+/* Read apollo DST symbol tables and convert to internal format, for GDB.
+ Contributed by Troy Rollo, University of NSW (troy@cbme.unsw.edu.au).
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+ Free Software Foundation, Inc.
+
+ 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. */
+\f
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "breakpoint.h"
+#include "bfd.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include "obstack.h"
+
+#include "gdb_string.h"
+
+#include "dst.h"
+
+CORE_ADDR cur_src_start_addr, cur_src_end_addr;
+dst_sec blocks_info, lines_info, symbols_info;
+
+/* Vector of line number information. */
+
+static struct linetable *line_vector;
+
+/* Index of next entry to go in line_vector_index. */
+
+static int line_vector_index;
+
+/* Last line number recorded in the line vector. */
+
+static int prev_line_number;
+
+/* Number of elements allocated for line_vector currently. */
+
+static int line_vector_length;
+
+static int init_dst_sections (int);
+
+static void read_dst_symtab (struct objfile *);
+
+static void find_dst_sections (bfd *, sec_ptr, PTR);
+
+static void dst_symfile_init (struct objfile *);
+
+static void dst_new_init (struct objfile *);
+
+static void dst_symfile_read (struct objfile *, int);
+
+static void dst_symfile_finish (struct objfile *);
+
+static void dst_end_symtab (struct objfile *);
+
+static void complete_symtab (char *, CORE_ADDR, unsigned int);
+
+static void dst_start_symtab (void);
+
+static void dst_record_line (int, CORE_ADDR);
+
+/* Manage the vector of line numbers. */
+/* FIXME: Use record_line instead. */
+
+static void
+dst_record_line (int line, CORE_ADDR pc)
+{
+ struct linetable_entry *e;
+ /* Make sure line vector is big enough. */
+
+ if (line_vector_index + 2 >= line_vector_length)
+ {
+ line_vector_length *= 2;
+ line_vector = (struct linetable *)
+ xrealloc ((char *) line_vector, sizeof (struct linetable)
+ + (line_vector_length
+ * sizeof (struct linetable_entry)));
+ }
+
+ e = line_vector->item + line_vector_index++;
+ e->line = line;
+ e->pc = pc;
+}
+\f
+/* Start a new symtab for a new source file.
+ It indicates the start of data for one original source file. */
+/* FIXME: use start_symtab, like coffread.c now does. */
+
+static void
+dst_start_symtab (void)
+{
+ /* Initialize the source file line number information for this file. */
+
+ if (line_vector) /* Unlikely, but maybe possible? */
+ xfree (line_vector);
+ line_vector_index = 0;
+ line_vector_length = 1000;
+ prev_line_number = -2; /* Force first line number to be explicit */
+ line_vector = (struct linetable *)
+ xmalloc (sizeof (struct linetable)
+ + line_vector_length * sizeof (struct linetable_entry));
+}
+
+/* Save the vital information from when starting to read a file,
+ for use when closing off the current file.
+ NAME is the file name the symbols came from, START_ADDR is the first
+ text address for the file, and SIZE is the number of bytes of text. */
+
+static void
+complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size)
+{
+ last_source_file = savestring (name, strlen (name));
+ cur_src_start_addr = start_addr;
+ cur_src_end_addr = start_addr + size;
+
+ if (current_objfile->ei.entry_point >= cur_src_start_addr &&
+ current_objfile->ei.entry_point < cur_src_end_addr)
+ {
+ current_objfile->ei.entry_file_lowpc = cur_src_start_addr;
+ current_objfile->ei.entry_file_highpc = cur_src_end_addr;
+ }
+}
+
+/* Finish the symbol definitions for one main source file,
+ close off all the lexical contexts for that file
+ (creating struct block's for them), then make the
+ struct symtab for that file and put it in the list of all such. */
+/* FIXME: Use end_symtab, like coffread.c now does. */
+
+static void
+dst_end_symtab (struct objfile *objfile)
+{
+ register struct symtab *symtab;
+ register struct blockvector *blockvector;
+ register struct linetable *lv;
+
+ /* Create the blockvector that points to all the file's blocks. */
+
+ blockvector = make_blockvector (objfile);
+
+ /* Now create the symtab object for this source file. */
+ symtab = allocate_symtab (last_source_file, objfile);
+
+ /* Fill in its components. */
+ symtab->blockvector = blockvector;
+ symtab->free_code = free_linetable;
+ symtab->free_ptr = 0;
+ symtab->filename = last_source_file;
+ symtab->dirname = NULL;
+ symtab->debugformat = obsavestring ("Apollo DST", 10,
+ &objfile->symbol_obstack);
+ lv = line_vector;
+ lv->nitems = line_vector_index;
+ symtab->linetable = (struct linetable *)
+ xrealloc ((char *) lv, (sizeof (struct linetable)
+ + lv->nitems * sizeof (struct linetable_entry)));
+
+ free_named_symtabs (symtab->filename);
+
+ /* Reinitialize for beginning of new file. */
+ line_vector = 0;
+ line_vector_length = -1;
+ last_source_file = NULL;
+}
+\f
+/* dst_symfile_init ()
+ is the dst-specific initialization routine for reading symbols.
+
+ We will only be called if this is a DST or DST-like file.
+ BFD handles figuring out the format of the file, and code in symtab.c
+ uses BFD's determination to vector to us.
