel@tonic-gate * instead of through out the relocation code. 9967c478bd9Sstevel@tonic-gate */ 9977c478bd9Sstevel@tonic-gate if ((ofl->ofl_flags & (FLG_OF_STATIC | FLG_OF_EXEC)) == 9987c478bd9Sstevel@tonic-gate (FLG_OF_STATIC | FLG_OF_EXEC)) 9997c478bd9Sstevel@tonic-gate return (1); 10007c478bd9Sstevel@tonic-gate 10017c478bd9Sstevel@tonic-gate /* 10027c478bd9Sstevel@tonic-gate * If no relocation cache structures are available allocate 10037c478bd9Sstevel@tonic-gate * a new one and link it into the cache list. 10047c478bd9Sstevel@tonic-gate */ 10057c478bd9Sstevel@tonic-gate if ((ofl->ofl_outrels.tail == 0) || 10067c478bd9Sstevel@tonic-gate ((rcp = (Rel_cache *)ofl->ofl_outrels.tail->data) == 0) || 10077c478bd9Sstevel@tonic-gate ((orsp = rcp->rc_free) == rcp->rc_end)) { 10087c478bd9Sstevel@tonic-gate static size_t nextsize = 0; 10097c478bd9Sstevel@tonic-gate size_t size; 10107c478bd9Sstevel@tonic-gate 10117c478bd9Sstevel@tonic-gate /* 10127c478bd9Sstevel@tonic-gate * Output relocation numbers can vary considerably between 10137c478bd9Sstevel@tonic-gate * building executables or shared objects (pic vs. non-pic), 10147c478bd9Sstevel@tonic-gate * etc. But, they typically aren't very large, so for these 10157c478bd9Sstevel@tonic-gate * objects use a standard bucket size. For building relocatable 10167c478bd9Sstevel@tonic-gate * objects, typically there will be an output relocation for 10177c478bd9Sstevel@tonic-gate * every input relocation. 10187c478bd9Sstevel@tonic-gate */ 10197c478bd9Sstevel@tonic-gate if (nextsize == 0) { 10207c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_RELOBJ) { 10217c478bd9Sstevel@tonic-gate if ((size = ofl->ofl_relocincnt) == 0) 10227c478bd9Sstevel@tonic-gate size = REL_LOIDESCNO; 10237c478bd9Sstevel@tonic-gate if (size > REL_HOIDESCNO) 10247c478bd9Sstevel@tonic-gate nextsize = REL_HOIDESCNO; 10257c478bd9Sstevel@tonic-gate else 10267c478bd9Sstevel@tonic-gate nextsize = REL_LOIDESCNO; 10277c478bd9Sstevel@tonic-gate } else 10287c478bd9Sstevel@tonic-gate nextsize = size = REL_HOIDESCNO; 10297c478bd9Sstevel@tonic-gate } else 10307c478bd9Sstevel@tonic-gate size = nextsize; 10317c478bd9Sstevel@tonic-gate 10327c478bd9Sstevel@tonic-gate size = size * sizeof (Rel_desc); 10337c478bd9Sstevel@tonic-gate 10347c478bd9Sstevel@tonic-gate if (((rcp = libld_malloc(sizeof (Rel_cache) + size)) == 0) || 10357c478bd9Sstevel@tonic-gate (list_appendc(&ofl->ofl_outrels, rcp) == 0)) 10367c478bd9Sstevel@tonic-gate return (S_ERROR); 10377c478bd9Sstevel@tonic-gate 10387c478bd9Sstevel@tonic-gate /* LINTED */ 10397c478bd9Sstevel@tonic-gate rcp->rc_free = orsp = (Rel_desc *)(rcp + 1); 10407c478bd9Sstevel@tonic-gate /* LINTED */ 10417c478bd9Sstevel@tonic-gate rcp->rc_end = (Rel_desc *)((char *)rcp->rc_free + size); 10427c478bd9Sstevel@tonic-gate } 10437c478bd9Sstevel@tonic-gate 10447c478bd9Sstevel@tonic-gate /* 10457c478bd9Sstevel@tonic-gate * If we are adding a output relocation against a section 10467c478bd9Sstevel@tonic-gate * symbol (non-RELATIVE) then mark that section. These sections 10477c478bd9Sstevel@tonic-gate * will be added to the .dynsym symbol table. 