projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| e5fe0c52 PB |
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 | #define FLAT_VERSION 0x00000004L | |
| 11 | ||
| 12 | #ifdef CONFIG_BINFMT_SHARED_FLAT | |
| 13 | #define MAX_SHARED_LIBS (4) | |
| 14 | #else | |
| 15 | #define MAX_SHARED_LIBS (1) | |
| 16 | #endif | |
| 17 | ||
| 18 | /* | |
| 19 | * To make everything easier to port and manage cross platform | |
| 20 | * development, all fields are in network byte order. | |
| 21 | */ | |
| 22 | ||
| 23 | struct flat_hdr { | |
| 24 | char magic[4]; | |
| 223b8a40 PB |
25 | target_ulong rev; /* version (as above) */ |
| 26 | target_ulong entry; /* Offset of first executable instruction | |
| e5fe0c52 | 27 | with text segment from beginning of file */ |
| 223b8a40 | 28 | target_ulong data_start; /* Offset of data segment from beginning of |
| e5fe0c52 | 29 | file */ |
| 223b8a40 | 30 | target_ulong data_end; /* Offset of end of data segment |
| e5fe0c52 | 31 | from beginning of file */ |
| 223b8a40 | 32 | target_ulong bss_end; /* Offset of end of bss segment from beginning |
| e5fe0c52 PB |
33 | of file */ |
| 34 | ||
| 35 | /* (It is assumed that data_end through bss_end forms the bss segment.) */ | |
| 36 | ||
| 223b8a40 PB |
37 | target_ulong stack_size; /* Size of stack, in bytes */ |
| 38 | target_ulong reloc_start; /* Offset of relocation records from | |
| e5fe0c52 | 39 | beginning of file */ |
| 223b8a40 | 40 | target_ulong reloc_count; /* Number of relocation records */ |
| 5fafdf24 | 41 | target_ulong flags; |
| 223b8a40 PB |
42 | target_ulong build_date; /* When the program/library was built */ |
| 43 | target_ulong filler[5]; /* Reservered, set to zero */ | |
| e5fe0c52 PB |
44 | }; |
| 45 | ||
| 46 | #define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */ | |
| 47 | #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */ | |
| 48 | #define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */ | |
| 49 | #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */ | |
| 50 | #define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */ | |
| 51 | ||
| 52 | ||
| 53 | /* | |
| 54 | * While it would be nice to keep this header clean, users of older | |
| 55 | * tools still need this support in the kernel. So this section is | |
| 56 | * purely for compatibility with old tool chains. | |
| 57 | * | |
| 58 | * DO NOT make changes or enhancements to the old format please, just work | |
| 59 | * with the format above, except to fix bugs with old format support. | |
| 60 | */ | |
| 61 | ||
| 62 | #define OLD_FLAT_VERSION 0x00000002L | |
| 63 | #define OLD_FLAT_RELOC_TYPE_TEXT 0 | |
| 64 | #define OLD_FLAT_RELOC_TYPE_DATA 1 | |
| 65 | #define OLD_FLAT_RELOC_TYPE_BSS 2 | |
| 66 | ||
| 67 | # define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */ |