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 /* 23141040e8Srie * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24b3fbe5e6Sseizo * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #include <string.h> 297c478bd9Sstevel@tonic-gate #include <stdio.h> 307c478bd9Sstevel@tonic-gate #include <strings.h> 317c478bd9Sstevel@tonic-gate #include <sys/elf_amd64.h> 327c478bd9Sstevel@tonic-gate #include <debug.h> 337c478bd9Sstevel@tonic-gate #include <reloc.h> 345aefb655Srie #include "msg.h" 355aefb655Srie #include "_libld.h" 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate Word 385aefb655Srie ld_init_rel(Rel_desc *reld, void *reloc) 397c478bd9Sstevel@tonic-gate { 407c478bd9Sstevel@tonic-gate Rela * rel = (Rela *)reloc; 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate /* LINTED */ 437c478bd9Sstevel@tonic-gate reld->rel_rtype = (Word)ELF_R_TYPE(rel->r_info); 447c478bd9Sstevel@tonic-gate reld->rel_roffset = rel->r_offset; 457c478bd9Sstevel@tonic-gate reld->rel_raddend = rel->r_addend; 467c478bd9Sstevel@tonic-gate reld->rel_typedata = 0; 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate reld->rel_flags |= FLG_REL_RELA; 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate return ((Word)ELF_R_SYM(rel->r_info)); 517c478bd9Sstevel@tonic-gate } 527c478bd9Sstevel@tonic-gate 537c478bd9Sstevel@tonic-gate void 545aefb655Srie ld_mach_eflags(Ehdr *ehdr, Ofl_desc *ofl) 557c478bd9Sstevel@tonic-gate { 565aefb655Srie ofl->ofl_dehdr->e_flags |= ehdr->e_flags; 577c478bd9Sstevel@tonic-gate } 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate void 605aefb655Srie ld_mach_make_dynamic(Ofl_desc *ofl, size_t *cnt) 617c478bd9Sstevel@tonic-gate { 627c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) { 637c478bd9Sstevel@tonic-gate /* 647c478bd9Sstevel@tonic-gate * Create this entry if we are going to create a PLT table. 657c478bd9Sstevel@tonic-gate */ 667c478bd9Sstevel@tonic-gate if (ofl->ofl_pltcnt) 677c478bd9Sstevel@tonic-gate (*cnt)++; /* DT_PLTGOT */ 687c478bd9Sstevel@tonic-gate } 697c478bd9Sstevel@tonic-gate } 707c478bd9Sstevel@tonic-gate 717c478bd9Sstevel@tonic-gate void 725aefb655Srie ld_mach_update_odynamic(Ofl_desc *ofl, Dyn **dyn) 737c478bd9Sstevel@tonic-gate { 745aefb655Srie if (((ofl->ofl_flags & FLG_OF_RELOBJ) == 0) && ofl->ofl_pltcnt) { 755aefb655Srie (*dyn)->d_tag = DT_PLTGOT; 765aefb655Srie if (ofl->ofl_osgot) 775aefb655Srie (*dyn)->d_un.d_ptr = ofl->ofl_osgot->os_shdr->sh_addr; 785aefb655Srie else 795aefb655Srie (*dyn)->d_un.d_ptr = 0; 805aefb655Srie (*dyn)++; 817c478bd9Sstevel@tonic-gate } 827c478bd9Sstevel@tonic-gate } 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate Xword 855aefb655Srie ld_calc_plt_addr(Sym_desc *sdp, Ofl_desc *ofl) 867c478bd9Sstevel@tonic-gate { 877c478bd9Sstevel@tonic-gate Xword value; 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate value = (Xword)(ofl->ofl_osplt->os_shdr->sh_addr) + 907c478bd9Sstevel@tonic-gate M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * M_PLT_ENTSIZE); 917c478bd9Sstevel@tonic-gate return (value); 927c478bd9Sstevel@tonic-gate } 937c478bd9Sstevel@tonic-gate 947c478bd9Sstevel@tonic-gate /* 957c478bd9Sstevel@tonic-gate * Build a single plt entry - code is: 967c478bd9Sstevel@tonic-gate * JMP *name1@GOTPCREL(%rip) 977c478bd9Sstevel@tonic-gate * PUSHL $index 987c478bd9Sstevel@tonic-gate * JMP .PLT0 997c478bd9Sstevel@tonic-gate */ 100b3fbe5e6Sseizo static uchar_t pltn_entry[M_PLT_ENTSIZE] = { 1017c478bd9Sstevel@tonic-gate /* 0x00 jmpq *name1@GOTPCREL(%rip) */ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 1027c478bd9Sstevel@tonic-gate /* 0x06 pushq $index */ 0x68, 0x00, 0x00, 0x00, 0x00, 1037c478bd9Sstevel@tonic-gate /* 0x0b jmpq .plt0(%rip) */ 0xe9, 0x00, 0x00, 0x00, 0x00 1047c478bd9Sstevel@tonic-gate /* 0x10 */ 1057c478bd9Sstevel@tonic-gate }; 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate static uintptr_t 1087c478bd9Sstevel@tonic-gate plt_entry(Ofl_desc * ofl, Sym_desc * sdp) 1097c478bd9Sstevel@tonic-gate { 110b3fbe5e6Sseizo uchar_t *plt0, *pltent, *gotent; 1117c478bd9Sstevel@tonic-gate Sword plt_off; 1127c478bd9Sstevel@tonic-gate Word got_off; 1137c478bd9Sstevel@tonic-gate Xword val1; 1147c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 1157c478bd9Sstevel@tonic-gate Word dtflags1 = ofl->ofl_dtflags_1; 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 plt0 = (uchar_t *)(ofl->ofl_osplt->os_outdata->d_buf); 1217c478bd9Sstevel@tonic-gate pltent = plt0 + plt_off; 122b3fbe5e6Sseizo gotent = (uchar_t *)(ofl->ofl_osgot->os_outdata->d_buf) + got_off; 1237c478bd9Sstevel@tonic-gate 1247c478bd9Sstevel@tonic-gate bcopy(pltn_entry, pltent, sizeof (pltn_entry)); 1257c478bd9Sstevel@tonic-gate /* 1267c478bd9Sstevel@tonic-gate * Fill in the got entry with the address of the next instruction. 1277c478bd9Sstevel@tonic-gate */ 1287c478bd9Sstevel@tonic-gate /* LINTED */ 129b3fbe5e6Sseizo *(Word *)gotent = ofl->ofl_osplt->os_shdr->sh_addr + plt_off + 130b3fbe5e6Sseizo M_PLT_INSSIZE; 1317c478bd9Sstevel@tonic-gate 1327c478bd9Sstevel@tonic-gate /* 1337c478bd9Sstevel@tonic-gate * patchup: 1347c478bd9Sstevel@tonic-gate * jmpq *name1@gotpcrel(%rip) 1357c478bd9Sstevel@tonic-gate * 1367c478bd9Sstevel@tonic-gate * NOTE: 0x06 represents next instruction. 1377c478bd9Sstevel@tonic-gate */ 1387c478bd9Sstevel@tonic-gate val1 = (ofl->ofl_osgot->os_shdr->sh_addr + got_off) - 1397c478bd9Sstevel@tonic-gate (ofl->ofl_osplt->os_shdr->sh_addr + plt_off) - 0x06; 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate /* 1427c478bd9Sstevel@tonic-gate * If '-z noreloc' is specified - skip the do_reloc 1437c478bd9Sstevel@tonic-gate * stage. 1447c478bd9Sstevel@tonic-gate */ 1457c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_RELOBJ) || 1467c478bd9Sstevel@tonic-gate !(dtflags1 & DF_1_NORELOC)) { 1477c478bd9Sstevel@tonic-gate if (do_reloc(R_AMD64_GOTPCREL, &pltent[0x02], 1487c478bd9Sstevel@tonic-gate &val1, MSG_ORIG(MSG_SYM_PLTENT), 1495aefb655Srie MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) { 1505aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 1515aefb655Srie MSG_INTL(MSG_PLT_PLTNFAIL), sdp->sd_aux->sa_PLTndx, 1525aefb655Srie demangle(sdp->sd_name)); 1537c478bd9Sstevel@tonic-gate return (S_ERROR); 1547c478bd9Sstevel@tonic-gate } 1557c478bd9Sstevel@tonic-gate } 1567c478bd9Sstevel@tonic-gate 1577c478bd9Sstevel@tonic-gate /* 1587c478bd9Sstevel@tonic-gate * patchup: 1597c478bd9Sstevel@tonic-gate * pushq $pltndx 1607c478bd9Sstevel@tonic-gate */ 1617c478bd9Sstevel@tonic-gate val1 = (Xword)(sdp->sd_aux->sa_PLTndx - 1); 1627c478bd9Sstevel@tonic-gate /* 1637c478bd9Sstevel@tonic-gate * If '-z noreloc' is specified - skip the do_reloc 1647c478bd9Sstevel@tonic-gate * stage. 1657c478bd9Sstevel@tonic-gate */ 1667c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_RELOBJ) || 1677c478bd9Sstevel@tonic-gate !(dtflags1 & DF_1_NORELOC)) { 1687c478bd9Sstevel@tonic-gate if (do_reloc(R_AMD64_32, &pltent[0x07], 1697c478bd9Sstevel@tonic-gate &val1, MSG_ORIG(MSG_SYM_PLTENT), 1705aefb655Srie MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) { 1715aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 1725aefb655Srie MSG_INTL(MSG_PLT_PLTNFAIL), sdp->sd_aux->sa_PLTndx, 1735aefb655Srie demangle(sdp->sd_name)); 1747c478bd9Sstevel@tonic-gate return (S_ERROR); 1757c478bd9Sstevel@tonic-gate } 1767c478bd9Sstevel@tonic-gate } 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate /* 1797c478bd9Sstevel@tonic-gate * patchup: 1807c478bd9Sstevel@tonic-gate * jmpq .plt0(%rip) 181b3fbe5e6Sseizo * NOTE: 0x10 represents next instruction. The rather complex series 182b3fbe5e6Sseizo * of casts is necessary to sign extend an offset into a 64-bit value 183b3fbe5e6Sseizo * while satisfying various compiler error checks. Handle with care. 1847c478bd9Sstevel@tonic-gate */ 185b3fbe5e6Sseizo val1 = (Xword)((intptr_t)((uintptr_t)plt0 - 186b3fbe5e6Sseizo (uintptr_t)(&pltent[0x10]))); 187b3fbe5e6Sseizo 1887c478bd9Sstevel@tonic-gate /* 1897c478bd9Sstevel@tonic-gate * If '-z noreloc' is specified - skip the do_reloc 1907c478bd9Sstevel@tonic-gate * stage. 1917c478bd9Sstevel@tonic-gate */ 1927c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_RELOBJ) || 1937c478bd9Sstevel@tonic-gate !(dtflags1 & DF_1_NORELOC)) { 1947c478bd9Sstevel@tonic-gate if (do_reloc(R_AMD64_PC32, &pltent[0x0c], 1957c478bd9Sstevel@tonic-gate &val1, MSG_ORIG(MSG_SYM_PLTENT), 1965aefb655Srie MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) { 1975aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 1985aefb655Srie MSG_INTL(MSG_PLT_PLTNFAIL), sdp->sd_aux->sa_PLTndx, 1995aefb655Srie demangle(sdp->sd_name)); 2007c478bd9Sstevel@tonic-gate return (S_ERROR); 2017c478bd9Sstevel@tonic-gate } 2027c478bd9Sstevel@tonic-gate } 2037c478bd9Sstevel@tonic-gate return (1); 2047c478bd9Sstevel@tonic-gate } 2057c478bd9Sstevel@tonic-gate 2067c478bd9Sstevel@tonic-gate uintptr_t 2075aefb655Srie ld_perform_outreloc(Rel_desc * orsp, Ofl_desc * ofl) 2087c478bd9Sstevel@tonic-gate { 2097c478bd9Sstevel@tonic-gate Os_desc * relosp, * osp = 0; 2107c478bd9Sstevel@tonic-gate Word ndx; 2117c478bd9Sstevel@tonic-gate Xword roffset, value; 2127c478bd9Sstevel@tonic-gate Sxword raddend; 2137c478bd9Sstevel@tonic-gate Rela rea; 2147c478bd9Sstevel@tonic-gate char *relbits; 2157c478bd9Sstevel@tonic-gate Sym_desc * sdp, * psym = (Sym_desc *)0; 2167c478bd9Sstevel@tonic-gate int sectmoved = 0; 2177c478bd9Sstevel@tonic-gate 2187c478bd9Sstevel@tonic-gate raddend = orsp->rel_raddend; 2197c478bd9Sstevel@tonic-gate sdp = orsp->rel_sym; 2207c478bd9Sstevel@tonic-gate 2217c478bd9Sstevel@tonic-gate /* 2227c478bd9Sstevel@tonic-gate * If the section this relocation is against has been discarded 2237c478bd9Sstevel@tonic-gate * (-zignore), then also discard (skip) the relocation itself. 2247c478bd9Sstevel@tonic-gate */ 2257c478bd9Sstevel@tonic-gate if (orsp->rel_isdesc && ((orsp->rel_flags & 2267c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | FLG_REL_PLT | FLG_REL_NOINFO)) == 0) && 2277c478bd9Sstevel@tonic-gate (orsp->rel_isdesc->is_flags & FLG_IS_DISCARD)) { 2285aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, orsp)); 2297c478bd9Sstevel@tonic-gate return (1); 2307c478bd9Sstevel@tonic-gate } 2317c478bd9Sstevel@tonic-gate 2327c478bd9Sstevel@tonic-gate /* 2337c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or expanded move 2347c478bd9Sstevel@tonic-gate * table, adjust the relocation entries. 2357c478bd9Sstevel@tonic-gate */ 2367c478bd9Sstevel@tonic-gate if (orsp->rel_move) 2375aefb655Srie ld_adj_movereloc(ofl, orsp); 2387c478bd9Sstevel@tonic-gate 2397c478bd9Sstevel@tonic-gate /* 2407c478bd9Sstevel@tonic-gate * If this is a relocation against a section then we need to adjust the 2417c478bd9Sstevel@tonic-gate * raddend field to compensate for the new position of the input section 2427c478bd9Sstevel@tonic-gate * within the new output section. 2437c478bd9Sstevel@tonic-gate */ 2447c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) { 2457c478bd9Sstevel@tonic-gate if (ofl->ofl_parsym.head && 2467c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 2477c478bd9Sstevel@tonic-gate /* LINTED */ 2485aefb655Srie (psym = ld_am_I_partial(orsp, orsp->rel_raddend))) { 2495aefb655Srie DBG_CALL(Dbg_move_outsctadj(ofl->ofl_lml, psym)); 2507c478bd9Sstevel@tonic-gate sectmoved = 1; 2517c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_RELOBJ) 2527c478bd9Sstevel@tonic-gate raddend = psym->sd_sym->st_value; 2537c478bd9Sstevel@tonic-gate else 2547c478bd9Sstevel@tonic-gate raddend = psym->sd_sym->st_value - 2557c478bd9Sstevel@tonic-gate psym->sd_isc->is_osdesc->os_shdr->sh_addr; 2567c478bd9Sstevel@tonic-gate /* LINTED */ 2577c478bd9Sstevel@tonic-gate raddend += (Off)_elf_getxoff(psym->sd_isc->is_indata); 2587c478bd9Sstevel@tonic-gate if (psym->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 2597c478bd9Sstevel@tonic-gate raddend += 2607c478bd9Sstevel@tonic-gate psym->sd_isc->is_osdesc->os_shdr->sh_addr; 2617c478bd9Sstevel@tonic-gate } else { 2627c478bd9Sstevel@tonic-gate /* LINTED */ 2637c478bd9Sstevel@tonic-gate raddend += (Off)_elf_getxoff(sdp->sd_isc->is_indata); 2647c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 2657c478bd9Sstevel@tonic-gate raddend += 2667c478bd9Sstevel@tonic-gate sdp->sd_isc->is_osdesc->os_shdr->sh_addr; 2677c478bd9Sstevel@tonic-gate } 2687c478bd9Sstevel@tonic-gate } 2697c478bd9Sstevel@tonic-gate 2707c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 2717c478bd9Sstevel@tonic-gate 2727c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_GOT) { 2737c478bd9Sstevel@tonic-gate /* 2747c478bd9Sstevel@tonic-gate * Note: for GOT relative relocations on amd64 2757c478bd9Sstevel@tonic-gate * we discard the addend. It was relevant 2767c478bd9Sstevel@tonic-gate * to the reference - not to the data item 2777c478bd9Sstevel@tonic-gate * being referenced (ie: that -4 thing). 2787c478bd9Sstevel@tonic-gate */ 2797c478bd9Sstevel@tonic-gate raddend = 0; 2807c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 2815aefb655Srie roffset = ld_calc_got_offset(orsp, ofl); 2825aefb655Srie 2837c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_PLT) { 2847c478bd9Sstevel@tonic-gate /* 2857c478bd9Sstevel@tonic-gate * Note that relocations for PLT's actually 2867c478bd9Sstevel@tonic-gate * cause a relocation againt the GOT. 2877c478bd9Sstevel@tonic-gate */ 2887c478bd9Sstevel@tonic-gate osp = ofl->ofl_osplt; 2897c478bd9Sstevel@tonic-gate roffset = (ofl->ofl_osgot->os_shdr->sh_addr) + 2907c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 2917c478bd9Sstevel@tonic-gate raddend = 0; 2927c478bd9Sstevel@tonic-gate if (plt_entry(ofl, sdp) == S_ERROR) 2937c478bd9Sstevel@tonic-gate return (S_ERROR); 2947c478bd9Sstevel@tonic-gate 2957c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_BSS) { 2967c478bd9Sstevel@tonic-gate /* 2977c478bd9Sstevel@tonic-gate * This must be a R_AMD64_COPY. For these set the roffset to 2987c478bd9Sstevel@tonic-gate * point to the new symbols location. 2997c478bd9Sstevel@tonic-gate */ 3007c478bd9Sstevel@tonic-gate osp = ofl->ofl_isbss->is_osdesc; 3017c478bd9Sstevel@tonic-gate roffset = value; 3027c478bd9Sstevel@tonic-gate 3037c478bd9Sstevel@tonic-gate /* 3047c478bd9Sstevel@tonic-gate * The raddend doesn't mean anything in a R_SPARC_COPY 3057c478bd9Sstevel@tonic-gate * relocation. Null it out because it can confuse people. 3067c478bd9Sstevel@tonic-gate */ 3077c478bd9Sstevel@tonic-gate raddend = 0; 3087c478bd9Sstevel@tonic-gate } else { 3097c478bd9Sstevel@tonic-gate osp = orsp->rel_osdesc; 3107c478bd9Sstevel@tonic-gate 3117c478bd9Sstevel@tonic-gate /* 3127c478bd9Sstevel@tonic-gate * Calculate virtual offset of reference point; equals offset 3137c478bd9Sstevel@tonic-gate * into section + vaddr of section for loadable sections, or 3147c478bd9Sstevel@tonic-gate * offset plus section displacement for nonloadable sections. 3157c478bd9Sstevel@tonic-gate */ 3167c478bd9Sstevel@tonic-gate roffset = orsp->rel_roffset + 3177c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(orsp->rel_isdesc->is_indata); 3187c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) 3197c478bd9Sstevel@tonic-gate roffset += orsp->rel_isdesc->is_osdesc-> 3207c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 3217c478bd9Sstevel@tonic-gate } 3227c478bd9Sstevel@tonic-gate 3237c478bd9Sstevel@tonic-gate if ((osp == 0) || ((relosp = osp->os_relosdesc) == 0)) 3247c478bd9Sstevel@tonic-gate relosp = ofl->ofl_osrel; 3257c478bd9Sstevel@tonic-gate 3267c478bd9Sstevel@tonic-gate /* 3277c478bd9Sstevel@tonic-gate * Assign the symbols index for the output relocation. If the 3287c478bd9Sstevel@tonic-gate * relocation refers to a SECTION symbol then it's index is based upon 3297c478bd9Sstevel@tonic-gate * the output sections symbols index. Otherwise the index can be 3307c478bd9Sstevel@tonic-gate * derived from the symbols index itself. 3317c478bd9Sstevel@tonic-gate */ 3327c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_AMD64_RELATIVE) 3337c478bd9Sstevel@tonic-gate ndx = STN_UNDEF; 3347c478bd9Sstevel@tonic-gate else if ((orsp->rel_flags & FLG_REL_SCNNDX) || 3357c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION)) { 3367c478bd9Sstevel@tonic-gate if (sectmoved == 0) { 3377c478bd9Sstevel@tonic-gate /* 3387c478bd9Sstevel@tonic-gate * Check for a null input section. This can 3397c478bd9Sstevel@tonic-gate * occur if this relocation references a symbol 3407c478bd9Sstevel@tonic-gate * generated by sym_add_sym(). 3417c478bd9Sstevel@tonic-gate */ 3427c478bd9Sstevel@tonic-gate if ((sdp->sd_isc != 0) && 3437c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_osdesc != 0)) 3447c478bd9Sstevel@tonic-gate ndx = sdp->sd_isc->is_osdesc->os_scnsymndx; 3457c478bd9Sstevel@tonic-gate else 3467c478bd9Sstevel@tonic-gate ndx = sdp->sd_shndx; 3477c478bd9Sstevel@tonic-gate } else 3487c478bd9Sstevel@tonic-gate ndx = ofl->ofl_sunwdata1ndx; 3497c478bd9Sstevel@tonic-gate } else 3507c478bd9Sstevel@tonic-gate ndx = sdp->sd_symndx; 3517c478bd9Sstevel@tonic-gate 3527c478bd9Sstevel@tonic-gate /* 3537c478bd9Sstevel@tonic-gate * Add the symbols 'value' to the addend field. 3547c478bd9Sstevel@tonic-gate */ 3557c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_ADVAL) 3567c478bd9Sstevel@tonic-gate raddend += value; 3577c478bd9Sstevel@tonic-gate 3587c478bd9Sstevel@tonic-gate /* 3597010c12aSrie * The addend field for R_AMD64_DTPMOD64 means nothing. The addend 3607010c12aSrie * is propagated in the corresponding R_AMD64_DTPOFF64 relocation. 3617c478bd9Sstevel@tonic-gate */ 3627c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_AMD64_DTPMOD64) 3637c478bd9Sstevel@tonic-gate raddend = 0; 3647c478bd9Sstevel@tonic-gate 3657c478bd9Sstevel@tonic-gate relbits = (char *)relosp->os_outdata->d_buf; 3667c478bd9Sstevel@tonic-gate 3677c478bd9Sstevel@tonic-gate rea.r_info = ELF_R_INFO(ndx, orsp->rel_rtype); 3687c478bd9Sstevel@tonic-gate rea.r_offset = roffset; 3697c478bd9Sstevel@tonic-gate rea.r_addend = raddend; 3705aefb655Srie DBG_CALL(Dbg_reloc_out(ofl, ELF_DBG_LD, SHT_RELA, &rea, relosp->os_name, 3715aefb655Srie orsp->rel_sname)); 3727c478bd9Sstevel@tonic-gate 3737c478bd9Sstevel@tonic-gate /* 3747c478bd9Sstevel@tonic-gate * Assert we haven't walked off the end of our relocation table. 3757c478bd9Sstevel@tonic-gate */ 3767c478bd9Sstevel@tonic-gate assert(relosp->os_szoutrels <= relosp->os_shdr->sh_size); 3777c478bd9Sstevel@tonic-gate 3787c478bd9Sstevel@tonic-gate (void) memcpy((relbits + relosp->os_szoutrels), 3797c478bd9Sstevel@tonic-gate (char *)&rea, sizeof (Rela)); 3807c478bd9Sstevel@tonic-gate relosp->os_szoutrels += (Xword)sizeof (Rela); 3817c478bd9Sstevel@tonic-gate 3827c478bd9Sstevel@tonic-gate /* 3837c478bd9Sstevel@tonic-gate * Determine if this relocation is against a non-writable, allocatable 3847c478bd9Sstevel@tonic-gate * section. If so we may need to provide a text relocation diagnostic. 3857c478bd9Sstevel@tonic-gate * Note that relocations against the .plt (R_AMD64_JUMP_SLOT) actually 3867c478bd9Sstevel@tonic-gate * result in modifications to the .got. 3877c478bd9Sstevel@tonic-gate */ 3887c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_AMD64_JUMP_SLOT) 3897c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 3907c478bd9Sstevel@tonic-gate 3915aefb655Srie ld_reloc_remain_entry(orsp, osp, ofl); 3927c478bd9Sstevel@tonic-gate return (1); 3937c478bd9Sstevel@tonic-gate } 3947c478bd9Sstevel@tonic-gate 3957c478bd9Sstevel@tonic-gate /* 3967c478bd9Sstevel@tonic-gate * amd64 Instructions for TLS processing 3977c478bd9Sstevel@tonic-gate */ 398b3fbe5e6Sseizo static uchar_t tlsinstr_gd_ie[] = { 3997c478bd9Sstevel@tonic-gate /* 4007c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 4017c478bd9Sstevel@tonic-gate */ 4027c478bd9Sstevel@tonic-gate 0x64, 0x48, 0x8b, 0x04, 0x25, 4037c478bd9Sstevel@tonic-gate 0x00, 0x00, 0x00, 0x00, 4047c478bd9Sstevel@tonic-gate /* 4057c478bd9Sstevel@tonic-gate * 0x09 addq x@gottpoff(%rip), %rax 4067c478bd9Sstevel@tonic-gate */ 4077c478bd9Sstevel@tonic-gate 0x48, 0x03, 0x05, 0x00, 0x00, 4087c478bd9Sstevel@tonic-gate 0x00, 0x00 4097c478bd9Sstevel@tonic-gate }; 4107c478bd9Sstevel@tonic-gate 411b3fbe5e6Sseizo static uchar_t tlsinstr_gd_le[] = { 4127c478bd9Sstevel@tonic-gate /* 4137c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 4147c478bd9Sstevel@tonic-gate */ 4157c478bd9Sstevel@tonic-gate 0x64, 0x48, 0x8b, 0x04, 0x25, 4167c478bd9Sstevel@tonic-gate 0x00, 0x00, 0x00, 0x00, 4177c478bd9Sstevel@tonic-gate /* 4187c478bd9Sstevel@tonic-gate * 0x09 leaq x@gottpoff(%rip), %rax 4197c478bd9Sstevel@tonic-gate */ 4207c478bd9Sstevel@tonic-gate 0x48, 0x8d, 0x80, 0x00, 0x00, 4217c478bd9Sstevel@tonic-gate 0x00, 0x00 4227c478bd9Sstevel@tonic-gate }; 4237c478bd9Sstevel@tonic-gate 424b3fbe5e6Sseizo static uchar_t tlsinstr_ld_le[] = { 4257c478bd9Sstevel@tonic-gate /* 4267c478bd9Sstevel@tonic-gate * .byte 0x66 4277c478bd9Sstevel@tonic-gate */ 4287c478bd9Sstevel@tonic-gate 0x66, 4297c478bd9Sstevel@tonic-gate /* 4307c478bd9Sstevel@tonic-gate * .byte 0x66 4317c478bd9Sstevel@tonic-gate */ 4327c478bd9Sstevel@tonic-gate 0x66, 4337c478bd9Sstevel@tonic-gate /* 4347c478bd9Sstevel@tonic-gate * .byte 0x66 4357c478bd9Sstevel@tonic-gate */ 4367c478bd9Sstevel@tonic-gate 0x66, 4377c478bd9Sstevel@tonic-gate /* 4387c478bd9Sstevel@tonic-gate * movq %fs:0, %rax 4397c478bd9Sstevel@tonic-gate */ 4407c478bd9Sstevel@tonic-gate 0x64, 0x48, 0x8b, 0x04, 0x25, 4417c478bd9Sstevel@tonic-gate 0x00, 0x00, 0x00, 0x00 4427c478bd9Sstevel@tonic-gate }; 4437c478bd9Sstevel@tonic-gate 4447c478bd9Sstevel@tonic-gate 4455aefb655Srie static Fixupret 4465aefb655Srie tls_fixups(Ofl_desc *ofl, Rel_desc *arsp) 4477c478bd9Sstevel@tonic-gate { 4487c478bd9Sstevel@tonic-gate Sym_desc *sdp = arsp->rel_sym; 4497c478bd9Sstevel@tonic-gate Word rtype = arsp->rel_rtype; 450b3fbe5e6Sseizo uchar_t *offset; 4517c478bd9Sstevel@tonic-gate 452b3fbe5e6Sseizo offset = (uchar_t *)((uintptr_t)arsp->rel_roffset + 453b3fbe5e6Sseizo (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) + 454b3fbe5e6Sseizo (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf); 4557c478bd9Sstevel@tonic-gate 4567c478bd9Sstevel@tonic-gate if (sdp->sd_ref == REF_DYN_NEED) { 4577c478bd9Sstevel@tonic-gate /* 4587c478bd9Sstevel@tonic-gate * IE reference model 4597c478bd9Sstevel@tonic-gate */ 4607c478bd9Sstevel@tonic-gate switch (rtype) { 4617c478bd9Sstevel@tonic-gate case R_AMD64_TLSGD: 4627c478bd9Sstevel@tonic-gate /* 4637c478bd9Sstevel@tonic-gate * GD -> IE 4647c478bd9Sstevel@tonic-gate * 4657c478bd9Sstevel@tonic-gate * Transition: 4667c478bd9Sstevel@tonic-gate * 0x00 .byte 0x66 4677c478bd9Sstevel@tonic-gate * 0x01 leaq x@tlsgd(%rip), %rdi 4687c478bd9Sstevel@tonic-gate * 0x08 .word 0x6666 4697c478bd9Sstevel@tonic-gate * 0x0a rex64 4707c478bd9Sstevel@tonic-gate * 0x0b call __tls_get_addr@plt 4717c478bd9Sstevel@tonic-gate * 0x10 4727c478bd9Sstevel@tonic-gate * To: 4737c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 4747c478bd9Sstevel@tonic-gate * 0x09 addq x@gottpoff(%rip), %rax 4757c478bd9Sstevel@tonic-gate * 0x10 4767c478bd9Sstevel@tonic-gate */ 4775aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 478*051d39bbSrie R_AMD64_GOTTPOFF, arsp)); 4797c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_GOTTPOFF; 4807c478bd9Sstevel@tonic-gate arsp->rel_roffset += 8; 4817c478bd9Sstevel@tonic-gate arsp->rel_raddend = (Sxword)-4; 4825aefb655Srie 4837c478bd9Sstevel@tonic-gate /* 484*051d39bbSrie * Adjust 'offset' to beginning of instruction 4857c478bd9Sstevel@tonic-gate * sequence. 4867c478bd9Sstevel@tonic-gate */ 4877c478bd9Sstevel@tonic-gate offset -= 4; 4887c478bd9Sstevel@tonic-gate (void) memcpy(offset, tlsinstr_gd_ie, 4895aefb655Srie sizeof (tlsinstr_gd_ie)); 4907c478bd9Sstevel@tonic-gate return (FIX_RELOC); 4915aefb655Srie 4927c478bd9Sstevel@tonic-gate case R_AMD64_PLT32: 4937c478bd9Sstevel@tonic-gate /* 494*051d39bbSrie * Fixup done via the TLS_GD relocation. 4957c478bd9Sstevel@tonic-gate */ 4965aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 497*051d39bbSrie R_AMD64_NONE, arsp)); 4987c478bd9Sstevel@tonic-gate return (FIX_DONE); 4997c478bd9Sstevel@tonic-gate } 5007c478bd9Sstevel@tonic-gate } 5017c478bd9Sstevel@tonic-gate 5027c478bd9Sstevel@tonic-gate /* 5037c478bd9Sstevel@tonic-gate * LE reference model 5047c478bd9Sstevel@tonic-gate */ 5057c478bd9Sstevel@tonic-gate switch (rtype) { 5067c478bd9Sstevel@tonic-gate case R_AMD64_TLSGD: 5077c478bd9Sstevel@tonic-gate /* 5087c478bd9Sstevel@tonic-gate * GD -> LE 5097c478bd9Sstevel@tonic-gate * 5107c478bd9Sstevel@tonic-gate * Transition: 5117c478bd9Sstevel@tonic-gate * 0x00 .byte 0x66 5127c478bd9Sstevel@tonic-gate * 0x01 leaq x@tlsgd(%rip), %rdi 5137c478bd9Sstevel@tonic-gate * 0x08 .word 0x6666 5147c478bd9Sstevel@tonic-gate * 0x0a rex64 5157c478bd9Sstevel@tonic-gate * 0x0b call __tls_get_addr@plt 5167c478bd9Sstevel@tonic-gate * 0x10 5177c478bd9Sstevel@tonic-gate * To: 5187c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 5197c478bd9Sstevel@tonic-gate * 0x09 leaq x@tpoff(%rax), %rax 5207c478bd9Sstevel@tonic-gate * 0x10 5217c478bd9Sstevel@tonic-gate */ 5225aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 523*051d39bbSrie R_AMD64_TPOFF32, arsp)); 5247c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_TPOFF32; 5257c478bd9Sstevel@tonic-gate arsp->rel_roffset += 8; 5267c478bd9Sstevel@tonic-gate arsp->rel_raddend = 0; 5275aefb655Srie 5287c478bd9Sstevel@tonic-gate /* 529*051d39bbSrie * Adjust 'offset' to beginning of instruction sequence. 5307c478bd9Sstevel@tonic-gate */ 5317c478bd9Sstevel@tonic-gate offset -= 4; 5325aefb655Srie (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); 5337c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5345aefb655Srie 5357c478bd9Sstevel@tonic-gate case R_AMD64_GOTTPOFF: 5367c478bd9Sstevel@tonic-gate /* 5377c478bd9Sstevel@tonic-gate * IE -> LE 5387c478bd9Sstevel@tonic-gate * 5397c478bd9Sstevel@tonic-gate * Transition: 5407c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 5417c478bd9Sstevel@tonic-gate * 0x09 addq x@gottopoff(%rip), %rax 5427c478bd9Sstevel@tonic-gate * 0x10 5437c478bd9Sstevel@tonic-gate * To: 5447c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 5457c478bd9Sstevel@tonic-gate * 0x09 leaq x@tpoff(%rax), %rax 5467c478bd9Sstevel@tonic-gate * 0x10 5477c478bd9Sstevel@tonic-gate */ 548*051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 549*051d39bbSrie R_AMD64_TPOFF32, arsp)); 5507c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_TPOFF32; 5517c478bd9Sstevel@tonic-gate arsp->rel_raddend = 0; 5525aefb655Srie 5537c478bd9Sstevel@tonic-gate /* 554*051d39bbSrie * Adjust 'offset' to beginning of instruction sequence. 5557c478bd9Sstevel@tonic-gate */ 5567c478bd9Sstevel@tonic-gate offset -= 12; 5575aefb655Srie 5587c478bd9Sstevel@tonic-gate /* 559*051d39bbSrie * Same code sequence used in the GD -> LE transition. 