coff_s.h

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/* 
 *      HT Editor
 *      coff_s.h
 *
 *      Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __COFF_S_H_
#define __COFF_S_H_

#include "global.h"
#include "tools.h"

typedef unsigned int RVA;

typedef struct  COFF_HEADER {
        word machine HTPACKED;
        word section_count HTPACKED;
        dword timestamp HTPACKED;
        dword symbol_table_offset HTPACKED;
        dword symbol_count HTPACKED;
        word optional_header_size HTPACKED;
        word characteristics HTPACKED;
};

#define COFF_RELOCS_STRIPPED                    0x0001  // Relocation info stripped from file.
#define COFF_EXECUTABLE_IMAGE                   0x0002  // File is executable  (i.e. no unresolved externel references).
#define COFF_LINE_NUMS_STRIPPED                 0x0004  // Line nunbers stripped from file.
#define COFF_LOCAL_SYMS_STRIPPED                0x0008  // Local symbols stripped from file.
#define COFF_AGGRESIVE_WS_TRIM                  0x0010  // Agressively trim working set
#define COFF_BYTES_REVERSED_LO                  0x0080  // Bytes of machine word are reversed.
#define COFF_32BIT_MACHINE                      0x0100  // 32 bit word machine.
#define COFF_DEBUG_STRIPPED                     0x0200  // Debugging info stripped from file in .DBG file
#define COFF_REMOVABLE_RUN_FROM_SWAP            0x0400  // If Image is on removable media, copy and run from the swap file.
#define COFF_NET_RUN_FROM_SWAP                  0x0800  // If Image is on Net, copy and run from the swap file.
#define COFF_SYSTEM                             0x1000  // System File.
#define COFF_DLL                                0x2000  // File is a DLL.
#define COFF_UP_SYSTEM_ONLY                     0x4000  // File should only be run on a UP machine
#define COFF_BYTES_REVERSED_HI                  0x8000  // Bytes of machine word are reversed.

#define COFF_MACHINE_UNKNOWN                    0
#define COFF_MACHINE_I386                       0x14c   // Intel 386
#define COFF_MACHINE_I486                       0x14d   // Intel 486
#define COFF_MACHINE_I586                       0x14e   // Intel 586
#define COFF_MACHINE_R3000BE                    0x160   // MIPS big-endian
#define COFF_MACHINE_R3000                      0x162   // MIPS little-endian
#define COFF_MACHINE_R4000                      0x166   // MIPS little-endian
#define COFF_MACHINE_R10000                     0x168   // MIPS little-endian
#define COFF_MACHINE_ALPHA                      0x184   // Alpha_AXP
#define COFF_MACHINE_SH3                        0x1a2   // Hitachi SH3
#define COFF_MACHINE_SH4                        0x1a6   // Hitachi SH4
#define COFF_MACHINE_ARM                        0x1c0   // ARM
#define COFF_MACHINE_THUMB                      0x1c2   // THUMB
#define COFF_MACHINE_POWERPC_BE                 0x1df   // IBM PowerPC Big-Endian (?)
#define COFF_MACHINE_POWERPC_LE                 0x1f0   // IBM PowerPC Little-Endian
#define COFF_MACHINE_IA64                       0x200   // Intel IA64
#define COFF_MACHINE_MIPS16                     0x266   // MIPS16
#define COFF_MACHINE_68k                        0x268   // Motorola 68k
#define COFF_MACHINE_ALPHA_AXP_64               0x284   // Alpha AXP 64
#define COFF_MACHINE_MIPSf                      0x366   // MIPSf
#define COFF_MACHINE_MIPS16f                    0x466   // MIPS16f
#define COFF_MACHINE_AMD_HAMMER                 0x8664  // AMD Hammer

// FIXME: not yet implemented: XCOFF64, no sample file available
//#define COFF_MACHINE_POWERPC64_BE             0x1ef   // XCOFF 64Bit Big-Endian (PowerPC only ?)

//
// Optional header format.
//

#define COFF_OPTSIZE_0                          0x00

#define COFF_OPTSIZE_COFF32                     0x1c
#define COFF_OPTSIZE_XCOFF32                    0x48

#define COFF_OPTSIZE_PE32                       0xe0


#define COFF_OPTMAGIC_ROMIMAGE                  0x107

#define COFF_OPTMAGIC_PE32                      0x10b
#define COFF_OPTMAGIC_COFF32                    0x10b

#define COFF_OPTMAGIC_PE64                      0x20b

typedef struct  COFF_OPTIONAL_HEADER32 {
        word magic HTPACKED;
        byte major_linker_version HTPACKED;
        byte minor_linker_version HTPACKED;
        dword code_size HTPACKED;
        dword data_size HTPACKED;
        dword bss_size HTPACKED;
        dword entrypoint_address HTPACKED;
        dword code_base HTPACKED;
        dword data_base HTPACKED;
};

