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-rw-r--r--gdb/xcoffread.c1506
1 files changed, 1506 insertions, 0 deletions
diff --git a/gdb/xcoffread.c b/gdb/xcoffread.c
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--- /dev/null
+++ b/gdb/xcoffread.c
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+/* Read AIXcoff symbol tables and convert to internal format, for GDB.
+ Copyright (C) 1986-1991 Free Software Foundation, Inc.
+ Derived from coffread.c, dbxread.c, and a lot of hacking.
+ Contributed by IBM Corporation.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "defs.h"
+#include "bfd.h"
+#include "param.h"
+
+#include <stdio.h>
+
+/* AIX COFF names have a preceeding dot `.' */
+#define NAMES_HAVE_DOT 1
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <ctype.h>
+
+#include "obstack.h"
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+
+#include "symtab.h"
+#include "symfile.h"
+#include "buildsym.h"
+
+#include "internalcoff.h" /* FIXME, internal data from BFD */
+#include "libcoff.h" /* FIXME, internal data from BFD */
+#include "coff-rs6000.h" /* FIXME, raw file-format guts of xcoff */
+
+extern char *index();
+
+static void enter_line_range ();
+static struct symbol *process_xcoff_symbol ();
+static int read_symbol_nvalue ();
+static int read_symbol_lineno ();
+
+
+/* Simplified internal version of coff symbol table information */
+
+struct coff_symbol {
+ char *c_name;
+ int c_symnum; /* symbol number of this entry */
+ int c_nsyms; /* 0 if syment only, 1 if syment + auxent */
+ long c_value;
+ int c_sclass;
+ int c_secnum;
+ unsigned int c_type;
+};
+
+/* The COFF line table, in raw form. */
+static char *linetab = NULL; /* Its actual contents */
+static long linetab_offset; /* Its offset in the file */
+static unsigned long linetab_size; /* Its size */
+
+/* last function's saved coff symbol `cs' */
+
+static struct coff_symbol fcn_cs_saved;
+
+static bfd *symfile_bfd;
+
+/* Core address of start and end of text of current source file.
+ This is calculated from the first function seen after a C_FILE
+ symbol. */
+
+static CORE_ADDR cur_src_start_addr;
+static CORE_ADDR cur_src_end_addr;
+
+/* Core address of the end of the first object file. */
+
+static CORE_ADDR first_object_file_end;
+
+/* pointer to the string table */
+static char *strtbl;
+
+/* length of the string table */
+static int strtbl_len;
+
+/* pointer to debug section */
+static char *debugsec;
+
+/* pointer to the a.out symbol table */
+static char *symtbl;
+
+/* initial symbol-table-debug-string vector length */
+
+#define INITIAL_STABVECTOR_LENGTH 40
+
+struct pending_stabs *global_stabs;
+struct pending_stabs *file_stabs;
+
+/* Nonzero if within a function (so symbols should be local,
+ if nothing says specifically). */
+
+int within_function;
+
+/* Local variables that hold the shift and mask values for the
+ COFF file that we are currently reading. These come back to us
+ from BFD, and are referenced by their macro names, as well as
+ internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF
+ macros from ../internalcoff.h . */
+
+static unsigned local_n_btshft;
+static unsigned local_n_tmask;
+
+#undef N_BTSHFT
+#define N_BTSHFT local_n_btshft
+#undef N_TMASK
+#define N_TMASK local_n_tmask
+
+/* Local variables that hold the sizes in the file of various COFF structures.
+ (We only need to know this to read them from the file -- BFD will then
+ translate the data in them, into `internal_xxx' structs in the right
+ byte order, alignment, etc.) */
+
+static unsigned local_symesz;
+
+/* coff_symfile_init()
+ is the coff-specific initialization routine for reading symbols.
+ It is passed a struct sym_fns which contains, among other things,
+ the BFD for the file whose symbols are being read, and a slot for
+ a pointer to "private data" which we fill with cookies and other
+ treats for coff_symfile_read().
+
+ We will only be called if this is a COFF or COFF-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). */
+
+struct coff_symfile_info {
+ file_ptr min_lineno_offset; /* Where in file lowest line#s are */
+ file_ptr max_lineno_offset; /* 1+last byte of line#s in file */
+};
+
+
+/* Call sort_syms to sort alphabetically
+ the symbols of each block of each symtab. */
+
+static int
+compare_symbols (s1, s2)
+struct symbol **s1, **s2;
+{
+ /* Names that are less should come first. */
+ register int namediff = strcmp (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2));
+ if (namediff != 0)
+ return namediff;
+
+ /* For symbols of the same name, registers should come first. */
+ return ((SYMBOL_CLASS (*s2) == LOC_REGISTER)
+ - (SYMBOL_CLASS (*s1) == LOC_REGISTER));
+}
+
+
+/* Sort a vector of symbols by their value. */
+
+static void
+sort_syms ()
+{
+ register struct symtab *s;
+ register int i, nbl;
+ register struct blockvector *bv;
+ register struct block *b;
+
+ for (s = symtab_list; s; s = s->next)
+ {
+ bv = BLOCKVECTOR (s);
+ nbl = BLOCKVECTOR_NBLOCKS (bv);
+ for (i = 0; i < nbl; i++)
+ {
+ b = BLOCKVECTOR_BLOCK (bv, i);
+ if (BLOCK_SHOULD_SORT (b))
+ qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
+ sizeof (struct symbol *), compare_symbols);
+ }
+ }
+}
+
+
+/* add a given stab string into given stab vector. */
+
+static void
+add_stab_to_list (stabname, stabvector)
+char *stabname;
+struct pending_stabs **stabvector;
+{
+ if ( *stabvector == NULL) {
+ *stabvector = (struct pending_stabs *)
+ xmalloc (sizeof (struct pending_stabs) +
+ INITIAL_STABVECTOR_LENGTH * sizeof (char*));
+ (*stabvector)->count = 0;
+ (*stabvector)->length = INITIAL_STABVECTOR_LENGTH;
+ }
+ else if ((*stabvector)->count >= (*stabvector)->length) {
+ (*stabvector)->length += INITIAL_STABVECTOR_LENGTH;
+ *stabvector = (struct pending_stabs *)
+ xrealloc (*stabvector, sizeof (struct pending_stabs) +
+ (*stabvector)->length * sizeof (char*));
+ }
+ (*stabvector)->stab [(*stabvector)->count++] = stabname;
+}
+
+
+/* for all the stabs in a given stab vector, build appropriate types
+ and fix their symbols in given symbol vector. */
+
+void
+patch_block_stabs (symbols, stabs)
+struct pending *symbols;
+struct pending_stabs *stabs;
+{
+ int ii;
+
+ if (!stabs)
+ return;
+
+ /* for all the stab entries, find their corresponding symbols and
+ patch their types! */
+
+ for (ii=0; ii < stabs->count; ++ii) {
+ char *name = stabs->stab[ii];
+ char *pp = (char*) index (name, ':');
+ struct symbol *sym = find_symbol_in_list (symbols, name, pp-name);
+ if (!sym) {
+ printf ("ERROR! stab symbol not found!\n"); /* FIXME */
+ }
+ else {
+ pp += 2;
+
+ if (*(pp-1) == 'F' || *(pp-1) == 'f')
+ SYMBOL_TYPE (sym) = lookup_function_type (read_type (&pp));
+ else
+ SYMBOL_TYPE (sym) = read_type (&pp);
+ }
+ }
+}
+
+/* Enter a given range of lines into the line vector.
+ can be called in the following two ways:
+ enter_line_range (subfile, beginoffset, endoffset, 0, firstLine) or
+ enter_line_range (subfile, beginoffset, 0, endaddr, firstLine) */
+
+static void
+enter_line_range (subfile, beginoffset, endoffset, endaddr, firstLine)
+ struct subfile *subfile; /* which sub-file to put line#s in */
+ unsigned beginoffset, endoffset; /* offsets to line table */
+ CORE_ADDR endaddr;
+ unsigned *firstLine;
+{
+ char *pp, *limit;
+ CORE_ADDR addr;
+ struct internal_lineno lptr;
+ unsigned local_linesz = coff_data (symfile_bfd)->local_linesz;
+
+ pp = &linetab [beginoffset - linetab_offset];
+ limit = endoffset ? &linetab [endoffset - linetab_offset]
+ : &linetab [linetab_size -1];
+
+ while (pp <= limit) {
+
+ /* Swap and align this lineno entry into lptr. */
+ bfd_coff_swap_lineno_in (symfile_bfd, pp, &lptr);
+
+ /* find the address this line represents */
+ addr = lptr.l_lnno ?
+ lptr.l_addr.l_paddr : read_symbol_nvalue (symtbl, lptr.l_addr.l_symndx);
+
+ if (endaddr && addr >= endaddr)
+ return;
+
+ if (lptr.l_lnno == 0) {
+ *firstLine = read_symbol_lineno (symtbl, lptr.l_addr.l_symndx);
+ --(*firstLine);
+ }
+ else
+ record_line (subfile, *firstLine + lptr.l_lnno, addr);
+
+ pp += local_linesz;
+ }
+}
+
+
+/* Save the vital information 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. */
+
+#define complete_symtab(name, start_addr) { \
+ last_source_file = savestring (name, strlen (name)); \
+ cur_src_start_addr = start_addr; \
+}
+
+
+/* Refill the symbol table input buffer
+ and set the variables that control fetching entries from it.
+ Reports an error if no data available.
+ This function can read past the end of the symbol table
+ (into the string table) but this does no harm. */
+
+/* Reading symbol table has to be fast! Keep the followings as macros, rather
+ than functions. */
+
+#define RECORD_MISC_FUNCTION(NAME, ADDR, TYPE, ALLOCED) \
+{ \
+ char *namestr; \
+ if (ALLOCED) \
+ namestr = (NAME) + 1; \
+ else { \
+ namestr = obstack_copy0 (symbol_obstack, (NAME) + 1, strlen ((NAME)+1)); \
+ (ALLOCED) = 1; \
+ } \
+ prim_record_misc_function (namestr, (ADDR), (TYPE)); \
+ last_recorded_fun = (ADDR); \
+}
+
+
+
+/* aixcoff has static blocks marked in `.bs', `.es' pairs. They cannot be
+ nested. At any given time, a symbol can only be in one static block.
