usr/src/cmd/sgs/include/sparc/machdep_sparc.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 (c) 1988 AT&T
  24  *        All Rights Reserved
  25  *
  26  * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
  27  *
  28  * Global include file for all sgs SPARC machine dependent macros, constants
  29  * and declarations.
  30  */
  31
  32 #ifndef _MACHDEP_SPARC_H
  33 #define _MACHDEP_SPARC_H
  34
  35 #include <link.h>
  36 #include <sys/machelf.h>
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 /*
  43  * Elf header information.
  44  */
  45 #define M_MACH_32               EM_SPARC
  46 #define M_MACH_64               EM_SPARCV9
  47
  48 #ifdef _ELF64
  49 #define M_MACH                  EM_SPARCV9
  50 #define M_CLASS                 ELFCLASS64
  51 #else
  52 #define M_MACH                  EM_SPARC
  53 #define M_CLASS                 ELFCLASS32
  54 #endif
  55 #define M_MACHPLUS              EM_SPARC32PLUS
  56 #define M_DATA                  ELFDATA2MSB
  57 #define M_FLAGSPLUS             EF_SPARC_32PLUS
  58
  59 /*
  60  * Page boundary Macros: truncate to previous page boundary and round to
  61  * next page boundary (refer to generic macros in ../sgs.h also).
  62  */
  63 #define M_PTRUNC(X)     ((X) & ~(syspagsz - 1))
  64 #define M_PROUND(X)     (((X) + syspagsz - 1) & ~(syspagsz - 1))
  65
  66 /*
  67  * Segment boundary macros: truncate to previous segment boundary and round
  68  * to next page boundary.
  69  */
  70 #ifndef M_SEGSIZE
  71 #define M_SEGSIZE       ELF_SPARC_MAXPGSZ
  72 #endif
  73 #define M_STRUNC(X)     ((X) & ~(M_SEGSIZE - 1))
  74 #define M_SROUND(X)     (((X) + M_SEGSIZE - 1) & ~(M_SEGSIZE - 1))
  75
  76 /*
  77  * Relocation type macro.
  78  */
  79 #define M_RELOC         Rela
  80
  81 /*
  82  * TLS static segments must be rounded to the following requirements,
  83  * due to libthread stack allocation.
  84  */
  85 #if     defined(_ELF64)
  86 #define M_TLSSTATALIGN  0x10
  87 #else
  88 #define M_TLSSTATALIGN  0x08
  89 #endif
  90
  91 /*
  92  * Instruction encodings.
  93  */
  94 #define M_SAVESP64      0x9de3bfc0      /* save %sp, -64, %sp */
  95 #define M_CALL          0x40000000
  96 #define M_JMPL          0x81c06000      /* jmpl %g1 + simm13, %g0 */
  97 #define M_SETHIG0       0x01000000      /* sethi %hi(val), %g0 */
  98 #define M_SETHIG1       0x03000000      /* sethi %hi(val), %g1 */
  99 #define M_STO7G1IM      0xde206000      /* st    %o7,[%g1 + %lo(val)] */
 100 #define M_SUBFPSPG1     0x8227800e      /* sub  %fp,%sp,%g1 */
 101 #define M_NOP           0x01000000      /* sethi 0, %o0 (nop) */
 102 #define M_BA_A          0x30800000      /* ba,a */
 103 #define M_BA_A_PT       0x30480000      /* ba,a %icc, <dst> */
 104 #define M_MOVO7TOG1     0x8210000f      /* mov %o7, %g1 */
 105 #define M_MOVO7TOG5     0x8a10000f      /* mov %o7, %g5 */
 106 #define M_MOVI7TOG1     0x8210001f      /* mov %i7, %g1 */
 107 #define M_BA_A_XCC      0x30680000      /* ba,a %xcc */
 108 #define M_JMPL_G5G0     0x81c16000      /* jmpl %g5 + 0, %g0 */
 109 #define M_XNOR_G5G1     0x82396000      /* xnor %g5, 0, %g1 */
 110
 111
 112 #define M_BIND_ADJ      4               /* adjustment for end of */
 113                                         /*      elf_rtbndr() address */
 114
 115 /* transition flags for got sizing */
 116 #define M_GOT_LARGE     (Sword)(-M_GOT_MAXSMALL - 1)
 117 #define M_GOT_SMALL     (Sword)(-M_GOT_MAXSMALL - 2)
 118 #define M_GOT_MIXED     (Sword)(-M_GOT_MAXSMALL - 3)
 119
 120 /*
 121  * Other machine dependent entities
 122  */
 123 #ifdef _ELF64
 124 #define M_SEGM_ALIGN    ELF_SPARCV9_MAXPGSZ
 125 /*
 126  * Put default 64-bit programs above 4 gigabytes to help insure correctness, so
 127  * that any 64-bit programs that truncate pointers will fault now instead of
 128  * corrupting itself and dying mysteriously.  64-bit programs can also be
 129  * restricted to a 32-bit address space (SF1_SUNW_ADDR32), and these programs
 130  * provide an alternative origin.
