/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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/*

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* Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com>

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* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>

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* The Silver Hammer Group, Ltd.

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*

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* This file provides the definitions and structures needed to

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* support uClinux flat-format executables.

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*/

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#ifndef _LINUX_FLAT_H

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#define _LINUX_FLAT_H

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#define FLAT_VERSION 0x00000004L

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#ifdef CONFIG_BINFMT_SHARED_FLAT

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#define MAX_SHARED_LIBS (4)

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#else

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#define MAX_SHARED_LIBS (1)

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#endif

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/*

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* To make everything easier to port and manage cross platform

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* development, all fields are in network byte order.

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*/

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struct flat_hdr {

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char magic[4];

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unsigned long rev; /* version (as above) */

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unsigned long entry; /* Offset of first executable instruction

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with text segment from beginning of file */

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unsigned long data_start; /* Offset of data segment from beginning of

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file */

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unsigned long data_end; /* Offset of end of data segment

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from beginning of file */

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unsigned long bss_end; /* Offset of end of bss segment from beginning

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of file */

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/* (It is assumed that data_end through bss_end forms the bss segment.) */

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unsigned long stack_size; /* Size of stack, in bytes */

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unsigned long reloc_start; /* Offset of relocation records from

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beginning of file */

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unsigned long reloc_count; /* Number of relocation records */

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unsigned long flags;

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unsigned long build_date; /* When the program/library was built */

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unsigned long filler[5]; /* Reservered, set to zero */

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};

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#define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */

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#define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */

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#define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */

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#define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */

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#define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */

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#endif /* _LINUX_FLAT_H */

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