15aefb655Srie /* 25aefb655Srie * CDDL HEADER START 35aefb655Srie * 45aefb655Srie * 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. 75aefb655Srie * 85aefb655Srie * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 95aefb655Srie * or http://www.opensolaris.org/os/licensing. 105aefb655Srie * See the License for the specific language governing permissions 115aefb655Srie * and limitations under the License. 125aefb655Srie * 135aefb655Srie * When distributing Covered Code, include this CDDL HEADER in each 145aefb655Srie * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 155aefb655Srie * If applicable, add the following below this CDDL HEADER, with the 165aefb655Srie * fields enclosed by brackets "[]" replaced with your own identifying 175aefb655Srie * information: Portions Copyright [yyyy] [name of copyright owner] 185aefb655Srie * 195aefb655Srie * CDDL HEADER END 205aefb655Srie */ 215aefb655Srie 225aefb655Srie /* 23bf994817SAli Bahrami * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. 245aefb655Srie */ 255aefb655Srie 26ba2be530Sab196087 /* Get the x86 version of the relocation engine */ 27ba2be530Sab196087 #define DO_RELOC_LIBLD_X86 28ba2be530Sab196087 295aefb655Srie #include <string.h> 305aefb655Srie #include <stdio.h> 315aefb655Srie #include <strings.h> 325aefb655Srie #include <sys/elf_amd64.h> 335aefb655Srie #include <debug.h> 345aefb655Srie #include <reloc.h> 35ba2be530Sab196087 #include <i386/machdep_x86.h> 365aefb655Srie #include "msg.h" 375aefb655Srie #include "_libld.h" 385aefb655Srie 3957ef7aa9SRod Evans /* 40bf994817SAli Bahrami * This module uses do_reloc_ld() to execute several synthesized relocations. 41bf994817SAli Bahrami * That function expects to be passed two things that we need to construct 42bf994817SAli Bahrami * here: 43bf994817SAli Bahrami * 44bf994817SAli Bahrami * 1) A Rel_desc descriptor for each relocation type, from which the 45bf994817SAli Bahrami * rel_rtype field, and nothing else, is obtained. This is easily 46bf994817SAli Bahrami * handled by constructing the necessary descriptors. 47bf994817SAli Bahrami * 48bf994817SAli Bahrami * 2) A function, which called with the Rel_desc descriptor, returns 49bf994817SAli Bahrami * a string representing the name of the symbol associated with 50bf994817SAli Bahrami * the descriptor. The usual function for this is ld_reloc_sym_name(). 51bf994817SAli Bahrami * However, that function will not work in this case, as these synthetic 52bf994817SAli Bahrami * relocations do not have an associated symbol. We supply the 53bf994817SAli Bahrami * syn_rdesc_sym_name() function to simply return the fixed name. 54bf994817SAli Bahrami */ 55bf994817SAli Bahrami static Rel_desc rdesc_r_amd64_gotpcrel = { 56bf994817SAli Bahrami NULL, NULL, NULL, 0, 0, 0, R_AMD64_GOTPCREL }; 57bf994817SAli Bahrami static Rel_desc rdesc_r_amd64_32 = { 58bf994817SAli Bahrami NULL, NULL, NULL, 0, 0, 0, R_AMD64_32 }; 59bf994817SAli Bahrami static Rel_desc rdesc_r_amd64_pc32 = { 60bf994817SAli Bahrami NULL, NULL, NULL, 0, 0, 0, R_AMD64_PC32 }; 61bf994817SAli Bahrami 62bf994817SAli Bahrami /*ARGSUSED*/ 63bf994817SAli Bahrami static const char * 64bf994817SAli Bahrami syn_rdesc_sym_name(Rel_desc *rdesc) 65bf994817SAli Bahrami { 66bf994817SAli Bahrami return (MSG_ORIG(MSG_SYM_PLTENT)); 67bf994817SAli Bahrami } 68bf994817SAli Bahrami 69bf994817SAli Bahrami /* 7057ef7aa9SRod Evans * Search the GOT index list for a GOT entry with a matching reference and the 7157ef7aa9SRod Evans * proper addend. 7257ef7aa9SRod Evans */ 7357ef7aa9SRod Evans static Gotndx * 7457ef7aa9SRod Evans ld_find_got_ndx(Alist *alp, Gotref gref, Ofl_desc *ofl, Rel_desc *rdesc) 7557ef7aa9SRod Evans { 7657ef7aa9SRod Evans Aliste idx; 7757ef7aa9SRod Evans Gotndx *gnp; 78ba2be530Sab196087 7957ef7aa9SRod Evans assert(rdesc != 0); 80ba2be530Sab196087 8157ef7aa9SRod Evans if ((gref == GOT_REF_TLSLD) && ofl->ofl_tlsldgotndx) 8257ef7aa9SRod Evans return (ofl->ofl_tlsldgotndx); 8357ef7aa9SRod Evans 8457ef7aa9SRod Evans for (ALIST_TRAVERSE(alp, idx, gnp)) { 8557ef7aa9SRod Evans if ((rdesc->rel_raddend == gnp->gn_addend) && 8657ef7aa9SRod Evans (gnp->gn_gotref == gref)) { 8757ef7aa9SRod Evans return (gnp); 8857ef7aa9SRod Evans } 8957ef7aa9SRod Evans } 9057ef7aa9SRod Evans return (NULL); 9157ef7aa9SRod Evans } 9257ef7aa9SRod Evans 9357ef7aa9SRod Evans static Xword 9457ef7aa9SRod Evans ld_calc_got_offset(Rel_desc *rdesc, Ofl_desc *ofl) 9557ef7aa9SRod Evans { 9657ef7aa9SRod Evans Os_desc *osp = ofl->ofl_osgot; 9757ef7aa9SRod Evans Sym_desc *sdp = rdesc->rel_sym; 9857ef7aa9SRod Evans Xword gotndx; 9957ef7aa9SRod Evans Gotref gref; 10057ef7aa9SRod Evans Gotndx *gnp; 10157ef7aa9SRod Evans 10257ef7aa9SRod Evans if (rdesc->rel_flags & FLG_REL_DTLS) 10357ef7aa9SRod Evans gref = GOT_REF_TLSGD; 10457ef7aa9SRod Evans else if (rdesc->rel_flags & FLG_REL_MTLS) 10557ef7aa9SRod Evans gref = GOT_REF_TLSLD; 10657ef7aa9SRod Evans else if (rdesc->rel_flags & FLG_REL_STLS) 10757ef7aa9SRod Evans gref = GOT_REF_TLSIE; 10857ef7aa9SRod Evans else 10957ef7aa9SRod Evans gref = GOT_REF_GENERIC; 11057ef7aa9SRod Evans 11157ef7aa9SRod Evans gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, ofl, rdesc); 11257ef7aa9SRod Evans assert(gnp); 11357ef7aa9SRod Evans 11457ef7aa9SRod Evans gotndx = (Xword)gnp->gn_gotndx; 11557ef7aa9SRod Evans 11657ef7aa9SRod Evans if ((rdesc->rel_flags & FLG_REL_DTLS) && 11757ef7aa9SRod Evans (rdesc->rel_rtype == R_AMD64_DTPOFF64)) 11857ef7aa9SRod Evans gotndx++; 11957ef7aa9SRod Evans 12057ef7aa9SRod Evans return ((Xword)(osp->os_shdr->sh_addr + (gotndx * M_GOT_ENTSIZE))); 12157ef7aa9SRod Evans } 122ba2be530Sab196087 123ba2be530Sab196087 static Word 124bf994817SAli Bahrami ld_init_rel(Rel_desc *reld, Word *typedata, void *reloc) 1255aefb655Srie { 1265aefb655Srie Rela *rel = (Rela *)reloc; 1275aefb655Srie 1285aefb655Srie /* LINTED */ 129ba2be530Sab196087 reld->rel_rtype = (Word)ELF_R_TYPE(rel->r_info, M_MACH); 1305aefb655Srie reld->rel_roffset = rel->r_offset; 1315aefb655Srie reld->rel_raddend = rel->r_addend; 132bf994817SAli Bahrami *typedata = 0; 1335aefb655Srie 1345aefb655Srie reld->rel_flags |= FLG_REL_RELA; 1355aefb655Srie 1365aefb655Srie return ((Word)ELF_R_SYM(rel->r_info)); 1375aefb655Srie } 1385aefb655Srie 139ba2be530Sab196087 static void 1405aefb655Srie ld_mach_eflags(Ehdr *ehdr, Ofl_desc *ofl) 1415aefb655Srie { 1425aefb655Srie ofl->ofl_dehdr->e_flags |= ehdr->e_flags; 1435aefb655Srie } 1445aefb655Srie 145ba2be530Sab196087 static void 1465aefb655Srie ld_mach_make_dynamic(Ofl_desc *ofl, size_t *cnt) 1475aefb655Srie { 1485aefb655Srie if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) { 1495aefb655Srie /* 1505aefb655Srie * Create this entry if we are going to create a PLT table. 1515aefb655Srie */ 1525aefb655Srie if (ofl->ofl_pltcnt) 1535aefb655Srie (*cnt)++; /* DT_PLTGOT */ 1545aefb655Srie } 1555aefb655Srie } 1565aefb655Srie 157ba2be530Sab196087 static void 1585aefb655Srie ld_mach_update_odynamic(Ofl_desc *ofl, Dyn **dyn) 1595aefb655Srie { 1605aefb655Srie if (((ofl->ofl_flags & FLG_OF_RELOBJ) == 0) && ofl->ofl_pltcnt) { 1615aefb655Srie (*dyn)->d_tag = DT_PLTGOT; 1625aefb655Srie if (ofl->ofl_osgot) 1635aefb655Srie (*dyn)->d_un.d_ptr = ofl->ofl_osgot->os_shdr->sh_addr; 1645aefb655Srie else 1655aefb655Srie (*dyn)->d_un.d_ptr = 0; 1665aefb655Srie (*dyn)++; 1675aefb655Srie } 1685aefb655Srie } 1695aefb655Srie 170ba2be530Sab196087 static Xword 1715aefb655Srie ld_calc_plt_addr(Sym_desc *sdp, Ofl_desc *ofl) 1725aefb655Srie { 1735aefb655Srie Xword value; 1745aefb655Srie 1755aefb655Srie value = (Xword)(ofl->ofl_osplt->os_shdr->sh_addr) + 1765aefb655Srie M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * M_PLT_ENTSIZE); 1775aefb655Srie return (value); 1785aefb655Srie } 1795aefb655Srie 1805aefb655Srie /* 1815aefb655Srie * Build a single plt entry - code is: 1825aefb655Srie * JMP *name1@GOTPCREL(%rip) 1835aefb655Srie * PUSHL $index 1845aefb655Srie * JMP .PLT0 1855aefb655Srie */ 1865aefb655Srie static uchar_t pltn_entry[M_PLT_ENTSIZE] = { 1875aefb655Srie /* 0x00 jmpq *name1@GOTPCREL(%rip) */ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 1885aefb655Srie /* 0x06 pushq $index */ 0x68, 0x00, 0x00, 0x00, 0x00, 1895aefb655Srie /* 0x0b jmpq .plt0(%rip) */ 0xe9, 0x00, 0x00, 0x00, 0x00 1905aefb655Srie /* 0x10 */ 1915aefb655Srie }; 1925aefb655Srie 1935aefb655Srie static uintptr_t 1945aefb655Srie plt_entry(Ofl_desc * ofl, Sym_desc * sdp) 1955aefb655Srie { 1965aefb655Srie uchar_t *plt0, *pltent, *gotent; 1975aefb655Srie Sword plt_off; 1985aefb655Srie Word got_off; 1995aefb655Srie Xword val1; 200ba2be530Sab196087 int bswap = (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) != 0; 2015aefb655Srie 2025aefb655Srie got_off = sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 2035aefb655Srie plt_off = M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * 2045aefb655Srie M_PLT_ENTSIZE); 2055aefb655Srie plt0 = (uchar_t *)(ofl->ofl_osplt->os_outdata->d_buf); 2065aefb655Srie pltent = plt0 + plt_off; 2075aefb655Srie gotent = (uchar_t *)(ofl->ofl_osgot->os_outdata->d_buf) + got_off; 2085aefb655Srie 2095aefb655Srie bcopy(pltn_entry, pltent, sizeof (pltn_entry)); 2105aefb655Srie /* 2115aefb655Srie * Fill in the got entry with the address of the next instruction. 2125aefb655Srie */ 2135aefb655Srie /* LINTED */ 2145aefb655Srie *(Word *)gotent = ofl->ofl_osplt->os_shdr->sh_addr + plt_off + 2155aefb655Srie M_PLT_INSSIZE; 216ba2be530Sab196087 if (bswap) 217ba2be530Sab196087 /* LINTED */ 218ba2be530Sab196087 *(Word *)gotent = ld_bswap_Word(*(Word *)gotent); 2195aefb655Srie 2205aefb655Srie /* 221f3324781Sab196087 * If '-z noreloc' is specified - skip the do_reloc_ld 222f3324781Sab196087 * stage. 223f3324781Sab196087 */ 224f3324781Sab196087 if (!OFL_DO_RELOC(ofl)) 225f3324781Sab196087 return (1); 226f3324781Sab196087 227f3324781Sab196087 /* 2285aefb655Srie * patchup: 2295aefb655Srie * jmpq *name1@gotpcrel(%rip) 2305aefb655Srie * 2315aefb655Srie * NOTE: 0x06 represents next instruction. 2325aefb655Srie */ 2335aefb655Srie val1 = (ofl->ofl_osgot->os_shdr->sh_addr + got_off) - 2345aefb655Srie (ofl->ofl_osplt->os_shdr->sh_addr + plt_off) - 0x06; 2355aefb655Srie 236bf994817SAli Bahrami if (do_reloc_ld(&rdesc_r_amd64_gotpcrel, &pltent[0x02], &val1, 237bf994817SAli Bahrami syn_rdesc_sym_name, MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, 238bf994817SAli Bahrami ofl->ofl_lml) == 0) { 2391007fd6fSAli Bahrami ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_PLT_PLTNFAIL), 240f3324781Sab196087 sdp->sd_aux->sa_PLTndx, demangle(sdp->sd_name)); 2415aefb655Srie return (S_ERROR); 2425aefb655Srie } 2435aefb655Srie 2445aefb655Srie /* 2455aefb655Srie * patchup: 2465aefb655Srie * pushq $pltndx 2475aefb655Srie */ 2485aefb655Srie val1 = (Xword)(sdp->sd_aux->sa_PLTndx - 1); 249f3324781Sab196087 250bf994817SAli Bahrami if (do_reloc_ld(&rdesc_r_amd64_32, &pltent[0x07], &val1, 251bf994817SAli Bahrami syn_rdesc_sym_name, MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, 252bf994817SAli Bahrami ofl->ofl_lml) == 0) { 2531007fd6fSAli Bahrami ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_PLT_PLTNFAIL), 254f3324781Sab196087 sdp->sd_aux->sa_PLTndx, demangle(sdp->sd_name)); 2555aefb655Srie return (S_ERROR); 2565aefb655Srie } 2575aefb655Srie 2585aefb655Srie /* 2595aefb655Srie * patchup: 2605aefb655Srie * jmpq .plt0(%rip) 261f3324781Sab196087 * NOTE: 0x10 represents next instruction. The rather complex 262f3324781Sab196087 * series of casts is necessary to sign extend an offset into 263f3324781Sab196087 * a 64-bit value while satisfying various compiler error 264f3324781Sab196087 * checks. Handle with care. 2655aefb655Srie */ 2665aefb655Srie val1 = (Xword)((intptr_t)((uintptr_t)plt0 - 2675aefb655Srie (uintptr_t)(&pltent[0x10]))); 2685aefb655Srie 269bf994817SAli Bahrami if (do_reloc_ld(&rdesc_r_amd64_pc32, &pltent[0x0c], &val1, 270bf994817SAli Bahrami syn_rdesc_sym_name, MSG_ORIG(MSG_SPECFIL_PLTENT), bswap, 271bf994817SAli Bahrami ofl->ofl_lml) == 0) { 2721007fd6fSAli Bahrami ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_PLT_PLTNFAIL), 273f3324781Sab196087 sdp->sd_aux->sa_PLTndx, demangle(sdp->sd_name)); 2745aefb655Srie return (S_ERROR); 2755aefb655Srie } 276f3324781Sab196087 2775aefb655Srie return (1); 2785aefb655Srie } 2795aefb655Srie 280ba2be530Sab196087 static uintptr_t 2811007fd6fSAli Bahrami ld_perform_outreloc(Rel_desc * orsp, Ofl_desc * ofl, Boolean *remain_seen) 2825aefb655Srie { 2835aefb655Srie Os_desc * relosp, * osp = 0; 2845aefb655Srie Word ndx; 2855aefb655Srie Xword roffset, value; 2865aefb655Srie Sxword raddend; 2875aefb655Srie Rela rea; 2885aefb655Srie char *relbits; 2895aefb655Srie Sym_desc * sdp, * psym = (Sym_desc *)0; 2905aefb655Srie int sectmoved = 0; 2915aefb655Srie 2925aefb655Srie raddend = orsp->rel_raddend; 2935aefb655Srie sdp = orsp->rel_sym; 2945aefb655Srie 2955aefb655Srie /* 2965aefb655Srie * If the section this relocation is against has been discarded 2975aefb655Srie * (-zignore), then also discard (skip) the relocation itself. 2985aefb655Srie */ 2995aefb655Srie if (orsp->rel_isdesc && ((orsp->rel_flags & 3005aefb655Srie (FLG_REL_GOT | FLG_REL_BSS | FLG_REL_PLT | FLG_REL_NOINFO)) == 0) && 3015aefb655Srie (orsp->rel_isdesc->is_flags & FLG_IS_DISCARD)) { 3025aefb655Srie DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, orsp)); 3035aefb655Srie return (1); 3045aefb655Srie } 3055aefb655Srie 3065aefb655Srie /* 3075aefb655Srie * If this is a relocation against a move table, or expanded move 3085aefb655Srie * table, adjust the relocation entries. 3095aefb655Srie */ 310bf994817SAli Bahrami if (RELAUX_GET_MOVE(orsp)) 3115aefb655Srie ld_adj_movereloc(ofl, orsp); 3125aefb655Srie 3135aefb655Srie /* 3145aefb655Srie * If this is a relocation against a section then we need to adjust the 3155aefb655Srie * raddend field to compensate for the new position of the input section 3165aefb655Srie * within the new output section. 3175aefb655Srie */ 3185aefb655Srie if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) { 31957ef7aa9SRod Evans if (ofl->ofl_parsyms && 3205aefb655Srie (sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 3215aefb655Srie /* LINTED */ 3225aefb655Srie (psym = ld_am_I_partial(orsp, orsp->rel_raddend))) { 3235aefb655Srie DBG_CALL(Dbg_move_outsctadj(ofl->ofl_lml, psym)); 3245aefb655Srie sectmoved = 1; 3255aefb655Srie if (ofl->ofl_flags & FLG_OF_RELOBJ) 3265aefb655Srie raddend = psym->sd_sym->st_value; 3275aefb655Srie else 3285aefb655Srie raddend = psym->sd_sym->st_value - 3295aefb655Srie psym->sd_isc->is_osdesc->os_shdr->sh_addr; 3305aefb655Srie /* LINTED */ 3315aefb655Srie raddend += (Off)_elf_getxoff(psym->sd_isc->is_indata); 3325aefb655Srie if (psym->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 3335aefb655Srie raddend += 3345aefb655Srie psym->sd_isc->is_osdesc->os_shdr->sh_addr; 3355aefb655Srie } else { 3365aefb655Srie /* LINTED */ 3375aefb655Srie raddend += (Off)_elf_getxoff(sdp->sd_isc->is_indata); 3385aefb655Srie if (sdp->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 3395aefb655Srie raddend += 3405aefb655Srie sdp->sd_isc->is_osdesc->os_shdr->sh_addr; 3415aefb655Srie } 3425aefb655Srie } 3435aefb655Srie 3445aefb655Srie value = sdp->sd_sym->st_value; 3455aefb655Srie 3465aefb655Srie if (orsp->rel_flags & FLG_REL_GOT) { 3475aefb655Srie /* 3485aefb655Srie * Note: for GOT relative relocations on amd64 3495aefb655Srie * we discard the addend. It was relevant 3505aefb655Srie * to the reference - not to the data item 3515aefb655Srie * being referenced (ie: that -4 thing). 3525aefb655Srie */ 3535aefb655Srie raddend = 0; 3545aefb655Srie osp = ofl->ofl_osgot; 3555aefb655Srie roffset = ld_calc_got_offset(orsp, ofl); 3565aefb655Srie 3575aefb655Srie } else if (orsp->rel_flags & FLG_REL_PLT) { 3585aefb655Srie /* 3595aefb655Srie * Note that relocations for PLT's actually 3605aefb655Srie * cause a relocation againt the GOT. 3615aefb655Srie */ 3625aefb655Srie osp = ofl->ofl_osplt; 3635aefb655Srie roffset = (ofl->ofl_osgot->os_shdr->sh_addr) + 3645aefb655Srie sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE; 3655aefb655Srie raddend = 0; 3665aefb655Srie if (plt_entry(ofl, sdp) == S_ERROR) 3675aefb655Srie return (S_ERROR); 3685aefb655Srie 3695aefb655Srie } else if (orsp->rel_flags & FLG_REL_BSS) { 3705aefb655Srie /* 3715aefb655Srie * This must be a R_AMD64_COPY. For these set the roffset to 3725aefb655Srie * point to the new symbols location. 3735aefb655Srie */ 3745aefb655Srie osp = ofl->ofl_isbss->is_osdesc; 3755aefb655Srie roffset = value; 3765aefb655Srie 3775aefb655Srie /* 3785aefb655Srie * The raddend doesn't mean anything in a R_SPARC_COPY 3795aefb655Srie * relocation. Null it out because it can confuse people. 3805aefb655Srie */ 3815aefb655Srie raddend = 0; 3825aefb655Srie } else { 383bf994817SAli Bahrami osp = RELAUX_GET_OSDESC(orsp); 3845aefb655Srie 3855aefb655Srie /* 3865aefb655Srie * Calculate virtual offset of reference point; equals offset 3875aefb655Srie * into section + vaddr of section for loadable sections, or 3885aefb655Srie * offset plus section displacement for nonloadable sections. 3895aefb655Srie */ 3905aefb655Srie roffset = orsp->rel_roffset + 3915aefb655Srie (Off)_elf_getxoff(orsp->rel_isdesc->is_indata); 3925aefb655Srie if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) 3935aefb655Srie roffset += orsp->rel_isdesc->is_osdesc-> 3945aefb655Srie os_shdr->sh_addr; 3955aefb655Srie } 3965aefb655Srie 3975aefb655Srie if ((osp == 0) || ((relosp = osp->os_relosdesc) == 0)) 3985aefb655Srie relosp = ofl->ofl_osrel; 3995aefb655Srie 4005aefb655Srie /* 4015aefb655Srie * Assign the symbols index for the output relocation. If the 4025aefb655Srie * relocation refers to a SECTION symbol then it's index is based upon 4035aefb655Srie * the output sections symbols index. Otherwise the index can be 4045aefb655Srie * derived from the symbols index itself. 4055aefb655Srie */ 4065aefb655Srie if (orsp->rel_rtype == R_AMD64_RELATIVE) 4075aefb655Srie ndx = STN_UNDEF; 4085aefb655Srie else if ((orsp->rel_flags & FLG_REL_SCNNDX) || 4095aefb655Srie (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION)) { 4105aefb655Srie if (sectmoved == 0) { 4115aefb655Srie /* 4125aefb655Srie * Check for a null input section. This can 4135aefb655Srie * occur if this relocation references a symbol 4145aefb655Srie * generated by sym_add_sym(). 4155aefb655Srie */ 41657ef7aa9SRod Evans if (sdp->sd_isc && sdp->sd_isc->is_osdesc) 41757ef7aa9SRod Evans ndx = sdp->sd_isc->is_osdesc->os_identndx; 4185aefb655Srie else 4195aefb655Srie ndx = sdp->sd_shndx; 4205aefb655Srie } else 42135450702SAli Bahrami ndx = ofl->ofl_parexpnndx; 4225aefb655Srie } else 4235aefb655Srie ndx = sdp->sd_symndx; 4245aefb655Srie 4255aefb655Srie /* 4265aefb655Srie * Add the symbols 'value' to the addend field. 4275aefb655Srie */ 4285aefb655Srie if (orsp->rel_flags & FLG_REL_ADVAL) 4295aefb655Srie raddend += value; 4305aefb655Srie 4315aefb655Srie /* 4327010c12aSrie * The addend field for R_AMD64_DTPMOD64 means nothing. The addend 4337010c12aSrie * is propagated in the corresponding R_AMD64_DTPOFF64 relocation. 