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gerrit-public.fairphone.software / kernel / msm-4.19 / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / include / linux / som.h
blob: 166594e4e7be8e25150ebd6c23f94a264f9c0e38 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]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 */
12struct 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
69struct 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. */
80struct 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 */
97union name_pt {
98 char * n_name;
99 unsigned int n_strx;
100};
101
102/* The Space Dictionary */
103struct 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 */
124struct 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 */