+ This is the base address of current static block, zero if non exists. */
+
+static int static_block_base = 0;
+
+/* true if space for symbol name has been allocated. */
+
+static int symname_alloced = 0;
+
+/* read the whole symbol table of a given bfd. */
+
+void
+read_xcoff_symtab (objfile, nsyms)
+ struct objfile *objfile; /* Object file we're reading from */
+ int nsyms; /* # of symbols */
+{
+ bfd *abfd = objfile->obfd;
+ /* char *symtbl; */ /* Raw symbol table base */
+ char *raw_symbol; /* Pointer into raw seething symbol table */
+ char *raw_auxptr; /* Pointer to first raw aux entry for sym */
+ struct internal_syment symbol[1];
+ union internal_auxent main_aux[1];
+ struct coff_symbol cs[1];
+ CORE_ADDR file_start_addr = 0;
+ CORE_ADDR file_end_addr = 0;
+
+ int next_file_symnum = -1;
+ int just_started = 1;
+ int depth = 0;
+ int val;
+ int fcn_first_line;
+ int fcn_last_line;
+ int fcn_start_addr;
+ long fcn_line_offset;
+ size_t size;
+
+ /* fcn_cs_saved is global because process_xcoff_symbol needs it. */
+ union internal_auxent fcn_aux_saved;
+ struct context_stack *new;
+
+ char *filestring = " _start_ "; /* Name of the current file. */
+ char *last_seen_csect;
+ int last_recorded_fun = 0; /* last recorded fun. value */
+
+ /* Get the appropriate COFF "constants" related to the file we're handling. */
+ N_TMASK = coff_data (abfd)->local_n_tmask;
+ N_BTSHFT = coff_data (abfd)->local_n_btshft;
+ local_symesz = coff_data (abfd)->local_symesz;
+
+ last_source_file = 0;
+ last_seen_csect = 0;
+ last_recorded_fun = 0;
+
+ start_symtab (filestring, (char *)NULL, file_start_addr);
+ symnum = 0;
+ first_object_file_end = 0;
+
+ /* Allocate space for the entire symbol table at once, and read it
+ all in. The bfd is already positioned at the beginning of
+ the symbol table. */
+
+ size = coff_data (abfd)->local_symesz * nsyms;
+ symtbl = xmalloc (size);
+
+ val = bfd_read (symtbl, size, 1, abfd);
+ if (val != size)
+ perror_with_name ("reading symbol table");
+
+ raw_symbol = symtbl;
+
+ while (symnum < nsyms) {
+
+ QUIT; /* make this command interruptable. */
+
+ /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */
+ /* read one symbol into `cs' structure. After processing the whole symbol
+ table, only string table will be kept in memory, symbol table and debug
+ section of aixcoff will be freed. Thus we can mark symbols with names
+ in string table as `alloced'. */
+ {
+ int ii;
+
+ /* Swap and align the symbol into a reasonable C structure. */
+ bfd_coff_swap_sym_in (abfd, raw_symbol, symbol);
+
+ cs->c_symnum = symnum;
+ cs->c_nsyms = symbol->n_numaux;
+ if (symbol->n_zeroes) {
+ symname_alloced = 0;
+ /* We must use the original, unswapped, name here so the name field
+ pointed to by cs->c_name will persist throughout xcoffread. If
+ we use the new field, it gets overwritten for each symbol. */
+ cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name;
+ } else if (symbol->n_sclass & 0x80) {
+ cs->c_name = debugsec + symbol->n_offset;
+ symname_alloced = 0;
+ } else { /* in string table */
+ cs->c_name = strtbl + (int)symbol->n_offset;
+ symname_alloced = 1;
+ }
+ cs->c_value = symbol->n_value;
+ cs->c_sclass = symbol->n_sclass & 0xff;
+ cs->c_secnum = symbol->n_scnum;
+ cs->c_type = (unsigned)symbol->n_type;
+
+ raw_symbol += coff_data (abfd)->local_symesz;
+ ++symnum;
+
+ raw_auxptr = raw_symbol; /* Save addr of first aux entry */
+
+ /* Skip all the auxents associated with this symbol. */
+ for (ii = symbol->n_numaux; ii; --ii ) {
+ raw_symbol += coff_data (abfd)->local_auxesz;
+ ++symnum;
+ }
+ }
+
+ /* if symbol name starts with ".$" or "$", ignore it. */
+ if (cs->c_name[0] == '$' || (cs->c_name[1] == '$' && cs->c_name[0] == '.'))
+ continue;
+
+ if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) {
+ if (last_source_file)
+ end_symtab (cur_src_end_addr, 1, 1, objfile);
+
+ start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0);
+ cur_src_end_addr = first_object_file_end;
+ /* done with all files, everything from here on is globals */
+ }
+
+ /* if explicitly specified as a function, treat is as one. */
+ if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) {
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ main_aux);
+ goto function_entry_point;
+ }
+
+ if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) && cs->c_nsyms == 1)
+ {
+ /* dealing with a symbol with a csect entry. */
+
+# define CSECT(PP) ((PP)->x_csect)
+# define CSECT_LEN(PP) (CSECT(PP).x_scnlen)
+# define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp))
+# define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp))
+# define CSECT_SCLAS(PP) (CSECT(PP).x_smclas)
+
+ /* Convert the auxent to something we can access. */
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ main_aux);
+
+ switch (CSECT_SMTYP (main_aux)) {
+
+ case XTY_ER :
+ continue; /* ignore all external references. */
+
+ case XTY_SD : /* a section description. */
+ {
+ switch (CSECT_SCLAS (main_aux)) {
+
+ case XMC_PR : /* a `.text' csect. */
+ {
+
+ /* A program csect is seen.
+
+ We have to allocate one symbol table for each program csect. Normally
+ gdb prefers one symtab for each compilation unit (CU). In case of AIX, one
+ CU might include more than one prog csect, and they don't have to be
+ adjacent in terms of the space they occupy in memory. Thus, one single
+ CU might get fragmented in the memory and gdb's file start and end address
+ approach does not work! */
+
+ if (last_seen_csect) {
+ complete_symtab (filestring, file_start_addr);
+ cur_src_end_addr = file_end_addr;
+ end_symtab (file_end_addr, 1, 1, objfile);
+ start_symtab ((char *)NULL, (char *)NULL, (CORE_ADDR)0);
+ }
+
+ /* If this is the very first csect seen, basically `__start'. */
+ if (just_started) {
+ first_object_file_end = cs->c_value + CSECT_LEN (main_aux);
+ just_started = 0;
+ }
+
+ file_start_addr = cs->c_value;
+ file_end_addr = cs->c_value + CSECT_LEN (main_aux);
+
+ if (cs->c_name && cs->c_name[0] == '.') {
+ last_seen_csect = cs->c_name;
+ RECORD_MISC_FUNCTION (cs->c_name, cs->c_value, mf_text, symname_alloced);
+ }
+ }
+ continue;
+
+ case XMC_RW :
+ break;
+
+ /* If the section is not a data description, ignore it. Note that
+ uninitialized data will show up as XTY_CM/XMC_RW pair. */
+
+ case XMC_TC0:
+#ifdef XCOFF_ADD_TOC_TO_LOADINFO
+ XCOFF_ADD_TOC_TO_LOADINFO (cs->c_value);
+#endif
+ /* fall down to default case. */
+
+ case XMC_TC : /* ignore toc entries */
+ default : /* any other XMC_XXX */
+ continue;
+ }
+ }
+ break; /* switch CSECT_SCLAS() */
+
+ case XTY_LD :
+
+ /* a function entry point. */
+ if (CSECT_SCLAS (main_aux) == XMC_PR) {
+
+function_entry_point:
+ if (cs->c_value != last_recorded_fun)
+ RECORD_MISC_FUNCTION (cs->c_name, cs->c_value, mf_text,
+ symname_alloced);
+
+ fcn_line_offset = main_aux->x_sym.x_fcnary.x_fcn.x_lnnoptr;
+ fcn_start_addr = cs->c_value;
+
+ /* save the function header info, which will be used
+ when `.bf' is seen. */
+ fcn_cs_saved = *cs;
+ fcn_aux_saved = *main_aux;
+ continue;
+ }
+
+ /* shared library function entry point. */
+ else if (CSECT_SCLAS (main_aux) == XMC_GL) {
+ if (last_recorded_fun != cs->c_value)
+ RECORD_MISC_FUNCTION (cs->c_name, cs->c_value, mf_text,
+ symname_alloced);
+ continue;
+ }
+ break;
+
+ default : /* all other XTY_XXXs */
+ break;
+ } /* switch CSECT_SMTYP() */
+ }
+
+ switch (cs->c_sclass) {
+
+ case C_FILE:
+
+ /* c_value field contains symnum of next .file entry in table
+ or symnum of first global after last .file. */
+
+ next_file_symnum = cs->c_value;
+
+ /* complete symbol table for last object file containing
+ debugging information. */
+
+ /* Whether or not there was a csect in the previous file, we have
+ to call `end_symtab' and `start_symtab' to reset type_vector,
+ line_vector, etc. structures. */
+ complete_symtab (filestring, file_start_addr);
+ cur_src_end_addr = file_end_addr;
+ end_symtab (file_end_addr, 1, 1, objfile);
+ start_symtab (cs->c_name, (char *)NULL, (CORE_ADDR)0);
+ last_seen_csect = 0;
+
+ /* reset file start and end addresses. A compilation unit with no text
+ (only data) should have zero file boundaries. */
+ file_start_addr = file_end_addr = 0;
+
+ filestring = cs->c_name;
+ break;
+
+
+ case C_FCN:
+ if (strcmp (cs->c_name, ".bf") == 0) {
+
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ main_aux);
+
+ within_function = 1;
+
+ /* value contains address of first non-init type code */
+ /* main_aux.x_sym.x_misc.x_lnsz.x_lnno
+ contains line number of '{' } */
+ fcn_first_line = main_aux->x_sym.x_misc.x_lnsz.x_lnno;
+
+ /* Linenos are now processed on a file-by-file, not fn-by-fn, basis.
+ Metin did it, I'm not sure why. FIXME. -- gnu@cygnus.com */
+ /* mark_first_line (fcn_line_offset, cs->c_symnum); */
+
+ new = push_context (0, fcn_start_addr);
+ new->name = process_xcoff_symbol (&fcn_cs_saved);
+ }
+ else if (strcmp (cs->c_name, ".ef") == 0) {
+
+ bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass,
+ main_aux);
+
+ /* the value of .ef is the address of epilogue code;
+ not useful for gdb */
+ /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
+ contains number of lines to '}' */
+
+ fcn_last_line = main_aux->x_sym.x_misc.x_lnsz.x_lnno;
+#if 0
+ enter_linenos (fcn_line_offset, fcn_first_line,
+ fcn_first_line + fcn_last_line);
+#endif
+
+ new = pop_context ();
+ if (context_stack_depth != 0)
+ error ("invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.",
+ symnum);
+
+ finish_block (new->name, &local_symbols, new->old_blocks,
+ new->start_addr,
+ fcn_cs_saved.c_value +
+ fcn_aux_saved.x_sym.x_misc.x_fsize);
+ within_function = 0;
+ }
+ break;
+
+ case C_BSTAT : /* begin static block */
+ static_block_base = read_symbol_nvalue (symtbl, cs->c_value);
+ break;
+
+ case C_ESTAT : /* end of static block */
+ static_block_base = 0;
+ break;
+
+ case C_ARG : /* These are not implemented. */
+ case C_REGPARM :
+ case C_TPDEF :
+ case C_STRTAG :
+ case C_UNTAG :
+ case C_ENTAG :
+ printf ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass);
+ break;
+
+ case C_HIDEXT : /* ignore these.. */
+ case C_LABEL :
+ case C_NULL :
+ break;
+
+ case C_BINCL : /* beginning of include file */
+ push_subfile ();
+ start_subfile (cs->c_name, (char *)0);
+ fcn_first_line = cs->c_value; /* Offset to first lineno of file */
+ break;
+
+ case C_EINCL : /* end of include file */
+ fcn_last_line = cs->c_value; /* Offset to last line number */
+ { long dummy = 0;
+ enter_line_range (current_subfile, fcn_first_line, cs->c_value, 0,
+ &dummy);
+ }
+ start_subfile (pop_subfile (), (char *)0);
+ break;
+
+ case C_BLOCK :
+ if (strcmp (cs->c_name, ".bb") == 0) {
+ depth++;
+ new = push_context (depth, cs->c_value);
+ }
+ else if (strcmp (cs->c_name, ".eb") == 0) {
+ new = pop_context ();
+ if (depth != new->depth)
+ error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.",
+ symnum);
+
+ depth--;
+ if (local_symbols && context_stack_depth > 0) {
+ /* Make a block for the local symbols within. */
+ finish_block (new->name, &local_symbols, new->old_blocks,
+ new->start_addr, cs->c_value);
+ }
+ local_symbols = new->locals;
+ }
+ break;
+
+ default :
+ (void) process_xcoff_symbol (cs);
+ break;
+ }
+
+ } /* while */
+
+ if (last_source_file)
+ end_symtab (cur_src_end_addr, 1, 1, objfile);
+
+ free (symtbl);
+}
+
+#define SYMBOL_DUP(SYMBOL1, SYMBOL2) \
+ (SYMBOL2) = (struct symbol *) \
+ obstack_alloc (symbol_obstack, sizeof (struct symbol)); \
+ *(SYMBOL2) = *(SYMBOL1);
+
+
+#define SYMNAME_ALLOC(NAME, ALLOCED) \
+ (ALLOCED) ? (NAME) : obstack_copy0 (symbol_obstack, (NAME), strlen (NAME));
+
+
+
+/* process one xcoff symbol. */
+
+static struct symbol *
+process_xcoff_symbol (cs)
+ register struct coff_symbol *cs;
+{
+ struct symbol onesymbol;
+ register struct symbol *sym = &onesymbol;
+ struct symbol *sym2 = NULL;
+ struct type *ttype;
+ char *name, *pp, *qq;
+
+ name = cs->c_name;
+ if (name[0] == '.')