10487c478bd9Sstevel@tonic-gate */ 10497c478bd9Sstevel@tonic-gate if (sdp && (rsp->rel_rtype != M_R_RELATIVE) && 10507c478bd9Sstevel@tonic-gate ((flags & FLG_REL_SCNNDX) || 10517c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION))) { 10527c478bd9Sstevel@tonic-gate 10537c478bd9Sstevel@tonic-gate /* 10547c478bd9Sstevel@tonic-gate * If this is a COMMON symbol - no output section 10557c478bd9Sstevel@tonic-gate * exists yet - (it's created as part of sym_validate()). 10567c478bd9Sstevel@tonic-gate * So - we mark here that when it's created it should 10577c478bd9Sstevel@tonic-gate * be tagged with the FLG_OS_OUTREL flag. 10587c478bd9Sstevel@tonic-gate */ 10597c478bd9Sstevel@tonic-gate if ((sdp->sd_flags & FLG_SY_SPECSEC) && 10600bc07c75Srie (sdp->sd_sym->st_shndx == SHN_COMMON)) { 10617c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) != STT_TLS) 10627c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_BSSOREL; 10637c478bd9Sstevel@tonic-gate else 10647c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_TLSOREL; 1065141040e8Srie } else { 1066141040e8Srie Os_desc *osp = sdp->sd_isc->is_osdesc; 10677c478bd9Sstevel@tonic-gate 1068c1c6f601Srie if (osp && ((osp->os_flags & FLG_OS_OUTREL) == 0)) { 10697c478bd9Sstevel@tonic-gate ofl->ofl_dynshdrcnt++; 10707c478bd9Sstevel@tonic-gate osp->os_flags |= FLG_OS_OUTREL; 10717c478bd9Sstevel@tonic-gate } 10727c478bd9Sstevel@tonic-gate } 10737c478bd9Sstevel@tonic-gate } 10747c478bd9Sstevel@tonic-gate 10757c478bd9Sstevel@tonic-gate *orsp = *rsp; 10767c478bd9Sstevel@tonic-gate orsp->rel_flags |= flags; 10777c478bd9Sstevel@tonic-gate 10787c478bd9Sstevel@tonic-gate rcp->rc_free++; 10797c478bd9Sstevel@tonic-gate ofl->ofl_outrelscnt++; 10807c478bd9Sstevel@tonic-gate 10817c478bd9Sstevel@tonic-gate if (flags & FLG_REL_GOT) 10827c478bd9Sstevel@tonic-gate ofl->ofl_relocgotsz += (Xword)sizeof (Rel); 10837c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_PLT) 10847c478bd9Sstevel@tonic-gate ofl->ofl_relocpltsz += (Xword)sizeof (Rel); 10857c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_BSS) 10867c478bd9Sstevel@tonic-gate ofl->ofl_relocbsssz += (Xword)sizeof (Rel); 10877c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_NOINFO) 10887c478bd9Sstevel@tonic-gate ofl->ofl_relocrelsz += (Xword)sizeof (Rel); 10897c478bd9Sstevel@tonic-gate else 10907c478bd9Sstevel@tonic-gate orsp->rel_osdesc->os_szoutrels += (Xword)sizeof (Rel); 10917c478bd9Sstevel@tonic-gate 10927c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == M_R_RELATIVE) 10937c478bd9Sstevel@tonic-gate ofl->ofl_relocrelcnt++; 10947c478bd9Sstevel@tonic-gate 10957c478bd9Sstevel@tonic-gate /* 10967c478bd9Sstevel@tonic-gate * We don't perform sorting on PLT relocations because 10977c478bd9Sstevel@tonic-gate * they have already been assigned a PLT index and if we 10987c478bd9Sstevel@tonic-gate * were to sort them we would have to re-assign the plt indexes. 10997c478bd9Sstevel@tonic-gate */ 11007c478bd9Sstevel@tonic-gate if (!(flags & FLG_REL_PLT)) 11017c478bd9Sstevel@tonic-gate ofl->ofl_reloccnt++; 11027c478bd9Sstevel@tonic-gate 11037c478bd9Sstevel@tonic-gate /* 1104141040e8Srie * Insure a GLOBAL_OFFSET_TABLE is generated if required. 11057c478bd9Sstevel@tonic-gate */ 1106141040e8Srie if (IS_GOT_REQUIRED(orsp->rel_rtype)) 11077c478bd9Sstevel@tonic-gate ofl->ofl_flags |= FLG_OF_BLDGOT; 11087c478bd9Sstevel@tonic-gate 11097c478bd9Sstevel@tonic-gate /* 11107c478bd9Sstevel@tonic-gate * Identify and possibly warn of a displacement relocation. 