internal.h

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struct internal_syment
{
  union
  {
    char _n_name[SYMNMLEN];	/* old COFF version	*/
    struct
    {
      long _n_zeroes;		/* new == 0		*/
      long _n_offset;		/* offset into string table */
    }      _n_n;
    char *_n_nptr[2];		/* allows for overlaying	*/
  }     _n;
  bfd_vma n_value;			/* value of symbol		*/
  short n_scnum;		/* section number		*/
  unsigned short n_flags;	/* copy of flags from filhdr	*/
  unsigned short n_type;	/* type and derived type	*/
  unsigned char n_sclass;	/* storage class		*/
  unsigned char n_numaux;	/* number of aux. entries	*/
};

#define n_name		_n._n_name
#define n_zeroes	_n._n_n._n_zeroes
#define n_offset	_n._n_n._n_offset

/* Relocatable symbols have number of the section in which they are defined,
   or one of the following:  */

#define N_UNDEF	((short)0)	/* undefined symbol */
#define N_ABS	((short)-1)	/* value of symbol is absolute */
#define N_DEBUG	((short)-2)	/* debugging symbol -- value is meaningless */
#define N_TV	((short)-3)	/* indicates symbol needs preload transfer vector */
#define P_TV	((short)-4)	/* indicates symbol needs postload transfer vector*/

/* Type of a symbol, in low N bits of the word.  */

#define T_NULL		0
#define T_VOID		1	/* function argument (only used by compiler) */
#define T_CHAR		2	/* character		*/
#define T_SHORT		3	/* short integer	*/
#define T_INT		4	/* integer		*/
#define T_LONG		5	/* long integer		*/
#define T_FLOAT		6	/* floating point	*/
#define T_DOUBLE	7	/* double word		*/
#define T_STRUCT	8	/* structure 		*/
#define T_UNION		9	/* union 		*/
#define T_ENUM		10	/* enumeration 		*/
#define T_MOE		11	/* member of enumeration*/
#define T_UCHAR		12	/* unsigned character	*/
#define T_USHORT	13	/* unsigned short	*/
#define T_UINT		14	/* unsigned integer	*/
#define T_ULONG		15	/* unsigned long	*/
#define T_LNGDBL	16	/* long double		*/

/* Derived types, in n_type.  */

#define DT_NON		(0)	/* no derived type */
#define DT_PTR		(1)	/* pointer */
#define DT_FCN		(2)	/* function */
#define DT_ARY		(3)	/* array */

#define BTYPE(x)	((x) & N_BTMASK)
#define DTYPE(x)	(((x) & N_TMASK) >> N_BTSHFT)

#define ISPTR(x) \
  (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_PTR << N_BTSHFT))
#define ISFCN(x) \
  (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_FCN << N_BTSHFT))
#define ISARY(x) \
  (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_ARY << N_BTSHFT))
#define ISTAG(x) \
  ((x) == C_STRTAG || (x) == C_UNTAG || (x) == C_ENTAG)
#define DECREF(x) \
  ((((x) >> N_TSHIFT) & ~ N_BTMASK) | ((x) & N_BTMASK))

union internal_auxent
{
  struct
  {

    union
    {
      long l;			/* str, un, or enum tag indx */
      struct coff_ptr_struct *p;
    }     x_tagndx;

    union
    {
      struct
      {
	unsigned short x_lnno;	/* declaration line number */
	unsigned short x_size;	/* str/union/array size */
      }      x_lnsz;
      long x_fsize;		/* size of function */
    }     x_misc;

    union
    {
      struct
      {				/* if ISFCN, tag, or .bb */
	bfd_signed_vma x_lnnoptr;		/* ptr to fcn line # */
	union
	{			/* entry ndx past block end */
	  long l;
	  struct coff_ptr_struct *p;
	}     x_endndx;
      }      x_fcn;

      struct
      {				/* if ISARY, up to 4 dimen. */
	unsigned short x_dimen[DIMNUM];
      }      x_ary;
    }     x_fcnary;

    unsigned short x_tvndx;	/* tv index */
  }      x_sym;

  union
  {
    char x_fname[FILNMLEN];
    struct
    {
      long x_zeroes;
      long x_offset;
    }      x_n;
  }     x_file;

  struct
  {
    long x_scnlen;		/* section length */
    unsigned short x_nreloc;	/* # relocation entries */
    unsigned short x_nlinno;	/* # line numbers */
    unsigned long x_checksum;	/* section COMDAT checksum for PE */
    unsigned short x_associated; /* COMDAT associated section index for PE */
    unsigned char x_comdat;	/* COMDAT selection number for PE */
  }      x_scn;

  struct
  {
    long x_tvfill;		/* tv fill value */
    unsigned short x_tvlen;	/* length of .tv */
    unsigned short x_tvran[2];	/* tv range */
  }      x_tv;			/* info about .tv section (in auxent of symbol .tv)) */

