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 /*
235aefb655Srie  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
245aefb655Srie  * Use is subject to license terms.
255aefb655Srie  */
265aefb655Srie #pragma ident	"%Z%%M%	%I%	%E% SMI"
275aefb655Srie 
285aefb655Srie #include	<string.h>
295aefb655Srie #include	<stdio.h>
305aefb655Srie #include	<strings.h>
315aefb655Srie #include	<sys/elf_amd64.h>
325aefb655Srie #include	<debug.h>
335aefb655Srie #include	<reloc.h>
345aefb655Srie #include	"msg.h"
355aefb655Srie #include	"_libld.h"
365aefb655Srie 
375aefb655Srie Word
385aefb655Srie ld_init_rel(Rel_desc *reld, void *reloc)
395aefb655Srie {
405aefb655Srie 	Rela *	rel = (Rela *)reloc;
415aefb655Srie 
425aefb655Srie 	/* LINTED */
435aefb655Srie 	reld->rel_rtype = (Word)ELF_R_TYPE(rel->r_info);
445aefb655Srie 	reld->rel_roffset = rel->r_offset;
455aefb655Srie 	reld->rel_raddend = rel->r_addend;
465aefb655Srie 	reld->rel_typedata = 0;
475aefb655Srie 
485aefb655Srie 	reld->rel_flags |= FLG_REL_RELA;
495aefb655Srie 
505aefb655Srie 	return ((Word)ELF_R_SYM(rel->r_info));
515aefb655Srie }
525aefb655Srie 
535aefb655Srie void
545aefb655Srie ld_mach_eflags(Ehdr *ehdr, Ofl_desc *ofl)
555aefb655Srie {
565aefb655Srie 	ofl->ofl_dehdr->e_flags |= ehdr->e_flags;
575aefb655Srie }
585aefb655Srie 
595aefb655Srie void
605aefb655Srie ld_mach_make_dynamic(Ofl_desc *ofl, size_t *cnt)
615aefb655Srie {
625aefb655Srie 	if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) {
635aefb655Srie 		/*
645aefb655Srie 		 * Create this entry if we are going to create a PLT table.
655aefb655Srie 		 */
665aefb655Srie 		if (ofl->ofl_pltcnt)
675aefb655Srie 			(*cnt)++;		/* DT_PLTGOT */
685aefb655Srie 	}
695aefb655Srie }
705aefb655Srie 
715aefb655Srie void
725aefb655Srie ld_mach_update_odynamic(Ofl_desc *ofl, Dyn **dyn)
735aefb655Srie {
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)++;
815aefb655Srie 	}
825aefb655Srie }
835aefb655Srie 
845aefb655Srie Xword
855aefb655Srie ld_calc_plt_addr(Sym_desc *sdp, Ofl_desc *ofl)
865aefb655Srie {
875aefb655Srie 	Xword	value;
885aefb655Srie 
895aefb655Srie 	value = (Xword)(ofl->ofl_osplt->os_shdr->sh_addr) +
905aefb655Srie 	    M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) * M_PLT_ENTSIZE);
915aefb655Srie 	return (value);
925aefb655Srie }
935aefb655Srie 
945aefb655Srie /*
955aefb655Srie  *  Build a single plt entry - code is:
965aefb655Srie  *	JMP	*name1@GOTPCREL(%rip)
975aefb655Srie  *	PUSHL	$index
985aefb655Srie  *	JMP	.PLT0
995aefb655Srie  */
1005aefb655Srie static uchar_t pltn_entry[M_PLT_ENTSIZE] = {
1015aefb655Srie /* 0x00 jmpq *name1@GOTPCREL(%rip) */	0xff, 0x25, 0x00, 0x00, 0x00, 0x00,
1025aefb655Srie /* 0x06 pushq $index */			0x68, 0x00, 0x00, 0x00, 0x00,
1035aefb655Srie /* 0x0b jmpq  .plt0(%rip) */		0xe9, 0x00, 0x00, 0x00, 0x00
1045aefb655Srie /* 0x10 */
1055aefb655Srie };
1065aefb655Srie 
1075aefb655Srie static uintptr_t
1085aefb655Srie plt_entry(Ofl_desc * ofl, Sym_desc * sdp)
1095aefb655Srie {
1105aefb655Srie 	uchar_t		*plt0, *pltent, *gotent;
1115aefb655Srie 	Sword		plt_off;
1125aefb655Srie 	Word		got_off;
1135aefb655Srie 	Xword		val1;
1145aefb655Srie 	Word		flags = ofl->ofl_flags;
1155aefb655Srie 	Word		dtflags1 = ofl->ofl_dtflags_1;
1165aefb655Srie 
1175aefb655Srie 	got_off = sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE;
1185aefb655Srie 	plt_off = M_PLT_RESERVSZ + ((sdp->sd_aux->sa_PLTndx - 1) *
1195aefb655Srie 	    M_PLT_ENTSIZE);
1205aefb655Srie 	plt0 = (uchar_t *)(ofl->ofl_osplt->os_outdata->d_buf);
1215aefb655Srie 	pltent = plt0 + plt_off;
1225aefb655Srie 	gotent = (uchar_t *)(ofl->ofl_osgot->os_outdata->d_buf) + got_off;
1235aefb655Srie 
1245aefb655Srie 	bcopy(pltn_entry, pltent, sizeof (pltn_entry));
1255aefb655Srie 	/*
1265aefb655Srie 	 * Fill in the got entry with the address of the next instruction.
1275aefb655Srie 	 */
1285aefb655Srie 	/* LINTED */
1295aefb655Srie 	*(Word *)gotent = ofl->ofl_osplt->os_shdr->sh_addr + plt_off +
1305aefb655Srie 	    M_PLT_INSSIZE;
1315aefb655Srie 
1325aefb655Srie 	/*
1335aefb655Srie 	 * patchup:
1345aefb655Srie 	 *	jmpq	*name1@gotpcrel(%rip)
1355aefb655Srie 	 *
1365aefb655Srie 	 * NOTE: 0x06 represents next instruction.
1375aefb655Srie 	 */
1385aefb655Srie 	val1 = (ofl->ofl_osgot->os_shdr->sh_addr + got_off) -
1395aefb655Srie 		(ofl->ofl_osplt->os_shdr->sh_addr + plt_off) - 0x06;
1405aefb655Srie 
1415aefb655Srie 	/*
1425aefb655Srie 	 * If '-z noreloc' is specified - skip the do_reloc
1435aefb655Srie 	 * stage.
1445aefb655Srie 	 */
1455aefb655Srie 	if ((flags & FLG_OF_RELOBJ) ||
1465aefb655Srie 	    !(dtflags1 & DF_1_NORELOC)) {
1475aefb655Srie 		if (do_reloc(R_AMD64_GOTPCREL, &pltent[0x02],
1485aefb655Srie 		    &val1, MSG_ORIG(MSG_SYM_PLTENT),
1495aefb655Srie 		    MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) {
1505aefb655Srie 			eprintf(ofl->ofl_lml, ERR_FATAL,
1515aefb655Srie 			    MSG_INTL(MSG_PLT_PLTNFAIL), sdp->sd_aux->sa_PLTndx,
1525aefb655Srie 			    demangle(sdp->sd_name));
1535aefb655Srie 			return (S_ERROR);
1545aefb655Srie 		}
1555aefb655Srie 	}
1565aefb655Srie 
1575aefb655Srie 	/*
1585aefb655Srie 	 * patchup:
1595aefb655Srie 	 *	pushq	$pltndx
1605aefb655Srie 	 */
1615aefb655Srie 	val1 = (Xword)(sdp->sd_aux->sa_PLTndx - 1);
1625aefb655Srie 	/*
1635aefb655Srie 	 * If '-z noreloc' is specified - skip the do_reloc
1645aefb655Srie 	 * stage.
1655aefb655Srie 	 */
1665aefb655Srie 	if ((flags & FLG_OF_RELOBJ) ||
1675aefb655Srie 	    !(dtflags1 & DF_1_NORELOC)) {
1685aefb655Srie 		if (do_reloc(R_AMD64_32, &pltent[0x07],
1695aefb655Srie 		    &val1, MSG_ORIG(MSG_SYM_PLTENT),
1705aefb655Srie 		    MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) {
1715aefb655Srie 			eprintf(ofl->ofl_lml, ERR_FATAL,
1725aefb655Srie 			    MSG_INTL(MSG_PLT_PLTNFAIL), sdp->sd_aux->sa_PLTndx,
1735aefb655Srie 			    demangle(sdp->sd_name));
1745aefb655Srie 			return (S_ERROR);
1755aefb655Srie 		}
1765aefb655Srie 	}
1775aefb655Srie 
1785aefb655Srie 	/*
1795aefb655Srie 	 * patchup:
1805aefb655Srie 	 *	jmpq	.plt0(%rip)
1815aefb655Srie 	 * NOTE: 0x10 represents next instruction.  The rather complex series
1825aefb655Srie 	 * of casts is necessary to sign extend an offset into a 64-bit value
1835aefb655Srie 	 * while satisfying various compiler error checks.  Handle with care.
1845aefb655Srie 	 */
1855aefb655Srie 	val1 = (Xword)((intptr_t)((uintptr_t)plt0 -
1865aefb655Srie 	    (uintptr_t)(&pltent[0x10])));
1875aefb655Srie 
1885aefb655Srie 	/*
1895aefb655Srie 	 * If '-z noreloc' is specified - skip the do_reloc
1905aefb655Srie 	 * stage.
1915aefb655Srie 	 */
1925aefb655Srie 	if ((flags & FLG_OF_RELOBJ) ||
1935aefb655Srie 	    !(dtflags1 & DF_1_NORELOC)) {
1945aefb655Srie 		if (do_reloc(R_AMD64_PC32, &pltent[0x0c],
1955aefb655Srie 		    &val1, MSG_ORIG(MSG_SYM_PLTENT),
1965aefb655Srie 		    MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) {
1975aefb655Srie 			eprintf(ofl->ofl_lml, ERR_FATAL,
1985aefb655Srie 			    MSG_INTL(MSG_PLT_PLTNFAIL), sdp->sd_aux->sa_PLTndx,
1995aefb655Srie 			    demangle(sdp->sd_name));
2005aefb655Srie 			return (S_ERROR);
2015aefb655Srie 		}
2025aefb655Srie 	}
2035aefb655Srie 	return (1);
2045aefb655Srie }
2055aefb655Srie 
2065aefb655Srie uintptr_t
2075aefb655Srie ld_perform_outreloc(Rel_desc * orsp, Ofl_desc * ofl)
2085aefb655Srie {
2095aefb655Srie 	Os_desc *	relosp, * osp = 0;
2105aefb655Srie 	Word		ndx;
2115aefb655Srie 	Xword		roffset, value;
2125aefb655Srie 	Sxword		raddend;
2135aefb655Srie 	Rela		rea;
2145aefb655Srie 	char		*relbits;
2155aefb655Srie 	Sym_desc *	sdp, * psym = (Sym_desc *)0;
2165aefb655Srie 	int		sectmoved = 0;
2175aefb655Srie 
2185aefb655Srie 	raddend = orsp->rel_raddend;
2195aefb655Srie 	sdp = orsp->rel_sym;
2205aefb655Srie 
2215aefb655Srie 	/*
2225aefb655Srie 	 * If the section this relocation is against has been discarded
2235aefb655Srie 	 * (-zignore), then also discard (skip) the relocation itself.
