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Diffstat (limited to 'gdb/somread.c')
| -rw-r--r-- | gdb/somread.c | 803 |
1 files changed, 803 insertions, 0 deletions
diff --git a/gdb/somread.c b/gdb/somread.c new file mode 100644 index 00000000000..c03abd01832 --- /dev/null +++ b/gdb/somread.c @@ -0,0 +1,803 @@ +/* Read HP PA/Risc object files for GDB. + Copyright 1991, 1992, 1996 Free Software Foundation, Inc. + Written by Fred Fish at Cygnus Support. + +This file is part of GDB. + +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 "defs.h" +#include "bfd.h" +#include <syms.h> +#include "symtab.h" +#include "symfile.h" +#include "objfiles.h" +#include "buildsym.h" +#include "stabsread.h" +#include "gdb-stabs.h" +#include "complaints.h" +#include "gdb_string.h" +#include "demangle.h" +#include "som.h" +#include "libhppa.h" + +/* Various things we might complain about... */ + +static void +som_symfile_init PARAMS ((struct objfile *)); + +static void +som_new_init PARAMS ((struct objfile *)); + +static void +som_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); + +static void +som_symfile_finish PARAMS ((struct objfile *)); + +static void +som_symtab_read PARAMS ((bfd *, struct objfile *, + struct section_offsets *)); + +static struct section_offsets * +som_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); + +/* FIXME: These should really be in a common header somewhere */ + +extern void +hpread_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int)); + +extern void +hpread_symfile_finish PARAMS ((struct objfile *)); + +extern void +hpread_symfile_init PARAMS ((struct objfile *)); + +extern void +do_pxdb PARAMS ((bfd *)); + +/* + +LOCAL FUNCTION + + som_symtab_read -- read the symbol table of a SOM file + +SYNOPSIS + + void som_symtab_read (bfd *abfd, struct objfile *objfile, + struct section_offsets *section_offsets) + +DESCRIPTION + + Given an open bfd, a base address to relocate symbols to, and a + flag that specifies whether or not this bfd is for an executable + or not (may be shared library for example), add all the global + function and data symbols to the minimal symbol table. +*/ + +static void +som_symtab_read (abfd, objfile, section_offsets) + bfd *abfd; + struct objfile *objfile; + struct section_offsets *section_offsets; +{ + unsigned int number_of_symbols; + int val, dynamic; + char *stringtab; + asection *shlib_info; + struct symbol_dictionary_record *buf, *bufp, *endbufp; + char *symname; + CONST int symsize = sizeof (struct symbol_dictionary_record); + CORE_ADDR text_offset, data_offset; + + + text_offset = ANOFFSET (section_offsets, 0); + data_offset = ANOFFSET (section_offsets, 1); + + number_of_symbols = bfd_get_symcount (abfd); + + buf = alloca (symsize * number_of_symbols); + bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET); + val = bfd_read (buf, symsize * number_of_symbols, 1, abfd); + if (val != symsize * number_of_symbols) + error ("Couldn't read symbol dictionary!"); + + stringtab = alloca (obj_som_stringtab_size (abfd)); + bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET); + val = bfd_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd); + if (val != obj_som_stringtab_size (abfd)) + error ("Can't read in HP string table."); + + /* We need to determine if objfile is a dynamic executable (so we + can do the right thing for ST_ENTRY vs ST_CODE symbols). + + There's nothing in the header which easily allows us to do + this. The only reliable way I know of is to check for the + existance of a $SHLIB_INFO$ section with a non-zero size. */ + /* The code below is not a reliable way to check whether an + * executable is dynamic, so I commented it out - RT + * shlib_info = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$"); + * if (shlib_info) + * dynamic = (bfd_section_size (objfile->obfd, shlib_info) != 0); + * else + * dynamic = 0; + */ + /* I replaced the code with a simple check for text offset not being + * zero. Still not 100% reliable, but a more