English
- #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 */