11117c478bd9Sstevel@tonic-gate */ 11127c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_DISP) { 11137c478bd9Sstevel@tonic-gate ofl->ofl_dtflags_1 |= DF_1_DISPRELPND; 11147c478bd9Sstevel@tonic-gate 11157c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_VERBOSE) 11165aefb655Srie ld_disp_errmsg(MSG_INTL(MSG_REL_DISPREL4), orsp, ofl); 11177c478bd9Sstevel@tonic-gate } 11185aefb655Srie DBG_CALL(Dbg_reloc_ors_entry(ofl->ofl_lml, ELF_DBG_LD, SHT_REL, 11195aefb655Srie M_MACH, orsp)); 11207c478bd9Sstevel@tonic-gate return (1); 11217c478bd9Sstevel@tonic-gate } 11227c478bd9Sstevel@tonic-gate 11237c478bd9Sstevel@tonic-gate /* 11247c478bd9Sstevel@tonic-gate * Stub routine since register symbols are not supported on i386. 11257c478bd9Sstevel@tonic-gate */ 11267c478bd9Sstevel@tonic-gate /* ARGSUSED */ 11277c478bd9Sstevel@tonic-gate uintptr_t 11285aefb655Srie ld_reloc_register(Rel_desc * rsp, Is_desc * isp, Ofl_desc * ofl) 11297c478bd9Sstevel@tonic-gate { 11305aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_REL_NOREG)); 11317c478bd9Sstevel@tonic-gate return (S_ERROR); 11327c478bd9Sstevel@tonic-gate } 11337c478bd9Sstevel@tonic-gate 11347c478bd9Sstevel@tonic-gate /* 11357c478bd9Sstevel@tonic-gate * process relocation for a LOCAL symbol 11367c478bd9Sstevel@tonic-gate */ 11377c478bd9Sstevel@tonic-gate uintptr_t 11385aefb655Srie ld_reloc_local(Rel_desc * rsp, Ofl_desc * ofl) 11397c478bd9Sstevel@tonic-gate { 11407c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 11417c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 11420bc07c75Srie Word shndx = sdp->sd_sym->st_shndx; 11437c478bd9Sstevel@tonic-gate 11447c478bd9Sstevel@tonic-gate /* 11457c478bd9Sstevel@tonic-gate * if ((shared object) and (not pc relative relocation) and 11467c478bd9Sstevel@tonic-gate * (not against ABS symbol)) 11477c478bd9Sstevel@tonic-gate * then 11487c478bd9Sstevel@tonic-gate * build R_386_RELATIVE 11497c478bd9Sstevel@tonic-gate * fi 11507c478bd9Sstevel@tonic-gate */ 11517c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_SHAROBJ) && (rsp->rel_flags & FLG_REL_LOAD) && 11527c478bd9Sstevel@tonic-gate !(IS_PC_RELATIVE(rsp->rel_rtype)) && 11537c478bd9Sstevel@tonic-gate !(IS_GOT_BASED(rsp->rel_rtype)) && 11547c478bd9Sstevel@tonic-gate !(rsp->rel_isdesc != NULL && 11557c478bd9Sstevel@tonic-gate (rsp->rel_isdesc->is_shdr->sh_type == SHT_SUNW_dof)) && 11567c478bd9Sstevel@tonic-gate (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) || 11577c478bd9Sstevel@tonic-gate (shndx != SHN_ABS) || (sdp->sd_aux && sdp->sd_aux->sa_symspec))) { 11587c478bd9Sstevel@tonic-gate Word ortype = rsp->rel_rtype; 11597c478bd9Sstevel@tonic-gate 11607c478bd9Sstevel@tonic-gate rsp->rel_rtype = R_386_RELATIVE; 11615aefb655Srie if (ld_add_outrel(NULL, rsp, ofl) == S_ERROR) 11627c478bd9Sstevel@tonic-gate return (S_ERROR); 11637c478bd9Sstevel@tonic-gate rsp->rel_rtype = ortype; 11647c478bd9Sstevel@tonic-gate } 11657c478bd9Sstevel@tonic-gate 11667c478bd9Sstevel@tonic-gate /* 11677c478bd9Sstevel@tonic-gate * If the relocation is against a 'non-allocatable' section 11687c478bd9Sstevel@tonic-gate * and we can not resolve it now - then give a warning 11697c478bd9Sstevel@tonic-gate * message. 