reloc.h revision c2e7b48d563d0e56b74d853118918af352e75cbb
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 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 <sys/machelf.h>
#include <sys/bootconf.h>
#include <sys/kobj.h>
#include <sys/kobj_impl.h>
#else
#include <machdep.h>
#endif /* _KERNEL */
#include <relmach.h>
#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_MSB 0x00002000 /* merced MSB data field */
#define FLG_RE_LSB 0x00004000 /* merced LSB data field */
#define FLG_RE_ADDFIELD 0x00008000 /* add contents of field at */
/* r_offset to value */
#define FLG_RE_NOTSUP 0x00010000 /* relocation not supported */
#define FLG_RE_FRMOFF 0x00020000 /* offset contains islot */
/* value (IA64) */
#define FLG_RE_SEGREL 0x00040000 /* Segment relative */
#define FLG_RE_SECREL 0x00080000 /* Section relative */
#define FLG_RE_TLSINS 0x00100000 /* TLS instructino rel */
#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 */
/*
* 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_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_TLSINS) != 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_TLS(X) ((reloc_table[(X)].re_flags &\
(FLG_RE_TLSINS|FLG_RE_TLSGD| \
FLG_RE_TLSLD|FLG_RE_TLSIE| \
FLG_RE_TLSLE)) != 0)
#define IS_LOCALBND(X) ((reloc_table[(X)].re_flags &\
FLG_RE_LOCLBND) != 0)
/*
* Functions.
*/
#if defined(__i386) || defined(__amd64)
extern int do_reloc(unsigned char, unsigned char *, Xword *,
const char *, const char *);
#elif defined(__sparc)
extern int do_reloc(unsigned char, unsigned char *, Xword *,
const char *, const char *);
#endif
/*
* NOTE - this CONVRELOC macro is only used
* in the REL_ERR_NOFIT() macro below. For Intel
* this macro is only referenced from the amd64 side - it's
* not relevant for i386. So - we just define AMD64 for i386
* and sparc is sparc.
*/
#if defined(__amd64) || defined(__i386)
#define CONVRELOC conv_reloc_amd64_type_str
#elif defined(__sparc)
#define CONVRELOC conv_reloc_SPARC_type_str
#else
#error platform not defined!
#endif
#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))))
/*
* This converts the sgs eprintf() routine into the _printf()
* as used by krtld.
*/
#define eprintf _kobj_printf
#define ERR_FATAL ops
/*
* Message strings used by doreloc()
*/
#define MSG_ORIG(x) x
#define MSG_INTL(x) x
#define MSG_STR_UNKNOWN "(unknown)"
#define MSG_REL_UNSUPSZ "relocation error: %s: file %s: symbol %s: " \
"offset size (%d bytes) is not supported"
#define MSG_REL_ERR_STR "relocation error: %s:"
#define MSG_REL_ERR_WITH_FILE "relocation error: file %s: "
#define MSG_REL_ERR_FILE " file %s: "
#define MSG_REL_ERR_SYM " symbol %s: "
#define MSG_REL_ERR_VALUE " value 0x%llx"
#define MSG_REL_ERR_OFF " offset 0x%llx\n"
#define MSG_REL_UNIMPL " unimplemented relocation type: %d"
#define MSG_REL_NONALIGN " offset 0x%llx is non-aligned\n"
#define MSG_REL_UNNOBITS " unsupported number of bits: %d"
#define MSG_REL_NOFIT " value 0x%llx does not fit\n"
#define MSG_REL_LOSEBITS " loses %d bits at"
extern const char *conv_reloc_SPARC_type_str(Word rtype);
extern const char *conv_reloc_386_type_str(Word rtype);
extern const char *conv_reloc_amd64_type_str(Word rtype);
/*
* Note: Related to bug 4128755, dlerror() only keeps track
* of a single error string, and therefore must have errors
* reported through a single eprintf() call. The kernel's
* printf is somewhat more limited, and must receive messages
* with only one arguement to the format string. The following
* macros are to straighted all this out because krtld and
* rtld share do_reloc().
