diff options
Diffstat (limited to 'bfd/nlmcode.h')
| -rw-r--r-- | bfd/nlmcode.h | 1982 |
1 files changed, 0 insertions, 1982 deletions
diff --git a/bfd/nlmcode.h b/bfd/nlmcode.h deleted file mode 100644 index ac7abaf..0000000 --- a/bfd/nlmcode.h +++ /dev/null @@ -1,1982 +0,0 @@ -/* NLM (NetWare Loadable Module) executable support for BFD. - Copyright (C) 1993-2018 Free Software Foundation, Inc. - - Written by Fred Fish @ Cygnus Support, using ELF support as the - template. - - 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. */ - -#include "sysdep.h" -#include "bfd.h" -#include "libbfd.h" -#include "libnlm.h" - -/* The functions in this file do not use the names they appear to use. - This file is actually compiled multiple times, once for each size - of NLM target we are using. At each size we use a different name, - constructed by the macro nlmNAME. For example, the function which - is named nlm_symbol_type below is actually named nlm32_symbol_type - in the final executable. */ - -#define Nlm_External_Fixed_Header NlmNAME (External_Fixed_Header) -#define Nlm_External_Version_Header NlmNAME (External_Version_Header) -#define Nlm_External_Copyright_Header NlmNAME (External_Copyright_Header) -#define Nlm_External_Extended_Header NlmNAME (External_Extended_Header) -#define Nlm_External_Custom_Header NlmNAME (External_Custom_Header) -#define Nlm_External_Cygnus_Ext_Header NlmNAME (External_Cygnus_Ext_Header) - -#define nlm_symbol_type nlmNAME (symbol_type) -#define nlm_get_symtab_upper_bound nlmNAME (get_symtab_upper_bound) -#define nlm_canonicalize_symtab nlmNAME (canonicalize_symtab) -#define nlm_make_empty_symbol nlmNAME (make_empty_symbol) -#define nlm_print_symbol nlmNAME (print_symbol) -#define nlm_get_symbol_info nlmNAME (get_symbol_info) -#define nlm_get_reloc_upper_bound nlmNAME (get_reloc_upper_bound) -#define nlm_canonicalize_reloc nlmNAME (canonicalize_reloc) -#define nlm_object_p nlmNAME (object_p) -#define nlm_set_section_contents nlmNAME (set_section_contents) -#define nlm_write_object_contents nlmNAME (write_object_contents) - -#define nlm_swap_fixed_header_in(abfd,src,dst) \ - (nlm_swap_fixed_header_in_func (abfd)) (abfd, src, dst) -#define nlm_swap_fixed_header_out(abfd,src,dst) \ - (nlm_swap_fixed_header_out_func (abfd)) (abfd, src, dst) - -/* Should perhaps use put_offset, put_word, etc. For now, the two versions - can be handled by explicitly specifying 32 bits or "the long type". */ -#if ARCH_SIZE == 64 -#define put_word H_PUT_64 -#define get_word H_GET_64 -#endif -#if ARCH_SIZE == 32 -#define put_word H_PUT_32 -#define get_word H_GET_32 -#endif - -/* Read and swap in the variable length header. All the fields must - exist in the NLM, and must exist in the order they are read here. */ - -static bfd_boolean -nlm_swap_variable_header_in (bfd *abfd) -{ - unsigned char temp[NLM_TARGET_LONG_SIZE]; - bfd_size_type amt; - - /* Read the description length and text members. */ - amt = sizeof (nlm_variable_header (abfd)->descriptionLength); - if (bfd_bread ((void *) &nlm_variable_header (abfd)->descriptionLength, - amt, abfd) != amt) - return FALSE; - amt = nlm_variable_header (abfd)->descriptionLength + 1; - if (bfd_bread ((void *) nlm_variable_header (abfd)->descriptionText, - amt, abfd) != amt) - return FALSE; - - /* Read and convert the stackSize field. */ - amt = sizeof (temp); - if (bfd_bread ((void *) temp, amt, abfd) != amt) - return FALSE; - nlm_variable_header (abfd)->stackSize = get_word (abfd, (bfd_byte *) temp); - - /* Read and convert the reserved field. */ - amt = sizeof (temp); - if (bfd_bread ((void *) temp, amt, abfd) != amt) - return FALSE; - nlm_variable_header (abfd)->reserved = get_word (abfd, (bfd_byte *) temp); - - /* Read the oldThreadName field. This field is a fixed length string. */ - amt = sizeof (nlm_variable_header (abfd)->oldThreadName); - if (bfd_bread ((void *) nlm_variable_header (abfd)->oldThreadName, - amt, abfd) != amt) - return FALSE; - - /* Read the screen name length and text members. */ - amt = sizeof (nlm_variable_header (abfd)->screenNameLength); - if (bfd_bread ((void *) & nlm_variable_header (abfd)->screenNameLength, - amt, abfd) != amt) - return FALSE; - amt = nlm_variable_header (abfd)->screenNameLength + 1; - if (bfd_bread ((void *) nlm_variable_header (abfd)->screenName, - amt, abfd) != amt) - return FALSE; - - /* Read the thread name length and text members. */ - amt = sizeof (nlm_variable_header (abfd)->threadNameLength); - if (bfd_bread ((void *) & nlm_variable_header (abfd)->threadNameLength, - amt, abfd) != amt) - return FALSE; - amt = nlm_variable_header (abfd)->threadNameLength + 1; - if (bfd_bread ((void *) nlm_variable_header (abfd)->threadName, - amt, abfd) != amt) - return FALSE; - return TRUE; -} - -/* Add a section to the bfd. */ - -static bfd_boolean -add_bfd_section (bfd *abfd, - char *name, - file_ptr offset, - bfd_size_type size, - flagword flags) -{ - asection *newsect; - - newsect = bfd_make_section_with_flags (abfd, name, flags); - if (newsect == NULL) - return FALSE; - - newsect->vma = 0; /* NLM's are relocatable. */ - newsect->size = size; - newsect->filepos = offset; - newsect->alignment_power = bfd_log2 ((bfd_vma) 0); /* FIXME */ - - return TRUE; -} - -/* Read and swap in the contents of all the auxiliary headers. Because of - the braindead design, we have to do strcmps on strings of indeterminate - length to figure out what each auxiliary header is. Even worse, we have - no way of knowing how many auxiliary headers there are or where the end - of the auxiliary headers are, except by finding something that doesn't - look like a known auxiliary header. This means that the first new type - of auxiliary header added will break all existing tools that don't - recognize it. */ - -static bfd_boolean -nlm_swap_auxiliary_headers_in (bfd *abfd) -{ - char tempstr[16]; - file_ptr position; - bfd_size_type amt; - - for (;;) - { - position = bfd_tell (abfd); - amt = sizeof (tempstr); - if (bfd_bread ((void *) tempstr, amt, abfd) != amt) - return FALSE; - if (bfd_seek (abfd, position, SEEK_SET) != 0) - return FALSE; - if (CONST_STRNEQ (tempstr, "VeRsIoN#")) - { - Nlm_External_Version_Header thdr; - - amt = sizeof (thdr); - if (bfd_bread ((void *) &thdr, amt, abfd) != amt) - return FALSE; - memcpy (nlm_version_header (abfd)->stamp, thdr.stamp, - sizeof (thdr.stamp)); - nlm_version_header (abfd)->majorVersion = - get_word (abfd, (bfd_byte *) thdr.majorVersion); - nlm_version_header (abfd)->minorVersion = - get_word (abfd, (bfd_byte *) thdr.minorVersion); - nlm_version_header (abfd)->revision = - get_word (abfd, (bfd_byte *) thdr.revision); - nlm_version_header (abfd)->year = - get_word (abfd, (bfd_byte *) thdr.year); - nlm_version_header (abfd)->month = - get_word (abfd, (bfd_byte *) thdr.month); - nlm_version_header (abfd)->day = - get_word (abfd, (bfd_byte *) thdr.day); - } - else if (CONST_STRNEQ (tempstr, "MeSsAgEs")) - { - Nlm_External_Extended_Header thdr; - - amt = sizeof (thdr); - if (bfd_bread ((void *) &thdr, amt, abfd) != amt) - return FALSE; - memcpy (nlm_extended_header (abfd)->stamp, thdr.stamp, - sizeof (thdr.stamp)); - nlm_extended_header (abfd)->languageID = - get_word (abfd, (bfd_byte *) thdr.languageID); - nlm_extended_header (abfd)->messageFileOffset = - get_word (abfd, (bfd_byte *) thdr.messageFileOffset); - nlm_extended_header (abfd)->messageFileLength = - get_word (abfd, (bfd_byte *) thdr.messageFileLength); - nlm_extended_header (abfd)->messageCount = - get_word (abfd, (bfd_byte *) thdr.messageCount); - nlm_extended_header (abfd)->helpFileOffset = - get_word (abfd, (bfd_byte *) thdr.helpFileOffset); - nlm_extended_header (abfd)->helpFileLength = - get_word (abfd, (bfd_byte *) thdr.helpFileLength); - nlm_extended_header (abfd)->RPCDataOffset = - get_word (abfd, (bfd_byte *) thdr.RPCDataOffset); - nlm_extended_header (abfd)->RPCDataLength = - get_word (abfd, (bfd_byte *) thdr.RPCDataLength); - nlm_extended_header (abfd)->sharedCodeOffset = - get_word (abfd, (bfd_byte *) thdr.sharedCodeOffset); - nlm_extended_header (abfd)->sharedCodeLength = - get_word (abfd, (bfd_byte *) thdr.sharedCodeLength); - nlm_extended_header (abfd)->sharedDataOffset = - get_word (abfd, (bfd_byte *) thdr.sharedDataOffset); - nlm_extended_header (abfd)->sharedDataLength = - get_word (abfd, (bfd_byte *) thdr.sharedDataLength); - nlm_extended_header (abfd)->sharedRelocationFixupOffset = - get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupOffset); - nlm_extended_header (abfd)->sharedRelocationFixupCount = - get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupCount); - nlm_extended_header (abfd)->sharedExternalReferenceOffset = - get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceOffset); - nlm_extended_header (abfd)->sharedExternalReferenceCount = - get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceCount); - nlm_extended_header (abfd)->sharedPublicsOffset = - get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset); - nlm_extended_header (abfd)->sharedPublicsCount = - get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount); - nlm_extended_header (abfd)->sharedDebugRecordOffset = - get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset); - nlm_extended_header (abfd)->sharedDebugRecordCount = - get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount); - nlm_extended_header (abfd)->SharedInitializationOffset = - get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset); - nlm_extended_header (abfd)->SharedExitProcedureOffset = - get_word (abfd, (bfd_byte *) thdr.SharedExitProcedureOffset); - nlm_extended_header (abfd)->productID = - get_word (abfd, (bfd_byte *) thdr.productID); - nlm_extended_header (abfd)->reserved0 = - get_word (abfd, (bfd_byte *) thdr.reserved0); - nlm_extended_header (abfd)->reserved1 = - get_word (abfd, (bfd_byte *) thdr.reserved1); - nlm_extended_header (abfd)->reserved2 = - get_word (abfd, (bfd_byte *) thdr.reserved2); - nlm_extended_header (abfd)->reserved3 = - get_word (abfd, (bfd_byte *) thdr.reserved3); - nlm_extended_header (abfd)->reserved4 = - get_word (abfd, (bfd_byte *) thdr.reserved4); - nlm_extended_header (abfd)->reserved5 = - get_word (abfd, (bfd_byte *) thdr.reserved5); - } - else if (CONST_STRNEQ (tempstr, "CoPyRiGhT=")) - { - amt = sizeof (nlm_copyright_header (abfd)->stamp); - if (bfd_bread ((void *) nlm_copyright_header (abfd)->stamp, - amt, abfd) != amt) - return FALSE; - if (bfd_bread ((void *) &(nlm_copyright_header (abfd) - ->copyrightMessageLength), - (bfd_size_type) 1, abfd) != 1) - return FALSE; - /* The copyright message is a variable length string. */ - amt = nlm_copyright_header (abfd)->copyrightMessageLength + 1; - if (bfd_bread ((void *) nlm_copyright_header (abfd)->copyrightMessage, - amt, abfd) != amt) - return FALSE; - } - else if (CONST_STRNEQ (tempstr, "CuStHeAd")) - { - Nlm_External_Custom_Header thdr; - bfd_size_type hdrLength; - file_ptr dataOffset; - bfd_size_type dataLength; - char dataStamp[8]; - void * hdr; - - /* Read the stamp ("CuStHeAd"). */ - amt = sizeof (thdr.stamp); - if (bfd_bread ((void *) thdr.stamp, amt, abfd) != amt) - return FALSE; - /* Read the length of this custom header. */ - amt = sizeof (thdr.length); - if (bfd_bread ((void *) thdr.length, amt, abfd) != amt) - return FALSE; - hdrLength = get_word (abfd, (bfd_byte *) thdr.length); - /* Read further fields if we have them. */ - if (hdrLength < NLM_TARGET_LONG_SIZE) - dataOffset = 0; - else - { - amt = sizeof (thdr.dataOffset); - if (bfd_bread ((void *) thdr.dataOffset, amt, abfd) != amt) - return FALSE; - dataOffset = get_word (abfd, (bfd_byte *) thdr.dataOffset); - } - if (hdrLength < 2 * NLM_TARGET_LONG_SIZE) - dataLength = 0; - else - { - amt = sizeof (thdr.dataLength); - if (bfd_bread ((void *) thdr.dataLength, amt, abfd) != amt) - return FALSE; - dataLength = get_word (abfd, (bfd_byte *) thdr.dataLength); - } - if (hdrLength < 2 * NLM_TARGET_LONG_SIZE + 8) - memset (dataStamp, 0, sizeof (dataStamp)); - else - { - amt = sizeof (dataStamp); - if (bfd_bread ((void *) dataStamp, amt, abfd) != amt) - return FALSE; - } - - /* Read the rest of the header, if any. */ - if (hdrLength <= 2 * NLM_TARGET_LONG_SIZE + 8) - { - hdr = NULL; - hdrLength = 0; - } - else - { - hdrLength -= 2 * NLM_TARGET_LONG_SIZE + 8; - hdr = bfd_alloc (abfd, hdrLength); - if (hdr == NULL) - return FALSE; - if (bfd_bread (hdr, hdrLength, abfd) != hdrLength) - return FALSE; - } - - /* If we have found a Cygnus header, process it. Otherwise, - just save the associated data without trying to interpret - it. */ - if (CONST_STRNEQ (dataStamp, "CyGnUsEx")) - { - file_ptr pos; - bfd_byte *contents; - bfd_byte *p, *pend; - - /* See PR 21840 for a reproducer. */ - if (hdrLength != 0 || hdr != NULL) - return FALSE; - - pos = bfd_tell (abfd); - if (bfd_seek (abfd, dataOffset, SEEK_SET) != 0) - return FALSE; - contents = bfd_alloc (abfd, dataLength); - if (contents == NULL) - return FALSE; - if (bfd_bread (contents, dataLength, abfd) != dataLength) - return FALSE; - if (bfd_seek (abfd, pos, SEEK_SET) != 0) - return FALSE; - - LITMEMCPY (nlm_cygnus_ext_header (abfd), "CyGnUsEx"); - nlm_cygnus_ext_header (abfd)->offset = dataOffset; - nlm_cygnus_ext_header (abfd)->length = dataLength; - - /* This data this header points to provides a list of - the sections which were in the original object file - which was converted to become an NLM. We locate - those sections and add them to the BFD. Note that - this is likely to create a second .text, .data and - .bss section; retrieving the sections by name will - get the actual NLM sections, which is what we want to - happen. The sections from the original file, which - may be subsets of the NLM section, can only be found - using bfd_map_over_sections. */ - p = contents; - pend = p + dataLength; - while (p < pend) - { - char *name; - size_t l; - file_ptr filepos; - bfd_size_type size; - asection *newsec; - - /* The format of this information is - null terminated section name - zeroes to adjust to 4 byte boundary - 4 byte section data file pointer - 4 byte section size. */ - - name = (char *) p; - l = strlen (name) + 1; - l = (l + 3) &~ (size_t) 3; - p += l; - filepos = H_GET_32 (abfd, p); - p += 4; - size = H_GET_32 (abfd, p); - p += 4; - - newsec = bfd_make_section_anyway (abfd, name); - if (newsec == NULL) - return FALSE; - newsec->size = size; - if (filepos != 0) - { - newsec->filepos = filepos; - newsec->flags |= SEC_HAS_CONTENTS; - } - } - } - else - { - memcpy (nlm_custom_header (abfd)->stamp, thdr.stamp, - sizeof (thdr.stamp)); - nlm_custom_header (abfd)->hdrLength = hdrLength; - nlm_custom_header (abfd)->dataOffset = dataOffset; - nlm_custom_header (abfd)->dataLength = dataLength; - memcpy (nlm_custom_header (abfd)->dataStamp, dataStamp, - sizeof (dataStamp)); - nlm_custom_header (abfd)->hdr = hdr; - } - } - else - break; - } - return TRUE; -} - -const bfd_target * -nlm_object_p (bfd *abfd) -{ - struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd); - bfd_boolean (*backend_object_p) (bfd *); - void * x_fxdhdr = NULL; - Nlm_Internal_Fixed_Header *i_fxdhdrp; - struct nlm_obj_tdata *new_tdata = NULL; - const char *signature; - enum bfd_architecture arch; - bfd_size_type amt; - - /* Some NLM formats have a prefix before the standard NLM fixed - header. */ - backend_object_p = nlm_backend_object_p_func (abfd); - if (backend_object_p) - { - if (!(*backend_object_p) (abfd)) - goto got_wrong_format_error; - } - - /* Read in the fixed length portion of the NLM header in external format. */ - amt = nlm_fixed_header_size (abfd); - x_fxdhdr = bfd_malloc (amt); - if (x_fxdhdr == NULL) - goto got_no_match; - - if (bfd_bread ((void *) x_fxdhdr, amt, abfd) != amt) - { - if (bfd_get_error () != bfd_error_system_call) - goto got_wrong_format_error; - else - goto got_no_match; - } - - /* Allocate an instance of the nlm_obj_tdata structure and hook it up to - the tdata pointer in the bfd. */ - amt = sizeof (struct nlm_obj_tdata); - new_tdata = bfd_zalloc (abfd, amt); - if (new_tdata == NULL) - goto got_no_match; - - nlm_tdata (abfd) = new_tdata; - - i_fxdhdrp = nlm_fixed_header (abfd); - nlm_swap_fixed_header_in (abfd, x_fxdhdr, i_fxdhdrp); - free (x_fxdhdr); - x_fxdhdr = NULL; - - /* Check to see if we have an NLM file for this backend by matching - the NLM signature. */ - signature = nlm_signature (abfd); - if (signature != NULL - && *signature != '\0' - && strncmp ((char *) i_fxdhdrp->signature, signature, - NLM_SIGNATURE_SIZE) != 0) - goto got_wrong_format_error; - - /* There's no supported way to discover the endianness of an NLM, so test for - a sane version number after doing byte swapping appropriate for this - XVEC. (Hack alert!) */ - if (i_fxdhdrp->version > 0xFFFF) - goto got_wrong_format_error; - - /* There's no supported way to check for 32 bit versus 64 bit addresses, - so ignore this distinction for now. (FIXME) */ - /* Swap in the rest of the required header. */ - if (!nlm_swap_variable_header_in (abfd)) - { - if (bfd_get_error () != bfd_error_system_call) - goto got_wrong_format_error; - else - goto got_no_match; - } - - /* Add the sections supplied by all NLM's, and then read in the - auxiliary headers. Reading the auxiliary headers may create - additional sections described in the cygnus_ext header. - From this point on we assume that we have an NLM, and do not - treat errors as indicating the wrong format. */ - if (!add_bfd_section (abfd, NLM_CODE_NAME, - i_fxdhdrp->codeImageOffset, - i_fxdhdrp->codeImageSize, - (SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_RELOC)) - || !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME, - i_fxdhdrp->dataImageOffset, - i_fxdhdrp->dataImageSize, - (SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_RELOC)) - || !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, - (file_ptr) 0, - i_fxdhdrp->uninitializedDataSize, - SEC_ALLOC)) - goto got_no_match; - - if (!nlm_swap_auxiliary_headers_in (abfd)) - goto got_no_match; - - if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0 - || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) - abfd->flags |= HAS_RELOC; - if (nlm_fixed_header (abfd)->numberOfPublics != 0 - || nlm_fixed_header (abfd)->numberOfDebugRecords != 0 - || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) - abfd->flags |= HAS_SYMS; - - arch = nlm_architecture (abfd); - if (arch != bfd_arch_unknown) - bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0); - - abfd->flags |= EXEC_P; - bfd_get_start_address (abfd) = nlm_fixed_header (abfd)->codeStartOffset; - - return abfd->xvec; - -got_wrong_format_error: - bfd_set_error (bfd_error_wrong_format); -got_no_match: - nlm_tdata (abfd) = preserved_tdata; - if (new_tdata != NULL) - bfd_release (abfd, new_tdata); - if (x_fxdhdr != NULL) - free (x_fxdhdr); - - return NULL; -} - -/* Swap and write out the variable length header. All the fields must - exist in the NLM, and must exist in this order. */ - -static bfd_boolean -nlm_swap_variable_header_out (bfd *abfd) -{ - bfd_byte temp[NLM_TARGET_LONG_SIZE]; - bfd_size_type amt; - - /* Write the description length and text members. */ - amt = sizeof (nlm_variable_header (abfd)->descriptionLength); - if (bfd_bwrite (& nlm_variable_header (abfd)->descriptionLength, amt, - abfd) != amt) - return FALSE; - amt = nlm_variable_header (abfd)->descriptionLength + 1; - if (bfd_bwrite ((void *) nlm_variable_header (abfd)->descriptionText, amt, - abfd) != amt) - return FALSE; - - /* Convert and write the stackSize field. */ - put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->stackSize, temp); - amt = sizeof (temp); - if (bfd_bwrite (temp, amt, abfd) != amt) - return FALSE; - - /* Convert and write the reserved field. */ - put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->reserved, temp); - amt = sizeof (temp); - if (bfd_bwrite (temp, amt, abfd) != amt) - return FALSE; - - /* Write the oldThreadName field. This field is a fixed length string. */ - amt = sizeof (nlm_variable_header (abfd)->oldThreadName); - if (bfd_bwrite (nlm_variable_header (abfd)->oldThreadName, amt, - abfd) != amt) - return FALSE; - - /* Write the screen name length and text members. */ - amt = sizeof (nlm_variable_header (abfd)->screenNameLength); - if (bfd_bwrite (& nlm_variable_header (abfd)->screenNameLength, amt, - abfd) != amt) - return FALSE; - amt = nlm_variable_header (abfd)->screenNameLength + 1; - if (bfd_bwrite (nlm_variable_header (abfd)->screenName, amt, abfd) != amt) - return FALSE; - - /* Write the thread name length and text members. */ - amt = sizeof (nlm_variable_header (abfd)->threadNameLength); - if (bfd_bwrite (& nlm_variable_header (abfd)->threadNameLength, amt, - abfd) != amt) - return FALSE; - amt = nlm_variable_header (abfd)->threadNameLength + 1; - if (bfd_bwrite (nlm_variable_header (abfd)->threadName, amt, abfd) != amt) - return FALSE; - return TRUE; -} - -/* Return whether there is a non-zero byte in a memory block. */ - -static bfd_boolean -find_nonzero (void * buf, size_t size) -{ - char *p = (char *) buf; - - while (size-- != 0) - if (*p++ != 0) - return TRUE; - return FALSE; -} - -/* Swap out the contents of the auxiliary headers. We create those - auxiliary headers which have been set non-zero. We do not require - the caller to set up the stamp fields. */ - -static bfd_boolean -nlm_swap_auxiliary_headers_out (bfd *abfd) -{ - bfd_size_type amt; - - /* Write out the version header if there is one. */ - if (find_nonzero (nlm_version_header (abfd), - sizeof (Nlm_Internal_Version_Header))) - { - Nlm_External_Version_Header thdr; - - LITMEMCPY (thdr.stamp, "VeRsIoN#"); - put_word (abfd, (bfd_vma) nlm_version_header (abfd)->majorVersion, - (bfd_byte *) thdr.majorVersion); - put_word (abfd, (bfd_vma) nlm_version_header (abfd)->minorVersion, - (bfd_byte *) thdr.minorVersion); - put_word (abfd, (bfd_vma) nlm_version_header (abfd)->revision, - (bfd_byte *) thdr.revision); - put_word (abfd, (bfd_vma) nlm_version_header (abfd)->year, - (bfd_byte *) thdr.year); - put_word (abfd, (bfd_vma) nlm_version_header (abfd)->month, - (bfd_byte *) thdr.month); - put_word (abfd, (bfd_vma) nlm_version_header (abfd)->day, - (bfd_byte *) thdr.day); - if (bfd_bwrite ((void *) &thdr, (bfd_size_type) sizeof (thdr), abfd) - != sizeof (thdr)) - return FALSE; - } - - /* Note - the CoPyRiGhT tag is emitted before the MeSsAgEs - tag in order to make the NW4.x and NW5.x loaders happy. */ - - /* Write out the copyright header if there is one. */ - if (find_nonzero (nlm_copyright_header (abfd), - sizeof (Nlm_Internal_Copyright_Header))) - { - Nlm_External_Copyright_Header thdr; - - LITMEMCPY (thdr.stamp, "CoPyRiGhT="); - amt = sizeof (thdr.stamp); - if (bfd_bwrite ((void *) thdr.stamp, amt, abfd) != amt) - return FALSE; - thdr.copyrightMessageLength[0] = - nlm_copyright_header (abfd)->copyrightMessageLength; - amt = 1; - if (bfd_bwrite ((void *) thdr.copyrightMessageLength, amt, abfd) != amt) - return FALSE; - /* The copyright message is a variable length string. */ - amt = nlm_copyright_header (abfd)->copyrightMessageLength + 1; - if (bfd_bwrite ((void *) nlm_copyright_header (abfd)->copyrightMessage, - amt, abfd) != amt) - return FALSE; - } - - /* Write out the extended header if there is one. */ - if (find_nonzero (nlm_extended_header (abfd), - sizeof (Nlm_Internal_Extended_Header))) - { - Nlm_External_Extended_Header thdr; - - LITMEMCPY (thdr.stamp, "MeSsAgEs"); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->languageID, - (bfd_byte *) thdr.languageID); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->messageFileOffset, - (bfd_byte *) thdr.messageFileOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->messageFileLength, - (bfd_byte *) thdr.messageFileLength); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->messageCount, - (bfd_byte *) thdr.messageCount); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->helpFileOffset, - (bfd_byte *) thdr.helpFileOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->helpFileLength, - (bfd_byte *) thdr.helpFileLength); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->RPCDataOffset, - (bfd_byte *) thdr.RPCDataOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->RPCDataLength, - (bfd_byte *) thdr.RPCDataLength); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedCodeOffset, - (bfd_byte *) thdr.sharedCodeOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedCodeLength, - (bfd_byte *) thdr.sharedCodeLength); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedDataOffset, - (bfd_byte *) thdr.sharedDataOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedDataLength, - (bfd_byte *) thdr.sharedDataLength); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupOffset, - (bfd_byte *) thdr.sharedRelocationFixupOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupCount, - (bfd_byte *) thdr.sharedRelocationFixupCount); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceOffset, - (bfd_byte *) thdr.sharedExternalReferenceOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceCount, - (bfd_byte *) thdr.sharedExternalReferenceCount); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedPublicsOffset, - (bfd_byte *) thdr.sharedPublicsOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedPublicsCount, - (bfd_byte *) thdr.sharedPublicsCount); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordOffset, - (bfd_byte *) thdr.sharedDebugRecordOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordCount, - (bfd_byte *) thdr.sharedDebugRecordCount); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->SharedInitializationOffset, - (bfd_byte *) thdr.sharedInitializationOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->SharedExitProcedureOffset, - (bfd_byte *) thdr.SharedExitProcedureOffset); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->productID, - (bfd_byte *) thdr.productID); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->reserved0, - (bfd_byte *) thdr.reserved0); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->reserved1, - (bfd_byte *) thdr.reserved1); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->reserved2, - (bfd_byte *) thdr.reserved2); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->reserved3, - (bfd_byte *) thdr.reserved3); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->reserved4, - (bfd_byte *) thdr.reserved4); - put_word (abfd, - (bfd_vma) nlm_extended_header (abfd)->reserved5, - (bfd_byte *) thdr.reserved5); - if (bfd_bwrite ((void *) &thdr, (bfd_size_type) sizeof (thdr), abfd) - != sizeof (thdr)) - return FALSE; - } - - /* Write out the custom header if there is one. */ - if (find_nonzero (nlm_custom_header (abfd), - sizeof (Nlm_Internal_Custom_Header))) - { - Nlm_External_Custom_Header thdr; - bfd_boolean ds; - bfd_size_type hdrLength; - - ds = find_nonzero (nlm_custom_header (abfd)->dataStamp, - sizeof (nlm_custom_header (abfd)->dataStamp)); - LITMEMCPY (thdr.stamp, "CuStHeAd"); - hdrLength = (2 * NLM_TARGET_LONG_SIZE + (ds ? 8 : 0) - + nlm_custom_header (abfd)->hdrLength); - put_word (abfd, hdrLength, thdr.length); - put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataOffset, - thdr.dataOffset); - put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataLength, - thdr.dataLength); - if (! ds) - { - BFD_ASSERT (nlm_custom_header (abfd)->hdrLength == 0); - amt = sizeof (thdr) - sizeof (thdr.dataStamp); - if (bfd_bwrite ((void *) &thdr, amt, abfd) != amt) - return FALSE; - } - else - { - memcpy (thdr.dataStamp, nlm_custom_header (abfd)->dataStamp, - sizeof (thdr.dataStamp)); - amt = sizeof (thdr); - if (bfd_bwrite ((void *) &thdr, amt, abfd) != amt) - return FALSE; - amt = nlm_custom_header (abfd)->hdrLength; - if (bfd_bwrite (nlm_custom_header (abfd)->hdr, amt, abfd) != amt) - return FALSE; - } - } - - /* Write out the Cygnus debugging header if there is one. */ - if (find_nonzero (nlm_cygnus_ext_header (abfd), - sizeof (Nlm_Internal_Cygnus_Ext_Header))) - { - Nlm_External_Custom_Header thdr; - - LITMEMCPY (thdr.stamp, "CuStHeAd"); - put_word (abfd, (bfd_vma) 2 * NLM_TARGET_LONG_SIZE + 8, - (bfd_byte *) thdr.length); - put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->offset, - (bfd_byte *) thdr.dataOffset); - put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->length, - (bfd_byte *) thdr.dataLength); - LITMEMCPY (thdr.dataStamp, "CyGnUsEx"); - amt = sizeof (thdr); - if (bfd_bwrite ((void *) &thdr, amt, abfd) != amt) - return FALSE; - } - - return TRUE; -} - -/* We read the NLM's public symbols and use it to generate a bfd symbol - table (hey, it's better than nothing) on a one-for-one basis. Thus - use the number of public symbols as the number of bfd symbols we will - have once we actually get around to reading them in. - - Return the number of bytes required to hold the symtab vector, based on - the count plus 1, since we will NULL terminate the vector allocated based - on this size. */ - -long -nlm_get_symtab_upper_bound (bfd *abfd) -{ - Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form. */ - long symcount; - long symtab_size = 0; - - i_fxdhdrp = nlm_fixed_header (abfd); - symcount = (i_fxdhdrp->numberOfPublics - + i_fxdhdrp->numberOfDebugRecords - + i_fxdhdrp->numberOfExternalReferences); - symtab_size = (symcount + 1) * (sizeof (asymbol)); - return symtab_size; -} - -/* Slurp in nlm symbol table. - - In the external (in-file) form, NLM export records are variable length, - with the following form: - - 1 byte length of the symbol name (N) - N bytes the symbol name - 4 bytes the symbol offset from start of it's section - - We also read in the debugging symbols and import records. Import - records are treated as undefined symbols. As we read the import - records we also read in the associated reloc information, which is - attached to the symbol. - - The bfd symbols are copied to SYMvoid *S. - - When we return, the bfd symcount is either zero or contains the correct - number of symbols. */ - -static bfd_boolean -nlm_slurp_symbol_table (bfd *abfd) -{ - Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form. */ - bfd_size_type totsymcount; /* Number of NLM symbols. */ - bfd_size_type symcount; /* Counter of NLM symbols. */ - nlm_symbol_type *sym; /* Pointer to current bfd symbol. */ - unsigned char symlength; /* Symbol length