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 /* 23de777a60Sab * Copyright 2007 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; 114*f3324781Sab int bswap; 1157c478bd9Sstevel@tonic-gate 1167c478bd9Sstevel@tonic-gate got_off = sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 1177c478bd9Sstevel@tonic-gate plt_off = M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * 1187c478bd9Sstevel@tonic-gate M_PLT_ENTSIZE); 119b3fbe5e6Sseizo plt0 = (uchar_t *)(ofl->ofl_osplt->os_outdata->d_buf); 1207c478bd9Sstevel@tonic-gate pltent = plt0 + plt_off; 121b3fbe5e6Sseizo gotent = (uchar_t *)(ofl->ofl_osgot->os_outdata->d_buf) + got_off; 1227c478bd9Sstevel@tonic-gate 1237c478bd9Sstevel@tonic-gate bcopy(pltn_entry, pltent, sizeof (pltn_entry)); 1247c478bd9Sstevel@tonic-gate /* 1257c478bd9Sstevel@tonic-gate * Fill in the got entry with the address of the next instruction. 1267c478bd9Sstevel@tonic-gate */ 1277c478bd9Sstevel@tonic-gate /* LINTED */ 128b3fbe5e6Sseizo *(Word *)gotent = ofl->ofl_osplt->os_shdr->sh_addr + plt_off + 129b3fbe5e6Sseizo M_PLT_INSSIZE; 1307c478bd9Sstevel@tonic-gate 131*f3324781Sab /* 132*f3324781Sab * If '-z noreloc' is specified - skip the do_reloc_ld 133*f3324781Sab * stage. 134*f3324781Sab */ 135*f3324781Sab if (!OFL_DO_RELOC(ofl)) 136*f3324781Sab return (1); 137*f3324781Sab 138*f3324781Sab /* 139*f3324781Sab * If the running linker has a different byte order than 140*f3324781Sab * the target host, tell do_reloc_ld() to swap bytes. 141*f3324781Sab * 142*f3324781Sab * We know the PLT is PROGBITS --- we don't have to check 143*f3324781Sab */ 144*f3324781Sab bswap = (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) != 0; 145*f3324781Sab 1467c478bd9Sstevel@tonic-gate /* 1477c478bd9Sstevel@tonic-gate * patchup: 1487c478bd9Sstevel@tonic-gate * jmpq *name1@gotpcrel(%rip) 1497c478bd9Sstevel@tonic-gate * 1507c478bd9Sstevel@tonic-gate * NOTE: 0x06 represents next instruction. 1517c478bd9Sstevel@tonic-gate */ 1527c478bd9Sstevel@tonic-gate val1 = (ofl->ofl_osgot->os_shdr->sh_addr + got_off) - 153de777a60Sab (ofl->ofl_osplt->os_shdr->sh_addr + plt_off) - 0x06; 1547c478bd9Sstevel@tonic-gate 155*f3324781Sab if (do_reloc_ld(R_AMD64_GOTPCREL, &pltent[0x02], 156*f3324781Sab &val1, MSG_ORIG(MSG_SYM_PLTENT), 157*f3324781Sab MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, ofl->ofl_lml) == 0) { 158*f3324781Sab eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_PLT_PLTNFAIL), 159*f3324781Sab sdp->sd_aux->sa_PLTndx, demangle(sdp->sd_name)); 160*f3324781Sab return (S_ERROR); 1617c478bd9Sstevel@tonic-gate } 1627c478bd9Sstevel@tonic-gate 1637c478bd9Sstevel@tonic-gate /* 1647c478bd9Sstevel@tonic-gate * patchup: 1657c478bd9Sstevel@tonic-gate * pushq $pltndx 1667c478bd9Sstevel@tonic-gate */ 1677c478bd9Sstevel@tonic-gate val1 = (Xword)(sdp->sd_aux->sa_PLTndx - 1); 168*f3324781Sab 169*f3324781Sab if (do_reloc_ld(R_AMD64_32, &pltent[0x07], 170*f3324781Sab &val1, MSG_ORIG(MSG_SYM_PLTENT), 171*f3324781Sab MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, ofl->ofl_lml) == 0) { 172*f3324781Sab eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_PLT_PLTNFAIL), 173*f3324781Sab sdp->sd_aux->sa_PLTndx, demangle(sdp->sd_name)); 174*f3324781Sab return (S_ERROR); 1757c478bd9Sstevel@tonic-gate } 1767c478bd9Sstevel@tonic-gate 1777c478bd9Sstevel@tonic-gate /* 1787c478bd9Sstevel@tonic-gate * patchup: 1797c478bd9Sstevel@tonic-gate * jmpq .plt0(%rip) 180*f3324781Sab * NOTE: 0x10 represents next instruction. The rather complex 181*f3324781Sab * series of casts is necessary to sign extend an offset into 182*f3324781Sab * a 64-bit value while satisfying various compiler error 183*f3324781Sab * checks. Handle with care. 1847c478bd9Sstevel@tonic-gate */ 185b3fbe5e6Sseizo val1 = (Xword)((intptr_t)((uintptr_t)plt0 - 186b3fbe5e6Sseizo (uintptr_t)(&pltent[0x10]))); 187b3fbe5e6Sseizo 188*f3324781Sab if (do_reloc_ld(R_AMD64_PC32, &pltent[0x0c], 189*f3324781Sab &val1, MSG_ORIG(MSG_SYM_PLTENT), 190*f3324781Sab MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, ofl->ofl_lml) == 0) { 191*f3324781Sab eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_PLT_PLTNFAIL), 192*f3324781Sab sdp->sd_aux->sa_PLTndx, demangle(sdp->sd_name)); 193*f3324781Sab return (S_ERROR); 1947c478bd9Sstevel@tonic-gate } 195*f3324781Sab 1967c478bd9Sstevel@tonic-gate return (1); 1977c478bd9Sstevel@tonic-gate } 1987c478bd9Sstevel@tonic-gate 1997c478bd9Sstevel@tonic-gate uintptr_t 2005aefb655Srie ld_perform_outreloc(Rel_desc * orsp, Ofl_desc * ofl) 2017c478bd9Sstevel@tonic-gate { 2027c478bd9Sstevel@tonic-gate Os_desc * relosp, * osp = 0; 2037c478bd9Sstevel@tonic-gate Word ndx; 2047c478bd9Sstevel@tonic-gate Xword roffset, value; 2057c478bd9Sstevel@tonic-gate Sxword raddend; 2067c478bd9Sstevel@tonic-gate Rela rea; 2077c478bd9Sstevel@tonic-gate char *relbits; 2087c478bd9Sstevel@tonic-gate Sym_desc * sdp, * psym = (Sym_desc *)0; 2097c478bd9Sstevel@tonic-gate int sectmoved = 0; 2107c478bd9Sstevel@tonic-gate 2117c478bd9Sstevel@tonic-gate raddend = orsp->rel_raddend; 2127c478bd9Sstevel@tonic-gate sdp = orsp->rel_sym; 2137c478bd9Sstevel@tonic-gate 2147c478bd9Sstevel@tonic-gate /* 2157c478bd9Sstevel@tonic-gate * If the section this relocation is against has been discarded 2167c478bd9Sstevel@tonic-gate * (-zignore), then also discard (skip) the relocation itself. 2177c478bd9Sstevel@tonic-gate */ 2187c478bd9Sstevel@tonic-gate if (orsp->rel_isdesc && ((orsp->rel_flags & 2197c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | FLG_REL_PLT | FLG_REL_NOINFO)) == 0) && 2207c478bd9Sstevel@tonic-gate (orsp->rel_isdesc->is_flags & FLG_IS_DISCARD)) { 2215aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, orsp)); 2227c478bd9Sstevel@tonic-gate return (1); 2237c478bd9Sstevel@tonic-gate } 2247c478bd9Sstevel@tonic-gate 2257c478bd9Sstevel@tonic-gate /* 2267c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or expanded move 2277c478bd9Sstevel@tonic-gate * table, adjust the relocation entries. 2287c478bd9Sstevel@tonic-gate */ 2297c478bd9Sstevel@tonic-gate if (orsp->rel_move) 2305aefb655Srie ld_adj_movereloc(ofl, orsp); 2317c478bd9Sstevel@tonic-gate 2327c478bd9Sstevel@tonic-gate /* 2337c478bd9Sstevel@tonic-gate * If this is a relocation against a section then we need to adjust the 2347c478bd9Sstevel@tonic-gate * raddend field to compensate for the new position of the input section 2357c478bd9Sstevel@tonic-gate * within the new output section. 2367c478bd9Sstevel@tonic-gate */ 2377c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) { 2387c478bd9Sstevel@tonic-gate if (ofl->ofl_parsym.head && 2397c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 2407c478bd9Sstevel@tonic-gate /* LINTED */ 2415aefb655Srie (psym = ld_am_I_partial(orsp, orsp->rel_raddend))) { 2425aefb655Srie DBG_CALL(Dbg_move_outsctadj(ofl->ofl_lml, psym)); 2437c478bd9Sstevel@tonic-gate sectmoved = 1; 2447c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_RELOBJ) 2457c478bd9Sstevel@tonic-gate raddend = psym->sd_sym->st_value; 2467c478bd9Sstevel@tonic-gate else 2477c478bd9Sstevel@tonic-gate raddend = psym->sd_sym->st_value - 2487c478bd9Sstevel@tonic-gate psym->sd_isc->is_osdesc->os_shdr->sh_addr; 2497c478bd9Sstevel@tonic-gate /* LINTED */ 2507c478bd9Sstevel@tonic-gate raddend += (Off)_elf_getxoff(psym->sd_isc->is_indata); 2517c478bd9Sstevel@tonic-gate if (psym->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 2527c478bd9Sstevel@tonic-gate raddend += 253de777a60Sab psym->sd_isc->is_osdesc->os_shdr->sh_addr; 2547c478bd9Sstevel@tonic-gate } else { 2557c478bd9Sstevel@tonic-gate /* LINTED */ 2567c478bd9Sstevel@tonic-gate raddend += (Off)_elf_getxoff(sdp->sd_isc->is_indata); 2577c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 2587c478bd9Sstevel@tonic-gate raddend += 259de777a60Sab sdp->sd_isc->is_osdesc->os_shdr->sh_addr; 2607c478bd9Sstevel@tonic-gate } 2617c478bd9Sstevel@tonic-gate } 2627c478bd9Sstevel@tonic-gate 2637c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 2647c478bd9Sstevel@tonic-gate 2657c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_GOT) { 2667c478bd9Sstevel@tonic-gate /* 2677c478bd9Sstevel@tonic-gate * Note: for GOT relative relocations on amd64 2687c478bd9Sstevel@tonic-gate * we discard the addend. It was relevant 2697c478bd9Sstevel@tonic-gate * to the reference - not to the data item 2707c478bd9Sstevel@tonic-gate * being referenced (ie: that -4 thing). 2717c478bd9Sstevel@tonic-gate */ 2727c478bd9Sstevel@tonic-gate raddend = 0; 2737c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 2745aefb655Srie roffset = ld_calc_got_offset(orsp, ofl); 2755aefb655Srie 2767c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_PLT) { 2777c478bd9Sstevel@tonic-gate /* 2787c478bd9Sstevel@tonic-gate * Note that relocations for PLT's actually 2797c478bd9Sstevel@tonic-gate * cause a relocation againt the GOT. 2807c478bd9Sstevel@tonic-gate */ 2817c478bd9Sstevel@tonic-gate osp = ofl->ofl_osplt; 2827c478bd9Sstevel@tonic-gate roffset = (ofl->ofl_osgot->os_shdr->sh_addr) + 2837c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 2847c478bd9Sstevel@tonic-gate raddend = 0; 2857c478bd9Sstevel@tonic-gate if (plt_entry(ofl, sdp) == S_ERROR) 2867c478bd9Sstevel@tonic-gate return (S_ERROR); 2877c478bd9Sstevel@tonic-gate 2887c478bd9Sstevel@tonic-gate } else if (orsp->rel_flags & FLG_REL_BSS) { 2897c478bd9Sstevel@tonic-gate /* 2907c478bd9Sstevel@tonic-gate * This must be a R_AMD64_COPY. For these set the roffset to 2917c478bd9Sstevel@tonic-gate * point to the new symbols location. 2927c478bd9Sstevel@tonic-gate */ 2937c478bd9Sstevel@tonic-gate osp = ofl->ofl_isbss->is_osdesc; 2947c478bd9Sstevel@tonic-gate roffset = value; 2957c478bd9Sstevel@tonic-gate 2967c478bd9Sstevel@tonic-gate /* 2977c478bd9Sstevel@tonic-gate * The raddend doesn't mean anything in a R_SPARC_COPY 2987c478bd9Sstevel@tonic-gate * relocation. Null it out because it can confuse people. 2997c478bd9Sstevel@tonic-gate */ 3007c478bd9Sstevel@tonic-gate raddend = 0; 3017c478bd9Sstevel@tonic-gate } else { 3027c478bd9Sstevel@tonic-gate osp = orsp->rel_osdesc; 3037c478bd9Sstevel@tonic-gate 3047c478bd9Sstevel@tonic-gate /* 3057c478bd9Sstevel@tonic-gate * Calculate virtual offset of reference point; equals offset 3067c478bd9Sstevel@tonic-gate * into section + vaddr of section for loadable sections, or 3077c478bd9Sstevel@tonic-gate * offset plus section displacement for nonloadable sections. 3087c478bd9Sstevel@tonic-gate */ 3097c478bd9Sstevel@tonic-gate roffset = orsp->rel_roffset + 3107c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(orsp->rel_isdesc->is_indata); 3117c478bd9Sstevel@tonic-gate if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) 3127c478bd9Sstevel@tonic-gate roffset += orsp->rel_isdesc->is_osdesc-> 3137c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 3147c478bd9Sstevel@tonic-gate } 3157c478bd9Sstevel@tonic-gate 3167c478bd9Sstevel@tonic-gate if ((osp == 0) || ((relosp = osp->os_relosdesc) == 0)) 3177c478bd9Sstevel@tonic-gate relosp = ofl->ofl_osrel; 3187c478bd9Sstevel@tonic-gate 3197c478bd9Sstevel@tonic-gate /* 3207c478bd9Sstevel@tonic-gate * Assign the symbols index for the output relocation. If the 3217c478bd9Sstevel@tonic-gate * relocation refers to a SECTION symbol then it's index is based upon 3227c478bd9Sstevel@tonic-gate * the output sections symbols index. Otherwise the index can be 3237c478bd9Sstevel@tonic-gate * derived from the symbols index itself. 3247c478bd9Sstevel@tonic-gate */ 3257c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_AMD64_RELATIVE) 3267c478bd9Sstevel@tonic-gate ndx = STN_UNDEF; 3277c478bd9Sstevel@tonic-gate else if ((orsp->rel_flags & FLG_REL_SCNNDX) || 3287c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION)) { 3297c478bd9Sstevel@tonic-gate if (sectmoved == 0) { 3307c478bd9Sstevel@tonic-gate /* 3317c478bd9Sstevel@tonic-gate * Check for a null input section. This can 3327c478bd9Sstevel@tonic-gate * occur if this relocation references a symbol 3337c478bd9Sstevel@tonic-gate * generated by sym_add_sym(). 3347c478bd9Sstevel@tonic-gate */ 3357c478bd9Sstevel@tonic-gate if ((sdp->sd_isc != 0) && 3367c478bd9Sstevel@tonic-gate (sdp->sd_isc->is_osdesc != 0)) 3377c478bd9Sstevel@tonic-gate ndx = sdp->sd_isc->is_osdesc->os_scnsymndx; 3387c478bd9Sstevel@tonic-gate else 3397c478bd9Sstevel@tonic-gate ndx = sdp->sd_shndx; 3407c478bd9Sstevel@tonic-gate } else 3417c478bd9Sstevel@tonic-gate ndx = ofl->ofl_sunwdata1ndx; 3427c478bd9Sstevel@tonic-gate } else 3437c478bd9Sstevel@tonic-gate ndx = sdp->sd_symndx; 3447c478bd9Sstevel@tonic-gate 3457c478bd9Sstevel@tonic-gate /* 3467c478bd9Sstevel@tonic-gate * Add the symbols 'value' to the addend field. 3477c478bd9Sstevel@tonic-gate */ 3487c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_ADVAL) 3497c478bd9Sstevel@tonic-gate raddend += value; 3507c478bd9Sstevel@tonic-gate 3517c478bd9Sstevel@tonic-gate /* 3527010c12aSrie * The addend field for R_AMD64_DTPMOD64 means nothing. The addend 3537010c12aSrie * is propagated in the corresponding R_AMD64_DTPOFF64 relocation. 3547c478bd9Sstevel@tonic-gate */ 3557c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_AMD64_DTPMOD64) 3567c478bd9Sstevel@tonic-gate raddend = 0; 3577c478bd9Sstevel@tonic-gate 3587c478bd9Sstevel@tonic-gate relbits = (char *)relosp->os_outdata->d_buf; 3597c478bd9Sstevel@tonic-gate 3607c478bd9Sstevel@tonic-gate rea.r_info = ELF_R_INFO(ndx, orsp->rel_rtype); 3617c478bd9Sstevel@tonic-gate rea.r_offset = roffset; 3627c478bd9Sstevel@tonic-gate rea.r_addend = raddend; 3635aefb655Srie DBG_CALL(Dbg_reloc_out(ofl, ELF_DBG_LD, SHT_RELA, &rea, relosp->os_name, 3645aefb655Srie orsp->rel_sname)); 3657c478bd9Sstevel@tonic-gate 3667c478bd9Sstevel@tonic-gate /* 3677c478bd9Sstevel@tonic-gate * Assert we haven't walked off the end of our relocation table. 3687c478bd9Sstevel@tonic-gate */ 3697c478bd9Sstevel@tonic-gate assert(relosp->os_szoutrels <= relosp->os_shdr->sh_size); 3707c478bd9Sstevel@tonic-gate 3717c478bd9Sstevel@tonic-gate (void) memcpy((relbits + relosp->os_szoutrels), 3727c478bd9Sstevel@tonic-gate (char *)&rea, sizeof (Rela)); 3737c478bd9Sstevel@tonic-gate relosp->os_szoutrels += (Xword)sizeof (Rela); 3747c478bd9Sstevel@tonic-gate 3757c478bd9Sstevel@tonic-gate /* 3767c478bd9Sstevel@tonic-gate * Determine if this relocation is against a non-writable, allocatable 3777c478bd9Sstevel@tonic-gate * section. If so we may need to provide a text relocation diagnostic. 3787c478bd9Sstevel@tonic-gate * Note that relocations against the .plt (R_AMD64_JUMP_SLOT) actually 3797c478bd9Sstevel@tonic-gate * result in modifications to the .got. 3807c478bd9Sstevel@tonic-gate */ 3817c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == R_AMD64_JUMP_SLOT) 3827c478bd9Sstevel@tonic-gate osp = ofl->ofl_osgot; 3837c478bd9Sstevel@tonic-gate 3845aefb655Srie ld_reloc_remain_entry(orsp, osp, ofl); 3857c478bd9Sstevel@tonic-gate return (1); 3867c478bd9Sstevel@tonic-gate } 3877c478bd9Sstevel@tonic-gate 3887c478bd9Sstevel@tonic-gate /* 3897c478bd9Sstevel@tonic-gate * amd64 Instructions for TLS processing 3907c478bd9Sstevel@tonic-gate */ 391b3fbe5e6Sseizo static uchar_t tlsinstr_gd_ie[] = { 3927c478bd9Sstevel@tonic-gate /* 3937c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 3947c478bd9Sstevel@tonic-gate */ 3957c478bd9Sstevel@tonic-gate 0x64, 0x48, 0x8b, 0x04, 0x25, 3967c478bd9Sstevel@tonic-gate 0x00, 0x00, 0x00, 0x00, 3977c478bd9Sstevel@tonic-gate /* 3987c478bd9Sstevel@tonic-gate * 0x09 addq x@gottpoff(%rip), %rax 3997c478bd9Sstevel@tonic-gate */ 4007c478bd9Sstevel@tonic-gate 0x48, 0x03, 0x05, 0x00, 0x00, 4017c478bd9Sstevel@tonic-gate 0x00, 0x00 4027c478bd9Sstevel@tonic-gate }; 4037c478bd9Sstevel@tonic-gate 404b3fbe5e6Sseizo static uchar_t tlsinstr_gd_le[] = { 4057c478bd9Sstevel@tonic-gate /* 4067c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 4077c478bd9Sstevel@tonic-gate */ 4087c478bd9Sstevel@tonic-gate 0x64, 0x48, 0x8b, 0x04, 0x25, 4097c478bd9Sstevel@tonic-gate 0x00, 0x00, 0x00, 0x00, 4107c478bd9Sstevel@tonic-gate /* 4117c478bd9Sstevel@tonic-gate * 0x09 leaq x@gottpoff(%rip), %rax 4127c478bd9Sstevel@tonic-gate */ 4137c478bd9Sstevel@tonic-gate 0x48, 0x8d, 0x80, 0x00, 0x00, 4147c478bd9Sstevel@tonic-gate 0x00, 0x00 4157c478bd9Sstevel@tonic-gate }; 4167c478bd9Sstevel@tonic-gate 417b3fbe5e6Sseizo static uchar_t tlsinstr_ld_le[] = { 4187c478bd9Sstevel@tonic-gate /* 4197c478bd9Sstevel@tonic-gate * .byte 0x66 4207c478bd9Sstevel@tonic-gate */ 4217c478bd9Sstevel@tonic-gate 0x66, 4227c478bd9Sstevel@tonic-gate /* 4237c478bd9Sstevel@tonic-gate * .byte 0x66 4247c478bd9Sstevel@tonic-gate */ 4257c478bd9Sstevel@tonic-gate 0x66, 4267c478bd9Sstevel@tonic-gate /* 4277c478bd9Sstevel@tonic-gate * .byte 0x66 4287c478bd9Sstevel@tonic-gate */ 4297c478bd9Sstevel@tonic-gate 0x66, 4307c478bd9Sstevel@tonic-gate /* 4317c478bd9Sstevel@tonic-gate * movq %fs:0, %rax 4327c478bd9Sstevel@tonic-gate */ 4337c478bd9Sstevel@tonic-gate 0x64, 0x48, 0x8b, 0x04, 0x25, 4347c478bd9Sstevel@tonic-gate 0x00, 0x00, 0x00, 0x00 4357c478bd9Sstevel@tonic-gate }; 4367c478bd9Sstevel@tonic-gate 4377c478bd9Sstevel@tonic-gate 4385aefb655Srie static Fixupret 4395aefb655Srie tls_fixups(Ofl_desc *ofl, Rel_desc *arsp) 4407c478bd9Sstevel@tonic-gate { 4417c478bd9Sstevel@tonic-gate Sym_desc *sdp = arsp->rel_sym; 4427c478bd9Sstevel@tonic-gate Word rtype = arsp->rel_rtype; 443b3fbe5e6Sseizo uchar_t *offset; 4447c478bd9Sstevel@tonic-gate 445b3fbe5e6Sseizo offset = (uchar_t *)((uintptr_t)arsp->rel_roffset + 446b3fbe5e6Sseizo (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) + 447b3fbe5e6Sseizo (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf); 4487c478bd9Sstevel@tonic-gate 4497c478bd9Sstevel@tonic-gate if (sdp->sd_ref == REF_DYN_NEED) { 4507c478bd9Sstevel@tonic-gate /* 4517c478bd9Sstevel@tonic-gate * IE reference model 4527c478bd9Sstevel@tonic-gate */ 4537c478bd9Sstevel@tonic-gate switch (rtype) { 4547c478bd9Sstevel@tonic-gate case R_AMD64_TLSGD: 4557c478bd9Sstevel@tonic-gate /* 4567c478bd9Sstevel@tonic-gate * GD -> IE 4577c478bd9Sstevel@tonic-gate * 4587c478bd9Sstevel@tonic-gate * Transition: 4597c478bd9Sstevel@tonic-gate * 0x00 .byte 0x66 4607c478bd9Sstevel@tonic-gate * 0x01 leaq x@tlsgd(%rip), %rdi 4617c478bd9Sstevel@tonic-gate * 0x08 .word 0x6666 4627c478bd9Sstevel@tonic-gate * 0x0a rex64 4637c478bd9Sstevel@tonic-gate * 0x0b call __tls_get_addr@plt 4647c478bd9Sstevel@tonic-gate * 0x10 4657c478bd9Sstevel@tonic-gate * To: 4667c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 4677c478bd9Sstevel@tonic-gate * 0x09 addq x@gottpoff(%rip), %rax 4687c478bd9Sstevel@tonic-gate * 0x10 4697c478bd9Sstevel@tonic-gate */ 4705aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 471051d39bbSrie R_AMD64_GOTTPOFF, arsp)); 4727c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_GOTTPOFF; 4737c478bd9Sstevel@tonic-gate arsp->rel_roffset += 8; 4747c478bd9Sstevel@tonic-gate arsp->rel_raddend = (Sxword)-4; 4755aefb655Srie 4767c478bd9Sstevel@tonic-gate /* 477051d39bbSrie * Adjust 'offset' to beginning of instruction 4787c478bd9Sstevel@tonic-gate * sequence. 