1*53ee8cc1Swenshuai.xi /* 2*53ee8cc1Swenshuai.xi * Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com> 3*53ee8cc1Swenshuai.xi * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com> 4*53ee8cc1Swenshuai.xi * The Silver Hammer Group, Ltd. 5*53ee8cc1Swenshuai.xi * 6*53ee8cc1Swenshuai.xi * This file provides the definitions and structures needed to 7*53ee8cc1Swenshuai.xi * support uClinux flat-format executables. 8*53ee8cc1Swenshuai.xi */ 9*53ee8cc1Swenshuai.xi 10*53ee8cc1Swenshuai.xi #ifndef _LINUX_FLAT_H 11*53ee8cc1Swenshuai.xi #define _LINUX_FLAT_H 12*53ee8cc1Swenshuai.xi 13*53ee8cc1Swenshuai.xi 14*53ee8cc1Swenshuai.xi #define FLAT_VERSION 0x00000004L 15*53ee8cc1Swenshuai.xi 16*53ee8cc1Swenshuai.xi #ifdef CONFIG_BINFMT_SHARED_FLAT 17*53ee8cc1Swenshuai.xi #define MAX_SHARED_LIBS (4) 18*53ee8cc1Swenshuai.xi #else 19*53ee8cc1Swenshuai.xi #define MAX_SHARED_LIBS (1) 20*53ee8cc1Swenshuai.xi #endif 21*53ee8cc1Swenshuai.xi 22*53ee8cc1Swenshuai.xi /* 23*53ee8cc1Swenshuai.xi * To make everything easier to port and manage cross platform 24*53ee8cc1Swenshuai.xi * development, all fields are in network byte order. 25*53ee8cc1Swenshuai.xi */ 26*53ee8cc1Swenshuai.xi 27*53ee8cc1Swenshuai.xi struct flat_hdr { 28*53ee8cc1Swenshuai.xi char magic[4]; 29*53ee8cc1Swenshuai.xi unsigned long rev; /* version (as above) */ 30*53ee8cc1Swenshuai.xi unsigned long entry; /* Offset of first executable instruction 31*53ee8cc1Swenshuai.xi with text segment from beginning of file */ 32*53ee8cc1Swenshuai.xi unsigned long data_start; /* Offset of data segment from beginning of 33*53ee8cc1Swenshuai.xi file */ 34*53ee8cc1Swenshuai.xi unsigned long data_end; /* Offset of end of data segment 35*53ee8cc1Swenshuai.xi from beginning of file */ 36*53ee8cc1Swenshuai.xi unsigned long bss_end; /* Offset of end of bss segment from beginning 37*53ee8cc1Swenshuai.xi of file */ 38*53ee8cc1Swenshuai.xi 39*53ee8cc1Swenshuai.xi /* (It is assumed that data_end through bss_end forms the bss segment.) */ 40*53ee8cc1Swenshuai.xi 41*53ee8cc1Swenshuai.xi unsigned long stack_size; /* Size of stack, in bytes */ 42*53ee8cc1Swenshuai.xi unsigned long reloc_start; /* Offset of relocation records from 43*53ee8cc1Swenshuai.xi beginning of file */ 44*53ee8cc1Swenshuai.xi unsigned long reloc_count; /* Number of relocation records */ 45*53ee8cc1Swenshuai.xi unsigned long flags; 46*53ee8cc1Swenshuai.xi unsigned long build_date; /* When the program/library was built */ 47*53ee8cc1Swenshuai.xi unsigned long filler[5]; /* Reservered, set to zero */ 48*53ee8cc1Swenshuai.xi }; 49*53ee8cc1Swenshuai.xi 50*53ee8cc1Swenshuai.xi #define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */ 51*53ee8cc1Swenshuai.xi #define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */ 52*53ee8cc1Swenshuai.xi #define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */ 53*53ee8cc1Swenshuai.xi #define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */ 54*53ee8cc1Swenshuai.xi #define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */ 55*53ee8cc1Swenshuai.xi 56*53ee8cc1Swenshuai.xi 57*53ee8cc1Swenshuai.xi 58*53ee8cc1Swenshuai.xi #endif /* _LINUX_FLAT_H */ 59