reliable way of asking + * "is this a dynamic executable?" than the above. RT + */ + dynamic = (text_offset != 0); + + endbufp = buf + number_of_symbols; + for (bufp = buf; bufp < endbufp; ++bufp) + { + enum minimal_symbol_type ms_type; + + QUIT; + + switch (bufp->symbol_scope) + { + case SS_UNIVERSAL: + case SS_EXTERNAL: + switch (bufp->symbol_type) + { + case ST_SYM_EXT: + case ST_ARG_EXT: + continue; + + case ST_CODE: + case ST_PRI_PROG: + case ST_SEC_PROG: + case ST_MILLICODE: + symname = bufp->name.n_strx + stringtab; + ms_type = mst_text; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + break; + + case ST_ENTRY: + symname = bufp->name.n_strx + stringtab; + /* For a dynamic executable, ST_ENTRY symbols are + the stubs, while the ST_CODE symbol is the real + function. */ + if (dynamic) + ms_type = mst_solib_trampoline; + else + ms_type = mst_text; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + break; + + case ST_STUB: + symname = bufp->name.n_strx + stringtab; + ms_type = mst_solib_trampoline; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + break; + + case ST_DATA: + symname = bufp->name.n_strx + stringtab; + bufp->symbol_value += data_offset; + ms_type = mst_data; + break; + default: + continue; + } + break; + +#if 0 + /* SS_GLOBAL and SS_LOCAL are two names for the same thing (!). */ + case SS_GLOBAL: +#endif + case SS_LOCAL: + switch (bufp->symbol_type) + { + case ST_SYM_EXT: + case ST_ARG_EXT: + continue; + + case ST_CODE: + symname = bufp->name.n_strx + stringtab; + ms_type = mst_file_text; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + + check_strange_names: + /* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local + label prefixes for stabs, constant data, etc. So we need + only filter out L$ symbols which are left in due to + limitations in how GAS generates SOM relocations. + + When linking in the HPUX C-library the HP linker has + the nasty habit of placing section symbols from the literal + subspaces in the middle of the program's text. Filter + those out as best we can. Check for first and last character + being '$'. + + And finally, the newer HP compilers emit crud like $PIC_foo$N + in some circumstance (PIC code I guess). It's also claimed + that they emit D$ symbols too. What stupidity. */ + if ((symname[0] == 'L' && symname[1] == '$') + || (symname[0] == '$' && symname[strlen(symname) - 1] == '$') + || (symname[0] == 'D' && symname[1] == '$') + || (strncmp (symname, "$PIC", 4) == 0)) + continue; + break; + + case ST_PRI_PROG: + case ST_SEC_PROG: + case ST_MILLICODE: + symname = bufp->name.n_strx + stringtab; + ms_type = mst_file_text; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + break; + + case ST_ENTRY: + symname = bufp->name.n_strx + stringtab; + /* For a dynamic executable, ST_ENTRY symbols are + the stubs, while the ST_CODE symbol is the real + function. */ + if (dynamic) + ms_type = mst_solib_trampoline; + else + ms_type = mst_file_text; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + break; + + case ST_STUB: + symname = bufp->name.n_strx + stringtab; + ms_type = mst_solib_trampoline; + bufp->symbol_value += text_offset; +#ifdef SMASH_TEXT_ADDRESS + SMASH_TEXT_ADDRESS (bufp->symbol_value); +#endif + break; + + + case ST_DATA: + symname = bufp->name.n_strx + stringtab; + bufp->symbol_value += data_offset; + ms_type = mst_file_data; + goto check_strange_names; + + default: + continue; + } + break; + + /* This can happen for common symbols when -E is passed to the + final link. No idea _why_ that would make the linker force + common symbols to have an SS_UNSAT scope, but it does. + + This also happens for weak symbols, but their type is + ST_DATA. */ + case SS_UNSAT: + switch (bufp->symbol_type) + { + case ST_STORAGE: + case ST_DATA: + symname = bufp->name.n_strx + stringtab; + bufp->symbol_value += data_offset; + ms_type = mst_data; + break; + + default: + continue; + } + break; + + default: + continue; + } + + if (bufp->name.n_strx > obj_som_stringtab_size (abfd)) + error ("Invalid symbol data; bad HP string table offset: %d", + bufp->name.n_strx); + + prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type, + objfile); + } +} + +/* Scan and build partial symbols for a symbol file. + We have been initialized by a call to som_symfile_init, which + currently does nothing. + + SECTION_OFFSETS is a set of offsets to apply to relocate the symbols + in each section. This is ignored, as it isn't needed for SOM. + + MAINLINE is true if we are reading the main symbol + table (as opposed to a shared lib or dynamically loaded file). + + This function only does the minimum work necessary for letting the + user "name" things symbolically; it does not read the entire symtab. + Instead, it reads the external and static symbols and puts them in partial + symbol tables. When more extensive information is requested of a + file, the corresponding partial symbol table is mutated into a full + fledged symbol table by going back and reading the symbols + for real. + + We look for sections with specific names, to tell us what debug + format to look for: FIXME!!! + + somstab_build_psymtabs() handles STABS symbols. + + Note that SOM files have a "minimal" symbol table, which is vaguely + reminiscent of a COFF symbol table, but has only the minimal information + necessary for linking. We process this also, and use the information to + build gdb's minimal symbol table. This gives us some minimal debugging + capability even for files compiled without -g. */ + +static void +som_symfile_read (objfile, section_offsets, mainline) + struct objfile *objfile; + struct section_offsets *section_offsets; + int mainline; +{ + bfd *abfd = objfile->obfd; + struct cleanup *back_to; + + do_pxdb (symfile_bfd_open (objfile->name)); + + init_minimal_symbol_collection (); + back_to = make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0); + + /* Read in the import list and the export list. Currently + the export list isn't used; the import list is used in + hp-symtab-read.c to handle static vars declared in other + shared libraries. */ + init_import_symbols (objfile); +#if 0 /* Export symbols not used today 1997-08-05 */ + init_export_symbols (objfile); +#else + objfile->export_list = NULL; + objfile->export_list_size = 0; +#endif + + /* Process the normal SOM symbol table first. + This reads in the DNTT and string table, but doesn't + actually scan the DNTT. It does scan the linker symbol + table and thus build up a "minimal symbol table". */ + + som_symtab_read (abfd, objfile, section_offsets); + + /* Now read information from the stabs debug sections. + This is a no-op for SOM. + Perhaps it is intended for some kind of mixed STABS/SOM + situation? */ + stabsect_build_psymtabs (objfile, section_offsets, mainline, + "$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$"); + + /* Now read the native debug information. + This builds the psymtab. This used to be done via a scan of + the DNTT, but is now done via the PXDB-built quick-lookup tables + together with a scan of the GNTT. See hp-psymtab-read.c. */ + hpread_build_psymtabs (objfile, section_offsets, mainline); + + /* Install any minimal symbols that have been collected as the current + minimal symbols for this objfile. + Further symbol-reading is done incrementally, file-by-file, + in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c + contains the code to do the actual DNTT scanning and symtab building. */ + install_minimal_symbols (objfile); + + /* Force hppa-tdep.c to re-read the unwind descriptors. */ + objfile->obj_private = NULL; + do_cleanups (back_to); +} + +/* Initialize anything that needs initializing when a completely new symbol + file is specified (not just adding some symbols from another file, e.g. a + shared library). + + We reinitialize buildsym, since we may be reading stabs from a SOM file. */ + +static void +som_new_init (ignore) + struct objfile *ignore; +{ + stabsread_new_init (); + buildsym_new_init (); +} + +/* Perform