4797c478bd9Sstevel@tonic-gate */ 4807c478bd9Sstevel@tonic-gate offset -= 4; 4817c478bd9Sstevel@tonic-gate (void) memcpy(offset, tlsinstr_gd_ie, 4825aefb655Srie sizeof (tlsinstr_gd_ie)); 4837c478bd9Sstevel@tonic-gate return (FIX_RELOC); 4845aefb655Srie 4857c478bd9Sstevel@tonic-gate case R_AMD64_PLT32: 4867c478bd9Sstevel@tonic-gate /* 487051d39bbSrie * Fixup done via the TLS_GD relocation. 4887c478bd9Sstevel@tonic-gate */ 4895aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 490051d39bbSrie R_AMD64_NONE, arsp)); 4917c478bd9Sstevel@tonic-gate return (FIX_DONE); 4927c478bd9Sstevel@tonic-gate } 4937c478bd9Sstevel@tonic-gate } 4947c478bd9Sstevel@tonic-gate 4957c478bd9Sstevel@tonic-gate /* 4967c478bd9Sstevel@tonic-gate * LE reference model 4977c478bd9Sstevel@tonic-gate */ 4987c478bd9Sstevel@tonic-gate switch (rtype) { 4997c478bd9Sstevel@tonic-gate case R_AMD64_TLSGD: 5007c478bd9Sstevel@tonic-gate /* 5017c478bd9Sstevel@tonic-gate * GD -> LE 5027c478bd9Sstevel@tonic-gate * 5037c478bd9Sstevel@tonic-gate * Transition: 5047c478bd9Sstevel@tonic-gate * 0x00 .byte 0x66 5057c478bd9Sstevel@tonic-gate * 0x01 leaq x@tlsgd(%rip), %rdi 5067c478bd9Sstevel@tonic-gate * 0x08 .word 0x6666 5077c478bd9Sstevel@tonic-gate * 0x0a rex64 5087c478bd9Sstevel@tonic-gate * 0x0b call __tls_get_addr@plt 5097c478bd9Sstevel@tonic-gate * 0x10 5107c478bd9Sstevel@tonic-gate * To: 5117c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 5127c478bd9Sstevel@tonic-gate * 0x09 leaq x@tpoff(%rax), %rax 5137c478bd9Sstevel@tonic-gate * 0x10 5147c478bd9Sstevel@tonic-gate */ 5155aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 516051d39bbSrie R_AMD64_TPOFF32, arsp)); 5177c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_TPOFF32; 5187c478bd9Sstevel@tonic-gate arsp->rel_roffset += 8; 5197c478bd9Sstevel@tonic-gate arsp->rel_raddend = 0; 5205aefb655Srie 5217c478bd9Sstevel@tonic-gate /* 522051d39bbSrie * Adjust 'offset' to beginning of instruction sequence. 5237c478bd9Sstevel@tonic-gate */ 5247c478bd9Sstevel@tonic-gate offset -= 4; 5255aefb655Srie (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); 5267c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5275aefb655Srie 5287c478bd9Sstevel@tonic-gate case R_AMD64_GOTTPOFF: 5297c478bd9Sstevel@tonic-gate /* 5307c478bd9Sstevel@tonic-gate * IE -> LE 5317c478bd9Sstevel@tonic-gate * 5327c478bd9Sstevel@tonic-gate * Transition: 5337c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 5347c478bd9Sstevel@tonic-gate * 0x09 addq x@gottopoff(%rip), %rax 5357c478bd9Sstevel@tonic-gate * 0x10 5367c478bd9Sstevel@tonic-gate * To: 5377c478bd9Sstevel@tonic-gate * 0x00 movq %fs:0, %rax 5387c478bd9Sstevel@tonic-gate * 0x09 leaq x@tpoff(%rax), %rax 5397c478bd9Sstevel@tonic-gate * 0x10 5407c478bd9Sstevel@tonic-gate */ 541051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 542051d39bbSrie R_AMD64_TPOFF32, arsp)); 5437c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_TPOFF32; 5447c478bd9Sstevel@tonic-gate arsp->rel_raddend = 0; 5455aefb655Srie 5467c478bd9Sstevel@tonic-gate /* 547051d39bbSrie * Adjust 'offset' to beginning of instruction sequence. 5487c478bd9Sstevel@tonic-gate */ 5497c478bd9Sstevel@tonic-gate offset -= 12; 5505aefb655Srie 5517c478bd9Sstevel@tonic-gate /* 552051d39bbSrie * Same code sequence used in the GD -> LE transition. 5537c478bd9Sstevel@tonic-gate */ 5545aefb655Srie (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); 5557c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5565aefb655Srie 5577c478bd9Sstevel@tonic-gate case R_AMD64_TLSLD: 5587c478bd9Sstevel@tonic-gate /* 5597c478bd9Sstevel@tonic-gate * LD -> LE 5607c478bd9Sstevel@tonic-gate * 5617c478bd9Sstevel@tonic-gate * Transition 5627c478bd9Sstevel@tonic-gate * 0x00 leaq x1@tlsgd(%rip), %rdi 5637c478bd9Sstevel@tonic-gate * 0x07 call __tls_get_addr@plt 5647c478bd9Sstevel@tonic-gate * 0x0c 5657c478bd9Sstevel@tonic-gate * To: 5667c478bd9Sstevel@tonic-gate * 0x00 .byte 0x66 5677c478bd9Sstevel@tonic-gate * 0x01 .byte 0x66 5687c478bd9Sstevel@tonic-gate * 0x02 .byte 0x66 5697c478bd9Sstevel@tonic-gate * 0x03 movq %fs:0, %rax 5707c478bd9Sstevel@tonic-gate */ 571051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 572051d39bbSrie R_AMD64_NONE, arsp)); 5737c478bd9Sstevel@tonic-gate offset -= 3; 5745aefb655Srie (void) memcpy(offset, tlsinstr_ld_le, sizeof (tlsinstr_ld_le)); 5757c478bd9Sstevel@tonic-gate return (FIX_DONE); 5765aefb655Srie 5777c478bd9Sstevel@tonic-gate case R_AMD64_DTPOFF32: 5787c478bd9Sstevel@tonic-gate /* 5797c478bd9Sstevel@tonic-gate * LD->LE 5807c478bd9Sstevel@tonic-gate * 5817c478bd9Sstevel@tonic-gate * Transition: 5827c478bd9Sstevel@tonic-gate * 0x00 leaq x1@dtpoff(%rax), %rcx 5837c478bd9Sstevel@tonic-gate * To: 5847c478bd9Sstevel@tonic-gate * 0x00 leaq x1@tpoff(%rax), %rcx 5857c478bd9Sstevel@tonic-gate */ 586051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 587051d39bbSrie R_AMD64_TPOFF32, arsp)); 5887c478bd9Sstevel@tonic-gate arsp->rel_rtype = R_AMD64_TPOFF32; 5897c478bd9Sstevel@tonic-gate arsp->rel_raddend = 0; 5907c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5917c478bd9Sstevel@tonic-gate } 5927c478bd9Sstevel@tonic-gate 5937c478bd9Sstevel@tonic-gate return (FIX_RELOC); 5947c478bd9Sstevel@tonic-gate } 5957c478bd9Sstevel@tonic-gate 5967c478bd9Sstevel@tonic-gate uintptr_t 5975aefb655Srie ld_do_activerelocs(Ofl_desc *ofl) 5987c478bd9Sstevel@tonic-gate { 599141040e8Srie Rel_desc *arsp; 600141040e8Srie Rel_cache *rcp; 601141040e8Srie Listnode *lnp; 6027c478bd9Sstevel@tonic-gate uintptr_t return_code = 1; 6037c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 6047c478bd9Sstevel@tonic-gate 6057010c12aSrie if (ofl->ofl_actrels.head) 6067010c12aSrie DBG_CALL(Dbg_reloc_doact_title(ofl->ofl_lml)); 6077010c12aSrie 6087c478bd9Sstevel@tonic-gate /* 609141040e8Srie * Process active relocations. 6107c478bd9Sstevel@tonic-gate */ 6117c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&ofl->ofl_actrels, lnp, rcp)) { 6127c478bd9Sstevel@tonic-gate /* LINTED */ 6137c478bd9Sstevel@tonic-gate for (arsp = (Rel_desc *)(rcp + 1); 6147c478bd9Sstevel@tonic-gate arsp < rcp->rc_free; arsp++) { 615b3fbe5e6Sseizo uchar_t *addr; 6167c478bd9Sstevel@tonic-gate Xword value; 6177c478bd9Sstevel@tonic-gate Sym_desc *sdp; 6187c478bd9Sstevel@tonic-gate const char *ifl_name; 6197c478bd9Sstevel@tonic-gate Xword refaddr; 6207c478bd9Sstevel@tonic-gate int moved = 0; 6217c478bd9Sstevel@tonic-gate Gotref gref; 6227c478bd9Sstevel@tonic-gate 6237c478bd9Sstevel@tonic-gate /* 6247c478bd9Sstevel@tonic-gate * If the section this relocation is against has been 6257c478bd9Sstevel@tonic-gate * discarded (-zignore), then discard (skip) the 6267c478bd9Sstevel@tonic-gate * relocation itself. 6277c478bd9Sstevel@tonic-gate */ 6287c478bd9Sstevel@tonic-gate if ((arsp->rel_isdesc->is_flags & FLG_IS_DISCARD) && 6297c478bd9Sstevel@tonic-gate ((arsp->rel_flags & 6307c478bd9Sstevel@tonic-gate (FLG_REL_GOT | FLG_REL_BSS | 6317c478bd9Sstevel@tonic-gate FLG_REL_PLT | FLG_REL_NOINFO)) == 0)) { 6325aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, 6335aefb655Srie M_MACH, arsp)); 6347c478bd9Sstevel@tonic-gate continue; 6357c478bd9Sstevel@tonic-gate } 6367c478bd9Sstevel@tonic-gate 6377c478bd9Sstevel@tonic-gate /* 6387c478bd9Sstevel@tonic-gate * We deteremine what the 'got reference' 6397c478bd9Sstevel@tonic-gate * model (if required) is at this point. This 6407c478bd9Sstevel@tonic-gate * needs to be done before tls_fixup() since 6417c478bd9Sstevel@tonic-gate * it may 'transition' our instructions. 