+
+ The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
+
+static void
+dst_symfile_init (struct objfile *objfile)
+{
+ asection *section;
+ bfd *abfd = objfile->obfd;
+
+ init_entry_point_info (objfile);
+
+}
+
+/* This function is called for every section; it finds the outer limits
+ of the line table (minimum and maximum file offset) so that the
+ mainline code can read the whole thing for efficiency. */
+
+/* ARGSUSED */
+static void
+find_dst_sections (bfd *abfd, sec_ptr asect, PTR vpinfo)
+{
+ int size, count;
+ long base;
+ file_ptr offset, maxoff;
+ dst_sec *section;
+
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ size = asect->_raw_size;
+ offset = asect->filepos;
+ base = asect->vma;
+/* End of warning */
+
+ section = NULL;
+ if (!strcmp (asect->name, ".blocks"))
+ section = &blocks_info;
+ else if (!strcmp (asect->name, ".lines"))
+ section = &lines_info;
+ else if (!strcmp (asect->name, ".symbols"))
+ section = &symbols_info;
+ if (!section)
+ return;
+ section->size = size;
+ section->position = offset;
+ section->base = base;
+}
+
+
+/* The BFD for this file -- only good while we're actively reading
+ symbols into a psymtab or a symtab. */
+
+static bfd *symfile_bfd;
+
+/* Read a symbol file, after initialization by dst_symfile_init. */
+/* FIXME! Addr and Mainline are not used yet -- this will not work for
+ shared libraries or add_file! */
+
+/* ARGSUSED */
+static void
+dst_symfile_read (struct objfile *objfile, int mainline)
+{
+ bfd *abfd = objfile->obfd;
+ char *name = bfd_get_filename (abfd);
+ int desc;
+ register int val;
+ int num_symbols;
+ int symtab_offset;
+ int stringtab_offset;
+
+ symfile_bfd = abfd; /* Kludge for swap routines */
+
+/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
+ desc = fileno ((FILE *) (abfd->iostream)); /* File descriptor */
+
+ /* Read the line number table, all at once. */
+ bfd_map_over_sections (abfd, find_dst_sections, (PTR) NULL);
+
+ val = init_dst_sections (desc);
+ if (val < 0)
+ error ("\"%s\": error reading debugging symbol tables\n", name);
+
+ init_minimal_symbol_collection ();
+ make_cleanup_discard_minimal_symbols ();
+
+ /* Now that the executable file is positioned at symbol table,
+ process it and define symbols accordingly. */
+
+ read_dst_symtab (objfile);
+
+ /* Sort symbols alphabetically within each block. */
+
+ {
+ struct symtab *s;
+ for (s = objfile->symtabs; s != NULL; s = s->next)
+ {
+ sort_symtab_syms (s);
+ }
+ }
+
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
+
+ install_minimal_symbols (objfile);
+}
+
+static void
+dst_new_init (struct objfile *ignore)
+{
+ /* Nothin' to do */
+}
+
+/* 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
+dst_symfile_finish (struct objfile *objfile)
+{
+ /* Nothing to do */
+}
+\f
+
+/* Get the next line number from the DST. Returns 0 when we hit an
+ * end directive or cannot continue for any other reason.
+ *
+ * Note that ordinary pc deltas are multiplied by two. Apparently
+ * this is what was really intended.
+ */
+static int
+get_dst_line (signed char **buffer, long *pc)
+{
+ static last_pc = 0;
+ static long last_line = 0;
+ static int last_file = 0;
+ dst_ln_entry_ptr_t entry;
+ int size;
+ dst_src_loc_t *src_loc;
+
+ if (*pc != -1)
+ {
+ last_pc = *pc;
+ *pc = -1;
+ }
+ entry = (dst_ln_entry_ptr_t) * buffer;
+
+ while (dst_ln_ln_delta (*entry) == dst_ln_escape_flag)
+ {
+ switch (entry->esc.esc_code)
+ {
+ case dst_ln_pad:
+ size = 1; /* pad byte */
+ break;
+ case dst_ln_file:
+ /* file escape. Next 4 bytes are a dst_src_loc_t */
+ size = 5;
+ src_loc = (dst_src_loc_t *) (*buffer + 1);
+ last_line = src_loc->line_number;
+ last_file = src_loc->file_index;
+ break;
+ case dst_ln_dln1_dpc1:
+ /* 1 byte line delta, 1 byte pc delta */
+ last_line += (*buffer)[1];
+ last_pc += 2 * (unsigned char) (*buffer)[2];
+ dst_record_line (last_line, last_pc);
+ size = 3;
+ break;
+ case dst_ln_dln2_dpc2:
+ /* 2 bytes line delta, 2 bytes pc delta */
+ last_line += *(short *) (*buffer + 1);
+ last_pc += 2 * (*(short *) (*buffer + 3));
+ size = 5;
+ dst_record_line (last_line, last_pc);
+ break;
+ case dst_ln_ln4_pc4:
+ /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */
+ last_line = *(unsigned long *) (*buffer + 1);
+ last_pc = *(unsigned long *) (*buffer + 5);
+ size = 9;
+ dst_record_line (last_line, last_pc);
+ break;
+ case dst_ln_dln1_dpc0:
+ /* 1 byte line delta, pc delta = 0 */
+ size = 2;
+ last_line += (*buffer)[1];
+ break;
+ case dst_ln_ln_off_1:
+ /* statement escape, stmt # = 1 (2nd stmt on line) */
+ size = 1;
+ break;
+ case dst_ln_ln_off:
+ /* statement escape, stmt # = next byte */
+ size = 2;
+ break;
+ case dst_ln_entry:
+ /* entry escape, next byte is entry number */
+ size = 2;
+ break;
+ case dst_ln_exit:
+ /* exit escape */
+ size = 1;
+ break;
+ case dst_ln_stmt_end:
+ /* gap escape, 4 bytes pc delta */
+ size = 5;
+ /* last_pc += 2 * (*(long *) (*buffer + 1)); */
+ /* Apparently this isn't supposed to actually modify
+ * the pc value. Totally weird.
+ */
+ break;
+ case dst_ln_escape_11:
+ case dst_ln_escape_12:
+ case dst_ln_escape_13:
+ size = 1;
+ break;
+ case dst_ln_nxt_byte:
+ /* This shouldn't happen. If it does, we're SOL */
+ return 0;
+ break;
+ case dst_ln_end:
+ /* end escape, final entry follows */
+ return 0;
+ }
+ *buffer += (size < 0) ? -size : size;
+ entry = (dst_ln_entry_ptr_t) * buffer;
+ }
+ last_line += dst_ln_ln_delta (*entry);
+ last_pc += entry->delta.pc_delta * 2;
+ (*buffer)++;
+ dst_record_line (last_line, last_pc);
+ return 1;
+}
+
+static void
+enter_all_lines (char *buffer, long address)
+{
+ if (buffer)
+ while (get_dst_line (&buffer, &address));
+}
+
+static int
+get_dst_entry (char *buffer, dst_rec_ptr_t *ret_entry)
+{
+ int size;
+ dst_rec_ptr_t entry;
+ static int last_type;
+ int ar_size;
+ static unsigned lu3;
+
+ entry = (dst_rec_ptr_t) buffer;
+ switch (entry->rec_type)
+ {
+ case dst_typ_pad:
+ size = 0;
+ break;
+ case dst_typ_comp_unit:
+ size = sizeof (DST_comp_unit (entry));
+ break;
+ case dst_typ_section_tab:
+ size = sizeof (DST_section_tab (entry))
+ + ((int) DST_section_tab (entry).number_of_sections
+ - dst_dummy_array_size) * sizeof (long);
+ break;
+ case dst_typ_file_tab:
+ size = sizeof (DST_file_tab (entry))
+ + ((int) DST_file_tab (entry).number_of_files
+ - dst_dummy_array_size) * sizeof (dst_file_desc_t);
+ break;
+ case dst_typ_block:
+ size = sizeof (DST_block (entry))
+ + ((int) DST_block (entry).n_of_code_ranges
+ - dst_dummy_array_size) * sizeof (dst_code_range_t);
+ break;
+ case dst_typ_5:
+ size = -1;
+ break;
+ case dst_typ_var:
+ size = sizeof (DST_var (entry)) -
+ sizeof (dst_var_loc_long_t) * dst_dummy_array_size +
+ DST_var (entry).no_of_locs *
+ (DST_var (entry).short_locs ?
+ sizeof (dst_var_loc_short_t) :
+ sizeof (dst_var_loc_long_t));
+ break;
+ case dst_typ_pointer:
+ size = sizeof (DST_pointer (entry));
+ break;
+ case dst_typ_array:
+ size = sizeof (DST_array (entry));
+ break;
+ case dst_typ_subrange:
+ size = sizeof (DST_subrange (entry));
+ break;
+ case dst_typ_set:
+ size = sizeof (DST_set (entry));
+ break;
+ case dst_typ_implicit_enum:
+ size = sizeof (DST_implicit_enum (entry))
+ + ((int) DST_implicit_enum (entry).nelems
+ - dst_dummy_array_size) * sizeof (dst_rel_offset_t);
+ break;
+ case dst_typ_explicit_enum:
+ size = sizeof (DST_explicit_enum (entry))
+ + ((int) DST_explicit_enum (entry).nelems
+ - dst_dummy_array_size) * sizeof (dst_enum_elem_t);
+ break;
+ case dst_typ_short_rec:
+ size = sizeof (DST_short_rec (entry))
+ + DST_short_rec (entry).nfields * sizeof (dst_short_field_t)
+ - dst_dummy_array_size * sizeof (dst_field_t);
+ break;
+ case dst_typ_short_union:
+ size = sizeof (DST_short_union (entry))
+ + DST_short_union (entry).nfields * sizeof (dst_short_field_t)
+ - dst_dummy_array_size * sizeof (dst_field_t);
+ break;
+ case dst_typ_file:
+ size = sizeof (DST_file (entry));
+ break;
+ case dst_typ_offset:
+ size = sizeof (DST_offset (entry));
+ break;
+ case dst_typ_alias:
+ size = sizeof (DST_alias (entry));
+ break;
+ case dst_typ_signature:
+ size = sizeof (DST_signature (entry)) +
+ ((int) DST_signature (entry).nargs -
+ dst_dummy_array_size) * sizeof (dst_arg_t);
+ break;
+ case dst_typ_21:
+ size = -1;
+ break;
+ case dst_typ_old_label:
+ size = sizeof (DST_old_label (entry));
+ break;
+ case dst_typ_scope:
+ size = sizeof (DST_scope (entry));
+ break;
+ case dst_typ_end_scope:
+ size = 0;
+ break;
+ case dst_typ_25:
+ case dst_typ_26:
+ size = -1;
+ break;
+ case dst_typ_string_tab:
+ case dst_typ_global_name_tab:
+ size = sizeof (DST_string_tab (entry))
+ + DST_string_tab (entry).length
+ - dst_dummy_array_size;
+ break;
+ case dst_typ_forward:
+ size = sizeof (DST_forward (entry));
+ get_dst_entry ((char *) entry + DST_forward (entry).rec_off, &entry);
+ break;
+ case dst_typ_aux_size:
+ size = sizeof (DST_aux_size (entry));
+ break;
+ case dst_typ_aux_align:
+ size = sizeof (DST_aux_align (entry));
+ break;
+ case dst_typ_aux_field_size:
+ size = sizeof (DST_aux_field_size (entry));
+ break;
+ case dst_typ_aux_field_off:
+ size = sizeof (DST_aux_field_off (entry));
+ break;
+ case dst_typ_aux_field_align:
+ size = sizeof (DST_aux_field_align (entry));
+ break;
+ case dst_typ_aux_qual:
+ size = sizeof (DST_aux_qual (entry));
+ break;
+ case dst_typ_aux_var_bound:
+ size = sizeof (DST_aux_var_bound (entry));
+ break;
+ case dst_typ_extension:
+ size = DST_extension (entry).rec_size;
+ break;
+ case dst_typ_string:
+ size = sizeof (DST_string (entry));
+ break;
+ case dst_typ_old_entry:
+ size = 48; /* Obsolete entry type */
+ break;
+ case dst_typ_const:
+ size = sizeof (DST_const (entry))
+ + DST_const (entry).value.length
+ - sizeof (DST_const (entry).value.val);
+ break;
+ case dst_typ_reference:
+ size = sizeof (DST_reference (entry));
+ break;
+ case dst_typ_old_record:
+ case dst_typ_old_union:
+ case dst_typ_record:
+ case dst_typ_union:
+ size = sizeof (DST_record (entry))
+ + ((int) DST_record (entry).nfields
+ - dst_dummy_array_size) * sizeof (dst_field_t);
+ break;
+ case dst_typ_aux_type_deriv:
+ size = sizeof (DST_aux_type_deriv (entry));
+ break;
+ case dst_typ_locpool:
+ size = sizeof (DST_locpool (entry))
+ + ((int) DST_locpool (entry).length -
+ dst_dummy_array_size);
+ break;
+ case dst_typ_variable:
+ size = sizeof (DST_variable (entry));
+ break;
+ case dst_typ_label:
+ size = sizeof (DST_label (entry));
+ break;
+ case dst_typ_entry:
+ size = sizeof (DST_entry (entry));
+ break;
+ case dst_typ_aux_lifetime:
+ size = sizeof (DST_aux_lifetime (entry));
+ break;
+ case dst_typ_aux_ptr_base:
+ size = sizeof (DST_aux_ptr_base (entry));
+ break;
+ case dst_typ_aux_src_range:
+ size = sizeof (DST_aux_src_range (entry));
+ break;
+ case dst_typ_aux_reg_val:
+ size = sizeof (DST_aux_reg_val (entry));
+ break;
+ case dst_typ_aux_unit_names:
+ size = sizeof (DST_aux_unit_names (entry))
+ + ((int) DST_aux_unit_names (entry).number_of_names
+ - dst_dummy_array_size) * sizeof (dst_rel_offset_t);
+ break;
+ case dst_typ_aux_sect_info:
+ size = sizeof (DST_aux_sect_info (entry))
+ + ((int) DST_aux_sect_info (entry).number_of_refs
+ - dst_dummy_array_size) * sizeof (dst_sect_ref_t);
+ break;
+ default:
+ size = -1;
+ break;
+ }
+ if (size == -1)
+ {
+ fprintf_unfiltered (gdb_stderr, "Warning: unexpected DST entry type (%d) found\nLast valid entry was of type: %d\n",
+ (int) entry->rec_type,
+ last_type);
+ fprintf_unfiltered (gdb_stderr, "Last unknown_3 value: %d\n", lu3);
+ size = 0;
+ }
+ else
+ last_type = entry->rec_type;
+ if (size & 1) /* Align on a word boundary */
+ size++;
+ size += 2;
+ *ret_entry = entry;
+ return size;
+}
+
+static int
+next_dst_entry (char **buffer, dst_rec_ptr_t *entry, dst_sec *table)
+{
+ if (*buffer - table->buffer >= table->size)
+ {
+ *entry = NULL;
+ return 0;
+ }
+ *buffer += get_dst_entry (*buffer, entry);
+ return 1;
+}
+
+#define NEXT_BLK(a, b) next_dst_entry(a, b, &blocks_info)
+#define NEXT_SYM(a, b) next_dst_entry(a, b, &symbols_info)
+#define DST_OFFSET(a, b) ((char *) (a) + (b))
+
+static dst_rec_ptr_t section_table = NULL;
+
+char *
+get_sec_ref (dst_sect_ref_t *ref)
+{
+ dst_sec *section = NULL;
+ long offset;
+
+ if (!section_table || !ref->sect_index)
+ return NULL;
+ offset = DST_section_tab (section_table).section_base[ref->sect_index - 1]
+ + ref->sect_offset;
+ if (offset >= blocks_info.base &&
+ offset < blocks_info.base + blocks_info.size)
+ section = &blocks_info;
+ else if (offset >= symbols_info.base &&
+ offset < symbols_info.base + symbols_info.size)
+ section = &symbols_info;
+ else if (offset >= lines_info.base &&
+ offset < lines_info.base + lines_info.size)
+ section = &lines_info;
+ if (!section)
+ return NULL;
+ return section->buffer + (offset - section->base);
+}
+
+CORE_ADDR
+dst_get_addr (int section, long offset)
+{
+ if (!section_table || !section)
+ return 0;
+ return DST_section_tab (section_table).section_base[section - 1] + offset;
+}
+
+CORE_ADDR
+dst_sym_addr (dst_sect_ref_t *ref)
+{
+ if (!section_table || !ref->sect_index)
+ return 0;
+ return DST_section_tab (section_table).section_base[ref->sect_index - 1]
+ + ref->sect_offset;
+}
+
+static struct symbol *
+create_new_symbol (struct objfile *objfile, char *name)
+{
+ struct symbol *sym = (struct symbol *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
+ &objfile->symbol_obstack);
+ SYMBOL_VALUE (sym) = 0;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+ return sym;
+};
+
+static struct type *decode_dst_type (struct objfile *, dst_rec_ptr_t);
+
+static struct type *
+decode_type_desc (struct objfile *objfile, dst_type_t *type_desc,
+ dst_rec_ptr_t base)
+{
+ struct type *type;
+ dst_rec_ptr_t entry;
+ if (type_desc->std_type.user_defined_type)
+ {
+ entry = (dst_rec_ptr_t) DST_OFFSET (base,
+ dst_user_type_offset (*type_desc));
+ type = decode_dst_type (objfile, entry);
+ }
+ else
+ {
+ switch (type_desc->std_type.dtc)
+ {
+ case dst_int8_type:
+ type = builtin_type_signed_char;
+ break;
+ case dst_int16_type:
+ type = builtin_type_short;
+ break;
+ case dst_int32_type:
+ type = builtin_type_long;
+ break;
+ case dst_uint8_type:
+ type = builtin_type_unsigned_char;
+ break;
+ case dst_uint16_type:
+ type = builtin_type_unsigned_short;
+ break;
+ case dst_uint32_type:
+ type = builtin_type_unsigned_long;
+ break;
+ case dst_real32_type:
+ type = builtin_type_float;
+ break;
+ case dst_real64_type:
+ type = builtin_type_double;
+ break;
+ case dst_complex_type:
+ type = builtin_type_complex;
+ break;
+ case dst_dcomplex_type:
+ type = builtin_type_double_complex;
+ break;
+ case dst_bool8_type:
+ type = builtin_type_char;
+ break;
+ case dst_bool16_type:
+ type = builtin_type_short;
+ break;
+ case dst_bool32_type:
+ type = builtin_type_long;
+ break;
+ case dst_char_type:
+ type = builtin_type_char;
+ break;
+ /* The next few are more complex. I will take care
+ * of them properly at a later point.
+ */
+ case dst_string_type:
+ type = builtin_type_void;
+ break;
+ case dst_ptr_type:
+ type = builtin_type_void;
+ break;
+ case dst_set_type:
+ type = builtin_type_void;
+ break;
+ case dst_proc_type:
+ type = builtin_type_void;
+ break;
+ case dst_func_type:
+ type = builtin_type_void;
+ break;
+ /* Back tto some ordinary ones */
+ case dst_void_type:
+ type = builtin_type_void;
+ break;
+ case dst_uchar_type:
+ type = builtin_type_unsigned_char;
+ break;
+ default:
+ type = builtin_type_void;
+ break;
+ }
+ }
+ return type;
+}
+
+struct structure_list
+{
+ struct structure_list *next;
+ struct type *type;
+};
+
+static struct structure_list *struct_list = NULL;
+
+static struct type *
+find_dst_structure (char *name)
+{
+ struct structure_list *element;
+
+ for (element = struct_list; element; element = element->next)
+ if (!strcmp (name, TYPE_NAME (element->type)))
+ return element->type;
+ return NULL;
+}
+
+
+static struct type *
+decode_dst_structure (struct objfile *objfile, dst_rec_ptr_t entry, int code,
+ int version)
+{
+ struct type *type, *child_type;
+ char *struct_name;
+ char *name, *field_name;
+ int i;
+ int fieldoffset, fieldsize;
+ dst_type_t type_desc;
+ struct structure_list *element;
+
+ struct_name = DST_OFFSET (entry, DST_record (entry).noffset);
+ name = concat ((code == TYPE_CODE_UNION) ? "union " : "struct ",
+ struct_name, NULL);
+ type = find_dst_structure (name);
+ if (type)
+ {
+ xfree (name);
+ return type;
+ }
+ type = alloc_type (objfile);
+ TYPE_NAME (type) = obstack_copy0 (&objfile->symbol_obstack,
+ name, strlen (name));
+ xfree (name);
+ TYPE_CODE (type) = code;
+ TYPE_LENGTH (type) = DST_record (entry).size;
+ TYPE_NFIELDS (type) = DST_record (entry).nfields;
+ TYPE_FIELDS (type) = (struct field *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct field) *
+ DST_record (entry).nfields);
+ fieldoffset = fieldsize = 0;
+ INIT_CPLUS_SPECIFIC (type);
+ element = (struct structure_list *)
+ xmalloc (sizeof (struct structure_list));
+ element->type = type;
+ element->next = struct_list;
+ struct_list = element;
+ for (i = 0; i < DST_record (entry).nfields; i++)
+ {
+ switch (version)
+ {
+ case 2:
+ field_name = DST_OFFSET (entry,
+ DST_record (entry).f.ofields[i].noffset);
+ fieldoffset = DST_record (entry).f.ofields[i].foffset * 8 +
+ DST_record (entry).f.ofields[i].bit_offset;
+ fieldsize = DST_record (entry).f.ofields[i].size;
+ type_desc = DST_record (entry).f.ofields[i].type_desc;
+ break;
+ case 1:
+ field_name = DST_OFFSET (entry,
+ DST_record (entry).f.fields[i].noffset);
+ type_desc = DST_record (entry).f.fields[i].type_desc;
+ switch (DST_record (entry).f.fields[i].f.field_loc.format_tag)
+ {
+ case dst_field_byte:
+ fieldoffset = DST_record (entry).f.
+ fields[i].f.field_byte.offset * 8;
+ fieldsize = -1;
+ break;
+ case dst_field_bit:
+ fieldoffset = DST_record (entry).f.
+ fields[i].f.field_bit.byte_offset * 8 +
+ DST_record (entry).f.
+ fields[i].f.field_bit.bit_offset;
+ fieldsize = DST_record (entry).f.
+ fields[i].f.field_bit.nbits;
+ break;
+ case dst_field_loc:
+ fieldoffset += fieldsize;
+ fieldsize = -1;
+ break;
+ }
+ break;
+ case 0:
+ field_name = DST_OFFSET (entry,
+ DST_record (entry).f.sfields[i].noffset);
+ fieldoffset = DST_record (entry).f.sfields[i].foffset;
+ type_desc = DST_record (entry).f.sfields[i].type_desc;
+ if (i < DST_record (entry).nfields - 1)
+ fieldsize = DST_record (entry).f.sfields[i + 1].foffset;
+ else
+ fieldsize = DST_record (entry).size;
+ fieldsize -= fieldoffset;
+ fieldoffset *= 8;
+ fieldsize *= 8;
+ }
+ TYPE_FIELDS (type)[i].name =
+ obstack_copy0 (&objfile->symbol_obstack,
+ field_name, strlen (field_name));
+ TYPE_FIELDS (type)[i].type = decode_type_desc (objfile,
+ &type_desc,
+ entry);
+ if (fieldsize == -1)
+ fieldsize = TYPE_LENGTH (TYPE_FIELDS (type)[i].type) *
+ 8;
+ TYPE_FIELDS (type)[i].bitsize = fieldsize;
+ TYPE_FIELDS (type)[i].bitpos = fieldoffset;
+ }
+ return type;
+}
+
+static struct type *
+decode_dst_type (struct objfile *objfile, dst_rec_ptr_t entry)
+{
+ struct type *child_type, *type, *range_type, *index_type;
+
+ switch (entry->rec_type)
+ {
+ case dst_typ_var:
+ return decode_type_desc (objfile,
+ &DST_var (entry).type_desc,
+ entry);
+ break;
+ case dst_typ_variable:
+ return decode_type_desc (objfile,
+ &DST_variable (entry).type_desc,
+ entry);
+ break;
+ case dst_typ_short_rec:
+ return decode_dst_structure (objfile, entry, TYPE_CODE_STRUCT, 0);
+ case dst_typ_short_union:
+ return decode_dst_structure (objfile, entry, TYPE_CODE_UNION, 0);
+ case dst_typ_union:
+ return decode_dst_structure (objfile, entry, TYPE_CODE_UNION, 1);
+ case dst_typ_record:
+ return decode_dst_structure (objfile, entry, TYPE_CODE_STRUCT, 1);
+ case dst_typ_old_union:
+ return decode_dst_structure (objfile, entry, TYPE_CODE_UNION, 2);
+ case dst_typ_old_record:
+ return decode_dst_structure (objfile, entry, TYPE_CODE_STRUCT, 2);
+ case dst_typ_pointer:
+ return make_pointer_type (
+ decode_type_desc (objfile,
+ &DST_pointer (entry).type_desc,
+ entry),
+ NULL);
+ case dst_typ_array:
+ child_type = decode_type_desc (objfile,
+ &DST_pointer (entry).type_desc,
+ entry);
+ index_type = lookup_fundamental_type (objfile,
+ FT_INTEGER);
+ range_type = create_range_type ((struct type *) NULL,
+ index_type, DST_array (entry).lo_bound,
+ DST_array (entry).hi_bound);
+ return create_array_type ((struct type *) NULL, child_type,
+ range_type);
+ case dst_typ_alias:
+ return decode_type_desc (objfile,
+ &DST_alias (entry).type_desc,
+ entry);
+ default:
+ return builtin_type_int;
+ }
+}
+
+struct symbol_list
+{
+ struct symbol_list *next;
+ struct symbol *symbol;
+};
+
+static struct symbol_list *dst_global_symbols = NULL;
+static int total_globals = 0;
+
+static void
+decode_dst_locstring (char *locstr, struct symbol *sym)
+{
+ dst_loc_entry_t *entry, *next_entry;
+ CORE_ADDR temp;
+ int count = 0;
+
+ while (1)
+ {
+ if (count++ == 100)
+ {
+ fprintf_unfiltered (gdb_stderr, "Error reading locstring\n");
+ break;
+ }
+ entry = (dst_loc_entry_t *) locstr;
+ next_entry = (dst_loc_entry_t *) (locstr + 1);
+ switch (entry->header.code)
+ {
+ case dst_lsc_end: /* End of string */
+ return;
+ case dst_lsc_indirect: /* Indirect through previous. Arg == 6 */
+ /* Or register ax x == arg */
+ if (entry->header.arg < 6)
+ {
+ SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_VALUE (sym) = entry->header.arg + 8;
+ }
+ /* We predict indirects */
+ locstr++;
+ break;
+ case dst_lsc_dreg:
+ SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_VALUE (sym) = entry->header.arg;
+ locstr++;
+ break;
+ case dst_lsc_section: /* Section (arg+1) */
+ SYMBOL_VALUE (sym) = dst_get_addr (entry->header.arg + 1, 0);
+ locstr++;
+ break;
+ case dst_lsc_sec_byte: /* Section (next_byte+1) */
+ SYMBOL_VALUE (sym) = dst_get_addr (locstr[1] + 1, 0);
+ locstr += 2;
+ break;
+ case dst_lsc_add: /* Add (arg+1)*2 */
+ case dst_lsc_sub: /* Subtract (arg+1)*2 */
+ temp = (entry->header.arg + 1) * 2;
+ locstr++;
+ if (*locstr == dst_multiply_256)
+ {
+ temp <<= 8;
+ locstr++;
+ }
+ switch (entry->header.code)
+ {
+ case dst_lsc_add:
+ if (SYMBOL_CLASS (sym) == LOC_LOCAL)
+ SYMBOL_CLASS (sym) = LOC_ARG;
+ SYMBOL_VALUE (sym) += temp;
+ break;
+ case dst_lsc_sub:
+ SYMBOL_VALUE (sym) -= temp;
+ break;
+ }
+ break;
+ case dst_lsc_add_byte:
+ case dst_lsc_sub_byte:
+ switch (entry->header.arg & 0x03)
+ {
+ case 1:
+ temp = (unsigned char) locstr[1];
+ locstr += 2;
+ break;
+ case 2:
+ temp = *(unsigned short *) (locstr + 1);
+ locstr += 3;
+ break;
+ case 3:
+ temp = *(unsigned long *) (locstr + 1);
+ locstr += 5;
+ break;
+ }
+ if (*locstr == dst_multiply_256)
+ {
+ temp <<= 8;
+ locstr++;
+ }
+ switch (entry->header.code)
+ {
+ case dst_lsc_add_byte:
+ if (SYMBOL_CLASS (sym) == LOC_LOCAL)
+ SYMBOL_CLASS (sym) = LOC_ARG;
+ SYMBOL_VALUE (sym) += temp;
+ break;
+ case dst_lsc_sub_byte:
+ SYMBOL_VALUE (sym) -= temp;
+ break;
+ }
+ break;
+ case dst_lsc_sbreg: /* Stack base register (frame pointer). Arg==0 */
+ if (next_entry->header.code != dst_lsc_indirect)
+ {
+ SYMBOL_VALUE (sym) = 0;
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ return;
+ }
+ SYMBOL_VALUE (sym) = 0;
+ SYMBOL_CLASS (sym) = LOC_LOCAL;
+ locstr++;
+ break;
+ default:
+ SYMBOL_VALUE (sym) = 0;
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ return;
+ }
+ }
+}
+
+static struct symbol_list *
+process_dst_symbols (struct objfile *objfile, dst_rec_ptr_t entry, char *name,
+ int *nsyms_ret)
+{
+ struct symbol_list *list = NULL, *element;
+ struct symbol *sym;
+ char *symname;
+ int nsyms = 0;
+ char *location;
+ long line;
+ dst_type_t symtype;
+ struct type *type;
+ dst_var_attr_t attr;
+ dst_var_loc_t loc_type;
+ unsigned loc_index;
+ long loc_value;
+
+ if (!entry)
+ {
+ *nsyms_ret = 0;
+ return NULL;
+ }
+ location = (char *) entry;
+ while (NEXT_SYM (&location, &entry) &&
+ entry->rec_type != dst_typ_end_scope)
+ {
+ if (entry->rec_type == dst_typ_var)
+ {
+ if (DST_var (entry).short_locs)
+ {
+ loc_type = DST_var (entry).locs.shorts[0].loc_type;
+ loc_index = DST_var (entry).locs.shorts[0].loc_index;
+ loc_value = DST_var (entry).locs.shorts[0].location;
+ }
+ else
+ {
+ loc_type = DST_var (entry).locs.longs[0].loc_type;
+ loc_index = DST_var (entry).locs.longs[0].loc_index;
+ loc_value = DST_var (entry).locs.longs[0].location;
+ }
+ if (loc_type == dst_var_loc_external)
+ continue;
+ symname = DST_OFFSET (entry, DST_var (entry).noffset);
+ line = DST_var (entry).src_loc.line_number;
+ symtype = DST_var (entry).type_desc;
+ attr = DST_var (entry).attributes;
+ }
+ else if (entry->rec_type == dst_typ_variable)
+ {
+ symname = DST_OFFSET (entry,
+ DST_variable (entry).noffset);
+ line = DST_variable (entry).src_loc.line_number;
+ symtype = DST_variable (entry).type_desc;
+ attr = DST_variable (entry).attributes;
+ }
+ else
+ {
+ continue;
+ }
+ if (symname && name && !strcmp (symname, name))
+ /* It's the function return value */
+ continue;
+ sym = create_new_symbol (objfile, symname);
+
+ if ((attr & (1 << dst_var_attr_global)) ||
+ (attr & (1 << dst_var_attr_static)))
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ else
+ SYMBOL_CLASS (sym) = LOC_LOCAL;
+ SYMBOL_LINE (sym) = line;
+ SYMBOL_TYPE (sym) = decode_type_desc (objfile, &symtype,
+ entry);
+ SYMBOL_VALUE (sym) = 0;
+ switch (entry->rec_type)
+ {
+ case dst_typ_var:
+ switch (loc_type)
+ {
+ case dst_var_loc_abs:
+ SYMBOL_VALUE_ADDRESS (sym) = loc_value;
+ break;
+ case dst_var_loc_sect_off:
+ case dst_var_loc_ind_sect_off: /* What is this? */
+ SYMBOL_VALUE_ADDRESS (sym) = dst_get_addr (
+ loc_index,
+ loc_value);
+ break;
+ case dst_var_loc_ind_reg_rel: /* What is this? */
+ case dst_var_loc_reg_rel:
+ /* If it isn't fp relative, specify the
+ * register it's relative to.