2245aefb655Srie 	 */
2255aefb655Srie 	if (orsp->rel_isdesc && ((orsp->rel_flags &
2265aefb655Srie 	    (FLG_REL_GOT | FLG_REL_BSS | FLG_REL_PLT | FLG_REL_NOINFO)) == 0) &&
2275aefb655Srie 	    (orsp->rel_isdesc->is_flags & FLG_IS_DISCARD)) {
2285aefb655Srie 		DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml, M_MACH, orsp));
2295aefb655Srie 		return (1);
2305aefb655Srie 	}
2315aefb655Srie 
2325aefb655Srie 	/*
2335aefb655Srie 	 * If this is a relocation against a move table, or expanded move
2345aefb655Srie 	 * table, adjust the relocation entries.
2355aefb655Srie 	 */
2365aefb655Srie 	if (orsp->rel_move)
2375aefb655Srie 		ld_adj_movereloc(ofl, orsp);
2385aefb655Srie 
2395aefb655Srie 	/*
2405aefb655Srie 	 * If this is a relocation against a section then we need to adjust the
2415aefb655Srie 	 * raddend field to compensate for the new position of the input section
2425aefb655Srie 	 * within the new output section.
2435aefb655Srie 	 */
2445aefb655Srie 	if (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION) {
2455aefb655Srie 		if (ofl->ofl_parsym.head &&
2465aefb655Srie 		    (sdp->sd_isc->is_flags & FLG_IS_RELUPD) &&
2475aefb655Srie 		    /* LINTED */
2485aefb655Srie 		    (psym = ld_am_I_partial(orsp, orsp->rel_raddend))) {
2495aefb655Srie 			DBG_CALL(Dbg_move_outsctadj(ofl->ofl_lml, psym));
2505aefb655Srie 			sectmoved = 1;
2515aefb655Srie 			if (ofl->ofl_flags & FLG_OF_RELOBJ)
2525aefb655Srie 				raddend = psym->sd_sym->st_value;
2535aefb655Srie 			else
2545aefb655Srie 				raddend = psym->sd_sym->st_value -
2555aefb655Srie 				    psym->sd_isc->is_osdesc->os_shdr->sh_addr;
2565aefb655Srie 			/* LINTED */
2575aefb655Srie 			raddend += (Off)_elf_getxoff(psym->sd_isc->is_indata);
2585aefb655Srie 			if (psym->sd_isc->is_shdr->sh_flags & SHF_ALLOC)
2595aefb655Srie 				raddend +=
2605aefb655Srie 				psym->sd_isc->is_osdesc->os_shdr->sh_addr;
2615aefb655Srie 		} else {
2625aefb655Srie 			/* LINTED */
2635aefb655Srie 			raddend += (Off)_elf_getxoff(sdp->sd_isc->is_indata);
2645aefb655Srie 			if (sdp->sd_isc->is_shdr->sh_flags & SHF_ALLOC)
2655aefb655Srie 				raddend +=
2665aefb655Srie 				sdp->sd_isc->is_osdesc->os_shdr->sh_addr;
2675aefb655Srie 		}
2685aefb655Srie 	}
2695aefb655Srie 
2705aefb655Srie 	value = sdp->sd_sym->st_value;
2715aefb655Srie 
2725aefb655Srie 	if (orsp->rel_flags & FLG_REL_GOT) {
2735aefb655Srie 		/*
2745aefb655Srie 		 * Note: for GOT relative relocations on amd64
2755aefb655Srie 		 *	 we discard the addend.  It was relevant
2765aefb655Srie 		 *	 to the reference - not to the data item
2775aefb655Srie 		 *	 being referenced (ie: that -4 thing).
2785aefb655Srie 		 */
2795aefb655Srie 		raddend = 0;
2805aefb655Srie 		osp = ofl->ofl_osgot;
2815aefb655Srie 		roffset = ld_calc_got_offset(orsp, ofl);
2825aefb655Srie 
2835aefb655Srie 	} else if (orsp->rel_flags & FLG_REL_PLT) {
2845aefb655Srie 		/*
2855aefb655Srie 		 * Note that relocations for PLT's actually
2865aefb655Srie 		 * cause a relocation againt the GOT.
2875aefb655Srie 		 */
2885aefb655Srie 		osp = ofl->ofl_osplt;
2895aefb655Srie 		roffset = (ofl->ofl_osgot->os_shdr->sh_addr) +
2905aefb655Srie 		    sdp->sd_aux->sa_PLTGOTndx * M_GOT_ENTSIZE;
2915aefb655Srie 		raddend = 0;
2925aefb655Srie 		if (plt_entry(ofl, sdp) == S_ERROR)
2935aefb655Srie 			return (S_ERROR);
2945aefb655Srie 
2955aefb655Srie 	} else if (orsp->rel_flags & FLG_REL_BSS) {
2965aefb655Srie 		/*
2975aefb655Srie 		 * This must be a R_AMD64_COPY.  For these set the roffset to
2985aefb655Srie 		 * point to the new symbols location.
2995aefb655Srie 		 */
3005aefb655Srie 		osp = ofl->ofl_isbss->is_osdesc;
3015aefb655Srie 		roffset = value;
3025aefb655Srie 
3035aefb655Srie 		/*
3045aefb655Srie 		 * The raddend doesn't mean anything in a R_SPARC_COPY
3055aefb655Srie 		 * relocation.  Null it out because it can confuse people.
3065aefb655Srie 		 */
3075aefb655Srie 		raddend = 0;
3085aefb655Srie 	} else {
3095aefb655Srie 		osp = orsp->rel_osdesc;
3105aefb655Srie 
3115aefb655Srie 		/*
3125aefb655Srie 		 * Calculate virtual offset of reference point; equals offset
3135aefb655Srie 		 * into section + vaddr of section for loadable sections, or
3145aefb655Srie 		 * offset plus section displacement for nonloadable sections.
3155aefb655Srie 		 */
3165aefb655Srie 		roffset = orsp->rel_roffset +
3175aefb655Srie 		    (Off)_elf_getxoff(orsp->rel_isdesc->is_indata);
3185aefb655Srie 		if (!(ofl->ofl_flags & FLG_OF_RELOBJ))
3195aefb655Srie 			roffset += orsp->rel_isdesc->is_osdesc->
3205aefb655Srie 			    os_shdr->sh_addr;
3215aefb655Srie 	}
3225aefb655Srie 
3235aefb655Srie 	if ((osp == 0) || ((relosp = osp->os_relosdesc) == 0))
3245aefb655Srie 		relosp = ofl->ofl_osrel;
3255aefb655Srie 
3265aefb655Srie 	/*
3275aefb655Srie 	 * Assign the symbols index for the output relocation.  If the
3285aefb655Srie 	 * relocation refers to a SECTION symbol then it's index is based upon
3295aefb655Srie 	 * the output sections symbols index.  Otherwise the index can be
3305aefb655Srie 	 * derived from the symbols index itself.
3315aefb655Srie 	 */
3325aefb655Srie 	if (orsp->rel_rtype == R_AMD64_RELATIVE)
3335aefb655Srie 		ndx = STN_UNDEF;
3345aefb655Srie 	else if ((orsp->rel_flags & FLG_REL_SCNNDX) ||
3355aefb655Srie 	    (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION)) {
3365aefb655Srie 		if (sectmoved == 0) {
3375aefb655Srie 			/*
3385aefb655Srie 			 * Check for a null input section. This can
3395aefb655Srie 			 * occur if this relocation references a symbol
3405aefb655Srie 			 * generated by sym_add_sym().
3415aefb655Srie 			 */
3425aefb655Srie 			if ((sdp->sd_isc != 0) &&
3435aefb655Srie 			    (sdp->sd_isc->is_osdesc != 0))
3445aefb655Srie 				ndx = sdp->sd_isc->is_osdesc->os_scnsymndx;
3455aefb655Srie 			else
3465aefb655Srie 				ndx = sdp->sd_shndx;
3475aefb655Srie 		} else
3485aefb655Srie 			ndx = ofl->ofl_sunwdata1ndx;
3495aefb655Srie 	} else
3505aefb655Srie 		ndx = sdp->sd_symndx;
3515aefb655Srie 
3525aefb655Srie 	/*
3535aefb655Srie 	 * Add the symbols 'value' to the addend field.
3545aefb655Srie 	 */
3555aefb655Srie 	if (orsp->rel_flags & FLG_REL_ADVAL)
3565aefb655Srie 		raddend += value;
3575aefb655Srie 
3585aefb655Srie 	/*
3595aefb655Srie 	 * addend field for R_AMD64_DTPMOD64 means nothing.  The addend
3605aefb655Srie 	 * is propogated in the corresponding R_AMD64_DTPOFF64
3615aefb655Srie 	 * relocation.
3625aefb655Srie 	 */
3635aefb655Srie 	if (orsp->rel_rtype == R_AMD64_DTPMOD64)
3645aefb655Srie 		raddend = 0;
3655aefb655Srie 
3665aefb655Srie 	relbits = (char *)relosp->os_outdata->d_buf;
3675aefb655Srie 
3685aefb655Srie 	rea.r_info = ELF_R_INFO(ndx, orsp->rel_rtype);
3695aefb655Srie 	rea.r_offset = roffset;
3705aefb655Srie 	rea.r_addend = raddend;
3715aefb655Srie 	DBG_CALL(Dbg_reloc_out(ofl, ELF_DBG_LD, SHT_RELA, &rea, relosp->os_name,
3725aefb655Srie 	    orsp->rel_sname));
3735aefb655Srie 
3745aefb655Srie 	/*
3755aefb655Srie 	 * Assert we haven't walked off the end of our relocation table.
3765aefb655Srie 	 */
3775aefb655Srie 	assert(relosp->os_szoutrels <= relosp->os_shdr->sh_size);
3785aefb655Srie 
3795aefb655Srie 	(void) memcpy((relbits + relosp->os_szoutrels),
3805aefb655Srie 	    (char *)&rea, sizeof (Rela));
3815aefb655Srie 	relosp->os_szoutrels += (Xword)sizeof (Rela);
3825aefb655Srie 
3835aefb655Srie 	/*
3845aefb655Srie 	 * Determine if this relocation is against a non-writable, allocatable
3855aefb655Srie 	 * section.  If so we may need to provide a text relocation diagnostic.
3865aefb655Srie 	 * Note that relocations against the .plt (R_AMD64_JUMP_SLOT) actually
3875aefb655Srie 	 * result in modifications to the .got.
