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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 14:19:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 14:19:18 +0000
commit4035b1bfb1e5843a539a8b624d21952b756974d1 (patch)
treef1e9cd5bf548cbc57ff2fddfb2b4aa9ae95587e2 /include/iprt/formats/omf.h
parentInitial commit. (diff)
downloadvirtualbox-upstream.tar.xz
virtualbox-upstream.zip
Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/include/iprt/formats/omf.h b/include/iprt/formats/omf.h
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+/* $Id: omf.h $ */
+/** @file
+ * IPRT - Relocatable Object Module Format (OMF).
+ *
+ * @remarks For a more details description, see specification from Tools
+ * Interface Standards (TIS), version 1.1 dated May 2015.
+ * Typically named found as OMF_v1.1.pdf.
+ */
+
+/*
+ * Copyright (C) 2006-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef IPRT_INCLUDED_formats_omf_h
+#define IPRT_INCLUDED_formats_omf_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/stdint.h>
+#include <iprt/assertcompile.h>
+
+
+/** @defgroup grp_rt_formats_omf Relocatable Object Module Format (OMF) structures and definitions
+ * @ingroup grp_rt_formats
+ * @{
+ */
+
+/**
+ * OMF record header.
+ */
+#pragma pack(1)
+typedef struct OMFRECHDR
+{
+ /** The record type. */
+ uint8_t bType;
+ /** The record length, excluding the this header. */
+ uint16_t cbLen;
+} OMFRECHDR;
+#pragma pack()
+AssertCompileSize(OMFRECHDR, 3);
+/** Pointer to an OMF header. */
+typedef OMFRECHDR *POMFRECHDR;
+/** Pointer to a const OMF header. */
+typedef OMFRECHDR *PCOMFRECHDR;
+
+/** The max OMF record length, including the header. */
+#define OMF_MAX_RECORD_LENGTH UINT16_C(1024)
+
+/** The max OMF record payload, including CRC byte. */
+#define OMF_MAX_RECORD_PAYLOAD UINT16_C(1021)
+
+
+/** @name OMF Record Types (OMFRECHDR::bType).
+ * @{ */
+/** Record type flag indicating 32-bit record. */
+#define OMF_REC32 UINT8_C(0x01)
+/** Object file header record.
+ * Is followed by a length prefixed string */
+#define OMF_THEADR UINT8_C(0x80)
+/** Comment record.
+ * Is followed by a comment type byte and a commen class byte, thereafter comes
+ * type specific byte sequence. */
+#define OMF_COMENT UINT8_C(0x88)
+/** Local name table referenced by segment and group defintions.
+ * Array of length prefixed strings. Multi record. */
+#define OMF_LNAMES UINT8_C(0x96)
+/** 16-bit segment definition.
+ * Complicated, see TIS docs. */
+#define OMF_SEGDEF16 UINT8_C(0x98)
+/** 32-bit segment definition.
+ * Complicated, see TIS docs. */
+#define OMF_SEGDEF32 UINT8_C(0x99)
+/** Segment group definition.
+ * Starts with an LNAMES index (one or two bytes) of the group name. Followed
+ * by an array which entries consists of a 0xff byte and a segment
+ * defintion index (one or two bytes). */
+#define OMF_GRPDEF UINT8_C(0x9a)
+/** External symbol defintions.
+ * Array where each entry is a length prefixed symbol name string followed by a
+ * one or two byte type number. */
+#define OMF_EXTDEF UINT8_C(0x8c)
+/** 16-but public symbol definitions.
+ * Starts with a group index (one or two bytes) and a segment index (ditto)
+ * which indicates which group/segment the symbols belong to.
+ * Is followed by an array with entries consiting of a length prefixed symbol
+ * name string, a two byte segment offset, and a one or two byte type index. */
+#define OMF_PUBDEF16 UINT8_C(0x90)
+/** 32-but public symbol definitions.
