projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _LINUX_SOM_H |
| 2 | #define _LINUX_SOM_H | |
| 3 | ||
| 4 | /* File format definition for SOM executables / shared libraries */ | |
| 5 | ||
| 6 | /* we need struct timespec */ | |
| 7 | #include <linux/time.h> | |
| 8 | ||
| 9 | #define SOM_PAGESIZE 4096 | |
| 10 | ||
| 11 | /* this is the SOM header */ | |
| 12 | struct som_hdr { | |
| 13 | short system_id; /* magic number - system */ | |
| 14 | short a_magic; /* magic number - file type */ | |
| 15 | unsigned int version_id; /* versiod ID: YYMMDDHH */ | |
| 16 | struct timespec file_time; /* system clock */ | |
| 17 | unsigned int entry_space; /* space for entry point */ | |
| 18 | unsigned int entry_subspace; /* subspace for entry point */ | |
| 19 | unsigned int entry_offset; /* offset of entry point */ | |
| 20 | unsigned int aux_header_location; /* auxiliary header location */ | |
| 21 | unsigned int aux_header_size; /* auxiliary header size */ | |
| 22 | unsigned int som_length; /* length of entire SOM */ | |
| 23 | unsigned int presumed_dp; /* compiler's DP value */ | |
| 24 | unsigned int space_location; /* space dictionary location */ | |
| 25 | unsigned int space_total; /* number of space entries */ | |
| 26 | unsigned int subspace_location; /* subspace entries location */ | |
| 27 | unsigned int subspace_total; /* number of subspace entries */ | |
| 28 | unsigned int loader_fixup_location; /* MPE/iX loader fixup */ | |
| 29 | unsigned int loader_fixup_total; /* number of fixup records */ | |
| 30 | unsigned int space_strings_location; /* (sub)space names */ | |
| 31 | unsigned int space_strings_size; /* size of strings area */ | |
| 32 | unsigned int init_array_location; /* reserved */ | |
| 33 | unsigned int init_array_total; /* reserved */ | |
| 34 | unsigned int compiler_location; /* module dictionary */ | |
| 35 | unsigned int compiler_total; /* number of modules */ | |
| 36 | unsigned int symbol_location; /* symbol dictionary */ | |
| 37 | unsigned int symbol_total; /* number of symbols */ | |
| 38 | unsigned int fixup_request_location; /* fixup requests */ | |
| 39 | unsigned int fixup_request_total; /* number of fixup requests */ | |
| 40 | unsigned int symbol_strings_location;/* module & symbol names area */ | |
| 41 | unsigned int symbol_strings_size; /* size of strings area */ | |
| 42 | unsigned int unloadable_sp_location; /* unloadable spaces location */ | |
| 43 | unsigned int unloadable_sp_size; /* size of data */ | |
| 44 | unsigned int checksum; | |
| 45 | }; | |
| 46 | ||
| 47 | /* values for system_id */ | |
| 48 | ||
| 49 | #define SOM_SID_PARISC_1_0 0x020b | |
| 50 | #define SOM_SID_PARISC_1_1 0x0210 | |
| 51 | #define SOM_SID_PARISC_2_0 0x0214 | |
| 52 | ||
| 53 | /* values for a_magic */ | |
| 54 | ||
| 55 | #define SOM_LIB_EXEC 0x0104 | |
| 56 | #define SOM_RELOCATABLE 0x0106 | |
| 57 | #define SOM_EXEC_NONSHARE 0x0107 | |
| 58 | #define SOM_EXEC_SHARE 0x0108 | |
| 59 | #define SOM_EXEC_DEMAND 0x010B | |
| 60 | #define SOM_LIB_DYN 0x010D | |
| 61 | #define SOM_LIB_SHARE 0x010E | |
| 62 | #define SOM_LIB_RELOC 0x0619 | |
| 63 | ||
| 64 | /* values for version_id. Decimal not hex, yes. Grr. */ | |
| 65 | ||
| 66 | #define SOM_ID_OLD 85082112 | |
| 67 | #define SOM_ID_NEW 87102412 | |
| 68 | ||
| 69 | struct aux_id { | |
| 70 | unsigned int mandatory :1; /* the linker must understand this */ | |
| 71 | unsigned int copy :1; /* Must be copied by the linker */ | |
| 72 | unsigned int append :1; /* Must be merged by the linker */ | |