3885aefb655Srie 	 */
3895aefb655Srie 	if (orsp->rel_rtype == R_AMD64_JUMP_SLOT)
3905aefb655Srie 		osp = ofl->ofl_osgot;
3915aefb655Srie 
3925aefb655Srie 	ld_reloc_remain_entry(orsp, osp, ofl);
3935aefb655Srie 	return (1);
3945aefb655Srie }
3955aefb655Srie 
3965aefb655Srie /*
3975aefb655Srie  * amd64 Instructions for TLS processing
3985aefb655Srie  */
3995aefb655Srie static uchar_t tlsinstr_gd_ie[] = {
4005aefb655Srie 	/*
4015aefb655Srie 	 *	0x00 movq %fs:0, %rax
4025aefb655Srie 	 */
4035aefb655Srie 	0x64, 0x48, 0x8b, 0x04, 0x25,
4045aefb655Srie 	0x00, 0x00, 0x00, 0x00,
4055aefb655Srie 	/*
4065aefb655Srie 	 *	0x09 addq x@gottpoff(%rip), %rax
4075aefb655Srie 	 */
4085aefb655Srie 	0x48, 0x03, 0x05, 0x00, 0x00,
4095aefb655Srie 	0x00, 0x00
4105aefb655Srie };
4115aefb655Srie 
4125aefb655Srie static uchar_t tlsinstr_gd_le[] = {
4135aefb655Srie 	/*
4145aefb655Srie 	 *	0x00 movq %fs:0, %rax
4155aefb655Srie 	 */
4165aefb655Srie 	0x64, 0x48, 0x8b, 0x04, 0x25,
4175aefb655Srie 	0x00, 0x00, 0x00, 0x00,
4185aefb655Srie 	/*
4195aefb655Srie 	 *	0x09 leaq x@gottpoff(%rip), %rax
4205aefb655Srie 	 */
4215aefb655Srie 	0x48, 0x8d, 0x80, 0x00, 0x00,
4225aefb655Srie 	0x00, 0x00
4235aefb655Srie };
4245aefb655Srie 
4255aefb655Srie static uchar_t tlsinstr_ld_le[] = {
4265aefb655Srie 	/*
4275aefb655Srie 	 * .byte 0x66
4285aefb655Srie 	 */
4295aefb655Srie 	0x66,
4305aefb655Srie 	/*
4315aefb655Srie 	 * .byte 0x66
4325aefb655Srie 	 */
4335aefb655Srie 	0x66,
4345aefb655Srie 	/*
4355aefb655Srie 	 * .byte 0x66
4365aefb655Srie 	 */
4375aefb655Srie 	0x66,
4385aefb655Srie 	/*
4395aefb655Srie 	 * movq %fs:0, %rax
4405aefb655Srie 	 */
4415aefb655Srie 	0x64, 0x48, 0x8b, 0x04, 0x25,
4425aefb655Srie 	0x00, 0x00, 0x00, 0x00
4435aefb655Srie };
4445aefb655Srie 
4455aefb655Srie 
4465aefb655Srie static Fixupret
4475aefb655Srie tls_fixups(Ofl_desc *ofl, Rel_desc *arsp)
4485aefb655Srie {
4495aefb655Srie 	Sym_desc	*sdp = arsp->rel_sym;
4505aefb655Srie 	Word		rtype = arsp->rel_rtype;
4515aefb655Srie 	uchar_t		*offset;
4525aefb655Srie 
4535aefb655Srie 	offset = (uchar_t *)((uintptr_t)arsp->rel_roffset +
4545aefb655Srie 	    (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) +
4555aefb655Srie 	    (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf);
4565aefb655Srie 
4575aefb655Srie 	if (sdp->sd_ref == REF_DYN_NEED) {
4585aefb655Srie 		/*
4595aefb655Srie 		 * IE reference model
4605aefb655Srie 		 */
4615aefb655Srie 		switch (rtype) {
4625aefb655Srie 		case R_AMD64_TLSGD:
4635aefb655Srie 			/*
4645aefb655Srie 			 *  GD -> IE
4655aefb655Srie 			 *
4665aefb655Srie 			 * Transition:
4675aefb655Srie 			 *	0x00 .byte 0x66
4685aefb655Srie 			 *	0x01 leaq x@tlsgd(%rip), %rdi
4695aefb655Srie 			 *	0x08 .word 0x6666
4705aefb655Srie 			 *	0x0a rex64
4715aefb655Srie 			 *	0x0b call __tls_get_addr@plt
4725aefb655Srie 			 *	0x10
4735aefb655Srie 			 * To:
4745aefb655Srie 			 *	0x00 movq %fs:0, %rax
4755aefb655Srie 			 *	0x09 addq x@gottpoff(%rip), %rax
4765aefb655Srie 			 *	0x10
4775aefb655Srie 			 */
4785aefb655Srie 			DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH,
4795aefb655Srie 			    rtype, R_AMD64_GOTTPOFF, arsp->rel_roffset,
4805aefb655Srie 			    sdp->sd_name));
4815aefb655Srie 			arsp->rel_rtype = R_AMD64_GOTTPOFF;
4825aefb655Srie 			arsp->rel_roffset += 8;
4835aefb655Srie 			arsp->rel_raddend = (Sxword)-4;
4845aefb655Srie 
4855aefb655Srie 			/*
4865aefb655Srie 			 * Addjust 'offset' to beginning of instruction
4875aefb655Srie 			 * sequence.
4885aefb655Srie 			 */
4895aefb655Srie 			offset -= 4;
4905aefb655Srie 			(void) memcpy(offset, tlsinstr_gd_ie,
4915aefb655Srie 			    sizeof (tlsinstr_gd_ie));
4925aefb655Srie 			return (FIX_RELOC);
4935aefb655Srie 
4945aefb655Srie 		case R_AMD64_PLT32:
4955aefb655Srie 			/*
4965aefb655Srie 			 * Fixup done via the TLS_GD relocation
4975aefb655Srie 			 */
4985aefb655Srie 			DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH,
4995aefb655Srie 			    rtype, R_AMD64_NONE, arsp->rel_roffset,
5005aefb655Srie 			    sdp->sd_name));
5015aefb655Srie 			return (FIX_DONE);
5025aefb655Srie 		}
5035aefb655Srie 	}
5045aefb655Srie 
5055aefb655Srie 	/*
5065aefb655Srie 	 * LE reference model
5075aefb655Srie 	 */
5085aefb655Srie 	switch (rtype) {
5095aefb655Srie 	case R_AMD64_TLSGD:
5105aefb655Srie 		/*
5115aefb655Srie 		 * GD -> LE
5125aefb655Srie 		 *
5135aefb655Srie 		 * Transition:
5145aefb655Srie 		 *	0x00 .byte 0x66
5155aefb655Srie 		 *	0x01 leaq x@tlsgd(%rip), %rdi
5165aefb655Srie 		 *	0x08 .word 0x6666
5175aefb655Srie 		 *	0x0a rex64
5185aefb655Srie 		 *	0x0b call __tls_get_addr@plt
5195aefb655Srie 		 *	0x10
5205aefb655Srie 		 * To:
5215aefb655Srie 		 *	0x00 movq %fs:0, %rax
5225aefb655Srie 		 *	0x09 leaq x@tpoff(%rax), %rax
5235aefb655Srie 		 *	0x10
5245aefb655Srie 		 */
5255aefb655Srie 		DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH,
5265aefb655Srie 		    rtype, R_AMD64_TPOFF32, arsp->rel_roffset, sdp->sd_name));
5275aefb655Srie 
5285aefb655Srie 		arsp->rel_rtype = R_AMD64_TPOFF32;
5295aefb655Srie 		arsp->rel_roffset += 8;
5305aefb655Srie 		arsp->rel_raddend = 0;
5315aefb655Srie 
5325aefb655Srie 		/*
5335aefb655Srie 		 * Addjust 'offset' to beginning of instruction
5345aefb655Srie 		 * sequence.
5355aefb655Srie 		 */
5365aefb655Srie 		offset -= 4;
5375aefb655Srie 		(void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le));
5385aefb655Srie 		return (FIX_RELOC);
5395aefb655Srie 
5405aefb655Srie 	case R_AMD64_GOTTPOFF:
5415aefb655Srie 		/*
5425aefb655Srie 		 * IE -> LE
5435aefb655Srie 		 *
5445aefb655Srie 		 * Transition:
5455aefb655Srie 		 *	0x00 movq %fs:0, %rax
5465aefb655Srie 		 *	0x09 addq x@gottopoff(%rip), %rax
5475aefb655Srie 		 *	0x10
5485aefb655Srie 		 * To:
5495aefb655Srie 		 *	0x00 movq %fs:0, %rax
5505aefb655Srie 		 *	0x09 leaq x@tpoff(%rax), %rax
5515aefb655Srie 		 *	0x10
5525aefb655Srie 		 */
5535aefb655Srie 		DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, rtype,
5545aefb655Srie 		    R_AMD64_TPOFF32, arsp->rel_roffset, sdp->sd_name));
5555aefb655Srie 
5565aefb655Srie 		arsp->rel_rtype = R_AMD64_TPOFF32;
5575aefb655Srie 		arsp->rel_raddend = 0;
5585aefb655Srie 
5595aefb655Srie 		/*
5605aefb655Srie 		 * Addjust 'offset' to beginning of instruction
5615aefb655Srie 		 * sequence.
5625aefb655Srie 		 */
5635aefb655Srie 		offset -= 12;
5645aefb655Srie 
5655aefb655Srie 		/*
5665aefb655Srie 		 * Same code sequence used in the GD -> LE
5675aefb655Srie 		 * transition.
5685aefb655Srie 		 */
5695aefb655Srie 		(void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le));
5705aefb655Srie 		return (FIX_RELOC);
5715aefb655Srie 
5725aefb655Srie 	case R_AMD64_TLSLD:
5735aefb655Srie 		/*
5745aefb655Srie 		 * LD -> LE
5755aefb655Srie 		 *
5765aefb655Srie 		 * Transition
5775aefb655Srie 		 *	0x00 leaq x1@tlsgd(%rip), %rdi
5785aefb655Srie 		 *	0x07 call __tls_get_addr@plt
5795aefb655Srie 		 *	0x0c
5805aefb655Srie 		 * To:
5815aefb655Srie 		 *	0x00 .byte 0x66
5825aefb655Srie 		 *	0x01 .byte 0x66
5835aefb655Srie 		 *	0x02 .byte 0x66
5845aefb655Srie 		 *	0x03 movq %fs:0, %rax
5855aefb655Srie 		 */
5865aefb655Srie 		DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, rtype,
5875aefb655Srie 		    R_AMD64_NONE, arsp->rel_roffset, sdp->sd_name));
5885aefb655Srie 		offset -= 3;
5895aefb655Srie 		(void) memcpy(offset, tlsinstr_ld_le, sizeof (tlsinstr_ld_le));
5905aefb655Srie 		return (FIX_DONE);
5915aefb655Srie 
5925aefb655Srie 	case R_AMD64_DTPOFF32:
5935aefb655Srie 		/*
5945aefb655Srie 		 * LD->LE
5955aefb655Srie 		 *
5965aefb655Srie 		 * Transition:
5975aefb655Srie 		 *	0x00 leaq x1@dtpoff(%rax), %rcx
5985aefb655Srie 		 * To:
5995aefb655Srie 		 *	0x00 leaq x1@tpoff(%rax), %rcx
6005aefb655Srie 		 */
6015aefb655Srie 		DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, rtype,
6025aefb655Srie 		    R_AMD64_TPOFF32, arsp->rel_roffset, sdp->sd_name));
6035aefb655Srie 		arsp->rel_rtype = R_AMD64_TPOFF32;
6045aefb655Srie 		arsp->rel_raddend = 0;
6055aefb655Srie 		return (FIX_RELOC);
6065aefb655Srie 	}
6075aefb655Srie 
6085aefb655Srie 	return (FIX_RELOC);
6095aefb655Srie }
6105aefb655Srie 
6115aefb655Srie uintptr_t
6125aefb655Srie ld_do_activerelocs(Ofl_desc *ofl)
6135aefb655Srie {
6145aefb655Srie 	Rel_desc	*arsp;
6155aefb655Srie 	Rel_cache	*rcp;
6165aefb655Srie 	Listnode	*lnp;
6175aefb655Srie 	uintptr_t	return_code = 1;
6185aefb655Srie 	Word		flags = ofl->ofl_flags;
6195aefb655Srie 	Word		dtflags1 = ofl->ofl_dtflags_1;
6205aefb655Srie 
6215aefb655Srie 	DBG_CALL(Dbg_reloc_doact_title(ofl->ofl_lml));
6225aefb655Srie 	/*
6235aefb655Srie 	 * Process active relocations.