/*
 *      same as COFF_OPTIONAL_HEADER32 but no data_base
 */
typedef struct  COFF_OPTIONAL_HEADER64 {
        word magic HTPACKED;
        byte major_linker_version HTPACKED;
        byte minor_linker_version HTPACKED;
        dword code_size HTPACKED;
        dword data_size HTPACKED;
        dword bss_size HTPACKED;
        dword entrypoint_address HTPACKED;
        dword code_base HTPACKED;
};

/*
 *      Section header
 */

#define COFF_SIZEOF_SHORT_NAME                  8

struct COFF_SECTION_HEADER {
        byte name[COFF_SIZEOF_SHORT_NAME] HTPACKED;
        dword data_vsize HTPACKED;      // or data_phys_address !
        dword data_address HTPACKED;
        dword data_size HTPACKED;
        dword data_offset HTPACKED;
        dword relocation_offset HTPACKED;
        dword linenumber_offset HTPACKED;
        word relocation_count HTPACKED;
        word linenumber_count HTPACKED;
        dword characteristics HTPACKED;
};

#define COFF_SIZEOF_SECTION_HEADER              40

/*
 * Section characteristics.
 */

//      COFF_SCN_TYPE_REG                       0x00000000  // Reserved.
//      COFF_SCN_TYPE_DSECT                     0x00000001  // Reserved.
//      COFF_SCN_TYPE_NOLOAD                    0x00000002  // Reserved.
//      COFF_SCN_TYPE_GROUP                     0x00000004  // Reserved.
#define COFF_SCN_TYPE_NO_PAD                    0x00000008  // Reserved.
//      COFF_SCN_TYPE_COPY                      0x00000010  // Reserved.

#define COFF_SCN_CNT_CODE                       0x00000020      // Section contains code.
#define COFF_SCN_CNT_INITIALIZED_DATA           0x00000040      // Section contains initialized data.
#define COFF_SCN_CNT_UNINITIALIZED_DATA         0x00000080      // Section contains uninitialized data.

#define COFF_SCN_LNK_OTHER                      0x00000100      // Reserved.
#define COFF_SCN_LNK_INFO                       0x00000200      // Section contains comments or some other type of information.
//      COFF_SCN_TYPE_OVER                      0x00000400      // Reserved.
#define COFF_SCN_LNK_REMOVE                     0x00000800      // Section contents will not become part of image.
#define COFF_SCN_LNK_COMDAT                     0x00001000      // Section contents comdat.
//                                              0x00002000      // Reserved.

//      COFF_SCN_MEM_PROTECTED - Obsolete       0x00004000
#define COFF_SCN_MEM_FARDATA                    0x00008000
//      COFF_SCN_MEM_SYSHEAP  - Obsolete        0x00010000
#define COFF_SCN_MEM_PURGEABLE                  0x00020000
#define COFF_SCN_MEM_16BIT                      0x00020000
#define COFF_SCN_MEM_LOCKED                     0x00040000
#define COFF_SCN_MEM_PRELOAD                    0x00080000

#define COFF_SCN_ALIGN_1BYTES                   0x00100000      //
#define COFF_SCN_ALIGN_2BYTES                   0x00200000      //
#define COFF_SCN_ALIGN_4BYTES                   0x00300000      //
#define COFF_SCN_ALIGN_8BYTES                   0x00400000      //
#define COFF_SCN_ALIGN_16BYTES                  0x00500000      // Default alignment if no others are specified.
#define COFF_SCN_ALIGN_32BYTES                  0x00600000      //
#define COFF_SCN_ALIGN_64BYTES                  0x00700000      //
// Unused                                       0x00800000

#define COFF_SCN_LNK_NRELOC_OVFL                0x01000000      // Section contains extended relocations.
#define COFF_SCN_MEM_DISCARDABLE                0x02000000      // Section can be discarded.
#define COFF_SCN_MEM_NOT_CACHED                 0x04000000      // Section is not cachable.
#define COFF_SCN_MEM_NOT_PAGED                  0x08000000      // Section is not pageable.
#define COFF_SCN_MEM_SHARED                     0x10000000      // Section is shareable.
#define COFF_SCN_MEM_EXECUTE                    0x20000000      // Section is executable.
#define COFF_SCN_MEM_READ                       0x40000000      // Section is readable.
#define COFF_SCN_MEM_WRITE                      0x80000000      // Section is writeable.

extern byte COFF_HEADER_struct[];
extern byte COFF_OPTIONAL_HEADER32_struct[];
extern byte COFF_OPTIONAL_HEADER64_struct[];
extern byte COFF_SECTION_HEADER_struct[];

#endif /* !__COFF_S_H_ */

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