| /* |
| * Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com> |
| * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com> |
| * The Silver Hammer Group, Ltd. |
| * |
| * This file provides the definitions and structures needed to |
| * support uClinux flat-format executables. |
| */ |
| |
| #define FLAT_VERSION 0x00000004L |
| |
| #ifdef CONFIG_BINFMT_SHARED_FLAT |
| #define MAX_SHARED_LIBS (4) |
| #else |
| #define MAX_SHARED_LIBS (1) |
| #endif |
| |
| /* |
| * To make everything easier to port and manage cross platform |
| * development, all fields are in network byte order. |
| */ |
| |
| struct flat_hdr { |
| char magic[4]; |
| unsigned long rev; /* version (as above) */ |
| unsigned long entry; /* Offset of first executable instruction |
| with text segment from beginning of file */ |
| unsigned long data_start; /* Offset of data segment from beginning of |
| file */ |
| unsigned long data_end; /* Offset of end of data segment |
| from beginning of file */ |
| unsigned long bss_end; /* Offset of end of bss segment from beginning |
| of file */ |
| |
| /* (It is assumed that data_end through bss_end forms the bss segment.) */ |
| |
| unsigned long stack_size; /* Size of stack, in bytes */ |
| unsigned long reloc_start; /* Offset of relocation records from |
| beginning of file */ |
| unsigned long reloc_count; /* Number of relocation records */ |
| unsigned long flags; |
| unsigned long build_date; /* When the program/library was built */ |
| unsigned long filler[5]; /* Reservered, set to zero */ |
| }; |
| |
| #define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */ |
| #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */ |
| #define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */ |
| #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */ |
| #define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */ |
| |
| |
| /* |
| * While it would be nice to keep this header clean, users of older |
| * tools still need this support in the kernel. So this section is |
| * purely for compatibility with old tool chains. |
| * |
| * DO NOT make changes or enhancements to the old format please, just work |
| * with the format above, except to fix bugs with old format support. |
| */ |
| |
| #define OLD_FLAT_VERSION 0x00000002L |
| #define OLD_FLAT_RELOC_TYPE_TEXT 0 |
| #define OLD_FLAT_RELOC_TYPE_DATA 1 |
| #define OLD_FLAT_RELOC_TYPE_BSS 2 |
| |
| # define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */ |
