* Finish basic read-write support for SOM archive libraries. Bugs
surely remain as this hasn't been tested all that much. * som.c (SOM_LST_HASH_SIZE, SOM_LST_MODULE_LIMIT): Define. (struct som_misc_symbol_info): New structure to hold info necessary to build both normal and library symbol tables. (som_derive_misc_symbol_info): New function to derive info necessary to build both normal and library symbol tables. (som_build_and_write_symbol_table): Use new function to derive misc symbol information. (som_slurp_symbol_table): Update backend private data for symbols appropriately. (som_bfd_prep_for_ar_write): New function. (som_bfd_ar_symbol_hash): New function. (som_bfd_ar_write_symbol_stuff): New function. (som_write_armap): Flesh out. (som_vec): Fix ar padding character. * som.c: Consistently use memset rather than bzero.
This commit is contained in:
Jeff Law
parent
caa0901f00
commit
6e033f8639
2 changed files with 595 additions and 122 deletions
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@ -1,3 +1,24 @@
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Mon Feb 14 22:55:20 1994 Jeffrey A. Law (law@snake.cs.utah.edu)
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* Finish basic read-write support for SOM archive libraries. Bugs
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surely remain as this hasn't been tested all that much.
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* som.c (SOM_LST_HASH_SIZE, SOM_LST_MODULE_LIMIT): Define.
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(struct som_misc_symbol_info): New structure to hold info necessary
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to build both normal and library symbol tables.
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(som_derive_misc_symbol_info): New function to derive info necessary
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to build both normal and library symbol tables.
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(som_build_and_write_symbol_table): Use new function to derive misc
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symbol information.
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(som_slurp_symbol_table): Update backend private data for symbols
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appropriately.
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(som_bfd_prep_for_ar_write): New function.
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(som_bfd_ar_symbol_hash): New function.
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(som_bfd_ar_write_symbol_stuff): New function.
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(som_write_armap): Flesh out.
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(som_vec): Fix ar padding character.
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* som.c: Consistently use memset rather than bzero.
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Mon Feb 14 17:02:28 1994 Stu Grossman (grossman at cygnus.com)
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* coff-rs6000.c: Add Lynx core file support, use HOST_AIX, where
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@ -14,6 +35,7 @@ Sun Feb 13 14:30:00 1994 Jeffrey A. Law (law@snake.cs.utah.edu)
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* som.h (som_symbol_data): Safely access backend private data
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for BFD symbols. All callers changed.
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* Read-only SOM archive support.
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* som.c (som_bfd_count_ar_symbols): New helper function.
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(som_bfd_fill_in_ar_symbols): New helper function.
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(som_slurp_armap): New function to read a SOM LST.
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695
bfd/som.c
695
bfd/som.c
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@ -72,6 +72,11 @@
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#define SOM_TMP_BUFSIZE 8192
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/* Size of the hash table in archives. */
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#define SOM_LST_HASH_SIZE 31
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/* Max number of SOMs to be found in an archive. */
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#define SOM_LST_MODULE_LIMIT 1024
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/* SOM allows any one of the four previous relocations to be reused
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with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP
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@ -108,6 +113,17 @@ struct section_to_type
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char type;
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};
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/* Assorted symbol information that needs to be derived from the BFD symbol
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and/or the BFD backend private symbol data. */
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struct som_misc_symbol_info
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{
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unsigned int symbol_type;
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unsigned int symbol_scope;
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unsigned int arg_reloc;
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unsigned int symbol_info;
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unsigned int symbol_value;
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};
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/* Forward declarations */
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static boolean som_mkobject PARAMS ((bfd *));
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@ -199,7 +215,15 @@ static boolean som_bfd_fill_in_ar_symbols PARAMS ((bfd *, struct lst_header *,
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static boolean som_slurp_armap PARAMS ((bfd *));
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static boolean som_write_armap PARAMS ((bfd *));
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static boolean som_slurp_extended_name_table PARAMS ((bfd *));
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static void som_bfd_derive_misc_symbol_info PARAMS ((bfd *, asymbol *,
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struct som_misc_symbol_info *));
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static boolean som_bfd_prep_for_ar_write PARAMS ((bfd *, unsigned int *,
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unsigned int *));
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static unsigned int som_bfd_ar_symbol_hash PARAMS ((asymbol *));
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static boolean som_bfd_ar_write_symbol_stuff PARAMS ((bfd *, unsigned int,
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unsigned int,
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struct lst_header));
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/* Map SOM section names to POSIX/BSD single-character symbol types.
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This table includes all the standard subspaces as defined in the
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@ -1659,7 +1683,7 @@ setup_sections (abfd, file_hdr)
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/* Initialize save_subspace so we can reliably determine if this
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loop placed any useful values into it. */
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bzero (&save_subspace, sizeof (struct subspace_dictionary_record));
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memset (&save_subspace, 0, sizeof (struct subspace_dictionary_record));
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/* Loop over the rest of the subspaces, building up more sections */
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for (subspace_index = 0; subspace_index < space.subspace_quantity;
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@ -1829,7 +1853,7 @@ som_object_p (abfd)
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/* If the aux_header_size field in the file header is zero, then this
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object is an incomplete executable (a .o file). Do not try to read
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a non-existant auxiliary header. */
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bzero (&aux_hdr, sizeof (struct som_exec_auxhdr));
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memset (&aux_hdr, 0, sizeof (struct som_exec_auxhdr));
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if (file_hdr.aux_header_size != 0)
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{
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if (bfd_read ((PTR) & aux_hdr, 1, AUX_HDR_SIZE, abfd) != AUX_HDR_SIZE)
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@ -2143,7 +2167,7 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
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/* Get a chunk of memory that we can use as buffer space, then throw
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away. */
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tmp_space = alloca (SOM_TMP_BUFSIZE);
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bzero (tmp_space, SOM_TMP_BUFSIZE);
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memset (tmp_space, 0, SOM_TMP_BUFSIZE);
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p = tmp_space;
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/* All the fixups for a particular subspace are emitted in a single
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@ -2432,7 +2456,7 @@ som_write_space_strings (abfd, current_offset, string_sizep)
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/* Get a chunk of memory that we can use as buffer space, then throw
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away. */
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tmp_space = alloca (SOM_TMP_BUFSIZE);
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bzero (tmp_space, SOM_TMP_BUFSIZE);
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memset (tmp_space, 0, SOM_TMP_BUFSIZE);
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p = tmp_space;
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/* Seek to the start of the space strings in preparation for writing
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@ -2527,7 +2551,7 @@ som_write_symbol_strings (abfd, current_offset, syms, num_syms, string_sizep)
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/* Get a chunk of memory that we can use as buffer space, then throw
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away. */
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tmp_space = alloca (SOM_TMP_BUFSIZE);
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bzero (tmp_space, SOM_TMP_BUFSIZE);
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memset (tmp_space, 0, SOM_TMP_BUFSIZE);
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p = tmp_space;
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/* Seek to the start of the space strings in preparation for writing
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@ -3080,6 +3104,108 @@ som_compute_checksum (abfd)
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return checksum;
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}
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static void
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som_bfd_derive_misc_symbol_info (abfd, sym, info)
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bfd *abfd;
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asymbol *sym;
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struct som_misc_symbol_info *info;
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{
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/* Initialize. */
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memset (info, 0, sizeof (struct som_misc_symbol_info));
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/* The HP SOM linker requires detailed type information about
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all symbols (including undefined symbols!). Unfortunately,
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the type specified in an import/export statement does not
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always match what the linker wants. Severe braindamage. */
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/* Section symbols will not have a SOM symbol type assigned to
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them yet. Assign all section symbols type ST_DATA. */
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if (sym->flags & BSF_SECTION_SYM)
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info->symbol_type = ST_DATA;
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else
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{
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/* Common symbols must have scope SS_UNSAT and type
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ST_STORAGE or the linker will choke. */
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if (sym->section == &bfd_com_section)
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{
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info->symbol_scope = SS_UNSAT;
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info->symbol_type = ST_STORAGE;
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}
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/* It is possible to have a symbol without an associated
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type. This happens if the user imported the symbol
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without a type and the symbol was never defined
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locally. If BSF_FUNCTION is set for this symbol, then
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assign it type ST_CODE (the HP linker requires undefined
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external functions to have type ST_CODE rather than ST_ENTRY). */
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
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&& sym->section == &bfd_und_section
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&& sym->flags & BSF_FUNCTION)
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info->symbol_type = ST_CODE;
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/* Handle function symbols which were defined in this file.