6427c478bd9Sstevel@tonic-gate * 6437c478bd9Sstevel@tonic-gate * The got table entries have already been assigned, 6447c478bd9Sstevel@tonic-gate * and we bind to those initial entries. 6457c478bd9Sstevel@tonic-gate */ 6467c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_DTLS) 6477c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 6487c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_MTLS) 6497c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 6507c478bd9Sstevel@tonic-gate else if (arsp->rel_flags & FLG_REL_STLS) 6517c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 6527c478bd9Sstevel@tonic-gate else 6537c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 6547c478bd9Sstevel@tonic-gate 6557c478bd9Sstevel@tonic-gate /* 6567c478bd9Sstevel@tonic-gate * Perform any required TLS fixups. 6577c478bd9Sstevel@tonic-gate */ 6587c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_TLSFIX) { 6597c478bd9Sstevel@tonic-gate Fixupret ret; 660141040e8Srie 6615aefb655Srie if ((ret = tls_fixups(ofl, arsp)) == FIX_ERROR) 6627c478bd9Sstevel@tonic-gate return (S_ERROR); 6637c478bd9Sstevel@tonic-gate if (ret == FIX_DONE) 6647c478bd9Sstevel@tonic-gate continue; 6657c478bd9Sstevel@tonic-gate } 6667c478bd9Sstevel@tonic-gate 6677c478bd9Sstevel@tonic-gate /* 6687c478bd9Sstevel@tonic-gate * If this is a relocation against a move table, or 6697c478bd9Sstevel@tonic-gate * expanded move table, adjust the relocation entries. 6707c478bd9Sstevel@tonic-gate */ 6717c478bd9Sstevel@tonic-gate if (arsp->rel_move) 6725aefb655Srie ld_adj_movereloc(ofl, arsp); 6737c478bd9Sstevel@tonic-gate 6747c478bd9Sstevel@tonic-gate sdp = arsp->rel_sym; 6757c478bd9Sstevel@tonic-gate refaddr = arsp->rel_roffset + 6767c478bd9Sstevel@tonic-gate (Off)_elf_getxoff(arsp->rel_isdesc->is_indata); 6777c478bd9Sstevel@tonic-gate 6787c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_CLVAL) || 6797c478bd9Sstevel@tonic-gate (arsp->rel_flags & FLG_REL_GOTCL)) 6807c478bd9Sstevel@tonic-gate value = 0; 6817c478bd9Sstevel@tonic-gate else if (ELF_ST_TYPE(sdp->sd_sym->st_info) == 6827c478bd9Sstevel@tonic-gate STT_SECTION) { 683141040e8Srie Sym_desc *sym; 6847c478bd9Sstevel@tonic-gate 6857c478bd9Sstevel@tonic-gate /* 6867c478bd9Sstevel@tonic-gate * The value for a symbol pointing to a SECTION 6877c478bd9Sstevel@tonic-gate * is based off of that sections position. 6887c478bd9Sstevel@tonic-gate * 6895aefb655Srie * The second argument of the ld_am_I_partial() 6905aefb655Srie * is the value stored at the target address 6917c478bd9Sstevel@tonic-gate * relocation is going to be applied. 6927c478bd9Sstevel@tonic-gate */ 6937c478bd9Sstevel@tonic-gate if ((sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 6947c478bd9Sstevel@tonic-gate /* LINTED */ 6955aefb655Srie (sym = ld_am_I_partial(arsp, *(Xword *) 696b3fbe5e6Sseizo ((uchar_t *) 697b3fbe5e6Sseizo arsp->rel_isdesc->is_indata->d_buf + 6987c478bd9Sstevel@tonic-gate arsp->rel_roffset)))) { 6997c478bd9Sstevel@tonic-gate /* 7007c478bd9Sstevel@tonic-gate * If the symbol is moved, 7017c478bd9Sstevel@tonic-gate * adjust the value 7027c478bd9Sstevel@tonic-gate */ 7037c478bd9Sstevel@tonic-gate value = sym->sd_sym->st_value; 7047c478bd9Sstevel@tonic-gate moved = 1; 7057c478bd9Sstevel@tonic-gate } else { 706141040e8Srie value = _elf_getxoff( 707141040e8Srie sdp->sd_isc->is_indata); 7087c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & 7097c478bd9Sstevel@tonic-gate SHF_ALLOC) 710de777a60Sab value += 711de777a60Sab sdp->sd_isc->is_osdesc-> 712de777a60Sab os_shdr->sh_addr; 7137c478bd9Sstevel@tonic-gate } 7147c478bd9Sstevel@tonic-gate if (sdp->sd_isc->is_shdr->sh_flags & SHF_TLS) 7157c478bd9Sstevel@tonic-gate value -= ofl->ofl_tlsphdr->p_vaddr; 7162926dd2eSrie 7172926dd2eSrie } else if (IS_SIZE(arsp->rel_rtype)) { 7182926dd2eSrie /* 7192926dd2eSrie * Size relocations require the symbols size. 7202926dd2eSrie */ 7212926dd2eSrie value = sdp->sd_sym->st_size; 722141040e8Srie } else { 7237c478bd9Sstevel@tonic-gate /* 7247010c12aSrie * Else the value is the symbols value. 7257c478bd9Sstevel@tonic-gate */ 7267c478bd9Sstevel@tonic-gate value = sdp->sd_sym->st_value; 727141040e8Srie } 7287c478bd9Sstevel@tonic-gate 7297c478bd9Sstevel@tonic-gate /* 7307c478bd9Sstevel@tonic-gate * Relocation against the GLOBAL_OFFSET_TABLE. 7317c478bd9Sstevel@tonic-gate */ 7327c478bd9Sstevel@tonic-gate if (arsp->rel_flags & FLG_REL_GOT) 7337c478bd9Sstevel@tonic-gate arsp->rel_osdesc = ofl->ofl_osgot; 7347c478bd9Sstevel@tonic-gate 7357c478bd9Sstevel@tonic-gate /* 7367c478bd9Sstevel@tonic-gate * If loadable and not producing a relocatable object 7377c478bd9Sstevel@tonic-gate * add the sections virtual address to the reference 7387c478bd9Sstevel@tonic-gate * address. 7397c478bd9Sstevel@tonic-gate */ 7407c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_LOAD) && 741141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) 7427c478bd9Sstevel@tonic-gate refaddr += arsp->rel_isdesc->is_osdesc-> 7437c478bd9Sstevel@tonic-gate os_shdr->sh_addr; 7447c478bd9Sstevel@tonic-gate 7457c478bd9Sstevel@tonic-gate /* 7467c478bd9Sstevel@tonic-gate * If this entry has a PLT assigned to it, it's 7477c478bd9Sstevel@tonic-gate * value is actually the address of the PLT (and 7487c478bd9Sstevel@tonic-gate * not the address of the function). 7497c478bd9Sstevel@tonic-gate */ 7507c478bd9Sstevel@tonic-gate if (IS_PLT(arsp->rel_rtype)) { 7517c478bd9Sstevel@tonic-gate if (sdp->sd_aux && sdp->sd_aux->sa_PLTndx) 7525aefb655Srie value = ld_calc_plt_addr(sdp, ofl); 7537c478bd9Sstevel@tonic-gate } 7547c478bd9Sstevel@tonic-gate 7557c478bd9Sstevel@tonic-gate /* 7567c478bd9Sstevel@tonic-gate * Add relocations addend to value. Add extra 7577c478bd9Sstevel@tonic-gate * relocation addend if needed. 7587c478bd9Sstevel@tonic-gate * 7597c478bd9Sstevel@tonic-gate * Note: for GOT relative relocations on amd64 7607c478bd9Sstevel@tonic-gate * we discard the addend. It was relevant 7617c478bd9Sstevel@tonic-gate * to the reference - not to the data item 7627c478bd9Sstevel@tonic-gate * being referenced (ie: that -4 thing). 7637c478bd9Sstevel@tonic-gate */ 7647c478bd9Sstevel@tonic-gate if ((arsp->rel_flags & FLG_REL_GOT) == 0) 7657c478bd9Sstevel@tonic-gate value += arsp->rel_raddend; 7667c478bd9Sstevel@tonic-gate 767141040e8Srie /* 768141040e8Srie * Determine whether the value needs further adjustment. 769141040e8Srie * Filter through the attributes of the relocation to 770141040e8Srie * determine what adjustment is required. Note, many 771141040e8Srie * of the following cases are only applicable when a 772141040e8Srie * .got is present. As a .got is not generated when a 773141040e8Srie * relocatable object is being built, any adjustments 774141040e8Srie * that require a .got need to be skipped. 775141040e8Srie */ 776141040e8Srie if ((arsp->rel_flags & FLG_REL_GOT) && 777141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 7787c478bd9Sstevel@tonic-gate Xword R1addr; 7797c478bd9Sstevel@tonic-gate uintptr_t R2addr; 7807c478bd9Sstevel@tonic-gate Word gotndx; 7817c478bd9Sstevel@tonic-gate Gotndx *gnp; 7827c478bd9Sstevel@tonic-gate 7837c478bd9Sstevel@tonic-gate /* 7847c478bd9Sstevel@tonic-gate * Perform relocation against GOT table. Since 7857c478bd9Sstevel@tonic-gate * this doesn't fit exactly into a relocation 7867c478bd9Sstevel@tonic-gate * we place the appropriate byte in the GOT 7877c478bd9Sstevel@tonic-gate * directly 7887c478bd9Sstevel@tonic-gate * 7897c478bd9Sstevel@tonic-gate * Calculate offset into GOT at which to apply 7907c478bd9Sstevel@tonic-gate * the relocation. 7917c478bd9Sstevel@tonic-gate */ 7925aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, 7937c478bd9Sstevel@tonic-gate ofl, arsp); 7947c478bd9Sstevel@tonic-gate assert(gnp); 7957c478bd9Sstevel@tonic-gate 7967c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_AMD64_DTPOFF64) 7977c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx + 1; 7987c478bd9Sstevel@tonic-gate else 7997c478bd9Sstevel@tonic-gate gotndx = gnp->gn_gotndx; 8007c478bd9Sstevel@tonic-gate 8017c478bd9Sstevel@tonic-gate R1addr = (Xword)(gotndx * M_GOT_ENTSIZE); 8027c478bd9Sstevel@tonic-gate 8037c478bd9Sstevel@tonic-gate /* 8047c478bd9Sstevel@tonic-gate * Add the GOTs data's offset. 