11707c478bd9Sstevel@tonic-gate * 11717c478bd9Sstevel@tonic-gate * We can not resolve the symbol if either: 11727c478bd9Sstevel@tonic-gate * a) it's undefined 11737c478bd9Sstevel@tonic-gate * b) it's defined in a shared library and a 11747c478bd9Sstevel@tonic-gate * COPY relocation hasn't moved it to the executable 11757c478bd9Sstevel@tonic-gate * 11767c478bd9Sstevel@tonic-gate * Note: because we process all of the relocations against the 11777c478bd9Sstevel@tonic-gate * text segment before any others - we know whether 11787c478bd9Sstevel@tonic-gate * or not a copy relocation will be generated before 11797c478bd9Sstevel@tonic-gate * we get here (see reloc_init()->reloc_segments()). 11807c478bd9Sstevel@tonic-gate */ 11817c478bd9Sstevel@tonic-gate if (!(rsp->rel_flags & FLG_REL_LOAD) && 11827c478bd9Sstevel@tonic-gate ((shndx == SHN_UNDEF) || 11837c478bd9Sstevel@tonic-gate ((sdp->sd_ref == REF_DYN_NEED) && 11847c478bd9Sstevel@tonic-gate ((sdp->sd_flags & FLG_SY_MVTOCOMM) == 0)))) { 11857c478bd9Sstevel@tonic-gate /* 11867c478bd9Sstevel@tonic-gate * If the relocation is against a SHT_SUNW_ANNOTATE 11877c478bd9Sstevel@tonic-gate * section - then silently ignore that the relocation 11887c478bd9Sstevel@tonic-gate * can not be resolved. 11897c478bd9Sstevel@tonic-gate */ 11907c478bd9Sstevel@tonic-gate if (rsp->rel_osdesc && 11917c478bd9Sstevel@tonic-gate (rsp->rel_osdesc->os_shdr->sh_type == SHT_SUNW_ANNOTATE)) 11927c478bd9Sstevel@tonic-gate return (0); 11935aefb655Srie eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_REL_EXTERNSYM), 1194c13de8f6Sab conv_reloc_386_type(rsp->rel_rtype, 0), 11957c478bd9Sstevel@tonic-gate rsp->rel_isdesc->is_file->ifl_name, 11967c478bd9Sstevel@tonic-gate demangle(rsp->rel_sname), rsp->rel_osdesc->os_name); 11977c478bd9Sstevel@tonic-gate return (1); 11987c478bd9Sstevel@tonic-gate } 11997c478bd9Sstevel@tonic-gate 12007c478bd9Sstevel@tonic-gate /* 12017c478bd9Sstevel@tonic-gate * Perform relocation. 12027c478bd9Sstevel@tonic-gate */ 12035aefb655Srie return (ld_add_actrel(NULL, rsp, ofl)); 12047c478bd9Sstevel@tonic-gate } 12057c478bd9Sstevel@tonic-gate 12067c478bd9Sstevel@tonic-gate uintptr_t 12077c478bd9Sstevel@tonic-gate /* ARGSUSED */ 12085aefb655Srie ld_reloc_GOTOP(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 12097c478bd9Sstevel@tonic-gate { 12107c478bd9Sstevel@tonic-gate /* 12117c478bd9Sstevel@tonic-gate * Stub routine for common code compatibility, we shouldn't 12127c478bd9Sstevel@tonic-gate * actually get here on x86. 12137c478bd9Sstevel@tonic-gate */ 12147c478bd9Sstevel@tonic-gate assert(0); 12157c478bd9Sstevel@tonic-gate return (S_ERROR); 12167c478bd9Sstevel@tonic-gate } 12177c478bd9Sstevel@tonic-gate 12187c478bd9Sstevel@tonic-gate uintptr_t 12195aefb655Srie ld_reloc_TLS(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 12207c478bd9Sstevel@tonic-gate { 12217c478bd9Sstevel@tonic-gate Word rtype = rsp->rel_rtype; 12227c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 12237c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 12247c478bd9Sstevel@tonic-gate Gotndx *gnp; 12257c478bd9Sstevel@tonic-gate 12267c478bd9Sstevel@tonic-gate /* 1227d326b23bSrie * If we're building an executable - use either the IE or LE access 1228d326b23bSrie * model. If we're building a shared object process any IE model. 