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They should have type ST_ENTRY. Also retrieve the argument
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relocation bits from the SOM backend information. */
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY
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|| (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE
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&& (sym->flags & BSF_FUNCTION))
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|| (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
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&& (sym->flags & BSF_FUNCTION)))
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{
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info->symbol_type = ST_ENTRY;
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info->arg_reloc = som_symbol_data (sym)->tc_data.hppa_arg_reloc;
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}
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/* If the type is unknown at this point, it should be
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ST_DATA (functions were handled as special cases above). */
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN)
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info->symbol_type = ST_DATA;
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/* From now on it's a very simple mapping. */
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE)
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info->symbol_type = ST_ABSOLUTE;
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
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info->symbol_type = ST_CODE;
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA)
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info->symbol_type = ST_DATA;
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE)
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info->symbol_type = ST_MILLICODE;
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL)
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info->symbol_type = ST_PLABEL;
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG)
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info->symbol_type = ST_PRI_PROG;
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else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG)
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info->symbol_type = ST_SEC_PROG;
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}
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/* Now handle the symbol's scope. Exported data which is not
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in the common section has scope SS_UNIVERSAL. Note scope
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of common symbols was handled earlier! */
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if (sym->flags & BSF_EXPORT && sym->section != &bfd_com_section)
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info->symbol_scope = SS_UNIVERSAL;
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/* Any undefined symbol at this point has a scope SS_UNSAT. */
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else if (sym->section == &bfd_und_section)
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info->symbol_scope = SS_UNSAT;
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/* Anything else which is not in the common section has scope
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SS_LOCAL. */
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else if (sym->section != &bfd_com_section)
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info->symbol_scope = SS_LOCAL;
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/* Now set the symbol_info field. It has no real meaning
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for undefined or common symbols, but the HP linker will
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choke if it's not set to some "reasonable" value. We
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use zero as a reasonable value. */
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if (sym->section == &bfd_com_section || sym->section == &bfd_und_section)
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info->symbol_info = 0;
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/* For all other symbols, the symbol_info field contains the
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subspace index of the space this symbol is contained in. */
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else
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info->symbol_info = som_section_data (sym->section)->subspace_index;
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/* Set the symbol's value. */
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info->symbol_value = sym->value + sym->section->vma;
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}
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/* Build and write, in one big chunk, the entire symbol table for
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this BFD. */
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@ -3097,127 +3223,30 @@ som_build_and_write_symbol_table (abfd)
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to hold the symbol table as we build it. */
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symtab_size = num_syms * sizeof (struct symbol_dictionary_record);
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som_symtab = (struct symbol_dictionary_record *) alloca (symtab_size);
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bzero (som_symtab, symtab_size);
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memset (som_symtab, 0, symtab_size);
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/* Walk over each symbol. */
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for (i = 0; i < num_syms; i++)
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{
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struct som_misc_symbol_info info;
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/* This is really an index into the symbol strings table.
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By the time we get here, the index has already been
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computed and stored into the name field in the BFD symbol. */
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som_symtab[i].name.n_strx = (int) bfd_syms[i]->name;
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/* The HP SOM linker requires detailed type information about
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all symbols (including undefined symbols!). Unfortunately,
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the type specified in an import/export statement does not
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always match what the linker wants. Severe braindamage. */
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/* Section symbols will not have a SOM symbol type assigned to
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them yet. Assign all section symbols type ST_DATA. */
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if (bfd_syms[i]->flags & BSF_SECTION_SYM)
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som_symtab[i].symbol_type = ST_DATA;
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else
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{
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/* Common symbols must have scope SS_UNSAT and type
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ST_STORAGE or the linker will choke. */
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if (bfd_syms[i]->section == &bfd_com_section)
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{
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som_symtab[i].symbol_scope = SS_UNSAT;
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som_symtab[i].symbol_type = ST_STORAGE;
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}
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/* Derive SOM information from the BFD symbol. */
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som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info);
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/* It is possible to have a symbol without an associated
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type. This happens if the user imported the symbol
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without a type and the symbol was never defined
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locally. If BSF_FUNCTION is set for this symbol, then
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assign it type ST_CODE (the HP linker requires undefined
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external functions to have type ST_CODE rather than ST_ENTRY. */
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else if ((som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_UNKNOWN)
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&& (bfd_syms[i]->section == &bfd_und_section)
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&& (bfd_syms[i]->flags & BSF_FUNCTION))
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som_symtab[i].symbol_type = ST_CODE;
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/* Handle function symbols which were defined in this file.