5607c478bd9Sstevel@tonic-gate */ 5615aefb655Srie (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); 5627c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5635aefb655Srie 5647c478bd9Sstevel@tonic-gate case R_AMD64_TLSLD: 5657c478bd9Sstevel@tonic-gate /* 5667c478bd9Sstevel@tonic-gate * LD -> LE 5677c478bd9Sstevel@tonic-gate * 5687c478bd9Sstevel@tonic-gate * Transition 5697c478bd9Sstevel@tonic-gate * 0x00 leaq x1@tlsgd(%rip), %rdi 5707c478bd9Sstevel@tonic-gate * 0x07 call __tls_get_addr@plt 5717c478bd9Sstevel@tonic-gate * 0x0c 5727c478bd9Sstevel@tonic-gate * To: 5737c478bd9Sstevel@tonic-gate * 0x00 .byte 0x66 5747c478bd9Sstevel@tonic-gate * 0x01 .byte 0x66 5757c478bd9Sstevel@tonic-gate * 0x02 .byte 0x66 5767c478bd9Sstevel@tonic-gate * 0x03 movq %fs:0, %rax 5777c478bd9Sstevel@tonic-gate */ 578*051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 579*051d39bbSrie R_AMD64_NONE, arsp)); 5807c478bd9Sstevel@tonic-gate offset -= 3; 5815aefb655Srie (void) memcpy(offset, tlsinstr_ld_le, sizeof (tlsinstr_ld_le)); 5827c478bd9Sstevel@tonic-gate return (FIX_DONE); 5835aefb655Srie 5847c478bd9Sstevel@tonic-gate case R_AMD64_DTPOFF32: 5857c478bd9Sstevel@tonic-gate /* 5867c478bd9Sstevel@tonic-gate * LD->LE 5877c478bd9Sstevel@tonic-gate * 5887c478bd9Sstevel@tonic-gate * Transition: 5897c478bd9Sstevel@tonic-gate * 0x00 leaq x1@dtpoff(%rax), %rcx 5907c478bd9Sstevel@tonic-gate * To: 5917c478bd9Sstevel@tonic-gate * 0x00 leaq x1@tpoff(%rax), %rcx 5927c478bd9Sstevel@tonic-gate */ 593*051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 594*051d39bbSrie R_AMD64_TPOFF32, arsp)); 5957c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_TPOFF32; 5967c478bd9Sstevel@tonic-gate arsp->rel_raddend = 0; 5977c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5987c478bd9Sstevel@tonic-gate } 5997c478bd9Sstevel@tonic-gate 6007c478bd9Sstevel@tonic-gate return (FIX_RELOC); 6017c478bd9Sstevel@tonic-gate } 6027c478bd9Sstevel@tonic-gate 6037c478bd9Sstevel@tonic-gate uintptr_t 6045aefb655Srie ld_do_activerelocs(Ofl_desc *ofl) 6057c478bd9Sstevel@tonic-gate { 606141040e8Srie Rel_desc *arsp; 607141040e8Srie Rel_cache *rcp; 608141040e8Srie Listnode *lnp; 6097c478bd9Sstevel@tonic-gate uintptr_t return_code = 1; 6107c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 6117c478bd9Sstevel@tonic-gate Word dtflags1 = ofl->ofl_dtflags_1; 6127c478bd9Sstevel@tonic-gate 6137010c12aSrie if (ofl->ofl_actrels.head) 6147010c12aSrie DBG_CALL(Dbg_reloc_doact_title(ofl->ofl_lml)); 6157010c12aSrie 6167c478bd9Sstevel@tonic-gate /* 617141040e8Srie * Process active relocations. 6187c478bd9Sstevel@tonic-gate */ 6197c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&ofl->ofl_actrels, lnp, rcp)) { 6207c478bd9Sstevel@tonic-gate /* LINTED */ 6217c478bd9Sstevel@tonic-gate for (arsp = (Rel_desc *)(rcp + 1); 6227c478bd9Sstevel@tonic-gate arsp < rcp->rc_free; arsp++) { 623b3fbe5e6Sseizo uchar_t *addr; 6247c478bd9Sstevel@tonic-gate Xword value; 6257c478bd9Sstevel@tonic-gate Sym_desc *sdp; 6267c478bd9Sstevel@tonic-gate const char *ifl_name; 6277c478bd9Sstevel@tonic-gate Xword refaddr; 6287c478bd9Sstevel@tonic-gate int moved = 0; 6297c478bd9Sstevel@tonic-gate Gotref gref; 6307c478bd9Sstevel@tonic-gate 6317c478bd9Sstevel@tonic-gate /* 6327c478bd9Sstevel@tonic-gate * If the section this relocation is against has been 6337c478bd9Sstevel@tonic-gate * discarded (-zignore), then discard (skip) the 6347c478bd9Sstevel@tonic-gate * relocation itself. 6357c478bd9Sstevel@tonic-gate */ 6367c478bd9Sstevel@tonic-gate if ((arsp->rel_isdesc->is_flags & FLG_IS_DISCARD) && 6377c478bd9Sstevel@tonic-gate ((arsp->rel_flags & 6387c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | 6397c478bd9Sstevel@tonic-gate FLG_REL_PLT | FLG_REL_NOINFO)) == 0)) { 6405aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, 6415aefb655Srie M_MACH, arsp)); 6427c478bd9Sstevel@tonic-gate continue; 6437c478bd9Sstevel@tonic-gate } 6447c478bd9Sstevel@tonic-gate 6457c478bd9Sstevel@tonic-gate /* 6467c478bd9Sstevel@tonic-gate * We deteremine what the 'got reference' 6477c478bd9Sstevel@tonic-gate * model (if required) is at this point. This 6487c478bd9Sstevel@tonic-gate * needs to be done before tls_fixup() since 6497c478bd9Sstevel@tonic-gate * it may 'transition' our instructions. 6507c478bd9Sstevel@tonic-gate * 6517c478bd9Sstevel@tonic-gate * The got table entries have already been assigned, 6527c478bd9Sstevel@tonic-gate * and we bind to those initial entries. 6537c478bd9Sstevel@tonic-gate */ 6547c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_DTLS) 6557c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 6567c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_MTLS) 6577c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 6587c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_STLS) 6597c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 6607c478bd9Sstevel@tonic-gate else 6617c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 6627c478bd9Sstevel@tonic-gate 6637c478bd9Sstevel@tonic-gate /* 6647c478bd9Sstevel@tonic-gate * Perform any required TLS fixups. 6657c478bd9Sstevel@tonic-gate */ 6667c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_TLSFIX) { 6677c478bd9Sstevel@tonic-gate Fixupret ret; 668141040e8Srie 6695aefb655Srie if ((ret = tls_fixups(ofl, arsp)) == FIX_ERROR) 6707c478bd9Sstevel@tonic-gate return (S_ERROR); 6717c478bd9Sstevel@tonic-gate if (ret == FIX_DONE) 6727c478bd9Sstevel@tonic-gate continue; 6737c478bd9Sstevel@tonic-gate } 6747c478bd9Sstevel@tonic-gate 6757c478bd9Sstevel@tonic-gate /* 6767c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or 6777c478bd9Sstevel@tonic-gate * expanded move table, adjust the relocation entries. 6787c478bd9Sstevel@tonic-gate */ 6797c478bd9Sstevel@tonic-gate if (arsp->rel_move) 6805aefb655Srie ld_adj_movereloc(ofl, arsp); 6817c478bd9Sstevel@tonic-gate 6827c478bd9Sstevel@tonic-gate sdp = arsp->rel_sym; 6837c478bd9Sstevel@tonic-gate refaddr = arsp->rel_roffset + 6847c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(arsp->rel_isdesc->is_indata); 6857c478bd9Sstevel@tonic-gate 6867c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_CLVAL) || 6877c478bd9Sstevel@tonic-gate (arsp->rel_flags & FLG_REL_GOTCL)) 6887c478bd9Sstevel@tonic-gate value = 0; 6897c478bd9Sstevel@tonic-gate else if (ELF_ST_TYPE(sdp->sd_sym->st_info) == 6907c478bd9Sstevel@tonic-gate STT_SECTION) { 691141040e8Srie Sym_desc *sym; 6927c478bd9Sstevel@tonic-gate 6937c478bd9Sstevel@tonic-gate /* 6947c478bd9Sstevel@tonic-gate * The value for a symbol pointing to a SECTION 6957c478bd9Sstevel@tonic-gate * is based off of that sections position. 6967c478bd9Sstevel@tonic-gate * 6975aefb655Srie * The second argument of the ld_am_I_partial() 6985aefb655Srie * is the value stored at the target address 6997c478bd9Sstevel@tonic-gate * relocation is going to be applied. 7007c478bd9Sstevel@tonic-gate */ 7017c478bd9Sstevel@tonic-gate if ((sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 7027c478bd9Sstevel@tonic-gate /* LINTED */ 7035aefb655Srie (sym = ld_am_I_partial(arsp, *(Xword *) 704b3fbe5e6Sseizo ((uchar_t *) 705b3fbe5e6Sseizo arsp->rel_isdesc->is_indata->d_buf + 7067c478bd9Sstevel@tonic-gate arsp->rel_roffset)))) { 7077c478bd9Sstevel@tonic-gate /* 7087c478bd9Sstevel@tonic-gate * If the symbol is moved, 7097c478bd9Sstevel@tonic-gate * adjust the value 7107c478bd9Sstevel@tonic-gate */ 7117c478bd9Sstevel@tonic-gate value = sym->sd_sym->st_value; 7127c478bd9Sstevel@tonic-gate moved = 1; 7137c478bd9Sstevel@tonic-gate } else { 714141040e8Srie value = _elf_getxoff( 715141040e8Srie sdp->sd_isc->is_indata); 7167c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & 7177c478bd9Sstevel@tonic-gate SHF_ALLOC) 7187c478bd9Sstevel@tonic-gate value += sdp->sd_isc->is_osdesc-> 7197c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 7207c478bd9Sstevel@tonic-gate } 7217c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & SHF_TLS) 7227c478bd9Sstevel@tonic-gate value -= ofl->ofl_tlsphdr->p_vaddr; 7232926dd2eSrie 7242926dd2eSrie } else if (IS_SIZE(arsp->rel_rtype)) { 7252926dd2eSrie /* 7262926dd2eSrie * Size relocations require the symbols size. 7272926dd2eSrie */ 7282926dd2eSrie value = sdp->sd_sym->st_size; 729141040e8Srie } else { 7307c478bd9Sstevel@tonic-gate /* 7317010c12aSrie * Else the value is the symbols value. 7327c478bd9Sstevel@tonic-gate */ 7337c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 734141040e8Srie } 7357c478bd9Sstevel@tonic-gate 7367c478bd9Sstevel@tonic-gate /* 7377c478bd9Sstevel@tonic-gate * Relocation against the GLOBAL_OFFSET_TABLE. 7387c478bd9Sstevel@tonic-gate */ 7397c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_GOT) 7407c478bd9Sstevel@tonic-gate arsp->rel_osdesc = ofl->ofl_osgot; 7417c478bd9Sstevel@tonic-gate 7427c478bd9Sstevel@tonic-gate /* 7437c478bd9Sstevel@tonic-gate * If loadable and not producing a relocatable object 7447c478bd9Sstevel@tonic-gate * add the sections virtual address to the reference 7457c478bd9Sstevel@tonic-gate * address. 7467c478bd9Sstevel@tonic-gate */ 7477c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_LOAD) && 748141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) 7497c478bd9Sstevel@tonic-gate refaddr += arsp->rel_isdesc->is_osdesc-> 7507c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 7517c478bd9Sstevel@tonic-gate 7527c478bd9Sstevel@tonic-gate /* 7537c478bd9Sstevel@tonic-gate * If this entry has a PLT assigned to it, it's 7547c478bd9Sstevel@tonic-gate * value is actually the address of the PLT (and 7557c478bd9Sstevel@tonic-gate * not the address of the function). 