8057c478bd9Sstevel@tonic-gate */ 8067c478bd9Sstevel@tonic-gate R2addr = R1addr + (uintptr_t) 8077c478bd9Sstevel@tonic-gate arsp->rel_osdesc->os_outdata->d_buf; 8087c478bd9Sstevel@tonic-gate 8095aefb655Srie DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, 8105aefb655Srie ELF_DBG_LD, M_MACH, SHT_RELA, 8117c478bd9Sstevel@tonic-gate arsp->rel_rtype, R1addr, value, 8127c478bd9Sstevel@tonic-gate arsp->rel_sname, arsp->rel_osdesc)); 8137c478bd9Sstevel@tonic-gate 8147c478bd9Sstevel@tonic-gate /* 8157c478bd9Sstevel@tonic-gate * And do it. 8167c478bd9Sstevel@tonic-gate */ 817*f3324781Sab if (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) 818*f3324781Sab *(Xword *)R2addr = 819*f3324781Sab ld_byteswap_Xword(value); 820*f3324781Sab else 821*f3324781Sab *(Xword *)R2addr = value; 8227c478bd9Sstevel@tonic-gate continue; 8237c478bd9Sstevel@tonic-gate 824141040e8Srie } else if (IS_GOT_BASED(arsp->rel_rtype) && 825141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8267c478bd9Sstevel@tonic-gate value -= ofl->ofl_osgot->os_shdr->sh_addr; 827141040e8Srie 828141040e8Srie } else if (IS_GOTPCREL(arsp->rel_rtype) && 829141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 830141040e8Srie Gotndx *gnp; 831141040e8Srie 8327c478bd9Sstevel@tonic-gate /* 8337c478bd9Sstevel@tonic-gate * Calculation: 8347c478bd9Sstevel@tonic-gate * G + GOT + A - P 8357c478bd9Sstevel@tonic-gate */ 8365aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 8377c478bd9Sstevel@tonic-gate gref, ofl, arsp); 838141040e8Srie assert(gnp); 8397c478bd9Sstevel@tonic-gate value = (Xword)(ofl->ofl_osgot->os_shdr-> 8407c478bd9Sstevel@tonic-gate sh_addr) + ((Xword)gnp->gn_gotndx * 8417c478bd9Sstevel@tonic-gate M_GOT_ENTSIZE) + arsp->rel_raddend - 8427c478bd9Sstevel@tonic-gate refaddr; 843141040e8Srie 844141040e8Srie } else if (IS_GOT_PC(arsp->rel_rtype) && 845141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 846141040e8Srie value = (Xword)(ofl->ofl_osgot->os_shdr-> 84754d82594Sseizo sh_addr) - refaddr + arsp->rel_raddend; 848141040e8Srie 8497c478bd9Sstevel@tonic-gate } else if ((IS_PC_RELATIVE(arsp->rel_rtype)) && 850141040e8Srie (((flags & FLG_OF_RELOBJ) == 0) || 8517c478bd9Sstevel@tonic-gate (arsp->rel_osdesc == sdp->sd_isc->is_osdesc))) { 8527c478bd9Sstevel@tonic-gate value -= refaddr; 853141040e8Srie 8547c478bd9Sstevel@tonic-gate } else if (IS_TLS_INS(arsp->rel_rtype) && 855141040e8Srie IS_GOT_RELATIVE(arsp->rel_rtype) && 856141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8577c478bd9Sstevel@tonic-gate Gotndx *gnp; 8587c478bd9Sstevel@tonic-gate 8595aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, 8607c478bd9Sstevel@tonic-gate ofl, arsp); 861141040e8Srie assert(gnp); 8627c478bd9Sstevel@tonic-gate value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 863141040e8Srie 864141040e8Srie } else if (IS_GOT_RELATIVE(arsp->rel_rtype) && 865141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 866141040e8Srie Gotndx *gnp; 8677c478bd9Sstevel@tonic-gate 8685aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 8697c478bd9Sstevel@tonic-gate gref, ofl, arsp); 8707c478bd9Sstevel@tonic-gate assert(gnp); 8717c478bd9Sstevel@tonic-gate value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 872141040e8Srie 873141040e8Srie } else if ((arsp->rel_flags & FLG_REL_STLS) && 874141040e8Srie ((flags & FLG_OF_RELOBJ) == 0)) { 8757c478bd9Sstevel@tonic-gate Xword tlsstatsize; 876141040e8Srie 8777c478bd9Sstevel@tonic-gate /* 8787c478bd9Sstevel@tonic-gate * This is the LE TLS reference model. Static 8797c478bd9Sstevel@tonic-gate * offset is hard-coded. 8807c478bd9Sstevel@tonic-gate */ 881141040e8Srie tlsstatsize = 882141040e8Srie S_ROUND(ofl->ofl_tlsphdr->p_memsz, 8837c478bd9Sstevel@tonic-gate M_TLSSTATALIGN); 8847c478bd9Sstevel@tonic-gate value = tlsstatsize - value; 885141040e8Srie 8867c478bd9Sstevel@tonic-gate /* 887141040e8Srie * Since this code is fixed up, it assumes a 888141040e8Srie * negative offset that can be added to the 889141040e8Srie * thread pointer. 8907c478bd9Sstevel@tonic-gate */ 8917c478bd9Sstevel@tonic-gate if (arsp->rel_rtype == R_AMD64_TPOFF32) 8927c478bd9Sstevel@tonic-gate value = -value; 8937c478bd9Sstevel@tonic-gate } 8947c478bd9Sstevel@tonic-gate 8957c478bd9Sstevel@tonic-gate if (arsp->rel_isdesc->is_file) 8967c478bd9Sstevel@tonic-gate ifl_name = arsp->rel_isdesc->is_file->ifl_name; 8977c478bd9Sstevel@tonic-gate else 8987c478bd9Sstevel@tonic-gate ifl_name = MSG_INTL(MSG_STR_NULL); 8997c478bd9Sstevel@tonic-gate 9007c478bd9Sstevel@tonic-gate /* 9017c478bd9Sstevel@tonic-gate * Make sure we have data to relocate. Compiler and 9027c478bd9Sstevel@tonic-gate * assembler developers have been known to generate 9037c478bd9Sstevel@tonic-gate * relocations against invalid sections (normally .bss), 9047c478bd9Sstevel@tonic-gate * so for their benefit give them sufficient information 9057c478bd9Sstevel@tonic-gate * to help analyze the problem. End users should never 9067c478bd9Sstevel@tonic-gate * see this. 9077c478bd9Sstevel@tonic-gate */ 9087c478bd9Sstevel@tonic-gate if (arsp->rel_isdesc->is_indata->d_buf == 0) { 909de777a60Sab Conv_inv_buf_t inv_buf; 910de777a60Sab 9115aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, 9125aefb655Srie MSG_INTL(MSG_REL_EMPTYSEC), 913de777a60Sab conv_reloc_amd64_type(arsp->rel_rtype, 914de777a60Sab 0, &inv_buf), ifl_name, 915de777a60Sab 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)) { 935de777a60Sab int class; 936de777a60Sab Conv_inv_buf_t inv_buf; 9377c478bd9Sstevel@tonic-gate 938b3fbe5e6Sseizo if (((uintptr_t)addr - 9395aefb655Srie (uintptr_t)ofl->ofl_nehdr) > ofl->ofl_size) 9407c478bd9Sstevel@tonic-gate class = ERR_FATAL; 9417c478bd9Sstevel@tonic-gate else 9427c478bd9Sstevel@tonic-gate class = ERR_WARNING; 9437c478bd9Sstevel@tonic-gate 9445aefb655Srie eprintf(ofl->ofl_lml, class, 9455aefb655Srie MSG_INTL(MSG_REL_INVALOFFSET), 946de777a60Sab conv_reloc_amd64_type(arsp->rel_rtype, 947de777a60Sab 0, &inv_buf), ifl_name, 948de777a60Sab arsp->rel_isdesc->is_name, 9497c478bd9Sstevel@tonic-gate demangle(arsp->rel_sname), 9507c478bd9Sstevel@tonic-gate EC_ADDR((uintptr_t)addr - 9515aefb655Srie (uintptr_t)ofl->ofl_nehdr)); 9527c478bd9Sstevel@tonic-gate 9537c478bd9Sstevel@tonic-gate if (class == ERR_FATAL) { 9547c478bd9Sstevel@tonic-gate return_code = S_ERROR; 9557c478bd9Sstevel@tonic-gate continue; 9567c478bd9Sstevel@tonic-gate } 9577c478bd9Sstevel@tonic-gate } 9587c478bd9Sstevel@tonic-gate 9597c478bd9Sstevel@tonic-gate /* 9607c478bd9Sstevel@tonic-gate * The relocation is additive. Ignore the previous 9617c478bd9Sstevel@tonic-gate * symbol value if this local partial symbol is 9627c478bd9Sstevel@tonic-gate * expanded. 9637c478bd9Sstevel@tonic-gate */ 9647c478bd9Sstevel@tonic-gate if (moved) 9657c478bd9Sstevel@tonic-gate value -= *addr; 9667c478bd9Sstevel@tonic-gate 9677c478bd9Sstevel@tonic-gate /* 968*f3324781Sab * If '-z noreloc' is specified - skip the do_reloc_ld 9697c478bd9Sstevel@tonic-gate * stage. 9707c478bd9Sstevel@tonic-gate */ 971*f3324781Sab if (OFL_DO_RELOC(ofl)) { 972*f3324781Sab /* 973*f3324781Sab * If this is a PROGBITS section and the 974*f3324781Sab * running linker has a different byte order 975*f3324781Sab * than the target host, tell do_reloc_ld() 976*f3324781Sab * to swap bytes. 977*f3324781Sab */ 978*f3324781Sab if (do_reloc_ld((uchar_t)arsp->rel_rtype, 9795aefb655Srie addr, &value, arsp->rel_sname, ifl_name, 980*f3324781Sab OFL_SWAP_RELOC_DATA(ofl, arsp), 9815aefb655Srie ofl->ofl_lml) == 0) 9827c478bd9Sstevel@tonic-gate return_code = S_ERROR; 9837c478bd9Sstevel@tonic-gate } 9847c478bd9Sstevel@tonic-gate } 9857c478bd9Sstevel@tonic-gate } 9867c478bd9Sstevel@tonic-gate return (return_code); 9877c478bd9Sstevel@tonic-gate } 9887c478bd9Sstevel@tonic-gate 9897c478bd9Sstevel@tonic-gate uintptr_t 9905aefb655Srie ld_add_outrel(Word flags, Rel_desc *rsp, Ofl_desc *ofl) 9917c478bd9Sstevel@tonic-gate { 992141040e8Srie Rel_desc *orsp; 993141040e8Srie Rel_cache *rcp; 994141040e8Srie Sym_desc *sdp = rsp->rel_sym; 9957c478bd9Sstevel@tonic-gate 9967c478bd9Sstevel@tonic-gate /* 9977c478bd9Sstevel@tonic-gate * Static executables *do not* want any relocations against them. 9987c478bd9Sstevel@tonic-gate * Since our engine still creates relocations against a WEAK UNDEFINED 9997c478bd9Sstevel@tonic-gate * symbol in a static executable, it's best to disable them here 10007c478bd9Sstevel@tonic-gate * instead of through out the relocation code. 10017c478bd9Sstevel@tonic-gate */ 10027c478bd9Sstevel@tonic-gate if ((ofl->ofl_flags & (FLG_OF_STATIC | FLG_OF_EXEC)) == 10037c478bd9Sstevel@tonic-gate (FLG_OF_STATIC | FLG_OF_EXEC)) 10047c478bd9Sstevel@tonic-gate return (1); 10057c478bd9Sstevel@tonic-gate 10067c478bd9Sstevel@tonic-gate /* 10077c478bd9Sstevel@tonic-gate * If no relocation cache structures are available allocate 10087c478bd9Sstevel@tonic-gate * a new one and link it into the cache list. 10097c478bd9Sstevel@tonic-gate */ 10107c478bd9Sstevel@tonic-gate if ((ofl->ofl_outrels.tail == 0) || 10117c478bd9Sstevel@tonic-gate ((rcp = (Rel_cache *)ofl->ofl_outrels.tail->data) == 0) || 10127c478bd9Sstevel@tonic-gate ((orsp = rcp->rc_free) == rcp->rc_end)) { 10137c478bd9Sstevel@tonic-gate static size_t nextsize = 0; 10147c478bd9Sstevel@tonic-gate size_t size; 10157c478bd9Sstevel@tonic-gate 10167c478bd9Sstevel@tonic-gate /* 10177c478bd9Sstevel@tonic-gate * Output relocation numbers can vary considerably between 10187c478bd9Sstevel@tonic-gate * building executables or shared objects (pic vs. non-pic), 10197c478bd9Sstevel@tonic-gate * etc. But, they typically aren't very large, so for these 10207c478bd9Sstevel@tonic-gate * objects use a standard bucket size. For building relocatable 10217c478bd9Sstevel@tonic-gate * objects, typically there will be an output relocation for 10227c478bd9Sstevel@tonic-gate * every input relocation. 