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#ifndef _LINUX_SOM_H

#define _LINUX_SOM_H

/* File format definition for SOM executables / shared libraries */

/* we need struct timespec */

#include <linux/time.h>

#define SOM_PAGESIZE 4096

/* this is the SOM header */

struct som_hdr {

        short           system_id;              /* magic number - system */

        short           a_magic;                /* magic number - file type */

        unsigned int    version_id;             /* versiod ID: YYMMDDHH */

        struct timespec file_time;              /* system clock */

        unsigned int    entry_space;            /* space for entry point */

        unsigned int    entry_subspace;         /* subspace for entry point */

        unsigned int    entry_offset;           /* offset of entry point */

        unsigned int    aux_header_location;    /* auxiliary header location */

        unsigned int    aux_header_size;        /* auxiliary header size */

        unsigned int    som_length;             /* length of entire SOM */

        unsigned int    presumed_dp;            /* compiler's DP value */

        unsigned int    space_location;         /* space dictionary location */

        unsigned int    space_total;            /* number of space entries */

        unsigned int    subspace_location;      /* subspace entries location */

        unsigned int    subspace_total;         /* number of subspace entries */

        unsigned int    loader_fixup_location;  /* MPE/iX loader fixup */

        unsigned int    loader_fixup_total;     /* number of fixup records */

        unsigned int    space_strings_location; /* (sub)space names */

        unsigned int    space_strings_size;     /* size of strings area */

        unsigned int    init_array_location;    /* reserved */

        unsigned int    init_array_total;       /* reserved */

        unsigned int    compiler_location;      /* module dictionary */

        unsigned int    compiler_total;         /* number of modules */

        unsigned int    symbol_location;        /* symbol dictionary */

        unsigned int    symbol_total;           /* number of symbols */

        unsigned int    fixup_request_location; /* fixup requests */

        unsigned int    fixup_request_total;    /* number of fixup requests */

        unsigned int    symbol_strings_location;/* module & symbol names area */

        unsigned int    symbol_strings_size;    /* size of strings area */

        unsigned int    unloadable_sp_location; /* unloadable spaces location */

        unsigned int    unloadable_sp_size;     /* size of data */

        unsigned int    checksum;

};

/* values for system_id */

#define SOM_SID_PARISC_1_0      0x020b

#define SOM_SID_PARISC_1_1      0x0210

#define SOM_SID_PARISC_2_0      0x0214

/* values for a_magic */

#define SOM_LIB_EXEC            0x0104

#define SOM_RELOCATABLE         0x0106

#define SOM_EXEC_NONSHARE       0x0107

#define SOM_EXEC_SHARE          0x0108

#define SOM_EXEC_DEMAND         0x010B

#define SOM_LIB_DYN             0x010D

#define SOM_LIB_SHARE           0x010E

#define SOM_LIB_RELOC           0x0619

/* values for version_id.  Decimal not hex, yes.  Grr. */

#define SOM_ID_OLD              85082112

#define SOM_ID_NEW              87102412

struct aux_id {

        unsigned int    mandatory :1;   /* the linker must understand this */

        unsigned int    copy      :1;   /* Must be copied by the linker */

        unsigned int    append    :1;   /* Must be merged by the linker */

        unsigned int    ignore    :1;   /* Discard section if unknown */

        unsigned int    reserved  :12;

        unsigned int    type      :16;  /* Header type */

        unsigned int    length;         /* length of _following_ data */

};

/* The Exec Auxiliary Header.  Called The HP-UX Header within HP apparently. */

struct som_exec_auxhdr {

        struct aux_id   som_auxhdr;

        int             exec_tsize;     /* Text size in bytes */

        int             exec_tmem;      /* Address to load text at */

        int             exec_tfile;     /* Location of text in file */

        int             exec_dsize;     /* Data size in bytes */

        int             exec_dmem;      /* Address to load data at */

        int             exec_dfile;     /* Location of data in file */

        int             exec_bsize;     /* Uninitialised data (bss) */

        int             exec_entry;     /* Address to start executing */

        int             exec_flags;     /* loader flags */

        int             exec_bfill;     /* initialisation value for bss */

};

/* Oh, the things people do to avoid casts.  Shame it'll break with gcc's

 * new aliasing rules really.

 */

union name_pt {

        char *          n_name;

        unsigned int    n_strx;

};

/* The Space Dictionary */

struct space_dictionary_record {

        union name_pt   name;                   /* index to subspace name */

        unsigned int    is_loadable     :1;     /* loadable */

        unsigned int    is_defined      :1;     /* defined within file */

        unsigned int    is_private      :1;     /* not sharable */

        unsigned int    has_intermediate_code :1; /* contains intermediate code */

        unsigned int    is_tspecific    :1;     /* thread specific */

        unsigned int    reserved        :11;    /* for future expansion */

        unsigned int    sort_key        :8;     /* for linker */

        unsigned int    reserved2       :8;     /* for future expansion */

        int             space_number;           /* index */

        int             subspace_index;         /* index into subspace dict */

        unsigned int    subspace_quantity;      /* number of subspaces */

        int             loader_fix_index;       /* for loader */

        unsigned int    loader_fix_quantity;    /* for loader */

        int             init_pointer_index;     /* data pointer array index */

        unsigned int    init_pointer_quantity;  /* number of data pointers */

};

/* The Subspace Dictionary */

struct subspace_dictionary_record {

        int             space_index;

        unsigned int    access_control_bits :7;

        unsigned int    memory_resident :1;

        unsigned int    dup_common      :1;

        unsigned int    is_common       :1;

        unsigned int    quadrant        :2;

        unsigned int    initially_frozen :1;

        unsigned int    is_first        :1;

        unsigned int    code_only       :1;

        unsigned int    sort_key        :8;

        unsigned int    replicate_init  :1;

        unsigned int    continuation    :1;

        unsigned int    is_tspecific    :1;

        unsigned int    is_comdat       :1;

        unsigned int    reserved        :4;

        int             file_loc_init_value;

        unsigned int    initialization_length;

        unsigned int    subspace_start;

        unsigned int    subspace_length;

        unsigned int    reserved2       :5;

        unsigned int    alignment       :27;

        union name_pt   name;

        int             fixup_request_index;

        unsigned int    fixup_request_quantity;

};

#endif /* _LINUX_SOM_H */