6245aefb655Srie 	 */
6255aefb655Srie 	for (LIST_TRAVERSE(&ofl->ofl_actrels, lnp, rcp)) {
6265aefb655Srie 		/* LINTED */
6275aefb655Srie 		for (arsp = (Rel_desc *)(rcp + 1);
6285aefb655Srie 		    arsp < rcp->rc_free; arsp++) {
6295aefb655Srie 			uchar_t		*addr;
6305aefb655Srie 			Xword 		value;
6315aefb655Srie 			Sym_desc	*sdp;
6325aefb655Srie 			const char	*ifl_name;
6335aefb655Srie 			Xword		refaddr;
6345aefb655Srie 			int		moved = 0;
6355aefb655Srie 			Gotref		gref;
6365aefb655Srie 
6375aefb655Srie 			/*
6385aefb655Srie 			 * If the section this relocation is against has been
6395aefb655Srie 			 * discarded (-zignore), then discard (skip) the
6405aefb655Srie 			 * relocation itself.
6415aefb655Srie 			 */
6425aefb655Srie 			if ((arsp->rel_isdesc->is_flags & FLG_IS_DISCARD) &&
6435aefb655Srie 			    ((arsp->rel_flags &
6445aefb655Srie 			    (FLG_REL_GOT | FLG_REL_BSS |
6455aefb655Srie 			    FLG_REL_PLT | FLG_REL_NOINFO)) == 0)) {
6465aefb655Srie 				DBG_CALL(Dbg_reloc_discard(ofl->ofl_lml,
6475aefb655Srie 				    M_MACH, arsp));
6485aefb655Srie 				continue;
6495aefb655Srie 			}
6505aefb655Srie 
6515aefb655Srie 			/*
6525aefb655Srie 			 * We deteremine what the 'got reference'
6535aefb655Srie 			 * model (if required) is at this point.  This
6545aefb655Srie 			 * needs to be done before tls_fixup() since
6555aefb655Srie 			 * it may 'transition' our instructions.
6565aefb655Srie 			 *
6575aefb655Srie 			 * The got table entries have already been assigned,
6585aefb655Srie 			 * and we bind to those initial entries.
6595aefb655Srie 			 */
6605aefb655Srie 			if (arsp->rel_flags & FLG_REL_DTLS)
6615aefb655Srie 				gref = GOT_REF_TLSGD;
6625aefb655Srie 			else if (arsp->rel_flags & FLG_REL_MTLS)
6635aefb655Srie 				gref = GOT_REF_TLSLD;
6645aefb655Srie 			else if (arsp->rel_flags & FLG_REL_STLS)
6655aefb655Srie 				gref = GOT_REF_TLSIE;
6665aefb655Srie 			else
6675aefb655Srie 				gref = GOT_REF_GENERIC;
6685aefb655Srie 
6695aefb655Srie 			/*
6705aefb655Srie 			 * Perform any required TLS fixups.
6715aefb655Srie 			 */
6725aefb655Srie 			if (arsp->rel_flags & FLG_REL_TLSFIX) {
6735aefb655Srie 				Fixupret	ret;
6745aefb655Srie 
6755aefb655Srie 				if ((ret = tls_fixups(ofl, arsp)) == FIX_ERROR)
6765aefb655Srie 					return (S_ERROR);
6775aefb655Srie 				if (ret == FIX_DONE)
6785aefb655Srie 					continue;
6795aefb655Srie 			}
6805aefb655Srie 
6815aefb655Srie 			/*
6825aefb655Srie 			 * If this is a relocation against a move table, or
6835aefb655Srie 			 * expanded move table, adjust the relocation entries.
6845aefb655Srie 			 */
6855aefb655Srie 			if (arsp->rel_move)
6865aefb655Srie 				ld_adj_movereloc(ofl, arsp);
6875aefb655Srie 
6885aefb655Srie 			sdp = arsp->rel_sym;
6895aefb655Srie 			refaddr = arsp->rel_roffset +
6905aefb655Srie 			    (Off)_elf_getxoff(arsp->rel_isdesc->is_indata);
6915aefb655Srie 
6925aefb655Srie 			if ((arsp->rel_flags & FLG_REL_CLVAL) ||
6935aefb655Srie 			    (arsp->rel_flags & FLG_REL_GOTCL))
6945aefb655Srie 				value = 0;
6955aefb655Srie 			else if (ELF_ST_TYPE(sdp->sd_sym->st_info) ==
6965aefb655Srie 			    STT_SECTION) {
6975aefb655Srie 				Sym_desc	*sym;
6985aefb655Srie 
6995aefb655Srie 				/*
7005aefb655Srie 				 * The value for a symbol pointing to a SECTION
7015aefb655Srie 				 * is based off of that sections position.
7025aefb655Srie 				 *
7035aefb655Srie 				 * The second argument of the ld_am_I_partial()
7045aefb655Srie 				 * is the value stored at the target address
7055aefb655Srie 				 * relocation is going to be applied.
7065aefb655Srie 				 */
7075aefb655Srie 				if ((sdp->sd_isc->is_flags & FLG_IS_RELUPD) &&
7085aefb655Srie 				    /* LINTED */
7095aefb655Srie 				    (sym = ld_am_I_partial(arsp, *(Xword *)
7105aefb655Srie 				    ((uchar_t *)
7115aefb655Srie 				    arsp->rel_isdesc->is_indata->d_buf +
7125aefb655Srie 				    arsp->rel_roffset)))) {
7135aefb655Srie 					/*
7145aefb655Srie 					 * If the symbol is moved,
7155aefb655Srie 					 * adjust the value
7165aefb655Srie 					 */
7175aefb655Srie 					value = sym->sd_sym->st_value;
7185aefb655Srie 					moved = 1;
7195aefb655Srie 				} else {
7205aefb655Srie 					value = _elf_getxoff(
7215aefb655Srie 					    sdp->sd_isc->is_indata);
7225aefb655Srie 					if (sdp->sd_isc->is_shdr->sh_flags &
7235aefb655Srie 					    SHF_ALLOC)
7245aefb655Srie 					    value += sdp->sd_isc->is_osdesc->
7255aefb655Srie 					    os_shdr->sh_addr;
7265aefb655Srie 				}
7275aefb655Srie 				if (sdp->sd_isc->is_shdr->sh_flags & SHF_TLS)
7285aefb655Srie 					value -= ofl->ofl_tlsphdr->p_vaddr;
7295aefb655Srie 			} else {
7305aefb655Srie 				/*
7315aefb655Srie 				 * else the value is the symbols value
7325aefb655Srie 				 */
7335aefb655Srie 				value = sdp->sd_sym->st_value;
7345aefb655Srie 			}
7355aefb655Srie 
7365aefb655Srie 			/*
7375aefb655Srie 			 * Relocation against the GLOBAL_OFFSET_TABLE.
7385aefb655Srie 			 */
7395aefb655Srie 			if (arsp->rel_flags & FLG_REL_GOT)
7405aefb655Srie 				arsp->rel_osdesc = ofl->ofl_osgot;
7415aefb655Srie 
7425aefb655Srie 			/*
7435aefb655Srie 			 * If loadable and not producing a relocatable object
7445aefb655Srie 			 * add the sections virtual address to the reference
7455aefb655Srie 			 * address.
7465aefb655Srie 			 */
7475aefb655Srie 			if ((arsp->rel_flags & FLG_REL_LOAD) &&
7485aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0))
7495aefb655Srie 				refaddr += arsp->rel_isdesc->is_osdesc->
7505aefb655Srie 				    os_shdr->sh_addr;
7515aefb655Srie 
7525aefb655Srie 			/*
7535aefb655Srie 			 * If this entry has a PLT assigned to it, it's
7545aefb655Srie 			 * value is actually the address of the PLT (and
7555aefb655Srie 			 * not the address of the function).
7565aefb655Srie 			 */
7575aefb655Srie 			if (IS_PLT(arsp->rel_rtype)) {
7585aefb655Srie 				if (sdp->sd_aux && sdp->sd_aux->sa_PLTndx)
7595aefb655Srie 					value = ld_calc_plt_addr(sdp, ofl);
7605aefb655Srie 			}
7615aefb655Srie 
7625aefb655Srie 			/*
7635aefb655Srie 			 * Add relocations addend to value.  Add extra
7645aefb655Srie 			 * relocation addend if needed.
7655aefb655Srie 			 *
7665aefb655Srie 			 * Note: for GOT relative relocations on amd64
7675aefb655Srie 			 *	 we discard the addend.  It was relevant
7685aefb655Srie 			 *	 to the reference - not to the data item
7695aefb655Srie 			 *	 being referenced (ie: that -4 thing).
7705aefb655Srie 			 */
7715aefb655Srie 			if ((arsp->rel_flags & FLG_REL_GOT) == 0)
7725aefb655Srie 				value += arsp->rel_raddend;
7735aefb655Srie 
7745aefb655Srie 			/*
7755aefb655Srie 			 * Determine whether the value needs further adjustment.
7765aefb655Srie 			 * Filter through the attributes of the relocation to
7775aefb655Srie 			 * determine what adjustment is required.  Note, many
7785aefb655Srie 			 * of the following cases are only applicable when a
7795aefb655Srie 			 * .got is present.  As a .got is not generated when a
7805aefb655Srie 			 * relocatable object is being built, any adjustments
7815aefb655Srie 			 * that require a .got need to be skipped.
7825aefb655Srie 			 */
7835aefb655Srie 			if ((arsp->rel_flags & FLG_REL_GOT) &&
7845aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
7855aefb655Srie 				Xword		R1addr;
7865aefb655Srie 				uintptr_t	R2addr;
7875aefb655Srie 				Word		gotndx;
7885aefb655Srie 				Gotndx		*gnp;
7895aefb655Srie 
7905aefb655Srie 				/*
7915aefb655Srie 				 * Perform relocation against GOT table.  Since
7925aefb655Srie 				 * this doesn't fit exactly into a relocation
7935aefb655Srie 				 * we place the appropriate byte in the GOT
7945aefb655Srie 				 * directly
7955aefb655Srie 				 *
7965aefb655Srie 				 * Calculate offset into GOT at which to apply
7975aefb655Srie 				 * the relocation.