*/
#define REL_ERR_UNIMPL(file, sym, rtype) \
eprintf(ERR_FATAL, MSG_REL_ERR_WITH_FILE, (file)); \
eprintf(ERR_FATAL, MSG_REL_ERR_SYM, \
((sym) ? (sym) : MSG_STR_UNKNOWN)); \
eprintf(ERR_FATAL, MSG_REL_UNIMPL, \
(int)(rtype))
#define REL_ERR_NONALIGN(file, sym, rtype, off) \
eprintf(ERR_FATAL, MSG_REL_ERR_STR, \
conv_reloc_SPARC_type_str((rtype))); \
eprintf(ERR_FATAL, MSG_REL_ERR_FILE, (file)); \
eprintf(ERR_FATAL, MSG_REL_ERR_SYM, \
((sym) ? (sym) : MSG_STR_UNKNOWN)); \
eprintf(ERR_FATAL, MSG_REL_NONALIGN, \
EC_OFF((off)))
#define REL_ERR_UNNOBITS(file, sym, rtype, nbits) \
eprintf(ERR_FATAL, MSG_REL_ERR_STR, \
conv_reloc_SPARC_type_str((rtype))); \
eprintf(ERR_FATAL, MSG_REL_ERR_FILE, (file)); \
eprintf(ERR_FATAL, MSG_REL_ERR_SYM, \
((sym) ? (sym) : MSG_STR_UNKNOWN)); \
eprintf(ERR_FATAL, MSG_REL_UNNOBITS, (nbits))
#define REL_ERR_LOSEBITS(file, sym, rtype, uvalue, nbits, off) \
eprintf(ERR_FATAL, MSG_REL_ERR_STR, \
conv_reloc_SPARC_type_str((rtype))); \
eprintf(ERR_FATAL, MSG_REL_ERR_FILE, (file)); \
eprintf(ERR_FATAL, MSG_REL_ERR_SYM, \
((sym) ? (sym) : MSG_STR_UNKNOWN)); \
eprintf(ERR_FATAL, MSG_REL_ERR_VALUE, EC_XWORD((uvalue))); \
eprintf(ERR_FATAL, MSG_REL_LOSEBITS, (nbits)); \
eprintf(ERR_FATAL, MSG_REL_ERR_OFF, EC_ADDR((off)))
#define REL_ERR_NOFIT(file, sym, rtype, uvalue) \
eprintf(ERR_FATAL, MSG_REL_ERR_STR, \
CONVRELOC((rtype))); \
eprintf(ERR_FATAL, MSG_REL_ERR_FILE, (file)); \
eprintf(ERR_FATAL, MSG_REL_ERR_SYM, \
((sym) ? (sym) : MSG_STR_UNKNOWN)); \
eprintf(ERR_FATAL, MSG_REL_NOFIT, EC_XWORD((uvalue)))
#else /* !_KERNEL */
extern const char *demangle(const char *);
#define REL_ERR_UNIMPL(file, sym, rtype) \
(eprintf(ERR_FATAL, MSG_INTL(MSG_REL_UNIMPL), \
(file), ((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \
(int)(rtype)))
#define REL_ERR_NONALIGN(file, sym, rtype, off) \
(eprintf(ERR_FATAL, MSG_INTL(MSG_REL_NONALIGN), \
conv_reloc_SPARC_type_str(rtype), (file), \
((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \
EC_OFF((off))))
#define REL_ERR_UNNOBITS(file, sym, rtype, nbits) \
(eprintf(ERR_FATAL, MSG_INTL(MSG_REL_UNNOBITS), \
conv_reloc_SPARC_type_str(rtype), (file), \
((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), (nbits)))
#define REL_ERR_LOSEBITS(file, sym, rtype, uvalue, nbits, off) \
(eprintf(ERR_FATAL, MSG_INTL(MSG_REL_LOSEBITS), \
conv_reloc_SPARC_type_str((rtype)), (file), \
((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \
EC_XWORD((uvalue)), (nbits), EC_ADDR((off))))
#define REL_ERR_NOFIT(file, sym, rtype, uvalue) \
(eprintf(ERR_FATAL, MSG_INTL(MSG_REL_NOFIT), \
CONVRELOC((rtype)), (file), \
((sym) ? demangle(sym) : MSG_INTL(MSG_STR_UNKNOWN)), \
EC_XWORD((uvalue))))
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _RELOC_DOT_H */