  /******************************************
   * RS/6000-specific auxent - last auxent for every external symbol
   ******************************************/
  struct
  {
    union
      {				/* csect length or enclosing csect */
	bfd_signed_vma l;
	struct coff_ptr_struct *p;
      } x_scnlen;
    long x_parmhash;		/* parm type hash index */
    unsigned short x_snhash;	/* sect num with parm hash */
    unsigned char x_smtyp;	/* symbol align and type */
    /* 0-4 - Log 2 of alignment */
    /* 5-7 - symbol type */
    unsigned char x_smclas;	/* storage mapping class */
    long x_stab;		/* dbx stab info index */
    unsigned short x_snstab;	/* sect num with dbx stab */
  }      x_csect;		/* csect definition information */

/* x_smtyp values:  */

#define	SMTYP_ALIGN(x)	((x) >> 3)	/* log2 of alignment */
#define	SMTYP_SMTYP(x)	((x) & 0x7)	/* symbol type */
/* Symbol type values:  */
#define	XTY_ER	0		/* External reference */
#define	XTY_SD	1		/* Csect definition */
#define	XTY_LD	2		/* Label definition */
#define XTY_CM	3		/* .BSS */
#define	XTY_EM	4		/* Error message */
#define	XTY_US	5		/* "Reserved for internal use" */

/* x_smclas values:  */

#define	XMC_PR	0		/* Read-only program code */
#define	XMC_RO	1		/* Read-only constant */
#define	XMC_DB	2		/* Read-only debug dictionary table */
#define	XMC_TC	3		/* Read-write general TOC entry */
#define	XMC_UA	4		/* Read-write unclassified */
#define	XMC_RW	5		/* Read-write data */
#define	XMC_GL	6		/* Read-only global linkage */
#define	XMC_XO	7		/* Read-only extended operation */
#define	XMC_SV	8		/* Read-only supervisor call */
#define	XMC_BS	9		/* Read-write BSS */
#define	XMC_DS	10		/* Read-write descriptor csect */
#define	XMC_UC	11		/* Read-write unnamed Fortran common */
#define	XMC_TI	12		/* Read-only traceback index csect */
#define	XMC_TB	13		/* Read-only traceback table csect */
/* 		14	??? */
#define	XMC_TC0	15		/* Read-write TOC anchor */
#define XMC_TD	16		/* Read-write data in TOC */

  /******************************************
   *  I960-specific *2nd* aux. entry formats
   ******************************************/
  struct
  {
    /* This is a very old typo that keeps getting propagated. */
#define x_stdindx x_stindx
    long x_stindx;		/* sys. table entry */
  }      x_sc;			/* system call entry */

  struct
  {
    unsigned long x_balntry;	/* BAL entry point */
  }      x_bal;			/* BAL-callable function */

  struct
  {
    unsigned long x_timestamp;	/* time stamp */
    char x_idstring[20];	/* producer identity string */
  }      x_ident;		/* Producer ident info */

};

/********************** RELOCATION DIRECTIVES **********************/

struct internal_reloc
{
  bfd_vma r_vaddr;		/* Virtual address of reference */
  long r_symndx;		/* Index into symbol table	*/
  unsigned short r_type;	/* Relocation type		*/
  unsigned char r_size;		/* Used by RS/6000 and ECOFF	*/
  unsigned char r_extern;	/* Used by ECOFF		*/
  unsigned long r_offset;	/* Used by Alpha ECOFF, SPARC, others */
};

#define R_DIR16 	 1
#define R_REL24          5
#define R_DIR32 	 6
#define R_IMAGEBASE	 7
#define R_SECREL32	11
#define R_RELBYTE	15
#define R_RELWORD	16
#define R_RELLONG	17
#define R_PCRBYTE	18
#define R_PCRWORD	19
#define R_PCRLONG	20
#define R_PCR24         21
#define R_IPRSHORT	24
#define R_IPRLONG	26
#define R_GETSEG	29
#define R_GETPA 	30
#define R_TAGWORD	31
#define R_JUMPTARG	32	/* strange 29k 00xx00xx reloc */
#define R_PARTLS16      32
#define R_PARTMS8       33

#define R_PCR16L       128
#define R_PCR26L       129
#define R_VRT16        130
#define R_HVRT16       131
#define R_LVRT16       132
#define R_VRT32        133


/* This reloc identifies mov.b instructions with a 16bit absolute
   address.  The linker tries to turn insns with this reloc into
   an absolute 8-bit address.  */
#define R_MOV16B1    	0x41