10237c478bd9Sstevel@tonic-gate */ 10247c478bd9Sstevel@tonic-gate if (nextsize == 0) { 10257c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_RELOBJ) { 10267c478bd9Sstevel@tonic-gate if ((size = ofl->ofl_relocincnt) == 0) 10277c478bd9Sstevel@tonic-gate size = REL_LOIDESCNO; 10287c478bd9Sstevel@tonic-gate if (size > REL_HOIDESCNO) 10297c478bd9Sstevel@tonic-gate nextsize = REL_HOIDESCNO; 10307c478bd9Sstevel@tonic-gate else 10317c478bd9Sstevel@tonic-gate nextsize = REL_LOIDESCNO; 10327c478bd9Sstevel@tonic-gate } else 10337c478bd9Sstevel@tonic-gate nextsize = size = REL_HOIDESCNO; 10347c478bd9Sstevel@tonic-gate } else 10357c478bd9Sstevel@tonic-gate size = nextsize; 10367c478bd9Sstevel@tonic-gate 10377c478bd9Sstevel@tonic-gate size = size * sizeof (Rel_desc); 10387c478bd9Sstevel@tonic-gate 10397c478bd9Sstevel@tonic-gate if (((rcp = libld_malloc(sizeof (Rel_cache) + size)) == 0) || 10407c478bd9Sstevel@tonic-gate (list_appendc(&ofl->ofl_outrels, rcp) == 0)) 10417c478bd9Sstevel@tonic-gate return (S_ERROR); 10427c478bd9Sstevel@tonic-gate 10437c478bd9Sstevel@tonic-gate /* LINTED */ 10447c478bd9Sstevel@tonic-gate rcp->rc_free = orsp = (Rel_desc *)(rcp + 1); 10457c478bd9Sstevel@tonic-gate /* LINTED */ 10467c478bd9Sstevel@tonic-gate rcp->rc_end = (Rel_desc *)((char *)rcp->rc_free + size); 10477c478bd9Sstevel@tonic-gate } 10487c478bd9Sstevel@tonic-gate 10497c478bd9Sstevel@tonic-gate /* 10507c478bd9Sstevel@tonic-gate * If we are adding a output relocation against a section 10517c478bd9Sstevel@tonic-gate * symbol (non-RELATIVE) then mark that section. These sections 10527c478bd9Sstevel@tonic-gate * will be added to the .dynsym symbol table. 10537c478bd9Sstevel@tonic-gate */ 10547c478bd9Sstevel@tonic-gate if (sdp && (rsp->rel_rtype != M_R_RELATIVE) && 10557c478bd9Sstevel@tonic-gate ((flags & FLG_REL_SCNNDX) || 10567c478bd9Sstevel@tonic-gate (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION))) { 10577c478bd9Sstevel@tonic-gate 10587c478bd9Sstevel@tonic-gate /* 10597c478bd9Sstevel@tonic-gate * If this is a COMMON symbol - no output section 10607c478bd9Sstevel@tonic-gate * exists yet - (it's created as part of sym_validate()). 10617c478bd9Sstevel@tonic-gate * So - we mark here that when it's created it should 10627c478bd9Sstevel@tonic-gate * be tagged with the FLG_OS_OUTREL flag. 10637c478bd9Sstevel@tonic-gate */ 10647c478bd9Sstevel@tonic-gate if ((sdp->sd_flags & FLG_SY_SPECSEC) && 10650bc07c75Srie (sdp->sd_sym->st_shndx == SHN_COMMON)) { 10667c478bd9Sstevel@tonic-gate if (ELF_ST_TYPE(sdp->sd_sym->st_info) != STT_TLS) 10677c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_BSSOREL; 10687c478bd9Sstevel@tonic-gate else 10697c478bd9Sstevel@tonic-gate ofl->ofl_flags1 |= FLG_OF1_TLSOREL; 1070141040e8Srie } else { 1071141040e8Srie Os_desc *osp = sdp->sd_isc->is_osdesc; 10727c478bd9Sstevel@tonic-gate 1073c1c6f601Srie if (osp && ((osp->os_flags & FLG_OS_OUTREL) == 0)) { 10747c478bd9Sstevel@tonic-gate ofl->ofl_dynshdrcnt++; 10757c478bd9Sstevel@tonic-gate osp->os_flags |= FLG_OS_OUTREL; 10767c478bd9Sstevel@tonic-gate } 10777c478bd9Sstevel@tonic-gate } 10787c478bd9Sstevel@tonic-gate } 10797c478bd9Sstevel@tonic-gate 10807c478bd9Sstevel@tonic-gate *orsp = *rsp; 10817c478bd9Sstevel@tonic-gate orsp->rel_flags |= flags; 10827c478bd9Sstevel@tonic-gate 10837c478bd9Sstevel@tonic-gate rcp->rc_free++; 10847c478bd9Sstevel@tonic-gate ofl->ofl_outrelscnt++; 10857c478bd9Sstevel@tonic-gate 10867c478bd9Sstevel@tonic-gate if (flags & FLG_REL_GOT) 10877c478bd9Sstevel@tonic-gate ofl->ofl_relocgotsz += (Xword)sizeof (Rela); 10887c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_PLT) 10897c478bd9Sstevel@tonic-gate ofl->ofl_relocpltsz += (Xword)sizeof (Rela); 10907c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_BSS) 10917c478bd9Sstevel@tonic-gate ofl->ofl_relocbsssz += (Xword)sizeof (Rela); 10927c478bd9Sstevel@tonic-gate else if (flags & FLG_REL_NOINFO) 10937c478bd9Sstevel@tonic-gate ofl->ofl_relocrelsz += (Xword)sizeof (Rela); 10947c478bd9Sstevel@tonic-gate else 10957c478bd9Sstevel@tonic-gate orsp->rel_osdesc->os_szoutrels += (Xword)sizeof (Rela); 10967c478bd9Sstevel@tonic-gate 10977c478bd9Sstevel@tonic-gate if (orsp->rel_rtype == M_R_RELATIVE) 10987c478bd9Sstevel@tonic-gate ofl->ofl_relocrelcnt++; 10997c478bd9Sstevel@tonic-gate 11007c478bd9Sstevel@tonic-gate /* 11017c478bd9Sstevel@tonic-gate * We don't perform sorting on PLT relocations because 11027c478bd9Sstevel@tonic-gate * they have already been assigned a PLT index and if we 11037c478bd9Sstevel@tonic-gate * were to sort them we would have to re-assign the plt indexes. 11047c478bd9Sstevel@tonic-gate */ 11057c478bd9Sstevel@tonic-gate if (!(flags & FLG_REL_PLT)) 11067c478bd9Sstevel@tonic-gate ofl->ofl_reloccnt++; 11077c478bd9Sstevel@tonic-gate 1108141040e8Srie /* 1109141040e8Srie * Insure a GLOBAL_OFFSET_TABLE is generated if required. 1110141040e8Srie */ 1111141040e8Srie if (IS_GOT_REQUIRED(orsp->rel_rtype)) 1112141040e8Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 1113141040e8Srie 11147c478bd9Sstevel@tonic-gate /* 11157c478bd9Sstevel@tonic-gate * Identify and possibly warn of a displacement relocation. 11167c478bd9Sstevel@tonic-gate */ 11177c478bd9Sstevel@tonic-gate if (orsp->rel_flags & FLG_REL_DISP) { 11187c478bd9Sstevel@tonic-gate ofl->ofl_dtflags_1 |= DF_1_DISPRELPND; 11197c478bd9Sstevel@tonic-gate 11207c478bd9Sstevel@tonic-gate if (ofl->ofl_flags & FLG_OF_VERBOSE) 11215aefb655Srie ld_disp_errmsg(MSG_INTL(MSG_REL_DISPREL4), orsp, ofl); 11227c478bd9Sstevel@tonic-gate } 11235aefb655Srie DBG_CALL(Dbg_reloc_ors_entry(ofl->ofl_lml, ELF_DBG_LD, SHT_RELA, 11245aefb655Srie M_MACH, orsp)); 11257c478bd9Sstevel@tonic-gate return (1); 11267c478bd9Sstevel@tonic-gate } 11277c478bd9Sstevel@tonic-gate 11287c478bd9Sstevel@tonic-gate /* 11297c478bd9Sstevel@tonic-gate * Stub routine since register symbols are not supported on amd64. 11307c478bd9Sstevel@tonic-gate */ 11317c478bd9Sstevel@tonic-gate /* ARGSUSED */ 11327c478bd9Sstevel@tonic-gate uintptr_t 11335aefb655Srie ld_reloc_register(Rel_desc * rsp, Is_desc * isp, Ofl_desc * ofl) 11347c478bd9Sstevel@tonic-gate { 11355aefb655Srie eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_REL_NOREG)); 11367c478bd9Sstevel@tonic-gate return (S_ERROR); 11377c478bd9Sstevel@tonic-gate } 11387c478bd9Sstevel@tonic-gate 11397c478bd9Sstevel@tonic-gate /* 11407c478bd9Sstevel@tonic-gate * process relocation for a LOCAL symbol 11417c478bd9Sstevel@tonic-gate */ 11427c478bd9Sstevel@tonic-gate uintptr_t 11435aefb655Srie ld_reloc_local(Rel_desc * rsp, Ofl_desc * ofl) 11447c478bd9Sstevel@tonic-gate { 11457c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 11467c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 11470bc07c75Srie Word shndx = sdp->sd_sym->st_shndx; 11487c478bd9Sstevel@tonic-gate Word ortype = rsp->rel_rtype; 11497c478bd9Sstevel@tonic-gate 11507c478bd9Sstevel@tonic-gate /* 11517c478bd9Sstevel@tonic-gate * if ((shared object) and (not pc relative relocation) and 11527c478bd9Sstevel@tonic-gate * (not against ABS symbol)) 11537c478bd9Sstevel@tonic-gate * then 11547c478bd9Sstevel@tonic-gate * build R_AMD64_RELATIVE 11557c478bd9Sstevel@tonic-gate * fi 11567c478bd9Sstevel@tonic-gate */ 11577c478bd9Sstevel@tonic-gate if ((flags & FLG_OF_SHAROBJ) && (rsp->rel_flags & FLG_REL_LOAD) && 11582926dd2eSrie !(IS_PC_RELATIVE(rsp->rel_rtype)) && !(IS_SIZE(rsp->rel_rtype)) && 11597c478bd9Sstevel@tonic-gate !(IS_GOT_BASED(rsp->rel_rtype)) && 11607c478bd9Sstevel@tonic-gate !(rsp->rel_isdesc != NULL && 11617c478bd9Sstevel@tonic-gate (rsp->rel_isdesc->is_shdr->sh_type == SHT_SUNW_dof)) && 11627c478bd9Sstevel@tonic-gate (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) || 11637c478bd9Sstevel@tonic-gate (shndx != SHN_ABS) || (sdp->sd_aux && sdp->sd_aux->sa_symspec))) { 11647c478bd9Sstevel@tonic-gate 11657c478bd9Sstevel@tonic-gate /* 11667c478bd9Sstevel@tonic-gate * R_AMD64_RELATIVE updates a 64bit address, if this 11677c478bd9Sstevel@tonic-gate * relocation isn't a 64bit binding then we can not 11687c478bd9Sstevel@tonic-gate * simplify it to a RELATIVE relocation. 11697c478bd9Sstevel@tonic-gate */ 11707c478bd9Sstevel@tonic-gate if (reloc_table[ortype].re_fsize != sizeof (Addr)) { 11715aefb655Srie return (ld_add_outrel(NULL, rsp, ofl)); 11727c478bd9Sstevel@tonic-gate } 11737c478bd9Sstevel@tonic-gate 11747c478bd9Sstevel@tonic-gate rsp->rel_rtype = R_AMD64_RELATIVE; 11755aefb655Srie if (ld_add_outrel(FLG_REL_ADVAL, rsp, ofl) == S_ERROR) 11767c478bd9Sstevel@tonic-gate return (S_ERROR); 11777c478bd9Sstevel@tonic-gate rsp->rel_rtype = ortype; 11787c478bd9Sstevel@tonic-gate return (1); 11797c478bd9Sstevel@tonic-gate } 11807c478bd9Sstevel@tonic-gate 1181b3fbe5e6Sseizo /* 1182b3fbe5e6Sseizo * If the relocation is against a 'non-allocatable' section 1183b3fbe5e6Sseizo * and we can not resolve it now - then give a warning 1184b3fbe5e6Sseizo * message. 