projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 _LINUX_FLAT_H | |
| 11 | #define _LINUX_FLAT_H | |
| 12 | ||
| 13 | #ifdef __KERNEL__ | |
| 14 | #include <asm/flat.h> | |
| 15 | #endif | |
| 16 | ||
| 17 | #define FLAT_VERSION 0x00000004L | |
| 18 | ||
| 19 | #ifdef CONFIG_BINFMT_SHARED_FLAT | |
| 20 | #define MAX_SHARED_LIBS (4) | |
| 21 | #else | |
| 22 | #define MAX_SHARED_LIBS (1) | |
| 23 | #endif | |
| 24 | ||
| 25 | /* | |
| 26 | * To make everything easier to port and manage cross platform | |
| 27 | * development, all fields are in network byte order. | |
| 28 | */ | |
| 29 | ||
| 30 | struct flat_hdr { | |
| 31 | char magic[4]; | |
| 32 | unsigned long rev; /* version (as above) */ | |
| 33 | unsigned long entry; /* Offset of first executable instruction | |
| 34 | with text segment from beginning of file */ | |
| 35 | unsigned long data_start; /* Offset of data segment from beginning of | |
| 36 | file */ | |
| 37 | unsigned long data_end; /* Offset of end of data segment | |
| 38 | from beginning of file */ | |
| 39 | unsigned long bss_end; /* Offset of end of bss segment from beginning | |
| 40 | of file */ | |
| 41 | ||
| 42 | /* (It is assumed that data_end through bss_end forms the bss segment.) */ | |
| 43 | ||
| 44 | unsigned long stack_size; /* Size of stack, in bytes */ | |
| 45 | unsigned long reloc_start; /* Offset of relocation records from | |
| 46 | beginning of file */ | |
| 47 | unsigned long reloc_count; /* Number of relocation records */ | |
| 48 | unsigned long flags; | |
| 49 | unsigned long build_date; /* When the program/library was built */ | |
| 50 | unsigned long filler[5]; /* Reservered, set to zero */ | |
| 51 | }; | |
| 52 | ||
| 53 | #define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */ | |
| 54 | #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */ | |
| 55 | #define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */ | |
| 56 | #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */ | |
| 57 | #define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */ | |
| 58 | ||
| 59 | ||
| 60 | #ifdef __KERNEL__ /* so systems without linux headers can compile the apps */ | |
| 61 | /* | |
| 62 | * While it would be nice to keep this header clean, users of older | |
| 63 | * tools still need this support in the kernel. So this section is | |
| 64 | * purely for compatibility with old tool chains. | |
| 65 | * | |
| 66 | * DO NOT make changes or enhancements to the old format please, just work | |
| 67 | * with the format above, except to fix bugs with old format support. | |
| 68 | */ | |
| 69 | ||
| 70 | #include <asm/byteorder.h> | |
| 71 | ||
| 72 | #define OLD_FLAT_VERSION 0x00000002L | |
| 73 | #define OLD_FLAT_RELOC_TYPE_TEXT 0 | |
| 74 | #define OLD_FLAT_RELOC_TYPE_DATA 1 | |
| 75 | #define OLD_FLAT_RELOC_TYPE_BSS 2 | |
| 76 | ||
| 77 | typedef union { | |
| 78 | unsigned long value; | |
| 79 | struct { | |
| 80 | # if defined(mc68000) && !defined(CONFIG_COLDFIRE) | |
| 81 | signed long offset : 30; | |
| 82 | unsigned long type : 2; | |
| 83 | # define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */ | |
| 84 | # elif defined(__BIG_ENDIAN_BITFIELD) | |
| 85 | unsigned long type : 2; | |
| 86 | signed long offset : 30; | |
| 87 | # define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */ | |
| 88 | # elif defined(__LITTLE_ENDIAN_BITFIELD) | |
| 89 | signed long offset : 30; | |
| 90 | unsigned long type : 2; | |
| 91 | # define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */ | |
| 92 | # else | |
| 93 | # error "Unknown bitfield order for flat files." | |
| 94 | # endif | |
| 95 | } reloc; | |
| 96 | } flat_v2_reloc_t; | |
| 97 | ||
| 98 | #endif /* __KERNEL__ */ | |
| 99 | ||
| 100 | #endif /* _LINUX_FLAT_H */ |