256 lines
7.8 KiB
C
256 lines
7.8 KiB
C
/* NLM (NetWare Loadable Module) support for BFD.
|
|
Copyright (C) 1993 Free Software Foundation, Inc.
|
|
|
|
Written by Fred Fish @ Cygnus Support
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
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. */
|
|
|
|
|
|
/* This file is part of NLM support for BFD, and contains the portions
|
|
that describe how NLM is represented externally by the BFD library.
|
|
I.E. it describes the in-file representation of NLM. It requires
|
|
the nlm/common.h file which contains the portions that are common to
|
|
both the internal and external representations.
|
|
|
|
Note that an NLM header consists of three parts:
|
|
|
|
(1) A fixed length header that has specific fields of known length,
|
|
at specific offsets in the file.
|
|
|
|
(2) A variable length header that has specific fields in a specific
|
|
order, but some fields may be variable length.
|
|
|
|
(3) A auxiliary header that has various optional fields in no specific
|
|
order. There is no way to identify the end of the auxiliary headers
|
|
except by finding a header without a recognized 'stamp'.
|
|
|
|
*/
|
|
|
|
/* NLM Header */
|
|
|
|
typedef struct nlmNAME(external_fixed_header)
|
|
{
|
|
|
|
/* The signature field identifies the file as an NLM. It must contain
|
|
the signature string, which depends upon the NLM target. */
|
|
|
|
unsigned char signature[NLM_SIGNATURE_SIZE];
|
|
|
|
/* The version of the header. At this time, the highest version number
|
|
is 4. */
|
|
|
|
unsigned char version[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The name of the module, which must be a DOS name (1-8 characters followed
|
|
by a period and a 1-3 character extension). The first byte is the byte
|
|
length of the name and the last byte is a null terminator byte. This
|
|
field is fixed length, and any unused bytes should be null bytes. The
|
|
value is set by the OUTPUT keyword to NLMLINK. */
|
|
|
|
unsigned char moduleName[NLM_MODULE_NAME_SIZE];
|
|
|
|
/* The byte offset of the code image from the start of the file. */
|
|
|
|
unsigned char codeImageOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The size of the code image, in bytes. */
|
|
|
|
unsigned char codeImageSize[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The byte offset of the data image from the start of the file. */
|
|
|
|
unsigned char dataImageOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The size of the data image, in bytes. */
|
|
|
|
unsigned char dataImageSize[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The size of the uninitialized data region that the loader is to be
|
|
allocated at load time. Uninitialized data follows the initialized
|
|
data in the NLM address space. */
|
|
|
|
unsigned char uninitializedDataSize[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The byte offset of the custom data from the start of the file. The
|
|
custom data is set by the CUSTOM keyword to NLMLINK. It is possible
|
|
for this to be EOF if there is no custom data. */
|
|
|
|
unsigned char customDataOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The size of the custom data, in bytes. */
|
|
|
|
unsigned char customDataSize[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The byte offset of the module dependencies from the start of the file.
|
|
The module dependencies are determined by the MODULE keyword in
|
|
NLMLINK. */
|
|
|
|
unsigned char moduleDependencyOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The number of module dependencies at the moduleDependencyOffset. */
|
|
|
|
unsigned char numberOfModuleDependencies[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The byte offset of the relocation fixup data from the start of the file */
|
|
|
|
unsigned char relocationFixupOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char numberOfRelocationFixups[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char externalReferencesOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char numberOfExternalReferences[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char publicsOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char numberOfPublics[NLM_TARGET_LONG_SIZE];
|
|
|
|
/* The byte offset of the internal debug info from the start of the file.
|
|
It is possible for this to be EOF if there is no debug info. */
|
|
|
|
unsigned char debugInfoOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char numberOfDebugRecords[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char codeStartOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char exitProcedureOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char checkUnloadProcedureOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char moduleType[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char flags[NLM_TARGET_LONG_SIZE];
|
|
|
|
} NlmNAME(External_Fixed_Header);
|
|
|
|
/* The version header is one of the optional auxiliary headers and
|
|
follows the fixed length and variable length NLM headers. */
|
|
|
|
typedef struct nlmNAME(external_version_header)
|
|
{
|
|
|
|
/* The header is recognized by "VeRsIoN#" in the stamp field. */
|
|
char stamp[8];
|
|
|
|
unsigned char majorVersion[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char minorVersion[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char revision[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char year[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char month[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char day[NLM_TARGET_LONG_SIZE];
|
|
|
|
} NlmNAME(External_Version_Header);
|
|
|
|
|
|
typedef struct nlmNAME(external_copyright_header)
|
|
{
|
|
|
|
/* The header is recognized by "CoPyRiGhT=" in the stamp field. */
|
|
|
|
char stamp[10];
|
|
|
|
unsigned char copyrightMessageLength[1];
|
|
|
|
/* There is a variable length field here called 'copyrightMessage'
|
|
that is the length specified by copyrightMessageLength. */
|
|
|
|
} NlmNAME(External_Copyright_Header);
|
|
|
|
|
|
typedef struct nlmNAME(external_extended_header)
|
|
{
|
|
|
|
/* The header is recognized by "MeSsAgEs" in the stamp field. */
|
|
|
|
char stamp[8];
|
|
|
|
unsigned char languageID[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char messageFileOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char messageFileLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char messageCount[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char helpFileOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char helpFileLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char RPCDataOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char RPCDataLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedCodeOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedCodeLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedDataOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedDataLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedRelocationFixupOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedRelocationFixupCount[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedExternalReferenceOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedExternalReferenceCount[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedPublicsOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedPublicsCount[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char sharedInitializationOffset[NLM_TARGET_ADDRESS_SIZE];
|
|
|
|
unsigned char SharedExitProcedureOffset[NLM_TARGET_ADDRESS_SIZE];
|
|
|
|
unsigned char productID[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char reserved0[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char reserved1[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char reserved2[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char reserved3[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char reserved4[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char reserved5[NLM_TARGET_LONG_SIZE];
|
|
|
|
} NlmNAME(External_Extended_Header);
|
|
|
|
|
|
typedef struct nlmNAME(external_custom_header)
|
|
{
|
|
|
|
/* The header is recognized by "CuStHeAd" in the stamp field. */
|
|
char stamp[8];
|
|
|
|
unsigned char dataLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char debugRecOffset[NLM_TARGET_LONG_SIZE];
|
|
|
|
unsigned char debugRecLength[NLM_TARGET_LONG_SIZE];
|
|
|
|
} NlmNAME(External_Custom_Header);
|