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They should have type ST_ENTRY. Also retrieve the argument
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relocation bits from the SOM backend information. */
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else if ((som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_ENTRY)
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|| ((som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_CODE)
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&& (bfd_syms[i]->flags & BSF_FUNCTION))
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|| ((som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_UNKNOWN)
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&& (bfd_syms[i]->flags & BSF_FUNCTION)))
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{
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som_symtab[i].symbol_type = ST_ENTRY;
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som_symtab[i].arg_reloc
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= som_symbol_data (bfd_syms[i])->tc_data.hppa_arg_reloc;
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}
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/* If the type is unknown at this point, it should be
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ST_DATA (functions were handled as special cases above). */
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_UNKNOWN)
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som_symtab[i].symbol_type = ST_DATA;
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/* From now on it's a very simple mapping. */
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_ABSOLUTE)
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som_symtab[i].symbol_type = ST_ABSOLUTE;
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_CODE)
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som_symtab[i].symbol_type = ST_CODE;
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_DATA)
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som_symtab[i].symbol_type = ST_DATA;
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_MILLICODE)
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som_symtab[i].symbol_type = ST_MILLICODE;
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_PLABEL)
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som_symtab[i].symbol_type = ST_PLABEL;
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_PRI_PROG)
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som_symtab[i].symbol_type = ST_PRI_PROG;
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else if (som_symbol_data (bfd_syms[i])->som_type
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== SYMBOL_TYPE_SEC_PROG)
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som_symtab[i].symbol_type = ST_SEC_PROG;
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}
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/* Now handle the symbol's scope. Exported data which is not
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in the common section has scope SS_UNIVERSAL. Note scope
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of common symbols was handled earlier! */
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if (bfd_syms[i]->flags & BSF_EXPORT
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&& bfd_syms[i]->section != &bfd_com_section)
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som_symtab[i].symbol_scope = SS_UNIVERSAL;
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/* Any undefined symbol at this point has a scope SS_UNSAT. */
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else if (bfd_syms[i]->section == &bfd_und_section)
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som_symtab[i].symbol_scope = SS_UNSAT;
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/* Anything else which is not in the common section has scope
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SS_LOCAL. */
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else if (bfd_syms[i]->section != &bfd_com_section)
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som_symtab[i].symbol_scope = SS_LOCAL;
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/* Now set the symbol_info field. It has no real meaning
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for undefined or common symbols, but the HP linker will
|
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choke if it's not set to some "reasonable" value. We
|
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use zero as a reasonable value. */
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if (bfd_syms[i]->section == &bfd_com_section
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|| bfd_syms[i]->section == &bfd_und_section)
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som_symtab[i].symbol_info = 0;
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/* For all other symbols, the symbol_info field contains the
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subspace index of the space this symbol is contained in. */
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else
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som_symtab[i].symbol_info
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= som_section_data (bfd_syms[i]->section)->subspace_index;
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/* Set the symbol's value. */
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som_symtab[i].symbol_value
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= bfd_syms[i]->value + bfd_syms[i]->section->vma;
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/* Now use it. */
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som_symtab[i].symbol_type = info.symbol_type;
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som_symtab[i].symbol_scope = info.symbol_scope;
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som_symtab[i].arg_reloc = info.arg_reloc;
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som_symtab[i].symbol_info = info.symbol_info;
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som_symtab[i].symbol_value = info.symbol_value;
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}
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/* Egad. Everything is ready, seek to the right location and
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/* Everything is ready, seek to the right location and
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scribble out the symbol table. */
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if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0)
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{
|
||||
|
|
@ -3396,6 +3425,29 @@ som_slurp_symbol_table (abfd)
|
|||
|| bufp->symbol_type == ST_ARG_EXT)
|
||||
continue;
|
||||
|
||||
/* Set some private data we care about. */
|
||||
if (bufp->symbol_type == ST_NULL)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
|
||||
else if (bufp->symbol_type == ST_ABSOLUTE)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE;
|
||||
else if (bufp->symbol_type == ST_DATA)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
|
||||
else if (bufp->symbol_type == ST_CODE)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE;
|
||||
else if (bufp->symbol_type == ST_PRI_PROG)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG;
|
||||
else if (bufp->symbol_type == ST_SEC_PROG)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG;
|
||||
else if (bufp->symbol_type == ST_ENTRY)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY;
|
||||
else if (bufp->symbol_type == ST_MILLICODE)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE;
|
||||
else if (bufp->symbol_type == ST_PLABEL)
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL;
|
||||
else
|
||||
som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
|
||||
som_symbol_data (sym)->tc_data.hppa_arg_reloc = bufp->arg_reloc;
|
||||
|
||||
/* Some reasonable defaults. */
|
||||
sym->symbol.the_bfd = abfd;
|
||||
sym->symbol.name = bufp->name.n_strx + stringtab;
|
||||
|
|
@ -3584,8 +3636,8 @@ som_set_reloc_info (fixup, end, internal_relocs, section, symbols, just_count)
|
|||
#define emptystack() (sp == stack)
|
||||
|
||||
som_initialize_reloc_queue (reloc_queue);
|
||||
bzero (variables, sizeof (variables));
|
||||
bzero (stack, sizeof (stack));
|
||||
memset (variables, 0, sizeof (variables));
|
||||
memset (stack, 0, sizeof (stack));
|
||||
count = 0;
|
||||
prev_fixup = 0;
|
||||
sp = stack;
|
||||
|
|
@ -3767,8 +3819,8 @@ som_set_reloc_info (fixup, end, internal_relocs, section, symbols, just_count)
|
|||
count++;
|
||||
/* Now that we've handled a "full" relocation, reset
|
||||
some state. */
|
||||
bzero (variables, sizeof (variables));
|
||||
bzero (stack, sizeof (stack));
|
||||
memset (variables, 0, sizeof (variables));
|
||||
memset (stack, 0, sizeof (stack));
|
||||
}
|
||||
}
|
||||
return count;
|
||||
|
|
@ -4545,12 +4597,411 @@ som_slurp_armap (abfd)
|
|||
return true;
|
||||
}
|
||||
|
||||
/* Write out the LST for the archive. Not supported yet. */
|
||||
/* Begin preparing to write a SOM library symbol table.
