include/coff/sh.h

   1 /*** coff information for Hitachi SH */
   2
   3 /********************** FILE HEADER **********************/
   4
   5 struct external_filehdr {
   6         char f_magic[2];        /* magic number                 */
   7         char f_nscns[2];        /* number of sections           */
   8         char f_timdat[4];       /* time & date stamp            */
   9         char f_symptr[4];       /* file pointer to symtab       */
  10         char f_nsyms[4];        /* number of symtab entries     */
  11         char f_opthdr[2];       /* sizeof(optional hdr)         */
  12         char f_flags[2];        /* flags                        */
  13 };
  14
  15
  16
  17 #define SH_ARCH_MAGIC_BIG       0x0500
  18 #define SH_ARCH_MAGIC_LITTLE    0x0550  /* Little endian SH */
  19 #define SH_ARCH_MAGIC_WINCE     0x01a2  /* Windows CE - little endian */
  20 #define SH_PE_MAGIC             0x010b
  21
  22
  23 #define SHBADMAG(x) \
  24  (((x).f_magic!=SH_ARCH_MAGIC_BIG) && \
  25   ((x).f_magic!=SH_ARCH_MAGIC_WINCE) && \
  26   ((x).f_magic!=SH_ARCH_MAGIC_LITTLE))
  27
  28 #define FILHDR  struct external_filehdr
  29 #define FILHSZ  20
  30
  31
  32 /********************** AOUT "OPTIONAL HEADER" **********************/
  33
  34
  35 typedef struct
  36 {
  37   char  magic[2];               /* type of file                         */
  38   char  vstamp[2];              /* version stamp                        */
  39   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  40   char  dsize[4];               /* initialized data "  "                */
  41   char  bsize[4];               /* uninitialized data "   "             */
  42   char  entry[4];               /* entry pt.                            */
  43   char  text_start[4];          /* base of text used for this file */
  44   char  data_start[4];          /* base of data used for this file */
  45 }
  46 AOUTHDR;
  47
  48
  49 #define AOUTHDRSZ 28
  50 #define AOUTSZ 28
  51
  52
  53
  54 /* Define some NT default values.  */
  55 /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
  56 #define NT_SECTION_ALIGNMENT 0x1000
  57 #define NT_FILE_ALIGNMENT    0x200
  58 #define NT_DEF_RESERVE       0x100000
  59 #define NT_DEF_COMMIT        0x1000
  60
  61 /********************** SECTION HEADER **********************/
  62
  63
  64 struct external_scnhdr {
  65         char            s_name[8];      /* section name                 */
  66         char            s_paddr[4];     /* physical address, aliased s_nlib */
  67         char            s_vaddr[4];     /* virtual address              */
  68         char            s_size[4];      /* section size                 */
  69         char            s_scnptr[4];    /* file ptr to raw data for section */
  70         char            s_relptr[4];    /* file ptr to relocation       */
  71         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  72         char            s_nreloc[2];    /* number of relocation entries */
  73         char            s_nlnno[2];     /* number of line number entries*/
  74         char            s_flags[4];     /* flags                        */
  75 };
  76
  77 /*
  78  * names of "special" sections
  79  */
  80 #define _TEXT   ".text"
  81 #define _DATA   ".data"
  82 #define _BSS    ".bss"
  83
  84
  85 #define SCNHDR  struct external_scnhdr
  86 #define SCNHSZ  40
  87
  88
  89 /********************** LINE NUMBERS **********************/
  90
  91 /* 1 line number entry for every "breakpointable" source line in a section.
  92  * Line numbers are grouped on a per function basis; first entry in a function
  93  * grouping will have l_lnno = 0 and in place of physical address will be the
  94  * symbol table index of the function name.
