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1 | e5fe0c52 | pbrook | /*
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2 | e5fe0c52 | pbrook | * Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com>
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3 | e5fe0c52 | pbrook | * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
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4 | e5fe0c52 | pbrook | * The Silver Hammer Group, Ltd.
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5 | e5fe0c52 | pbrook | *
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6 | e5fe0c52 | pbrook | * This file provides the definitions and structures needed to
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7 | e5fe0c52 | pbrook | * support uClinux flat-format executables.
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8 | e5fe0c52 | pbrook | */
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9 | e5fe0c52 | pbrook | |
10 | e5fe0c52 | pbrook | #define FLAT_VERSION 0x00000004L |
11 | e5fe0c52 | pbrook | |
12 | e5fe0c52 | pbrook | #ifdef CONFIG_BINFMT_SHARED_FLAT
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13 | e5fe0c52 | pbrook | #define MAX_SHARED_LIBS (4) |
14 | e5fe0c52 | pbrook | #else
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15 | e5fe0c52 | pbrook | #define MAX_SHARED_LIBS (1) |
16 | e5fe0c52 | pbrook | #endif
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17 | e5fe0c52 | pbrook | |
18 | e5fe0c52 | pbrook | /*
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19 | e5fe0c52 | pbrook | * To make everything easier to port and manage cross platform
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20 | e5fe0c52 | pbrook | * development, all fields are in network byte order.
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21 | e5fe0c52 | pbrook | */
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22 | e5fe0c52 | pbrook | |
23 | e5fe0c52 | pbrook | struct flat_hdr {
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24 | e5fe0c52 | pbrook | char magic[4]; |
25 | 223b8a40 | pbrook | target_ulong rev; /* version (as above) */
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26 | 223b8a40 | pbrook | target_ulong entry; /* Offset of first executable instruction
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27 | e5fe0c52 | pbrook | with text segment from beginning of file */
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28 | 223b8a40 | pbrook | target_ulong data_start; /* Offset of data segment from beginning of
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29 | e5fe0c52 | pbrook | file */
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30 | 223b8a40 | pbrook | target_ulong data_end; /* Offset of end of data segment
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31 | e5fe0c52 | pbrook | from beginning of file */
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32 | 223b8a40 | pbrook | target_ulong bss_end; /* Offset of end of bss segment from beginning
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33 | e5fe0c52 | pbrook | of file */
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34 | e5fe0c52 | pbrook | |
35 | e5fe0c52 | pbrook | /* (It is assumed that data_end through bss_end forms the bss segment.) */
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36 | e5fe0c52 | pbrook | |
37 | 223b8a40 | pbrook | target_ulong stack_size; /* Size of stack, in bytes */
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38 | 223b8a40 | pbrook | target_ulong reloc_start; /* Offset of relocation records from
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39 | e5fe0c52 | pbrook | beginning of file */
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40 | 223b8a40 | pbrook | target_ulong reloc_count; /* Number of relocation records */
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41 | 223b8a40 | pbrook | target_ulong flags; |
42 | 223b8a40 | pbrook | target_ulong build_date; /* When the program/library was built */
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43 | 223b8a40 | pbrook | target_ulong filler[5]; /* Reservered, set to zero */ |
44 | e5fe0c52 | pbrook | }; |
45 | e5fe0c52 | pbrook | |
46 | e5fe0c52 | pbrook | #define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */ |
47 | e5fe0c52 | pbrook | #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */ |
48 | e5fe0c52 | pbrook | #define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */ |
49 | e5fe0c52 | pbrook | #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */ |
50 | e5fe0c52 | pbrook | #define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */ |
51 | e5fe0c52 | pbrook | |
52 | e5fe0c52 | pbrook | |
53 | e5fe0c52 | pbrook | /*
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54 | e5fe0c52 | pbrook | * While it would be nice to keep this header clean, users of older
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55 | e5fe0c52 | pbrook | * tools still need this support in the kernel. So this section is
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56 | e5fe0c52 | pbrook | * purely for compatibility with old tool chains.
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57 | e5fe0c52 | pbrook | *
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58 | e5fe0c52 | pbrook | * DO NOT make changes or enhancements to the old format please, just work
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59 | e5fe0c52 | pbrook | * with the format above, except to fix bugs with old format support.
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60 | e5fe0c52 | pbrook | */
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61 | e5fe0c52 | pbrook | |
62 | e5fe0c52 | pbrook | #define OLD_FLAT_VERSION 0x00000002L |
63 | e5fe0c52 | pbrook | #define OLD_FLAT_RELOC_TYPE_TEXT 0 |
64 | e5fe0c52 | pbrook | #define OLD_FLAT_RELOC_TYPE_DATA 1 |
65 | e5fe0c52 | pbrook | #define OLD_FLAT_RELOC_TYPE_BSS 2 |
66 | e5fe0c52 | pbrook | |
67 | e5fe0c52 | pbrook | # define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */ |