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/* ECOFF support on Alpha machines.

   coff/ecoff.h must be included before this file.

   Copyright 2001, 2005 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

/********************** FILE HEADER **********************/

struct external_filehdr

{

  unsigned char f_magic[2];     /* magic number                 */

  unsigned char f_nscns[2];     /* number of sections           */

  unsigned char f_timdat[4];    /* time & date stamp            */

  unsigned char f_symptr[8];    /* file pointer to symtab       */

  unsigned char f_nsyms[4];     /* number of symtab entries     */

  unsigned char f_opthdr[2];    /* sizeof(optional hdr)         */

  unsigned char f_flags[2];     /* flags                        */

};

/* Magic numbers are defined in coff/ecoff.h.  */

#define ALPHA_ECOFF_BADMAG(x) \

  ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)

#define ALPHA_ECOFF_COMPRESSEDMAG(x) \

  ((x).f_magic == ALPHA_MAGIC_COMPRESSED)

/* The object type is encoded in the f_flags.  */

#define F_ALPHA_OBJECT_TYPE_MASK        0x3000

#define F_ALPHA_NO_SHARED               0x1000

#define F_ALPHA_SHARABLE                0x2000

#define F_ALPHA_CALL_SHARED             0x3000

#define FILHDR  struct external_filehdr

#define FILHSZ  24

/********************** AOUT "OPTIONAL HEADER" **********************/

typedef struct external_aouthdr

{

  unsigned char magic[2];       /* type of file                         */

  unsigned char vstamp[2];      /* version stamp                        */

  unsigned char bldrev[2];      /* ?? */

  unsigned char padding[2];     /* pad to quadword boundary             */

  unsigned char tsize[8];       /* text size in bytes                   */

  unsigned char dsize[8];       /* initialized data "  "                */

  unsigned char bsize[8];       /* uninitialized data "   "             */

  unsigned char entry[8];       /* entry pt.                            */

  unsigned char text_start[8];  /* base of text used for this file */

  unsigned char data_start[8];  /* base of data used for this file */

  unsigned char bss_start[8];   /* base of bss used for this file */

  unsigned char gprmask[4];     /* bitmask of general registers used */

  unsigned char fprmask[4];     /* bitmask of floating point registers used */

  unsigned char gp_value[8];    /* value for gp register */

} AOUTHDR;

/* compute size of a header */

#define AOUTSZ 80

#define AOUTHDRSZ 80

/********************** SECTION HEADER **********************/

struct external_scnhdr

{

  unsigned char s_name[8];      /* section name                 */

  unsigned char s_paddr[8];     /* physical address, aliased s_nlib */

  unsigned char s_vaddr[8];     /* virtual address              */

  unsigned char s_size[8];      /* section size                 */

  unsigned char s_scnptr[8];    /* file ptr to raw data for section */

  unsigned char s_relptr[8];    /* file ptr to relocation       */

  unsigned char s_lnnoptr[8];   /* file ptr to line numbers     */

  unsigned char s_nreloc[2];    /* number of relocation entries */

  unsigned char s_nlnno[2];     /* number of line number entries*/

  unsigned char s_flags[4];     /* flags                        */

};

#define SCNHDR  struct external_scnhdr

#define SCNHSZ  64

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

struct external_reloc

{

  unsigned char r_vaddr[8];

  unsigned char r_symndx[4];

  unsigned char r_bits[4];

};