read into here. */ - unsigned char symtype; /* Type of debugging symbol. */ - bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here. */ - bfd_boolean (*read_import_func) (bfd *, nlm_symbol_type *); - bfd_boolean (*set_public_section_func) (bfd *, nlm_symbol_type *); - bfd_size_type amt; - - if (nlm_get_symbols (abfd) != NULL) - return TRUE; - - /* Read each raw NLM symbol, using the information to create a canonical bfd - symbol table entry. - - Note that we allocate the initial bfd canonical symbol buffer based on a - one-to-one mapping of the NLM symbols to canonical symbols. We actually - use all the NLM symbols, so there will be no space left over at the end. - When we have all the symbols, we build the caller's pointer vector. */ - - abfd->symcount = 0; - i_fxdhdrp = nlm_fixed_header (abfd); - totsymcount = (i_fxdhdrp->numberOfPublics - + i_fxdhdrp->numberOfDebugRecords - + i_fxdhdrp->numberOfExternalReferences); - if (totsymcount == 0) - return TRUE; - - if (bfd_seek (abfd, i_fxdhdrp->publicsOffset, SEEK_SET) != 0) - return FALSE; - - amt = totsymcount * sizeof (nlm_symbol_type); - sym = bfd_zalloc (abfd, amt); - if (!sym) - return FALSE; - nlm_set_symbols (abfd, sym); - - /* We use the bfd's symcount directly as the control count, so that early - termination of the loop leaves the symcount correct for the symbols that - were read. */ - - set_public_section_func = nlm_set_public_section_func (abfd); - symcount = i_fxdhdrp->numberOfPublics; - while (abfd->symcount < symcount) - { - amt = sizeof (symlength); - if (bfd_bread ((void *) &symlength, amt, abfd) != amt) - return FALSE; - amt = symlength; - sym->symbol.the_bfd = abfd; - sym->symbol.name = bfd_alloc (abfd, amt + 1); - if (!sym->symbol.name) - return FALSE; - if (bfd_bread ((void *) sym->symbol.name, amt, abfd) != amt) - return FALSE; - /* Cast away const. */ - ((char *) (sym->symbol.name))[symlength] = '\0'; - amt = sizeof (temp); - if (bfd_bread ((void *) temp, amt, abfd) != amt) - return FALSE; - sym->symbol.flags = BSF_GLOBAL | BSF_EXPORT; - sym->symbol.value = get_word (abfd, temp); - if (set_public_section_func) - { - /* Most backends can use the code below, but unfortunately - some use a different scheme. */ - if (! (*set_public_section_func) (abfd, sym)) - return FALSE; - } - else - { - if (sym->symbol.value & NLM_HIBIT) - { - sym->symbol.value &= ~NLM_HIBIT; - sym->symbol.flags |= BSF_FUNCTION; - sym->symbol.section = - bfd_get_section_by_name (abfd, NLM_CODE_NAME); - } - else - sym->symbol.section = - bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); - } - sym->rcnt = 0; - abfd->symcount++; - sym++; - } - - /* Read the debugging records. */ - - if (i_fxdhdrp->numberOfDebugRecords > 0) - { - if (bfd_seek (abfd, i_fxdhdrp->debugInfoOffset, SEEK_SET) != 0) - return FALSE; - - symcount += i_fxdhdrp->numberOfDebugRecords; - while (abfd->symcount < symcount) - { - amt = sizeof (symtype); - if (bfd_bread ((void *) &symtype, amt, abfd) != amt) - return FALSE; - amt = sizeof (temp); - if (bfd_bread ((void *) temp, amt, abfd) != amt) - return FALSE; - amt = sizeof (symlength); - if (bfd_bread ((void *) &symlength, amt, abfd) != amt) - return FALSE; - amt = symlength; - sym->symbol.the_bfd = abfd; - sym->symbol.name = bfd_alloc (abfd, amt + 1); - if (!sym->symbol.name) - return FALSE; - if (bfd_bread ((void *) sym->symbol.name, amt, abfd) != amt) - return FALSE; - /* Cast away const. */ - ((char *) (sym->symbol.name))[symlength] = '\0'; - sym->symbol.flags = BSF_LOCAL; - sym->symbol.value = get_word (abfd, temp); - - if (symtype == 0) - sym->symbol.section = - bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); - else if (symtype == 1) - { - sym->symbol.flags |= BSF_FUNCTION; - sym->symbol.section = - bfd_get_section_by_name (abfd, NLM_CODE_NAME); - } - else - sym->symbol.section = bfd_abs_section_ptr; - - sym->rcnt = 0; - abfd->symcount++; - sym++; - } - } - - /* Read in the import records. We can only do this if we know how - to read relocs for this target. */ - read_import_func = nlm_read_import_func (abfd); - if (read_import_func != NULL) - { - if (bfd_seek (abfd, i_fxdhdrp->externalReferencesOffset, SEEK_SET) != 0) - return FALSE; - - symcount += i_fxdhdrp->numberOfExternalReferences; - while (abfd->symcount < symcount) - { - if (! (*read_import_func) (abfd, sym)) - return FALSE; - sym++; - abfd->symcount++; - } - } - - return TRUE; -} - -/* Note that bfd_get_symcount is guaranteed to be zero if slurping the - symbol table fails. */ - -long -nlm_canonicalize_symtab (bfd *abfd, asymbol **alocation) -{ - nlm_symbol_type *symbase; - bfd_size_type counter = 0; - - if (! nlm_slurp_symbol_table (abfd)) - return -1; - symbase = nlm_get_symbols (abfd); - while (counter < bfd_get_symcount (abfd)) - { - *alocation++ = &symbase->symbol; - symbase++; - counter++; - } - *alocation = NULL; - return bfd_get_symcount (abfd); -} - -/* Make an NLM symbol. There is nothing special to do here. */ - -asymbol * -nlm_make_empty_symbol (bfd *abfd) -{ - bfd_size_type amt = sizeof (nlm_symbol_type); - nlm_symbol_type *new = bfd_zalloc (abfd, amt); - - if (new == NULL) - return NULL; - new->symbol.the_bfd = abfd; - return & new->symbol; -} - -/* Get symbol information. */ - -void -nlm_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, - asymbol *symbol, - symbol_info *ret) -{ - bfd_symbol_info (symbol, ret); -} - -/* Print symbol information. */ - -void -nlm_print_symbol (bfd *abfd, - void * afile, - asymbol *symbol, - bfd_print_symbol_type how) -{ - FILE *file = (FILE *) afile; - - switch (how) - { - case bfd_print_symbol_name: - case bfd_print_symbol_more: - if (symbol->name) - fprintf (file, "%s", symbol->name); - break; - case bfd_print_symbol_all: - bfd_print_symbol_vandf (abfd, (void *) file, symbol); - fprintf (file, " %-5s", symbol->section->name); - if (symbol->name) - fprintf (file, " %s", symbol->name); - break; - } -} - -/* Get the relocs for an NLM file. There are two types of relocs. - Imports are relocs against symbols defined in other NLM files. We - treat these as relocs against global symbols. Relocation fixups - are internal relocs. - - The actual format used to store the relocs is machine specific. */ - -/* Read in the relocation fixup information. This is stored in - nlm_relocation_fixups, an array of arelent structures, and - nlm_relocation_fixup_secs, an array of section pointers. The - section pointers are needed because the relocs are not sorted by - section. */ - -static bfd_boolean -nlm_slurp_reloc_fixups (bfd *abfd) -{ - bfd_boolean (*read_func) (bfd *, nlm_symbol_type *, asection **, arelent *); - bfd_size_type count, amt; - arelent *rels; - asection **secs; - - if (nlm_relocation_fixups (abfd) != NULL) - return TRUE; - read_func = nlm_read_reloc_func (abfd); - if (read_func == NULL) - return TRUE; - - if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, - SEEK_SET) != 0) - return FALSE; - - count = nlm_fixed_header (abfd)->numberOfRelocationFixups; - amt = count * sizeof (arelent); - rels = bfd_alloc (abfd, amt); - amt = count * sizeof (asection *); - secs = bfd_alloc (abfd, amt); - if ((rels == NULL || secs == NULL) && count != 0) - return FALSE; - nlm_relocation_fixups (abfd) = rels; - nlm_relocation_fixup_secs (abfd) = secs; - - /* We have to read piece by piece, because we don't know how large - the machine specific reloc information is. */ - while (count-- != 0) - { - if (! (*read_func) (abfd, NULL, secs, rels)) - { - nlm_relocation_fixups (abfd) = NULL; - nlm_relocation_fixup_secs (abfd) = NULL; - return