  95  */
  96 struct external_lineno {
  97         union {
  98                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
  99                 char l_paddr[4];        /* (physical) address of line number    */
 100         } l_addr;
 101 #ifdef COFF_WITH_PE
 102         char l_lnno[2]; /* line number          */
 103 #else
 104         char l_lnno[4]; /* line number          */
 105 #endif
 106 };
 107
 108 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno));
 109 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val,  (bfd_byte *) (ext->l_lnno));
 110
 111 #define LINENO  struct external_lineno
 112 #ifdef COFF_WITH_PE
 113 #define LINESZ  6
 114 #undef GET_LINENO_LNNO
 115 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
 116 #undef PUT_LINENO_LNNO
 117 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val,  (bfd_byte *) (ext->l_lnno));
 118 #else
 119 #define LINESZ  8
 120 #endif
 121
 122
 123 /********************** SYMBOLS **********************/
 124
 125 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 126 #define E_FILNMLEN      14      /* # characters in a file name          */
 127 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 128
 129 struct external_syment
 130 {
 131   union {
 132     char e_name[E_SYMNMLEN];
 133     struct {
 134       char e_zeroes[4];
 135       char e_offset[4];
 136     } e;
 137   } e;
 138   char e_value[4];
 139   char e_scnum[2];
 140   char e_type[2];
 141   char e_sclass[1];
 142   char e_numaux[1];
 143 };
 144
 145
 146
 147 #define N_BTMASK        (017)
 148 #define N_TMASK         (060)
 149 #define N_BTSHFT        (4)
 150 #define N_TSHIFT        (2)
 151
 152
 153 union external_auxent {
 154         struct {
 155                 char x_tagndx[4];       /* str, un, or enum tag indx */
 156                 union {
 157                         struct {
 158                             char  x_lnno[2]; /* declaration line number */
 159                             char  x_size[2]; /* str/union/array size */
 160                         } x_lnsz;
 161                         char x_fsize[4];        /* size of function */
 162                 } x_misc;
 163                 union {
 164                         struct {                /* if ISFCN, tag, or .bb */
 165                             char x_lnnoptr[4];  /* ptr to fcn line # */
 166                             char x_endndx[4];   /* entry ndx past block end */
 167                         } x_fcn;
 168                         struct {                /* if ISARY, up to 4 dimen. */
 169                             char x_dimen[E_DIMNUM][2];
 170                         } x_ary;
 171                 } x_fcnary;
 172                 char x_tvndx[2];                /* tv index */
 173         } x_sym;
 174
 175         union {
 176                 char x_fname[E_FILNMLEN];
 177                 struct {
 178                         char x_zeroes[4];
 179                         char x_offset[4];
 180                 } x_n;
 181         } x_file;
 182
 183         struct {
 184                 char x_scnlen[4];                       /* section length */
 185                 char x_nreloc[2];       /* # relocation entries */
 186                 char x_nlinno[2];       /* # line numbers */
 187                 char x_checksum[4];     /* section COMDAT checksum */
 188                 char x_associated[2];   /* COMDAT associated section index */
 189                 char x_comdat[1];       /* COMDAT selection number */
 190         } x_scn;
 191
 192         struct {
 193                 char x_tvfill[4];       /* tv fill value */
 194                 char x_tvlen[2];        /* length of .tv */
 195                 char x_tvran[2][2];     /* tv range */
 196         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 197
 198
 199 };
 200
 201 #define SYMENT  struct external_syment
 202 #define SYMESZ  18
 203 #define AUXENT  union external_auxent
 204 #define AUXESZ  18
 205
 206
 207
 208 /********************** RELOCATION DIRECTIVES **********************/
 209
 210 /* The external reloc has an offset field, because some of the reloc
 211    types on the h8 don't have room in the instruction for the entire
 212    offset - eg the strange jump and high page addressing modes */
 213
 214 #ifndef COFF_WITH_PE
 215 struct external_reloc {
 216   char r_vaddr[4];
 217   char r_symndx[4];
 218   char r_offset[4];
 219   char r_type[2];
 220   char r_stuff[2];
 221 };
 222 #else