|
||||
|
||||
As part of the prep work we need to determine the number of symbols
|
||||
and the size of the associated string section. */
|
||||
|
||||
static boolean
|
||||
som_bfd_prep_for_ar_write (abfd, num_syms, stringsize)
|
||||
bfd *abfd;
|
||||
unsigned int *num_syms, *stringsize;
|
||||
{
|
||||
bfd *curr_bfd = abfd->archive_head;
|
||||
|
||||
/* Some initialization. */
|
||||
*num_syms = 0;
|
||||
*stringsize = 0;
|
||||
|
||||
/* Iterate over each BFD within this archive. */
|
||||
while (curr_bfd != NULL)
|
||||
{
|
||||
unsigned int curr_count, i;
|
||||
asymbol *sym;
|
||||
|
||||
/* Make sure the symbol table has been read, then snag a pointer
|
||||
to it. It's a little slimey to grab the symbols via obj_som_symtab,
|
||||
but doing so avoids allocating lots of extra memory. */
|
||||
if (som_slurp_symbol_table (curr_bfd) == false)
|
||||
return false;
|
||||
|
||||
sym = (asymbol *)obj_som_symtab (curr_bfd);
|
||||
curr_count = bfd_get_symcount (curr_bfd);
|
||||
|
||||
/* Examine each symbol to determine if it belongs in the
|
||||
library symbol table. */
|
||||
for (i = 0; i < curr_count; i++, sym++)
|
||||
{
|
||||
struct som_misc_symbol_info info;
|
||||
|
||||
/* Derive SOM information from the BFD symbol. */
|
||||
som_bfd_derive_misc_symbol_info (curr_bfd, sym, &info);
|
||||
|
||||
/* Should we include this symbol? */
|
||||
if (info.symbol_type == ST_NULL
|
||||
|| info.symbol_type == ST_SYM_EXT
|
||||
|| info.symbol_type == ST_ARG_EXT)
|
||||
continue;
|
||||
|
||||
/* Only global symbols and unsatisfied commons. */
|
||||
if (info.symbol_scope != SS_UNIVERSAL
|
||||
&& info.symbol_type != ST_STORAGE)
|
||||
continue;
|
||||
|
||||
/* Do no include undefined symbols. */
|
||||
if (sym->section == &bfd_und_section)
|
||||
continue;
|
||||
|
||||
/* Bump the various counters, being careful to honor
|
||||
alignment considerations in the string table. */
|
||||
(*num_syms)++;
|
||||
*stringsize = *stringsize + strlen (sym->name) + 5;
|
||||
while (*stringsize % 4)
|
||||
(*stringsize)++;
|
||||
}
|
||||
|
||||
curr_bfd = curr_bfd->next;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Hash a symbol name based on the hashing algorithm presented in the
|
||||
SOM ABI. */
|
||||
static unsigned int
|
||||
som_bfd_ar_symbol_hash (symbol)
|
||||
asymbol *symbol;
|
||||
{
|
||||
unsigned int len = strlen (symbol->name);
|
||||
|
||||
/* Names with length 1 are special. */
|
||||
if (len == 1)
|
||||
return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0];
|
||||
|
||||
return ((len & 0x7f) << 24) | (symbol->name[1] << 16)
|
||||
| (symbol->name[len-2] << 8) | symbol->name[len-1];
|
||||
}
|
||||
|
||||
/* Do the bulk of the work required to write the SOM library
|
||||
symbol table. */
|
||||
|
||||
static boolean
|
||||
som_bfd_ar_write_symbol_stuff (abfd, nsyms, string_size, lst)
|
||||
bfd *abfd;
|
||||
unsigned int nsyms, string_size;
|
||||
struct lst_header lst;
|
||||
{
|
||||
file_ptr lst_filepos;
|
||||
char *strings, *p;
|
||||
struct lst_symbol_record *lst_syms, *curr_lst_sym;
|
||||
bfd *curr_bfd = abfd->archive_head;
|
||||
unsigned int hash_table[lst.hash_size];
|
||||
struct som_entry som_dict[lst.module_count];
|
||||
struct lst_symbol_record *last_hash_entry[lst.hash_size];
|
||||
unsigned int curr_som_offset, som_index;
|
||||
|
||||
/* Lots of fields are file positions relative to the start
|
||||
of the lst record. So save its location. */
|
||||
lst_filepos = bfd_tell (abfd) - sizeof (struct lst_header);
|
||||
|
||||
/* Some initialization. */
|
||||
memset (hash_table, 0, 4 * lst.hash_size);
|
||||
memset (som_dict, 0, lst.module_count * sizeof (struct som_entry));
|
||||
memset (last_hash_entry, 0,
|
||||
lst.hash_size * sizeof (struct lst_symbol_record *));
|
||||
|
||||
/* Symbols have som_index fields, so we have to keep track of the
|
||||
index of each SOM in the archive.
