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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _LINUX_SOM_H |
| 2 | #define _LINUX_SOM_H |
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| 3 | |||
| 4 | /* File format definition for SOM executables / shared libraries */ |
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| 5 | |||
| 6 | /* we need struct timespec */ |
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| 7 | #include <linux/time.h> |
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| 8 | |||
| 9 | #define SOM_PAGESIZE 4096 |
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| 10 | |||
| 11 | /* this is the SOM header */ |
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| 12 | struct som_hdr { |
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| 13 | short system_id; /* magic number - system */ |
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| 14 | short a_magic; /* magic number - file type */ |
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| 15 | unsigned int version_id; /* versiod ID: YYMMDDHH */ |
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| 16 | struct timespec file_time; /* system clock */ |
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| 17 | unsigned int entry_space; /* space for entry point */ |
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| 18 | unsigned int entry_subspace; /* subspace for entry point */ |
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| 19 | unsigned int entry_offset; /* offset of entry point */ |
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| 20 | unsigned int aux_header_location; /* auxiliary header location */ |
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| 21 | unsigned int aux_header_size; /* auxiliary header size */ |
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| 22 | unsigned int som_length; /* length of entire SOM */ |
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| 23 | unsigned int presumed_dp; /* compiler's DP value */ |
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| 24 | unsigned int space_location; /* space dictionary location */ |
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| 25 | unsigned int space_total; /* number of space entries */ |
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| 26 | unsigned int subspace_location; /* subspace entries location */ |
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| 27 | unsigned int subspace_total; /* number of subspace entries */ |
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| 28 | unsigned int loader_fixup_location; /* MPE/iX loader fixup */ |
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| 29 | unsigned int loader_fixup_total; /* number of fixup records */ |
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| 30 | unsigned int space_strings_location; /* (sub)space names */ |
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| 31 | unsigned int space_strings_size; /* size of strings area */ |
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| 32 | unsigned int init_array_location; /* reserved */ |
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| 33 | unsigned int init_array_total; /* reserved */ |
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| 34 | unsigned int compiler_location; /* module dictionary */ |
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| 35 | unsigned int compiler_total; /* number of modules */ |
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| 36 | unsigned int symbol_location; /* symbol dictionary */ |
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| 37 | unsigned int symbol_total; /* number of symbols */ |
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| 38 | unsigned int fixup_request_location; /* fixup requests */ |
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| 39 | unsigned int fixup_request_total; /* number of fixup requests */ |
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| 40 | unsigned int symbol_strings_location;/* module & symbol names area */ |
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| 41 | unsigned int symbol_strings_size; /* size of strings area */ |
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| 42 | unsigned int unloadable_sp_location; /* unloadable spaces location */ |
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| 43 | unsigned int unloadable_sp_size; /* size of data */ |
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| 44 | unsigned int checksum; |
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| 45 | }; |
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| 46 | |||
| 47 | /* values for system_id */ |
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| 48 | |||
| 49 | #define SOM_SID_PARISC_1_0 0x020b |
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| 50 | #define SOM_SID_PARISC_1_1 0x0210 |
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| 51 | #define SOM_SID_PARISC_2_0 0x0214 |
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| 52 | |||
| 53 | /* values for a_magic */ |
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| 54 | |||
| 55 | #define SOM_LIB_EXEC 0x0104 |
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| 56 | #define SOM_RELOCATABLE 0x0106 |
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| 57 | #define SOM_EXEC_NONSHARE 0x0107 |
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| 58 | #define SOM_EXEC_SHARE 0x0108 |
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| 59 | #define SOM_EXEC_DEMAND 0x010B |
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| 60 | #define SOM_LIB_DYN 0x010D |
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| 61 | #define SOM_LIB_SHARE 0x010E |
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| 62 | #define SOM_LIB_RELOC 0x0619 |
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| 63 | |||
| 64 | /* values for version_id. Decimal not hex, yes. Grr. */ |
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| 65 | |||
| 66 | #define SOM_ID_OLD 85082112 |
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| 67 | #define SOM_ID_NEW 87102412 |
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| 68 | |||
| 69 | struct aux_id { |
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| 70 | unsigned int mandatory :1; /* the linker must understand this */ |
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| 71 | unsigned int copy :1; /* Must be copied by the linker */ |
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| 72 | unsigned int append :1; /* Must be merged by the linker */ |
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| 73 | unsigned int ignore :1; /* Discard section if unknown */ |
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| 74 | unsigned int reserved :12; |
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| 75 | unsigned int type :16; /* Header type */ |