7985aefb655Srie 				 */
7995aefb655Srie 				gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref,
8005aefb655Srie 				    ofl, arsp);
8015aefb655Srie 				assert(gnp);
8025aefb655Srie 
8035aefb655Srie 				if (arsp->rel_rtype == R_AMD64_DTPOFF64)
8045aefb655Srie 					gotndx = gnp->gn_gotndx + 1;
8055aefb655Srie 				else
8065aefb655Srie 					gotndx = gnp->gn_gotndx;
8075aefb655Srie 
8085aefb655Srie 				R1addr = (Xword)(gotndx * M_GOT_ENTSIZE);
8095aefb655Srie 
8105aefb655Srie 				/*
8115aefb655Srie 				 * Add the GOTs data's offset.
8125aefb655Srie 				 */
8135aefb655Srie 				R2addr = R1addr + (uintptr_t)
8145aefb655Srie 				    arsp->rel_osdesc->os_outdata->d_buf;
8155aefb655Srie 
8165aefb655Srie 				DBG_CALL(Dbg_reloc_doact(ofl->ofl_lml,
8175aefb655Srie 				    ELF_DBG_LD, M_MACH, SHT_RELA,
8185aefb655Srie 				    arsp->rel_rtype, R1addr, value,
8195aefb655Srie 				    arsp->rel_sname, arsp->rel_osdesc));
8205aefb655Srie 
8215aefb655Srie 				/*
8225aefb655Srie 				 * And do it.
8235aefb655Srie 				 */
8245aefb655Srie 				*(Xword *)R2addr = value;
8255aefb655Srie 				continue;
8265aefb655Srie 
8275aefb655Srie 			} else if (IS_GOT_BASED(arsp->rel_rtype) &&
8285aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
8295aefb655Srie 				value -= ofl->ofl_osgot->os_shdr->sh_addr;
8305aefb655Srie 
8315aefb655Srie 			} else if (IS_GOTPCREL(arsp->rel_rtype) &&
8325aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
8335aefb655Srie 				Gotndx *gnp;
8345aefb655Srie 
8355aefb655Srie 				/*
8365aefb655Srie 				 * Calculation:
8375aefb655Srie 				 *	G + GOT + A - P
8385aefb655Srie 				 */
8395aefb655Srie 				gnp = ld_find_gotndx(&(sdp->sd_GOTndxs),
8405aefb655Srie 				    gref, ofl, arsp);
8415aefb655Srie 				assert(gnp);
8425aefb655Srie 				value = (Xword)(ofl->ofl_osgot->os_shdr->
8435aefb655Srie 				    sh_addr) + ((Xword)gnp->gn_gotndx *
8445aefb655Srie 				    M_GOT_ENTSIZE) + arsp->rel_raddend -
8455aefb655Srie 				    refaddr;
8465aefb655Srie 
8475aefb655Srie 			} else if (IS_GOT_PC(arsp->rel_rtype) &&
8485aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
8495aefb655Srie 				value = (Xword)(ofl->ofl_osgot->os_shdr->
8505aefb655Srie 				    sh_addr) - refaddr + arsp->rel_raddend;
8515aefb655Srie 
8525aefb655Srie 			} else if ((IS_PC_RELATIVE(arsp->rel_rtype)) &&
8535aefb655Srie 			    (((flags & FLG_OF_RELOBJ) == 0) ||
8545aefb655Srie 			    (arsp->rel_osdesc == sdp->sd_isc->is_osdesc))) {
8555aefb655Srie 				value -= refaddr;
8565aefb655Srie 
8575aefb655Srie 			} else if (IS_TLS_INS(arsp->rel_rtype) &&
8585aefb655Srie 			    IS_GOT_RELATIVE(arsp->rel_rtype) &&
8595aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
8605aefb655Srie 				Gotndx	*gnp;
8615aefb655Srie 
8625aefb655Srie 				gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref,
8635aefb655Srie 				    ofl, arsp);
8645aefb655Srie 				assert(gnp);
8655aefb655Srie 				value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE;
8665aefb655Srie 
8675aefb655Srie 			} else if (IS_GOT_RELATIVE(arsp->rel_rtype) &&
8685aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
8695aefb655Srie 				Gotndx *gnp;
8705aefb655Srie 
8715aefb655Srie 				gnp = ld_find_gotndx(&(sdp->sd_GOTndxs),
8725aefb655Srie 				    gref, ofl, arsp);
8735aefb655Srie 				assert(gnp);
8745aefb655Srie 				value = (Xword)gnp->gn_gotndx * M_GOT_ENTSIZE;
8755aefb655Srie 
8765aefb655Srie 			} else if ((arsp->rel_flags & FLG_REL_STLS) &&
8775aefb655Srie 			    ((flags & FLG_OF_RELOBJ) == 0)) {
8785aefb655Srie 				Xword	tlsstatsize;
8795aefb655Srie 
8805aefb655Srie 				/*
8815aefb655Srie 				 * This is the LE TLS reference model.  Static
8825aefb655Srie 				 * offset is hard-coded.
8835aefb655Srie 				 */
8845aefb655Srie 				tlsstatsize =
8855aefb655Srie 				    S_ROUND(ofl->ofl_tlsphdr->p_memsz,
8865aefb655Srie 				    M_TLSSTATALIGN);
8875aefb655Srie 				value = tlsstatsize - value;
8885aefb655Srie 
8895aefb655Srie 				/*
8905aefb655Srie 				 * Since this code is fixed up, it assumes a
8915aefb655Srie 				 * negative offset that can be added to the
8925aefb655Srie 				 * thread pointer.
8935aefb655Srie 				 */
8945aefb655Srie 				if (arsp->rel_rtype == R_AMD64_TPOFF32)
8955aefb655Srie 					value = -value;
8965aefb655Srie 			}
8975aefb655Srie 
8985aefb655Srie 			if (arsp->rel_isdesc->is_file)
8995aefb655Srie 				ifl_name = arsp->rel_isdesc->is_file->ifl_name;
9005aefb655Srie 			else
9015aefb655Srie 				ifl_name = MSG_INTL(MSG_STR_NULL);
9025aefb655Srie 
9035aefb655Srie 			/*
9045aefb655Srie 			 * Make sure we have data to relocate.  Compiler and
9055aefb655Srie 			 * assembler developers have been known to generate
9065aefb655Srie 			 * relocations against invalid sections (normally .bss),
9075aefb655Srie 			 * so for their benefit give them sufficient information
9085aefb655Srie 			 * to help analyze the problem.  End users should never
9095aefb655Srie 			 * see this.
9105aefb655Srie 			 */
9115aefb655Srie 			if (arsp->rel_isdesc->is_indata->d_buf == 0) {
9125aefb655Srie 				eprintf(ofl->ofl_lml, ERR_FATAL,
9135aefb655Srie 				    MSG_INTL(MSG_REL_EMPTYSEC),
914c13de8f6Sab196087 				    conv_reloc_amd64_type(arsp->rel_rtype, 0),
9155aefb655Srie 				    ifl_name, demangle(arsp->rel_sname),
9165aefb655Srie 				    arsp->rel_isdesc->is_name);
9175aefb655Srie 				return (S_ERROR);
9185aefb655Srie 			}
9195aefb655Srie 
9205aefb655Srie 			/*
9215aefb655Srie 			 * Get the address of the data item we need to modify.
9225aefb655Srie 			 */
9235aefb655Srie 			addr = (uchar_t *)((uintptr_t)arsp->rel_roffset +
9245aefb655Srie 			    (uintptr_t)_elf_getxoff(arsp->rel_isdesc->
9255aefb655Srie 			    is_indata));
9265aefb655Srie 
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));
9305aefb655Srie 			addr += (uintptr_t)arsp->rel_osdesc->os_outdata->d_buf;
9315aefb655Srie 
9325aefb655Srie 			if ((((uintptr_t)addr - (uintptr_t)ofl->ofl_nehdr) >
9335aefb655Srie 			    ofl->ofl_size) || (arsp->rel_roffset >
9345aefb655Srie 			    arsp->rel_osdesc->os_shdr->sh_size)) {
9355aefb655Srie 				int	class;
9365aefb655Srie 
9375aefb655Srie 				if (((uintptr_t)addr -
9385aefb655Srie 				    (uintptr_t)ofl->ofl_nehdr) > ofl->ofl_size)
9395aefb655Srie 					class = ERR_FATAL;
9405aefb655Srie 				else
9415aefb655Srie 					class = ERR_WARNING;
9425aefb655Srie 
9435aefb655Srie 				eprintf(ofl->ofl_lml, class,
9445aefb655Srie 				    MSG_INTL(MSG_REL_INVALOFFSET),
945c13de8f6Sab196087 				    conv_reloc_amd64_type(arsp->rel_rtype, 0),
9465aefb655Srie 				    ifl_name, arsp->rel_isdesc->is_name,
9475aefb655Srie 				    demangle(arsp->rel_sname),
9485aefb655Srie 				    EC_ADDR((uintptr_t)addr -
9495aefb655Srie 				    (uintptr_t)ofl->ofl_nehdr));
9505aefb655Srie 
9515aefb655Srie 				if (class == ERR_FATAL) {
9525aefb655Srie 					return_code = S_ERROR;
9535aefb655Srie 					continue;
9545aefb655Srie 				}
9555aefb655Srie 			}
9565aefb655Srie 
9575aefb655Srie 			/*
9585aefb655Srie 			 * The relocation is additive.  Ignore the previous
9595aefb655Srie 			 * symbol value if this local partial symbol is
9605aefb655Srie 			 * expanded.
9615aefb655Srie 			 */
9625aefb655Srie 			if (moved)
9635aefb655Srie 				value -= *addr;
9645aefb655Srie 
9655aefb655Srie 			/*
9665aefb655Srie 			 * If '-z noreloc' is specified - skip the do_reloc
9675aefb655Srie 			 * stage.
9685aefb655Srie 			 */
9695aefb655Srie 			if ((flags & FLG_OF_RELOBJ) ||
9705aefb655Srie 			    !(dtflags1 & DF_1_NORELOC)) {
9715aefb655Srie 				if (do_reloc((uchar_t)arsp->rel_rtype,
9725aefb655Srie 				    addr, &value, arsp->rel_sname, ifl_name,
9735aefb655Srie 				    ofl->ofl_lml) == 0)
9745aefb655Srie 					return_code = S_ERROR;
9755aefb655Srie 			}
9765aefb655Srie 		}
9775aefb655Srie 	}
9785aefb655Srie 	return (return_code);
9795aefb655Srie }
9805aefb655Srie 
9815aefb655Srie uintptr_t
9825aefb655Srie ld_add_outrel(Word flags, Rel_desc *rsp, Ofl_desc *ofl)
9835aefb655Srie {
9845aefb655Srie 	Rel_desc	*orsp;
9855aefb655Srie 	Rel_cache	*rcp;
9865aefb655Srie 	Sym_desc	*sdp = rsp->rel_sym;
9875aefb655Srie 
9885aefb655Srie 	/*
9895aefb655Srie 	 * Static executables *do not* want any relocations against them.
9905aefb655Srie 	 * Since our engine still creates relocations against a WEAK UNDEFINED
9915aefb655Srie 	 * symbol in a static executable, it's best to disable them here
9925aefb655Srie 	 * instead of through out the relocation code.