/* This reloc identifies mov.b instructions which had a 16bit
   absolute address which have been shortened into a 8-bit
   absolute address.  */
#define R_MOV16B2 	0x42

/* This reloc identifies jmp insns with a 16bit target address;
   the linker tries to turn these insns into bra insns with
   an 8bit pc-relative target.  */
#define R_JMP1     	0x43

/* This reloc identifies a bra with an 8-bit pc-relative
   target that was formerly a jmp insn with a 16bit target.  */
#define R_JMP2 		0x44

/* ??? */
#define R_RELLONG_NEG  	0x45

/* This reloc identifies jmp insns with a 24bit target address;
   the linker tries to turn these insns into bra insns with
   an 8bit pc-relative target.  */
#define R_JMPL1     	0x46

/* This reloc identifies a bra with an 8-bit pc-relative
   target that was formerly a jmp insn with a 24bit target.  */
#define R_JMPL2		0x47

/* This reloc identifies mov.b instructions with a 24bit absolute
   address.  The linker tries to turn insns with this reloc into
   an absolute 8-bit address.  */

#define R_MOV24B1    	0x48

/* This reloc identifies mov.b instructions which had a 24bit
   absolute address which have been shortened into a 8-bit
   absolute address.  */
#define R_MOV24B2 	0x49

/* An h8300 memory indirect jump/call.  Forces the address of the jump/call
   target into the function vector (in page zero), and the address of the
   vector entry to be placed in the jump/call instruction.  */
#define R_MEM_INDIRECT	0x4a

/* This reloc identifies a 16bit pc-relative branch target which was
   shortened into an 8bit pc-relative branch target.  */
#define R_PCRWORD_B	0x4b

/* This reloc identifies mov.[wl] instructions with a 32/24 bit
   absolute address; the linker may turn this into a mov.[wl]
   insn with a 16bit absolute address.  */
#define R_MOVL1    	0x4c

/* This reloc identifies mov.[wl] insns which formerly had
   a 32/24bit absolute address and now have a 16bit absolute address.  */
#define R_MOVL2 	0x4d

/* This reloc identifies a bCC:8 which will have it's condition
   inverted and its target redirected to the target of the branch
   in the following insn.  */
#define R_BCC_INV	0x4e

/* This reloc identifies a jmp instruction that has been deleted.  */
#define R_JMP_DEL	0x4f

/* Z8k modes */
#define R_IMM16   0x01		/* 16 bit abs */
#define R_JR	  0x02		/* jr  8 bit disp */
#define R_IMM4L   0x23		/* low nibble */
#define R_IMM8    0x22		/* 8 bit abs */
#define R_IMM32   R_RELLONG	/* 32 bit abs */
#define R_CALL    R_DA		/* Absolute address which could be a callr */
#define R_JP	  R_DA		/* Absolute address which could be a jp */
#define R_REL16   0x04		/* 16 bit PC rel */
#define R_CALLR	  0x05		/* callr 12 bit disp */
#define R_SEG     0x10		/* set if in segmented mode */
#define R_IMM4H   0x24		/* high nibble */
#define R_DISP7   0x25          /* djnz displacement */

/* H8500 modes */

#define R_H8500_IMM8  	1		/*  8 bit immediate 	*/
#define R_H8500_IMM16 	2		/* 16 bit immediate	*/
#define R_H8500_PCREL8 	3		/*  8 bit pcrel 	*/
#define R_H8500_PCREL16 4		/* 16 bit pcrel 	*/
#define R_H8500_HIGH8  	5		/* high 8 bits of 24 bit address */
#define R_H8500_LOW16 	7		/* low 16 bits of 24 bit immediate */
#define R_H8500_IMM24	6		/* 24 bit immediate */
#define R_H8500_IMM32   8               /* 32 bit immediate */
#define R_H8500_HIGH16  9		/* high 16 bits of 32 bit immediate */

/* W65 modes */

#define R_W65_ABS8	1  /* addr & 0xff 		*/
#define R_W65_ABS16	2  /* addr & 0xffff 		*/
#define R_W65_ABS24	3  /* addr & 0xffffff 		*/

#define R_W65_ABS8S8    4  /* (addr >> 8) & 0xff 	*/
#define R_W65_ABS8S16   5  /* (addr >> 16) & 0xff 	*/

#define R_W65_ABS16S8   6  /* (addr >> 8) & 0ffff 	*/
#define R_W65_ABS16S16  7  /* (addr >> 16) & 0ffff 	*/

#define R_W65_PCR8	8
#define R_W65_PCR16	9

#define R_W65_DP       10  /* direct page 8 bits only   */

#endif /* GNU_COFF_INTERNAL_H */