 131  */
 132 #define M_SEGM_ORIGIN   (Addr)0x100000000ULL    /* default 1st segment origin */
 133 #define M_SEGM_AORIGIN  (Addr)0x100000ULL       /* alternative 1st segment */
 134                                                 /*    origin */
 135 #else
 136 #define M_SEGM_ALIGN    ELF_SPARC_MAXPGSZ
 137 #define M_SEGM_ORIGIN   (Addr)0x10000           /* default 1st segment origin */
 138 #define M_SEGM_AORIGIN  M_SEGM_ORIGIN           /* alternative 1st segment */
 139                                                 /*    origin */
 140 #endif
 141
 142 /*
 143  * Make common relocation information transparent to the common code
 144  */
 145 #define M_REL_DT_TYPE   DT_RELA         /* .dynamic entry */
 146 #define M_REL_DT_SIZE   DT_RELASZ       /* .dynamic entry */
 147 #define M_REL_DT_ENT    DT_RELAENT      /* .dynamic entry */
 148 #define M_REL_DT_COUNT  DT_RELACOUNT    /* .dynamic entry */
 149 #define M_REL_SHT_TYPE  SHT_RELA        /* section header type */
 150 #define M_REL_ELF_TYPE  ELF_T_RELA      /* data buffer type */
 151
 152 /*
 153  * Make common relocation types transparent to the common code
 154  */
 155 #define M_R_NONE        R_SPARC_NONE
 156 #define M_R_GLOB_DAT    R_SPARC_GLOB_DAT
 157 #define M_R_COPY        R_SPARC_COPY
 158 #define M_R_RELATIVE    R_SPARC_RELATIVE
 159 #define M_R_JMP_SLOT    R_SPARC_JMP_SLOT
 160 #define M_R_REGISTER    R_SPARC_REGISTER
 161 #define M_R_FPTR        R_SPARC_NONE
 162 #define M_R_NUM         R_SPARC_NUM
 163
 164 #ifdef  _ELF64
 165 #define M_R_ARRAYADDR   R_SPARC_64
 166 #define M_R_DTPMOD      R_SPARC_TLS_DTPMOD64
 167 #define M_R_DTPOFF      R_SPARC_TLS_DTPOFF64
 168 #define M_R_TPOFF       R_SPARC_TLS_TPOFF64
 169 #else   /* _ELF32 */
 170 #define M_R_ARRAYADDR   R_SPARC_32
 171 #define M_R_DTPMOD      R_SPARC_TLS_DTPMOD32
 172 #define M_R_DTPOFF      R_SPARC_TLS_DTPOFF32
 173 #define M_R_TPOFF       R_SPARC_TLS_TPOFF32
 174 #endif  /* _ELF64 */
 175
 176
 177 /*
 178  * Make register symbols transparent to common code
 179  */
 180 #define M_DT_REGISTER   DT_SPARC_REGISTER
 181
 182 /*
 183  * Make plt section information transparent to the common code.
 184  */
 185 #define M_PLT_SHF_FLAGS (SHF_ALLOC | SHF_WRITE | SHF_EXECINSTR)
 186
 187 /*
 188  * Make default data segment and stack flags transparent to the common code.
