| David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com> |
| 3 | * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com> |
| 4 | * The Silver Hammer Group, Ltd. |
| 5 | * |
| 6 | * This file provides the definitions and structures needed to |
| 7 | * support uClinux flat-format executables. |
| 8 | */ |
| 9 | |
| 10 | #ifndef _UAPI_LINUX_FLAT_H |
| 11 | #define _UAPI_LINUX_FLAT_H |
| 12 | |
| 13 | |
| 14 | #define FLAT_VERSION 0x00000004L |
| 15 | |
| 16 | #ifdef CONFIG_BINFMT_SHARED_FLAT |
| 17 | #define MAX_SHARED_LIBS (4) |
| 18 | #else |
| 19 | #define MAX_SHARED_LIBS (1) |
| 20 | #endif |
| 21 | |
| 22 | /* |
| 23 | * To make everything easier to port and manage cross platform |
| 24 | * development, all fields are in network byte order. |
| 25 | */ |
| 26 | |
| 27 | struct flat_hdr { |
| 28 | char magic[4]; |
| 29 | unsigned long rev; /* version (as above) */ |
| 30 | unsigned long entry; /* Offset of first executable instruction |
| 31 | with text segment from beginning of file */ |
| 32 | unsigned long data_start; /* Offset of data segment from beginning of |
| 33 | file */ |
| 34 | unsigned long data_end; /* Offset of end of data segment |
| 35 | from beginning of file */ |
| 36 | unsigned long bss_end; /* Offset of end of bss segment from beginning |
| 37 | of file */ |
| 38 | |
| 39 | /* (It is assumed that data_end through bss_end forms the bss segment.) */ |
| 40 | |
| 41 | unsigned long stack_size; /* Size of stack, in bytes */ |
| 42 | unsigned long reloc_start; /* Offset of relocation records from |
| 43 | beginning of file */ |
| 44 | unsigned long reloc_count; /* Number of relocation records */ |
| 45 | unsigned long flags; |
| 46 | unsigned long build_date; /* When the program/library was built */ |
| 47 | unsigned long filler[5]; /* Reservered, set to zero */ |
| 48 | }; |
| 49 | |
| 50 | #define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */ |
| 51 | #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */ |
| 52 | #define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */ |
| 53 | #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */ |
| 54 | #define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */ |
| 55 | |
| 56 | |
| 57 | |
| 58 | #endif /* _UAPI_LINUX_FLAT_H */ |