+ */
+ if (loc_index)
+ {
+ sym->aux_value.basereg = loc_index;
+ }
+ SYMBOL_VALUE (sym) = loc_value;
+ if (loc_value > 0 &&
+ SYMBOL_CLASS (sym) == LOC_BASEREG)
+ SYMBOL_CLASS (sym) = LOC_BASEREG_ARG;
+ break;
+ case dst_var_loc_reg:
+ SYMBOL_VALUE (sym) = loc_index;
+ SYMBOL_CLASS (sym) = LOC_REGISTER;
+ break;
+ }
+ break;
+ case dst_typ_variable:
+ /* External variable..... don't try to interpret
+ * its nonexistant locstring.
+ */
+ if (DST_variable (entry).loffset == -1)
+ continue;
+ decode_dst_locstring (DST_OFFSET (entry,
+ DST_variable (entry).loffset),
+ sym);
+ }
+ element = (struct symbol_list *)
+ xmalloc (sizeof (struct symbol_list));
+
+ if (attr & (1 << dst_var_attr_global))
+ {
+ element->next = dst_global_symbols;
+ dst_global_symbols = element;
+ total_globals++;
+ }
+ else
+ {
+ element->next = list;
+ list = element;
+ nsyms++;
+ }
+ element->symbol = sym;
+ }
+ *nsyms_ret = nsyms;
+ return list;
+}
+
+
+static struct symbol *
+process_dst_function (struct objfile *objfile, dst_rec_ptr_t entry, char *name,
+ CORE_ADDR address)
+{
+ struct symbol *sym;
+ struct type *type, *ftype;
+ dst_rec_ptr_t sym_entry, typ_entry;
+ char *location;
+ struct symbol_list *element;
+
+ type = builtin_type_int;
+ sym = create_new_symbol (objfile, name);
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+
+ if (entry)
+ {
+ location = (char *) entry;
+ do
+ {
+ NEXT_SYM (&location, &sym_entry);
+ }
+ while (sym_entry && sym_entry->rec_type != dst_typ_signature);
+
+ if (sym_entry)
+ {
+ SYMBOL_LINE (sym) =
+ DST_signature (sym_entry).src_loc.line_number;
+ if (DST_signature (sym_entry).result)
+ {
+ typ_entry = (dst_rec_ptr_t)
+ DST_OFFSET (sym_entry,
+ DST_signature (sym_entry).result);
+ type = decode_dst_type (objfile, typ_entry);
+ }
+ }
+ }
+
+ if (!type->function_type)
+ {
+ ftype = alloc_type (objfile);
+ type->function_type = ftype;
+ TYPE_TARGET_TYPE (ftype) = type;
+ TYPE_CODE (ftype) = TYPE_CODE_FUNC;
+ }
+ SYMBOL_TYPE (sym) = type->function_type;
+
+ /* Now add ourselves to the global symbols list */
+ element = (struct symbol_list *)
+ xmalloc (sizeof (struct symbol_list));
+
+ element->next = dst_global_symbols;
+ dst_global_symbols = element;
+ total_globals++;
+ element->symbol = sym;
+
+ return sym;
+}
+
+static struct block *
+process_dst_block (struct objfile *objfile, dst_rec_ptr_t entry)
+{
+ struct block *block;
+ struct symbol *function = NULL;
+ CORE_ADDR address;
+ long size;
+ char *name;
+ dst_rec_ptr_t child_entry, symbol_entry;
+ struct block *child_block;
+ int total_symbols = 0;
+ char fake_name[20];
+ static long fake_seq = 0;
+ struct symbol_list *symlist, *nextsym;
+ int symnum;
+
+ if (DST_block (entry).noffset)
+ name = DST_OFFSET (entry, DST_block (entry).noffset);
+ else
+ name = NULL;
+ if (DST_block (entry).n_of_code_ranges)
+ {
+ address = dst_sym_addr (
+ &DST_block (entry).code_ranges[0].code_start);
+ size = DST_block (entry).code_ranges[0].code_size;
+ }
+ else
+ {
+ address = -1;
+ size = 0;
+ }
+ symbol_entry = (dst_rec_ptr_t) get_sec_ref (&DST_block (entry).symbols_start);
+ switch (DST_block (entry).block_type)
+ {
+ /* These are all really functions. Even the "program" type.
+ * This is because the Apollo OS was written in Pascal, and
+ * in Pascal, the main procedure is described as the Program.
+ * Cute, huh?