7567c478bd9Sstevel@tonic-gate */ 7577c478bd9Sstevel@tonic-gate if (IS_PLT(arsp->rel_rtype)) { 7587c478bd9Sstevel@tonic-gate if (sdp->sd_aux && sdp->sd_aux->sa_PLTndx) 7595aefb655Srie value = ld_calc_plt_addr(sdp, ofl); 7607c478bd9Sstevel@tonic-gate } 7617c478bd9Sstevel@tonic-gate 7627c478bd9Sstevel@tonic-gate /* 7637c478bd9Sstevel@tonic-gate * Add relocations addend to value. Add extra 7647c478bd9Sstevel@tonic-gate * relocation addend if needed. 7657c478bd9Sstevel@tonic-gate * 7667c478bd9Sstevel@tonic-gate * Note: for GOT relative relocations on amd64 7677c478bd9Sstevel@tonic-gate * we discard the addend. It was relevant 7687c478bd9Sstevel@tonic-gate * to the reference - not to the data item 7697c478bd9Sstevel@tonic-gate * being referenced (ie: that -4 thing). 7707c478bd9Sstevel@tonic-gate */ 7717c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_GOT) == 0) 7727c478bd9Sstevel@tonic-gate value += arsp->rel_raddend; 7737c478bd9Sstevel@tonic-gate 774141040e8Srie /* 775141040e8Srie * Determine whether the value needs further adjustment. 776141040e8Srie * Filter through the attributes of the relocation to 777141040e8Srie * determine what adjustment is required. Note, many 778141040e8Srie * of the following cases are only applicable when a 779141040e8Srie * .got is present. As a .got is not generated when a 780141040e8Srie * relocatable object is being built, any adjustments 781141040e8Srie * that require a .got need to be skipped. 782141040e8Srie */ 783141040e8Srie if ((arsp->rel_flags & FLG_REL_GOT) && 784141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 7857c478bd9Sstevel@tonic-gate Xword R1addr; 7867c478bd9Sstevel@tonic-gate uintptr_t R2addr; 7877c478bd9Sstevel@tonic-gate Word gotndx; 7887c478bd9Sstevel@tonic-gate Gotndx *gnp; 7897c478bd9Sstevel@tonic-gate 7907c478bd9Sstevel@tonic-gate /* 7917c478bd9Sstevel@tonic-gate * Perform relocation against GOT table. Since 7927c478bd9Sstevel@tonic-gate * this doesn't fit exactly into a relocation 7937c478bd9Sstevel@tonic-gate * we place the appropriate byte in the GOT 7947c478bd9Sstevel@tonic-gate * directly 7957c478bd9Sstevel@tonic-gate * 7967c478bd9Sstevel@tonic-gate * Calculate offset into GOT at which to apply 7977c478bd9Sstevel@tonic-gate * the relocation. 7987c478bd9Sstevel@tonic-gate */ 7995aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, 8007c478bd9Sstevel@tonic-gate ofl, arsp); 8017c478bd9Sstevel@tonic-gate assert(gnp); 8027c478bd9Sstevel@tonic-gate 8037c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_AMD64_DTPOFF64) 8047c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx + 1; 8057c478bd9Sstevel@tonic-gate else 8067c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx; 8077c478bd9Sstevel@tonic-gate 8087c478bd9Sstevel@tonic-gate R1addr = (Xword)(gotndx * M_GOT_ENTSIZE); 8097c478bd9Sstevel@tonic-gate 8107c478bd9Sstevel@tonic-gate /* 8117c478bd9Sstevel@tonic-gate * Add the GOTs data's offset. 8127c478bd9Sstevel@tonic-gate */ 8137c478bd9Sstevel@tonic-gate R2addr = R1addr + (uintptr_t) 8147c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_outdata->d_buf; 8157c478bd9Sstevel@tonic-gate 8165aefb655Srie DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, 8175aefb655Srie ELF_DBG_LD, M_MACH, SHT_RELA, 8187c478bd9Sstevel@tonic-gate arsp->rel_rtype, R1addr, value, 8197c478bd9Sstevel@tonic-gate arsp->rel_sname, arsp->rel_osdesc)); 8207c478bd9Sstevel@tonic-gate 8217c478bd9Sstevel@tonic-gate /* 8227c478bd9Sstevel@tonic-gate * And do it. 8237c478bd9Sstevel@tonic-gate */ 824141040e8Srie *(Xword *)R2addr = value; 8257c478bd9Sstevel@tonic-gate continue; 8267c478bd9Sstevel@tonic-gate 827141040e8Srie } else if (IS_GOT_BASED(arsp->rel_rtype) && 828141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8297c478bd9Sstevel@tonic-gate value -= ofl->ofl_osgot->os_shdr->sh_addr; 830141040e8Srie 831141040e8Srie } else if (IS_GOTPCREL(arsp->rel_rtype) && 832141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 833141040e8Srie Gotndx *gnp; 834141040e8Srie 8357c478bd9Sstevel@tonic-gate /* 8367c478bd9Sstevel@tonic-gate * Calculation: 8377c478bd9Sstevel@tonic-gate * G + GOT + A - P 8387c478bd9Sstevel@tonic-gate */ 8395aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 8407c478bd9Sstevel@tonic-gate gref, ofl, arsp); 841141040e8Srie assert(gnp); 8427c478bd9Sstevel@tonic-gate value = (Xword)(ofl->ofl_osgot->os_shdr-> 8437c478bd9Sstevel@tonic-gate sh_addr) + ((Xword)gnp->gn_gotndx * 8447c478bd9Sstevel@tonic-gate M_GOT_ENTSIZE) + arsp->rel_raddend - 8457c478bd9Sstevel@tonic-gate refaddr; 846141040e8Srie 847141040e8Srie } else if (IS_GOT_PC(arsp->rel_rtype) && 848141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 849141040e8Srie value = (Xword)(ofl->ofl_osgot->os_shdr-> 85054d82594Sseizo sh_addr) - refaddr + arsp->rel_raddend; 851141040e8Srie 8527c478bd9Sstevel@tonic-gate } else if ((IS_PC_RELATIVE(arsp->rel_rtype)) && 853141040e8Srie (((flags & FLG_OF_RELOBJ) == 0) || 8547c478bd9Sstevel@tonic-gate (arsp->rel_osdesc == sdp->sd_isc->is_osdesc))) { 8557c478bd9Sstevel@tonic-gate value -= refaddr; 856141040e8Srie 8577c478bd9Sstevel@tonic-gate } else if (IS_TLS_INS(arsp->rel_rtype) && 858141040e8Srie IS_GOT_RELATIVE(arsp->rel_rtype) && 859141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8607c478bd9Sstevel@tonic-gate Gotndx *gnp; 8617c478bd9Sstevel@tonic-gate 8625aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, 8637c478bd9Sstevel@tonic-gate ofl, arsp); 864141040e8Srie assert(gnp); 8657c478bd9Sstevel@tonic-gate value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 866141040e8Srie 867141040e8Srie } else if (IS_GOT_RELATIVE(arsp->rel_rtype) && 868141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 869141040e8Srie Gotndx *gnp; 8707c478bd9Sstevel@tonic-gate 8715aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 8727c478bd9Sstevel@tonic-gate gref, ofl, arsp); 8737c478bd9Sstevel@tonic-gate assert(gnp); 8747c478bd9Sstevel@tonic-gate value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 875141040e8Srie 876141040e8Srie } else if ((arsp->rel_flags & FLG_REL_STLS) && 877141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8787c478bd9Sstevel@tonic-gate Xword tlsstatsize; 879141040e8Srie 8807c478bd9Sstevel@tonic-gate /* 8817c478bd9Sstevel@tonic-gate * This is the LE TLS reference model. Static 8827c478bd9Sstevel@tonic-gate * offset is hard-coded. 8837c478bd9Sstevel@tonic-gate */ 884141040e8Srie tlsstatsize = 885141040e8Srie S_ROUND(ofl->ofl_tlsphdr->p_memsz, 8867c478bd9Sstevel@tonic-gate M_TLSSTATALIGN); 8877c478bd9Sstevel@tonic-gate value = tlsstatsize - value; 888141040e8Srie 8897c478bd9Sstevel@tonic-gate /* 890141040e8Srie * Since this code is fixed up, it assumes a 891141040e8Srie * negative offset that can be added to the 892141040e8Srie * thread pointer. 8937c478bd9Sstevel@tonic-gate */ 8947c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_AMD64_TPOFF32) 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_amd64_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_RELA, 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) > 9337c478bd9Sstevel@tonic-gate ofl->ofl_size) || (arsp->rel_roffset > 9347c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_shdr->sh_size)) { 9357c478bd9Sstevel@tonic-gate int class; 9367c478bd9Sstevel@tonic-gate 937b3fbe5e6Sseizo 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_amd64_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)) { 971b3fbe5e6Sseizo if (do_reloc((uchar_t)arsp->rel_rtype, 9725aefb655Srie addr, &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 9817c478bd9Sstevel@tonic-gate uintptr_t 9825aefb655Srie ld_add_outrel(Word flags, Rel_desc *rsp, Ofl_desc *ofl) 9837c478bd9Sstevel@tonic-gate { 984141040e8Srie Rel_desc *orsp; 985141040e8Srie Rel_cache *rcp; 986141040e8Srie Sym_desc *sdp = rsp->rel_sym; 9877c478bd9Sstevel@tonic-gate 9887c478bd9Sstevel@tonic-gate /* 9897c478bd9Sstevel@tonic-gate * Static executables *do not* want any relocations against them. 9907c478bd9Sstevel@tonic-gate * Since our engine still creates relocations against a WEAK UNDEFINED 9917c478bd9Sstevel@tonic-gate * symbol in a static executable, it's best to disable them here 9927c478bd9Sstevel@tonic-gate * instead of through out the relocation code. 9937c478bd9Sstevel@tonic-gate */ 9947c478bd9Sstevel@tonic-gate if ((ofl->ofl_flags & (FLG_OF_STATIC | FLG_OF_EXEC)) == 9957c478bd9Sstevel@tonic-gate (FLG_OF_STATIC | FLG_OF_EXEC)) 9967c478bd9Sstevel@tonic-gate return (1); 9977c478bd9Sstevel@tonic-gate 9987c478bd9Sstevel@tonic-gate /* 9997c478bd9Sstevel@tonic-gate * If no relocation cache structures are available allocate 10007c478bd9Sstevel@tonic-gate * a new one and link it into the cache list. 10017c478bd9Sstevel@tonic-gate */ 10027c478bd9Sstevel@tonic-gate if ((ofl->ofl_outrels.tail == 0) || 10037c478bd9Sstevel@tonic-gate ((rcp = (Rel_cache *)ofl->ofl_outrels.tail->data) == 0) || 10047c478bd9Sstevel@tonic-gate ((orsp = rcp->rc_free) == rcp->rc_end)) { 10057c478bd9Sstevel@tonic-gate static size_t nextsize = 0; 10067c478bd9Sstevel@tonic-gate size_t size; 10077c478bd9Sstevel@tonic-gate 10087c478bd9Sstevel@tonic-gate /* 10097c478bd9Sstevel@tonic-gate * Output relocation numbers can vary considerably between 10107c478bd9Sstevel@tonic-gate * building executables or shared objects (pic vs. non-pic), 10117c478bd9Sstevel@tonic-gate * etc. But, they typically aren't very large, so for these 10127c478bd9Sstevel@tonic-gate * objects use a standard bucket size. For building relocatable 10137c478bd9Sstevel@tonic-gate * objects, typically there will be an output relocation for 10147c478bd9Sstevel@tonic-gate * every input relocation. 