+ ++name;
+
+ bzero (sym, sizeof (struct symbol));
+
+ /* default assumptions */
+ SYMBOL_VALUE (sym) = cs->c_value;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+
+ if (ISFCN (cs->c_type)) {
+
+ /* At this point, we don't know the type of the function and assume it
+ is int. This will be patched with the type from its stab entry later
+ on in patch_block_stabs () */
+
+ SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_TYPE (sym) = lookup_function_type (builtin_type_int);
+
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+ SYMBOL_DUP (sym, sym2);
+
+ if (cs->c_sclass == C_EXT)
+ add_symbol_to_list (sym2, &global_symbols);
+ else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT)
+ add_symbol_to_list (sym2, &file_symbols);
+ }
+
+ else {
+
+ /* in case we can't figure out the type, default is `int'. */
+ SYMBOL_TYPE (sym) = builtin_type_int;
+
+ switch (cs->c_sclass)
+ {
+ case C_FUN:
+ if (fcn_cs_saved.c_sclass == C_EXT)
+ add_stab_to_list (name, &global_stabs);
+ else
+ add_stab_to_list (name, &file_stabs);
+ break;
+
+ case C_DECL: /* a type decleration?? */
+ qq = (char*) index (name, ':');
+ if (!qq) /* skip if there is no ':' */
+ return NULL;
+
+ pp = qq + 2;
+ ttype = SYMBOL_TYPE (sym) = read_type (&pp);
+
+ /* read_type() will return null if type (or tag) definition was
+ unnnecessarily duplicated. Also, if the symbol doesn't have a name,
+ there is no need to keep it in symbol table. */
+
+ if (!ttype || name == qq)
+ return NULL;
+
+ if (qq[1] == 'T')
+ SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
+ else if (qq[1] == 't')
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ else {
+ printf ("ERROR: Unrecognized stab string.\n");
+ return NULL;
+ }
+
+ SYMBOL_CLASS (sym) = LOC_TYPEDEF;
+ SYMBOL_NAME (sym) = obsavestring (name, qq-name);
+
+ if (SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE)
+ TYPE_NAME (ttype) = concat (
+ TYPE_CODE (ttype) == TYPE_CODE_UNION ? "union " :
+ TYPE_CODE (ttype) == TYPE_CODE_STRUCT? "struct " : "enum ",
+ SYMBOL_NAME (sym), "");
+
+ else if (!TYPE_NAME (ttype)) /* else, regular typedef. */
+ TYPE_NAME (ttype) = SYMBOL_NAME (sym);
+
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list
+ (sym2, within_function ? &local_symbols : &file_symbols);
+ break;
+
+ case C_GSYM:
+ add_stab_to_list (name, &global_stabs);
+ break;
+
+ case C_PSYM:
+ if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
+ return NULL;
+ SYMBOL_NAME (sym) = obsavestring (name, pp-name);
+ SYMBOL_CLASS (sym) = LOC_ARG;
+ pp += 2;
+ SYMBOL_TYPE (sym) = read_type (&pp);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list (sym2, &local_symbols);
+ break;
+
+ case C_STSYM:
+ if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
+ return NULL;
+ SYMBOL_NAME (sym) = obsavestring (name, pp-name);
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_VALUE (sym) += static_block_base;
+ pp += 2;
+ SYMBOL_TYPE (sym) = read_type (&pp);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list
+ (sym2, within_function ? &local_symbols : &file_symbols);
+ break;
+
+ case C_LSYM:
+ if (*name == ':' || (pp = (char *) index (name, ':')) == NULL)
+ return NULL;
+ SYMBOL_NAME (sym) = obsavestring (name, pp-name);
+ SYMBOL_CLASS (sym) = LOC_LOCAL;
+ pp += 1;
+ SYMBOL_TYPE (sym) = read_type (&pp);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list (sym2, &local_symbols);
+ break;
+
+ case C_AUTO:
+ SYMBOL_CLASS (sym) = LOC_LOCAL;
+ SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list (sym2, &local_symbols);
+ break;
+
+ case C_EXT:
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list (sym2, &global_symbols);
+ break;
+
+ case C_STAT:
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list
+ (sym2, within_function ? &local_symbols : &file_symbols);
+ break;
+
+ case C_REG:
+ printf ("ERROR! C_REG is not fully implemented!\n");
+ SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced);
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list (sym2, &local_symbols);
+ break;
+
+ case C_RSYM:
+ pp = (char*) index (name, ':');
+ SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (cs->c_value);
+ if (pp) {
+ SYMBOL_NAME (sym) = obsavestring (name, pp-name);
+ pp += 2;
+ if (*pp)
+ SYMBOL_TYPE (sym) = read_type (&pp);
+ }
+ else
+ /* else this is not a stab entry, suppose the type is either
+ `int' or `float', depending on the register class. */
+
+ SYMBOL_TYPE (sym) = (SYMBOL_VALUE (sym) < 32) ?
+ builtin_type_int : builtin_type_float;
+
+ SYMBOL_DUP (sym, sym2);
+ add_symbol_to_list (sym2, &local_symbols);
+ break;
+
+ default :
+ printf ("ERROR: Unexpected storage class: %d.\n", cs->c_sclass);
+ return NULL;
+ }
+ }
+ return sym2;
+}
+
+
+static int
+read_symbol_nvalue (symtable, symno)
+ char *symtable;
+ int symno;
+{
+ struct internal_syment symbol[1];
+
+ bfd_coff_swap_sym_in (symfile_bfd, symtable + (symno*local_symesz), symbol);
+ return symbol->n_value;
+}
+
+
+static int
+read_symbol_lineno (symtable, symno)
+ char *symtable;
+ int symno;
+{
+ struct internal_syment symbol[1];
+ union internal_auxent main_aux[1];
+
+ int ii;
+
+ for (ii = 0; ii < 50; ii++) {
+ bfd_coff_swap_sym_in (symfile_bfd,
+ symtable + (symno*local_symesz), symbol);
+ if (symbol->n_sclass == C_FCN && 0 == strcmp (symbol->n_name, ".bf"))
+ goto gotit;
+ symno += 1 + symbol->n_numaux+1;
+ }
+
+ printf ("GDB Error: `.bf' not found.\n");
+ return 0;
+
+gotit:
+ /* take aux entry and return its lineno */
+ symno++;
+ bfd_coff_swap_aux_in (symfile_bfd, symtable+(symno*local_symesz),
+ symbol->n_type, symbol->n_sclass, main_aux);
+
+ return main_aux->x_sym.x_misc.x_lnsz.x_lnno;
+}
+
+/* Support for line number handling */
+
+/* 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.
+ */
+static void
+find_linenos(abfd, asect, vpinfo)
+bfd *abfd;
+sec_ptr asect;
+void *vpinfo;
+{
+ struct coff_symfile_info *info;
+ int size, count;
+ file_ptr offset, maxoff;
+
+ count = asect->lineno_count;
+
+ if (count == 0)
+ return;
+
+ size = count * coff_data (symfile_bfd)->local_linesz;
+ info = (struct coff_symfile_info *)vpinfo;
+ offset = asect->line_filepos;
+ maxoff = offset + size;
+
+ if (offset < info->min_lineno_offset || info->min_lineno_offset == 0)
+ info->min_lineno_offset = offset;
+
+ if (maxoff > info->max_lineno_offset)
+ info->max_lineno_offset = maxoff;
+}
+
+
+/* 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_lineno (abfd, offset, size)
+ bfd *abfd;
+ long offset;
+ int size;
+{
+ int val;
+
+ if (bfd_seek(abfd, offset, 0) < 0)
+ return -1;
+
+ linetab = (char *) xmalloc(size);
+
+ val = bfd_read(linetab, 1, size, abfd);
+ if (val != size)
+ return -1;
+
+ linetab_offset = offset;
+ linetab_size = size;
+ make_cleanup(free, linetab); /* Be sure it gets de-allocated. */
+ return 0;
+}
+
+
+void
+dump_strtbl ()
+{
+ int ii;
+ printf ("===STRING TABLE DUMP...\n\n");
+ for ( ii=0; ii < strtbl_len; ++ii )
+ printf ("%c", isprint (*(strtbl+ii)) ? *(strtbl+ii) : ' ');
+ printf ("\n");
+}
+
+void
+dump_linetable (ltb)
+ struct linetable *ltb;
+{
+ int ii;
+ for (ii=0; ii < ltb->nitems; ++ii)
+ printf ("line: %d, addr: 0x%x\n", ltb->item[ii].line, ltb->item[ii].pc);
+}
+
+void
+dump_type (typeP)
+ struct type *typeP;
+{
+ printf ("0x%x: name: %s\n", typeP, typeP->name ? typeP->name : "(nil)");
+}
+
+char *dump_namespace ();
+char *dump_addrclass ();
+
+void
+dump_symbol (pp)
+ struct symbol *pp;
+{
+ printf (" sym: %s\t%s,\t%s\ttype: 0x%x, val: 0x%x end: 0x%x\n",
+ pp->name, dump_namespace (pp->namespace),
+ dump_addrclass (pp->class), pp->type,
+ SYMBOL_CLASS(pp) == LOC_BLOCK ? BLOCK_START(SYMBOL_BLOCK_VALUE(pp))
+ : pp->value.value,
+ SYMBOL_CLASS(pp) == LOC_BLOCK ? BLOCK_END(SYMBOL_BLOCK_VALUE(pp)) : 0);
+}
+
+
+char *
+dump_namespace (ns)
+int ns;
+{
+ static char *ns_name [] = {
+ "UNDEF_NS", "VAR_NS", "STRUCT_NS", "LABEL_NS"};
+
+ switch (ns) {
+ case UNDEF_NAMESPACE:
+ case VAR_NAMESPACE:
+ case STRUCT_NAMESPACE:
+ case LABEL_NAMESPACE:
+ return ns_name[ns];
+ }
+
+ return "***ERROR***";
+}
+
+
+char *
+dump_addrclass (ac)
+int ac; /* address class */
+{
+ static char *ac_name [] = {
+ "LOC_UNDEF",
+ "LOC_CONST",
+ "LOC_STATIC",
+ "LOC_REGISTER",
+ "LOC_ARG",
+ "LOC_REF_ARG",
+ "LOC_REGPARM",
+ "LOC_LOCAL",
+ "LOC_TYPEDEF",
+ "LOC_LABEL",
+ "LOC_BLOCK",
+ "LOC_CONST_BYTES",
+ "LOC_LOCAL_ARG",
+ };
+ switch (ac) {
+ case LOC_UNDEF:
+ case LOC_CONST:
+ case LOC_STATIC:
+ case LOC_REGISTER:
+ case LOC_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM:
+ case LOC_LOCAL:
+ case LOC_TYPEDEF:
+ case LOC_LABEL:
+ case LOC_BLOCK:
+ case LOC_CONST_BYTES:
+ case LOC_LOCAL_ARG:
+ return ac_name [ac];
+ }
+ return "***ERROR***";
+}
+
+void
+dump_block (pp)
+ struct block *pp;
+{
+ int ii;
+ printf ("BLOCK..: start: 0x%x, end: 0x%x\n", pp->startaddr, pp->endaddr);