|
||||
|
||||
The SOM dictionary has (among other things) the absolute file
|
||||
position for the SOM which a particular dictionary entry
|
||||
describes. We have to compute that information as we iterate
|
||||
through the SOMs/symbols. */
|
||||
som_index = 0;
|
||||
curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + lst.file_end;
|
||||
|
||||
/* FIXME should be done with buffers just like everything else... */
|
||||
lst_syms = alloca (nsyms * sizeof (struct lst_symbol_record));
|
||||
strings = alloca (string_size);
|
||||
p = strings;
|
||||
curr_lst_sym = lst_syms;
|
||||
|
||||
|
||||
while (curr_bfd != NULL)
|
||||
{
|
||||
unsigned int curr_count, i;
|
||||
asymbol *sym;
|
||||
|
||||
/* Make sure the symbol table has been read, then snag a pointer
|
||||
to it. It's a little slimey to grab the symbols via obj_som_symtab,
|
||||
but doing so avoids allocating lots of extra memory. */
|
||||
if (som_slurp_symbol_table (curr_bfd) == false)
|
||||
return false;
|
||||
|
||||
sym = (asymbol *)obj_som_symtab (curr_bfd);
|
||||
curr_count = bfd_get_symcount (curr_bfd);
|
||||
|
||||
for (i = 0; i < curr_count; i++, sym++)
|
||||
{
|
||||
struct som_misc_symbol_info info;
|
||||
|
||||
/* Derive SOM information from the BFD symbol. */
|
||||
som_bfd_derive_misc_symbol_info (curr_bfd, sym, &info);
|
||||
|
||||
/* Should we include this symbol? */
|
||||
if (info.symbol_type == ST_NULL
|
||||
|| info.symbol_type == ST_SYM_EXT
|
||||
|| info.symbol_type == ST_ARG_EXT)
|
||||
continue;
|
||||
|
||||
/* Only global symbols and unsatisfied commons. */
|
||||
if (info.symbol_scope != SS_UNIVERSAL
|
||||
&& info.symbol_type != ST_STORAGE)
|
||||
continue;
|
||||
|
||||
/* Do no include undefined symbols. */
|
||||
if (sym->section == &bfd_und_section)
|
||||
continue;
|
||||
|
||||
/* If this is the first symbol from this SOM, then update
|
||||
the SOM dictionary too. */
|
||||
if (som_dict[som_index].location == 0)
|
||||
{
|
||||
som_dict[som_index].location = curr_som_offset;
|
||||
som_dict[som_index].length = arelt_size (curr_bfd);
|
||||
}
|
||||
|
||||
/* Fill in the lst symbol record. */
|
||||
curr_lst_sym->hidden = 0;
|
||||
curr_lst_sym->secondary_def = 0;
|
||||
curr_lst_sym->symbol_type = info.symbol_type;
|
||||
curr_lst_sym->symbol_scope = info.symbol_scope;
|
||||
curr_lst_sym->check_level = 0;
|
||||
curr_lst_sym->must_qualify = 0;
|
||||
curr_lst_sym->initially_frozen = 0;
|
||||
curr_lst_sym->memory_resident = 0;
|
||||
curr_lst_sym->is_common = (sym->section == &bfd_com_section);
|
||||
curr_lst_sym->dup_common = 0;
|
||||
curr_lst_sym->xleast = 0;
|
||||
curr_lst_sym->arg_reloc = info.arg_reloc;
|
||||
curr_lst_sym->name.n_strx = p - strings + 4;
|
||||
curr_lst_sym->qualifier_name.n_strx = 0;
|
||||
curr_lst_sym->symbol_info = info.symbol_info;
|
||||
