165 lines
4.9 KiB
C
165 lines
4.9 KiB
C
/* PowerPC NLM (NetWare Loadable Module) support for BFD.
|
|
Copyright (C) 1994-2014 Free Software Foundation, Inc.
|
|
|
|
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#ifdef OLDFORMAT
|
|
|
|
/* The format of a PowerPC NLM changed. These structures are only
|
|
used in the old format. */
|
|
|
|
/* A PowerPC NLM starts with an instance of this structure. */
|
|
|
|
struct nlm32_powerpc_external_prefix_header
|
|
{
|
|
/* Signature. Must be "AppleNLM". */
|
|
char signature[8];
|
|
/* Version number. Current value is 1. */
|
|
unsigned char headerVersion[4];
|
|
/* ??. Should be set to 0. */
|
|
unsigned char origins[4];
|
|
/* File creation date in standard Unix time format (seconds since
|
|
1/1/70). */
|
|
unsigned char date[4];
|
|
};
|
|
|
|
#define NLM32_POWERPC_SIGNATURE "AppleNLM"
|
|
#define NLM32_POWERPC_HEADER_VERSION 1
|
|
|
|
/* The external format of a PowerPC NLM reloc. This is the same as an
|
|
XCOFF dynamic reloc. */
|
|
|
|
struct nlm32_powerpc_external_reloc
|
|
{
|
|
/* Address. */
|
|
unsigned char l_vaddr[4];
|
|
/* Symbol table index. This is 0 for .text and 1 for .data. 2
|
|
means .bss, but I don't know if it is used. In XCOFF, larger
|
|
numbers are indices into the dynamic symbol table, but they are
|
|
presumably not used in an NLM. */
|
|
unsigned char l_symndx[4];
|
|
/* Relocation type. */
|
|
unsigned char l_rtype[2];
|
|
/* Section number being relocated. */
|
|
unsigned char l_rsecnm[2];
|
|
};
|
|
|
|
#endif /* OLDFORMAT */
|
|
|
|
/* The external format of the fixed header. */
|
|
|
|
typedef struct nlm32_powerpc_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[24];
|
|
|
|
/* The version of the header. At this time, the highest version number
|
|
is 4. */
|
|
|
|
unsigned char version[4];
|
|
|
|
/* 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[14];
|
|
|
|
/* Padding to make it come out correct. */
|
|
|
|
unsigned char pad1[2];
|
|
|
|
/* The byte offset of the code image from the start of the file. */
|
|
|
|
unsigned char codeImageOffset[4];
|
|
|
|
/* The size of the code image, in bytes. */
|
|
|
|
unsigned char codeImageSize[4];
|
|
|
|
/* The byte offset of the data image from the start of the file. */
|
|
|
|
unsigned char dataImageOffset[4];
|
|
|
|
/* The size of the data image, in bytes. */
|
|
|
|
unsigned char dataImageSize[4];
|
|
|
|
/* 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[4];
|
|
|
|
/* 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[4];
|
|
|
|
/* The size of the custom data, in bytes. */
|
|
|
|
unsigned char customDataSize[4];
|
|
|
|
/* 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[4];
|
|
|
|
/* The number of module dependencies at the moduleDependencyOffset. */
|
|
|
|
unsigned char numberOfModuleDependencies[4];
|
|
|
|
/* The byte offset of the relocation fixup data from the start of the file */
|
|
|
|
unsigned char relocationFixupOffset[4];
|
|
|
|
unsigned char numberOfRelocationFixups[4];
|
|
|
|
unsigned char externalReferencesOffset[4];
|
|
|
|
unsigned char numberOfExternalReferences[4];
|
|
|
|
unsigned char publicsOffset[4];
|
|
|
|
unsigned char numberOfPublics[4];
|
|
|
|
/* 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[4];
|
|
|
|
unsigned char numberOfDebugRecords[4];
|
|
|
|
unsigned char codeStartOffset[4];
|
|
|
|
unsigned char exitProcedureOffset[4];
|
|
|
|
unsigned char checkUnloadProcedureOffset[4];
|
|
|
|
unsigned char moduleType[4];
|
|
|
|
unsigned char flags[4];
|
|
|
|
} Nlm32_powerpc_External_Fixed_Header;
|