10157c478bd9Sstevel@tonic-gate */ 10167c478bd9Sstevel@tonic-gate if (nextsize == 0) { 10177c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_RELOBJ) { 10187c478bd9Sstevel@tonic-gate if ((size = ofl->ofl_relocincnt) == 0) 10197c478bd9Sstevel@tonic-gate size = REL_LOIDESCNO; 10207c478bd9Sstevel@tonic-gate if (size > REL_HOIDESCNO) 10217c478bd9Sstevel@tonic-gate nextsize = REL_HOIDESCNO; 10227c478bd9Sstevel@tonic-gate else 10237c478bd9Sstevel@tonic-gate nextsize = REL_LOIDESCNO; 10247c478bd9Sstevel@tonic-gate } else 10257c478bd9Sstevel@tonic-gate nextsize = size = REL_HOIDESCNO; 10267c478bd9Sstevel@tonic-gate } else 10277c478bd9Sstevel@tonic-gate size = nextsize; 10287c478bd9Sstevel@tonic-gate 10297c478bd9Sstevel@tonic-gate size = size * sizeof (Rel_desc); 10307c478bd9Sstevel@tonic-gate 10317c478bd9Sstevel@tonic-gate if (((rcp = libld_malloc(sizeof (Rel_cache) + size)) == 0) || 10327c478bd9Sstevel@tonic-gate (list_appendc(&ofl->ofl_outrels, rcp) == 0)) 10337c478bd9Sstevel@tonic-gate return (S_ERROR); 10347c478bd9Sstevel@tonic-gate 10357c478bd9Sstevel@tonic-gate /* LINTED */ 10367c478bd9Sstevel@tonic-gate rcp->rc_free = orsp = (Rel_desc *)(rcp + 1); 10377c478bd9Sstevel@tonic-gate /* LINTED */ 10387c478bd9Sstevel@tonic-gate rcp->rc_end = (Rel_desc *)((char *)rcp->rc_free + size); 10397c478bd9Sstevel@tonic-gate } 10407c478bd9Sstevel@tonic-gate 10417c478bd9Sstevel@tonic-gate /* 10427c478bd9Sstevel@tonic-gate * If we are adding a output relocation against a section 10437c478bd9Sstevel@tonic-gate * symbol (non-RELATIVE) then mark that section. These sections 10447c478bd9Sstevel@tonic-gate * will be added to the .dynsym symbol table. 10457c478bd9Sstevel@tonic-gate */ 10467c478bd9Sstevel@tonic-gate if (sdp && (rsp->rel_rtype != M_R_RELATIVE) && 10477c478bd9Sstevel@tonic-gate ((flags & FLG_REL_SCNNDX) || 10487c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION))) { 10497c478bd9Sstevel@tonic-gate 10507c478bd9Sstevel@tonic-gate /* 10517c478bd9Sstevel@tonic-gate * If this is a COMMON symbol - no output section 10527c478bd9Sstevel@tonic-gate * exists yet - (it's created as part of sym_validate()). 10537c478bd9Sstevel@tonic-gate * So - we mark here that when it's created it should 10547c478bd9Sstevel@tonic-gate * be tagged with the FLG_OS_OUTREL flag. 10557c478bd9Sstevel@tonic-gate */ 10567c478bd9Sstevel@tonic-gate if ((sdp->sd_flags & FLG_SY_SPECSEC) && 10570bc07c75Srie (sdp->sd_sym->st_shndx == SHN_COMMON)) { 10587c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) != STT_TLS) 10597c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_BSSOREL; 10607c478bd9Sstevel@tonic-gate else 10617c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_TLSOREL; 1062141040e8Srie } else { 1063141040e8Srie Os_desc *osp = sdp->sd_isc->is_osdesc; 10647c478bd9Sstevel@tonic-gate 1065c1c6f601Srie if (osp && ((osp->os_flags & FLG_OS_OUTREL) == 0)) { 10667c478bd9Sstevel@tonic-gate ofl->ofl_dynshdrcnt++; 10677c478bd9Sstevel@tonic-gate osp->os_flags |= FLG_OS_OUTREL; 10687c478bd9Sstevel@tonic-gate } 10697c478bd9Sstevel@tonic-gate } 10707c478bd9Sstevel@tonic-gate } 10717c478bd9Sstevel@tonic-gate 10727c478bd9Sstevel@tonic-gate *orsp = *rsp; 10737c478bd9Sstevel@tonic-gate orsp->rel_flags |= flags; 10747c478bd9Sstevel@tonic-gate 10757c478bd9Sstevel@tonic-gate rcp->rc_free++; 10767c478bd9Sstevel@tonic-gate ofl->ofl_outrelscnt++; 10777c478bd9Sstevel@tonic-gate 10787c478bd9Sstevel@tonic-gate if (flags & FLG_REL_GOT) 10797c478bd9Sstevel@tonic-gate ofl->ofl_relocgotsz += (Xword)sizeof (Rela); 10807c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_PLT) 10817c478bd9Sstevel@tonic-gate ofl->ofl_relocpltsz += (Xword)sizeof (Rela); 10827c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_BSS) 10837c478bd9Sstevel@tonic-gate ofl->ofl_relocbsssz += (Xword)sizeof (Rela); 10847c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_NOINFO) 10857c478bd9Sstevel@tonic-gate ofl->ofl_relocrelsz += (Xword)sizeof (Rela); 10867c478bd9Sstevel@tonic-gate else 10877c478bd9Sstevel@tonic-gate orsp->rel_osdesc->os_szoutrels += (Xword)sizeof (Rela); 10887c478bd9Sstevel@tonic-gate 10897c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == M_R_RELATIVE) 10907c478bd9Sstevel@tonic-gate ofl->ofl_relocrelcnt++; 10917c478bd9Sstevel@tonic-gate 10927c478bd9Sstevel@tonic-gate /* 10937c478bd9Sstevel@tonic-gate * We don't perform sorting on PLT relocations because 10947c478bd9Sstevel@tonic-gate * they have already been assigned a PLT index and if we 10957c478bd9Sstevel@tonic-gate * were to sort them we would have to re-assign the plt indexes. 10967c478bd9Sstevel@tonic-gate */ 10977c478bd9Sstevel@tonic-gate if (!(flags & FLG_REL_PLT)) 10987c478bd9Sstevel@tonic-gate ofl->ofl_reloccnt++; 10997c478bd9Sstevel@tonic-gate 1100141040e8Srie /* 1101141040e8Srie * Insure a GLOBAL_OFFSET_TABLE is generated if required. 1102141040e8Srie */ 1103141040e8Srie if (IS_GOT_REQUIRED(orsp->rel_rtype)) 1104141040e8Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 1105141040e8Srie 11067c478bd9Sstevel@tonic-gate /* 11077c478bd9Sstevel@tonic-gate * Identify and possibly warn of a displacement relocation. 11087c478bd9Sstevel@tonic-gate */ 11097c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_DISP) { 11107c478bd9Sstevel@tonic-gate ofl->ofl_dtflags_1 |= DF_1_DISPRELPND; 11117c478bd9Sstevel@tonic-gate 11127c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_VERBOSE) 11135aefb655Srie ld_disp_errmsg(MSG_INTL(MSG_REL_DISPREL4), orsp, ofl); 11147c478bd9Sstevel@tonic-gate } 11155aefb655Srie DBG_CALL(Dbg_reloc_ors_entry(ofl->ofl_lml, ELF_DBG_LD, SHT_RELA, 11165aefb655Srie M_MACH, orsp)); 11177c478bd9Sstevel@tonic-gate return (1); 11187c478bd9Sstevel@tonic-gate } 11197c478bd9Sstevel@tonic-gate 11207c478bd9Sstevel@tonic-gate /* 11217c478bd9Sstevel@tonic-gate * Stub routine since register symbols are not supported on amd64. 11227c478bd9Sstevel@tonic-gate */ 11237c478bd9Sstevel@tonic-gate /* ARGSUSED */ 11247c478bd9Sstevel@tonic-gate uintptr_t 11255aefb655Srie ld_reloc_register(Rel_desc * rsp, Is_desc * isp, Ofl_desc * ofl) 11267c478bd9Sstevel@tonic-gate { 11275aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_REL_NOREG)); 11287c478bd9Sstevel@tonic-gate return (S_ERROR); 11297c478bd9Sstevel@tonic-gate } 11307c478bd9Sstevel@tonic-gate 11317c478bd9Sstevel@tonic-gate /* 11327c478bd9Sstevel@tonic-gate * process relocation for a LOCAL symbol 11337c478bd9Sstevel@tonic-gate */ 11347c478bd9Sstevel@tonic-gate uintptr_t 11355aefb655Srie ld_reloc_local(Rel_desc * rsp, Ofl_desc * ofl) 11367c478bd9Sstevel@tonic-gate { 11377c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 11387c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 11390bc07c75Srie Word shndx = sdp->sd_sym->st_shndx; 11407c478bd9Sstevel@tonic-gate Word ortype = rsp->rel_rtype; 11417c478bd9Sstevel@tonic-gate 11427c478bd9Sstevel@tonic-gate /* 11437c478bd9Sstevel@tonic-gate * if ((shared object) and (not pc relative relocation) and 11447c478bd9Sstevel@tonic-gate * (not against ABS symbol)) 11457c478bd9Sstevel@tonic-gate * then 11467c478bd9Sstevel@tonic-gate * build R_AMD64_RELATIVE 11477c478bd9Sstevel@tonic-gate * fi 11487c478bd9Sstevel@tonic-gate */ 11497c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_SHAROBJ) && (rsp->rel_flags & FLG_REL_LOAD) && 11502926dd2eSrie !(IS_PC_RELATIVE(rsp->rel_rtype)) && !(IS_SIZE(rsp->rel_rtype)) && 11517c478bd9Sstevel@tonic-gate !(IS_GOT_BASED(rsp->rel_rtype)) && 11527c478bd9Sstevel@tonic-gate !(rsp->rel_isdesc != NULL && 11537c478bd9Sstevel@tonic-gate (rsp->rel_isdesc->is_shdr->sh_type == SHT_SUNW_dof)) && 11547c478bd9Sstevel@tonic-gate (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) || 11557c478bd9Sstevel@tonic-gate (shndx != SHN_ABS) || (sdp->sd_aux && sdp->sd_aux->sa_symspec))) { 11567c478bd9Sstevel@tonic-gate 11577c478bd9Sstevel@tonic-gate /* 11587c478bd9Sstevel@tonic-gate * R_AMD64_RELATIVE updates a 64bit address, if this 11597c478bd9Sstevel@tonic-gate * relocation isn't a 64bit binding then we can not 11607c478bd9Sstevel@tonic-gate * simplify it to a RELATIVE relocation. 