curr_lst_sym->symbol_value = info.symbol_value;
|
||||
curr_lst_sym->symbol_descriptor = 0;
|
||||
curr_lst_sym->reserved = 0;
|
||||
curr_lst_sym->som_index = som_index;
|
||||
curr_lst_sym->symbol_key = som_bfd_ar_symbol_hash (sym);
|
||||
curr_lst_sym->next_entry = 0;
|
||||
|
||||
/* Insert into the hash table. */
|
||||
if (hash_table[curr_lst_sym->symbol_key % lst.hash_size])
|
||||
{
|
||||
struct lst_symbol_record *tmp;
|
||||
|
||||
/* There is already something at the head of this hash chain,
|
||||
so tack this symbol onto the end of the chain. */
|
||||
tmp = last_hash_entry[curr_lst_sym->symbol_key % lst.hash_size];
|
||||
tmp->next_entry
|
||||
= (curr_lst_sym - lst_syms) * sizeof (struct lst_symbol_record)
|
||||
+ lst.hash_size * 4
|
||||
+ lst.module_count * sizeof (struct som_entry)
|
||||
+ sizeof (struct lst_header);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* First entry in this hash chain. */
|
||||
hash_table[curr_lst_sym->symbol_key % lst.hash_size]
|
||||
= (curr_lst_sym - lst_syms) * sizeof (struct lst_symbol_record)
|
||||
+ lst.hash_size * 4
|
||||
+ lst.module_count * sizeof (struct som_entry)
|
||||
+ sizeof (struct lst_header);
|
||||
}
|
||||
|
||||
/* Keep track of the last symbol we added to this chain so we can
|
||||
easily update its next_entry pointer. */
|
||||
last_hash_entry[curr_lst_sym->symbol_key % lst.hash_size]
|
||||
= curr_lst_sym;
|
||||
|
||||
|
||||
/* Update the string table. */
|
||||
bfd_put_32 (abfd, strlen (sym->name), p);
|
||||
p += 4;
|
||||
strcpy (p, sym->name);
|
||||
p += strlen (sym->name) + 1;
|
||||
while ((int)p % 4)
|
||||
{
|
||||
bfd_put_8 (abfd, 0, p);
|
||||
p++;
|
||||
}
|
||||
|
||||
/* Head to the next symbol. */
|
||||
curr_lst_sym++;
|
||||
}
|
||||
|
||||
/* Keep track of where each SOM will finally reside; then look
|
||||
at the next BFD. */
|
||||
curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr);
|
||||
curr_bfd = curr_bfd->next;
|
||||
som_index++;
|
||||
}
|
||||
|
||||
/* Now scribble out the hash table. */
|
||||
if (bfd_write ((PTR) hash_table, lst.hash_size, 4, abfd)
|
||||
!= lst.hash_size * 4)
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Then the SOM dictionary. */
|
||||
if (bfd_write ((PTR) som_dict, lst.module_count,
|
||||
sizeof (struct som_entry), abfd)
|
||||
!= lst.module_count * sizeof (struct som_entry))
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* The library symbols. */
|
||||
if (bfd_write ((PTR) lst_syms, nsyms, sizeof (struct lst_symbol_record), abfd)
|
||||
!= nsyms * sizeof (struct lst_symbol_record))
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* And finally the strings. */
|
||||
if (bfd_write ((PTR) strings, string_size, 1, abfd) != string_size)
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Write out the LST for the archive.