+ for (ii=0; ii < pp->nsyms; ++ii)
+ dump_symbol (pp->sym[ii]);
+}
+
+void
+dump_blockvector (pp)
+ struct blockvector *pp;
+{
+ int ii;
+ for (ii=0; ii < pp->nblocks; ++ii)
+ dump_block (pp->block [ii]);
+}
+
+
+void
+dump_last_symtab (pp)
+ struct symtab *pp;
+{
+ for ( ; pp; pp = pp->next) {
+ if ( pp->next == 0 ) {
+ printf ("SYMTAB NAME: %s\n", pp->filename);
+ dump_blockvector (pp->blockvector);
+ }
+ }
+}
+
+void
+dump_symtabs (pp)
+ struct symtab *pp;
+{
+ for ( ; pp; pp = pp->next) {
+ printf ("SYMTAB NAME: %s\n", pp->filename ? pp->filename : "(nil)");
+/* if (pp->linetable)
+ dump_linetable (pp->linetable); */
+ dump_blockvector (pp->blockvector);
+ }
+}
+
+void
+dump_symtab_lines (pp)
+ struct symtab *pp;
+{
+ for ( ; pp; pp = pp->next) {
+ printf ("SYMTAB NAME: %s\n", pp->filename ? pp->filename : "(nil)");
+ if (pp->linetable)
+ dump_linetable (pp->linetable);
+ /* dump_blockvector (pp->blockvector); */
+ }
+}
+
+void
+dump_misc_funcs ()
+{
+ int ii;
+ for (ii=0; ii < misc_function_count; ++ii)
+ printf ("name: %s, addr: 0x%x\n",
+ misc_function_vector[ii].name,
+ misc_function_vector[ii].address);
+}
+
+
+/* dbx allows the text of a symbol name to be continued into the
+ next symbol name! When such a continuation is encountered
+ (a \ at the end of the text of a name)
+ call this function to get the continuation. */
+/* So far, I haven't seen this happenning xlc output. I doubt we'll need this
+ for aixcoff. */
+
+#define next_symbol_text() \
+ printf ("Gdb Error: symbol names on multiple lines not implemented.\n")
+
+
+/* xlc/dbx combination uses a set of builtin types, starting from -1. return
+ the proper type node fora given builtin type #. */
+
+struct type *
+builtin_type (pp)
+char **pp;
+{
+ int typenums[2];
+
+ if (**pp != '-') {
+ printf ("ERROR!, unknown built-in type!\n");
+ return NULL;
+ }
+ *pp += 1;
+ read_type_number (pp, typenums);
+
+ /* default types are defined in dbxstclass.h. */
+ switch ( typenums[1] ) {
+ case 1:
+ return builtin_type_int;
+ case 2:
+ return builtin_type_char;
+ case 3:
+ return builtin_type_short;
+ case 4:
+ return builtin_type_long;
+ case 5:
+ return builtin_type_unsigned_char;
+ case 6:
+ return builtin_type_char; /* requires a builtin `signed char' */
+ case 7:
+ return builtin_type_unsigned_short;
+ case 8:
+ return builtin_type_unsigned_int;
+ case 9:
+ return builtin_type_unsigned_int;
+ case 10:
+ return builtin_type_unsigned_long;
+ case 11:
+ return builtin_type_void;
+ case 12:
+ return builtin_type_float;
+ case 13:
+ return builtin_type_double;
+ case 14:
+ return builtin_type_double; /* requires a builtin `long double' */
+ case 15:
+ return builtin_type_int; /* requires a builtin `integer' */
+ case 16:
+ return builtin_type_int; /* requires builtin `boolean' */
+ case 17:
+ return builtin_type_float; /* requires builtin `short real' */
+ case 18:
+ return builtin_type_float; /* requires builtin `real' */
+ default :
+ printf ("ERROR! Unknown builtin type -%d\n", typenums[1]);
+ return NULL;
+ }
+}
+
+/* if we now nothing about a function but its address, make a function symbol
+ out of it with the limited knowladge you have. This will be used when
+ somebody refers to a function, which doesn't exist in the symbol table,
+ but in misc_function_vector. */
+
+struct symbol *
+build_function_symbol (ind)
+ int ind;
+{
+ struct symbol *sym =
+ (struct symbol *) obstack_alloc (symbol_obstack, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = misc_function_vector[ind].name;
+ /* SYMBOL_VALUE (sym) = misc_function_vector[ind].address; */
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+ SYMBOL_TYPE (sym) = lookup_function_type (builtin_type_int);
+ SYMBOL_BLOCK_VALUE (sym) = (struct block *)
+ obstack_alloc (symbol_obstack, sizeof (struct block));
+ BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) = misc_function_vector[ind].address;
+ return sym;
+}
+
+
+void
+aixcoff_new_init ()
+{
+ /* Nothin' to do. */
+}
+
+void
+aixcoff_symfile_init (sf)
+struct sym_fns *sf;
+{
+ bfd *abfd = sf->sym_bfd;
+
+ /* Allocate struct to keep track of the symfile */
+ /* FIXME memory leak */
+ sf->sym_private = xmalloc(sizeof (struct coff_symfile_info));
+
+ /*
+ * Save startup file's range of PC addresses to help
+ * blockframe.c decide where the bottom of the stack is.