12297c478bd9Sstevel@tonic-gate */ 1230d326b23bSrie if ((flags & FLG_OF_EXEC) || (IS_TLS_IE(rtype))) { 12317c478bd9Sstevel@tonic-gate /* 1232d326b23bSrie * Set the DF_STATIC_TLS flag. 12337c478bd9Sstevel@tonic-gate */ 12347c478bd9Sstevel@tonic-gate ofl->ofl_dtflags |= DF_STATIC_TLS; 12357c478bd9Sstevel@tonic-gate 1236d326b23bSrie if (!local || ((flags & FLG_OF_EXEC) == 0)) { 12377c478bd9Sstevel@tonic-gate /* 1238d326b23bSrie * Assign a GOT entry for static TLS references. 12397c478bd9Sstevel@tonic-gate */ 1240d326b23bSrie if ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 1241d326b23bSrie GOT_REF_TLSIE, ofl, 0)) == 0) { 12427c478bd9Sstevel@tonic-gate 1243d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, 1244d326b23bSrie gnp, GOT_REF_TLSIE, FLG_REL_STLS, 1245d326b23bSrie rtype, R_386_TLS_TPOFF, 0) == S_ERROR) 1246d326b23bSrie return (S_ERROR); 1247d326b23bSrie } 12487c478bd9Sstevel@tonic-gate 12497c478bd9Sstevel@tonic-gate /* 1250d326b23bSrie * IE access model. 12517c478bd9Sstevel@tonic-gate */ 1252d326b23bSrie if (IS_TLS_IE(rtype)) { 1253d326b23bSrie if (ld_add_actrel(FLG_REL_STLS, 12547c478bd9Sstevel@tonic-gate rsp, ofl) == S_ERROR) 12557c478bd9Sstevel@tonic-gate return (S_ERROR); 1256d326b23bSrie 1257d326b23bSrie /* 1258d326b23bSrie * A non-pic shared object needs to adjust the 1259d326b23bSrie * active relocation (indntpoff). 1260d326b23bSrie */ 1261d326b23bSrie if (((flags & FLG_OF_EXEC) == 0) && 1262d326b23bSrie (rtype == R_386_TLS_IE)) { 1263d326b23bSrie rsp->rel_rtype = R_386_RELATIVE; 1264d326b23bSrie return (ld_add_outrel(NULL, rsp, ofl)); 1265d326b23bSrie } 1266d326b23bSrie return (1); 12677c478bd9Sstevel@tonic-gate } 12687c478bd9Sstevel@tonic-gate 12697c478bd9Sstevel@tonic-gate /* 1270d326b23bSrie * Fixups are required for other executable models. 12717c478bd9Sstevel@tonic-gate */ 12725aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 12737c478bd9Sstevel@tonic-gate rsp, ofl)); 12747c478bd9Sstevel@tonic-gate } 1275d326b23bSrie 12767c478bd9Sstevel@tonic-gate /* 1277d326b23bSrie * LE access model. 12787c478bd9Sstevel@tonic-gate */ 12797c478bd9Sstevel@tonic-gate if (IS_TLS_LE(rtype) || (rtype == R_386_TLS_LDO_32)) 12805aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 12817c478bd9Sstevel@tonic-gate 12825aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 12835aefb655Srie rsp, ofl)); 12847c478bd9Sstevel@tonic-gate } 12857c478bd9Sstevel@tonic-gate 12867c478bd9Sstevel@tonic-gate /* 1287d326b23bSrie * Building a shared object. 1288d326b23bSrie * 1289d326b23bSrie * Assign a GOT entry for a dynamic TLS reference. 12907c478bd9Sstevel@tonic-gate */ 12915aefb655Srie if (IS_TLS_LD(rtype) && ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 12927c478bd9Sstevel@tonic-gate GOT_REF_TLSLD, ofl, 0)) == 0)) { 1293d326b23bSrie 1294d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSLD, 1295d326b23bSrie FLG_REL_MTLS, rtype, R_386_TLS_DTPMOD32, 0) == S_ERROR) 12967c478bd9Sstevel@tonic-gate return (S_ERROR); 1297d326b23bSrie 12985aefb655Srie } else if (IS_TLS_GD(rtype) && 12995aefb655Srie ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), GOT_REF_TLSGD, 13005aefb655Srie ofl, 0)) == 0)) { 1301d326b23bSrie 1302d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSGD, 1303d326b23bSrie FLG_REL_DTLS, rtype, R_386_TLS_DTPMOD32, 1304d326b23bSrie R_386_TLS_DTPOFF32) == S_ERROR) 13057c478bd9Sstevel@tonic-gate return (S_ERROR); 13067c478bd9Sstevel@tonic-gate } 1307d326b23bSrie 13087c478bd9Sstevel@tonic-gate /* 13097c478bd9Sstevel@tonic-gate * For GD/LD TLS reference - TLS_{GD,LD}_CALL, this will eventually 1310d326b23bSrie * cause a call to __tls_get_addr(). Convert this relocation to that 1311d326b23bSrie * symbol now, and prepare for the PLT magic. 