9935aefb655Srie 	 */
9945aefb655Srie 	if ((ofl->ofl_flags & (FLG_OF_STATIC | FLG_OF_EXEC)) ==
9955aefb655Srie 	    (FLG_OF_STATIC | FLG_OF_EXEC))
9965aefb655Srie 		return (1);
9975aefb655Srie 
9985aefb655Srie 	/*
9995aefb655Srie 	 * If no relocation cache structures are available allocate
10005aefb655Srie 	 * a new one and link it into the cache list.
10015aefb655Srie 	 */
10025aefb655Srie 	if ((ofl->ofl_outrels.tail == 0) ||
10035aefb655Srie 	    ((rcp = (Rel_cache *)ofl->ofl_outrels.tail->data) == 0) ||
10045aefb655Srie 	    ((orsp = rcp->rc_free) == rcp->rc_end)) {
10055aefb655Srie 		static size_t	nextsize = 0;
10065aefb655Srie 		size_t		size;
10075aefb655Srie 
10085aefb655Srie 		/*
10095aefb655Srie 		 * Output relocation numbers can vary considerably between
10105aefb655Srie 		 * building executables or shared objects (pic vs. non-pic),
10115aefb655Srie 		 * etc.  But, they typically aren't very large, so for these
10125aefb655Srie 		 * objects use a standard bucket size.  For building relocatable
10135aefb655Srie 		 * objects, typically there will be an output relocation for
10145aefb655Srie 		 * every input relocation.
10155aefb655Srie 		 */
10165aefb655Srie 		if (nextsize == 0) {
10175aefb655Srie 			if (ofl->ofl_flags & FLG_OF_RELOBJ) {
10185aefb655Srie 				if ((size = ofl->ofl_relocincnt) == 0)
10195aefb655Srie 					size = REL_LOIDESCNO;
10205aefb655Srie 				if (size > REL_HOIDESCNO)
10215aefb655Srie 					nextsize = REL_HOIDESCNO;
10225aefb655Srie 				else
10235aefb655Srie 					nextsize = REL_LOIDESCNO;
10245aefb655Srie 			} else
10255aefb655Srie 				nextsize = size = REL_HOIDESCNO;
10265aefb655Srie 		} else
10275aefb655Srie 			size = nextsize;
10285aefb655Srie 
10295aefb655Srie 		size = size * sizeof (Rel_desc);
10305aefb655Srie 
10315aefb655Srie 		if (((rcp = libld_malloc(sizeof (Rel_cache) + size)) == 0) ||
10325aefb655Srie 		    (list_appendc(&ofl->ofl_outrels, rcp) == 0))
10335aefb655Srie 			return (S_ERROR);
10345aefb655Srie 
10355aefb655Srie 		/* LINTED */
10365aefb655Srie 		rcp->rc_free = orsp = (Rel_desc *)(rcp + 1);
10375aefb655Srie 		/* LINTED */
10385aefb655Srie 		rcp->rc_end = (Rel_desc *)((char *)rcp->rc_free + size);
10395aefb655Srie 	}
10405aefb655Srie 
10415aefb655Srie 	/*
10425aefb655Srie 	 * If we are adding a output relocation against a section
10435aefb655Srie 	 * symbol (non-RELATIVE) then mark that section.  These sections
10445aefb655Srie 	 * will be added to the .dynsym symbol table.
10455aefb655Srie 	 */
10465aefb655Srie 	if (sdp && (rsp->rel_rtype != M_R_RELATIVE) &&
10475aefb655Srie 	    ((flags & FLG_REL_SCNNDX) ||
10485aefb655Srie 	    (ELF_ST_TYPE(sdp->sd_sym->st_info) == STT_SECTION))) {
10495aefb655Srie 
10505aefb655Srie 		/*
10515aefb655Srie 		 * If this is a COMMON symbol - no output section
10525aefb655Srie 		 * exists yet - (it's created as part of sym_validate()).
10535aefb655Srie 		 * So - we mark here that when it's created it should
10545aefb655Srie 		 * be tagged with the FLG_OS_OUTREL flag.
10555aefb655Srie 		 */
10565aefb655Srie 		if ((sdp->sd_flags & FLG_SY_SPECSEC) &&
10570bc07c75Srie 		    (sdp->sd_sym->st_shndx == SHN_COMMON)) {
10585aefb655Srie 			if (ELF_ST_TYPE(sdp->sd_sym->st_info) != STT_TLS)
10595aefb655Srie 				ofl->ofl_flags1 |= FLG_OF1_BSSOREL;
10605aefb655Srie 			else
10615aefb655Srie 				ofl->ofl_flags1 |= FLG_OF1_TLSOREL;
10625aefb655Srie 		} else {
10635aefb655Srie 			Os_desc	*osp = sdp->sd_isc->is_osdesc;
10645aefb655Srie 
10655aefb655Srie 			if ((osp->os_flags & FLG_OS_OUTREL) == 0) {
10665aefb655Srie 				ofl->ofl_dynshdrcnt++;
10675aefb655Srie 				osp->os_flags |= FLG_OS_OUTREL;
10685aefb655Srie 			}
10695aefb655Srie 		}
10705aefb655Srie 	}
10715aefb655Srie 
10725aefb655Srie 	*orsp = *rsp;
10735aefb655Srie 	orsp->rel_flags |= flags;
10745aefb655Srie 
10755aefb655Srie 	rcp->rc_free++;
10765aefb655Srie 	ofl->ofl_outrelscnt++;
10775aefb655Srie 
10785aefb655Srie 	if (flags & FLG_REL_GOT)
10795aefb655Srie 		ofl->ofl_relocgotsz += (Xword)sizeof (Rela);
10805aefb655Srie 	else if (flags & FLG_REL_PLT)
10815aefb655Srie 		ofl->ofl_relocpltsz += (Xword)sizeof (Rela);
10825aefb655Srie 	else if (flags & FLG_REL_BSS)
10835aefb655Srie 		ofl->ofl_relocbsssz += (Xword)sizeof (Rela);
10845aefb655Srie 	else if (flags & FLG_REL_NOINFO)
10855aefb655Srie 		ofl->ofl_relocrelsz += (Xword)sizeof (Rela);
10865aefb655Srie 	else
10875aefb655Srie 		orsp->rel_osdesc->os_szoutrels += (Xword)sizeof (Rela);
10885aefb655Srie 
10895aefb655Srie 	if (orsp->rel_rtype == M_R_RELATIVE)
10905aefb655Srie 		ofl->ofl_relocrelcnt++;
10915aefb655Srie 
10925aefb655Srie 	/*
10935aefb655Srie 	 * We don't perform sorting on PLT relocations because
10945aefb655Srie 	 * they have already been assigned a PLT index and if we
10955aefb655Srie 	 * were to sort them we would have to re-assign the plt indexes.
10965aefb655Srie 	 */
10975aefb655Srie 	if (!(flags & FLG_REL_PLT))
10985aefb655Srie 		ofl->ofl_reloccnt++;
10995aefb655Srie 
11005aefb655Srie 	/*
11015aefb655Srie 	 * Insure a GLOBAL_OFFSET_TABLE is generated if required.
11025aefb655Srie 	 */
11035aefb655Srie 	if (IS_GOT_REQUIRED(orsp->rel_rtype))
11045aefb655Srie 		ofl->ofl_flags |= FLG_OF_BLDGOT;
11055aefb655Srie 
11065aefb655Srie 	/*
11075aefb655Srie 	 * Identify and possibly warn of a displacement relocation.
11085aefb655Srie 	 */
11095aefb655Srie 	if (orsp->rel_flags & FLG_REL_DISP) {
11105aefb655Srie 		ofl->ofl_dtflags_1 |= DF_1_DISPRELPND;
11115aefb655Srie 
11125aefb655Srie 		if (ofl->ofl_flags & FLG_OF_VERBOSE)
11135aefb655Srie 			ld_disp_errmsg(MSG_INTL(MSG_REL_DISPREL4), orsp, ofl);
11145aefb655Srie 	}
11155aefb655Srie 	DBG_CALL(Dbg_reloc_ors_entry(ofl->ofl_lml, ELF_DBG_LD, SHT_RELA,
11165aefb655Srie 	    M_MACH, orsp));
11175aefb655Srie 	return (1);
11185aefb655Srie }
11195aefb655Srie 
11205aefb655Srie /*
11215aefb655Srie  * Stub routine since register symbols are not supported on amd64.
11225aefb655Srie  */
11235aefb655Srie /* ARGSUSED */
11245aefb655Srie uintptr_t
11255aefb655Srie ld_reloc_register(Rel_desc * rsp, Is_desc * isp, Ofl_desc * ofl)
11265aefb655Srie {
11275aefb655Srie 	eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_REL_NOREG));
11285aefb655Srie 	return (S_ERROR);
11295aefb655Srie }
11305aefb655Srie 
11315aefb655Srie /*
11325aefb655Srie  * process relocation for a LOCAL symbol
11335aefb655Srie  */
11345aefb655Srie uintptr_t
11355aefb655Srie ld_reloc_local(Rel_desc * rsp, Ofl_desc * ofl)
11365aefb655Srie {
11375aefb655Srie 	Word		flags = ofl->ofl_flags;
11385aefb655Srie 	Sym_desc	*sdp = rsp->rel_sym;
11390bc07c75Srie 	Word		shndx = sdp->sd_sym->st_shndx;
11405aefb655Srie 	Word		ortype = rsp->rel_rtype;
11415aefb655Srie 
11425aefb655Srie 	/*
11435aefb655Srie 	 * if ((shared object) and (not pc relative relocation) and
11445aefb655Srie 	 *    (not against ABS symbol))
11455aefb655Srie 	 * then
11465aefb655Srie 	 *	build R_AMD64_RELATIVE
11475aefb655Srie 	 * fi
11485aefb655Srie 	 */
11495aefb655Srie 	if ((flags & FLG_OF_SHAROBJ) && (rsp->rel_flags & FLG_REL_LOAD) &&
11505aefb655Srie 	    !(IS_PC_RELATIVE(rsp->rel_rtype)) &&
11515aefb655Srie 	    !(IS_GOT_BASED(rsp->rel_rtype)) &&
11525aefb655Srie 	    !(rsp->rel_isdesc != NULL &&
11535aefb655Srie 	    (rsp->rel_isdesc->is_shdr->sh_type == SHT_SUNW_dof)) &&
11545aefb655Srie 	    (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) ||
11555aefb655Srie 	    (shndx != SHN_ABS) || (sdp->sd_aux && sdp->sd_aux->sa_symspec))) {
11565aefb655Srie 
11575aefb655Srie 		/*
11585aefb655Srie 		 * R_AMD64_RELATIVE updates a 64bit address, if this
11595aefb655Srie 		 * relocation isn't a 64bit binding then we can not
11605aefb655Srie 		 * simplify it to a RELATIVE relocation.
