/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _RELOC_DOT_H #define _RELOC_DOT_H #pragma ident "%Z%%M% %I% %E% SMI" #if defined(_KERNEL) #include #include #include #include #else #include #include #include #endif /* _KERNEL */ #include #ifdef __cplusplus extern "C" { #endif /* * Global include file for relocation common code. * * Flags for reloc_entry->re_flags */ #define FLG_RE_NOTREL 0x00000000 #define FLG_RE_GOTADD 0x00000001 /* create a GOT entry */ #define FLG_RE_GOTREL 0x00000002 /* GOT based */ #define FLG_RE_GOTPC 0x00000004 /* GOT - P */ #define FLG_RE_GOTOPINS 0x00000008 /* GOTOP instruction */ #define FLG_RE_PCREL 0x00000010 #define FLG_RE_PLTREL 0x00000020 #define FLG_RE_VERIFY 0x00000040 /* verify value fits */ #define FLG_RE_UNALIGN 0x00000080 /* offset is not aligned */ #define FLG_RE_WDISP16 0x00000100 /* funky sparc DISP16 rel */ #define FLG_RE_SIGN 0x00000200 /* value is signed */ #define FLG_RE_ADDRELATIVE 0x00000400 /* RELATIVE relocation */ /* required for non- */ /* fixed objects */ #define FLG_RE_EXTOFFSET 0x00000800 /* extra offset required */ #define FLG_RE_REGISTER 0x00001000 /* relocation initializes */ /* a REGISTER by OLO10 */ #define FLG_RE_NOTSUP 0x00010000 /* relocation not supported */ #define FLG_RE_SEGREL 0x00040000 /* segment relative */ #define FLG_RE_SECREL 0x00080000 /* section relative */ #define FLG_RE_TLSGD 0x00200000 /* TLS GD relocation */ #define FLG_RE_TLSLD 0x00400000 /* TLS LD relocation */ #define FLG_RE_TLSIE 0x00800000 /* TLS IE relocation */ #define FLG_RE_TLSLE 0x01000000 /* TLS LE relocation */ #define FLG_RE_LOCLBND 0x02000000 /* relocation must bind */ /* locally */ /* * In user land, redefine the relocation table and relocation engine to be * class specific if necessary. This allows both engines to reside in the * intel/amd version of libld. */ #if !defined(_KERNEL) #if defined(_ELF64) #define do_reloc do64_reloc #define reloc_table reloc64_table #else #define do_reloc do32_reloc #define reloc_table reloc32_table #endif #endif /* * Relocation table and macros for testing relocation table flags. */ extern const Rel_entry reloc_table[]; #define IS_PLT(X) ((reloc_table[(X)].re_flags & \ FLG_RE_PLTREL) != 0) #define IS_GOT_RELATIVE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_GOTADD) != 0) #define IS_GOT_PC(X) ((reloc_table[(X)].re_flags & \ FLG_RE_GOTPC) != 0) #define IS_GOTPCREL(X) ((reloc_table[(X)].re_flags & \ (FLG_RE_GOTPC | FLG_RE_GOTADD)) == \ (FLG_RE_GOTPC | FLG_RE_GOTADD)) #define IS_GOT_BASED(X) ((reloc_table[(X)].re_flags & \ FLG_RE_GOTREL) != 0) #define IS_GOT_INS(X) ((reloc_table[(X)].re_flags & \ FLG_RE_GOTOPINS) != 0) #define IS_GOT_REQUIRED(X) ((reloc_table[(X)].re_flags & \ (FLG_RE_GOTADD | FLG_RE_GOTREL | \ FLG_RE_GOTPC | FLG_RE_GOTOPINS)) != 0) #define IS_PC_RELATIVE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_PCREL) != 0) #define IS_ADD_RELATIVE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_ADDRELATIVE) != 0) #define IS_REGISTER(X) ((reloc_table[(X)].re_flags & \ FLG_RE_REGISTER) != 0) #define IS_FORMOFF(X) ((reloc_table[(X)].re_flags & \ FLG_RE_FRMOFF) != 0) #define IS_NOTSUP(X) ((reloc_table[(X)].re_flags & \ FLG_RE_NOTSUP) != 0) #define IS_SEG_RELATIVE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_SEGREL) != 0) #define IS_EXTOFFSET(X) ((reloc_table[(X)].re_flags & \ FLG_RE_EXTOFFSET) != 0) #define IS_SEC_RELATIVE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_SECREL) != 0) #define IS_TLS_INS(X) ((reloc_table[(X)].re_flags & \ (FLG_RE_TLSGD | FLG_RE_TLSLD | \ FLG_RE_TLSIE | FLG_RE_TLSLE)) != 0) #define IS_TLS_GD(X) ((reloc_table[(X)].re_flags & \ FLG_RE_TLSGD) != 0) #define IS_TLS_LD(X) ((reloc_table[(X)].re_flags & \ FLG_RE_TLSLD) != 0) #define IS_TLS_IE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_TLSIE) != 0) #define IS_TLS_LE(X) ((reloc_table[(X)].re_flags & \ FLG_RE_TLSLE) != 0) #define IS_LOCALBND(X) ((reloc_table[(X)].re_flags & \ FLG_RE_LOCLBND) != 0) /* * Relocation engine. */ extern int do_reloc(uchar_t, uchar_t *, Xword *, const char *, const char *, void *); #if defined(_KERNEL) /* * These are macro's that are only needed for krtld. Many of these are already * defined in the sgs/include files referenced by ld and rtld */ #define S_MASK(n) ((1l << (n)) - 1l) #define S_INRANGE(v, n) (((-(1l << (n)) - 1l) < (v)) && ((v) < (1l << (n)))) /* * Message strings used by doreloc(). */ #define MSG_STR_UNKNOWN "(unknown)" #define MSG_REL_PREGEN "relocation error: %s: " #define MSG_REL_PREFIL "relocation error: file %s: " #define MSG_REL_FILE "file %s: " #define MSG_REL_SYM "symbol %s: " #define MSG_REL_VALUE "value 0x%llx " #define MSG_REL_LOSEBITS "loses %d bits at " #define MSG_REL_UNIMPL "unimplemented relocation type: %d" #define MSG_REL_UNSUPSZ "offset size (%d bytes) is not supported" #define MSG_REL_NONALIGN "offset 0x%llx is non-aligned" #define MSG_REL_UNNOBITS "unsupported number of bits: %d" #define MSG_REL_OFFSET "offset 0x%llx" #define MSG_REL_NOFIT "value 0x%llx does not fit" /* * Provide a macro to select the appropriate conversion routine for this * architecture. */ #if defined(__amd64) extern const char *conv_reloc_amd64_type(Word); #define CONV_RELOC_TYPE conv_reloc_amd64_type #elif defined(__i386) extern const char *conv_reloc_386_type(Word); #define CONV_RELOC_TYPE conv_reloc_386_type #elif defined(__sparc) extern const char *conv_reloc_SPARC_type(Word); #define CONV_RELOC_TYPE conv_reloc_SPARC_type #else #error platform not defined! #endif /* * Note: dlerror() only keeps track of a single error string, and therefore * must have errors reported through a single eprintf() call. The kernel's * _kobj_printf is somewhat more limited, and must receive messages with only * one argument to the format string. The following macros account for these * differences, as krtld and rtld share do_reloc(). */ #define REL_ERR_UNIMPL(lml, file, sym, rtype) \ _kobj_printf(ops, MSG_REL_PREFIL, (file)); \ _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ _kobj_printf(ops, MSG_REL_UNIMPL, (int)(rtype)) #define REL_ERR_UNSUPSZ(lml, file, sym, rtype, size) \ _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ _kobj_printf(ops, MSG_REL_FILE, (file)); \ _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ _kobj_printf(ops, MSG_REL_UNSUPSZ, (int)(size)) #define REL_ERR_NONALIGN(lml, file, sym, rtype, off) \ _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ _kobj_printf(ops, MSG_REL_FILE, (file)); \ _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ _kobj_printf(ops, MSG_REL_NONALIGN, EC_OFF((off))) #define REL_ERR_UNNOBITS(lml, file, sym, rtype, nbits) \ _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ _kobj_printf(ops, MSG_REL_FILE, (file)); \ _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ _kobj_printf(ops, MSG_REL_UNNOBITS, (nbits)) #define REL_ERR_LOSEBITS(lml, file, sym, rtype, uvalue, nbits, off) \ _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ _kobj_printf(ops, MSG_REL_FILE, (file)); \ _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ _kobj_printf(ops, MSG_REL_VALUE, EC_XWORD((uvalue))); \ _kobj_printf(ops, MSG_REL_LOSEBITS, (int)(nbits)); \ _kobj_printf(ops, MSG_REL_OFFSET, EC_NATPTR((off))) #define REL_ERR_NOFIT(lml, file, sym, rtype, uvalue) \ _kobj_printf(ops, MSG_REL_PREGEN, CONV_RELOC_TYPE((rtype))); \ _kobj_printf(ops, MSG_REL_FILE, (file)); \ _kobj_printf(ops, MSG_REL_SYM, ((sym) ? (sym) : MSG_STR_UNKNOWN)); \ _kobj_printf(ops, MSG_REL_NOFIT, EC_XWORD((uvalue))) #else /* !_KERNEL */ extern const char *demangle(const char *); #define REL_ERR_UNIMPL(lml, file, sym, rtype) \ (eprintf(lml, ERR_FATAL, MSG_INTL(MSG_REL_UNIMPL), (file), \ ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (int)(rtype))) #define REL_ERR_UNSUPSZ(lml, file, sym, rtype, size) \ (eprintf(lml, ERR_FATAL, MSG_INTL(MSG_REL_UNSUPSZ), \ conv_reloc_type(M_MACH, (rtype), 0), (file), \ ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (int)(size))) #define REL_ERR_NONALIGN(lml, file, sym, rtype, off) \ (eprintf(lml, ERR_FATAL, MSG_INTL(MSG_REL_NONALIGN), \ conv_reloc_type(M_MACH, (rtype), 0), (file), \ ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), EC_OFF((off)))) #define REL_ERR_UNNOBITS(lml, file, sym, rtype, nbits) \ (eprintf(lml, ERR_FATAL, MSG_INTL(MSG_REL_UNNOBITS), \ conv_reloc_type(M_MACH, (rtype), 0), (file), \ ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (nbits))) #define REL_ERR_LOSEBITS(lml, file, sym, rtype, uvalue, nbits, off) \ (eprintf(lml, ERR_FATAL, MSG_INTL(MSG_REL_LOSEBITS), \ conv_reloc_type(M_MACH, (rtype), 0), (file), \ ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \ EC_XWORD((uvalue)), (nbits), EC_NATPTR((off)))) #define REL_ERR_NOFIT(lml, file, sym, rtype, uvalue) \ (eprintf(lml, ERR_FATAL, MSG_INTL(MSG_REL_NOFIT), \ conv_reloc_type(M_MACH, (rtype), 0), (file), \ ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \ EC_XWORD((uvalue)))) #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* _RELOC_DOT_H */