11617c478bd9Sstevel@tonic-gate */ 11627c478bd9Sstevel@tonic-gate if (reloc_table[ortype].re_fsize != sizeof (Addr)) { 11635aefb655Srie return (ld_add_outrel(NULL, rsp, ofl)); 11647c478bd9Sstevel@tonic-gate } 11657c478bd9Sstevel@tonic-gate 11667c478bd9Sstevel@tonic-gate rsp->rel_rtype = R_AMD64_RELATIVE; 11675aefb655Srie if (ld_add_outrel(FLG_REL_ADVAL, rsp, ofl) == S_ERROR) 11687c478bd9Sstevel@tonic-gate return (S_ERROR); 11697c478bd9Sstevel@tonic-gate rsp->rel_rtype = ortype; 11707c478bd9Sstevel@tonic-gate return (1); 11717c478bd9Sstevel@tonic-gate } 11727c478bd9Sstevel@tonic-gate 1173b3fbe5e6Sseizo /* 1174b3fbe5e6Sseizo * If the relocation is against a 'non-allocatable' section 1175b3fbe5e6Sseizo * and we can not resolve it now - then give a warning 1176b3fbe5e6Sseizo * message. 1177b3fbe5e6Sseizo * 1178b3fbe5e6Sseizo * We can not resolve the symbol if either: 1179b3fbe5e6Sseizo * a) it's undefined 1180b3fbe5e6Sseizo * b) it's defined in a shared library and a 1181b3fbe5e6Sseizo * COPY relocation hasn't moved it to the executable 1182b3fbe5e6Sseizo * 1183b3fbe5e6Sseizo * Note: because we process all of the relocations against the 1184b3fbe5e6Sseizo * text segment before any others - we know whether 1185b3fbe5e6Sseizo * or not a copy relocation will be generated before 1186b3fbe5e6Sseizo * we get here (see reloc_init()->reloc_segments()). 1187b3fbe5e6Sseizo */ 11887c478bd9Sstevel@tonic-gate if (!(rsp->rel_flags & FLG_REL_LOAD) && 1189b3fbe5e6Sseizo ((shndx == SHN_UNDEF) || 1190b3fbe5e6Sseizo ((sdp->sd_ref == REF_DYN_NEED) && 1191b3fbe5e6Sseizo ((sdp->sd_flags & FLG_SY_MVTOCOMM) == 0)))) { 1192b3fbe5e6Sseizo /* 1193b3fbe5e6Sseizo * If the relocation is against a SHT_SUNW_ANNOTATE 1194b3fbe5e6Sseizo * section - then silently ignore that the relocation 1195b3fbe5e6Sseizo * can not be resolved. 1196b3fbe5e6Sseizo */ 1197b3fbe5e6Sseizo if (rsp->rel_osdesc && 1198b3fbe5e6Sseizo (rsp->rel_osdesc->os_shdr->sh_type == SHT_SUNW_ANNOTATE)) 1199b3fbe5e6Sseizo return (0); 12005aefb655Srie (void) eprintf(ofl->ofl_lml, ERR_WARNING, 12015aefb655Srie MSG_INTL(MSG_REL_EXTERNSYM), 1202c13de8f6Sab conv_reloc_amd64_type(rsp->rel_rtype, 0), 12037c478bd9Sstevel@tonic-gate rsp->rel_isdesc->is_file->ifl_name, 12047c478bd9Sstevel@tonic-gate demangle(rsp->rel_sname), rsp->rel_osdesc->os_name); 12057c478bd9Sstevel@tonic-gate return (1); 12067c478bd9Sstevel@tonic-gate } 12077c478bd9Sstevel@tonic-gate 12087c478bd9Sstevel@tonic-gate /* 12097c478bd9Sstevel@tonic-gate * Perform relocation. 12107c478bd9Sstevel@tonic-gate */ 12115aefb655Srie return (ld_add_actrel(NULL, rsp, ofl)); 12127c478bd9Sstevel@tonic-gate } 12137c478bd9Sstevel@tonic-gate 12147c478bd9Sstevel@tonic-gate 12157c478bd9Sstevel@tonic-gate uintptr_t 12167c478bd9Sstevel@tonic-gate /* ARGSUSED */ 12175aefb655Srie ld_reloc_GOTOP(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 12187c478bd9Sstevel@tonic-gate { 12197c478bd9Sstevel@tonic-gate /* 12207c478bd9Sstevel@tonic-gate * Stub routine for common code compatibility, we shouldn't 12217c478bd9Sstevel@tonic-gate * actually get here on amd64. 12227c478bd9Sstevel@tonic-gate */ 1223d326b23bSrie assert(0); 12247c478bd9Sstevel@tonic-gate return (S_ERROR); 12257c478bd9Sstevel@tonic-gate } 12267c478bd9Sstevel@tonic-gate 12277c478bd9Sstevel@tonic-gate uintptr_t 12285aefb655Srie ld_reloc_TLS(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 12297c478bd9Sstevel@tonic-gate { 12307c478bd9Sstevel@tonic-gate Word rtype = rsp->rel_rtype; 12317c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 12327c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 12337c478bd9Sstevel@tonic-gate Gotndx *gnp; 12347c478bd9Sstevel@tonic-gate 12357c478bd9Sstevel@tonic-gate /* 1236d326b23bSrie * If we're building an executable - use either the IE or LE access 1237d326b23bSrie * model. If we're building a shared object process any IE model. 12387c478bd9Sstevel@tonic-gate */ 1239d326b23bSrie if ((flags & FLG_OF_EXEC) || (IS_TLS_IE(rtype))) { 12407c478bd9Sstevel@tonic-gate /* 1241d326b23bSrie * Set the DF_STATIC_TLS flag. 12427c478bd9Sstevel@tonic-gate */ 12437c478bd9Sstevel@tonic-gate ofl->ofl_dtflags |= DF_STATIC_TLS; 12447c478bd9Sstevel@tonic-gate 1245d326b23bSrie if (!local || ((flags & FLG_OF_EXEC) == 0)) { 12467c478bd9Sstevel@tonic-gate /* 1247d326b23bSrie * Assign a GOT entry for static TLS references. 12487c478bd9Sstevel@tonic-gate */ 1249d326b23bSrie if ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 1250d326b23bSrie GOT_REF_TLSIE, ofl, rsp)) == 0) { 12517c478bd9Sstevel@tonic-gate 1252d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, 1253d326b23bSrie gnp, GOT_REF_TLSIE, FLG_REL_STLS, 1254d326b23bSrie rtype, R_AMD64_TPOFF64, 0) == S_ERROR) 1255d326b23bSrie return (S_ERROR); 1256d326b23bSrie } 12577c478bd9Sstevel@tonic-gate 12587c478bd9Sstevel@tonic-gate /* 1259d326b23bSrie * IE access model. 12607c478bd9Sstevel@tonic-gate */ 12617c478bd9Sstevel@tonic-gate if (IS_TLS_IE(rtype)) 12625aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 12637c478bd9Sstevel@tonic-gate 12647c478bd9Sstevel@tonic-gate /* 1265d326b23bSrie * Fixups are required for other executable models. 12667c478bd9Sstevel@tonic-gate */ 12675aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 12687c478bd9Sstevel@tonic-gate rsp, ofl)); 12697c478bd9Sstevel@tonic-gate } 1270d326b23bSrie 12717c478bd9Sstevel@tonic-gate /* 1272d326b23bSrie * LE access model. 12737c478bd9Sstevel@tonic-gate */ 12747c478bd9Sstevel@tonic-gate if (IS_TLS_LE(rtype)) 12755aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 1276d326b23bSrie 12775aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 12785aefb655Srie rsp, ofl)); 12797c478bd9Sstevel@tonic-gate } 12807c478bd9Sstevel@tonic-gate 12817c478bd9Sstevel@tonic-gate /* 1282d326b23bSrie * Building a shared object. 1283d326b23bSrie * 1284d326b23bSrie * Assign a GOT entry for a dynamic TLS reference. 12857c478bd9Sstevel@tonic-gate */ 12865aefb655Srie if (IS_TLS_LD(rtype) && ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 12877c478bd9Sstevel@tonic-gate GOT_REF_TLSLD, ofl, rsp)) == 0)) { 1288d326b23bSrie 1289d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSLD, 1290d326b23bSrie FLG_REL_MTLS, rtype, R_AMD64_DTPMOD64, 0) == S_ERROR) 12917c478bd9Sstevel@tonic-gate return (S_ERROR); 1292d326b23bSrie 12935aefb655Srie } else if (IS_TLS_GD(rtype) && 1294d326b23bSrie ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), GOT_REF_TLSGD, 1295d326b23bSrie ofl, rsp)) == 0)) { 1296d326b23bSrie 1297d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSGD, 1298d326b23bSrie FLG_REL_DTLS, rtype, R_AMD64_DTPMOD64, 1299d326b23bSrie R_AMD64_DTPOFF64) == S_ERROR) 13007c478bd9Sstevel@tonic-gate return (S_ERROR); 13017c478bd9Sstevel@tonic-gate } 13027c478bd9Sstevel@tonic-gate 13037c478bd9Sstevel@tonic-gate if (IS_TLS_LD(rtype)) 13045aefb655Srie return (ld_add_actrel(FLG_REL_MTLS, rsp, ofl)); 13057c478bd9Sstevel@tonic-gate 13065aefb655Srie return (ld_add_actrel(FLG_REL_DTLS, rsp, ofl)); 13077c478bd9Sstevel@tonic-gate } 13087c478bd9Sstevel@tonic-gate 13097c478bd9Sstevel@tonic-gate /* ARGSUSED3 */ 13107c478bd9Sstevel@tonic-gate Gotndx * 13115aefb655Srie ld_find_gotndx(List * lst, Gotref gref, Ofl_desc * ofl, Rel_desc * rdesc) 13127c478bd9Sstevel@tonic-gate { 13137c478bd9Sstevel@tonic-gate Listnode * lnp; 13147c478bd9Sstevel@tonic-gate Gotndx * gnp; 13157c478bd9Sstevel@tonic-gate 13167c478bd9Sstevel@tonic-gate assert(rdesc != 0); 13177c478bd9Sstevel@tonic-gate 13187c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSLD) && ofl->ofl_tlsldgotndx) 13197c478bd9Sstevel@tonic-gate return (ofl->ofl_tlsldgotndx); 13207c478bd9Sstevel@tonic-gate 13217c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(lst, lnp, gnp)) { 13227c478bd9Sstevel@tonic-gate if ((rdesc->rel_raddend == gnp->gn_addend) && 13237c478bd9Sstevel@tonic-gate (gnp->gn_gotref == gref)) { 13247c478bd9Sstevel@tonic-gate return (gnp); 13257c478bd9Sstevel@tonic-gate } 13267c478bd9Sstevel@tonic-gate } 13277c478bd9Sstevel@tonic-gate return ((Gotndx *)0); 13287c478bd9Sstevel@tonic-gate } 13297c478bd9Sstevel@tonic-gate 13307c478bd9Sstevel@tonic-gate Xword 13315aefb655Srie ld_calc_got_offset(Rel_desc * rdesc, Ofl_desc * ofl) 13327c478bd9Sstevel@tonic-gate { 13337c478bd9Sstevel@tonic-gate Os_desc *osp = ofl->ofl_osgot; 13347c478bd9Sstevel@tonic-gate Sym_desc *sdp = rdesc->rel_sym; 13357c478bd9Sstevel@tonic-gate Xword gotndx; 13367c478bd9Sstevel@tonic-gate Gotref gref; 13377c478bd9Sstevel@tonic-gate Gotndx *gnp; 13387c478bd9Sstevel@tonic-gate 13397c478bd9Sstevel@tonic-gate if (rdesc->rel_flags & FLG_REL_DTLS) 13407c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 13417c478bd9Sstevel@tonic-gate else if (rdesc->rel_flags & FLG_REL_MTLS) 13427c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 13437c478bd9Sstevel@tonic-gate else if (rdesc->rel_flags & FLG_REL_STLS) 13447c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 13457c478bd9Sstevel@tonic-gate else 13467c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 13477c478bd9Sstevel@tonic-gate 13485aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, ofl, rdesc); 13497c478bd9Sstevel@tonic-gate assert(gnp); 13507c478bd9Sstevel@tonic-gate 13517c478bd9Sstevel@tonic-gate gotndx = (Xword)gnp->gn_gotndx; 13527c478bd9Sstevel@tonic-gate 13537c478bd9Sstevel@tonic-gate if ((rdesc->rel_flags & FLG_REL_DTLS) && 13547c478bd9Sstevel@tonic-gate (rdesc->rel_rtype == R_AMD64_DTPOFF64)) 13557c478bd9Sstevel@tonic-gate