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Diffstat (limited to 'include/nlm/alpha-ext.h')
| -rw-r--r-- | include/nlm/alpha-ext.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/include/nlm/alpha-ext.h b/include/nlm/alpha-ext.h new file mode 100644 index 0000000..37199dd --- /dev/null +++ b/include/nlm/alpha-ext.h @@ -0,0 +1,166 @@ +/* Alpha NLM (NetWare Loadable Module) support for BFD. + Copyright (C) 1993 Free Software Foundation, Inc. + By Ian Lance Taylor, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* An Alpha NLM starts with an instance of this structure. */ + +struct nlm32_alpha_external_prefix_header +{ + /* Magic number. Must be NLM32_ALPHA_MAGIC. */ + unsigned char magic[4]; + /* Format descriptor. Current value is 2. */ + unsigned char format[4]; + /* Size of prefix header. */ + unsigned char size[4]; + /* Padding. */ + unsigned char pad1[4]; + /* More fields may be added later, supposedly. */ +}; + +/* The external format of an Alpha NLM reloc. This is the same as an + Alpha ECOFF reloc. */ + +struct nlm32_alpha_external_reloc +{ + unsigned char r_vaddr[8]; + unsigned char r_symndx[4]; + unsigned char r_bits[4]; +}; + +/* Constants to unpack the r_bits field of a reloc. */ + +#define RELOC_BITS0_TYPE_LITTLE 0xff +#define RELOC_BITS0_TYPE_SH_LITTLE 0 + +#define RELOC_BITS1_EXTERN_LITTLE 0x01 + +#define RELOC_BITS1_OFFSET_LITTLE 0x7e +#define RELOC_BITS1_OFFSET_SH_LITTLE 1 + +#define RELOC_BITS1_RESERVED_LITTLE 0x80 +#define RELOC_BITS1_RESERVED_SH_LITTLE 7 +#define RELOC_BITS2_RESERVED_LITTLE 0xff +#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1 +#define RELOC_BITS3_RESERVED_LITTLE 0x03 +#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9 + +#define RELOC_BITS3_SIZE_LITTLE 0xfc +#define RELOC_BITS3_SIZE_SH_LITTLE 2 + +/* The external format of the fixed header. */ + +typedef struct nlm32_alpha_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_alpha_External_Fixed_Header; |