4345aefb655Srie */ 4355aefb655Srie if (orsp->rel_rtype == R_AMD64_DTPMOD64) 4365aefb655Srie raddend = 0; 4375aefb655Srie 438*0bc0887eSRichard Lowe if ((orsp->rel_rtype != M_R_NONE) && 439*0bc0887eSRichard Lowe (orsp->rel_rtype != M_R_RELATIVE)) { 440*0bc0887eSRichard Lowe if (ndx == 0) { 441*0bc0887eSRichard Lowe Conv_inv_buf_t inv_buf; 442*0bc0887eSRichard Lowe Is_desc *isp = orsp->rel_isdesc; 443*0bc0887eSRichard Lowe 444*0bc0887eSRichard Lowe ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_REL_NOSYMBOL), 445*0bc0887eSRichard Lowe conv_reloc_type(ofl->ofl_nehdr->e_machine, 446*0bc0887eSRichard Lowe orsp->rel_rtype, 0, &inv_buf), 447*0bc0887eSRichard Lowe isp->is_file->ifl_name, EC_WORD(isp->is_scnndx), 448*0bc0887eSRichard Lowe isp->is_name, EC_XWORD(roffset)); 449*0bc0887eSRichard Lowe return (S_ERROR); 450*0bc0887eSRichard Lowe } 451*0bc0887eSRichard Lowe } 4525aefb655Srie 4535aefb655Srie rea.r_info = ELF_R_INFO(ndx, orsp->rel_rtype); 4545aefb655Srie rea.r_offset = roffset; 4555aefb655Srie rea.r_addend = raddend; 4565aefb655Srie DBG_CALL(Dbg_reloc_out(ofl, ELF_DBG_LD, SHT_RELA, &rea, relosp->os_name, 457bf994817SAli Bahrami ld_reloc_sym_name(orsp))); 4585aefb655Srie 4595aefb655Srie /* 4605aefb655Srie * Assert we haven't walked off the end of our relocation table. 4615aefb655Srie */ 4625aefb655Srie assert(relosp->os_szoutrels <= relosp->os_shdr->sh_size); 4635aefb655Srie 464*0bc0887eSRichard Lowe relbits = (char *)relosp->os_outdata->d_buf; 465*0bc0887eSRichard Lowe 4665aefb655Srie (void) memcpy((relbits + relosp->os_szoutrels), 4675aefb655Srie (char *)&rea, sizeof (Rela)); 4685aefb655Srie relosp->os_szoutrels += (Xword)sizeof (Rela); 4695aefb655Srie 4705aefb655Srie /* 4715aefb655Srie * Determine if this relocation is against a non-writable, allocatable 4725aefb655Srie * section. If so we may need to provide a text relocation diagnostic. 4735aefb655Srie * Note that relocations against the .plt (R_AMD64_JUMP_SLOT) actually 4745aefb655Srie * result in modifications to the .got. 4755aefb655Srie */ 4765aefb655Srie if (orsp->rel_rtype == R_AMD64_JUMP_SLOT) 4775aefb655Srie osp = ofl->ofl_osgot; 4785aefb655Srie 4791007fd6fSAli Bahrami ld_reloc_remain_entry(orsp, osp, ofl, remain_seen); 4805aefb655Srie return (1); 4815aefb655Srie } 4825aefb655Srie 4835aefb655Srie /* 4845aefb655Srie * amd64 Instructions for TLS processing 4855aefb655Srie */ 4865aefb655Srie static uchar_t tlsinstr_gd_ie[] = { 4875aefb655Srie /* 4885aefb655Srie * 0x00 movq %fs:0, %rax 4895aefb655Srie */ 4905aefb655Srie 0x64, 0x48, 0x8b, 0x04, 0x25, 4915aefb655Srie 0x00, 0x00, 0x00, 0x00, 4925aefb655Srie /* 4935aefb655Srie * 0x09 addq x@gottpoff(%rip), %rax 4945aefb655Srie */ 4955aefb655Srie 0x48, 0x03, 0x05, 0x00, 0x00, 4965aefb655Srie 0x00, 0x00 4975aefb655Srie }; 4985aefb655Srie 4995aefb655Srie static uchar_t tlsinstr_gd_le[] = { 5005aefb655Srie /* 5015aefb655Srie * 0x00 movq %fs:0, %rax 5025aefb655Srie */ 5035aefb655Srie 0x64, 0x48, 0x8b, 0x04, 0x25, 5045aefb655Srie 0x00, 0x00, 0x00, 0x00, 5055aefb655Srie /* 5065aefb655Srie * 0x09 leaq x@gottpoff(%rip), %rax 5075aefb655Srie */ 5085aefb655Srie 0x48, 0x8d, 0x80, 0x00, 0x00, 5095aefb655Srie 0x00, 0x00 5105aefb655Srie }; 5115aefb655Srie 5125aefb655Srie static uchar_t tlsinstr_ld_le[] = { 5135aefb655Srie /* 5145aefb655Srie * .byte 0x66 5155aefb655Srie */ 5165aefb655Srie 0x66, 5175aefb655Srie /* 5185aefb655Srie * .byte 0x66 5195aefb655Srie */ 5205aefb655Srie 0x66, 5215aefb655Srie /* 5225aefb655Srie * .byte 0x66 5235aefb655Srie */ 5245aefb655Srie 0x66, 5255aefb655Srie /* 5265aefb655Srie * movq %fs:0, %rax 5275aefb655Srie */ 5285aefb655Srie 0x64, 0x48, 0x8b, 0x04, 0x25, 5295aefb655Srie 0x00, 0x00, 0x00, 0x00 5305aefb655Srie }; 5315aefb655Srie 53249f9b365SRichard Lowe #define REX_B 0x1 53349f9b365SRichard Lowe #define REX_X 0x2 53449f9b365SRichard Lowe #define REX_R 0x4 53549f9b365SRichard Lowe #define REX_W 0x8 53649f9b365SRichard Lowe #define REX_PREFIX 0x40 53749f9b365SRichard Lowe 53849f9b365SRichard Lowe #define REX_RW (REX_PREFIX | REX_R | REX_W) 53949f9b365SRichard Lowe #define REX_BW (REX_PREFIX | REX_B | REX_W) 54049f9b365SRichard Lowe #define REX_BRW (REX_PREFIX | REX_B | REX_R | REX_W) 54149f9b365SRichard Lowe 54249f9b365SRichard Lowe #define REG_ESP 0x4 54349f9b365SRichard Lowe 54449f9b365SRichard Lowe #define INSN_ADDMR 0x03 /* addq mem,reg */ 54549f9b365SRichard Lowe #define INSN_ADDIR 0x81 /* addq imm,reg */ 54649f9b365SRichard Lowe #define INSN_MOVMR 0x8b /* movq mem,reg */ 54749f9b365SRichard Lowe #define INSN_MOVIR 0xc7 /* movq imm,reg */ 54849f9b365SRichard Lowe #define INSN_LEA 0x8d /* leaq mem,reg */ 5495aefb655Srie 5505aefb655Srie static Fixupret 5515aefb655Srie tls_fixups(Ofl_desc *ofl, Rel_desc *arsp) 5525aefb655Srie { 5535aefb655Srie Sym_desc *sdp = arsp->rel_sym; 5545aefb655Srie Word rtype = arsp->rel_rtype; 5555aefb655Srie uchar_t *offset; 5565aefb655Srie 5575aefb655Srie offset = (uchar_t *)((uintptr_t)arsp->rel_roffset + 5585aefb655Srie (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) + 559bf994817SAli Bahrami (uintptr_t)RELAUX_GET_OSDESC(arsp)->os_outdata->d_buf); 5605aefb655Srie 56149f9b365SRichard Lowe /* 56249f9b365SRichard Lowe * Note that in certain of the original insn sequences below, the 56349f9b365SRichard Lowe * instructions are not necessarily adjacent 56449f9b365SRichard Lowe */ 5655aefb655Srie if (sdp->sd_ref == REF_DYN_NEED) { 5665aefb655Srie /* 5675aefb655Srie * IE reference model 5685aefb655Srie */ 5695aefb655Srie switch (rtype) { 5705aefb655Srie case R_AMD64_TLSGD: 5715aefb655Srie /* 5725aefb655Srie * GD -> IE 5735aefb655Srie * 5745aefb655Srie * Transition: 5755aefb655Srie * 0x00 .byte 0x66 5765aefb655Srie * 0x01 leaq x@tlsgd(%rip), %rdi 5775aefb655Srie * 0x08 .word 0x6666 5785aefb655Srie * 0x0a rex64 5795aefb655Srie * 0x0b call __tls_get_addr@plt 5805aefb655Srie * 0x10 5815aefb655Srie * To: 5825aefb655Srie * 0x00 movq %fs:0, %rax 5835aefb655Srie * 0x09 addq x@gottpoff(%rip), %rax 5845aefb655Srie * 0x10 5855aefb655Srie */ 5865aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 587bf994817SAli Bahrami R_AMD64_GOTTPOFF, arsp, ld_reloc_sym_name)); 5885aefb655Srie arsp->rel_rtype = R_AMD64_GOTTPOFF; 5895aefb655Srie arsp->rel_roffset += 8; 5905aefb655Srie arsp->rel_raddend = (Sxword)-4; 5915aefb655Srie 5925aefb655Srie /* 593051d39bbSrie * Adjust 'offset' to beginning of instruction 5945aefb655Srie * sequence. 5955aefb655Srie */ 5965aefb655Srie offset -= 4; 5975aefb655Srie (void) memcpy(offset, tlsinstr_gd_ie, 5985aefb655Srie sizeof (tlsinstr_gd_ie)); 5995aefb655Srie return (FIX_RELOC); 6005aefb655Srie 6015aefb655Srie case R_AMD64_PLT32: 6025aefb655Srie /* 603051d39bbSrie * Fixup done via the TLS_GD relocation. 6045aefb655Srie */ 6055aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 606bf994817SAli Bahrami R_AMD64_NONE, arsp, ld_reloc_sym_name)); 6075aefb655Srie return (FIX_DONE); 6085aefb655Srie } 6095aefb655Srie } 6105aefb655Srie 6115aefb655Srie /* 6125aefb655Srie * LE reference model 6135aefb655Srie */ 6145aefb655Srie switch (rtype) { 6155aefb655Srie case R_AMD64_TLSGD: 6165aefb655Srie /* 6175aefb655Srie * GD -> LE 6185aefb655Srie * 6195aefb655Srie * Transition: 6205aefb655Srie * 0x00 .byte 0x66 6215aefb655Srie * 0x01 leaq x@tlsgd(%rip), %rdi 6225aefb655Srie * 0x08 .word 0x6666 6235aefb655Srie * 0x0a rex64 6245aefb655Srie * 0x0b call __tls_get_addr@plt 6255aefb655Srie * 0x10 6265aefb655Srie * To: 6275aefb655Srie * 0x00 movq %fs:0, %rax 6285aefb655Srie * 0x09 leaq x@tpoff(%rax), %rax 6295aefb655Srie * 0x10 6305aefb655Srie */ 6315aefb655Srie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 632bf994817SAli Bahrami R_AMD64_TPOFF32, arsp, ld_reloc_sym_name)); 6335aefb655Srie arsp->rel_rtype = R_AMD64_TPOFF32; 6345aefb655Srie arsp->rel_roffset += 8; 6355aefb655Srie arsp->rel_raddend = 0; 6365aefb655Srie 6375aefb655Srie /* 638051d39bbSrie * Adjust 'offset' to beginning of instruction sequence. 6395aefb655Srie */ 6405aefb655Srie offset -= 4; 6415aefb655Srie (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); 6425aefb655Srie return (FIX_RELOC); 6435aefb655Srie 64449f9b365SRichard Lowe case R_AMD64_GOTTPOFF: { 6455aefb655Srie /* 6465aefb655Srie * IE -> LE 6475aefb655Srie * 64849f9b365SRichard Lowe * Transition 1: 64949f9b365SRichard Lowe * movq %fs:0, %reg 65049f9b365SRichard Lowe * addq x@gottpoff(%rip), %reg 6515aefb655Srie * To: 65249f9b365SRichard Lowe * movq %fs:0, %reg 65349f9b365SRichard Lowe * leaq x@tpoff(%reg), %reg 65449f9b365SRichard Lowe * 65549f9b365SRichard Lowe * Transition (as a special case): 65649f9b365SRichard Lowe * movq %fs:0, %r12/%rsp 65749f9b365SRichard Lowe * addq x@gottpoff(%rip), %r12/%rsp 65849f9b365SRichard Lowe * To: 65949f9b365SRichard Lowe * movq %fs:0, %r12/%rsp 66049f9b365SRichard Lowe * addq x@tpoff(%rax), %r12/%rsp 66149f9b365SRichard Lowe * 66249f9b365SRichard Lowe * Transition 2: 66349f9b365SRichard Lowe * movq x@gottpoff(%rip), %reg 66449f9b365SRichard Lowe * movq %fs:(%reg), %reg 66549f9b365SRichard Lowe * To: 66649f9b365SRichard Lowe * movq x@tpoff(%reg), %reg 66749f9b365SRichard Lowe * movq %fs:(%reg), %reg 6685aefb655Srie */ 66949f9b365SRichard Lowe Conv_inv_buf_t inv_buf; 67049f9b365SRichard Lowe uint8_t reg; /* Register */ 67149f9b365SRichard Lowe 67249f9b365SRichard Lowe offset -= 3; 67349f9b365SRichard Lowe 67449f9b365SRichard Lowe reg = offset[2] >> 3; /* Encoded dest. reg. operand */ 67549f9b365SRichard Lowe 676051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 677bf994817SAli Bahrami R_AMD64_TPOFF32, arsp, ld_reloc_sym_name)); 6785aefb655Srie arsp->rel_rtype = R_AMD64_TPOFF32; 6795aefb655Srie arsp->rel_raddend = 0; 6805aefb655Srie 6815aefb655Srie /* 68249f9b365SRichard Lowe * This is transition 2, and the special case of form 1 where 68349f9b365SRichard Lowe * a normal transition would index %rsp or %r12 and need a SIB 68449f9b365SRichard Lowe * byte in the leaq for which we lack space 6855aefb655Srie */ 68649f9b365SRichard Lowe if ((offset[1] == INSN_MOVMR) || 68749f9b365SRichard Lowe ((offset[1] == INSN_ADDMR) && (reg == REG_ESP))) { 6885aefb655Srie /* 68949f9b365SRichard Lowe * If we needed an extra bit of MOD.reg to refer to 69049f9b365SRichard Lowe * this register as the dest of the original movq we 69149f9b365SRichard Lowe * need an extra bit of MOD.rm to refer to it in the 69249f9b365SRichard Lowe * dest of the replacement movq or addq. 6935aefb655Srie */ 69449f9b365SRichard Lowe if (offset[0] == REX_RW) 69549f9b365SRichard Lowe offset[0] = REX_BW; 6965aefb655Srie 69749f9b365SRichard Lowe offset[1] = (offset[1] == INSN_MOVMR) ? 