| 73 | unsigned int ignore :1; /* Discard section if unknown */ | |
| 74 | unsigned int reserved :12; | |
| 75 | unsigned int type :16; /* Header type */ | |
| 76 | unsigned int length; /* length of _following_ data */ | |
| 77 | }; | |
| 78 | ||
| 79 | /* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */ | |
| 80 | struct som_exec_auxhdr { | |
| 81 | struct aux_id som_auxhdr; | |
| 82 | int exec_tsize; /* Text size in bytes */ | |
| 83 | int exec_tmem; /* Address to load text at */ | |
| 84 | int exec_tfile; /* Location of text in file */ | |
| 85 | int exec_dsize; /* Data size in bytes */ | |
| 86 | int exec_dmem; /* Address to load data at */ | |
| 87 | int exec_dfile; /* Location of data in file */ | |
| 88 | int exec_bsize; /* Uninitialised data (bss) */ | |
| 89 | int exec_entry; /* Address to start executing */ | |
| 90 | int exec_flags; /* loader flags */ | |
| 91 | int exec_bfill; /* initialisation value for bss */ | |
| 92 | }; | |
| 93 | ||
| 94 | /* Oh, the things people do to avoid casts. Shame it'll break with gcc's | |
| 95 | * new aliasing rules really. | |
| 96 | */ | |
| 97 | union name_pt { | |
| 98 | char * n_name; | |
| 99 | unsigned int n_strx; | |
| 100 | }; | |
| 101 | ||
| 102 | /* The Space Dictionary */ | |
| 103 | struct space_dictionary_record { | |
| 104 | union name_pt name; /* index to subspace name */ | |
| 105 | unsigned int is_loadable :1; /* loadable */ | |
| 106 | unsigned int is_defined :1; /* defined within file */ | |
| 107 | unsigned int is_private :1; /* not sharable */ | |
| 108 | unsigned int has_intermediate_code :1; /* contains intermediate code */ | |
| 109 | unsigned int is_tspecific :1; /* thread specific */ | |
| 110 | unsigned int reserved :11; /* for future expansion */ | |
| 111 | unsigned int sort_key :8; /* for linker */ | |
| 112 | unsigned int reserved2 :8; /* for future expansion */ | |
| 113 | ||
| 114 | int space_number; /* index */ | |
| 115 | int subspace_index; /* index into subspace dict */ | |
| 116 | unsigned int subspace_quantity; /* number of subspaces */ | |
| 117 | int loader_fix_index; /* for loader */ | |
| 118 | unsigned int loader_fix_quantity; /* for loader */ | |
| 119 | int init_pointer_index; /* data pointer array index */ | |
| 120 | unsigned int init_pointer_quantity; /* number of data pointers */ | |
| 121 | }; | |
| 122 | ||
| 123 | /* The Subspace Dictionary */ | |
| 124 | struct subspace_dictionary_record { | |
| 125 | int space_index; | |
| 126 | unsigned int access_control_bits :7; | |
| 127 | unsigned int memory_resident :1; | |
| 128 | unsigned int dup_common :1; | |
| 129 | unsigned int is_common :1; | |
| 130 | unsigned int quadrant :2; | |
| 131 | unsigned int initially_frozen :1; | |
| 132 | unsigned int is_first :1; | |
| 133 | unsigned int code_only :1; | |
| 134 | unsigned int sort_key :8; | |
| 135 | unsigned int replicate_init :1; | |
| 136 | unsigned int continuation :1; | |
| 137 | unsigned int is_tspecific :1; | |
| 138 | unsigned int is_comdat :1; | |
| 139 | unsigned int reserved :4; | |
| 140 | ||
| 141 | int file_loc_init_value; | |
| 142 | unsigned int initialization_length; | |
| 143 | unsigned int subspace_start; | |
| 144 | unsigned int subspace_length; | |
| 145 | ||
| 146 | unsigned int reserved2 :5; | |
| 147 | unsigned int alignment :27; | |
| 148 | ||
| 149 | union name_pt name; | |
| 150 | int fixup_request_index; | |
| 151 | unsigned int fixup_request_quantity; | |
| 152 | }; | |
| 153 | ||
| 154 | #endif /* _LINUX_SOM_H */ |