13127c478bd9Sstevel@tonic-gate */ 13137c478bd9Sstevel@tonic-gate if ((rtype == R_386_TLS_GD_PLT) || (rtype == R_386_TLS_LDM_PLT)) { 13147c478bd9Sstevel@tonic-gate Sym_desc * tlsgetsym; 13157c478bd9Sstevel@tonic-gate 13165aefb655Srie if ((tlsgetsym = ld_sym_add_u(MSG_ORIG(MSG_SYM_TLSGETADDR_UU), 13177c478bd9Sstevel@tonic-gate ofl)) == (Sym_desc *)S_ERROR) 13187c478bd9Sstevel@tonic-gate return (S_ERROR); 1319d326b23bSrie 13207c478bd9Sstevel@tonic-gate rsp->rel_sym = tlsgetsym; 13217c478bd9Sstevel@tonic-gate rsp->rel_sname = tlsgetsym->sd_name; 13227c478bd9Sstevel@tonic-gate rsp->rel_rtype = R_386_PLT32; 1323d326b23bSrie 13245aefb655Srie if (ld_reloc_plt(rsp, ofl) == S_ERROR) 13257c478bd9Sstevel@tonic-gate return (S_ERROR); 1326d326b23bSrie 13277c478bd9Sstevel@tonic-gate rsp->rel_sym = sdp; 13287c478bd9Sstevel@tonic-gate rsp->rel_sname = sdp->sd_name; 13297c478bd9Sstevel@tonic-gate rsp->rel_rtype = rtype; 13307c478bd9Sstevel@tonic-gate return (1); 13317c478bd9Sstevel@tonic-gate } 13327c478bd9Sstevel@tonic-gate 13337c478bd9Sstevel@tonic-gate if (IS_TLS_LD(rtype)) 13345aefb655Srie return (ld_add_actrel(FLG_REL_MTLS, rsp, ofl)); 13357c478bd9Sstevel@tonic-gate 13365aefb655Srie return (ld_add_actrel(FLG_REL_DTLS, rsp, ofl)); 13377c478bd9Sstevel@tonic-gate } 13387c478bd9Sstevel@tonic-gate 13397c478bd9Sstevel@tonic-gate /* ARGSUSED3 */ 13407c478bd9Sstevel@tonic-gate Gotndx * 13415aefb655Srie ld_find_gotndx(List * lst, Gotref gref, Ofl_desc * ofl, Rel_desc * rdesc) 13427c478bd9Sstevel@tonic-gate { 13437c478bd9Sstevel@tonic-gate Listnode * lnp; 13447c478bd9Sstevel@tonic-gate Gotndx * gnp; 13457c478bd9Sstevel@tonic-gate 13467c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSLD) && ofl->ofl_tlsldgotndx) 13477c478bd9Sstevel@tonic-gate return (ofl->ofl_tlsldgotndx); 13487c478bd9Sstevel@tonic-gate 13497c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(lst, lnp, gnp)) { 13507c478bd9Sstevel@tonic-gate if (gnp->gn_gotref == gref) 13517c478bd9Sstevel@tonic-gate return (gnp); 13527c478bd9Sstevel@tonic-gate } 13537c478bd9Sstevel@tonic-gate return ((Gotndx *)0); 13547c478bd9Sstevel@tonic-gate } 13557c478bd9Sstevel@tonic-gate 13567c478bd9Sstevel@tonic-gate Xword 13575aefb655Srie ld_calc_got_offset(Rel_desc * rdesc, Ofl_desc * ofl) 13587c478bd9Sstevel@tonic-gate { 13597c478bd9Sstevel@tonic-gate Os_desc *osp = ofl->ofl_osgot; 13607c478bd9Sstevel@tonic-gate Sym_desc *sdp = rdesc->rel_sym; 13617c478bd9Sstevel@tonic-gate Xword gotndx; 13627c478bd9Sstevel@tonic-gate Gotref gref; 13637c478bd9Sstevel@tonic-gate Gotndx *gnp; 13647c478bd9Sstevel@tonic-gate 13657c478bd9Sstevel@tonic-gate if (rdesc->rel_flags & FLG_REL_DTLS) 13667c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 13677c478bd9Sstevel@tonic-gate else if (rdesc->rel_flags & FLG_REL_MTLS) 13687c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 13697c478bd9Sstevel@tonic-gate