+ */
+ case dst_block_procedure:
+ case dst_block_function:
+ case dst_block_subroutine:
+ case dst_block_program:
+ prim_record_minimal_symbol (name, address, mst_text, objfile);
+ function = process_dst_function (
+ objfile,
+ symbol_entry,
+ name,
+ address);
+ enter_all_lines (get_sec_ref (&DST_block (entry).code_ranges[0].lines_start), address);
+ break;
+ case dst_block_block_data:
+ break;
+
+ default:
+ /* GDB has to call it something, and the module name
+ * won't cut it
+ */
+ sprintf (fake_name, "block_%08lx", fake_seq++);
+ function = process_dst_function (
+ objfile, NULL, fake_name, address);
+ break;
+ }
+ symlist = process_dst_symbols (objfile, symbol_entry,
+ name, &total_symbols);
+ block = (struct block *)
+ obstack_alloc (&objfile->symbol_obstack,
+ sizeof (struct block) +
+ (total_symbols - 1) * sizeof (struct symbol *));
+
+ symnum = 0;
+ while (symlist)
+ {
+ nextsym = symlist->next;
+
+ block->sym[symnum] = symlist->symbol;
+
+ xfree (symlist);
+ symlist = nextsym;
+ symnum++;
+ }
+ BLOCK_NSYMS (block) = total_symbols;
+ BLOCK_START (block) = address;
+ BLOCK_END (block) = address + size;
+ BLOCK_SUPERBLOCK (block) = 0;
+ if (function)
+ {
+ SYMBOL_BLOCK_VALUE (function) = block;
+ BLOCK_FUNCTION (block) = function;
+ }
+ else
+ BLOCK_FUNCTION (block) = 0;
+
+ if (DST_block (entry).child_block_off)
+ {
+ child_entry = (dst_rec_ptr_t) DST_OFFSET (entry,
+ DST_block (entry).child_block_off);
+ while (child_entry)
+ {
+ child_block = process_dst_block (objfile, child_entry);
+ if (child_block)
+ {
+ if (BLOCK_START (child_block) <
+ BLOCK_START (block) ||
+ BLOCK_START (block) == -1)
+ BLOCK_START (block) =
+ BLOCK_START (child_block);
+ if (BLOCK_END (child_block) >
+ BLOCK_END (block) ||
+ BLOCK_END (block) == -1)
+ BLOCK_END (block) =
+ BLOCK_END (child_block);
+ BLOCK_SUPERBLOCK (child_block) = block;
+ }
+ if (DST_block (child_entry).sibling_block_off)
+ child_entry = (dst_rec_ptr_t) DST_OFFSET (
+ child_entry,
+ DST_block (child_entry).sibling_block_off);
+ else
+ child_entry = NULL;
+ }
+ }
+ record_pending_block (objfile, block, NULL);
+ return block;
+}
+
+
+static void
+read_dst_symtab (struct objfile *objfile)
+{
+ char *buffer;
+ dst_rec_ptr_t entry, file_table, root_block;
+ char *source_file;
+ struct block *block, *global_block;
+ int symnum;
+ struct symbol_list *nextsym;
+ int module_num = 0;
+ struct structure_list *element;
+
+ current_objfile = objfile;
+ buffer = blocks_info.buffer;
+ while (NEXT_BLK (&buffer, &entry))
+ {
+ if (entry->rec_type == dst_typ_comp_unit)
+ {
+ file_table = (dst_rec_ptr_t) DST_OFFSET (entry,
+ DST_comp_unit (entry).file_table);
+ section_table = (dst_rec_ptr_t) DST_OFFSET (entry,
+ DST_comp_unit (entry).section_table);
+ root_block = (dst_rec_ptr_t) DST_OFFSET (entry,
+ DST_comp_unit (entry).root_block_offset);
+ source_file = DST_OFFSET (file_table,
+ DST_file_tab (file_table).files[0].noffset);
+ /* Point buffer to the start of the next comp_unit */
+ buffer = DST_OFFSET (entry,
+ DST_comp_unit (entry).data_size);
+ dst_start_symtab ();
+
+ block = process_dst_block (objfile, root_block);
+
+ global_block = (struct block *)
+ obstack_alloc (&objfile->symbol_obstack,
+ sizeof (struct block) +
+ (total_globals - 1) *
+ sizeof (struct symbol *));
+ BLOCK_NSYMS (global_block) = total_globals;
+ for (symnum = 0; symnum < total_globals; symnum++)
+ {
+ nextsym = dst_global_symbols->next;
+
+ global_block->sym[symnum] =
+ dst_global_symbols->symbol;
+
+ xfree (dst_global_symbols);
+ dst_global_symbols = nextsym;
+ }
+ dst_global_symbols = NULL;
+ total_globals = 0;
+ BLOCK_FUNCTION (global_block) = 0;
+ BLOCK_START (global_block) = BLOCK_START (block);
+ BLOCK_END (global_block) = BLOCK_END (block);
+ BLOCK_SUPERBLOCK (global_block) = 0;
+ BLOCK_SUPERBLOCK (block) = global_block;
+ record_pending_block (objfile, global_block, NULL);
+
+ complete_symtab (source_file,
+ BLOCK_START (block),
+ BLOCK_END (block) - BLOCK_START (block));
+ module_num++;
+ dst_end_symtab (objfile);
+ }
+ }
+ if (module_num)
+ prim_record_minimal_symbol ("<end_of_program>",
+ BLOCK_END (block), mst_text, objfile);
+ /* One more faked symbol to make sure nothing can ever run off the
+ * end of the symbol table. This one represents the end of the
+ * text space. It used to be (CORE_ADDR) -1 (effectively the highest
+ * int possible), but some parts of gdb treated it as a signed
+ * number and failed comparisons. We could equally use 7fffffff,
+ * but no functions are ever mapped to an address higher than
+ * 40000000
+ */
+ prim_record_minimal_symbol ("<end_of_text>",
+ (CORE_ADDR) 0x40000000,
+ mst_text, objfile);
+ while (struct_list)
+ {
+ element = struct_list;
+ struct_list = element->next;
+ xfree (element);
+ }
+}
+\f
+
+/* Support for line number handling */
+static char *linetab = NULL;
+static long linetab_offset;
+static unsigned long linetab_size;
+
+/* Read in all the line numbers for fast lookups later. Leave them in
+ external (unswapped) format in memory; we'll swap them as we enter
+ them into GDB's data structures. */
+static int
+init_one_section (int chan, dst_sec *secinfo)
+{
+ if (secinfo->size == 0
+ || lseek (chan, secinfo->position, 0) == -1
+ || (secinfo->buffer = xmalloc (secinfo->size)) == NULL
+ || myread (chan, secinfo->buffer, secinfo->size) == -1)
+ return 0;
+ else
+ return 1;
+}
+
+static int
+init_dst_sections (int chan)
+{
+
+ if (!init_one_section (chan, &blocks_info) ||
+ !init_one_section (chan, &lines_info) ||
+ !init_one_section (chan, &symbols_info))
+ return -1;
+ else
+ return 0;
+}
+
+/* Fake up support for relocating symbol addresses. FIXME. */
+
+struct section_offsets dst_symfile_faker =
+{0};
+
+void
+dst_symfile_offsets (struct objfile *objfile, struct section_addr_info *addrs)
+{
+ objfile->num_sections = 1;
+ objfile->section_offsets = &dst_symfile_faker;
+}
+
+/* Register our ability to parse symbols for DST BFD files */
+
+static struct sym_fns dst_sym_fns =
+{
+ /* FIXME: Can this be integrated with coffread.c? If not, should it be
+ a separate flavour like ecoff? */
+ (enum bfd_flavour) -2,
+
+ dst_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ dst_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ dst_symfile_read, /* sym_read: read a symbol file into symtab */
+ dst_symfile_finish, /* sym_finish: finished with file, cleanup */
+ dst_symfile_offsets, /* sym_offsets: xlate external to internal form */
+ NULL /* next: pointer to next struct sym_fns */
+};
+
+void
+_initialize_dstread (void)
+{
+ add_symtab_fns (&dst_sym_fns);
+}
projects / deliverable / binutils-gdb.git / blobdiff