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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 */