11615aefb655Srie 		 */
11625aefb655Srie 		if (reloc_table[ortype].re_fsize != sizeof (Addr)) {
11635aefb655Srie 			return (ld_add_outrel(NULL, rsp, ofl));
11645aefb655Srie 		}
11655aefb655Srie 
11665aefb655Srie 		rsp->rel_rtype = R_AMD64_RELATIVE;
11675aefb655Srie 		if (ld_add_outrel(FLG_REL_ADVAL, rsp, ofl) == S_ERROR)
11685aefb655Srie 			return (S_ERROR);
11695aefb655Srie 		rsp->rel_rtype = ortype;
11705aefb655Srie 		return (1);
11715aefb655Srie 	}
11725aefb655Srie 
11735aefb655Srie 	/*
11745aefb655Srie 	 * If the relocation is against a 'non-allocatable' section
11755aefb655Srie 	 * and we can not resolve it now - then give a warning
11765aefb655Srie 	 * message.
11775aefb655Srie 	 *
11785aefb655Srie 	 * We can not resolve the symbol if either:
11795aefb655Srie 	 *	a) it's undefined
11805aefb655Srie 	 *	b) it's defined in a shared library and a
11815aefb655Srie 	 *	   COPY relocation hasn't moved it to the executable
11825aefb655Srie 	 *
11835aefb655Srie 	 * Note: because we process all of the relocations against the
11845aefb655Srie 	 *	text segment before any others - we know whether
11855aefb655Srie 	 *	or not a copy relocation will be generated before
11865aefb655Srie 	 *	we get here (see reloc_init()->reloc_segments()).
11875aefb655Srie 	 */
11885aefb655Srie 	if (!(rsp->rel_flags & FLG_REL_LOAD) &&
11895aefb655Srie 	    ((shndx == SHN_UNDEF) ||
11905aefb655Srie 	    ((sdp->sd_ref == REF_DYN_NEED) &&
11915aefb655Srie 	    ((sdp->sd_flags & FLG_SY_MVTOCOMM) == 0)))) {
11925aefb655Srie 		/*
11935aefb655Srie 		 * If the relocation is against a SHT_SUNW_ANNOTATE
11945aefb655Srie 		 * section - then silently ignore that the relocation
11955aefb655Srie 		 * can not be resolved.
11965aefb655Srie 		 */
11975aefb655Srie 		if (rsp->rel_osdesc &&
11985aefb655Srie 		    (rsp->rel_osdesc->os_shdr->sh_type == SHT_SUNW_ANNOTATE))
11995aefb655Srie 			return (0);
12005aefb655Srie 		(void) eprintf(ofl->ofl_lml, ERR_WARNING,
12015aefb655Srie 		    MSG_INTL(MSG_REL_EXTERNSYM),
1202c13de8f6Sab196087 		    conv_reloc_amd64_type(rsp->rel_rtype, 0),
12035aefb655Srie 		    rsp->rel_isdesc->is_file->ifl_name,
12045aefb655Srie 		    demangle(rsp->rel_sname), rsp->rel_osdesc->os_name);
12055aefb655Srie 		return (1);
12065aefb655Srie 	}
12075aefb655Srie 
12085aefb655Srie 	/*
12095aefb655Srie 	 * Perform relocation.
12105aefb655Srie 	 */
12115aefb655Srie 	return (ld_add_actrel(NULL, rsp, ofl));
12125aefb655Srie }
12135aefb655Srie 
12145aefb655Srie 
12155aefb655Srie uintptr_t
12165aefb655Srie /* ARGSUSED */
12175aefb655Srie ld_reloc_GOTOP(Boolean local, Rel_desc * rsp, Ofl_desc * ofl)
12185aefb655Srie {
12195aefb655Srie 	/*
12205aefb655Srie 	 * Stub routine for common code compatibility, we shouldn't
12215aefb655Srie 	 * actually get here on amd64.
12225aefb655Srie 	 */
1223*d326b23bSrie 	assert(0);
12245aefb655Srie 	return (S_ERROR);
12255aefb655Srie }
12265aefb655Srie 
12275aefb655Srie uintptr_t
12285aefb655Srie ld_reloc_TLS(Boolean local, Rel_desc * rsp, Ofl_desc * ofl)
12295aefb655Srie {
12305aefb655Srie 	Word		rtype = rsp->rel_rtype;
12315aefb655Srie 	Sym_desc	*sdp = rsp->rel_sym;
12325aefb655Srie 	Word		flags = ofl->ofl_flags;
12335aefb655Srie 	Gotndx		*gnp;
12345aefb655Srie 
12355aefb655Srie 	/*
1236*d326b23bSrie 	 * If we're building an executable - use either the IE or LE access
1237*d326b23bSrie 	 * model.  If we're building a shared object process any IE model.
12385aefb655Srie 	 */
1239*d326b23bSrie 	if ((flags & FLG_OF_EXEC) || (IS_TLS_IE(rtype))) {
12405aefb655Srie 		/*
1241*d326b23bSrie 		 * Set the DF_STATIC_TLS flag.
12425aefb655Srie 		 */
12435aefb655Srie 		ofl->ofl_dtflags |= DF_STATIC_TLS;
12445aefb655Srie 
1245*d326b23bSrie 		if (!local || ((flags & FLG_OF_EXEC) == 0)) {
12465aefb655Srie 			/*
1247*d326b23bSrie 			 * Assign a GOT entry for static TLS references.
12485aefb655Srie 			 */
12495aefb655Srie 			if ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs),
1250*d326b23bSrie 			    GOT_REF_TLSIE, ofl, rsp)) == 0) {
1251*d326b23bSrie 
1252*d326b23bSrie 				if (ld_assign_got_TLS(local, rsp, ofl, sdp,
1253*d326b23bSrie 				    gnp, GOT_REF_TLSIE, FLG_REL_STLS,
1254*d326b23bSrie 				    rtype, R_AMD64_TPOFF64, 0) == S_ERROR)
12555aefb655Srie 					return (S_ERROR);
12565aefb655Srie 			}
1257*d326b23bSrie 
1258*d326b23bSrie 			/*
1259*d326b23bSrie 			 * IE access model.
1260*d326b23bSrie 			 */
12615aefb655Srie 			if (IS_TLS_IE(rtype))
12625aefb655Srie 				return (ld_add_actrel(FLG_REL_STLS, rsp, ofl));
12635aefb655Srie 
12645aefb655Srie 			/*
1265*d326b23bSrie 			 * Fixups are required for other executable models.
12665aefb655Srie 			 */
12675aefb655Srie 			return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS),
12685aefb655Srie 			    rsp, ofl));
12695aefb655Srie 		}
1270*d326b23bSrie 
12715aefb655Srie 		/*
1272*d326b23bSrie 		 * LE access model.
12735aefb655Srie 		 */
12745aefb655Srie 		if (IS_TLS_LE(rtype))
12755aefb655Srie 			return (ld_add_actrel(FLG_REL_STLS, rsp, ofl));
1276*d326b23bSrie 
12775aefb655Srie 		return (ld_add_actrel((FLG_REL_TLSFIX | FLG_REL_STLS),
12785aefb655Srie 		    rsp, ofl));
12795aefb655Srie 	}
12805aefb655Srie 
12815aefb655Srie 	/*
1282*d326b23bSrie 	 * Building a shared object.
1283*d326b23bSrie 	 *
1284*d326b23bSrie 	 * Assign a GOT entry for a dynamic TLS reference.
12855aefb655Srie 	 */
12865aefb655Srie 	if (IS_TLS_LD(rtype) && ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs),
12875aefb655Srie 	    GOT_REF_TLSLD, ofl, rsp)) == 0)) {
1288*d326b23bSrie 
1289*d326b23bSrie 		if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSLD,
1290*d326b23bSrie 		    FLG_REL_MTLS, rtype, R_AMD64_DTPMOD64, 0) == S_ERROR)
12915aefb655Srie 			return (S_ERROR);
1292*d326b23bSrie 
12935aefb655Srie 	} else if (IS_TLS_GD(rtype) &&
1294*d326b23bSrie 	    ((gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), GOT_REF_TLSGD,
1295*d326b23bSrie 	    ofl, rsp)) == 0)) {
1296*d326b23bSrie 
1297*d326b23bSrie 		if (ld_assign_got_TLS(local, rsp, ofl, sdp, gnp, GOT_REF_TLSGD,
1298*d326b23bSrie 		    FLG_REL_DTLS, rtype, R_AMD64_DTPMOD64,
1299*d326b23bSrie 		    R_AMD64_DTPOFF64) == S_ERROR)
13005aefb655Srie 			return (S_ERROR);
13015aefb655Srie 	}
13025aefb655Srie 
13035aefb655Srie 	if (IS_TLS_LD(rtype))
13045aefb655Srie 		return (ld_add_actrel(FLG_REL_MTLS, rsp, ofl));
13055aefb655Srie 
13065aefb655Srie 	return (ld_add_actrel(FLG_REL_DTLS, rsp, ofl));
13075aefb655Srie }
13085aefb655Srie 
13095aefb655Srie /* ARGSUSED3 */
13105aefb655Srie Gotndx *
13115aefb655Srie ld_find_gotndx(List * lst, Gotref gref, Ofl_desc * ofl, Rel_desc * rdesc)
13125aefb655Srie {
13135aefb655Srie 	Listnode *	lnp;
13145aefb655Srie 	Gotndx *	gnp;
13155aefb655Srie 
13165aefb655Srie 	assert(rdesc != 0);
13175aefb655Srie 
13185aefb655Srie 	if ((gref == GOT_REF_TLSLD) && ofl->ofl_tlsldgotndx)
13195aefb655Srie 		return (ofl->ofl_tlsldgotndx);
13205aefb655Srie 
13215aefb655Srie 	for (LIST_TRAVERSE(lst, lnp, gnp)) {
13225aefb655Srie 		if ((rdesc->rel_raddend == gnp->gn_addend) &&
13235aefb655Srie 		    (gnp->gn_gotref == gref)) {
13245aefb655Srie 			return (gnp);
13255aefb655Srie 		}
13265aefb655Srie 	}
13275aefb655Srie 	return ((Gotndx *)0);
13285aefb655Srie }
13295aefb655Srie 
13305aefb655Srie Xword
13315aefb655Srie ld_calc_got_offset(Rel_desc * rdesc, Ofl_desc * ofl)
13325aefb655Srie {
13335aefb655Srie 	Os_desc		*osp = ofl->ofl_osgot;
13345aefb655Srie 	Sym_desc	*sdp = rdesc->rel_sym;
13355aefb655Srie 	Xword		gotndx;
13365aefb655Srie 	Gotref		gref;
13375aefb655Srie 	Gotndx		*gnp;
13385aefb655Srie 
13395aefb655Srie 	if (rdesc->rel_flags & FLG_REL_DTLS)
13405aefb655Srie 		gref = GOT_REF_TLSGD;
13415aefb655Srie 	else if (rdesc->rel_flags & FLG_REL_MTLS)
13425aefb655Srie 		gref = GOT_REF_TLSLD;
13435aefb655Srie 	else if (rdesc->rel_flags & FLG_REL_STLS)
13445aefb655Srie 		gref = GOT_REF_TLSIE;
13455aefb655Srie 	else
13465aefb655Srie 		gref = GOT_REF_GENERIC;
13475aefb655Srie 
13485aefb655Srie 	gnp = ld_find_gotndx(&(sdp->sd_GOTndxs), gref, ofl, rdesc);
13495aefb655Srie 	assert(gnp);
13505aefb655Srie 
13515aefb655Srie 	gotndx = (Xword)gnp->gn_gotndx;
13525aefb655Srie 
13535aefb655Srie 	if ((rdesc->rel_flags & FLG_REL_DTLS) &&
13545aefb655Srie 	    (rdesc->rel_rtype == R_AMD64_DTPOFF64))
13555aefb655Srie 		gotndx++;
13565aefb655Srie 
13575aefb655Srie 	return ((Xword)(osp->os_shdr->sh_addr + (gotndx * M_GOT_ENTSIZE)));
13585aefb655Srie }
13595aefb655Srie 
13605aefb655Srie 
13615aefb655Srie /* ARGSUSED5 */
13625aefb655Srie uintptr_t
1363*d326b23bSrie ld_assign_got_ndx(List * lst, Gotndx * pgnp, Gotref gref, Ofl_desc * ofl,
13645aefb655Srie     Rel_desc * rsp, Sym_desc * sdp)
13655aefb655Srie {
13665aefb655Srie 	Xword		raddend;
13675aefb655Srie 	Gotndx		*gnp, *_gnp;
13685aefb655Srie 	Listnode	*lnp, *plnp;
13695aefb655Srie 	uint_t		gotents;
13705aefb655Srie 
13715aefb655Srie 	raddend = rsp->rel_raddend;
13725aefb655Srie 	if (pgnp && (pgnp->gn_addend == raddend) &&
13735aefb655Srie 	    (pgnp->gn_gotref == gref))
13745aefb655Srie 		return (1);
13755aefb655Srie 
13765aefb655Srie 	if ((gref == GOT_REF_TLSGD) || (gref == GOT_REF_TLSLD))
13775aefb655Srie 		gotents = 2;
13785aefb655Srie 	else
13795aefb655Srie 		gotents = 1;
13805aefb655Srie 
13815aefb655Srie 	plnp = 0;
13825aefb655Srie 	for (LIST_TRAVERSE(lst, lnp, _gnp)) {
13835aefb655Srie 		if (_gnp->gn_addend > raddend)
13845aefb655Srie 			break;
13855aefb655Srie 		plnp = lnp;
13865aefb655Srie 	}
13875aefb655Srie 
13885aefb655Srie 	/*
13895aefb655Srie 	 * Allocate a new entry.