gotndx++; 13567c478bd9Sstevel@tonic-gate 13577c478bd9Sstevel@tonic-gate return ((Xword)(osp->os_shdr->sh_addr + (gotndx * M_GOT_ENTSIZE))); 13587c478bd9Sstevel@tonic-gate } 13597c478bd9Sstevel@tonic-gate 13607c478bd9Sstevel@tonic-gate 13617c478bd9Sstevel@tonic-gate /* ARGSUSED5 */ 13627c478bd9Sstevel@tonic-gate uintptr_t 1363d326b23bSrie ld_assign_got_ndx(List * lst, Gotndx * pgnp, Gotref gref, Ofl_desc * ofl, 13647c478bd9Sstevel@tonic-gate Rel_desc * rsp, Sym_desc * sdp) 13657c478bd9Sstevel@tonic-gate { 13667c478bd9Sstevel@tonic-gate Xword raddend; 13677c478bd9Sstevel@tonic-gate Gotndx *gnp, *_gnp; 13687c478bd9Sstevel@tonic-gate Listnode *lnp, *plnp; 13697c478bd9Sstevel@tonic-gate uint_t gotents; 13707c478bd9Sstevel@tonic-gate 13717c478bd9Sstevel@tonic-gate raddend = rsp->rel_raddend; 13727c478bd9Sstevel@tonic-gate if (pgnp && (pgnp->gn_addend == raddend) && 13737c478bd9Sstevel@tonic-gate (pgnp->gn_gotref == gref)) 13747c478bd9Sstevel@tonic-gate return (1); 13757c478bd9Sstevel@tonic-gate 13767c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSGD) || (gref == GOT_REF_TLSLD)) 13777c478bd9Sstevel@tonic-gate gotents = 2; 13787c478bd9Sstevel@tonic-gate else 13797c478bd9Sstevel@tonic-gate gotents = 1; 13807c478bd9Sstevel@tonic-gate 13817c478bd9Sstevel@tonic-gate plnp = 0; 13827c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(lst, lnp, _gnp)) { 13837c478bd9Sstevel@tonic-gate if (_gnp->gn_addend > raddend) 13847c478bd9Sstevel@tonic-gate break; 13857c478bd9Sstevel@tonic-gate plnp = lnp; 13867c478bd9Sstevel@tonic-gate } 13877c478bd9Sstevel@tonic-gate 13887c478bd9Sstevel@tonic-gate /* 13897c478bd9Sstevel@tonic-gate * Allocate a new entry. 13907c478bd9Sstevel@tonic-gate */ 13917c478bd9Sstevel@tonic-gate if ((gnp = libld_calloc(sizeof (Gotndx), 1)) == 0) 13927c478bd9Sstevel@tonic-gate return (S_ERROR); 13937c478bd9Sstevel@tonic-gate gnp->gn_addend = raddend; 13947c478bd9Sstevel@tonic-gate gnp->gn_gotndx = ofl->ofl_gotcnt; 13957c478bd9Sstevel@tonic-gate gnp->gn_gotref = gref; 13967c478bd9Sstevel@tonic-gate 13977c478bd9Sstevel@tonic-gate ofl->ofl_gotcnt += gotents; 13987c478bd9Sstevel@tonic-gate 13997c478bd9Sstevel@tonic-gate if (gref == GOT_REF_TLSLD) { 14007c478bd9Sstevel@tonic-gate ofl->ofl_tlsldgotndx = gnp; 14017c478bd9Sstevel@tonic-gate return (1); 14027c478bd9Sstevel@tonic-gate } 14037c478bd9Sstevel@tonic-gate 14047c478bd9Sstevel@tonic-gate if (plnp == 0) { 14057c478bd9Sstevel@tonic-gate /* 14067c478bd9Sstevel@tonic-gate * Insert at head of list 14077c478bd9Sstevel@tonic-gate */ 14087c478bd9Sstevel@tonic-gate if (list_prependc(lst, (void *)gnp) == 0) 14097c478bd9Sstevel@tonic-gate return (S_ERROR); 14107c478bd9Sstevel@tonic-gate } else if (_gnp->gn_addend > raddend) { 14117c478bd9Sstevel@tonic-gate /* 14127c478bd9Sstevel@tonic-gate * Insert in middle of lest 14137c478bd9Sstevel@tonic-gate */ 14147c478bd9Sstevel@tonic-gate if (list_insertc(lst, (void *)gnp, plnp) == 0) 14157c478bd9Sstevel@tonic-gate return (S_ERROR); 14167c478bd9Sstevel@tonic-gate } else { 14177c478bd9Sstevel@tonic-gate /* 14187c478bd9Sstevel@tonic-gate * Append to tail of list 14197c478bd9Sstevel@tonic-gate */ 14207c478bd9Sstevel@tonic-gate if (list_appendc(lst, (void *)gnp) == 0) 14217c478bd9Sstevel@tonic-gate return (S_ERROR); 14227c478bd9Sstevel@tonic-gate } 14237c478bd9Sstevel@tonic-gate return (1); 14247c478bd9Sstevel@tonic-gate } 14257c478bd9Sstevel@tonic-gate 14267c478bd9Sstevel@tonic-gate void 14275aefb655Srie ld_assign_plt_ndx(Sym_desc * sdp, Ofl_desc *ofl) 14287c478bd9Sstevel@tonic-gate { 14297c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTndx = 1 + ofl->ofl_pltcnt++; 14307c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx = ofl->ofl_gotcnt++; 1431141040e8Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 14327c478bd9Sstevel@tonic-gate } 14337c478bd9Sstevel@tonic-gate 1434b3fbe5e6Sseizo static uchar_t plt0_template[M_PLT_ENTSIZE] = { 14357c478bd9Sstevel@tonic-gate /* 0x00 PUSHQ GOT+8(%rip) */ 0xff, 0x35, 0x00, 0x00, 0x00, 0x00, 14367c478bd9Sstevel@tonic-gate /* 0x06 JMP *GOT+16(%rip) */ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 14377c478bd9Sstevel@tonic-gate /* 0x0c NOP */ 0x90, 14387c478bd9Sstevel@tonic-gate /* 0x0d NOP */ 0x90, 14397c478bd9Sstevel@tonic-gate /* 0x0e NOP */ 0x90, 14407c478bd9Sstevel@tonic-gate /* 0x0f NOP */ 0x90 14417c478bd9Sstevel@tonic-gate }; 14427c478bd9Sstevel@tonic-gate 14437c478bd9Sstevel@tonic-gate /* 14447c478bd9Sstevel@tonic-gate * Initializes .got[0] with the _DYNAMIC symbol value. 14457c478bd9Sstevel@tonic-gate */ 14467c478bd9Sstevel@tonic-gate uintptr_t 1447d326b23bSrie ld_fillin_gotplt(Ofl_desc *ofl) 14487c478bd9Sstevel@tonic-gate { 14497c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 14507c478bd9Sstevel@tonic-gate Word dtflags1 = ofl->ofl_dtflags_1; 14517c478bd9Sstevel@tonic-gate 14527c478bd9Sstevel@tonic-gate if (ofl->ofl_osgot) { 1453d326b23bSrie Sym_desc *sdp; 14547c478bd9Sstevel@tonic-gate 14555aefb655Srie if ((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_DYNAMIC_U), 14567c478bd9Sstevel@tonic-gate SYM_NOHASH, 0, ofl)) != NULL) { 1457d326b23bSrie uchar_t *genptr; 1458d326b23bSrie 1459d326b23bSrie genptr = ((uchar_t *)ofl->ofl_osgot->os_outdata->d_buf + 14607c478bd9Sstevel@tonic-gate (M_GOT_XDYNAMIC * M_GOT_ENTSIZE)); 14617c478bd9Sstevel@tonic-gate /* LINTED */ 14627c478bd9Sstevel@tonic-gate *(Xword *)genptr = sdp->sd_sym->st_value; 14637c478bd9Sstevel@tonic-gate } 14647c478bd9Sstevel@tonic-gate } 14657c478bd9Sstevel@tonic-gate 14667c478bd9Sstevel@tonic-gate /* 14677c478bd9Sstevel@tonic-gate * Fill in the reserved slot in the procedure linkage table the first 14687c478bd9Sstevel@tonic-gate * entry is: 14697c478bd9Sstevel@tonic-gate * 0x00 PUSHQ GOT+8(%rip) # GOT[1] 14707c478bd9Sstevel@tonic-gate * 0x06 JMP *GOT+16(%rip) # GOT[2] 14717c478bd9Sstevel@tonic-gate * 0x0c NOP 14727c478bd9Sstevel@tonic-gate * 0x0d NOP 14737c478bd9Sstevel@tonic-gate * 0x0e NOP 14747c478bd9Sstevel@tonic-gate * 0x0f NOP 14757c478bd9Sstevel@tonic-gate */ 14767c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_DYNAMIC) && ofl->ofl_osplt) { 1477d326b23bSrie uchar_t *pltent; 1478d326b23bSrie Xword val1; 14797c478bd9Sstevel@tonic-gate 1480b3fbe5e6Sseizo pltent = (uchar_t *)ofl->ofl_osplt->os_outdata->d_buf; 14817c478bd9Sstevel@tonic-gate bcopy(plt0_template, pltent, sizeof (plt0_template)); 14827c478bd9Sstevel@tonic-gate 14837c478bd9Sstevel@tonic-gate /* 14847c478bd9Sstevel@tonic-gate * filin: 14857c478bd9Sstevel@tonic-gate * PUSHQ GOT + 8(%rip) 14867c478bd9Sstevel@tonic-gate * 14877c478bd9Sstevel@tonic-gate * Note: 0x06 below represents the offset to the 14887c478bd9Sstevel@tonic-gate * next instruction - which is what %rip will 14897c478bd9Sstevel@tonic-gate * be pointing at. 14907c478bd9Sstevel@tonic-gate */ 14917c478bd9Sstevel@tonic-gate val1 = (ofl->ofl_osgot->os_shdr->sh_addr) + 14927c478bd9Sstevel@tonic-gate (M_GOT_XLINKMAP * M_GOT_ENTSIZE) - 14937c478bd9Sstevel@tonic-gate ofl->ofl_osplt->os_shdr->sh_addr - 0x06; 14947c478bd9Sstevel@tonic-gate 14957c478bd9Sstevel@tonic-gate /* 14967c478bd9Sstevel@tonic-gate * If '-z noreloc' is specified - skip the do_reloc 14977c478bd9Sstevel@tonic-gate * stage. 14987c478bd9Sstevel@tonic-gate */ 14997c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_RELOBJ) || 15007c478bd9Sstevel@tonic-gate !(dtflags1 & DF_1_NORELOC)) { 15017c478bd9Sstevel@tonic-gate if (do_reloc(R_AMD64_GOTPCREL, &pltent[0x02], 15027c478bd9Sstevel@tonic-gate &val1, MSG_ORIG(MSG_SYM_PLTENT), 15035aefb655Srie MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) { 15045aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 15055aefb655Srie MSG_INTL(MSG_PLT_PLT0FAIL)); 15067c478bd9Sstevel@tonic-gate return (S_ERROR); 15077c478bd9Sstevel@tonic-gate } 15087c478bd9Sstevel@tonic-gate } 15097c478bd9Sstevel@tonic-gate 15107c478bd9Sstevel@tonic-gate /* 15117c478bd9Sstevel@tonic-gate * filin: 15127c478bd9Sstevel@tonic-gate * JMP *GOT+16(%rip) 15137c478bd9Sstevel@tonic-gate */ 15147c478bd9Sstevel@tonic-gate val1 = (ofl->ofl_osgot->os_shdr->sh_addr) + 15157c478bd9Sstevel@tonic-gate (M_GOT_XRTLD * M_GOT_ENTSIZE) - 15167c478bd9Sstevel@tonic-gate ofl->ofl_osplt->os_shdr->sh_addr - 0x0c; 15177c478bd9Sstevel@tonic-gate /* 15187c478bd9Sstevel@tonic-gate * If '-z noreloc' is specified - skip the do_reloc 15197c478bd9Sstevel@tonic-gate * stage. 15207c478bd9Sstevel@tonic-gate */ 15217c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_RELOBJ) || 15227c478bd9Sstevel@tonic-gate !(dtflags1 & DF_1_NORELOC)) { 15237c478bd9Sstevel@tonic-gate if (do_reloc(R_AMD64_GOTPCREL, &pltent[0x08], 15247c478bd9Sstevel@tonic-gate &val1, MSG_ORIG(MSG_SYM_PLTENT), 15255aefb655Srie MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) { 15265aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 15275aefb655Srie MSG_INTL(MSG_PLT_PLT0FAIL)); 15287c478bd9Sstevel@tonic-gate return (S_ERROR); 15297c478bd9Sstevel@tonic-gate } 15307c478bd9Sstevel@tonic-gate } 15317c478bd9Sstevel@tonic-gate } 15327c478bd9Sstevel@tonic-gate return (1); 15337c478bd9Sstevel@tonic-gate } 1534