69849f9b365SRichard Lowe INSN_MOVIR : INSN_ADDIR; 69949f9b365SRichard Lowe offset[2] = 0xc0 | reg; 70049f9b365SRichard Lowe 70149f9b365SRichard Lowe return (FIX_RELOC); 70249f9b365SRichard Lowe } else if (offset[1] == INSN_ADDMR) { 70349f9b365SRichard Lowe /* 70449f9b365SRichard Lowe * If we needed an extra bit of MOD.reg to refer to 70549f9b365SRichard Lowe * this register in the dest of the addq we need an 70649f9b365SRichard Lowe * extra bit of both MOD.reg and MOD.rm to refer to it 70749f9b365SRichard Lowe * in the source and dest of the leaq 70849f9b365SRichard Lowe */ 70949f9b365SRichard Lowe if (offset[0] == REX_RW) 71049f9b365SRichard Lowe offset[0] = REX_BRW; 71149f9b365SRichard Lowe 71249f9b365SRichard Lowe offset[1] = INSN_LEA; 71349f9b365SRichard Lowe offset[2] = 0x80 | (reg << 3) | reg; 71449f9b365SRichard Lowe 71549f9b365SRichard Lowe return (FIX_RELOC); 71649f9b365SRichard Lowe } 71749f9b365SRichard Lowe 71849f9b365SRichard Lowe ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_REL_BADTLSINS), 71949f9b365SRichard Lowe conv_reloc_amd64_type(arsp->rel_rtype, 0, &inv_buf), 72049f9b365SRichard Lowe arsp->rel_isdesc->is_file->ifl_name, 72149f9b365SRichard Lowe ld_reloc_sym_name(arsp), 72249f9b365SRichard Lowe arsp->rel_isdesc->is_name, 72349f9b365SRichard Lowe EC_OFF(arsp->rel_roffset)); 72449f9b365SRichard Lowe return (FIX_ERROR); 72549f9b365SRichard Lowe } 7265aefb655Srie case R_AMD64_TLSLD: 7275aefb655Srie /* 7285aefb655Srie * LD -> LE 7295aefb655Srie * 7305aefb655Srie * Transition 7315aefb655Srie * 0x00 leaq x1@tlsgd(%rip), %rdi 7325aefb655Srie * 0x07 call __tls_get_addr@plt 7335aefb655Srie * 0x0c 7345aefb655Srie * To: 7355aefb655Srie * 0x00 .byte 0x66 7365aefb655Srie * 0x01 .byte 0x66 7375aefb655Srie * 0x02 .byte 0x66 7385aefb655Srie * 0x03 movq %fs:0, %rax 7395aefb655Srie */ 740051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 741bf994817SAli Bahrami R_AMD64_NONE, arsp, ld_reloc_sym_name)); 7425aefb655Srie offset -= 3; 7435aefb655Srie (void) memcpy(offset, tlsinstr_ld_le, sizeof (tlsinstr_ld_le)); 7445aefb655Srie return (FIX_DONE); 7455aefb655Srie 7465aefb655Srie case R_AMD64_DTPOFF32: 7475aefb655Srie /* 7485aefb655Srie * LD->LE 7495aefb655Srie * 7505aefb655Srie * Transition: 7515aefb655Srie * 0x00 leaq x1@dtpoff(%rax), %rcx 7525aefb655Srie * To: 7535aefb655Srie * 0x00 leaq x1@tpoff(%rax), %rcx 7545aefb655Srie */ 755051d39bbSrie DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, 756bf994817SAli Bahrami R_AMD64_TPOFF32, arsp, ld_reloc_sym_name)); 7575aefb655Srie arsp->rel_rtype = R_AMD64_TPOFF32; 7585aefb655Srie return (FIX_RELOC); 7595aefb655Srie } 7605aefb655Srie 7615aefb655Srie return (FIX_RELOC); 7625aefb655Srie } 7635aefb655Srie 764ba2be530Sab196087 static uintptr_t 7655aefb655Srie ld_do_activerelocs(Ofl_desc *ofl) 7665aefb655Srie { 7675aefb655Srie Rel_desc *arsp; 768bf994817SAli Bahrami Rel_cachebuf *rcbp; 76957ef7aa9SRod Evans Aliste idx; 7705aefb655Srie uintptr_t return_code = 1; 7711d9df23bSab196087 ofl_flag_t flags = ofl->ofl_flags; 7725aefb655Srie 773bf994817SAli Bahrami if (aplist_nitems(ofl->ofl_actrels.rc_list) != 0) 7745aefb655Srie DBG_CALL(Dbg_reloc_doact_title(ofl->ofl_lml)); 7757010c12aSrie 7765aefb655Srie /* 7775aefb655Srie * Process active relocations. 7785aefb655Srie */ 779bf994817SAli Bahrami REL_CACHE_TRAVERSE(&ofl->ofl_actrels, idx, rcbp, arsp) { 7805aefb655Srie uchar_t *addr; 7815aefb655Srie Xword value; 7825aefb655Srie Sym_desc *sdp; 7835aefb655Srie const char *ifl_name; 7845aefb655Srie Xword refaddr; 7855aefb655Srie int moved = 0; 7865aefb655Srie Gotref gref; 787bf994817SAli Bahrami Os_desc *osp; 7885aefb655Srie 7895aefb655Srie /* 790bf994817SAli Bahrami * If the section this relocation is against has been discarded 791bf994817SAli Bahrami * (-zignore), then discard (skip) the relocation itself. 7925aefb655Srie */ 7935aefb655Srie if ((arsp->rel_isdesc->is_flags & FLG_IS_DISCARD) && 794bf994817SAli Bahrami ((arsp->rel_flags & (FLG_REL_GOT | FLG_REL_BSS | 7955aefb655Srie FLG_REL_PLT | FLG_REL_NOINFO)) == 0)) { 796bf994817SAli Bahrami DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, arsp)); 7975aefb655Srie continue; 7985aefb655Srie } 7995aefb655Srie 8005aefb655Srie /* 801bf994817SAli Bahrami * We determine what the 'got reference' model (if required) 802bf994817SAli Bahrami * is at this point. This needs to be done before tls_fixup() 803bf994817SAli Bahrami * since it may 'transition' our instructions. 8045aefb655Srie * 8055aefb655Srie * The got table entries have already been assigned, 8065aefb655Srie * and we bind to those initial entries. 8075aefb655Srie */ 8085aefb655Srie if (arsp->rel_flags & FLG_REL_DTLS) 8095aefb655Srie gref = GOT_REF_TLSGD; 8105aefb655Srie else if (arsp->rel_flags & FLG_REL_MTLS) 8115aefb655Srie gref = GOT_REF_TLSLD; 8125aefb655Srie else if (arsp->rel_flags & FLG_REL_STLS) 8135aefb655Srie gref = GOT_REF_TLSIE; 8145aefb655Srie else 8155aefb655Srie gref = GOT_REF_GENERIC; 8165aefb655Srie 8175aefb655Srie /* 8185aefb655Srie * Perform any required TLS fixups. 8195aefb655Srie */ 8205aefb655Srie if (arsp->rel_flags & FLG_REL_TLSFIX) { 8215aefb655Srie Fixupret ret; 8225aefb655Srie 8235aefb655Srie if ((ret = tls_fixups(ofl, arsp)) == FIX_ERROR) 8245aefb655Srie return (S_ERROR); 8255aefb655Srie if (ret == FIX_DONE) 8265aefb655Srie continue; 8275aefb655Srie } 8285aefb655Srie 8295aefb655Srie /* 8305aefb655Srie * If this is a relocation against a move table, or 8315aefb655Srie * expanded move table, adjust the relocation entries. 8325aefb655Srie */ 833bf994817SAli Bahrami if (RELAUX_GET_MOVE(arsp)) 8345aefb655Srie ld_adj_movereloc(ofl, arsp); 8355aefb655Srie 8365aefb655Srie sdp = arsp->rel_sym; 8375aefb655Srie refaddr = arsp->rel_roffset + 8385aefb655Srie (Off)_elf_getxoff(arsp->rel_isdesc->is_indata); 8395aefb655Srie 8405aefb655Srie if ((arsp->rel_flags & FLG_REL_CLVAL) || 8415aefb655Srie (arsp->rel_flags & FLG_REL_GOTCL)) 8425aefb655Srie value = 0; 843bf994817SAli Bahrami else if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) { 8445aefb655Srie Sym_desc *sym; 8455aefb655Srie 8465aefb655Srie /* 8475aefb655Srie * The value for a symbol pointing to a SECTION 8485aefb655Srie * is based off of that sections position. 8495aefb655Srie */ 8505aefb655Srie if ((sdp->sd_isc->is_flags & FLG_IS_RELUPD) && 8515aefb655Srie /* LINTED */ 852bf994817SAli Bahrami (sym = ld_am_I_partial(arsp, arsp->rel_raddend))) { 8535aefb655Srie /* 854bf994817SAli Bahrami * The symbol was moved, so adjust the value 855bf994817SAli Bahrami * relative to the new section. 8565aefb655Srie */ 8575aefb655Srie value = sym->sd_sym->st_value; 8585aefb655Srie moved = 1; 859b26cc8daSAli Bahrami 860b26cc8daSAli Bahrami /* 861bf994817SAli Bahrami * The original raddend covers the displacement 862bf994817SAli Bahrami * from the section start to the desired 863bf994817SAli Bahrami * address. The value computed above gets us 864bf994817SAli Bahrami * from the section start to the start of the 865bf994817SAli Bahrami * symbol range. Adjust the old raddend to 866bf994817SAli Bahrami * remove the offset from section start to 867bf994817SAli Bahrami * symbol start, leaving the displacement 868bf994817SAli Bahrami * within the range of the symbol. 869b26cc8daSAli Bahrami */ 870bf994817SAli Bahrami arsp->rel_raddend -= sym->sd_osym->st_value; 8715aefb655Srie } else { 872bf994817SAli Bahrami value = _elf_getxoff(sdp->sd_isc->is_indata); 873bf994817SAli Bahrami if (sdp->sd_isc->is_shdr->sh_flags & SHF_ALLOC) 874bf994817SAli Bahrami value += sdp->sd_isc->is_osdesc-> 8755aefb655Srie os_shdr->sh_addr; 8765aefb655Srie } 8775aefb655Srie if (sdp->sd_isc->is_shdr->sh_flags & SHF_TLS) 8785aefb655Srie value -= ofl->ofl_tlsphdr->p_vaddr; 8792926dd2eSrie 8802926dd2eSrie } else if (IS_SIZE(arsp->rel_rtype)) { 8812926dd2eSrie /* 8822926dd2eSrie * Size relocations require the symbols size. 8832926dd2eSrie */ 8842926dd2eSrie value = sdp->sd_sym->st_size; 88508278a5eSRod Evans 88608278a5eSRod Evans } else if ((sdp->sd_flags & FLG_SY_CAP) && 88708278a5eSRod Evans sdp->sd_aux && sdp->sd_aux->sa_PLTndx) { 8885aefb655Srie /* 889bf994817SAli Bahrami * If relocation is against a capabilities symbol, we 890bf994817SAli Bahrami * need to jump to an associated PLT, so that at runtime 891bf994817SAli Bahrami * ld.so.1 is involved to determine the best binding 892bf994817SAli Bahrami * choice. Otherwise, the value is the symbols value. 