13905aefb655Srie 	 */
13915aefb655Srie 	if ((gnp = libld_calloc(sizeof (Gotndx), 1)) == 0)
13925aefb655Srie 		return (S_ERROR);
13935aefb655Srie 	gnp->gn_addend = raddend;
13945aefb655Srie 	gnp->gn_gotndx = ofl->ofl_gotcnt;
13955aefb655Srie 	gnp->gn_gotref = gref;
13965aefb655Srie 
13975aefb655Srie 	ofl->ofl_gotcnt += gotents;
13985aefb655Srie 
13995aefb655Srie 	if (gref == GOT_REF_TLSLD) {
14005aefb655Srie 		ofl->ofl_tlsldgotndx = gnp;
14015aefb655Srie 		return (1);
14025aefb655Srie 	}
14035aefb655Srie 
14045aefb655Srie 	if (plnp == 0) {
14055aefb655Srie 		/*
14065aefb655Srie 		 * Insert at head of list
14075aefb655Srie 		 */
14085aefb655Srie 		if (list_prependc(lst, (void *)gnp) == 0)
14095aefb655Srie 			return (S_ERROR);
14105aefb655Srie 	} else if (_gnp->gn_addend > raddend) {
14115aefb655Srie 		/*
14125aefb655Srie 		 * Insert in middle of lest
14135aefb655Srie 		 */
14145aefb655Srie 		if (list_insertc(lst, (void *)gnp, plnp) == 0)
14155aefb655Srie 			return (S_ERROR);
14165aefb655Srie 	} else {
14175aefb655Srie 		/*
14185aefb655Srie 		 * Append to tail of list
14195aefb655Srie 		 */
14205aefb655Srie 		if (list_appendc(lst, (void *)gnp) == 0)
14215aefb655Srie 			return (S_ERROR);
14225aefb655Srie 	}
14235aefb655Srie 	return (1);
14245aefb655Srie }
14255aefb655Srie 
14265aefb655Srie void
14275aefb655Srie ld_assign_plt_ndx(Sym_desc * sdp, Ofl_desc *ofl)
14285aefb655Srie {
14295aefb655Srie 	sdp->sd_aux->sa_PLTndx = 1 + ofl->ofl_pltcnt++;
14305aefb655Srie 	sdp->sd_aux->sa_PLTGOTndx = ofl->ofl_gotcnt++;
14315aefb655Srie 	ofl->ofl_flags |= FLG_OF_BLDGOT;
14325aefb655Srie }
14335aefb655Srie 
14345aefb655Srie static uchar_t plt0_template[M_PLT_ENTSIZE] = {
14355aefb655Srie /* 0x00 PUSHQ GOT+8(%rip) */	0xff, 0x35, 0x00, 0x00, 0x00, 0x00,
14365aefb655Srie /* 0x06 JMP   *GOT+16(%rip) */	0xff, 0x25, 0x00, 0x00, 0x00, 0x00,
14375aefb655Srie /* 0x0c NOP */			0x90,
14385aefb655Srie /* 0x0d NOP */			0x90,
14395aefb655Srie /* 0x0e NOP */			0x90,
14405aefb655Srie /* 0x0f NOP */			0x90
14415aefb655Srie };
14425aefb655Srie 
14435aefb655Srie /*
14445aefb655Srie  * Initializes .got[0] with the _DYNAMIC symbol value.
14455aefb655Srie  */
14465aefb655Srie uintptr_t
14475aefb655Srie ld_fillin_gotplt(Ofl_desc *ofl)
14485aefb655Srie {
14495aefb655Srie 	Word	flags = ofl->ofl_flags;
14505aefb655Srie 	Word	dtflags1 = ofl->ofl_dtflags_1;
14515aefb655Srie 
14525aefb655Srie 	if (ofl->ofl_osgot) {
14535aefb655Srie 		Sym_desc	*sdp;
14545aefb655Srie 
14555aefb655Srie 		if ((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_DYNAMIC_U),
14565aefb655Srie 		    SYM_NOHASH, 0, ofl)) != NULL) {
1457*d326b23bSrie 			uchar_t	*genptr;
1458*d326b23bSrie 
1459*d326b23bSrie 			genptr = ((uchar_t *)ofl->ofl_osgot->os_outdata->d_buf +
14605aefb655Srie 			    (M_GOT_XDYNAMIC * M_GOT_ENTSIZE));
14615aefb655Srie 			/* LINTED */
14625aefb655Srie 			*(Xword *)genptr = sdp->sd_sym->st_value;
14635aefb655Srie 		}
14645aefb655Srie 	}
14655aefb655Srie 
14665aefb655Srie 	/*
14675aefb655Srie 	 * Fill in the reserved slot in the procedure linkage table the first
14685aefb655Srie 	 * entry is:
14695aefb655Srie 	 *	0x00 PUSHQ	GOT+8(%rip)	    # GOT[1]
14705aefb655Srie 	 *	0x06 JMP	*GOT+16(%rip)	    # GOT[2]
14715aefb655Srie 	 *	0x0c NOP
14725aefb655Srie 	 *	0x0d NOP
14735aefb655Srie 	 *	0x0e NOP
14745aefb655Srie 	 *	0x0f NOP
14755aefb655Srie 	 */
14765aefb655Srie 	if ((flags & FLG_OF_DYNAMIC) && ofl->ofl_osplt) {
14775aefb655Srie 		uchar_t	*pltent;
14785aefb655Srie 		Xword	val1;
14795aefb655Srie 
14805aefb655Srie 		pltent = (uchar_t *)ofl->ofl_osplt->os_outdata->d_buf;
14815aefb655Srie 		bcopy(plt0_template, pltent, sizeof (plt0_template));
14825aefb655Srie 
14835aefb655Srie 		/*
14845aefb655Srie 		 * filin:
14855aefb655Srie 		 *	PUSHQ GOT + 8(%rip)
14865aefb655Srie 		 *
14875aefb655Srie 		 * Note: 0x06 below represents the offset to the
14885aefb655Srie 		 *	 next instruction - which is what %rip will
14895aefb655Srie 		 *	 be pointing at.
14905aefb655Srie 		 */
14915aefb655Srie 		val1 = (ofl->ofl_osgot->os_shdr->sh_addr) +
14925aefb655Srie 			(M_GOT_XLINKMAP * M_GOT_ENTSIZE) -
14935aefb655Srie 			ofl->ofl_osplt->os_shdr->sh_addr - 0x06;
14945aefb655Srie 
14955aefb655Srie 		/*
14965aefb655Srie 		 * If '-z noreloc' is specified - skip the do_reloc
14975aefb655Srie 		 * stage.
14985aefb655Srie 		 */
14995aefb655Srie 		if ((flags & FLG_OF_RELOBJ) ||
15005aefb655Srie 		    !(dtflags1 & DF_1_NORELOC)) {
15015aefb655Srie 			if (do_reloc(R_AMD64_GOTPCREL, &pltent[0x02],
15025aefb655Srie 			    &val1, MSG_ORIG(MSG_SYM_PLTENT),
15035aefb655Srie 			    MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) {
15045aefb655Srie 				eprintf(ofl->ofl_lml, ERR_FATAL,
15055aefb655Srie 				    MSG_INTL(MSG_PLT_PLT0FAIL));
15065aefb655Srie 				return (S_ERROR);
15075aefb655Srie 			}
15085aefb655Srie 		}
15095aefb655Srie 
15105aefb655Srie 		/*
15115aefb655Srie 		 * filin:
15125aefb655Srie 		 *  JMP	*GOT+16(%rip)
15135aefb655Srie 		 */
15145aefb655Srie 		val1 = (ofl->ofl_osgot->os_shdr->sh_addr) +
15155aefb655Srie 			(M_GOT_XRTLD * M_GOT_ENTSIZE) -
15165aefb655Srie 			ofl->ofl_osplt->os_shdr->sh_addr - 0x0c;
15175aefb655Srie 		/*
15185aefb655Srie 		 * If '-z noreloc' is specified - skip the do_reloc
15195aefb655Srie 		 * stage.
15205aefb655Srie 		 */
15215aefb655Srie 		if ((flags & FLG_OF_RELOBJ) ||
15225aefb655Srie 		    !(dtflags1 & DF_1_NORELOC)) {
15235aefb655Srie 			if (do_reloc(R_AMD64_GOTPCREL, &pltent[0x08],
15245aefb655Srie 			    &val1, MSG_ORIG(MSG_SYM_PLTENT),
15255aefb655Srie 			    MSG_ORIG(MSG_SPECFIL_PLTENT), ofl->ofl_lml) == 0) {
15265aefb655Srie 				eprintf(ofl->ofl_lml, ERR_FATAL,
15275aefb655Srie 				    MSG_INTL(MSG_PLT_PLT0FAIL));
15285aefb655Srie 				return (S_ERROR);
15295aefb655Srie 			}
15305aefb655Srie 		}
15315aefb655Srie 	}
15325aefb655Srie 	return (1);
15335aefb655Srie }
1534