 189  */
 190 #define M_DATASEG_PERM  (PF_R | PF_W | PF_X)
 191 #ifdef _ELF64
 192 #define M_STACK_PERM    (PF_R | PF_W)
 193 #else
 194 #define M_STACK_PERM    (PF_R | PF_W | PF_X)
 195 #endif
 196
 197 /*
 198  * Define a set of identifies for special sections.  These allow the sections
 199  * to be ordered within the output file image.  These values should be
 200  * maintained consistently, where appropriate, in each platform specific header
 201  * file.
 202  *
 203  *  -   null identifies that this section does not need to be added to the
 204  *      output image (ie. shared object sections or sections we're going to
 205  *      recreate (sym tables, string tables, relocations, etc.)).
 206  *
 207  *  -   any user defined section will be first in the associated segment.
 208  *
 209  *  -   interp and capabilities sections are next, as these are accessed
 210  *      immediately the first page of the image is mapped.
 211  *
 212  *  -   objects that do not provide an interp normally have a read-only
 213  *      .dynamic section that comes next (in this case, there is no need to
 214  *      update a DT_DEBUG entry at runtime).
 215  *
 216  *  -   the syminfo, hash, dynsym, dynstr and rel's are grouped together as
 217  *      these will all be accessed together by ld.so.1 to perform relocations.
 218  *
 219  *  -   the got, dynamic, and plt are grouped together as these may also be
 220  *      accessed first by ld.so.1 to perform relocations, fill in DT_DEBUG
 221  *      (executables only), and .plt[0].
 222  *
 223  *  -   unknown sections (stabs, comments, etc.) go at the end.
 224  *
 225  * Note that .tlsbss/.bss are given the largest identifiers.  This insures that
 226  * if any unknown sections become associated to the same segment as the .bss,
 227  * the .bss sections are always the last section in the segment.
 228  */
 229 #define M_ID_NULL       0x00
 230 #define M_ID_USER       0x01
 231
 232 #define M_ID_INTERP     0x02                    /* SHF_ALLOC */
 233 #define M_ID_CAP        0x03
 234 #define M_ID_CAPINFO    0x04
 235 #define M_ID_CAPCHAIN   0x05
 236
 237 #define M_ID_DYNAMIC    0x06                    /* if no .interp, then no */
 238                                                 /*    DT_DEBUG is required */
 239 #define M_ID_UNWINDHDR  0x07
 240 #define M_ID_UNWIND     0x08
 241
 242 #define M_ID_SYMINFO    0x09
 243 #define M_ID_HASH       0x0a
 244 #define M_ID_LDYNSYM    0x0b                    /* always right before DYNSYM */
 245 #define M_ID_DYNSYM     0x0c
 246 #define M_ID_DYNSTR     0x0d
 247 #define M_ID_VERSION    0x0e
 248 #define M_ID_DYNSORT    0x0f
 249 #define M_ID_REL        0x10
 250 #define M_ID_ARRAY      0x11
 251 #define M_ID_TEXT       0x12                    /* SHF_ALLOC + SHF_EXECINSTR */
 252 #define M_ID_DATA       0x20
 253
 254 /*      M_ID_USER       0x01                    dual entry - listed above */
 255 #define M_ID_GOTDATA    0x02                    /* SHF_ALLOC + SHF_WRITE */
 256 #define M_ID_GOT        0x03
 257 #define M_ID_PLT        0x04
 258 /*      M_ID_DYNAMIC    0x06                    dual entry - listed above */
 259 /*      M_ID_UNWIND     0x08                    dual entry - listed above */
 260
 261 #define M_ID_UNKNOWN    0xfc                    /* just before TLS */
 262
 263 #define M_ID_TLS        0xfd                    /* just before bss */
 264 #define M_ID_TLSBSS     0xfe
 265 #define M_ID_BSS        0xff
 266
 267 #define M_ID_SYMTAB_NDX 0x02                    /* ! SHF_ALLOC */
 268 #define M_ID_SYMTAB     0x03
 269 #define M_ID_STRTAB     0x04
 270 #define M_ID_DYNSYM_NDX 0x05
 271 #define M_ID_NOTE       0x06
 272
 273
 274 #ifdef  __cplusplus
 275 }
 276 #endif
 277
 278 #endif /* _MACHDEP_SPARC_H */