8935aefb655Srie */ 89408278a5eSRod Evans value = ld_calc_plt_addr(sdp, ofl); 89508278a5eSRod Evans } else 8965aefb655Srie value = sdp->sd_sym->st_value; 8975aefb655Srie 8985aefb655Srie /* 8995aefb655Srie * Relocation against the GLOBAL_OFFSET_TABLE. 9005aefb655Srie */ 901bf994817SAli Bahrami if ((arsp->rel_flags & FLG_REL_GOT) && 902bf994817SAli Bahrami !ld_reloc_set_aux_osdesc(ofl, arsp, ofl->ofl_osgot)) 903bf994817SAli Bahrami return (S_ERROR); 904bf994817SAli Bahrami osp = RELAUX_GET_OSDESC(arsp); 9055aefb655Srie 9065aefb655Srie /* 907bf994817SAli Bahrami * If loadable and not producing a relocatable object add the 908bf994817SAli Bahrami * sections virtual address to the reference address. 9095aefb655Srie */ 9105aefb655Srie if ((arsp->rel_flags & FLG_REL_LOAD) && 9115aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) 9125aefb655Srie refaddr += arsp->rel_isdesc->is_osdesc-> 9135aefb655Srie os_shdr->sh_addr; 9145aefb655Srie 9155aefb655Srie /* 916bf994817SAli Bahrami * If this entry has a PLT assigned to it, its value is actually 917bf994817SAli Bahrami * the address of the PLT (and not the address of the function). 9185aefb655Srie */ 9195aefb655Srie if (IS_PLT(arsp->rel_rtype)) { 9205aefb655Srie if (sdp->sd_aux && sdp->sd_aux->sa_PLTndx) 9215aefb655Srie value = ld_calc_plt_addr(sdp, ofl); 9225aefb655Srie } 9235aefb655Srie 9245aefb655Srie /* 9255aefb655Srie * Add relocations addend to value. Add extra 9265aefb655Srie * relocation addend if needed. 9275aefb655Srie * 928bf994817SAli Bahrami * Note: For GOT relative relocations on amd64 we discard the 929bf994817SAli Bahrami * addend. It was relevant to the reference - not to the 930bf994817SAli Bahrami * data item being referenced (ie: that -4 thing). 9315aefb655Srie */ 9325aefb655Srie if ((arsp->rel_flags & FLG_REL_GOT) == 0) 933bf2f215aSAli Bahrami value += arsp->rel_raddend; 9345aefb655Srie 9355aefb655Srie /* 936bf994817SAli Bahrami * Determine whether the value needs further adjustment. Filter 937bf994817SAli Bahrami * through the attributes of the relocation to determine what 938bf994817SAli Bahrami * adjustment is required. Note, many of the following cases 939bf994817SAli Bahrami * are only applicable when a .got is present. As a .got is 940bf994817SAli Bahrami * not generated when a relocatable object is being built, 941bf994817SAli Bahrami * any adjustments that require a .got need to be skipped. 9425aefb655Srie */ 9435aefb655Srie if ((arsp->rel_flags & FLG_REL_GOT) && 9445aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 9455aefb655Srie Xword R1addr; 9465aefb655Srie uintptr_t R2addr; 9475aefb655Srie Word gotndx; 9485aefb655Srie Gotndx *gnp; 9495aefb655Srie 9505aefb655Srie /* 951bf994817SAli Bahrami * Perform relocation against GOT table. Since this 952bf994817SAli Bahrami * doesn't fit exactly into a relocation we place the 953bf994817SAli Bahrami * appropriate byte in the GOT directly 9545aefb655Srie * 9555aefb655Srie * Calculate offset into GOT at which to apply 9565aefb655Srie * the relocation. 9575aefb655Srie */ 958bf994817SAli Bahrami gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, ofl, arsp); 9595aefb655Srie assert(gnp); 9605aefb655Srie 9615aefb655Srie if (arsp->rel_rtype == R_AMD64_DTPOFF64) 9625aefb655Srie gotndx = gnp->gn_gotndx + 1; 9635aefb655Srie else 9645aefb655Srie gotndx = gnp->gn_gotndx; 9655aefb655Srie 9665aefb655Srie R1addr = (Xword)(gotndx * M_GOT_ENTSIZE); 9675aefb655Srie 9685aefb655Srie /* 9695aefb655Srie * Add the GOTs data's offset. 9705aefb655Srie */ 971bf994817SAli Bahrami R2addr = R1addr + (uintptr_t)osp->os_outdata->d_buf; 9725aefb655Srie 973bf994817SAli Bahrami DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, ELF_DBG_LD_ACT, 974bf994817SAli Bahrami M_MACH, SHT_RELA, arsp, R1addr, value, 975bf994817SAli Bahrami ld_reloc_sym_name)); 9765aefb655Srie 9775aefb655Srie /* 9785aefb655Srie * And do it. 9795aefb655Srie */ 980f3324781Sab196087 if (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) 981bf994817SAli Bahrami *(Xword *)R2addr = ld_bswap_Xword(value); 982f3324781Sab196087 else 9835aefb655Srie *(Xword *)R2addr = value; 9845aefb655Srie continue; 9855aefb655Srie 9865aefb655Srie } else if (IS_GOT_BASED(arsp->rel_rtype) && 9875aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 9885aefb655Srie value -= ofl->ofl_osgot->os_shdr->sh_addr; 9895aefb655Srie 9905aefb655Srie } else if (IS_GOTPCREL(arsp->rel_rtype) && 9915aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 9925aefb655Srie Gotndx *gnp; 9935aefb655Srie 9945aefb655Srie /* 9955aefb655Srie * Calculation: 9965aefb655Srie * G + GOT + A - P 9975aefb655Srie */ 998bf994817SAli Bahrami gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, ofl, arsp); 9995aefb655Srie assert(gnp); 1000bf994817SAli Bahrami value = (Xword)(ofl->ofl_osgot->os_shdr-> sh_addr) + 1001bf994817SAli Bahrami ((Xword)gnp->gn_gotndx * M_GOT_ENTSIZE) + 1002bf994817SAli Bahrami arsp->rel_raddend - refaddr; 10035aefb655Srie 10045aefb655Srie } else if (IS_GOT_PC(arsp->rel_rtype) && 10055aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 10065aefb655Srie value = (Xword)(ofl->ofl_osgot->os_shdr-> 10075aefb655Srie sh_addr) - refaddr + arsp->rel_raddend; 10085aefb655Srie 10095aefb655Srie } else if ((IS_PC_RELATIVE(arsp->rel_rtype)) && 10105aefb655Srie (((flags & FLG_OF_RELOBJ) == 0) || 1011bf994817SAli Bahrami (osp == sdp->sd_isc->is_osdesc))) { 10125aefb655Srie value -= refaddr; 10135aefb655Srie 10145aefb655Srie } else if (IS_TLS_INS(arsp->rel_rtype) && 10155aefb655Srie IS_GOT_RELATIVE(arsp->rel_rtype) && 10165aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 10175aefb655Srie Gotndx *gnp; 10185aefb655Srie 1019bf994817SAli Bahrami gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, ofl, arsp); 10205aefb655Srie assert(gnp); 10215aefb655Srie value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 10225aefb655Srie 10235aefb655Srie } else if (IS_GOT_RELATIVE(arsp->rel_rtype) && 10245aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 10255aefb655Srie Gotndx *gnp; 10265aefb655Srie 1027bf994817SAli Bahrami gnp = ld_find_got_ndx(sdp->sd_GOTndxs, gref, ofl, arsp); 10285aefb655Srie assert(gnp); 10295aefb655Srie value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE; 10305aefb655Srie 10315aefb655Srie } else if ((arsp->rel_flags & FLG_REL_STLS) && 10325aefb655Srie ((flags & FLG_OF_RELOBJ) == 0)) { 10335aefb655Srie Xword tlsstatsize; 10345aefb655Srie 10355aefb655Srie /* 10365aefb655Srie * This is the LE TLS reference model. Static 10375aefb655Srie * offset is hard-coded. 10385aefb655Srie */ 1039bf994817SAli Bahrami tlsstatsize = S_ROUND(ofl->ofl_tlsphdr->p_memsz, 10405aefb655Srie M_TLSSTATALIGN); 10415aefb655Srie value = tlsstatsize - value; 10425aefb655Srie 10435aefb655Srie /* 1044bf994817SAli Bahrami * Since this code is fixed up, it assumes a negative 1045bf994817SAli Bahrami * offset that can be added to the thread pointer. 10465aefb655Srie */ 10475aefb655Srie if (arsp->rel_rtype == R_AMD64_TPOFF32) 10485aefb655Srie value = -value; 10495aefb655Srie } 10505aefb655Srie 10515aefb655Srie if (arsp->rel_isdesc->is_file) 10525aefb655Srie ifl_name = arsp->rel_isdesc->is_file->ifl_name; 10535aefb655Srie else 10545aefb655Srie ifl_name = MSG_INTL(MSG_STR_NULL); 10555aefb655Srie 10565aefb655Srie /* 1057bf994817SAli Bahrami * Make sure we have data to relocate. Compiler and assembler 1058bf994817SAli Bahrami * developers have been known to generate relocations against 1059bf994817SAli Bahrami * invalid sections (normally .bss), so for their benefit give 1060bf994817SAli Bahrami * them sufficient information to help analyze the problem. 1061bf994817SAli Bahrami * End users should never see this. 10625aefb655Srie */ 10635aefb655Srie if (arsp->rel_isdesc->is_indata->d_buf == 0) { 1064de777a60Sab196087 Conv_inv_buf_t inv_buf; 1065de777a60Sab196087 10661007fd6fSAli Bahrami ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_REL_EMPTYSEC), 1067bf994817SAli Bahrami conv_reloc_amd64_type(arsp->rel_rtype, 0, &inv_buf), 1068bf994817SAli Bahrami ifl_name, ld_reloc_sym_name(arsp), 10694a8d0ea7SAli Bahrami EC_WORD(arsp->rel_isdesc->is_scnndx), 10705aefb655Srie arsp->rel_isdesc->is_name); 10715aefb655Srie return (S_ERROR); 10725aefb655Srie } 10735aefb655Srie 10745aefb655Srie /* 10755aefb655Srie * Get the address of the data item we need to modify. 10765aefb655Srie */ 10775aefb655Srie addr = (uchar_t *)((uintptr_t)arsp->rel_roffset + 1078bf994817SAli Bahrami (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata)); 10795aefb655Srie 1080635216b6SRod Evans DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml, ELF_DBG_LD_ACT, 1081bf994817SAli Bahrami M_MACH, SHT_RELA, arsp, EC_NATPTR(addr), value, 1082bf994817SAli Bahrami ld_reloc_sym_name)); 1083bf994817SAli Bahrami addr += (uintptr_t)osp->os_outdata->d_buf; 10845aefb655Srie 10855aefb655Srie if ((((uintptr_t)addr - (uintptr_t)ofl->ofl_nehdr) > 10865aefb655Srie ofl->ofl_size) || (arsp->rel_roffset > 1087bf994817SAli Bahrami osp->os_shdr->sh_size)) { 10885aefb655Srie int class; 1089de777a60Sab196087 Conv_inv_buf_t inv_buf; 10905aefb655Srie 1091bf994817SAli Bahrami if (((uintptr_t)addr - (uintptr_t)ofl->ofl_nehdr) > 1092bf994817SAli Bahrami ofl->ofl_size) 10935aefb655Srie class = ERR_FATAL; 10945aefb655Srie else 10955aefb655Srie class = ERR_WARNING; 10965aefb655Srie 10971007fd6fSAli Bahrami ld_eprintf(ofl, class, MSG_INTL(MSG_REL_INVALOFFSET), 1098bf994817SAli Bahrami conv_reloc_amd64_type(arsp->rel_rtype, 0, &inv_buf), 1099bf994817SAli Bahrami ifl_name, EC_WORD(arsp->rel_isdesc->is_scnndx), 1100bf994817SAli Bahrami arsp->rel_isdesc->is_name, ld_reloc_sym_name(arsp), 11015aefb655Srie EC_ADDR((uintptr_t)addr - 11025aefb655Srie (uintptr_t)ofl->ofl_nehdr)); 11035aefb655Srie 11045aefb655Srie if (class == ERR_FATAL) { 11055aefb655Srie return_code = S_ERROR; 11065aefb655Srie continue; 11075aefb655Srie } 11085aefb655Srie } 11095aefb655Srie 11105aefb655Srie /* 1111bf994817SAli Bahrami * The relocation is additive. Ignore the previous symbol 1112bf994817SAli Bahrami * value if this local partial symbol is expanded. 