diff options
Diffstat (limited to 'bfd/nlmcode.h')
| -rw-r--r-- | bfd/nlmcode.h | 2055 |
1 files changed, 0 insertions, 2055 deletions
diff --git a/bfd/nlmcode.h b/bfd/nlmcode.h deleted file mode 100644 index 04ba2a02817..00000000000 --- a/bfd/nlmcode.h +++ /dev/null @@ -1,2055 +0,0 @@ -/* NLM (NetWare Loadable Module) executable support for BFD. - Copyright 1993, 1994, 1995, 1998, 2000 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 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. */ - -#include "bfd.h" -#include "sysdep.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_get_symtab nlmNAME(get_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) - -/* Forward declarations of static functions */ - -static boolean add_bfd_section - PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword)); -static boolean nlm_swap_variable_header_in - PARAMS ((bfd *)); -static boolean nlm_swap_variable_header_out - PARAMS ((bfd *)); -static boolean find_nonzero - PARAMS ((PTR, size_t)); -static boolean nlm_swap_auxiliary_headers_in - PARAMS ((bfd *)); -static boolean nlm_swap_auxiliary_headers_out - PARAMS ((bfd *)); -static boolean nlm_slurp_symbol_table - PARAMS ((bfd *)); -static boolean nlm_slurp_reloc_fixups - PARAMS ((bfd *)); -static boolean nlm_compute_section_file_positions - PARAMS ((bfd *)); -static int nlm_external_reloc_compare - PARAMS ((const void *, const void *)); - -/* 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 bfd_h_put_64 -#define get_word bfd_h_get_64 -#endif -#if ARCH_SIZE == 32 -#define put_word bfd_h_put_32 -#define get_word bfd_h_get_32 -#endif - -const bfd_target * -nlm_object_p (abfd) - bfd *abfd; -{ - struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd); - boolean (*backend_object_p) PARAMS ((bfd *)); - PTR x_fxdhdr = NULL; - Nlm_Internal_Fixed_Header *i_fxdhdrp; - struct nlm_obj_tdata *new_tdata = NULL; - const char *signature; - enum bfd_architecture arch; - - /* 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. */ - - x_fxdhdr = (PTR) bfd_malloc ((size_t) nlm_fixed_header_size (abfd)); - if (x_fxdhdr == NULL) - goto got_no_match; - - if (bfd_read ((PTR) x_fxdhdr, nlm_fixed_header_size (abfd), 1, abfd) != - nlm_fixed_header_size (abfd)) - { - 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. */ - - new_tdata = ((struct nlm_obj_tdata *) - bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata))); - 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 endianess 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); -} - -/* Add a section to the bfd. */ - -static boolean -add_bfd_section (abfd, name, offset, size, flags) - bfd *abfd; - char *name; - file_ptr offset; - bfd_size_type size; - flagword flags; -{ - asection *newsect; - - newsect = bfd_make_section (abfd, name); - if (newsect == NULL) - { - return (false); - } - newsect->vma = 0; /* NLM's are relocatable. */ - newsect->_raw_size = size; - newsect->filepos = offset; - newsect->flags = flags; - newsect->alignment_power = bfd_log2 (0); /* FIXME */ - return (true); -} - -/* 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 boolean -nlm_swap_variable_header_in (abfd) - bfd *abfd; -{ - unsigned char temp[NLM_TARGET_LONG_SIZE]; - - /* Read the description length and text members. */ - - if (bfd_read ((PTR) & nlm_variable_header (abfd)->descriptionLength, - sizeof (nlm_variable_header (abfd)->descriptionLength), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->descriptionLength)) - return (false); - if (bfd_read ((PTR) nlm_variable_header (abfd)->descriptionText, - nlm_variable_header (abfd)->descriptionLength + 1, - 1, abfd) != - (bfd_size_type) nlm_variable_header (abfd)->descriptionLength + 1) - return (false); - - /* Read and convert the stackSize field. */ - - if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return (false); - nlm_variable_header (abfd)->stackSize = get_word (abfd, (bfd_byte *) temp); - - /* Read and convert the reserved field. */ - - if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return (false); - nlm_variable_header (abfd)->reserved = get_word (abfd, (bfd_byte *) temp); - - /* Read the oldThreadName field. This field is a fixed length string. */ - - if (bfd_read ((PTR) nlm_variable_header (abfd)->oldThreadName, - sizeof (nlm_variable_header (abfd)->oldThreadName), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->oldThreadName)) - return (false); - - /* Read the screen name length and text members. */ - - if (bfd_read ((PTR) & nlm_variable_header (abfd)->screenNameLength, - sizeof (nlm_variable_header (abfd)->screenNameLength), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->screenNameLength)) - return (false); - if (bfd_read ((PTR) nlm_variable_header (abfd)->screenName, - nlm_variable_header (abfd)->screenNameLength + 1, - 1, abfd) != - (bfd_size_type) nlm_variable_header (abfd)->screenNameLength + 1) - return (false); - - /* Read the thread name length and text members. */ - - if (bfd_read ((PTR) & nlm_variable_header (abfd)->threadNameLength, - sizeof (nlm_variable_header (abfd)->threadNameLength), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->threadNameLength)) - return (false); - if (bfd_read ((PTR) nlm_variable_header (abfd)->threadName, - nlm_variable_header (abfd)->threadNameLength + 1, - 1, abfd) != - (bfd_size_type) nlm_variable_header (abfd)->threadNameLength + 1) - return (false); - return (true); -} - -/* Swap and write out the variable length header. All the fields must - exist in the NLM, and must exist in this order. */ - -static boolean -nlm_swap_variable_header_out (abfd) - bfd *abfd; -{ - unsigned char temp[NLM_TARGET_LONG_SIZE]; - - /* Write the description length and text members. */ - - if (bfd_write ((PTR) & nlm_variable_header (abfd)->descriptionLength, - sizeof (nlm_variable_header (abfd)->descriptionLength), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->descriptionLength)) - return (false); - if (bfd_write ((PTR) nlm_variable_header (abfd)->descriptionText, - nlm_variable_header (abfd)->descriptionLength + 1, - 1, abfd) != - (bfd_size_type) nlm_variable_header (abfd)->descriptionLength + 1) - return (false); - - /* Convert and write the stackSize field. */ - - put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->stackSize, - (bfd_byte *) temp); - if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return (false); - - /* Convert and write the reserved field. */ - - put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->reserved, - (bfd_byte *) temp); - if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return (false); - - /* Write the oldThreadName field. This field is a fixed length string. */ - - if (bfd_write ((PTR) nlm_variable_header (abfd)->oldThreadName, - sizeof (nlm_variable_header (abfd)->oldThreadName), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->oldThreadName)) - return (false); - - /* Write the screen name length and text members. */ - - if (bfd_write ((PTR) & nlm_variable_header (abfd)->screenNameLength, - sizeof (nlm_variable_header (abfd)->screenNameLength), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->screenNameLength)) - return (false); - if (bfd_write ((PTR) nlm_variable_header (abfd)->screenName, - nlm_variable_header (abfd)->screenNameLength + 1, - 1, abfd) != - (bfd_size_type) nlm_variable_header (abfd)->screenNameLength + 1) - return (false); - - /* Write the thread name length and text members. */ - - if (bfd_write ((PTR) & nlm_variable_header (abfd)->threadNameLength, - sizeof (nlm_variable_header (abfd)->threadNameLength), - 1, abfd) != - sizeof (nlm_variable_header (abfd)->threadNameLength)) - return (false); - if (bfd_write ((PTR) nlm_variable_header (abfd)->threadName, - nlm_variable_header (abfd)->threadNameLength + 1, - 1, abfd) != - (bfd_size_type) nlm_variable_header (abfd)->threadNameLength + 1) - return (false); - 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 boolean -nlm_swap_auxiliary_headers_in (abfd) - bfd *abfd; -{ - char tempstr[16]; - long position; - - for (;;) - { - position = bfd_tell (abfd); - if (bfd_read ((PTR) tempstr, sizeof (tempstr), 1, abfd) != - sizeof (tempstr)) - return (false); - if (bfd_seek (abfd, position, SEEK_SET) == -1) - return (false); - if (strncmp (tempstr, "VeRsIoN#", 8) == 0) - { - Nlm_External_Version_Header thdr; - if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) - 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 (strncmp (tempstr, "MeSsAgEs", 8) == 0) - { - Nlm_External_Extended_Header thdr; - if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) - 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 (strncmp (tempstr, "CoPyRiGhT=", 10) == 0) - { - if (bfd_read ((PTR) nlm_copyright_header (abfd)->stamp, - sizeof (nlm_copyright_header (abfd)->stamp), - 1, abfd) - != sizeof (nlm_copyright_header (abfd)->stamp)) - return (false); - if (bfd_read ((PTR) & (nlm_copyright_header (abfd) - ->copyrightMessageLength), - 1, 1, abfd) != 1) - return (false); - /* The copyright message is a variable length string. */ - if (bfd_read ((PTR) nlm_copyright_header (abfd)->copyrightMessage, - nlm_copyright_header (abfd)->copyrightMessageLength + 1, - 1, abfd) != - ((bfd_size_type) - nlm_copyright_header (abfd)->copyrightMessageLength + 1)) - return (false); - } - else if (strncmp (tempstr, "CuStHeAd", 8) == 0) - { - Nlm_External_Custom_Header thdr; - bfd_size_type hdrLength; - file_ptr dataOffset; - bfd_size_type dataLength; - char dataStamp[8]; - PTR hdr; - - /* Read the stamp ("CuStHeAd"). */ - if (bfd_read ((PTR) thdr.stamp, 1, sizeof (thdr.stamp), abfd) - != sizeof (thdr.stamp)) - return false; - /* Read the length of this custom header. */ - if (bfd_read ((PTR) thdr.length, 1, sizeof (thdr.length), abfd) - != sizeof (thdr.length)) - 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 - { - if (bfd_read ((PTR) thdr.dataOffset, 1, - sizeof (thdr.dataOffset), abfd) - != sizeof (thdr.dataOffset)) - return false; - dataOffset = get_word (abfd, (bfd_byte *) thdr.dataOffset); - } - if (hdrLength < 2 * NLM_TARGET_LONG_SIZE) - dataLength = 0; - else - { - if (bfd_read ((PTR) thdr.dataLength, 1, - sizeof (thdr.dataLength), abfd) - != sizeof (thdr.dataLength)) - return false; - dataLength = get_word (abfd, (bfd_byte *) thdr.dataLength); - } - if (hdrLength < 2 * NLM_TARGET_LONG_SIZE + 8) - memset (dataStamp, 0, sizeof (dataStamp)); - else - { - if (bfd_read ((PTR) dataStamp, 1, sizeof (dataStamp), abfd) - != sizeof (dataStamp)) - 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_read (hdr, 1, 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 (strncmp (dataStamp, "CyGnUsEx", 8) == 0) - { - file_ptr pos; - bfd_byte *contents; - bfd_byte *p, *pend; - - BFD_ASSERT (hdrLength == 0 && hdr == NULL); - - pos = bfd_tell (abfd); - if (bfd_seek (abfd, dataOffset, SEEK_SET) != 0) - return false; - contents = (bfd_byte *) bfd_alloc (abfd, dataLength); - if (contents == NULL) - return false; - if (bfd_read (contents, 1, dataLength, abfd) != dataLength) - return false; - if (bfd_seek (abfd, pos, SEEK_SET) != 0) - return false; - - memcpy (nlm_cygnus_ext_header (abfd), "CyGnUsEx", 8); - 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) &~ 3; - p += l; - filepos = bfd_h_get_32 (abfd, p); - p += 4; - size = bfd_h_get_32 (abfd, p); - p += 4; - - newsec = bfd_make_section_anyway (abfd, name); - if (newsec == (asection *) NULL) - return false; - newsec->_raw_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); -} - -/* Return whether there is a non-zero byte in a memory block. */ - -static boolean -find_nonzero (buf, size) - PTR 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 boolean -nlm_swap_auxiliary_headers_out (abfd) - bfd *abfd; -{ - /* Write out the version header if there is one. */ - if (find_nonzero ((PTR) nlm_version_header (abfd), - sizeof (Nlm_Internal_Version_Header))) - { - Nlm_External_Version_Header thdr; - - memcpy (thdr.stamp, "VeRsIoN#", 8); - 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_write ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) - return false; - } - - /* Write out the extended header if there is one. */ - if (find_nonzero ((PTR) nlm_extended_header (abfd), - sizeof (Nlm_Internal_Extended_Header))) - { - Nlm_External_Extended_Header