#define RELOC struct external_reloc

#define RELSZ 16

/* Constants to unpack the r_bits field.  The Alpha seems to always be

   little endian, so I haven't bothered to define big endian variants

   of these.  */

#define RELOC_BITS0_TYPE_LITTLE                 0xff

#define RELOC_BITS0_TYPE_SH_LITTLE              0

#define RELOC_BITS1_EXTERN_LITTLE               0x01

#define RELOC_BITS1_OFFSET_LITTLE               0x7e

#define RELOC_BITS1_OFFSET_SH_LITTLE            1

#define RELOC_BITS1_RESERVED_LITTLE             0x80

#define RELOC_BITS1_RESERVED_SH_LITTLE          7

#define RELOC_BITS2_RESERVED_LITTLE             0xff

#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE     1

#define RELOC_BITS3_RESERVED_LITTLE             0x03

#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE     9

#define RELOC_BITS3_SIZE_LITTLE                 0xfc

#define RELOC_BITS3_SIZE_SH_LITTLE              2

/* The r_type field in a reloc is one of the following values.  */

#define ALPHA_R_IGNORE          0

#define ALPHA_R_REFLONG         1

#define ALPHA_R_REFQUAD         2

#define ALPHA_R_GPREL32         3

#define ALPHA_R_LITERAL         4

#define ALPHA_R_LITUSE          5

#define ALPHA_R_GPDISP          6

#define ALPHA_R_BRADDR          7

#define ALPHA_R_HINT            8

#define ALPHA_R_SREL16          9

#define ALPHA_R_SREL32         10

#define ALPHA_R_SREL64         11

#define ALPHA_R_OP_PUSH        12

#define ALPHA_R_OP_STORE       13

#define ALPHA_R_OP_PSUB        14

#define ALPHA_R_OP_PRSHIFT     15

#define ALPHA_R_GPVALUE        16

#define ALPHA_R_GPRELHIGH      17

#define ALPHA_R_GPRELLOW       18

#define ALPHA_R_IMMED          19

/* Overloaded reloc value used by Net- and OpenBSD.  */

#define ALPHA_R_LITERALSLEAZY  17

/* With ALPHA_R_LITUSE, the r_size field is one of the following values.  */

#define ALPHA_R_LU_BASE         1

#define ALPHA_R_LU_BYTOFF       2

#define ALPHA_R_LU_JSR          3

/* With ALPHA_R_IMMED, the r_size field is one of the following values.  */

#define ALPHA_R_IMMED_GP_16     1

#define ALPHA_R_IMMED_GP_HI32   2

#define ALPHA_R_IMMED_SCN_HI32  3

#define ALPHA_R_IMMED_BR_HI32   4

#define ALPHA_R_IMMED_LO32      5

/********************** SYMBOLIC INFORMATION **********************/

/* Written by John Gilmore.  */

/* ECOFF uses COFF-like section structures, but its own symbol format.

   This file defines the symbol format in fields whose size and alignment

   will not vary on different host systems.  */

/* File header as a set of bytes */

struct hdr_ext

{

        unsigned char   h_magic[2];

        unsigned char   h_vstamp[2];

        unsigned char   h_ilineMax[4];

        unsigned char   h_idnMax[4];

        unsigned char   h_ipdMax[4];

        unsigned char   h_isymMax[4];

        unsigned char   h_ioptMax[4];

        unsigned char   h_iauxMax[4];

        unsigned char   h_issMax[4];

        unsigned char   h_issExtMax[4];

        unsigned char   h_ifdMax[4];

        unsigned char   h_crfd[4];

        unsigned char   h_iextMax[4];

        unsigned char   h_cbLine[8];

        unsigned char   h_cbLineOffset[8];

        unsigned char   h_cbDnOffset[8];

        unsigned char   h_cbPdOffset[8];

        unsigned char   h_cbSymOffset[8];

        unsigned char   h_cbOptOffset[8];

        unsigned char   h_cbAuxOffset[8];

        unsigned char   h_cbSsOffset[8];

        unsigned char   h_cbSsExtOffset[8];

        unsigned char   h_cbFdOffset[8];

        unsigned char   h_cbRfdOffset[8];

        unsigned char   h_cbExtOffset[8];

};

/* File descriptor external record */

struct fdr_ext

{

        unsigned char   f_adr[8];

        unsigned char   f_cbLineOffset[8];

        unsigned char   f_cbLine[8];

        unsigned char   f_cbSs[8];

        unsigned char   f_rss[4];

        unsigned char   f_issBase[4];

        unsigned char   f_isymBase[4];

        unsigned char   f_csym[4];

        unsigned char   f_ilineBase[4];

        unsigned char   f_cline[4];

        unsigned char   f_ioptBase[4];

        unsigned char   f_copt[4];

        unsigned char   f_ipdFirst[4];

        unsigned char   f_cpd[4];

        unsigned char   f_iauxBase[4];

        unsigned char   f_caux[4];

        unsigned char   f_rfdBase[4];

        unsigned char   f_crfd[4];

        unsigned char   f_bits1[1];

        unsigned char   f_bits2[3];

        unsigned char   f_padding[4];

};

#define FDR_BITS1_LANG_BIG              0xF8

#define FDR_BITS1_LANG_SH_BIG           3

#define FDR_BITS1_LANG_LITTLE           0x1F

#define FDR_BITS1_LANG_SH_LITTLE        0

#define FDR_BITS1_FMERGE_BIG            0x04

#define FDR_BITS1_FMERGE_LITTLE         0x20

#define FDR_BITS1_FREADIN_BIG           0x02

#define FDR_BITS1_FREADIN_LITTLE        0x40

#define FDR_BITS1_FBIGENDIAN_BIG        0x01

#define FDR_BITS1_FBIGENDIAN_LITTLE     0x80

#define FDR_BITS2_GLEVEL_BIG            0xC0

#define FDR_BITS2_GLEVEL_SH_BIG         6

#define FDR_BITS2_GLEVEL_LITTLE         0x03

#define FDR_BITS2_GLEVEL_SH_LITTLE      0

/* We ignore the `reserved' field in bits2. */

/* Procedure descriptor external record */

struct pdr_ext {

        unsigned char   p_adr[8];

        unsigned char   p_cbLineOffset[8];

        unsigned char   p_isym[4];

        unsigned char   p_iline[4];

        unsigned char   p_regmask[4];

        unsigned char   p_regoffset[4];

        unsigned char   p_iopt[4];

        unsigned char   p_fregmask[4];

        unsigned char   p_fregoffset[4];

        unsigned char   p_frameoffset[4];

        unsigned char   p_lnLow[4];

        unsigned char   p_lnHigh[4];

        unsigned char   p_gp_prologue[1];

        unsigned char   p_bits1[1];

        unsigned char   p_bits2[1];

        unsigned char   p_localoff[1];

        unsigned char   p_framereg[2];

        unsigned char   p_pcreg[2];