 223 struct external_reloc {
 224   char r_vaddr[4];
 225   char r_symndx[4];
 226   char r_type[2];
 227 };
 228 #endif
 229
 230
 231 #define RELOC struct external_reloc
 232 #ifdef COFF_WITH_PE
 233 #define RELSZ 10
 234 #else
 235 #define RELSZ 16
 236 #endif
 237
 238 /* SH relocation types.  Not all of these are actually used.  */
 239
 240 #define R_SH_UNUSED     0               /* only used internally */
 241 #define R_SH_IMM32CE    2               /* 32 bit immediate for WinCE */
 242 #define R_SH_PCREL8     3               /*  8 bit pcrel         */
 243 #define R_SH_PCREL16    4               /* 16 bit pcrel         */
 244 #define R_SH_HIGH8      5               /* high 8 bits of 24 bit address */
 245 #define R_SH_LOW16      7               /* low 16 bits of 24 bit immediate */
 246 #define R_SH_IMM24      6               /* 24 bit immediate */
 247 #define R_SH_PCDISP8BY4 9               /* PC rel 8 bits *4 +ve */
 248 #define R_SH_PCDISP8BY2 10              /* PC rel 8 bits *2 +ve */
 249 #define R_SH_PCDISP8    11              /* 8 bit branch */
 250 #define R_SH_PCDISP     12              /* 12 bit branch */
 251 #define R_SH_IMM32      14              /* 32 bit immediate */
 252 #define R_SH_IMM8       16              /* 8 bit immediate */
 253 #define R_SH_IMAGEBASE  16              /* Windows CE */
 254 #define R_SH_IMM8BY2    17              /* 8 bit immediate *2 */
 255 #define R_SH_IMM8BY4    18              /* 8 bit immediate *4 */
 256 #define R_SH_IMM4       19              /* 4 bit immediate */
 257 #define R_SH_IMM4BY2    20              /* 4 bit immediate *2 */
 258 #define R_SH_IMM4BY4    21              /* 4 bit immediate *4 */
 259 #define R_SH_PCRELIMM8BY2   22          /* PC rel 8 bits *2 unsigned */
 260 #define R_SH_PCRELIMM8BY4   23          /* PC rel 8 bits *4 unsigned */
 261 #define R_SH_IMM16      24              /* 16 bit immediate */
 262
 263 /* The switch table reloc types are used for relaxing.  They are
 264    generated for expressions such as
 265      .word L1 - L2
 266    The r_offset field holds the difference between the reloc address
 267    and L2.  */
 268 #define R_SH_SWITCH8    33              /* 8 bit switch table entry */
 269 #define R_SH_SWITCH16   25              /* 16 bit switch table entry */
 270 #define R_SH_SWITCH32   26              /* 32 bit switch table entry */
 271
 272 /* The USES reloc type is used for relaxing.  The compiler will
 273    generate .uses pseudo-ops when it finds a function call which it
 274    can relax.  The r_offset field of the USES reloc holds the PC
 275    relative offset to the instruction which loads the register used in
 276    the function call.  */
 277 #define R_SH_USES       27              /* .uses pseudo-op */
 278
 279 /* The COUNT reloc type is used for relaxing.  The assembler will
 280    generate COUNT relocs for addresses referred to by the register
 281    loads associated with USES relocs.  The r_offset field of the COUNT
 282    reloc holds the number of times the address is referenced in the
 283    object file.  */
 284 #define R_SH_COUNT      28              /* Count of constant pool uses */
 285
 286 /* The ALIGN reloc type is used for relaxing.  The r_offset field is
 287    the power of two to which subsequent portions of the object file
 288    must be aligned.  */
 289 #define R_SH_ALIGN      29              /* .align pseudo-op */
 290
 291 /* The CODE and DATA reloc types are used for aligning load and store
 292    instructions.  The assembler will generate a CODE reloc before a
 293    block of instructions.  It will generate a DATA reloc before data.
 294    A section should be processed assuming it contains data, unless a
 295    CODE reloc is seen.  The only relevant pieces of information in the
 296    CODE and DATA relocs are the section and the address.  The symbol
 297    and offset are meaningless.  */
 298 #define R_SH_CODE       30              /* start of code */
 299 #define R_SH_DATA       31              /* start of data */
 300
 301 /* The LABEL reloc type is used for aligning load and store
 302    instructions.  The assembler will generate a LABEL reloc for each
 303    label within a block of instructions.  This permits the linker to
 304    avoid swapping instructions which are the targets of branches.  */
 305 #define R_SH_LABEL      32              /* label */
 306
 307 /* NB: R_SH_SWITCH8 is 33 */
 308
 309 #define R_SH_LOOP_START 34
 310 #define R_SH_LOOP_END   35