+ * Identical to #OMF_PUBDEF16 except that the symbol offset field is four
+ * byte. */
+#define OMF_PUBDEF32 UINT8_C(0x91)
+/** 16-bit local symbol definitions.
+ * Same format as #OMF_PUBDEF16. */
+#define OMF_LPUBDEF16 UINT8_C(0xb6)
+/** 16-bit local symbol definitions.
+ * Same format as #OMF_PUBDEF32. */
+#define OMF_LPUBDEF32 UINT8_C(0xb7)
+/** Logical enumerated data record (a chunk of raw segment bits).
+ * Starts with the index of the segment it contributes to (one or two bytes) and
+ * is followed by the offset into the segment of the bytes (two bytes).
+ * After that comes the raw data bytes. */
+#define OMF_LEDATA16 UINT8_C(0xa0)
+/** Logical enumerated data record (a chunk of raw segment bits).
+ * Identical to #OMF_LEDATA16 except that is has a the segment offset field is
+ * four bytes. */
+#define OMF_LEDATA32 UINT8_C(0xa1)
+/** 16-bit fixup record.
+ * Complicated, see TIS docs. */
+#define OMF_FIXUPP16 UINT8_C(0x9c)
+/** 32-bit fixup record.
+ * Complicated, see TIS docs. */
+#define OMF_FIXUPP32 UINT8_C(0x9d)
+/** 16-bit line numbers record. */
+#define OMF_LINNUM16 UINT8_C(0x94)
+/** 32-bit line numbers record. */
+#define OMF_LINNUM32 UINT8_C(0x95)
+/** 16-bit object file end record.
+ * Duh! wrong bitfield order.
+ *
+ * Starts with a byte bitfield indicating module type: bit 0 is set if this is a
+ * main program module; bit 1 is set if this is a start address is available;
+ * bits 2 thru 6 are reserved and must be zero; bit 7 is set to indicate
+ * a non-absolute start address.
+ *
+ * When bit 1 is set what follow is: A FIXUPP byte, one or two byte frame datum,
+ * one or two byte target datum, and a 2 byte target displacement. */
+#define OMF_MODEND16 UINT8_C(0x8a)
+/** 32-bit object file end record.
+ * Identical to #OMF_MODEND16 except that is has a 4 byte target
+ * displacement field. */
+#define OMF_MODEND32 UINT8_C(0x8b)
+/** @} */
+
+/** @name OMF COMENT Type Flags
+ * @{ */
+/** Comment type: Don't remove comment when object is manipulated. */
+#define OMF_CTYP_NO_PURGE UINT8_C(0x80)
+/** Comment type: Don't include in object listing. */
+#define OMF_CTYP_NO_LIST UINT8_C(0x40)
+/** @} */
+
+/** @name OMF COMENT Classes
+ * @{ */
+/** Comment class: Dependency file.
+ * Is followed by a dword timestamp (1980 based?) and a length prefix
+ * filename string. */
+#define OMF_CCLS_DEP_FILE UINT8_C(0x88)
+/** Comment class: Link pass separator.
+ * Contains a byte with the value 01 to indicate the linker can stop pass 1
+ * processing now. */
+#define OMF_CCLS_LINK_PASS_SEP UINT8_C(0xa2)
+/** Comment class: Borland type information. */
+#define OMF_CCLS_BORLAND_TYPES UINT8_C(0xe3)
+/** Comment class: Borland symbol information. */
+#define OMF_CCLS_BORLAND_SYMBOLS UINT8_C(0xe6)
+/** Comment class: Borland source file (applies to subsequent LINNUMs). */
+#define OMF_CCLS_BORLAND_SRC_FILE UINT8_C(0xe8)
+/** Comment class: Borland dependency files. */
+#define OMF_CCLS_BORLAND_DEP_FILES UINT8_C(0xe9)
+/** @} */
+
+/** @name OMF SEGDEF Attrib.