11135aefb655Srie */ 11145aefb655Srie if (moved) 11155aefb655Srie value -= *addr; 11165aefb655Srie 11175aefb655Srie /* 1118bf994817SAli Bahrami * If '-z noreloc' is specified - skip the do_reloc_ld stage. 11195aefb655Srie */ 1120f3324781Sab196087 if (OFL_DO_RELOC(ofl)) { 1121f3324781Sab196087 /* 1122bf994817SAli Bahrami * If this is a PROGBITS section and the running linker 1123bf994817SAli Bahrami * has a different byte order than the target host, 1124bf994817SAli Bahrami * tell do_reloc_ld() to swap bytes. 1125f3324781Sab196087 */ 1126bf994817SAli Bahrami if (do_reloc_ld(arsp, addr, &value, ld_reloc_sym_name, 1127bf994817SAli Bahrami ifl_name, OFL_SWAP_RELOC_DATA(ofl, arsp), 11281007fd6fSAli Bahrami ofl->ofl_lml) == 0) { 11291007fd6fSAli Bahrami ofl->ofl_flags |= FLG_OF_FATAL; 11305aefb655Srie return_code = S_ERROR; 11315aefb655Srie } 11325aefb655Srie } 11331007fd6fSAli Bahrami } 11345aefb655Srie return (return_code); 11355aefb655Srie } 11365aefb655Srie 1137ba2be530Sab196087 static uintptr_t 11385aefb655Srie ld_add_outrel(Word flags, Rel_desc *rsp, Ofl_desc *ofl) 11395aefb655Srie { 11405aefb655Srie Rel_desc *orsp; 11415aefb655Srie Sym_desc *sdp = rsp->rel_sym; 11425aefb655Srie 11435aefb655Srie /* 11445aefb655Srie * Static executables *do not* want any relocations against them. 11455aefb655Srie * Since our engine still creates relocations against a WEAK UNDEFINED 11465aefb655Srie * symbol in a static executable, it's best to disable them here 11475aefb655Srie * instead of through out the relocation code. 11485aefb655Srie */ 1149635216b6SRod Evans if (OFL_IS_STATIC_EXEC(ofl)) 11505aefb655Srie return (1); 11515aefb655Srie 11525aefb655Srie /* 1153*0bc0887eSRichard Lowe * If the symbol will be reduced, we can't leave outstanding 1154*0bc0887eSRichard Lowe * relocations against it, as nothing will ever be able to satisfy them 1155*0bc0887eSRichard Lowe * (and the symbol won't be in .dynsym 1156*0bc0887eSRichard Lowe */ 1157*0bc0887eSRichard Lowe if ((sdp != NULL) && 1158*0bc0887eSRichard Lowe (sdp->sd_sym->st_shndx == SHN_UNDEF) && 1159*0bc0887eSRichard Lowe (rsp->rel_rtype != M_R_NONE) && 1160*0bc0887eSRichard Lowe (rsp->rel_rtype != M_R_RELATIVE)) { 1161*0bc0887eSRichard Lowe if (ld_sym_reducable(ofl, sdp)) 1162*0bc0887eSRichard Lowe return (1); 1163*0bc0887eSRichard Lowe } 1164*0bc0887eSRichard Lowe 1165*0bc0887eSRichard Lowe /* 11665aefb655Srie * If we are adding a output relocation against a section 11675aefb655Srie * symbol (non-RELATIVE) then mark that section. These sections 11685aefb655Srie * will be added to the .dynsym symbol table. 11695aefb655Srie */ 11705aefb655Srie if (sdp && (rsp->rel_rtype != M_R_RELATIVE) && 11715aefb655Srie ((flags & FLG_REL_SCNNDX) || 11725aefb655Srie (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION))) { 11735aefb655Srie 11745aefb655Srie /* 11755aefb655Srie * If this is a COMMON symbol - no output section 11765aefb655Srie * exists yet - (it's created as part of sym_validate()). 11775aefb655Srie * So - we mark here that when it's created it should 11785aefb655Srie * be tagged with the FLG_OS_OUTREL flag. 11795aefb655Srie */ 11805aefb655Srie if ((sdp->sd_flags & FLG_SY_SPECSEC) && 11810bc07c75Srie (sdp->sd_sym->st_shndx == SHN_COMMON)) { 11825aefb655Srie if (ELF_ST_TYPE(sdp->sd_sym->st_info) != STT_TLS) 11835aefb655Srie ofl->ofl_flags1 |= FLG_OF1_BSSOREL; 11845aefb655Srie else 11855aefb655Srie ofl->ofl_flags1 |= FLG_OF1_TLSOREL; 11865aefb655Srie } else { 118708278a5eSRod Evans Os_desc *osp; 118808278a5eSRod Evans Is_desc *isp = sdp->sd_isc; 11895aefb655Srie 119008278a5eSRod Evans if (isp && ((osp = isp->is_osdesc) != NULL) && 119108278a5eSRod Evans ((osp->os_flags & FLG_OS_OUTREL) == 0)) { 11925aefb655Srie ofl->ofl_dynshdrcnt++; 11935aefb655Srie osp->os_flags |= FLG_OS_OUTREL; 11945aefb655Srie } 11955aefb655Srie } 11965aefb655Srie } 11975aefb655Srie 1198bf994817SAli Bahrami /* Enter it into the output relocation cache */ 1199bf994817SAli Bahrami if ((orsp = ld_reloc_enter(ofl, &ofl->ofl_outrels, rsp, flags)) == NULL) 1200bf994817SAli Bahrami return (S_ERROR); 12015aefb655Srie 12025aefb655Srie if (flags & FLG_REL_GOT) 12035aefb655Srie ofl->ofl_relocgotsz += (Xword)sizeof (Rela); 12045aefb655Srie else if (flags & FLG_REL_PLT) 12055aefb655Srie ofl->ofl_relocpltsz += (Xword)sizeof (Rela); 12065aefb655Srie else if (flags & FLG_REL_BSS) 12075aefb655Srie ofl->ofl_relocbsssz += (Xword)sizeof (Rela); 12085aefb655Srie else if (flags & FLG_REL_NOINFO) 12095aefb655Srie ofl->ofl_relocrelsz += (Xword)sizeof (Rela); 12105aefb655Srie else 1211bf994817SAli Bahrami RELAUX_GET_OSDESC(orsp)->os_szoutrels += (Xword)sizeof (Rela); 12125aefb655Srie 12135aefb655Srie if (orsp->rel_rtype == M_R_RELATIVE) 12145aefb655Srie ofl->ofl_relocrelcnt++; 12155aefb655Srie 12165aefb655Srie /* 12175aefb655Srie * We don't perform sorting on PLT relocations because 12185aefb655Srie * they have already been assigned a PLT index and if we 12195aefb655Srie * were to sort them we would have to re-assign the plt indexes. 12205aefb655Srie */ 12215aefb655Srie if (!(flags & FLG_REL_PLT)) 12225aefb655Srie ofl->ofl_reloccnt++; 12235aefb655Srie 12245aefb655Srie /* 12255aefb655Srie * Insure a GLOBAL_OFFSET_TABLE is generated if required. 12265aefb655Srie */ 12275aefb655Srie if (IS_GOT_REQUIRED(orsp->rel_rtype)) 12285aefb655Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 12295aefb655Srie 12305aefb655Srie /* 12315aefb655Srie * Identify and possibly warn of a displacement relocation. 12325aefb655Srie */ 12335aefb655Srie if (orsp->rel_flags & FLG_REL_DISP) { 12345aefb655Srie ofl->ofl_dtflags_1 |= DF_1_DISPRELPND; 12355aefb655Srie 12365aefb655Srie if (ofl->ofl_flags & FLG_OF_VERBOSE) 12375aefb655Srie ld_disp_errmsg(MSG_INTL(MSG_REL_DISPREL4), orsp, ofl); 12385aefb655Srie } 12395aefb655Srie DBG_CALL(Dbg_reloc_ors_entry(ofl->ofl_lml, ELF_DBG_LD, SHT_RELA, 12405aefb655Srie M_MACH, orsp)); 12415aefb655Srie return (1); 12425aefb655Srie } 12435aefb655Srie 12445aefb655Srie /* 12455aefb655Srie * process relocation for a LOCAL symbol 12465aefb655Srie */ 1247ba2be530Sab196087 static uintptr_t 12485aefb655Srie ld_reloc_local(Rel_desc * rsp, Ofl_desc * ofl) 12495aefb655Srie { 12501d9df23bSab196087 ofl_flag_t flags = ofl->ofl_flags; 12515aefb655Srie Sym_desc *sdp = rsp->rel_sym; 12520bc07c75Srie Word shndx = sdp->sd_sym->st_shndx; 12535aefb655Srie Word ortype = rsp->rel_rtype; 12545aefb655Srie 12555aefb655Srie /* 12565aefb655Srie * if ((shared object) and (not pc relative relocation) and 12575aefb655Srie * (not against ABS symbol)) 12585aefb655Srie * then 12595aefb655Srie * build R_AMD64_RELATIVE 12605aefb655Srie * fi 12615aefb655Srie */ 12625aefb655Srie if ((flags & FLG_OF_SHAROBJ) && (rsp->rel_flags & FLG_REL_LOAD) && 12632926dd2eSrie !(IS_PC_RELATIVE(rsp->rel_rtype)) && !(IS_SIZE(rsp->rel_rtype)) && 12645aefb655Srie !(IS_GOT_BASED(rsp->rel_rtype)) && 12655aefb655Srie !(rsp->rel_isdesc != NULL && 12665aefb655Srie (rsp->rel_isdesc->is_shdr->sh_type == SHT_SUNW_dof)) && 12675aefb655Srie (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) || 12685aefb655Srie (shndx != SHN_ABS) || (sdp->sd_aux && sdp->sd_aux->sa_symspec))) { 12695aefb655Srie 12705aefb655Srie /* 12715aefb655Srie * R_AMD64_RELATIVE updates a 64bit address, if this 12725aefb655Srie * relocation isn't a 64bit binding then we can not 12735aefb655Srie * simplify it to a RELATIVE relocation. 12745aefb655Srie */ 12755aefb655Srie if (reloc_table[ortype].re_fsize != sizeof (Addr)) { 12761d9df23bSab196087 return (ld_add_outrel(0, rsp, ofl)); 12775aefb655Srie } 12785aefb655Srie 12795aefb655Srie rsp->rel_rtype = R_AMD64_RELATIVE; 12805aefb655Srie if (ld_add_outrel(FLG_REL_ADVAL, rsp, ofl) == S_ERROR) 12815aefb655Srie return (S_ERROR); 12825aefb655Srie rsp->rel_rtype = ortype; 12835aefb655Srie return (1); 12845aefb655Srie } 12855aefb655Srie 12865aefb655Srie /* 12875aefb655Srie * If the relocation is against a 'non-allocatable' section 12885aefb655Srie * and we can not resolve it now - then give a warning 12895aefb655Srie * message. 12905aefb655Srie * 12915aefb655Srie * We can not resolve the symbol if either: 12925aefb655Srie * a) it's undefined 12935aefb655Srie * b) it's defined in a shared library and a 12945aefb655Srie * COPY relocation hasn't moved it to the executable 12955aefb655Srie * 12965aefb655Srie * Note: because we process all of the relocations against the 12975aefb655Srie * text segment before any others - we know whether 12985aefb655Srie * or not a copy relocation will be generated before 12995aefb655Srie * we get here (see reloc_init()->reloc_segments()). 13005aefb655Srie */ 13015aefb655Srie if (!(rsp->rel_flags & FLG_REL_LOAD) && 13025aefb655Srie ((shndx == SHN_UNDEF) || 13035aefb655Srie ((sdp->sd_ref == REF_DYN_NEED) && 13045aefb655Srie ((sdp->sd_flags & FLG_SY_MVTOCOMM) == 0)))) { 1305de777a60Sab196087 Conv_inv_buf_t inv_buf; 1306bf994817SAli Bahrami Os_desc *osp = RELAUX_GET_OSDESC(rsp); 1307de777a60Sab196087 13085aefb655Srie /* 13095aefb655Srie * If the relocation is against a SHT_SUNW_ANNOTATE 13105aefb655Srie * section - then silently ignore that the relocation 13115aefb655Srie * can not be resolved. 