};

#define PDR_BITS1_GP_USED_BIG           0x80

#define PDR_BITS1_REG_FRAME_BIG         0x40

#define PDR_BITS1_PROF_BIG              0x20

#define PDR_BITS1_RESERVED_BIG          0x1f

#define PDR_BITS1_RESERVED_SH_LEFT_BIG  8

#define PDR_BITS2_RESERVED_BIG          0xff

#define PDR_BITS2_RESERVED_SH_BIG       0

#define PDR_BITS1_GP_USED_LITTLE        0x01

#define PDR_BITS1_REG_FRAME_LITTLE      0x02

#define PDR_BITS1_PROF_LITTLE           0x04

#define PDR_BITS1_RESERVED_LITTLE       0xf8

#define PDR_BITS1_RESERVED_SH_LITTLE    3

#define PDR_BITS2_RESERVED_LITTLE       0xff

#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5

/* Line numbers */

struct line_ext {

        unsigned char   l_line[4];

};

/* Symbol external record */

struct sym_ext {

        unsigned char   s_value[8];

        unsigned char   s_iss[4];

        unsigned char   s_bits1[1];

        unsigned char   s_bits2[1];

        unsigned char   s_bits3[1];

        unsigned char   s_bits4[1];

};

#define SYM_BITS1_ST_BIG                0xFC

#define SYM_BITS1_ST_SH_BIG             2

#define SYM_BITS1_ST_LITTLE             0x3F

#define SYM_BITS1_ST_SH_LITTLE          0

#define SYM_BITS1_SC_BIG                0x03

#define SYM_BITS1_SC_SH_LEFT_BIG        3

#define SYM_BITS1_SC_LITTLE             0xC0

#define SYM_BITS1_SC_SH_LITTLE          6

#define SYM_BITS2_SC_BIG                0xE0

#define SYM_BITS2_SC_SH_BIG             5

#define SYM_BITS2_SC_LITTLE             0x07

#define SYM_BITS2_SC_SH_LEFT_LITTLE     2

#define SYM_BITS2_RESERVED_BIG          0x10

#define SYM_BITS2_RESERVED_LITTLE       0x08

#define SYM_BITS2_INDEX_BIG             0x0F

#define SYM_BITS2_INDEX_SH_LEFT_BIG     16

#define SYM_BITS2_INDEX_LITTLE          0xF0

#define SYM_BITS2_INDEX_SH_LITTLE       4

#define SYM_BITS3_INDEX_SH_LEFT_BIG     8

#define SYM_BITS3_INDEX_SH_LEFT_LITTLE  4

#define SYM_BITS4_INDEX_SH_LEFT_BIG     0

#define SYM_BITS4_INDEX_SH_LEFT_LITTLE  12

/* External symbol external record */

struct ext_ext {

        struct  sym_ext es_asym;

        unsigned char   es_bits1[1];

        unsigned char   es_bits2[3];

        unsigned char   es_ifd[4];

};

#define EXT_BITS1_JMPTBL_BIG            0x80

#define EXT_BITS1_JMPTBL_LITTLE         0x01

#define EXT_BITS1_COBOL_MAIN_BIG        0x40

#define EXT_BITS1_COBOL_MAIN_LITTLE     0x02

#define EXT_BITS1_WEAKEXT_BIG           0x20

#define EXT_BITS1_WEAKEXT_LITTLE        0x04

/* Dense numbers external record */

struct dnr_ext {

        unsigned char   d_rfd[4];

        unsigned char   d_index[4];

};

/* Relative file descriptor */

struct rfd_ext {

  unsigned char rfd[4];

};

/* Optimizer symbol external record */

struct opt_ext {

  unsigned char o_bits1[1];

  unsigned char o_bits2[1];

  unsigned char o_bits3[1];

  unsigned char o_bits4[1];

  struct rndx_ext o_rndx;

  unsigned char o_offset[4];

};

#define OPT_BITS2_VALUE_SH_LEFT_BIG     16

#define OPT_BITS2_VALUE_SH_LEFT_LITTLE  0

#define OPT_BITS3_VALUE_SH_LEFT_BIG     8

#define OPT_BITS3_VALUE_SH_LEFT_LITTLE  8

#define OPT_BITS4_VALUE_SH_LEFT_BIG     0

#define OPT_BITS4_VALUE_SH_LEFT_LITTLE  16