include/krtld/reloc_defs.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _RELOC_DEFS_DOT_H
  28 #define _RELOC_DEFS_DOT_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <sys/machelf.h>
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /*
  39  * Definitions used by the relocation common code.
  40  */
  41
  42
  43 /*
  44  * Structure used to build the reloc_table[]
  45  */
  46 typedef struct {
  47         Xword   re_mask;        /* mask to apply to reloc (sparc only) */
  48         Word    re_flags;       /* relocation attributes */
  49         uchar_t re_fsize;       /* field size (in bytes) */
  50         uchar_t re_bshift;      /* number of bits to shift (sparc only) */
  51         uchar_t re_sigbits;     /* number of significant bits */
  52 } Rel_entry;
  53
  54 /*
  55  * Flags for reloc_entry->re_flags
  56  */
  57 #define FLG_RE_NOTREL           0x00000000
  58 #define FLG_RE_GOTADD           0x00000001      /* create a GOT entry */
  59 #define FLG_RE_GOTREL           0x00000002      /* GOT based */
  60 #define FLG_RE_GOTPC            0x00000004      /* GOT - P */
  61 #define FLG_RE_GOTOPINS         0x00000008      /* GOTOP instruction */
  62 #define FLG_RE_PCREL            0x00000010
  63 #define FLG_RE_PLTREL           0x00000020
  64 #define FLG_RE_VERIFY           0x00000040      /* verify value fits */
  65 #define FLG_RE_UNALIGN          0x00000080      /* offset is not aligned */
  66 #define FLG_RE_WDISP16          0x00000100      /* funky sparc DISP16 rel */
  67 #define FLG_RE_SIGN             0x00000200      /* value is signed */
  68 #define FLG_RE_ADDRELATIVE      0x00000400      /* RELATIVE relocation */
  69                                                 /*      required for non- */
  70                                                 /*      fixed objects */
  71 #define FLG_RE_EXTOFFSET        0x00000800      /* extra offset required */
  72 #define FLG_RE_REGISTER         0x00001000      /* relocation initializes */
  73                                                 /*    a REGISTER by OLO10 */
  74 #define FLG_RE_SIZE             0x00002000      /* symbol size required */
  75
  76 #define FLG_RE_NOTSUP           0x00010000      /* relocation not supported */
  77
  78 #define FLG_RE_SEGREL           0x00040000      /* segment relative */
  79 #define FLG_RE_SECREL           0x00080000      /* section relative */
  80
  81 #define FLG_RE_TLSGD            0x00200000      /* TLS GD relocation */
  82 #define FLG_RE_TLSLD            0x00400000      /* TLS LD relocation */
  83 #define FLG_RE_TLSIE            0x00800000      /* TLS IE relocation */
  84 #define FLG_RE_TLSLE            0x01000000      /* TLS LE relocation */
  85 #define FLG_RE_LOCLBND          0x02000000      /* relocation must bind */
  86                                                 /*    locally */
  87
  88 /*
  89  * Relocation table and macros for testing relocation table flags.
  90  */
  91
  92 #define RELTAB_IS_PLT(X, _reltab) \
  93         ((_reltab[(X)].re_flags & FLG_RE_PLTREL) != 0)
  94
  95 #define RELTAB_IS_GOT_RELATIVE(X, _reltab) \
  96         ((_reltab[(X)].re_flags & FLG_RE_GOTADD) != 0)
  97
  98 #define RELTAB_IS_GOT_PC(X, _reltab) \
  99         ((_reltab[(X)].re_flags & FLG_RE_GOTPC) != 0)
 100
 101 #define RELTAB_IS_GOTPCREL(X, _reltab) \
 102         ((_reltab[(X)].re_flags & (FLG_RE_GOTPC | FLG_RE_GOTADD)) == \
 103         (FLG_RE_GOTPC | FLG_RE_GOTADD))
 104
 105 #define RELTAB_IS_GOT_BASED(X, _reltab) \
 106         ((_reltab[(X)].re_flags & FLG_RE_GOTREL) != 0)
 107
 108 #define RELTAB_IS_GOT_OPINS(X, _reltab) \
 109         ((_reltab[(X)].re_flags & FLG_RE_GOTOPINS) != 0)
 110
 111 #define RELTAB_IS_GOT_REQUIRED(X, _reltab) \
 112         ((_reltab[(X)].re_flags & (FLG_RE_GOTADD | FLG_RE_GOTREL | \
 113         FLG_RE_GOTPC | FLG_RE_GOTOPINS)) != 0)
 114
 115 #define RELTAB_IS_PC_RELATIVE(X, _reltab) \
 116         ((_reltab[(X)].re_flags & FLG_RE_PCREL) != 0)
 117
 118 #define RELTAB_IS_ADD_RELATIVE(X, _reltab) \
 119         ((_reltab[(X)].re_flags & FLG_RE_ADDRELATIVE) != 0)
 120
 121 #define RELTAB_IS_REGISTER(X, _reltab) \
 122         ((_reltab[(X)].re_flags & FLG_RE_REGISTER) != 0)
 123
 124 #define RELTAB_IS_NOTSUP(X, _reltab) \
 125         ((_reltab[(X)].re_flags & FLG_RE_NOTSUP) != 0)
 126
 127 #define RELTAB_IS_SEG_RELATIVE(X, _reltab) \
 128         ((_reltab[(X)].re_flags & FLG_RE_SEGREL) != 0)
 129
 130 #define RELTAB_IS_EXTOFFSET(X, _reltab) \
 131         ((_reltab[(X)].re_flags & FLG_RE_EXTOFFSET) != 0)
 132
 133 #define RELTAB_IS_SEC_RELATIVE(X, _reltab) \
 134         ((_reltab[(X)].re_flags & FLG_RE_SECREL) != 0)
 135
 136 #define RELTAB_IS_TLS_INS(X, _reltab) \
 137         ((_reltab[(X)].re_flags & \
 138         (FLG_RE_TLSGD | FLG_RE_TLSLD | FLG_RE_TLSIE | FLG_RE_TLSLE)) != 0)
 139
 140 #define RELTAB_IS_TLS_GD(X, _reltab) \
 141         ((_reltab[(X)].re_flags & FLG_RE_TLSGD) != 0)
 142
 143 #define RELTAB_IS_TLS_LD(X, _reltab) \
 144         ((_reltab[(X)].re_flags & FLG_RE_TLSLD) != 0)
 145
 146 #define RELTAB_IS_TLS_IE(X, _reltab) \
 147         ((_reltab[(X)].re_flags & FLG_RE_TLSIE) != 0)
 148
 149 #define RELTAB_IS_TLS_LE(X, _reltab) \
 150         ((_reltab[(X)].re_flags & FLG_RE_TLSLE) != 0)
 151
 152 #define RELTAB_IS_LOCALBND(X, _reltab) \
 153         ((_reltab[(X)].re_flags & FLG_RE_LOCLBND) != 0)
 154
 155 #define RELTAB_IS_SIZE(X, _reltab) \
 156         ((_reltab[(X)].re_flags & FLG_RE_SIZE) != 0)
 157
 158 #ifdef  __cplusplus
 159 }
 160 #endif
 161
 162 #endif /* _RELOC_DEFS_DOT_H */