else if (rdesc->rel_flags & FLG_REL_STLS) 13707c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 13717c478bd9Sstevel@tonic-gate else 13727c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 13737c478bd9Sstevel@tonic-gate 13745aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, ofl, 0); 13757c478bd9Sstevel@tonic-gate assert(gnp); 13767c478bd9Sstevel@tonic-gate 13777c478bd9Sstevel@tonic-gate gotndx = (Xword)gnp->gn_gotndx; 13787c478bd9Sstevel@tonic-gate 13797c478bd9Sstevel@tonic-gate if ((rdesc->rel_flags & FLG_REL_DTLS) && 13807c478bd9Sstevel@tonic-gate (rdesc->rel_rtype == R_386_TLS_DTPOFF32)) 13817c478bd9Sstevel@tonic-gate gotndx++; 13827c478bd9Sstevel@tonic-gate 13837c478bd9Sstevel@tonic-gate return ((Xword)(osp->os_shdr->sh_addr + (gotndx * M_GOT_ENTSIZE))); 13847c478bd9Sstevel@tonic-gate } 13857c478bd9Sstevel@tonic-gate 13867c478bd9Sstevel@tonic-gate 13877c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 13887c478bd9Sstevel@tonic-gate uintptr_t 1389d326b23bSrie ld_assign_got_ndx(List * lst, Gotndx * pgnp, Gotref gref, Ofl_desc * ofl, 13907c478bd9Sstevel@tonic-gate Rel_desc * rsp, Sym_desc * sdp) 13917c478bd9Sstevel@tonic-gate { 13927c478bd9Sstevel@tonic-gate Gotndx *gnp; 13937c478bd9Sstevel@tonic-gate uint_t gotents; 13947c478bd9Sstevel@tonic-gate 13957c478bd9Sstevel@tonic-gate if (pgnp) 13967c478bd9Sstevel@tonic-gate return (1); 13977c478bd9Sstevel@tonic-gate 13987c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSGD) || (gref == GOT_REF_TLSLD)) 13997c478bd9Sstevel@tonic-gate gotents = 2; 14007c478bd9Sstevel@tonic-gate else 14017c478bd9Sstevel@tonic-gate gotents = 1; 14027c478bd9Sstevel@tonic-gate 14037c478bd9Sstevel@tonic-gate if ((gnp = libld_calloc(sizeof (Gotndx), 1)) == 0) 14047c478bd9Sstevel@tonic-gate return (S_ERROR); 14057c478bd9Sstevel@tonic-gate gnp->gn_gotndx = ofl->ofl_gotcnt; 14067c478bd9Sstevel@tonic-gate gnp->gn_gotref = gref; 14077c478bd9Sstevel@tonic-gate 14087c478bd9Sstevel@tonic-gate ofl->ofl_gotcnt += gotents; 14097c478bd9Sstevel@tonic-gate 14107c478bd9Sstevel@tonic-gate if (gref == GOT_REF_TLSLD) { 14117c478bd9Sstevel@tonic-gate ofl->ofl_tlsldgotndx = gnp; 14127c478bd9Sstevel@tonic-gate return (1); 14137c478bd9Sstevel@tonic-gate } 14147c478bd9Sstevel@tonic-gate 14157c478bd9Sstevel@tonic-gate if (list_appendc(lst, (void *)gnp) == 0) 14167c478bd9Sstevel@tonic-gate return (S_ERROR); 14177c478bd9Sstevel@tonic-gate 14187c478bd9Sstevel@tonic-gate return (1); 14197c478bd9Sstevel@tonic-gate } 14207c478bd9Sstevel@tonic-gate 14217c478bd9Sstevel@tonic-gate void 14225aefb655Srie ld_assign_plt_ndx(Sym_desc * sdp, Ofl_desc *ofl) 14237c478bd9Sstevel@tonic-gate { 14247c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTndx = 1 + ofl->ofl_pltcnt++; 14257c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx = ofl->ofl_gotcnt++; 1426141040e8Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 14277c478bd9Sstevel@tonic-gate } 14287c478bd9Sstevel@tonic-gate 14297c478bd9Sstevel@tonic-gate /* 14307c478bd9Sstevel@tonic-gate * Initializes .got[0] with the _DYNAMIC symbol value. 