diff options
Diffstat (limited to 'include/linux/som.h')
| -rw-r--r-- | include/linux/som.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/include/linux/som.h b/include/linux/som.h new file mode 100644 index 000000000000..166594e4e7be --- /dev/null +++ b/include/linux/som.h @@ -0,0 +1,154 @@ +#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 */ |