13125aefb655Srie */ 1313bf994817SAli Bahrami if (osp && (osp->os_shdr->sh_type == SHT_SUNW_ANNOTATE)) 13145aefb655Srie return (0); 13151007fd6fSAli Bahrami ld_eprintf(ofl, ERR_WARNING, MSG_INTL(MSG_REL_EXTERNSYM), 1316de777a60Sab196087 conv_reloc_amd64_type(rsp->rel_rtype, 0, &inv_buf), 13175aefb655Srie rsp->rel_isdesc->is_file->ifl_name, 1318bf994817SAli Bahrami ld_reloc_sym_name(rsp), osp->os_name); 13195aefb655Srie return (1); 13205aefb655Srie } 13215aefb655Srie 13225aefb655Srie /* 13235aefb655Srie * Perform relocation. 13245aefb655Srie */ 13255aefb655Srie return (ld_add_actrel(NULL, rsp, ofl)); 13265aefb655Srie } 13275aefb655Srie 13285aefb655Srie 1329ba2be530Sab196087 static uintptr_t 13305aefb655Srie ld_reloc_TLS(Boolean local, Rel_desc * rsp, Ofl_desc * ofl) 13315aefb655Srie { 13325aefb655Srie Word rtype = rsp->rel_rtype; 13335aefb655Srie Sym_desc *sdp = rsp->rel_sym; 13341d9df23bSab196087 ofl_flag_t flags = ofl->ofl_flags; 13355aefb655Srie Gotndx *gnp; 13365aefb655Srie 13375aefb655Srie /* 1338d326b23bSrie * If we're building an executable - use either the IE or LE access 1339d326b23bSrie * model. If we're building a shared object process any IE model. 13405aefb655Srie */ 1341d326b23bSrie if ((flags & FLG_OF_EXEC) || (IS_TLS_IE(rtype))) { 13425aefb655Srie /* 1343d326b23bSrie * Set the DF_STATIC_TLS flag. 13445aefb655Srie */ 13455aefb655Srie ofl->ofl_dtflags |= DF_STATIC_TLS; 13465aefb655Srie 1347d326b23bSrie if (!local || ((flags & FLG_OF_EXEC) == 0)) { 13485aefb655Srie /* 1349d326b23bSrie * Assign a GOT entry for static TLS references. 13505aefb655Srie */ 135157ef7aa9SRod Evans if ((gnp = ld_find_got_ndx(sdp->sd_GOTndxs, 135257ef7aa9SRod Evans GOT_REF_TLSIE, ofl, rsp)) == NULL) { 1353d326b23bSrie 1354d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, 1355d326b23bSrie gnp, GOT_REF_TLSIE, FLG_REL_STLS, 1356d326b23bSrie rtype, R_AMD64_TPOFF64, 0) == S_ERROR) 13575aefb655Srie return (S_ERROR); 13585aefb655Srie } 1359d326b23bSrie 1360d326b23bSrie /* 1361d326b23bSrie * IE access model. 1362d326b23bSrie */ 13635aefb655Srie if (IS_TLS_IE(rtype)) 13645aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 13655aefb655Srie 13665aefb655Srie /* 1367d326b23bSrie * Fixups are required for other executable models. 13685aefb655Srie */ 13695aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 13705aefb655Srie rsp, ofl)); 13715aefb655Srie } 1372d326b23bSrie 13735aefb655Srie /* 1374d326b23bSrie * LE access model. 13755aefb655Srie */ 13765aefb655Srie if (IS_TLS_LE(rtype)) 13775aefb655Srie return (ld_add_actrel(FLG_REL_STLS, rsp, ofl)); 1378d326b23bSrie 13795aefb655Srie return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS), 13805aefb655Srie rsp, ofl)); 13815aefb655Srie } 13825aefb655Srie 13835aefb655Srie /* 1384d326b23bSrie * Building a shared object. 1385d326b23bSrie * 1386d326b23bSrie * Assign a GOT entry for a dynamic TLS reference. 13875aefb655Srie */ 138857ef7aa9SRod Evans if (IS_TLS_LD(rtype) && ((gnp = ld_find_got_ndx(sdp->sd_GOTndxs, 138957ef7aa9SRod Evans GOT_REF_TLSLD, ofl, rsp)) == NULL)) { 1390d326b23bSrie 1391d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSLD, 139257ef7aa9SRod Evans FLG_REL_MTLS, rtype, R_AMD64_DTPMOD64, NULL) == S_ERROR) 13935aefb655Srie return (S_ERROR); 1394d326b23bSrie 13955aefb655Srie } else if (IS_TLS_GD(rtype) && 139657ef7aa9SRod Evans ((gnp = ld_find_got_ndx(sdp->sd_GOTndxs, GOT_REF_TLSGD, 139757ef7aa9SRod Evans ofl, rsp)) == NULL)) { 1398d326b23bSrie 1399d326b23bSrie if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSGD, 1400d326b23bSrie FLG_REL_DTLS, rtype, R_AMD64_DTPMOD64, 1401d326b23bSrie R_AMD64_DTPOFF64) == S_ERROR) 14025aefb655Srie return (S_ERROR); 14035aefb655Srie } 14045aefb655Srie 14055aefb655Srie if (IS_TLS_LD(rtype)) 14065aefb655Srie return (ld_add_actrel(FLG_REL_MTLS, rsp, ofl)); 14075aefb655Srie 14085aefb655Srie return (ld_add_actrel(FLG_REL_DTLS, rsp, ofl)); 14095aefb655Srie } 14105aefb655Srie 14115aefb655Srie /* ARGSUSED5 */ 1412ba2be530Sab196087 static uintptr_t 141357ef7aa9SRod Evans ld_assign_got_ndx(Alist **alpp, Gotndx *pgnp, Gotref gref, Ofl_desc *ofl, 14145aefb655Srie Rel_desc *rsp, Sym_desc *sdp) 14155aefb655Srie { 14165aefb655Srie Xword raddend; 141757ef7aa9SRod Evans Gotndx gn, *gnp; 141857ef7aa9SRod Evans Aliste idx; 14195aefb655Srie uint_t gotents; 14205aefb655Srie 14215aefb655Srie raddend = rsp->rel_raddend; 142257ef7aa9SRod Evans if (pgnp && (pgnp->gn_addend == raddend) && (pgnp->gn_gotref == gref)) 14235aefb655Srie return (1); 14245aefb655Srie 14255aefb655Srie if ((gref == GOT_REF_TLSGD) || (gref == GOT_REF_TLSLD)) 14265aefb655Srie gotents = 2; 14275aefb655Srie else 14285aefb655Srie gotents = 1; 14295aefb655Srie 143057ef7aa9SRod Evans gn.gn_addend = raddend; 143157ef7aa9SRod Evans gn.gn_gotndx = ofl->ofl_gotcnt; 143257ef7aa9SRod Evans gn.gn_gotref = gref; 14335aefb655Srie 14345aefb655Srie ofl->ofl_gotcnt += gotents; 14355aefb655Srie 14365aefb655Srie if (gref == GOT_REF_TLSLD) { 143757ef7aa9SRod Evans if (ofl->ofl_tlsldgotndx == NULL) { 143857ef7aa9SRod Evans if ((gnp = libld_malloc(sizeof (Gotndx))) == NULL) 143957ef7aa9SRod Evans return (S_ERROR); 144057ef7aa9SRod Evans (void) memcpy(gnp, &gn, sizeof (Gotndx)); 14415aefb655Srie ofl->ofl_tlsldgotndx = gnp; 144257ef7aa9SRod Evans } 14435aefb655Srie return (1); 14445aefb655Srie } 14455aefb655Srie 144657ef7aa9SRod Evans idx = 0; 144757ef7aa9SRod Evans for (ALIST_TRAVERSE(*alpp, idx, gnp)) { 144857ef7aa9SRod Evans if (gnp->gn_addend > raddend) 144957ef7aa9SRod Evans break; 14505aefb655Srie } 145157ef7aa9SRod Evans 145257ef7aa9SRod Evans /* 145357ef7aa9SRod Evans * GOT indexes are maintained on an Alist, where there is typically 145457ef7aa9SRod Evans * only one index. The usage of this list is to scan the list to find 145557ef7aa9SRod Evans * an index, and then apply that index immediately to a relocation. 145657ef7aa9SRod Evans * Thus there are no external references to these GOT index structures 145757ef7aa9SRod Evans * that can be compromised by the Alist being reallocated. 145857ef7aa9SRod Evans */ 145957ef7aa9SRod Evans if (alist_insert(alpp, &gn, sizeof (Gotndx), 146057ef7aa9SRod Evans AL_CNT_SDP_GOT, idx) == NULL) 146157ef7aa9SRod Evans return (S_ERROR); 146257ef7aa9SRod Evans 14635aefb655Srie return (1); 14645aefb655Srie } 14655aefb655Srie 1466ba2be530Sab196087 static void 14675aefb655Srie ld_assign_plt_ndx(Sym_desc * sdp, Ofl_desc *ofl) 14685aefb655Srie { 14695aefb655Srie sdp->sd_aux->sa_PLTndx = 1 + ofl->ofl_pltcnt++; 14705aefb655Srie sdp->sd_aux->sa_PLTGOTndx = ofl->ofl_gotcnt++; 14715aefb655Srie ofl->ofl_flags |= FLG_OF_BLDGOT; 14725aefb655Srie } 14735aefb655Srie 14745aefb655Srie static uchar_t plt0_template[M_PLT_ENTSIZE] = { 14755aefb655Srie /* 0x00 PUSHQ GOT+8(%rip) */ 0xff, 0x35, 0x00, 0x00, 0x00, 0x00, 14765aefb655Srie /* 0x06 JMP *GOT+16(%rip) */ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 14775aefb655Srie /* 0x0c NOP */ 0x90, 14785aefb655Srie /* 0x0d NOP */ 0x90, 14795aefb655Srie /* 0x0e NOP */ 0x90, 14805aefb655Srie /* 0x0f NOP */ 0x90 14815aefb655Srie }; 14825aefb655Srie 14835aefb655Srie /* 14845aefb655Srie * Initializes .got[0] with the _DYNAMIC symbol value. 14855aefb655Srie */ 1486ba2be530Sab196087 static uintptr_t 14875aefb655Srie ld_fillin_gotplt(Ofl_desc *ofl) 14885aefb655Srie { 1489ba2be530Sab196087 int bswap = (ofl->ofl_flags1 & FLG_OF1_ENCDIFF) != 0; 1490ba2be530Sab196087 14915aefb655Srie if (ofl->ofl_osgot) { 14925aefb655Srie Sym_desc *sdp; 14935aefb655Srie 14945aefb655Srie if ((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_DYNAMIC_U), 1495635216b6SRod Evans SYM_NOHASH, NULL, ofl)) != NULL) { 1496d326b23bSrie uchar_t *genptr; 1497d326b23bSrie 1498d326b23bSrie genptr = ((uchar_t *)ofl->ofl_osgot->os_outdata->d_buf + 14995aefb655Srie (M_GOT_XDYNAMIC * M_GOT_ENTSIZE)); 15005aefb655Srie /* LINTED */ 15015aefb655Srie *(Xword *)genptr = sdp->sd_sym->st_value; 1502ba2be530Sab196087 if (bswap) 1503ba2be530Sab196087 /* LINTED */ 1504ba2be530Sab196087 *(Xword *)genptr = 1505ba2be530Sab196087 /* LINTED */ 1506ba2be530Sab196087 ld_bswap_Xword(*(Xword *)genptr); 15075aefb655Srie } 15085aefb655Srie } 15095aefb655Srie 15105aefb655Srie /* 15115aefb655Srie * Fill in the reserved slot in the procedure linkage table the first 15125aefb655Srie * entry is: 15135aefb655Srie * 0x00 PUSHQ GOT+8(%rip) # GOT[1] 15145aefb655Srie * 0x06 JMP *GOT+16(%rip) # GOT[2] 15155aefb655Srie * 0x0c NOP 15165aefb655Srie * 0x0d NOP 15175aefb655Srie * 0x0e NOP 15185aefb655Srie * 0x0f NOP 15195aefb655Srie */ 1520f3324781Sab196087 if ((ofl->ofl_flags & FLG_OF_DYNAMIC) && ofl->ofl_osplt) { 15215aefb655Srie uchar_t *pltent; 15225aefb655Srie Xword val1; 15235aefb655Srie 15245aefb655Srie pltent = (uchar_t *)ofl->ofl_osplt->os_outdata->d_buf; 15255aefb655Srie bcopy(plt0_template, pltent, sizeof (plt0_template)); 15265aefb655Srie 15275aefb655Srie /* 1528f3324781Sab196087 * If '-z noreloc' is specified - skip the do_reloc_ld 1529f3324781Sab196087 * stage. 