14317c478bd9Sstevel@tonic-gate */ 14327c478bd9Sstevel@tonic-gate uintptr_t 1433d326b23bSrie ld_fillin_gotplt(Ofl_desc *ofl) 14347c478bd9Sstevel@tonic-gate { 1435d326b23bSrie Word flags = ofl->ofl_flags; 1436d326b23bSrie 14377c478bd9Sstevel@tonic-gate if (ofl->ofl_osgot) { 1438d326b23bSrie Sym_desc *sdp; 14397c478bd9Sstevel@tonic-gate 14405aefb655Srie if ((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_DYNAMIC_U), 14417c478bd9Sstevel@tonic-gate SYM_NOHASH, 0, ofl)) != NULL) { 1442d326b23bSrie uchar_t *genptr; 1443d326b23bSrie 1444d326b23bSrie genptr = ((uchar_t *)ofl->ofl_osgot->os_outdata->d_buf + 14457c478bd9Sstevel@tonic-gate (M_GOT_XDYNAMIC * M_GOT_ENTSIZE)); 14467c478bd9Sstevel@tonic-gate /* LINTED */ 14477c478bd9Sstevel@tonic-gate *(Word *)genptr = (Word)sdp->sd_sym->st_value; 14487c478bd9Sstevel@tonic-gate } 14497c478bd9Sstevel@tonic-gate } 14507c478bd9Sstevel@tonic-gate 14517c478bd9Sstevel@tonic-gate /* 14527c478bd9Sstevel@tonic-gate * Fill in the reserved slot in the procedure linkage table the first 14537c478bd9Sstevel@tonic-gate * entry is: 14547c478bd9Sstevel@tonic-gate * if (building a.out) { 14557c478bd9Sstevel@tonic-gate * PUSHL got[1] # the address of the link map entry 14567c478bd9Sstevel@tonic-gate * JMP * got[2] # the address of rtbinder 14577c478bd9Sstevel@tonic-gate * } else { 14587c478bd9Sstevel@tonic-gate * PUSHL got[1]@GOT(%ebx) # the address of the link map entry 14597c478bd9Sstevel@tonic-gate * JMP * got[2]@GOT(%ebx) # the address of rtbinder 14607c478bd9Sstevel@tonic-gate * } 14617c478bd9Sstevel@tonic-gate */ 1462d326b23bSrie if ((flags & FLG_OF_DYNAMIC) && ofl->ofl_osplt) { 1463b3fbe5e6Sseizo uchar_t *pltent; 14647c478bd9Sstevel@tonic-gate 1465b3fbe5e6Sseizo pltent = (uchar_t *)ofl->ofl_osplt->os_outdata->d_buf; 1466d326b23bSrie if (!(flags & FLG_OF_SHAROBJ)) { 14677c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 14687c478bd9Sstevel@tonic-gate pltent[1] = M_PUSHL_DISP; 14697c478bd9Sstevel@tonic-gate pltent += 2; 14707c478bd9Sstevel@tonic-gate /* LINTED */ 14717c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(ofl->ofl_osgot->os_shdr-> 14727c478bd9Sstevel@tonic-gate sh_addr + M_GOT_XLINKMAP * M_GOT_ENTSIZE); 14737c478bd9Sstevel@tonic-gate pltent += 4; 14747c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 14757c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_DISP_IND; 14767c478bd9Sstevel@tonic-gate pltent += 2; 14777c478bd9Sstevel@tonic-gate /* LINTED */ 14787c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(ofl->ofl_osgot->os_shdr-> 14797c478bd9Sstevel@tonic-gate sh_addr + M_GOT_XRTLD * M_GOT_ENTSIZE); 14807c478bd9Sstevel@tonic-gate } else { 14817c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 14827c478bd9Sstevel@tonic-gate pltent[1] = M_PUSHL_REG_DISP; 14837c478bd9Sstevel@tonic-gate pltent += 2; 14847c478bd9Sstevel@tonic-gate /* LINTED */ 14857c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(M_GOT_XLINKMAP * 14867c478bd9Sstevel@tonic-gate M_GOT_ENTSIZE); 14877c478bd9Sstevel@tonic-gate pltent += 4; 14887c478bd9Sstevel@tonic-gate pltent[0] = M_SPECIAL_INST; 14897c478bd9Sstevel@tonic-gate pltent[1] = M_JMP_REG_DISP_IND; 14907c478bd9Sstevel@tonic-gate pltent += 2; 14917c478bd9Sstevel@tonic-gate /* LINTED */ 14927c478bd9Sstevel@tonic-gate *(Word *)pltent = (Word)(M_GOT_XRTLD * 14937c478bd9Sstevel@tonic-gate M_GOT_ENTSIZE); 14947c478bd9Sstevel@tonic-gate } 14957c478bd9Sstevel@tonic-gate } 14967c478bd9Sstevel@tonic-gate return (1); 14977c478bd9Sstevel@tonic-gate } 1498