1185b3fbe5e6Sseizo * 1186b3fbe5e6Sseizo * We can not resolve the symbol if either: 1187b3fbe5e6Sseizo * a) it's undefined 1188b3fbe5e6Sseizo * b) it's defined in a shared library and a 1189b3fbe5e6Sseizo * COPY relocation hasn't moved it to the executable 1190b3fbe5e6Sseizo * 1191b3fbe5e6Sseizo * Note: because we process all of the relocations against the 1192b3fbe5e6Sseizo * text segment before any others - we know whether 1193b3fbe5e6Sseizo * or not a copy relocation will be generated before 1194b3fbe5e6Sseizo * we get here (see reloc_init()->reloc_segments()). 1195b3fbe5e6Sseizo */ 11967c478bd9Sstevel@tonic-gate if (!(rsp->rel_flags & FLG_REL_LOAD) && 1197b3fbe5e6Sseizo ((shndx == SHN_UNDEF) || 1198b3fbe5e6Sseizo ((sdp->sd_ref == REF_DYN_NEED) && 1199b3fbe5e6Sseizo ((sdp->sd_flags & FLG_SY_MVTOCOMM) == 0)))) { 1200de777a60Sab Conv_inv_buf_t inv_buf; 1201de777a60Sab 1202b3fbe5e6Sseizo /* 1203b3fbe5e6Sseizo * If the relocation is against a SHT_SUNW_ANNOTATE 1204b3fbe5e6Sseizo * section - then silently ignore that the relocation 1205b3fbe5e6Sseizo * can not be resolved. 1206b3fbe5e6Sseizo */ 1207b3fbe5e6Sseizo if (rsp->rel_osdesc && 1208b3fbe5e6Sseizo (rsp->rel_osdesc->os_shdr->sh_type == SHT_SUNW_ANNOTATE)) 1209b3fbe5e6Sseizo return (0); 12105aefb655Srie (void) eprintf(ofl->ofl_lml, ERR_WARNING, 12115aefb655Srie MSG_INTL(MSG_REL_EXTERNSYM), 1212de777a60Sab conv_reloc_amd64_type(rsp->rel_rtype, 0, &inv_buf), 12137c478bd9Sstevel@tonic-gate rsp->rel_isdesc->is_file->ifl_name, 12147c478bd9Sstevel@tonic-gate demangle(rsp->rel_sname), rsp->rel_osdesc->os_name); 12157c478bd9Sstevel@tonic-gate return (1); 12167c478bd9Sstevel@tonic-gate } 12177c478bd9Sstevel@tonic-gate 12187c478bd9Sstevel@tonic-gate /* 12197c478bd9Sstevel@tonic-gate * Perform relocation. 12207c478bd9Sstevel@tonic-gate */ 12215aefb655Srie return (ld_add_actrel(NULL, rsp, ofl)); 12227c478bd9Sstevel@tonic-gate } 12237c478bd9Sstevel@tonic-gate 12247c478bd9Sstevel@tonic-gate 12257c478bd9Sstevel@tonic-gate uintptr_t 12267c478bd9Sstevel@tonic-gate /* ARGSUSED */ 12275aefb655Srie ld_reloc_GOTOP(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 12287c478bd9Sstevel@tonic-gate { 12297c478bd9Sstevel@tonic-gate /* 12307c478bd9Sstevel@tonic-gate * Stub routine for common code compatibility, we shouldn't 12317c478bd9Sstevel@tonic-gate * actually get here on amd64. 12327c478bd9Sstevel@tonic-gate */ 1233d326b23bSrie assert(0); 12347c478bd9Sstevel@tonic-gate return (S_ERROR); 12357c478bd9Sstevel@tonic-gate } 12367c478bd9Sstevel@tonic-gate 12377c478bd9Sstevel@tonic-gate uintptr_t 12385aefb655Srie ld_reloc_TLS(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 12397c478bd9Sstevel@tonic-gate { 12407c478bd9Sstevel@tonic-gate Word rtype = rsp->rel_rtype; 12417c478bd9Sstevel@tonic-gate Sym_desc *sdp = rsp->rel_sym; 12427c478bd9Sstevel@tonic-gate Word flags = ofl->ofl_flags; 12437c478bd9Sstevel@tonic-gate Gotndx *gnp; 12447c478bd9Sstevel@tonic-gate 12457c478bd9Sstevel@tonic-gate /* 1246d326b23bSrie * If we're building an executable - use either the IE or LE access 1247d326b23bSrie * model. If we're building a shared object process any IE model. 12487c478bd9Sstevel@tonic-gate */ 1249d326b23bSrie if ((flags & FLG_OF_EXEC) || (IS_TLS_IE(rtype))) { 12507c478bd9Sstevel@tonic-gate /* 1251d326b23bSrie * Set the DF_STATIC_TLS flag. 12527c478bd9Sstevel@tonic-gate */ 12537c478bd9Sstevel@tonic-gate ofl->ofl_dtflags |= DF_STATIC_TLS; 12547c478bd9Sstevel@tonic-gate 1255d326b23bSrie if (!local || ((flags & FLG_OF_EXEC) == 0)) { 12567c478bd9Sstevel@tonic-gate /* 1257d326b23bSrie * Assign a GOT entry for static TLS references. 12587c478bd9Sstevel@tonic-gate */ 1259d326b23bSrie if ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 1260d326b23bSrie GOT_REF_TLSIE, ofl, rsp)) == 0) { 12617c478bd9Sstevel@tonic-gate 1262d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, 1263d326b23bSrie gnp, GOT_REF_TLSIE, FLG_REL_STLS, 1264d326b23bSrie rtype, R_AMD64_TPOFF64, 0) == S_ERROR) 1265d326b23bSrie return (S_ERROR); 1266d326b23bSrie } 12677c478bd9Sstevel@tonic-gate 12687c478bd9Sstevel@tonic-gate /* 1269d326b23bSrie * IE access model. 12707c478bd9Sstevel@tonic-gate */ 12717c478bd9Sstevel@tonic-gate if (IS_TLS_IE(rtype)) 12725aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 12737c478bd9Sstevel@tonic-gate 12747c478bd9Sstevel@tonic-gate /* 1275d326b23bSrie * Fixups are required for other executable models. 12767c478bd9Sstevel@tonic-gate */ 12775aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 12787c478bd9Sstevel@tonic-gate rsp, ofl)); 12797c478bd9Sstevel@tonic-gate } 1280d326b23bSrie 12817c478bd9Sstevel@tonic-gate /* 1282d326b23bSrie * LE access model. 12837c478bd9Sstevel@tonic-gate */ 12847c478bd9Sstevel@tonic-gate if (IS_TLS_LE(rtype)) 12855aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 1286d326b23bSrie 12875aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 12885aefb655Srie rsp, ofl)); 12897c478bd9Sstevel@tonic-gate } 12907c478bd9Sstevel@tonic-gate 12917c478bd9Sstevel@tonic-gate /* 1292d326b23bSrie * Building a shared object. 1293d326b23bSrie * 1294d326b23bSrie * Assign a GOT entry for a dynamic TLS reference. 12957c478bd9Sstevel@tonic-gate */ 12965aefb655Srie if (IS_TLS_LD(rtype) && ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), 12977c478bd9Sstevel@tonic-gate GOT_REF_TLSLD, ofl, rsp)) == 0)) { 1298d326b23bSrie 1299d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSLD, 1300d326b23bSrie FLG_REL_MTLS, rtype, R_AMD64_DTPMOD64, 0) == S_ERROR) 13017c478bd9Sstevel@tonic-gate return (S_ERROR); 1302d326b23bSrie 13035aefb655Srie } else if (IS_TLS_GD(rtype) && 1304d326b23bSrie ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), GOT_REF_TLSGD, 1305d326b23bSrie ofl, rsp)) == 0)) { 1306d326b23bSrie 1307d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSGD, 1308d326b23bSrie FLG_REL_DTLS, rtype, R_AMD64_DTPMOD64, 1309d326b23bSrie R_AMD64_DTPOFF64) == S_ERROR) 13107c478bd9Sstevel@tonic-gate return (S_ERROR); 13117c478bd9Sstevel@tonic-gate } 13127c478bd9Sstevel@tonic-gate 13137c478bd9Sstevel@tonic-gate if (IS_TLS_LD(rtype)) 13145aefb655Srie return (ld_add_actrel(FLG_REL_MTLS, rsp, ofl)); 13157c478bd9Sstevel@tonic-gate 13165aefb655Srie return (ld_add_actrel(FLG_REL_DTLS, rsp, ofl)); 13177c478bd9Sstevel@tonic-gate } 13187c478bd9Sstevel@tonic-gate 13197c478bd9Sstevel@tonic-gate /* ARGSUSED3 */ 13207c478bd9Sstevel@tonic-gate Gotndx * 13215aefb655Srie ld_find_gotndx(List * lst, Gotref gref, Ofl_desc * ofl, Rel_desc * rdesc) 13227c478bd9Sstevel@tonic-gate { 13237c478bd9Sstevel@tonic-gate Listnode * lnp; 13247c478bd9Sstevel@tonic-gate Gotndx * gnp; 13257c478bd9Sstevel@tonic-gate 13267c478bd9Sstevel@tonic-gate assert(rdesc != 0); 13277c478bd9Sstevel@tonic-gate 13287c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSLD) && ofl->ofl_tlsldgotndx) 13297c478bd9Sstevel@tonic-gate return (ofl->ofl_tlsldgotndx); 13307c478bd9Sstevel@tonic-gate 13317c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(lst, lnp, gnp)) { 13327c478bd9Sstevel@tonic-gate if ((rdesc->rel_raddend == gnp->gn_addend) && 13337c478bd9Sstevel@tonic-gate (gnp->gn_gotref == gref)) { 13347c478bd9Sstevel@tonic-gate return (gnp); 13357c478bd9Sstevel@tonic-gate } 13367c478bd9Sstevel@tonic-gate } 13377c478bd9Sstevel@tonic-gate return ((Gotndx *)0); 13387c478bd9Sstevel@tonic-gate } 13397c478bd9Sstevel@tonic-gate 13407c478bd9Sstevel@tonic-gate Xword 13415aefb655Srie ld_calc_got_offset(Rel_desc * rdesc, Ofl_desc * ofl) 13427c478bd9Sstevel@tonic-gate { 13437c478bd9Sstevel@tonic-gate Os_desc *osp = ofl->ofl_osgot; 13447c478bd9Sstevel@tonic-gate Sym_desc *sdp = rdesc->rel_sym; 13457c478bd9Sstevel@tonic-gate Xword gotndx; 13467c478bd9Sstevel@tonic-gate Gotref gref; 13477c478bd9Sstevel@tonic-gate Gotndx *gnp; 13487c478bd9Sstevel@tonic-gate 13497c478bd9Sstevel@tonic-gate if (rdesc->rel_flags & FLG_REL_DTLS) 13507c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSGD; 13517c478bd9Sstevel@tonic-gate else if (rdesc->rel_flags & FLG_REL_MTLS) 13527c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSLD; 13537c478bd9Sstevel@tonic-gate else if (rdesc->rel_flags & FLG_REL_STLS) 13547c478bd9Sstevel@tonic-gate gref = GOT_REF_TLSIE; 13557c478bd9Sstevel@tonic-gate else 13567c478bd9Sstevel@tonic-gate gref = GOT_REF_GENERIC; 13577c478bd9Sstevel@tonic-gate 13585aefb655Srie gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, ofl, rdesc); 13597c478bd9Sstevel@tonic-gate assert(gnp); 13607c478bd9Sstevel@tonic-gate 13617c478bd9Sstevel@tonic-gate gotndx = (Xword)gnp->gn_gotndx; 13627c478bd9Sstevel@tonic-gate 13637c478bd9Sstevel@tonic-gate if ((rdesc->rel_flags & FLG_REL_DTLS) && 13647c478bd9Sstevel@tonic-gate (rdesc->rel_rtype == R_AMD64_DTPOFF64)) 13657c478bd9Sstevel@tonic-gate gotndx++; 13667c478bd9Sstevel@tonic-gate 13677c478bd9Sstevel@tonic-gate return ((Xword)(osp->os_shdr->sh_addr + (gotndx * M_GOT_ENTSIZE))); 13687c478bd9Sstevel@tonic-gate } 13697c478bd9Sstevel@tonic-gate 13707c478bd9Sstevel@tonic-gate 13717c478bd9Sstevel@tonic-gate /* ARGSUSED5 */ 13727c478bd9Sstevel@tonic-gate uintptr_t 1373d326b23bSrie ld_assign_got_ndx(List * lst, Gotndx * pgnp, Gotref gref, Ofl_desc * ofl, 13747c478bd9Sstevel@tonic-gate Rel_desc * rsp, Sym_desc * sdp) 13757c478bd9Sstevel@tonic-gate { 13767c478bd9Sstevel@tonic-gate Xword raddend; 13777c478bd9Sstevel@tonic-gate Gotndx *gnp, *_gnp; 13787c478bd9Sstevel@tonic-gate Listnode *lnp, *plnp; 13797c478bd9Sstevel@tonic-gate uint_t gotents; 13807c478bd9Sstevel@tonic-gate 13817c478bd9Sstevel@tonic-gate raddend = rsp->rel_raddend; 13827c478bd9Sstevel@tonic-gate if (pgnp && (pgnp->gn_addend == raddend) && 13837c478bd9Sstevel@tonic-gate (pgnp->gn_gotref == gref)) 13847c478bd9Sstevel@tonic-gate return (1); 13857c478bd9Sstevel@tonic-gate 13867c478bd9Sstevel@tonic-gate if ((gref == GOT_REF_TLSGD) || (gref == GOT_REF_TLSLD)) 13877c478bd9Sstevel@tonic-gate gotents = 2; 13887c478bd9Sstevel@tonic-gate else 13897c478bd9Sstevel@tonic-gate gotents = 1; 13907c478bd9Sstevel@tonic-gate 13917c478bd9Sstevel@tonic-gate plnp = 0; 13927c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(lst, lnp, _gnp)) { 13937c478bd9Sstevel@tonic-gate if (_gnp->gn_addend > raddend) 13947c478bd9Sstevel@tonic-gate break; 13957c478bd9Sstevel@tonic-gate plnp = lnp; 13967c478bd9Sstevel@tonic-gate } 13977c478bd9Sstevel@tonic-gate 13987c478bd9Sstevel@tonic-gate /* 13997c478bd9Sstevel@tonic-gate * Allocate a new entry. 14007c478bd9Sstevel@tonic-gate */ 14017c478bd9Sstevel@tonic-gate if ((gnp = libld_calloc(sizeof (Gotndx), 1)) == 0) 14027c478bd9Sstevel@tonic-gate return (S_ERROR); 14037c478bd9Sstevel@tonic-gate gnp->gn_addend = raddend; 14047c478bd9Sstevel@tonic-gate gnp->gn_gotndx = ofl->ofl_gotcnt; 14057c478bd9Sstevel@tonic-gate gnp->gn_gotref = gref; 14067c478bd9Sstevel@tonic-gate 14077c478bd9Sstevel@tonic-gate ofl->ofl_gotcnt += gotents; 14087c478bd9Sstevel@tonic-gate 14097c478bd9Sstevel@tonic-gate if (gref == GOT_REF_TLSLD) { 14107c478bd9Sstevel@tonic-gate ofl->ofl_tlsldgotndx = gnp; 14117c478bd9Sstevel@tonic-gate return (1); 14127c478bd9Sstevel@tonic-gate } 14137c478bd9Sstevel@tonic-gate 14147c478bd9Sstevel@tonic-gate if (plnp == 0) { 14157c478bd9Sstevel@tonic-gate /* 14167c478bd9Sstevel@tonic-gate * Insert at head of list 14177c478bd9Sstevel@tonic-gate */ 14187c478bd9Sstevel@tonic-gate if (list_prependc(lst, (void *)gnp) == 0) 14197c478bd9Sstevel@tonic-gate return (S_ERROR); 14207c478bd9Sstevel@tonic-gate } else if (_gnp->gn_addend > raddend) { 14217c478bd9Sstevel@tonic-gate /* 14227c478bd9Sstevel@tonic-gate * Insert in middle of lest 14237c478bd9Sstevel@tonic-gate */ 14247c478bd9Sstevel@tonic-gate if (list_insertc(lst, (void *)gnp, plnp) == 0) 14257c478bd9Sstevel@tonic-gate return (S_ERROR); 14267c478bd9Sstevel@tonic-gate } else { 14277c478bd9Sstevel@tonic-gate /* 14287c478bd9Sstevel@tonic-gate * Append to tail of list 14297c478bd9Sstevel@tonic-gate */ 14307c478bd9Sstevel@tonic-gate if (list_appendc(lst, (void *)gnp) == 0) 14317c478bd9Sstevel@tonic-gate return (S_ERROR); 14327c478bd9Sstevel@tonic-gate } 14337c478bd9Sstevel@tonic-gate return (1); 14347c478bd9Sstevel@tonic-gate } 14357c478bd9Sstevel@tonic-gate 14367c478bd9Sstevel@tonic-gate void 14375aefb655Srie ld_assign_plt_ndx(Sym_desc * sdp, Ofl_desc *ofl) 14387c478bd9Sstevel@tonic-gate { 14397c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTndx = 1 + ofl->ofl_pltcnt++; 14407c478bd9Sstevel@tonic-gate sdp->sd_aux->sa_PLTGOTndx = ofl->ofl_gotcnt++; 1441141040e8Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 14427c478bd9Sstevel@tonic-gate } 14437c478bd9Sstevel@tonic-gate 1444b3fbe5e6Sseizo static uchar_t plt0_template[M_PLT_ENTSIZE] = { 14457c478bd9Sstevel@tonic-gate /* 0x00 PUSHQ GOT+8(%rip) */ 0xff, 0x35, 0x00, 0x00, 0x00, 0x00, 14467c478bd9Sstevel@tonic-gate /* 0x06 JMP *GOT+16(%rip) */ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 14477c478bd9Sstevel@tonic-gate /* 0x0c NOP */ 0x90, 14487c478bd9Sstevel@tonic-gate /* 0x0d NOP */ 0x90, 14497c478bd9Sstevel@tonic-gate /* 0x0e NOP */ 0x90, 14507c478bd9Sstevel@tonic-gate /* 0x0f NOP */ 0x90 14517c478bd9Sstevel@tonic-gate }; 14527c478bd9Sstevel@tonic-gate 14537c478bd9Sstevel@tonic-gate /* 14547c478bd9Sstevel@tonic-gate * Initializes .got[0] with the _DYNAMIC symbol value. 14557c478bd9Sstevel@tonic-gate */ 14567c478bd9Sstevel@tonic-gate uintptr_t 1457d326b23bSrie ld_fillin_gotplt(Ofl_desc *ofl) 14587c478bd9Sstevel@tonic-gate { 14597c478bd9Sstevel@tonic-gate if (ofl->ofl_osgot) { 1460d326b23bSrie Sym_desc *sdp; 14617c478bd9Sstevel@tonic-gate 14625aefb655Srie if ((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_DYNAMIC_U), 14637c478bd9Sstevel@tonic-gate SYM_NOHASH, 0, ofl)) != NULL) { 1464d326b23bSrie uchar_t *genptr; 1465d326b23bSrie 1466d326b23bSrie genptr = ((uchar_t *)ofl->ofl_osgot->os_outdata->d_buf + 14677c478bd9Sstevel@tonic-gate (M_GOT_XDYNAMIC * M_GOT_ENTSIZE)); 14687c478bd9Sstevel@tonic-gate /* LINTED */ 14697c478bd9Sstevel@tonic-gate *(Xword *)genptr = sdp->sd_sym->st_value; 14707c478bd9Sstevel@tonic-gate } 14717c478bd9Sstevel@tonic-gate } 14727c478bd9Sstevel@tonic-gate 14737c478bd9Sstevel@tonic-gate /* 14747c478bd9Sstevel@tonic-gate * Fill in the reserved slot in the procedure linkage table the first 14757c478bd9Sstevel@tonic-gate * entry is: 14767c478bd9Sstevel@tonic-gate * 0x00 PUSHQ GOT+8(%rip) # GOT[1] 14777c478bd9Sstevel@tonic-gate * 0x06 JMP *GOT+16(%rip) # GOT[2] 14787c478bd9Sstevel@tonic-gate * 0x0c NOP 14797c478bd9Sstevel@tonic-gate * 0x0d NOP 14807c478bd9Sstevel@tonic-gate * 0x0e NOP 14817c478bd9Sstevel@tonic-gate * 0x0f NOP 14827c478bd9Sstevel@tonic-gate */ 1483*f3324781Sab if ((ofl->ofl_flags & FLG_OF_DYNAMIC) && ofl->ofl_osplt) { 1484d326b23bSrie uchar_t *pltent; 1485d326b23bSrie Xword val1; 1486*f3324781Sab int bswap; 14877c478bd9Sstevel@tonic-gate 1488b3fbe5e6Sseizo pltent = (uchar_t *)ofl->ofl_osplt->os_outdata->d_buf; 14897c478bd9Sstevel@tonic-gate bcopy(plt0_template, pltent, sizeof (plt0_template)); 14907c478bd9Sstevel@tonic-gate 1491*f3324781Sab /* 1492*f3324781Sab * If '-z noreloc' is specified - skip the do_reloc_ld 1493*f3324781Sab * stage. 1494*f3324781Sab */ 1495*f3324781Sab if (!OFL_DO_RELOC(ofl)) 1496*f3324781Sab return (1); 1497*f3324781Sab 1498*f3324781Sab /* 1499*f3324781Sab * If the running linker has a different byte order than 1500*f3324781Sab * the target host, tell do_reloc_ld() to swap bytes. 1501*f3324781Sab * 1502*f3324781Sab * We know the GOT is PROGBITS --- we don't have 1503*f3324781Sab * to check. 1504*f3324781Sab */ 1505*f3324781Sab bswap = (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) != 0; 1506*f3324781Sab 15077c478bd9Sstevel@tonic-gate /* 15087c478bd9Sstevel@tonic-gate * filin: 15097c478bd9Sstevel@tonic-gate * PUSHQ GOT + 8(%rip) 15107c478bd9Sstevel@tonic-gate * 15117c478bd9Sstevel@tonic-gate * Note: 0x06 below represents the offset to the 15127c478bd9Sstevel@tonic-gate * next instruction - which is what %rip will 15137c478bd9Sstevel@tonic-gate * be pointing at. 15147c478bd9Sstevel@tonic-gate */ 15157c478bd9Sstevel@tonic-gate val1 = (ofl->ofl_osgot->os_shdr->sh_addr) + 1516de777a60Sab (M_GOT_XLINKMAP * M_GOT_ENTSIZE) - 1517de777a60Sab ofl->ofl_osplt->os_shdr->sh_addr - 0x06; 15187c478bd9Sstevel@tonic-gate 1519*f3324781Sab if (do_reloc_ld(R_AMD64_GOTPCREL, &pltent[0x02], 1520*f3324781Sab &val1, MSG_ORIG(MSG_SYM_PLTENT), 1521*f3324781Sab MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, ofl->ofl_lml) == 0) { 1522*f3324781Sab eprintf(ofl->ofl_lml, ERR_FATAL, 1523*f3324781Sab MSG_INTL(MSG_PLT_PLT0FAIL)); 1524*f3324781Sab return (S_ERROR); 15257c478bd9Sstevel@tonic-gate } 15267c478bd9Sstevel@tonic-gate 15277c478bd9Sstevel@tonic-gate /* 15287c478bd9Sstevel@tonic-gate * filin: 15297c478bd9Sstevel@tonic-gate * JMP *GOT+16(%rip) 15307c478bd9Sstevel@tonic-gate */ 15317c478bd9Sstevel@tonic-gate val1 = (ofl->ofl_osgot->os_shdr->sh_addr) + 1532de777a60Sab (M_GOT_XRTLD * M_GOT_ENTSIZE) - 1533de777a60Sab ofl->ofl_osplt->os_shdr->sh_addr - 0x0c; 1534*f3324781Sab 1535*f3324781Sab if (do_reloc_ld(R_AMD64_GOTPCREL, &pltent[0x08], 1536*f3324781Sab &val1, MSG_ORIG(MSG_SYM_PLTENT), 1537*f3324781Sab MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, ofl->ofl_lml) == 0) { 1538*f3324781Sab eprintf(ofl->ofl_lml, ERR_FATAL, 1539*f3324781Sab MSG_INTL(MSG_PLT_PLT0FAIL)); 1540*f3324781Sab return (S_ERROR); 15417c478bd9Sstevel@tonic-gate } 15427c478bd9Sstevel@tonic-gate } 1543*f3324781Sab 15447c478bd9Sstevel@tonic-gate return (1); 15457c478bd9Sstevel@tonic-gate } 1546