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| 76 | unsigned int length; /* length of _following_ data */ |
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| 77 | }; |
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| 78 | |||
| 79 | /* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */ |
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| 80 | struct som_exec_auxhdr { |
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| 81 | struct aux_id som_auxhdr; |
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| 82 | int exec_tsize; /* Text size in bytes */ |
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| 83 | int exec_tmem; /* Address to load text at */ |
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| 84 | int exec_tfile; /* Location of text in file */ |
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| 85 | int exec_dsize; /* Data size in bytes */ |
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| 86 | int exec_dmem; /* Address to load data at */ |
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| 87 | int exec_dfile; /* Location of data in file */ |
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| 88 | int exec_bsize; /* Uninitialised data (bss) */ |
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| 89 | int exec_entry; /* Address to start executing */ |
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| 90 | int exec_flags; /* loader flags */ |
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| 91 | int exec_bfill; /* initialisation value for bss */ |
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| 92 | }; |
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| 93 | |||
| 94 | /* Oh, the things people do to avoid casts. Shame it'll break with gcc's |
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| 95 | * new aliasing rules really. |
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| 96 | */ |
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| 97 | union name_pt { |
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| 98 | char * n_name; |
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| 99 | unsigned int n_strx; |
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| 100 | }; |
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| 101 | |||
| 102 | /* The Space Dictionary */ |
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| 103 | struct space_dictionary_record { |
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| 104 | union name_pt name; /* index to subspace name */ |
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| 105 | unsigned int is_loadable :1; /* loadable */ |
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| 106 | unsigned int is_defined :1; /* defined within file */ |
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| 107 | unsigned int is_private :1; /* not sharable */ |
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| 108 | unsigned int has_intermediate_code :1; /* contains intermediate code */ |
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| 109 | unsigned int is_tspecific :1; /* thread specific */ |
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| 110 | unsigned int reserved :11; /* for future expansion */ |
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| 111 | unsigned int sort_key :8; /* for linker */ |
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| 112 | unsigned int reserved2 :8; /* for future expansion */ |
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| 113 | |||
| 114 | int space_number; /* index */ |
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| 115 | int subspace_index; /* index into subspace dict */ |
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| 116 | unsigned int subspace_quantity; /* number of subspaces */ |
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| 117 | int loader_fix_index; /* for loader */ |
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| 118 | unsigned int loader_fix_quantity; /* for loader */ |
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| 119 | int init_pointer_index; /* data pointer array index */ |
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| 120 | unsigned int init_pointer_quantity; /* number of data pointers */ |
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| 121 | }; |
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| 122 | |||
| 123 | /* The Subspace Dictionary */ |
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| 124 | struct subspace_dictionary_record { |
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| 125 | int space_index; |
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| 126 | unsigned int access_control_bits :7; |
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| 127 | unsigned int memory_resident :1; |
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| 128 | unsigned int dup_common :1; |
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| 129 | unsigned int is_common :1; |
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| 130 | unsigned int quadrant :2; |
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| 131 | unsigned int initially_frozen :1; |
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| 132 | unsigned int is_first :1; |
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| 133 | unsigned int code_only :1; |
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| 134 | unsigned int sort_key :8; |
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| 135 | unsigned int replicate_init :1; |
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| 136 | unsigned int continuation :1; |
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| 137 | unsigned int is_tspecific :1; |
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| 138 | unsigned int is_comdat :1; |
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| 139 | unsigned int reserved :4; |
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| 140 | |||
| 141 | int file_loc_init_value; |
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| 142 | unsigned int initialization_length; |
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| 143 | unsigned int subspace_start; |
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| 144 | unsigned int subspace_length; |
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| 145 | |||
| 146 | unsigned int reserved2 :5; |
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| 147 | unsigned int alignment :27; |
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| 148 | |||
| 149 | union name_pt name; |
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| 150 | int fixup_request_index; |
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| 151 | unsigned int fixup_request_quantity; |
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| 152 | }; |
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| 153 | |||
| 154 | #endif /* _LINUX_SOM_H */ |