+ * @{ */
+#define OMF_SEG_ATTR_ALIGN_ABS (UINT8_C(0) << 5) /**< SEGDEF attrib A: absolute - frame and offset fields present. */
+#define OMF_SEG_ATTR_ALIGN_BYTE (UINT8_C(1) << 5) /**< SEGDEF attrib A: 1-byte alignment. */
+#define OMF_SEG_ATTR_ALIGN_WORD (UINT8_C(2) << 5) /**< SEGDEF attrib A: 2-byte alignment. */
+#define OMF_SEG_ATTR_ALIGN_PARA (UINT8_C(3) << 5) /**< SEGDEF attrib A: 16-byte alignment. */
+#define OMF_SEG_ATTR_ALIGN_PAGE (UINT8_C(4) << 5) /**< SEGDEF attrib A: 4096-byte alignment (or 256-byte). */
+#define OMF_SEG_ATTR_ALIGN_DWORD (UINT8_C(5) << 5) /**< SEGDEF attrib A: 4-byte alignment. */
+#define OMF_SEG_ATTR_ALIGN_6 (UINT8_C(6) << 5) /**< SEGDEF attrib A: not supported (load-time locatable, paragraph aligned). */
+#define OMF_SEG_ATTR_ALIGN_7 (UINT8_C(7) << 5) /**< SEGDEF attrib A: undefined. */
+#define OMF_SEG_ATTR_ALIGN_MASK (UINT8_C(7) << 5) /**< SEGDEF attrib A: Mask for the alignment field. */
+#define OMF_SEG_ATTR_ALIGN_SHIFT 5 /**< SEGDEF attrib A: Shift count for the alignment field. */
+
+#define OMF_SEG_ATTR_COMB_PRIVATE (UINT8_C(0) << 2) /**< SEGDEF attrib C: Private - do not combine with anyone. */
+#define OMF_SEG_ATTR_COMB_1 (UINT8_C(1) << 2) /**< SEGDEF attrib C: Reserved */
+#define OMF_SEG_ATTR_COMB_PUBLIC (UINT8_C(2) << 2) /**< SEGDEF attrib C: Public - append at offset meeting alignment. */
+#define OMF_SEG_ATTR_COMB_3 (UINT8_C(3) << 2) /**< SEGDEF attrib C: Reserved */
+#define OMF_SEG_ATTR_COMB_PUBLIC_4 (UINT8_C(4) << 2) /**< SEGDEF attrib C: Public - append at offset meeting alignment. */
+#define OMF_SEG_ATTR_COMB_STACK (UINT8_C(5) << 2) /**< SEGDEF attrib C: Stack - same as public, but forced byte alignment. */
+#define OMF_SEG_ATTR_COMB_COMMON (UINT8_C(6) << 2) /**< SEGDEF attrib C: Common - overlay using maximum size. */
+#define OMF_SEG_ATTR_COMB_PUBLIC_7 (UINT8_C(5) << 2) /**< SEGDEF attrib C: Public - append at offset meeting alignment. */
+#define OMF_SEG_ATTR_COMB_MASK (UINT8_C(7) << 2) /**< SEGDEF attrib C: Mask for the combination field. */
+#define OMF_SEG_ATTR_COMB_SHIFT 2 /**< SEGDEF attrib C: Shift count for the combination field. */
+#define OMF_SEG_ATTR_BIG UINT8_C(2) /**< SEGDEF attrib B: Big segment 64K / 4GB. */
+#define OMF_SEG_ATTR_USE32 UINT8_C(1) /**< SEGDEF attrib P: Indicates 32-bit data or code. */
+#define OMF_SEG_ATTR_USE16 UINT8_C(0) /**< SEGDEF attrib ~P: Just for spelling out !USE32. */
+/** @} */
+
+
+/** @name OMF FIXUPP Locations.