1530f3324781Sab196087 */ 1531f3324781Sab196087 if (!OFL_DO_RELOC(ofl)) 1532f3324781Sab196087 return (1); 1533f3324781Sab196087 1534f3324781Sab196087 /* 15355aefb655Srie * filin: 15365aefb655Srie * PUSHQ GOT + 8(%rip) 15375aefb655Srie * 15385aefb655Srie * Note: 0x06 below represents the offset to the 15395aefb655Srie * next instruction - which is what %rip will 15405aefb655Srie * be pointing at. 15415aefb655Srie */ 15425aefb655Srie val1 = (ofl->ofl_osgot->os_shdr->sh_addr) + 15435aefb655Srie (M_GOT_XLINKMAP * M_GOT_ENTSIZE) - 15445aefb655Srie ofl->ofl_osplt->os_shdr->sh_addr - 0x06; 15455aefb655Srie 1546bf994817SAli Bahrami if (do_reloc_ld(&rdesc_r_amd64_gotpcrel, &pltent[0x02], 1547bf994817SAli Bahrami &val1, syn_rdesc_sym_name, MSG_ORIG(MSG_SPECFIL_PLTENT), 1548bf994817SAli Bahrami bswap, ofl->ofl_lml) == 0) { 15491007fd6fSAli Bahrami ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_PLT_PLT0FAIL)); 15505aefb655Srie return (S_ERROR); 15515aefb655Srie } 15525aefb655Srie 15535aefb655Srie /* 15545aefb655Srie * filin: 15555aefb655Srie * JMP *GOT+16(%rip) 15565aefb655Srie */ 15575aefb655Srie val1 = (ofl->ofl_osgot->os_shdr->sh_addr) + 15585aefb655Srie (M_GOT_XRTLD * M_GOT_ENTSIZE) - 15595aefb655Srie ofl->ofl_osplt->os_shdr->sh_addr - 0x0c; 1560f3324781Sab196087 1561bf994817SAli Bahrami if (do_reloc_ld(&rdesc_r_amd64_gotpcrel, &pltent[0x08], 1562bf994817SAli Bahrami &val1, syn_rdesc_sym_name, MSG_ORIG(MSG_SPECFIL_PLTENT), 1563bf994817SAli Bahrami bswap, ofl->ofl_lml) == 0) { 15641007fd6fSAli Bahrami ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_PLT_PLT0FAIL)); 15655aefb655Srie return (S_ERROR); 15665aefb655Srie } 15675aefb655Srie } 1568f3324781Sab196087 15695aefb655Srie return (1); 15705aefb655Srie } 1571ba2be530Sab196087 1572ba2be530Sab196087 1573ba2be530Sab196087 1574ba2be530Sab196087 /* 1575ba2be530Sab196087 * Template for generating "void (*)(void)" function 1576ba2be530Sab196087 */ 1577ba2be530Sab196087 static const uchar_t nullfunc_tmpl[] = { /* amd64 */ 1578ba2be530Sab196087 /* 0x00 */ 0x55, /* pushq %rbp */ 1579ba2be530Sab196087 /* 0x01 */ 0x48, 0x8b, 0xec, /* movq %rsp,%rbp */ 1580ba2be530Sab196087 /* 0x04 */ 0x48, 0x8b, 0xe5, /* movq %rbp,%rsp */ 1581ba2be530Sab196087 /* 0x07 */ 0x5d, /* popq %rbp */ 1582ba2be530Sab196087 /* 0x08 */ 0xc3 /* ret */ 1583ba2be530Sab196087 }; 1584ba2be530Sab196087 1585ba2be530Sab196087 1586ba2be530Sab196087 /* 15873c573fccSAli Bahrami * Function used to provide fill padding in SHF_EXECINSTR sections 15883c573fccSAli Bahrami * 15893c573fccSAli Bahrami * entry: 15903c573fccSAli Bahrami * 15913c573fccSAli Bahrami * base - base address of section being filled 15923c573fccSAli Bahrami * offset - starting offset for fill within memory referenced by base 15933c573fccSAli Bahrami * cnt - # bytes to be filled 15943c573fccSAli Bahrami * 15953c573fccSAli Bahrami * exit: 15963c573fccSAli Bahrami * The fill has been completed. 15973c573fccSAli Bahrami */ 15983c573fccSAli Bahrami static void 15993c573fccSAli Bahrami execfill(void *base, off_t off, size_t cnt) 16003c573fccSAli Bahrami { 16013c573fccSAli Bahrami /* 16023c573fccSAli Bahrami * 0x90 is an X86 NOP instruction in both 32 and 64-bit worlds. 16033c573fccSAli Bahrami * There are no alignment constraints. 16043c573fccSAli Bahrami */ 16053c573fccSAli Bahrami (void) memset(off + (char *)base, 0x90, cnt); 16063c573fccSAli Bahrami } 16073c573fccSAli Bahrami 16083c573fccSAli Bahrami 16093c573fccSAli Bahrami /* 1610ba2be530Sab196087 * Return the ld_targ definition for this target. 1611ba2be530Sab196087 */ 1612ba2be530Sab196087 const Target * 1613ba2be530Sab196087 ld_targ_init_x86(void) 1614ba2be530Sab196087 { 1615ba2be530Sab196087 static const Target _ld_targ = { 1616ba2be530Sab196087 { /* Target_mach */ 1617ba2be530Sab196087 M_MACH, /* m_mach */ 1618ba2be530Sab196087 M_MACHPLUS, /* m_machplus */ 1619ba2be530Sab196087 M_FLAGSPLUS, /* m_flagsplus */ 1620ba2be530Sab196087 M_CLASS, /* m_class */ 1621ba2be530Sab196087 M_DATA, /* m_data */ 1622ba2be530Sab196087 1623ba2be530Sab196087 M_SEGM_ALIGN, /* m_segm_align */ 1624ba2be530Sab196087 M_SEGM_ORIGIN, /* m_segm_origin */ 1625bb3b4f6cSRod Evans M_SEGM_AORIGIN, /* m_segm_aorigin */ 1626ba2be530Sab196087 M_DATASEG_PERM, /* m_dataseg_perm */ 162769112eddSAli Bahrami M_STACK_PERM, /* m_stack_perm */ 1628ba2be530Sab196087 M_WORD_ALIGN, /* m_word_align */ 1629ba2be530Sab196087 MSG_ORIG(MSG_PTH_RTLD_AMD64), /* m_def_interp */ 1630ba2be530Sab196087 1631ba2be530Sab196087 /* Relocation type codes */ 1632ba2be530Sab196087 M_R_ARRAYADDR, /* m_r_arrayaddr */ 1633ba2be530Sab196087 M_R_COPY, /* m_r_copy */ 1634ba2be530Sab196087 M_R_GLOB_DAT, /* m_r_glob_dat */ 1635ba2be530Sab196087 M_R_JMP_SLOT, /* m_r_jmp_slot */ 1636ba2be530Sab196087 M_R_NUM, /* m_r_num */ 1637ba2be530Sab196087 M_R_NONE, /* m_r_none */ 1638ba2be530Sab196087 M_R_RELATIVE, /* m_r_relative */ 1639ba2be530Sab196087 M_R_REGISTER, /* m_r_register */ 1640ba2be530Sab196087 1641ba2be530Sab196087 /* Relocation related constants */ 1642ba2be530Sab196087 M_REL_DT_COUNT, /* m_rel_dt_count */ 1643ba2be530Sab196087 M_REL_DT_ENT, /* m_rel_dt_ent */ 1644ba2be530Sab196087 M_REL_DT_SIZE, /* m_rel_dt_size */ 1645ba2be530Sab196087 M_REL_DT_TYPE, /* m_rel_dt_type */ 1646ba2be530Sab196087 M_REL_SHT_TYPE, /* m_rel_sht_type */ 1647ba2be530Sab196087 1648ba2be530Sab196087 /* GOT related constants */ 1649ba2be530Sab196087 M_GOT_ENTSIZE, /* m_got_entsize */ 1650ba2be530Sab196087 M_GOT_XNumber, /* m_got_xnumber */ 1651ba2be530Sab196087 1652ba2be530Sab196087 /* PLT related constants */ 1653ba2be530Sab196087 M_PLT_ALIGN, /* m_plt_align */ 1654ba2be530Sab196087 M_PLT_ENTSIZE, /* m_plt_entsize */ 1655ba2be530Sab196087 M_PLT_RESERVSZ, /* m_plt_reservsz */ 1656ba2be530Sab196087 M_PLT_SHF_FLAGS, /* m_plt_shf_flags */ 1657ba2be530Sab196087 16587e16fca0SAli Bahrami /* Section type of .eh_frame/.eh_frame_hdr sections */ 16597e16fca0SAli Bahrami SHT_AMD64_UNWIND, /* m_sht_unwind */ 16607e16fca0SAli Bahrami 1661ba2be530Sab196087 M_DT_REGISTER, /* m_dt_register */ 1662ba2be530Sab196087 }, 1663ba2be530Sab196087 { /* Target_machid */ 1664ba2be530Sab196087 M_ID_ARRAY, /* id_array */ 1665ba2be530Sab196087 M_ID_BSS, /* id_bss */ 1666ba2be530Sab196087 M_ID_CAP, /* id_cap */ 166708278a5eSRod Evans M_ID_CAPINFO, /* id_capinfo */ 166808278a5eSRod Evans M_ID_CAPCHAIN, /* id_capchain */ 1669ba2be530Sab196087 M_ID_DATA, /* id_data */ 1670ba2be530Sab196087 M_ID_DYNAMIC, /* id_dynamic */ 1671ba2be530Sab196087 M_ID_DYNSORT, /* id_dynsort */ 1672ba2be530Sab196087 M_ID_DYNSTR, /* id_dynstr */ 1673ba2be530Sab196087 M_ID_DYNSYM, /* id_dynsym */ 1674ba2be530Sab196087 M_ID_DYNSYM_NDX, /* id_dynsym_ndx */ 1675ba2be530Sab196087 M_ID_GOT, /* id_got */ 1676ba2be530Sab196087 M_ID_UNKNOWN, /* id_gotdata (unused) */ 1677ba2be530Sab196087 M_ID_HASH, /* id_hash */ 1678ba2be530Sab196087 M_ID_INTERP, /* id_interp */ 1679ba2be530Sab196087 M_ID_LBSS, /* id_lbss */ 1680ba2be530Sab196087 M_ID_LDYNSYM, /* id_ldynsym */ 1681ba2be530Sab196087 M_ID_NOTE, /* id_note */ 1682ba2be530Sab196087 M_ID_NULL, /* id_null */ 1683ba2be530Sab196087 M_ID_PLT, /* id_plt */ 1684ba2be530Sab196087 M_ID_REL, /* id_rel */ 1685ba2be530Sab196087 M_ID_STRTAB, /* id_strtab */ 1686ba2be530Sab196087 M_ID_SYMINFO, /* id_syminfo */ 1687ba2be530Sab196087 M_ID_SYMTAB, /* id_symtab */ 1688ba2be530Sab196087 M_ID_SYMTAB_NDX, /* id_symtab_ndx */ 1689ba2be530Sab196087 M_ID_TEXT, /* id_text */ 1690ba2be530Sab196087 M_ID_TLS, /* id_tls */ 1691ba2be530Sab196087 M_ID_TLSBSS, /* id_tlsbss */ 1692ba2be530Sab196087 M_ID_UNKNOWN, /* id_unknown */ 1693ba2be530Sab196087 M_ID_UNWIND, /* id_unwind */ 16947e16fca0SAli Bahrami M_ID_UNWINDHDR, /* id_unwindhdr */ 1695ba2be530Sab196087 M_ID_USER, /* id_user */ 1696ba2be530Sab196087 M_ID_VERSION, /* id_version */ 1697ba2be530Sab196087 }, 1698ba2be530Sab196087 { /* Target_nullfunc */ 1699ba2be530Sab196087 nullfunc_tmpl, /* nf_template */ 1700ba2be530Sab196087 sizeof (nullfunc_tmpl), /* nf_size */ 1701ba2be530Sab196087 }, 17023c573fccSAli Bahrami { /* Target_fillfunc */ 17033c573fccSAli Bahrami execfill /* ff_execfill */ 17043c573fccSAli Bahrami }, 1705ba2be530Sab196087 { /* Target_machrel */ 1706ba2be530Sab196087 reloc_table, 1707ba2be530Sab196087 1708ba2be530Sab196087 ld_init_rel, /* mr_init_rel */ 1709ba2be530Sab196087 ld_mach_eflags, /* mr_mach_eflags */ 1710ba2be530Sab196087 ld_mach_make_dynamic, /* mr_mach_make_dynamic */ 1711ba2be530Sab196087 ld_mach_update_odynamic, /* mr_mach_update_odynamic */ 1712ba2be530Sab196087 ld_calc_plt_addr, /* mr_calc_plt_addr */ 1713ba2be530Sab196087 ld_perform_outreloc, /* mr_perform_outreloc */ 1714ba2be530Sab196087 ld_do_activerelocs, /* mr_do_activerelocs */ 1715ba2be530Sab196087 ld_add_outrel, /* mr_add_outrel */ 1716ba2be530Sab196087 NULL, /* mr_reloc_register */ 1717ba2be530Sab196087 ld_reloc_local, /* mr_reloc_local */ 1718ba2be530Sab196087 NULL, /* mr_reloc_GOTOP */ 1719ba2be530Sab196087 ld_reloc_TLS, /* mr_reloc_TLS */ 1720ba2be530Sab196087 NULL, /* mr_assign_got */ 172157ef7aa9SRod Evans ld_find_got_ndx, /* mr_find_got_ndx */ 1722ba2be530Sab196087 ld_calc_got_offset, /* mr_calc_got_offset */ 1723ba2be530Sab196087 ld_assign_got_ndx, /* mr_assign_got_ndx */ 1724ba2be530Sab196087 ld_assign_plt_ndx, /* mr_assign_plt_ndx */ 1725ba2be530Sab196087 NULL, /* mr_allocate_got */ 1726ba2be530Sab196087 ld_fillin_gotplt, /* mr_fillin_gotplt */ 1727ba2be530Sab196087 }, 1728ba2be530Sab196087 { /* Target_machsym */ 1729ba2be530Sab196087 NULL, /* ms_reg_check */ 1730ba2be530Sab196087 NULL, /* ms_mach_sym_typecheck */ 1731ba2be530Sab196087 NULL, /* ms_is_regsym */ 1732ba2be530Sab196087 NULL, /* ms_reg_find */ 1733ba2be530Sab196087 NULL /* ms_reg_enter */ 1734ba2be530Sab196087 } 1735ba2be530Sab196087 }; 1736ba2be530Sab196087 1737ba2be530Sab196087 return (&_ld_targ); 1738ba2be530Sab196087 } 1739