+ */
+ if (bfd_get_file_flags(abfd) & EXEC_P) {
+ entry_point = bfd_get_start_address(abfd);
+ } else {
+ entry_point = ~0;
+ /* set the startup file to be an empty range. */
+ startup_file_start = 0;
+ startup_file_end = 0;
+ }
+}
+
+
+static int
+init_stringtab(abfd, offset)
+ bfd *abfd;
+ long offset;
+{
+ long length;
+ int val;
+ unsigned char lengthbuf[4];
+
+ if (bfd_seek(abfd, offset, 0) < 0)
+ return -1;
+
+ val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd);
+ length = bfd_h_get_32(abfd, lengthbuf);
+
+ /* If no string table is needed, then the file may end immediately
+ after the symbols. Just return with `strtbl' set to null. */
+
+ if (val != sizeof length || length < sizeof length)
+ return 0;
+
+ /* Allocate string table from symbol_obstack. We will need this table
+ as long as we have its symbol table around. */
+
+ strtbl = (char*) obstack_alloc (symbol_obstack, length);
+ if (strtbl == NULL)
+ return -1;
+
+ bcopy(&length, strtbl, sizeof length);
+ if (length == sizeof length)
+ return 0;
+
+ val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd);
+
+ if (val != length - sizeof length || strtbl[length - 1] != '\0')
+ return -1;
+
+ return 0;
+}
+
+static int
+init_debugsection(abfd)
+ bfd *abfd;
+{
+ register sec_ptr secp;
+ bfd_size_type length;
+
+ if (debugsec) {
+ free(debugsec);
+ debugsec = NULL;
+ }
+
+ secp = bfd_get_section_by_name(abfd, ".debug");
+ if (!secp)
+ return 0;
+
+ if (!(length = bfd_section_size(abfd, secp)))
+ return 0;
+
+ debugsec = (void *) xmalloc ((unsigned)length);
+ if (debugsec == NULL)
+ return -1;
+
+ if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) {
+ printf ("Can't read .debug section from symbol file\n");
+ return -1;
+ }
+ return 0;
+}
+
+static void
+free_debugsection()
+{
+ if (debugsec)
+ free(debugsec);
+ debugsec = NULL;
+}
+
+
+/* aixcoff version of symbol file read. */
+
+void
+aixcoff_symfile_read (sf, addr, mainline)
+ struct sym_fns *sf;
+ CORE_ADDR addr;
+ int mainline;
+{
+ int num_symbols; /* # of symbols */
+ int symtab_offset; /* symbol table and */
+ int stringtab_offset; /* string table file offsets */
+ int val;
+ bfd *abfd;
+ struct coff_symfile_info *info = (void*) sf->sym_private;
+ char *name;
+
+ symfile_bfd = abfd = sf->objfile->obfd;
+ name = sf->objfile->name;
+
+ num_symbols = bfd_get_symcount (abfd); /* # of symbols */
+ symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */
+ stringtab_offset = symtab_offset +
+ num_symbols * coff_data(abfd)->local_symesz;
+
+ info->min_lineno_offset = 0;
+ info->max_lineno_offset = 0;
+ bfd_map_over_sections (abfd, find_linenos, info);
+
+ /* FIXME! This stuff should move into symfile_init */
+ if (info->min_lineno_offset != 0
+ && info->max_lineno_offset > info->min_lineno_offset) {
+
+ /* only read in the line # table if one exists */
+ val = init_lineno(abfd, info->min_lineno_offset,
+ info->max_lineno_offset - info->min_lineno_offset);
+
+ if (val < 0)
+ error("\"%s\": error reading line numbers\n", name);
+ }
+
+ val = init_stringtab(abfd, stringtab_offset);
+ if (val < 0) {
+ error ("\"%s\": can't get string table", name);
+ }
+
+ if (init_debugsection(abfd) < 0) {
+ error ("Error reading .debug section of `%s'\n", name);
+ }
+
+ /* Position to read the symbol table. Do not read it all at once. */
+ val = bfd_seek(abfd, (long)symtab_offset, 0);
+ if (val < 0)
+ perror_with_name(name);
+
+ if (bfd_tell(abfd) != symtab_offset)
+ fatal("bfd? BFD!");
+
+ init_misc_bunches ();
+ make_cleanup(discard_misc_bunches, 0);
+
+#ifdef XCOFF_INIT_LOADINFO
+ if (mainline)
+ XCOFF_INIT_LOADINFO ();
+#endif
+
+ /* Now that the executable file is positioned at symbol table,
+ process it and define symbols accordingly. */
+
+ read_xcoff_symtab(sf->objfile, num_symbols);
+
+ make_cleanup(free_debugsection, 0);
+
+ /* Sort symbols alphabetically within each block. */
+ sort_syms ();
+
+ /* Go over the misc functions and install them in vector. */
+ condense_misc_bunches (!mainline);
+
+ /* Make a default for file to list. */
+ select_source_symtab (0);
+}
+
+/* Register our ability to parse symbols for aixcoff BFD files. */
+
+static struct sym_fns aixcoff_sym_fns =
+{
+ "aixcoff-rs6000", 15,
+ aixcoff_new_init, aixcoff_symfile_init,
+ aixcoff_symfile_read,
+};
+
+void
+_initialize_xcoffread ()
+{
+ add_symtab_fns(&aixcoff_sym_fns);
+}