FALSE; - } - ++secs; - ++rels; - } - - return TRUE; -} - -/* Get the number of relocs. This really just returns an upper bound, - since it does not attempt to distinguish them based on the section. - That will be handled when they are actually read. */ - -long -nlm_get_reloc_upper_bound (bfd *abfd, asection *sec) -{ - nlm_symbol_type *syms; - bfd_size_type count; - unsigned int ret; - - /* If we don't know how to read relocs, just return 0. */ - if (nlm_read_reloc_func (abfd) == NULL) - return -1; - /* Make sure we have either the code or the data section. */ - if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) - return 0; - - syms = nlm_get_symbols (abfd); - if (syms == NULL) - { - if (! nlm_slurp_symbol_table (abfd)) - return -1; - syms = nlm_get_symbols (abfd); - } - - ret = nlm_fixed_header (abfd)->numberOfRelocationFixups; - - count = bfd_get_symcount (abfd); - while (count-- != 0) - { - ret += syms->rcnt; - ++syms; - } - - return (ret + 1) * sizeof (arelent *); -} - -/* Get the relocs themselves. */ - -long -nlm_canonicalize_reloc (bfd *abfd, - asection *sec, - arelent **relptr, - asymbol **symbols) -{ - arelent *rels; - asection **secs; - bfd_size_type count, i; - long ret; - - /* Get the relocation fixups. */ - rels = nlm_relocation_fixups (abfd); - if (rels == NULL) - { - if (! nlm_slurp_reloc_fixups (abfd)) - return -1; - rels = nlm_relocation_fixups (abfd); - } - secs = nlm_relocation_fixup_secs (abfd); - - ret = 0; - count = nlm_fixed_header (abfd)->numberOfRelocationFixups; - for (i = 0; i < count; i++, rels++, secs++) - { - if (*secs == sec) - { - *relptr++ = rels; - ++ret; - } - } - - /* Get the import symbols. */ - count = bfd_get_symcount (abfd); - for (i = 0; i < count; i++, symbols++) - { - asymbol *sym; - - sym = *symbols; - if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour) - { - nlm_symbol_type *nlm_sym; - bfd_size_type j; - - nlm_sym = (nlm_symbol_type *) sym; - for (j = 0; j < nlm_sym->rcnt; j++) - { - if (nlm_sym->relocs[j].section == sec) - { - *relptr = &nlm_sym->relocs[j].reloc; - (*relptr)->sym_ptr_ptr = symbols; - ++relptr; - ++ret; - } - } - } - } - - *relptr = NULL; - - return ret; -} - -/* Compute the section file positions for an NLM file. All variable - length data in the file headers must be set before this function is - called. If the variable length data is changed later, the - resulting object file will be incorrect. Unfortunately, there is - no way to check this. - - This routine also sets the Size and Offset fields in the fixed - header. - - It also looks over the symbols and moves any common symbols into - the .bss section; NLM has no way to represent a common symbol. - This approach means that either the symbols must already have been - set at this point, or there must be no common symbols. We need to - move the symbols at this point so that mangle_relocs can see the - final values. */ - -static bfd_boolean -nlm_compute_section_file_positions (bfd *abfd) -{ - file_ptr sofar; - asection *sec; - bfd_vma text, data, bss; - bfd_vma text_low, data_low; - unsigned int text_align, data_align, other_align; - file_ptr text_ptr, data_ptr, other_ptr; - asection *bss_sec; - asymbol **sym_ptr_ptr; - - if (abfd->output_has_begun) - return TRUE; - - /* Make sure we have a section to hold uninitialized data. */ - bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); - if (bss_sec == NULL) - { - if (!add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, - (file_ptr) 0, (bfd_size_type) 0, - SEC_ALLOC)) - return FALSE; - bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); - } - - abfd->output_has_begun = TRUE; - - /* The fixed header. */ - sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd); - - /* The variable header. */ - sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength) - + nlm_variable_header (abfd)->descriptionLength + 1 - + NLM_TARGET_LONG_SIZE /* stackSize */ - + NLM_TARGET_LONG_SIZE /* reserved */ - + sizeof (nlm_variable_header (abfd)->oldThreadName) - + sizeof (nlm_variable_header (abfd)->screenNameLength) - + nlm_variable_header (abfd)->screenNameLength + 1 - + sizeof (nlm_variable_header (abfd)->threadNameLength) - + nlm_variable_header (abfd)->threadNameLength + 1); - - /* The auxiliary headers. */ - if (find_nonzero (nlm_version_header (abfd), - sizeof (Nlm_Internal_Version_Header))) - sofar += sizeof (Nlm_External_Version_Header); - if (find_nonzero (nlm_extended_header (abfd), - sizeof (Nlm_Internal_Extended_Header))) - sofar += sizeof (Nlm_External_Extended_Header); - if (find_nonzero (nlm_copyright_header (abfd), - sizeof (Nlm_Internal_Copyright_Header))) - sofar += (sizeof (Nlm_External_Copyright_Header) - + nlm_copyright_header (abfd)->copyrightMessageLength + 1); - if (find_nonzero (nlm_custom_header (abfd), - sizeof (Nlm_Internal_Custom_Header))) - sofar += (sizeof (Nlm_External_Custom_Header) - + nlm_custom_header (abfd)->hdrLength); - if (find_nonzero (nlm_cygnus_ext_header (abfd), - sizeof (Nlm_Internal_Cygnus_Ext_Header))) - sofar += sizeof (Nlm_External_Custom_Header); - - /* Compute the section file positions in two passes. First get the - sizes of the text and data sections, and then set the file - positions. This code aligns the sections in the file using the - same alignment restrictions that apply to the sections in memory; - this may not be necessary. */ - text = 0; - text_low = (bfd_vma) - 1; - text_align = 0; - data = 0; - data_low = (bfd_vma) - 1; - data_align = 0; - bss = 0; - other_align = 0; - for (sec = abfd->sections; sec != NULL; sec = sec->next) - { - flagword f; - - sec->size = BFD_ALIGN (sec->size, 1 << sec->alignment_power); - - f = bfd_get_section_flags (abfd, sec); - if (f & SEC_CODE) - { - text += sec->size; - if (bfd_get_section_vma (abfd, sec) < text_low) - text_low = bfd_get_section_vma (abfd, sec); - if (sec->alignment_power > text_align) - text_align = sec->alignment_power; - } - else if (f & SEC_DATA) - { - data += sec->size; - if (bfd_get_section_vma (abfd, sec) < data_low) - data_low = bfd_get_section_vma (abfd, sec); - if (sec->alignment_power > data_align) - data_align = sec->alignment_power; - } - else if (f & SEC_HAS_CONTENTS) - { - if (sec->alignment_power > other_align) - other_align = sec->alignment_power; - } - else if (f & SEC_ALLOC) - bss += sec->size; - } - - nlm_set_text_low (abfd, text_low); - nlm_set_data_low (abfd, data_low); - - if (nlm_no_uninitialized_data (abfd)) - { - /* This NetWare format does not use uninitialized data. We must - increase the size of the data section. We will never wind up - writing those file locations, so they will remain zero. */ - data += bss; - bss = 0; - } - - text_ptr = BFD_ALIGN (sofar, 1 << text_align); - data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align); - other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align); - - /* Fill in some fields in the header for which we now have the - information. */ - nlm_fixed_header (abfd)->codeImageOffset = text_ptr; - nlm_fixed_header (abfd)->codeImageSize = text; - nlm_fixed_header (abfd)->dataImageOffset = data_ptr; - nlm_fixed_header (abfd)->dataImageSize = data; - nlm_fixed_header (abfd)->uninitializedDataSize = bss; - - for (sec = abfd->sections; sec != NULL; sec = sec->next) - { - flagword f; - - f = bfd_get_section_flags (abfd, sec); - - if (f & SEC_CODE) - { - sec->filepos = text_ptr; - text_ptr += sec->size; - } - else if (f & SEC_DATA) - { - sec->filepos = data_ptr; - data_ptr += sec->size; - } - else if (f & SEC_HAS_CONTENTS) - { - sec->filepos = other_ptr; - other_ptr += sec->size; - } - } - - nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr; - - /* Move all common symbols into the .bss section. */ - - sym_ptr_ptr = bfd_get_outsymbols (abfd); - if (sym_ptr_ptr != NULL) - { - asymbol **sym_end; - bfd_vma add; - - sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); - add = 0; - for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) - { - asymbol *sym; - bfd_vma size; - - sym = *sym_ptr_ptr; - - if (!bfd_is_com_section (bfd_get_section (sym))) - continue; - - /* Put the common symbol in the .bss section, and increase - the size of the .bss section by the size of the common - symbol (which is the old value of the symbol). */ - sym->section = bss_sec; - size = sym->value; - sym->value = bss_sec->size + add; - add += size; - add = BFD_ALIGN (add, 1 << bss_sec->alignment_power); - } - if (add != 0) - { - if (nlm_no_uninitialized_data (abfd)) - { - /* We could handle this case, but so far it hasn't been - necessary. */ - abort (); - } - nlm_fixed_header (abfd)->uninitializedDataSize += add; - bss_sec->size += add; - } - } - - return TRUE; -} - -/* Set the contents of a section. To do this we need to know where - the section is going to be located in the output file. That means - that the sizes of all the sections must be set, and all the - variable size header information must be known. */ - -bfd_boolean -nlm_set_section_contents (bfd *abfd, - asection *section, - const void * location, - file_ptr offset, - bfd_size_type count) -{ - if (! abfd->output_has_begun - && ! nlm_compute_section_file_positions (abfd)) - return FALSE; - - if (count == 0) - return TRUE; - - /* i386 NetWare has a very restricted set of relocs. In order for - objcopy to work, the NLM i386 backend needs a chance to rework - the section contents so that its set of relocs will work. If all - the relocs are already acceptable, this will not do anything. */ - if (section->reloc_count != 0) - { - bfd_boolean (*mangle_relocs_func) - (bfd *, asection *, const void *, bfd_vma, bfd_size_type); - - mangle_relocs_func = nlm_mangle_relocs_func (abfd); - if (mangle_relocs_func != NULL) - { - if (!(*mangle_relocs_func) (abfd, section, location, - (bfd_vma) offset, count)) - return FALSE; - } - } - - if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 - || bfd_bwrite (location, count, abfd) != count) - return FALSE; - - return TRUE; -} - -/* We need to sort a list of relocs associated with sections when we - write out the external relocs. */ - -static int -nlm_external_reloc_compare (const void *p1, const void *p2) -{ - const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1; - const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2; - int cmp; - - cmp = strcmp ((*r1->rel->sym_ptr_ptr)->name, - (*r2->rel->sym_ptr_ptr)->name); - if (cmp != 0) - return cmp; - - /* We sort by address within symbol to make the sort more stable and - increase the chances that different hosts will generate bit for - bit equivalent results. */ - return (int) (r1->rel->address - r2->rel->address); -} - -/* Write out an NLM file. We write out the information in this order: - fixed header - variable header - auxiliary headers - code sections - data sections - other sections (custom data, messages, help, shared NLM, RPC, - module dependencies) - relocation fixups - external references (imports) - public symbols (exports) - debugging records - This is similar to the order used by the NetWare tools; the - difference is that NetWare puts the sections other than code, data - and custom data at the end of the NLM. It is convenient for us to - know where the sections are going to be before worrying about the - size of the other information. - - By the time this function is called, all the section data should - have been output using set_section_contents. Note that custom - data, the message file, the help file, the shared NLM file, the RPC - data, and the module dependencies are all considered to be - sections; the caller is responsible for filling in the offset and - length fields in the NLM headers. The relocation fixups and - imports are both obtained from the list of relocs attached to each - section. The exports and debugging records are obtained from the - list of outsymbols. */ - -bfd_boolean -nlm_write_object_contents (bfd *abfd) -{ - asection *sec; - bfd_boolean (*write_import_func) (bfd *, asection *, arelent *); - bfd_size_type external_reloc_count, internal_reloc_count, i, c; - struct reloc_and_sec *external_relocs; - asymbol **sym_ptr_ptr; - file_ptr last; - bfd_boolean (*write_prefix_func) (bfd *); - unsigned char *fixed_header = NULL; - file_ptr pos; - bfd_size_type amt; - - fixed_header = bfd_malloc (nlm_fixed_header_size (abfd)); - if (fixed_header == NULL) - goto error_return; - - if (! abfd->output_has_begun - && ! nlm_compute_section_file_positions (abfd)) - goto error_return; - - /* Write out the variable length headers. */ - pos = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd); - if (bfd_seek (abfd, pos, SEEK_SET) != 0) - goto error_return; - if (! nlm_swap_variable_header_out (abfd) - || ! nlm_swap_auxiliary_headers_out (abfd)) - { - bfd_set_error (bfd_error_system_call); - goto error_return; - } - - /* A weak check on whether the section file positions were - reasonable. */ - if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset) - { - bfd_set_error (bfd_error_invalid_operation); - goto error_return; - } - - /* Advance to the relocs. */ - if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, - SEEK_SET) != 0) - goto error_return; - - /* The format of the relocation entries is dependent upon the - particular target. We use an external routine to write the reloc - out. */ - write_import_func = nlm_write_import_func (abfd); - - /* Write out the internal relocation fixups. While we're looping - over the relocs, we also count the external relocs, which is - needed when they are written out below. */ - internal_reloc_count = 0; - external_reloc_count = 0; - for (sec = abfd->sections; sec != NULL; sec = sec->next) - { - arelent **rel_ptr_ptr, **rel_end; - - if (sec->reloc_count == 0) - continue; - - /* We can only represent relocs within a code or data - section. We ignore them for a debugging section. */ - if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) - continue; - - /* We need to know how to write out imports */ - if (write_import_func == NULL) - { - bfd_set_error (bfd_error_invalid_operation); - goto error_return; - } - - rel_ptr_ptr = sec->orelocation; - rel_end = rel_ptr_ptr + sec->reloc_count; - for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) - { - arelent *rel; - asymbol *sym; - - rel = *rel_ptr_ptr; - sym = *rel->sym_ptr_ptr; - - if (! bfd_is_und_section (bfd_get_section (sym))) - { - ++internal_reloc_count; - if (! (*write_import_func) (abfd, sec, rel)) - goto error_return; - } - else - ++external_reloc_count; - } - } - nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count; - - /* Write out the imports (relocs against external symbols). These - are output as a symbol name followed by all the relocs for that - symbol, so we must first gather together all the relocs against - external symbols and sort them. */ - amt = external_reloc_count * sizeof (struct reloc_and_sec); - external_relocs = bfd_alloc (abfd, amt); - if (external_relocs == NULL) - goto error_return; - i = 0; - for (sec = abfd->sections; sec != NULL; sec = sec->next) - { - arelent **rel_ptr_ptr, **rel_end; - - if (sec->reloc_count == 0) - continue; - - rel_ptr_ptr = sec->orelocation; - rel_end = rel_ptr_ptr + sec->reloc_count; - for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) - { - arelent *rel; - asymbol *sym; - - rel = *rel_ptr_ptr; - sym = *rel->sym_ptr_ptr; - - if (! bfd_is_und_section (bfd_get_section (sym))) - continue; - - external_relocs[i].rel = rel; - external_relocs[i].sec = sec; - ++i; - } - } - - BFD_ASSERT (i == external_reloc_count); - - /* Sort the external relocs by name. */ - qsort (external_relocs, (size_t) external_reloc_count, - sizeof (struct reloc_and_sec), nlm_external_reloc_compare); - - /* Write out the external relocs. */ - nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd); - c = 0; - i = 0; - while (i < external_reloc_count) - { - arelent *rel; - asymbol *sym; - bfd_size_type j, cnt; - - ++c; - - rel = external_relocs[i].rel; - sym = *rel->sym_ptr_ptr; - - cnt = 0; - for (j = i; - (j < external_reloc_count - && *external_relocs[j].rel->sym_ptr_ptr == sym); - j++) - ++cnt; - - if (! (*nlm_write_external_func (abfd)) (abfd, cnt, sym, - &external_relocs[i])) - goto error_return; - - i += cnt; - } - - nlm_fixed_header (abfd)->numberOfExternalReferences = c; - - /* Write out the public symbols (exports). */ - sym_ptr_ptr = bfd_get_outsymbols (abfd); - if (sym_ptr_ptr != NULL) - { - bfd_vma (*get_public_offset_func) (bfd *, asymbol *); - bfd_boolean (*write_export_func) (bfd *, asymbol *, bfd_vma); - - asymbol **sym_end; - - nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd); - get_public_offset_func = nlm_get_public_offset_func (abfd); - write_export_func = nlm_write_export_func (abfd); - c = 0; - sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); - for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) - { - asymbol *sym; - bfd_byte len; - bfd_vma offset; - bfd_byte temp[NLM_TARGET_LONG_SIZE]; - - sym = *sym_ptr_ptr; - - if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0 - || bfd_is_und_section (bfd_get_section (sym))) - continue; - - ++c; - - if (get_public_offset_func) - { - /* Most backends can use the code below, but - unfortunately some use a different scheme. */ - offset = (*get_public_offset_func) (abfd, sym); - } - else - { - offset = bfd_asymbol_value (sym); - sec = sym->section; - if (sec->flags & SEC_CODE) - { - offset -= nlm_get_text_low (abfd); - offset |= NLM_HIBIT; - } - else if (sec->flags & (SEC_DATA | SEC_ALLOC)) - { - /* SEC_ALLOC is for the .bss section. */ - offset -= nlm_get_data_low (abfd); - } - else - { - /* We can't handle an exported symbol that is not in - the code or data segment. */ - bfd_set_error (bfd_error_invalid_operation); - goto error_return; - } - } - - if (write_export_func) - { - if (! (*write_export_func) (abfd, sym, offset)) - goto error_return; - } - else - { - len = strlen (sym->name); - if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd) - != sizeof (bfd_byte)) - || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len) - goto error_return; - - put_word (abfd, offset, temp); - if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) - != sizeof (temp)) - goto error_return; - } - } - nlm_fixed_header (abfd)->numberOfPublics = c; - - /* Write out the debugging records. The NLM conversion program - wants to be able to inhibit this, so as a special hack if - debugInfoOffset is set to -1 we don't write any debugging - information. This can not be handled by fiddling with the - symbol table, because exported symbols appear in both the - exported symbol list and the debugging information. */ - if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) - 1) - { - nlm_fixed_header (abfd)->debugInfoOffset = 0; - nlm_fixed_header (abfd)->numberOfDebugRecords = 0; - } - else - { - nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd); - c = 0; - sym_ptr_ptr = bfd_get_outsymbols (abfd); - sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); - for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) - { - asymbol *sym; - bfd_byte type, len; - bfd_vma offset; - bfd_byte temp[NLM_TARGET_LONG_SIZE]; - - sym = *sym_ptr_ptr; - - /* The NLM notion of a debugging symbol is actually what - BFD calls a local or global symbol. What BFD calls a - debugging symbol NLM does not understand at all. */ - if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0 - || (sym->flags & BSF_DEBUGGING) != 0 - || bfd_is_und_section (bfd_get_section (sym))) - continue; - - ++c; - - offset = bfd_asymbol_value (sym); - sec = sym->section; - if (sec->flags & SEC_CODE) - { - offset -= nlm_get_text_low (abfd); - type = 1; - } - else if (sec->flags & (SEC_DATA | SEC_ALLOC)) - { - /* SEC_ALLOC is for the .bss section. */ - offset -= nlm_get_data_low (abfd); - type = 0; - } - else - type = 2; - - /* The type is 0 for data, 1 for code, 2 for absolute. */ - if (bfd_bwrite (&type, (bfd_size_type) sizeof (bfd_byte), abfd) - != sizeof (bfd_byte)) - goto error_return; - - put_word (abfd, offset, temp); - if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) - != sizeof (temp)) - goto error_return; - - len = strlen (sym->name); - if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd) - != sizeof (bfd_byte)) - || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len) - goto error_return; - } - nlm_fixed_header (abfd)->numberOfDebugRecords = c; - } - } - - /* NLMLINK fills in offset values even if there is no data, so we do - the same. */ - last = bfd_tell (abfd); - if (nlm_fixed_header (abfd)->codeImageOffset == 0) - nlm_fixed_header (abfd)->codeImageOffset = last; - if (nlm_fixed_header (abfd)->dataImageOffset == 0) - nlm_fixed_header (abfd)->dataImageOffset = last; - if (nlm_fixed_header (abfd)->customDataOffset == 0) - nlm_fixed_header (abfd)->customDataOffset = last; - if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0) - nlm_fixed_header (abfd)->moduleDependencyOffset = last; - if (nlm_fixed_header (abfd)->relocationFixupOffset == 0) - nlm_fixed_header (abfd)->relocationFixupOffset = last; - if (nlm_fixed_header (abfd)->externalReferencesOffset == 0) - nlm_fixed_header (abfd)->externalReferencesOffset = last; - if (nlm_fixed_header (abfd)->publicsOffset == 0) - nlm_fixed_header (abfd)->publicsOffset = last; - if (nlm_fixed_header (abfd)->debugInfoOffset == 0) - nlm_fixed_header (abfd)->debugInfoOffset = last; - - /* At this point everything has been written out except the fixed - header. */ - memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd), - NLM_SIGNATURE_SIZE); - nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION; - nlm_fixed_header (abfd)->codeStartOffset = - (bfd_get_start_address (abfd) - - nlm_get_text_low (abfd)); - - /* We have no convenient way for the caller to pass in the exit - procedure or the check unload procedure, so the caller must set - the values in the header to the values of the symbols. */ - nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd); - if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0) - nlm_fixed_header (abfd)->checkUnloadProcedureOffset -= - nlm_get_text_low (abfd); - - if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) - goto error_return; - - write_prefix_func = nlm_write_prefix_func (abfd); - if (write_prefix_func) - { - if (! (*write_prefix_func) (abfd)) - goto error_return; - } - - BFD_ASSERT ((bfd_size_type) bfd_tell (abfd) - == nlm_optional_prefix_size (abfd)); - - nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header); - if (bfd_bwrite (fixed_header, nlm_fixed_header_size (abfd), abfd) - != nlm_fixed_header_size (abfd)) - goto error_return; - - if (fixed_header != NULL) - free (fixed_header); - return TRUE; - -error_return: - if (fixed_header != NULL) - free (fixed_header); - return FALSE; -} |