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+/* PowerPC NLM (NetWare Loadable Module) support for BFD.
+ Copyright (C) 1994, 2005, 2010 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;