thdr; - - memcpy (thdr.stamp, "MeSsAgEs", 8); - 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_write ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) - return false; - } - - /* Write out the copyright header if there is one. */ - if (find_nonzero ((PTR) nlm_copyright_header (abfd), - sizeof (Nlm_Internal_Copyright_Header))) - { - Nlm_External_Copyright_Header thdr; - - memcpy (thdr.stamp, "CoPyRiGhT=", 10); - if (bfd_write ((PTR) thdr.stamp, sizeof (thdr.stamp), 1, abfd) - != sizeof (thdr.stamp)) - return false; - thdr.copyrightMessageLength[0] = - nlm_copyright_header (abfd)->copyrightMessageLength; - if (bfd_write ((PTR) thdr.copyrightMessageLength, 1, 1, abfd) != 1) - return false; - /* The copyright message is a variable length string. */ - if (bfd_write ((PTR) nlm_copyright_header (abfd)->copyrightMessage, - nlm_copyright_header (abfd)->copyrightMessageLength + 1, - 1, abfd) != - ((bfd_size_type) - nlm_copyright_header (abfd)->copyrightMessageLength + 1)) - return false; - } - - /* Write out the custom header if there is one. */ - if (find_nonzero ((PTR) nlm_custom_header (abfd), - sizeof (Nlm_Internal_Custom_Header))) - { - Nlm_External_Custom_Header thdr; - boolean ds; - bfd_size_type hdrLength; - - ds = find_nonzero ((PTR) nlm_custom_header (abfd)->dataStamp, - sizeof (nlm_custom_header (abfd)->dataStamp)); - memcpy (thdr.stamp, "CuStHeAd", 8); - 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); - if (bfd_write ((PTR) &thdr, 1, - sizeof (thdr) - sizeof (thdr.dataStamp), abfd) - != sizeof (thdr) - sizeof (thdr.dataStamp)) - return false; - } - else - { - memcpy (thdr.dataStamp, nlm_custom_header (abfd)->dataStamp, - sizeof (thdr.dataStamp)); - if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) - return false; - if (bfd_write (nlm_custom_header (abfd)->hdr, 1, - nlm_custom_header (abfd)->hdrLength, abfd) - != nlm_custom_header (abfd)->hdrLength) - return false; - } - } - - /* Write out the Cygnus debugging header if there is one. */ - if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd), - sizeof (Nlm_Internal_Cygnus_Ext_Header))) - { - Nlm_External_Custom_Header thdr; - - memcpy (thdr.stamp, "CuStHeAd", 8); - 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); - memcpy (thdr.dataStamp, "CyGnUsEx", 8); - if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) - 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 (abfd) - 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); -} - -/* Note that bfd_get_symcount is guaranteed to be zero if slurping the - symbol table fails. */ - -long -nlm_get_symtab (abfd, alocation) - bfd *abfd; - asymbol **alocation; -{ - nlm_symbol_type *symbase; - bfd_size_type counter = 0; - - if (nlm_slurp_symbol_table (abfd) == false) - return -1; - symbase = nlm_get_symbols (abfd); - while (counter < bfd_get_symcount (abfd)) - { - *alocation++ = &symbase->symbol; - symbase++; - counter++; - } - *alocation = (asymbol *) NULL; - return bfd_get_symcount (abfd); -} - -/* Make an NLM symbol. There is nothing special to do here. */ - -asymbol * -nlm_make_empty_symbol (abfd) - bfd *abfd; -{ - nlm_symbol_type *new; - - new = (nlm_symbol_type *) bfd_zalloc (abfd, sizeof (nlm_symbol_type)); - if (new) - new->symbol.the_bfd = abfd; - return &new->symbol; -} - -/* Get symbol information. */ - -void -nlm_get_symbol_info (ignore_abfd, symbol, ret) - bfd *ignore_abfd ATTRIBUTE_UNUSED; - asymbol *symbol; - symbol_info *ret; -{ - bfd_symbol_info (symbol, ret); -} - -/* Print symbol information. */ - -void -nlm_print_symbol (abfd, afile, symbol, how) - bfd *abfd ATTRIBUTE_UNUSED; - PTR 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 ((PTR) file, symbol); - fprintf (file, " %-5s", symbol->section->name); - if (symbol->name) - fprintf (file, " %s", symbol->name); - break; - } -} - -/* 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 SYMPTRS. - - When we return, the bfd symcount is either zero or contains the correct - number of symbols. -*/ - -static boolean -nlm_slurp_symbol_table (abfd) - 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 */ - boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *)); - boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *)); - - 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) == -1) - return (false); - - sym = ((nlm_symbol_type *) - bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type))); - 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) - { - if (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd) - != sizeof (symlength)) - return (false); - sym->symbol.the_bfd = abfd; - sym->symbol.name = bfd_alloc (abfd, symlength + 1); - if (!sym->symbol.name) - return false; - if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd) - != symlength) - return (false); - /* Cast away const. */ - ((char *) (sym->symbol.name))[symlength] = '\0'; - if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) - 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) == false) - 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) == -1) - return (false); - - symcount += i_fxdhdrp->numberOfDebugRecords; - while (abfd->symcount < symcount) - { - if ((bfd_read ((PTR) & symtype, sizeof (symtype), 1, abfd) - != sizeof (symtype)) - || bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp) - || (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd) - != sizeof (symlength))) - return false; - sym->symbol.the_bfd = abfd; - sym->symbol.name = bfd_alloc (abfd, symlength + 1); - if (!sym->symbol.name) - return false; - if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd) - != symlength) - 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) - == -1) - return (false); - - symcount += i_fxdhdrp->numberOfExternalReferences; - while (abfd->symcount < symcount) - { - if ((*read_import_func) (abfd, sym) == false) - return false; - sym++; - abfd->symcount++; - } - } - - return (true); -} - -/* 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 boolean -nlm_slurp_reloc_fixups (abfd) - bfd *abfd; -{ - boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **, - arelent *)); - bfd_size_type count; - 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; - rels = (arelent *) bfd_alloc (abfd, count * sizeof (arelent)); - secs = (asection **) bfd_alloc (abfd, count * sizeof (asection *)); - 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, (nlm_symbol_type *) NULL, secs, rels) == false) - { - 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 (abfd, sec) - 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) == false) - 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 (abfd, sec, relptr, symbols) - bfd *abfd; - asection *sec; - arelent **relptr; - asymbol **symbols; -{ - arelent *rels; - asection **secs; - bfd_size_type count, i; - unsigned int ret; - - /* Get the relocation fixups. */ - rels = nlm_relocation_fixups (abfd); - if (rels == NULL) - { - if (nlm_slurp_reloc_fixups (abfd) == false) - 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 boolean -nlm_compute_section_file_positions (abfd) - 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 == true) - 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 ((PTR) nlm_version_header (abfd), - sizeof (Nlm_Internal_Version_Header))) - sofar += sizeof (Nlm_External_Version_Header); - if (find_nonzero ((PTR) nlm_extended_header (abfd), - sizeof (Nlm_Internal_Extended_Header))) - sofar += sizeof (Nlm_External_Extended_Header); - if (find_nonzero ((PTR) nlm_copyright_header (abfd), - sizeof (Nlm_Internal_Copyright_Header))) - sofar += (sizeof (Nlm_External_Copyright_Header) - + nlm_copyright_header (abfd)->copyrightMessageLength + 1); - if (find_nonzero ((PTR) nlm_custom_header (abfd), - sizeof (Nlm_Internal_Custom_Header))) - sofar += (sizeof (Nlm_External_Custom_Header) - + nlm_custom_header (abfd)->hdrLength); - if (find_nonzero ((PTR) 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 != (asection *) NULL; sec = sec->next) - { - flagword f; - - sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power); - - f = bfd_get_section_flags (abfd, sec); - if (f & SEC_CODE) - { - text += sec->_raw_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->_raw_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->_raw_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 != (asection *) NULL; sec = sec->next) - { - flagword f; - - f = bfd_get_section_flags (abfd, sec); - - if (f & SEC_CODE) - { - sec->filepos = text_ptr; - text_ptr += sec->_raw_size; - } - else if (f & SEC_DATA) - { - sec->filepos = data_ptr; - data_ptr += sec->_raw_size; - } - else if (f & SEC_HAS_CONTENTS) - { - sec->filepos = other_ptr; - other_ptr += sec->_raw_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->_raw_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->_raw_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. */ - -boolean -nlm_set_section_contents (abfd, section, location, offset, count) - bfd *abfd; - asection *section; - PTR location; - file_ptr offset; - bfd_size_type count; -{ - if (abfd->output_has_begun == false - && nlm_compute_section_file_positions (abfd) == false) - 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) - { - boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR, - 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, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 - || bfd_write (location, 1, 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 (p1, p2) - 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. */ - -boolean -nlm_write_object_contents (abfd) - bfd *abfd; -{ - asection *sec; - boolean (*write_import_func) PARAMS ((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; - boolean (*write_prefix_func) PARAMS ((bfd *)); - unsigned char *fixed_header = NULL; - - fixed_header = ((unsigned char *) - bfd_malloc ((size_t) nlm_fixed_header_size (abfd))); - if (fixed_header == NULL) - goto error_return; - - if (abfd->output_has_begun == false - && nlm_compute_section_file_positions (abfd) == false) - goto error_return; - - /* Write out the variable length headers. */ - if (bfd_seek (abfd, - nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd), - SEEK_SET) != 0) - goto error_return; - if (nlm_swap_variable_header_out (abfd) == false - || nlm_swap_auxiliary_headers_out (abfd) == false) - { - 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 != (asection *) 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) == false) - 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. */ - external_relocs = - (struct reloc_and_sec *) bfd_alloc (abfd, - (external_reloc_count - * sizeof (struct reloc_and_sec))); - if (external_relocs == (struct reloc_and_sec *) NULL) - goto error_return; - i = 0; - for (sec = abfd->sections; sec != (asection *) 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 ((PTR) 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]) - == false) - 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 != (asymbol **) NULL) - { - bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *)); - boolean (*write_export_func) PARAMS ((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) == false) - goto error_return; - } - else - { - len = strlen (sym->name); - if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) - != sizeof (bfd_byte)) - || bfd_write (sym->name, len, 1, abfd) != len) - goto error_return; - - put_word (abfd, offset, temp); - if (bfd_write (temp, sizeof (temp), 1, 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_write (&type, sizeof (bfd_byte), 1, abfd) - != sizeof (bfd_byte)) - goto error_return; - - put_word (abfd, offset, temp); - if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) - goto error_return; - - len = strlen (sym->name); - if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) - != sizeof (bfd_byte)) - || bfd_write (sym->name, len, 1, 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, 0, SEEK_SET) != 0) - goto error_return; - - write_prefix_func = nlm_write_prefix_func (abfd); - if (write_prefix_func) - { - if ((*write_prefix_func) (abfd) == false) - 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_write (fixed_header, nlm_fixed_header_size (abfd), 1, 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; -} |