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      1 /* coff information for Renesas SH
      2 
      3    Copyright (C) 2000-2014 Free Software Foundation, Inc.
      4 
      5    This program is free software; you can redistribute it and/or modify
      6    it under the terms of the GNU General Public License as published by
      7    the Free Software Foundation; either version 3 of the License, or
      8    (at your option) any later version.
      9 
     10    This program is distributed in the hope that it will be useful,
     11    but WITHOUT ANY WARRANTY; without even the implied warranty of
     12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13    GNU General Public License for more details.
     14 
     15    You should have received a copy of the GNU General Public License
     16    along with this program; if not, write to the Free Software
     17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     18    MA 02110-1301, USA.  */
     19 
     20 #ifdef COFF_WITH_PE
     21 #define L_LNNO_SIZE 2
     22 #else
     23 #define L_LNNO_SIZE 4
     24 #endif
     25 #define INCLUDE_COMDAT_FIELDS_IN_AUXENT
     26 #include "coff/external.h"
     27 
     28 #define	SH_ARCH_MAGIC_BIG	0x0500
     29 #define	SH_ARCH_MAGIC_LITTLE	0x0550  /* Little endian SH */
     30 #define SH_ARCH_MAGIC_WINCE	0x01a2  /* Windows CE - little endian */
     31 #define SH_PE_MAGIC		0x010b
     32 
     33 #define SHBADMAG(x) \
     34  (((x).f_magic != SH_ARCH_MAGIC_BIG) && \
     35   ((x).f_magic != SH_ARCH_MAGIC_WINCE) && \
     36   ((x).f_magic != SH_ARCH_MAGIC_LITTLE))
     37 
     38 /* Define some NT default values.  */
     39 /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
     40 #define NT_SECTION_ALIGNMENT 0x1000
     41 #define NT_FILE_ALIGNMENT    0x200
     42 #define NT_DEF_RESERVE       0x100000
     43 #define NT_DEF_COMMIT        0x1000
     44 
     45 /********************** RELOCATION DIRECTIVES **********************/
     46 
     47 /* The external reloc has an offset field, because some of the reloc
     48    types on the h8 don't have room in the instruction for the entire
     49    offset - eg the strange jump and high page addressing modes.  */
     50 
     51 #ifndef COFF_WITH_PE
     52 struct external_reloc
     53 {
     54   char r_vaddr[4];
     55   char r_symndx[4];
     56   char r_offset[4];
     57   char r_type[2];
     58   char r_stuff[2];
     59 };
     60 #else
     61 struct external_reloc
     62 {
     63   char r_vaddr[4];
     64   char r_symndx[4];
     65   char r_type[2];
     66 };
     67 #endif
     68 
     69 #define RELOC struct external_reloc
     70 #ifdef COFF_WITH_PE
     71 #define RELSZ 10
     72 #else
     73 #define RELSZ 16
     74 #endif
     75 
     76 /* SH relocation types.  Not all of these are actually used.  */
     77 
     78 #define R_SH_UNUSED	0		/* only used internally */
     79 #define R_SH_IMM32CE	2		/* 32 bit immediate for WinCE */
     80 #define R_SH_PCREL8 	3		/*  8 bit pcrel 	*/
     81 #define R_SH_PCREL16 	4		/* 16 bit pcrel 	*/
     82 #define R_SH_HIGH8  	5		/* high 8 bits of 24 bit address */
     83 #define R_SH_LOW16 	7		/* low 16 bits of 24 bit immediate */
     84 #define R_SH_IMM24	6		/* 24 bit immediate */
     85 #define R_SH_PCDISP8BY4	9  		/* PC rel 8 bits *4 +ve */
     86 #define R_SH_PCDISP8BY2	10  		/* PC rel 8 bits *2 +ve */
     87 #define R_SH_PCDISP8    11  		/* 8 bit branch */
     88 #define R_SH_PCDISP     12  		/* 12 bit branch */
     89 #define R_SH_IMM32      14    		/* 32 bit immediate */
     90 #define R_SH_IMM8   	16		/* 8 bit immediate */
     91 #define R_SH_IMAGEBASE	16		/* Windows CE */
     92 #define R_SH_IMM8BY2    17		/* 8 bit immediate *2 */
     93 #define R_SH_IMM8BY4    18		/* 8 bit immediate *4 */
     94 #define R_SH_IMM4   	19		/* 4 bit immediate */
     95 #define R_SH_IMM4BY2    20		/* 4 bit immediate *2 */
     96 #define R_SH_IMM4BY4    21		/* 4 bit immediate *4 */
     97 #define R_SH_PCRELIMM8BY2   22		/* PC rel 8 bits *2 unsigned */
     98 #define R_SH_PCRELIMM8BY4   23		/* PC rel 8 bits *4 unsigned */
     99 #define R_SH_IMM16      24    		/* 16 bit immediate */
    100 
    101 /* The switch table reloc types are used for relaxing.  They are
    102    generated for expressions such as
    103      .word L1 - L2
    104    The r_offset field holds the difference between the reloc address
    105    and L2.  */
    106 #define R_SH_SWITCH8	33		/* 8 bit switch table entry */
    107 #define R_SH_SWITCH16	25		/* 16 bit switch table entry */
    108 #define R_SH_SWITCH32	26		/* 32 bit switch table entry */
    109 
    110 /* The USES reloc type is used for relaxing.  The compiler will
    111    generate .uses pseudo-ops when it finds a function call which it
    112    can relax.  The r_offset field of the USES reloc holds the PC
    113    relative offset to the instruction which loads the register used in
    114    the function call.  */
    115 #define R_SH_USES	27		/* .uses pseudo-op */
    116 
    117 /* The COUNT reloc type is used for relaxing.  The assembler will
    118    generate COUNT relocs for addresses referred to by the register
    119    loads associated with USES relocs.  The r_offset field of the COUNT
    120    reloc holds the number of times the address is referenced in the
    121    object file.  */
    122 #define R_SH_COUNT	28		/* Count of constant pool uses */
    123 
    124 /* The ALIGN reloc type is used for relaxing.  The r_offset field is
    125    the power of two to which subsequent portions of the object file
    126    must be aligned.  */
    127 #define R_SH_ALIGN	29		/* .align pseudo-op */
    128 
    129 /* The CODE and DATA reloc types are used for aligning load and store
    130    instructions.  The assembler will generate a CODE reloc before a
    131    block of instructions.  It will generate a DATA reloc before data.
    132    A section should be processed assuming it contains data, unless a
    133    CODE reloc is seen.  The only relevant pieces of information in the
    134    CODE and DATA relocs are the section and the address.  The symbol
    135    and offset are meaningless.  */
    136 #define R_SH_CODE	30		/* start of code */
    137 #define R_SH_DATA	31		/* start of data */
    138 
    139 /* The LABEL reloc type is used for aligning load and store
    140    instructions.  The assembler will generate a LABEL reloc for each
    141    label within a block of instructions.  This permits the linker to
    142    avoid swapping instructions which are the targets of branches.  */
    143 #define R_SH_LABEL	32		/* label */
    144 
    145 /* NB: R_SH_SWITCH8 is 33 */
    146 
    147 #define R_SH_LOOP_START	34
    148 #define R_SH_LOOP_END	35
    149