+ * @{ */
+#define OMF_FIX_LOC_8BIT_LOW_BYTE UINT8_C(0) /**< FIXUP location: low byte (offset or displacement). */
+#define OMF_FIX_LOC_16BIT_OFFSET UINT8_C(1) /**< FIXUP location: 16-bit offset. */
+#define OMF_FIX_LOC_16BIT_SEGMENT UINT8_C(2) /**< FIXUP location: 16-bit segment. */
+#define OMF_FIX_LOC_1616FAR UINT8_C(3) /**< FIXUP location: 16:16 far pointer. */
+#define OMF_FIX_LOC_8BIT_HIGH_BYTE UINT8_C(4) /**< FIXUP location: high byte (offset). Not supported by MS/IBM. */
+#define OMF_FIX_LOC_16BIT_OFFSET_LDR UINT8_C(5) /**< FIXUP location: 16-bit loader resolved offset, same a 1 for linker. PharLab conflict. */
+#define OMF_FIX_LOC_RESERVED_FAR1632 UINT8_C(6) /**< FIXUP location: PharLab 16:32 far pointers, not defined by MS/IBM. */
+#define OMF_FIX_LOC_RESERVED_7 UINT8_C(7) /**< FIXUP location: Not defined. */
+#define OMF_FIX_LOC_RESERVED_8 UINT8_C(8) /**< FIXUP location: Not defined. */
+#define OMF_FIX_LOC_32BIT_OFFSET UINT8_C(9) /**< FIXUP location: 32-bit offset. */
+#define OMF_FIX_LOC_RESERVED_10 UINT8_C(10) /**< FIXUP location: Not defined. */
+#define OMF_FIX_LOC_1632FAR UINT8_C(11) /**< FIXUP location: 16:32 far pointer. */
+#define OMF_FIX_LOC_RESERVED_12 UINT8_C(12) /**< FIXUP location: Not defined. */
+#define OMF_FIX_LOC_32BIT_OFFSET_LDR UINT8_C(13) /**< FIXUP location: 32-bit loader resolved offset, same as 9 for linker. */
+/** @} */
+/** @name OMF FIXUPP Targets
+ * @{ */
+#define OMF_FIX_T_SEGDEF UINT8_C(0) /**< FIXUP target: SEGDEF index. */
+#define OMF_FIX_T_GRPDEF UINT8_C(1) /**< FIXUP target: GRPDEF index. */
+#define OMF_FIX_T_EXTDEF UINT8_C(2) /**< FIXUP target: EXTDEF index. */
+#define OMF_FIX_T_FRAME_NO UINT8_C(3) /**< FIXUP target: Explicit frame number, not supported by MS/IBM. */
+#define OMF_FIX_T_SEGDEF_NO_DISP UINT8_C(4) /**< FIXUP target: SEGDEF index only, displacement take as 0. */
+#define OMF_FIX_T_GRPDEF_NO_DISP UINT8_C(5) /**< FIXUP target: GRPDEF index only, displacement take as 0. */
+#define OMF_FIX_T_EXTDEF_NO_DISP UINT8_C(6) /**< FIXUP target: EXTDEF index only, displacement take as 0. */
+/** @} */
+/** @name OMF FIXUPP Frames
+ * @{ */
+#define OMF_FIX_F_SEGDEF UINT8_C(0) /**< FIXUP frame: SEGDEF index. */
+#define OMF_FIX_F_GRPDEF UINT8_C(1) /**< FIXUP frame: GRPDEF index. */
+#define OMF_FIX_F_EXTDEF UINT8_C(2) /**< FIXUP frame: EXTDEF index. */
+#define OMF_FIX_F_FRAME_NO UINT8_C(3) /**< FIXUP frame: Explicit frame number, not supported by any linkers. */
+#define OMF_FIX_F_LXDATA_SEG UINT8_C(4) /**< FIXUP frame: Determined from the data being fixed up. (No index field.) */
+#define OMF_FIX_F_TARGET_SEG UINT8_C(5) /**< FIXUP frame: Determined from the target. (No index field.) */
+#define OMF_FIX_F_RESERVED_6 UINT8_C(6) /**< FIXUP frame: Reserved. */
+/** @} */
+
+
+/** @} */
+#endif /* !IPRT_INCLUDED_formats_omf_h */
+