usr/src/lib/libdwarf/common/pro_util.h

   1 /*
   2
   3   Copyright (C) 2000,2004 Silicon Graphics, Inc.  All Rights Reserved.
   4   Portions Copyright 2002-2010 Sun Microsystems, Inc. All rights reserved.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms of version 2.1 of the GNU Lesser General Public License
   8   as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope that it would be useful, but
  11   WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13
  14   Further, this software is distributed without any warranty that it is
  15   free of the rightful claim of any third person regarding infringement
  16   or the like.  Any license provided herein, whether implied or
  17   otherwise, applies only to this software file.  Patent licenses, if
  18   any, provided herein do not apply to combinations of this program with
  19   other software, or any other product whatsoever.
  20
  21   You should have received a copy of the GNU Lesser General Public
  22   License along with this program; if not, write the Free Software
  23   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
  24   USA.
  25
  26   Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
  27   Mountain View, CA 94043, or:
  28
  29   http://www.sgi.com
  30
  31   For further information regarding this notice, see:
  32
  33   http://oss.sgi.com/projects/GenInfo/NoticeExplan
  34
  35 */
  36
  37
  38
  39
  40 #define IS_64BIT(dbg) ((dbg)->de_flags & DW_DLC_SIZE_64 ? 1 : 0)
  41 #define ISA_IA64(dbg) ((dbg)->de_flags & DW_DLC_ISA_IA64 ? 1 : 0)
  42
  43 /* definition of sizes of types, given target machine */
  44 #define sizeof_sbyte(dbg) sizeof(Dwarf_Sbyte)
  45 #define sizeof_ubyte(dbg) sizeof(Dwarf_Ubyte)
  46 #define sizeof_uhalf(dbg) sizeof(Dwarf_Half)
  47 /* certain sizes not defined here, but set in dbg record.
  48    See pro_init.c
  49 */
  50
  51 /* Computes amount of padding necessary to align n to a k-boundary. */
  52 /* Important: Assumes n, k both GREATER than zero. */
  53 #define PADDING(n, k) ( (k)-1 - ((n)-1)%(k) )
  54
  55 /* The following defines are only important for users of the
  56 ** producer part of libdwarf, and such should have these
  57 ** defined correctly (as necessary)
  58 ** by the #include <elf.h> done in pro_incl.h
  59 ** before the #include "pro_util.h".
  60 ** For others producer macros do not matter so 0 is a usable value, and
  61 ** zero values let compilation succeed on more non-MIPS architectures.
  62 ** A better approach would be welcome.
  63 */
  64 /* R_MIPS* are #define so #ifndef works */
  65 /* R_IA_64* are not necessarily #define (might be enum) so #ifndef
  66    is useless, we use the configure script generating
  67    HAVE_R_IA_64_DIR32LSB and HAVE_R_IA64_DIR32LSB.
  68 */
  69 #ifndef R_MIPS_64
  70 #define R_MIPS_64 0
  71 #endif
  72 #ifndef R_MIPS_32
  73 #define R_MIPS_32 0
  74 #endif
  75 #ifndef R_MIPS_SCN_DISP
  76 #define R_MIPS_SCN_DISP 0
  77 #endif
  78
  79 /* R_IA_64_DIR32LSB came before the now-standard R_IA64_DIR32LSB
  80    (etc) was defined.  This now deals with either form,
  81    preferring the new form if available.  */
  82 #ifdef HAVE_R_IA64_DIR32LSB
  83 #define DWARF_PRO_R_IA64_DIR32LSB R_IA64_DIR32LSB
  84 #define DWARF_PRO_R_IA64_DIR64LSB R_IA64_DIR64LSB
  85 #define DWARF_PRO_R_IA64_SEGREL64LSB R_IA64_SEGREL64LSB
  86 #define DWARF_PRO_R_IA64_SEGREL32LSB R_IA64_SEGREL32LSB
  87 #endif
  88 #if defined(HAVE_R_IA_64_DIR32LSB) && !defined(HAVE_R_IA64_DIR32LSB)
  89 #define DWARF_PRO_R_IA64_DIR32LSB R_IA_64_DIR32LSB
  90 #define DWARF_PRO_R_IA64_DIR64LSB R_IA_64_DIR64LSB
  91 #define DWARF_PRO_R_IA64_SEGREL64LSB R_IA_64_SEGREL64LSB
  92 #define DWARF_PRO_R_IA64_SEGREL32LSB R_IA_64_SEGREL32LSB
  93 #endif
  94 #if !defined(HAVE_R_IA_64_DIR32LSB) && !defined(HAVE_R_IA64_DIR32LSB)
  95 #define DWARF_PRO_R_IA64_DIR32LSB 0
  96 #define DWARF_PRO_R_IA64_DIR64LSB 0
  97 #define DWARF_PRO_R_IA64_SEGREL64LSB 0
  98 #define DWARF_PRO_R_IA64_SEGREL32LSB 0
  99 #endif
 100
 101 /*
 102  * The default "I don't know" value can't be zero.
 103  * Because that's the sentinel value that means "no relocation".
 104  * In order to use this library in 'symbolic relocation mode we
 105  * don't care if this value is the right relocation value,
 106  * only that it's non-NULL.  So at the end, we define it
 107  * to something sensible.
 108  */
 109
 110
 111
 112 #if defined(sun)
 113 #if defined(sparc)
 114 #define Get_REL64_isa(dbg)         (R_SPARC_UA64)
 115 #define Get_REL32_isa(dbg)         (R_SPARC_UA32)
 116 #define Get_REL_SEGREL_isa(dbg)    (R_SPARC_NONE) /* I don't know! */
 117 #else  /* i386 */
 118 #define Get_REL64_isa(dbg)         (R_386_32)   /* Any non-zero value is ok */
 119 #define Get_REL32_isa(dbg)         (R_386_32)
 120 #define Get_REL_SEGREL_isa(dbg)    (R_386_NONE) /* I don't know! */
 121 #endif /* sparc || i386 */
 122 #else  /* !sun */
 123 #ifdef HAVE_SYS_IA64_ELF_H
 124 #define Get_REL64_isa(dbg)         (ISA_IA64(dbg) ? \
 125     DWARF_PRO_R_IA64_DIR64LSB : R_MIPS_64)
 126 #define Get_REL32_isa(dbg)         (ISA_IA64(dbg) ? \
 127     DWARF_PRO_R_IA64_DIR32LSB : R_MIPS_32)
 128
 129
 130 /* ia64 uses 32bit dwarf offsets for sections */
 131 #define Get_REL_SEGREL_isa(dbg)    (ISA_IA64(dbg) ? \
 132     DWARF_PRO_R_IA64_SEGREL32LSB : R_MIPS_SCN_DISP)
 133 #else /* HAVE_SYS_IA64_ELF_H */
 134
 135 #if !defined(linux) && !defined(__BEOS__)
 136 #define Get_REL64_isa(dbg)         (R_MIPS_64)
 137 #define Get_REL32_isa(dbg)         (R_MIPS_32)
 138 #define Get_REL_SEGREL_isa(dbg)    (R_MIPS_SCN_DISP)
 139 #else
 140 #define Get_REL64_isa(dbg) (1)
 141 #define Get_REL32_isa(dbg) (1)   /* these are used on linux */
 142 #define Get_REL_SEGREL_isa(dbg) (1)   /* non zero values, see comments above */
 143 #endif
 144
 145 #endif /* HAVE_SYS_IA64_ELF_H */
 146 #endif /* !sun */
 147
 148