|
||||
|
||||
You'll never believe this is really how armaps are handled in SOM... */
|
||||
|
||||
static boolean
|
||||
som_write_armap (abfd)
|
||||
bfd *abfd;
|
||||
{
|
||||
return false;
|
||||
bfd *curr_bfd;
|
||||
struct stat statbuf;
|
||||
unsigned int i, lst_size, nsyms, stringsize;
|
||||
struct ar_hdr hdr;
|
||||
struct lst_header lst;
|
||||
int *p;
|
||||
|
||||
/* We'll use this for the archive's date and mode later. */
|
||||
if (stat (abfd->filename, &statbuf) != 0)
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
/* Fudge factor. */
|
||||
bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60;
|
||||
|
||||
/* Account for the lst header first. */
|
||||
lst_size = sizeof (struct lst_header);
|
||||
|
||||
/* Start building the LST header. */
|
||||
lst.system_id = HP9000S800_ID;
|
||||
lst.a_magic = LIBMAGIC;
|
||||
lst.version_id = VERSION_ID;
|
||||
lst.file_time.secs = 0;
|
||||
lst.file_time.nanosecs = 0;
|
||||
|
||||
lst.hash_loc = lst_size;
|
||||
lst.hash_size = SOM_LST_HASH_SIZE;
|
||||
|
||||
/* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */
|
||||
lst_size += 4 * SOM_LST_HASH_SIZE;
|
||||
|
||||
/* We need to count the number of SOMs in this archive. */
|
||||
curr_bfd = abfd->archive_head;
|
||||
lst.module_count = 0;
|
||||
while (curr_bfd != NULL)
|
||||
{
|
||||
lst.module_count++;
|
||||
curr_bfd = curr_bfd->next;
|
||||
}
|
||||
lst.module_limit = lst.module_count;
|
||||
lst.dir_loc = lst_size;
|
||||
lst_size += sizeof (struct som_entry) * lst.module_count;
|
||||
|
||||
/* We don't support import/export tables, auxiliary headers,
|
||||
or free lists yet. Make the linker work a little harder
|
||||
to make our life easier. */
|
||||
|
||||
lst.export_loc = 0;
|
||||
lst.export_count = 0;
|
||||
lst.import_loc = 0;
|
||||
lst.aux_loc = 0;
|
||||
lst.aux_size = 0;
|
||||
|
||||
/* Count how many symbols we will have on the hash chains and the
|
||||
size of the associated string table. */
|
||||
if (som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize) == false)
|
||||
return false;
|
||||
|
||||
lst_size += sizeof (struct lst_symbol_record) * nsyms;
|
||||
|
||||
/* For the string table. One day we might actually use this info
|
||||
to avoid small seeks/reads when reading archives. */
|
||||
lst.string_loc = lst_size;
|
||||
lst.string_size = stringsize;
|
||||
lst_size += stringsize;
|
||||
|
||||
/* SOM ABI says this must be zero. */
|
||||
lst.free_list = 0;
|
||||
|
||||
lst.file_end = lst_size;
|
||||
|
||||
/* Compute the checksum. Must happen after the entire lst header
|
||||
has filled in. */
|
||||
p = (int *)&lst;
|
||||
for (i = 0; i < sizeof (struct lst_header)/sizeof (int) - 1; i++)
|
||||
lst.checksum ^= *p++;
|
||||
|
||||
sprintf (hdr.ar_name, "/ ");
|
||||
sprintf (hdr.ar_date, "%ld", bfd_ardata (abfd)->armap_timestamp);
|
||||
sprintf (hdr.ar_uid, "%d", getuid ());
|
||||
sprintf (hdr.ar_gid, "%d", getgid ());
|
||||
sprintf (hdr.ar_mode, "%-8o", (unsigned int) statbuf.st_mode);
|
||||
sprintf (hdr.ar_size, "%-10d", (int) lst_size);
|
||||
hdr.ar_fmag[0] = '`';
|
||||
hdr.ar_fmag[1] = '\012';
|
||||
|
||||
/* Turn any nulls into spaces. */
|
||||
for (i = 0; i < sizeof (struct ar_hdr); i++)
|
||||
if (((char *) (&hdr))[i] == '\0')
|
||||
(((char *) (&hdr))[i]) = ' ';
|
||||
|
||||
/* Scribble out the ar header. */
|
||||
if (bfd_write ((PTR) &hdr, 1, sizeof (struct ar_hdr), abfd)
|
||||
!= sizeof (struct ar_hdr))
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Now scribble out the lst header. */
|
||||
if (bfd_write ((PTR) &lst, 1, sizeof (struct lst_header), abfd)
|
||||
!= sizeof (struct lst_header))
|
||||
{
|
||||
bfd_error = system_call_error;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Build and write the armap. */
|
||||
if (som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst) == false)
|
||||
return false;
|
||||
|
||||
/* Done. */
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Apparently the extened names are never used, even though they appear
|
||||
|
|
@ -4606,7 +5057,7 @@ bfd_target som_vec =
|
|||
/* leading_symbol_char: is the first char of a user symbol
|
||||
predictable, and if so what is it */
|
||||
0,
|
||||
' ', /* ar_pad_char */
|
||||
'/', /* ar_pad_char */
|
||||
16, /* ar_max_namelen */
|
||||
3, /* minimum alignment */
|
||||
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
||||
|
|
|
|||
Loading…
Reference in a new issue