any local cleanups required when we are done with a particular + objfile. I.E, we are in the process of discarding all symbol information + for an objfile, freeing up all memory held for it, and unlinking the + objfile struct from the global list of known objfiles. */ + +static void +som_symfile_finish (objfile) + struct objfile *objfile; +{ + if (objfile -> sym_stab_info != NULL) + { + mfree (objfile -> md, objfile -> sym_stab_info); + } + hpread_symfile_finish (objfile); +} + +/* SOM specific initialization routine for reading symbols. */ + +static void +som_symfile_init (objfile) + struct objfile *objfile; +{ + /* SOM objects may be reordered, so set OBJF_REORDERED. If we + find this causes a significant slowdown in gdb then we could + set it in the debug symbol readers only when necessary. */ + objfile->flags |= OBJF_REORDERED; + hpread_symfile_init (objfile); +} + +/* SOM specific parsing routine for section offsets. + + Plain and simple for now. */ + +static struct section_offsets * +som_symfile_offsets (objfile, addr) + struct objfile *objfile; + CORE_ADDR addr; +{ + struct section_offsets *section_offsets; + int i; + + objfile->num_sections = SECT_OFF_MAX; + section_offsets = (struct section_offsets *) + obstack_alloc (&objfile -> psymbol_obstack, SIZEOF_SECTION_OFFSETS); + + /* First see if we're a shared library. If so, get the section + offsets from the library, else get them from addr. */ + if (!som_solib_section_offsets (objfile, section_offsets)) + { + for (i = 0; i < SECT_OFF_MAX; i++) + ANOFFSET (section_offsets, i) = addr; + } + + return section_offsets; +} + + + +/* Check if a given symbol NAME is in the import list + of OBJFILE. + 1 => true, 0 => false + This is used in hp_symtab_read.c to deal with static variables + that are defined in a different shared library than the one + whose symbols are being processed. */ + +int is_in_import_list (name, objfile) + char * name; + struct objfile * objfile; +{ + register int i; + + if (!objfile || + !name || + !*name) + return 0; + + for (i=0; i < objfile->import_list_size; i++) + if (objfile->import_list[i] && STREQ (name, objfile->import_list[i])) + return 1; + return 0; +} + + +/* Read in and initialize the SOM import list which is present + for all executables and shared libraries. The import list + consists of the symbols that are referenced in OBJFILE but + not defined there. (Variables that are imported are dealt + with as "loc_indirect" vars.) + Return value = number of import symbols read in. */ +int +init_import_symbols (objfile) + struct objfile * objfile; +{ + unsigned int import_list; + unsigned int import_list_size; + unsigned int string_table; + unsigned int string_table_size; + char * string_buffer; + register int i; + register int j; + register int k; + asection * text_section; /* section handle */ + unsigned int dl_header[12]; /* SOM executable header */ + + /* A struct for an entry in the SOM import list */ + typedef struct { + int name; /* index into the string table */ + short dont_care1; /* we don't use this */ + unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */ + unsigned int reserved2 : 8; /* not used */ + } SomImportEntry; + + /* We read 100 entries in at a time from the disk file. */ +# define SOM_READ_IMPORTS_NUM 100 +# define SOM_READ_IMPORTS_CHUNK_SIZE (sizeof (SomImportEntry) * SOM_READ_IMPORTS_NUM) + SomImportEntry buffer[SOM_READ_IMPORTS_NUM]; + + /* Initialize in case we error out */ + objfile->import_list = NULL; + objfile->import_list_size = 0; + +#if 0 /* DEBUGGING */ + printf ("Processing import list for %s\n", objfile->name); +#endif + + /* It doesn't work, for some reason, to read in space $TEXT$; + the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */ + text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$"); + if (!text_section) + return 0; + /* Get the SOM executable header */ + bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int)); + + /* Check header version number for 10.x HP-UX */ + /* Currently we deal only with 10.x systems; on 9.x the version # is 89060912. + FIXME: Change for future HP-UX releases and mods to the SOM executable format */ + if (dl_header[0] != 93092112) + return 0; + + import_list = dl_header[4]; + import_list_size = dl_header[5]; + if (!import_list_size) + return 0; + string_table = dl_header[10]; + string_table_size = dl_header[11]; + if (!string_table_size) + return 0; + + /* Suck in SOM string table */ + string_buffer = (char *) xmalloc (string_table_size); + bfd_get_section_contents (objfile->obfd, text_section, string_buffer, + string_table, string_table_size); + + /* Allocate import list in the psymbol obstack; this has nothing + to do with psymbols, just a matter of convenience. We want the + import list to be freed when the objfile is deallocated */ + objfile->import_list + = (ImportEntry *) obstack_alloc (&objfile->psymbol_obstack, + import_list_size * sizeof (ImportEntry)); + + /* Read in the import entries, a bunch at a time */ + for (j=0, k=0; + j < (import_list_size / SOM_READ_IMPORTS_NUM); + j++) + { + bfd_get_section_contents (objfile->obfd, text_section, buffer, + import_list + j * SOM_READ_IMPORTS_CHUNK_SIZE, + SOM_READ_IMPORTS_CHUNK_SIZE); + for (i=0; i < SOM_READ_IMPORTS_NUM; i++, k++) + { + if (buffer[i].type != (unsigned char) 0) + { + objfile->import_list[k] + = (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1); + strcpy (objfile->import_list[k], string_buffer + buffer[i].name); + /* Some day we might want to record the type and other information too */ + } + else /* null type */ + objfile->import_list[k] = NULL; + +#if 0 /* DEBUGGING */ + printf ("Import String %d:%d (%d), type %d is %s\n", j, i, k, + (int) buffer[i].type, objfile->import_list[k]); +#endif + } + } + + /* Get the leftovers */ + if (k < import_list_size) + bfd_get_section_contents (objfile->obfd, text_section, buffer, + import_list + k * sizeof (SomImportEntry), + (import_list_size - k) * sizeof (SomImportEntry)); + for (i=0; k < import_list_size; i++, k++) + { + if (buffer[i].type != (unsigned char) 0) + { + objfile->import_list[k] + = (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1); + strcpy (objfile->import_list[k], string_buffer + buffer[i].name); + /* Some day we might want to record the type and other information too */ + } + else + objfile->import_list[k] = NULL; +#if 0 /* DEBUGGING */ + printf ("Import String F:%d (%d), type %d, is %s\n", i, k, + (int) buffer[i].type, objfile->import_list[k]); +#endif + } + + objfile->import_list_size = import_list_size; + free (string_buffer); + return import_list_size; +} + +/* Read in and initialize the SOM export list which is present + for all executables and shared libraries. The import list + consists of the symbols that are referenced in OBJFILE but + not defined there. (Variables that are imported are dealt + with as "loc_indirect" vars.) + Return value = number of import symbols read in. */ +int +init_export_symbols (objfile) + struct objfile * objfile; +{ + unsigned int export_list; + unsigned int export_list_size; + unsigned int string_table; + unsigned int string_table_size; + char * string_buffer; + register int i; + register int j; + register int k; + asection * text_section; /* section handle */ + unsigned int dl_header[12]; /* SOM executable header */ + + /* A struct for an entry in the SOM export list */ + typedef struct { + int next; /* for hash table use -- we don't use this */ + int name; /* index into string table */ + int value; /* offset or plabel */ + int dont_care1; /* not used */ + unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */ + char dont_care2; /* not used */ + short dont_care3; /* not used */ + } SomExportEntry; + + /* We read 100 entries in at a time from the disk file. */ +# define SOM_READ_EXPORTS_NUM 100 +# define SOM_READ_EXPORTS_CHUNK_SIZE (sizeof (SomExportEntry) * SOM_READ_EXPORTS_NUM) + SomExportEntry buffer[SOM_READ_EXPORTS_NUM]; + + /* Initialize in case we error out */ + objfile->export_list = NULL; + objfile->export_list_size = 0; + +#if 0 /* DEBUGGING */ + printf ("Processing export list for %s\n", objfile->name); +#endif + + /* It doesn't work, for some reason, to read in space $TEXT$; + the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */ + text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$"); + if (!text_section) + return 0; + /* Get the SOM executable header */ + bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int)); + + /* Check header version number for 10.x HP-UX */ + /* Currently we deal only with 10.x systems; on 9.x the version # is 89060912. + FIXME: Change for future HP-UX releases and mods to the SOM executable format */ + if (dl_header[0] != 93092112) + return 0; + + export_list = dl_header[8]; + export_list_size = dl_header[9]; + if (!export_list_size) + return 0; + string_table = dl_header[10]; + string_table_size = dl_header[11]; + if (!string_table_size) + return 0; + + /* Suck in SOM string table */ + string_buffer = (char *) xmalloc (string_table_size); + bfd_get_section_contents (objfile->obfd, text_section, string_buffer, + string_table, string_table_size); + + /* Allocate export list in the psymbol obstack; this has nothing + to do with psymbols, just a matter of convenience. We want the + export list to be freed when the objfile is deallocated */ + objfile->export_list + = (ExportEntry *) obstack_alloc (&objfile->psymbol_obstack, + export_list_size * sizeof (ExportEntry)); + + /* Read in the export entries, a bunch at a time */ + for (j=0, k=0; + j < (export_list_size / SOM_READ_EXPORTS_NUM); + j++) + { + bfd_get_section_contents (objfile->obfd, text_section, buffer, + export_list + j * SOM_READ_EXPORTS_CHUNK_SIZE, + SOM_READ_EXPORTS_CHUNK_SIZE); + for (i=0; i < SOM_READ_EXPORTS_NUM; i++, k++) + { + if (buffer[i].type != (unsigned char) 0) + { + objfile->export_list[k].name + = (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1); + strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name); + objfile->export_list[k].address = buffer[i].value; + /* Some day we might want to record the type and other information too */ + } + else /* null type */ + { + objfile->export_list[k].name = NULL; + objfile->export_list[k].address = 0; + } +#if 0 /* DEBUGGING */ + printf ("Export String %d:%d (%d), type %d is %s\n", j, i, k, + (int) buffer[i].type, objfile->export_list[k].name); +#endif + } + } + + /* Get the leftovers */ + if (k < export_list_size) + bfd_get_section_contents (objfile->obfd, text_section, buffer, + export_list + k * sizeof (SomExportEntry), + (export_list_size - k) * sizeof (SomExportEntry)); + for (i=0; k < export_list_size; i++, k++) + { + if (buffer[i].type != (unsigned char) 0) + { + objfile->export_list[k].name + = (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1); + strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name); + /* Some day we might want to record the type and other information too */ + objfile->export_list[k].address = buffer[i].value; + } + else + { + objfile->export_list[k].name = NULL; + objfile->export_list[k].address = 0; + } +#if 0 /* DEBUGGING */ + printf ("Export String F:%d (%d), type %d, value %x is %s\n", i, k, + (int) buffer[i].type, buffer[i].value, objfile->export_list[k].name); +#endif + } + + objfile->export_list_size = export_list_size; + free (string_buffer); + return export_list_size; +} + + + +/* Register that we are able to handle SOM object file formats. */ + +static struct sym_fns som_sym_fns = +{ + bfd_target_som_flavour, + som_new_init, /* sym_new_init: init anything gbl to entire symtab */ + som_symfile_init, /* sym_init: read initial info, setup for sym_read() */ + som_symfile_read, /* sym_read: read a symbol file into symtab */ + som_symfile_finish, /* sym_finish: finished with file, cleanup */ + som_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */ + NULL /* next: pointer to next struct sym_fns */ +}; + +void +_initialize_somread () +{ + add_symtab_fns (&som_sym_fns); +} |