/* Read AIX xcoff symbol tables and convert to internal format, for GDB.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
+ Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 1997
Free Software Foundation, Inc.
Derived from coffread.c, dbxread.c, and a lot of hacking.
Contributed by IBM Corporation.
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-/* RS/6000 and PowerPC only:
- Needs xcoff_add_toc_to_loadinfo and xcoff_init_loadinfo in
- rs6000-tdep.c from target.
- However, if you define FAKING_RS6000, then this code will link with
- any target. */
-
#include "defs.h"
#include "bfd.h"
/* Number of symbols in symtbl. */
int symtbl_num_syms;
+
+ /* Offset in data section to TOC anchor. */
+ CORE_ADDR toc_offset;
};
static struct complaint storclass_complaint =
static struct complaint eb_complaint =
{"Mismatched .eb symbol ignored starting at symnum %d", 0, 0};
+static void
+xcoff_initial_scan PARAMS ((struct objfile *, struct section_offsets *, int));
+
+static void
+scan_xcoff_symtab PARAMS ((struct section_offsets *, struct objfile *));
+
+static char *
+xcoff_next_symbol_text PARAMS ((struct objfile *));
+
+static void
+record_include_begin PARAMS ((struct coff_symbol *));
+
static void
enter_line_range PARAMS ((struct subfile *, unsigned, unsigned,
CORE_ADDR, CORE_ADDR, unsigned *));
static void
read_xcoff_symtab PARAMS ((struct partial_symtab *));
+#if 0
static void
add_stab_to_list PARAMS ((char *, struct pending_stabs **));
+#endif
+
+static int
+compare_lte PARAMS ((const void *, const void *));
+
+static struct linetable *
+arrange_linetable PARAMS ((struct linetable *));
+
+static void
+record_include_end PARAMS ((struct coff_symbol *));
+
+static void
+process_linenos PARAMS ((CORE_ADDR, CORE_ADDR));
\f
/* Translate from a COFF section number (target_index) to a SECT_OFF_*
code. */
static int secnum_to_section PARAMS ((int, struct objfile *));
+static asection * secnum_to_bfd_section PARAMS ((int, struct objfile *));
struct find_targ_sec_arg {
int targ_index;
int *resultp;
+ asection **bfd_sect;
};
static void find_targ_sec PARAMS ((bfd *, asection *, void *));
*args->resultp = SECT_OFF_DATA;
else
*args->resultp = SECT_OFF_BSS;
+ *args->bfd_sect = sect;
}
}
struct objfile *objfile;
{
int off = SECT_OFF_TEXT;
+ asection *sect = NULL;
struct find_targ_sec_arg args;
args.targ_index = secnum;
args.resultp = &off;
+ args.bfd_sect = §
bfd_map_over_sections (objfile->obfd, find_targ_sec, &args);
return off;
}
+
+/* Return the BFD section that CS points to. */
+static asection *
+secnum_to_bfd_section (secnum, objfile)
+ int secnum;
+ struct objfile *objfile;
+{
+ int off = SECT_OFF_TEXT;
+ asection *sect = NULL;
+ struct find_targ_sec_arg args;
+ args.targ_index = secnum;
+ args.resultp = &off;
+ args.bfd_sect = §
+ bfd_map_over_sections (objfile->obfd, find_targ_sec, &args);
+ return sect;
+}
\f
/* add a given stab string into given stab vector. */
+#if 0
+
static void
add_stab_to_list (stabname, stabvector)
char *stabname;
}
(*stabvector)->stab [(*stabvector)->count++] = stabname;
}
+
+#endif
+
\f
/* Linenos are processed on a file-by-file basis.
/* compare line table entry addresses. */
static int
-compare_lte (lte1, lte2)
- struct linetable_entry *lte1, *lte2;
+compare_lte (lte1p, lte2p)
+ const void *lte1p;
+ const void *lte2p;
{
+ struct linetable_entry *lte1 = (struct linetable_entry *) lte1p;
+ struct linetable_entry *lte2 = (struct linetable_entry *) lte2p;
return lte1->pc - lte2->pc;
}
-/* Give a line table with function entries are marked, arrange its functions
- in assending order and strip off function entry markers and return it in
+/* Given a line table with function entries are marked, arrange its functions
+ in ascending order and strip off function entry markers and return it in
a newly created table. If the old one is good enough, return the old one. */
/* FIXME: I think all this stuff can be replaced by just passing
sort_linevec = 1 to end_symtab. */
namestr = (NAME); \
if (namestr[0] == '.') ++namestr; \
prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \
- (char *)NULL, (SECTION), (OBJFILE)); \
+ (char *)NULL, (SECTION), (asection *)NULL, (OBJFILE)); \
misc_func_recorded = 1; \
}
/* This is the function which stabsread.c calls to get symbol
continuations. */
+
static char *
-xcoff_next_symbol_text ()
+xcoff_next_symbol_text (objfile)
+ struct objfile *objfile;
{
struct internal_syment symbol;
static struct complaint msg =
{"Unexpected symbol continuation", 0, 0};
char *retval;
- struct objfile *objfile = this_symtab_psymtab->objfile;
+ /* FIXME: is this the same as the passed arg? */
+ objfile = this_symtab_psymtab->objfile;
bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol);
if (symbol.n_zeroes)
start_stabs ();
start_symtab (filestring, (char *)NULL, file_start_addr);
+ record_debugformat ("XCOFF");
symnum = ((struct symloc *)pst->read_symtab_private)->first_symnum;
max_symnum =
symnum + ((struct symloc *)pst->read_symtab_private)->numsyms;
if (last_source_file)
{
pst->symtab =
- end_symtab (cur_src_end_addr, 1, 0, objfile, SECT_OFF_TEXT);
+ end_symtab (cur_src_end_addr, objfile, SECT_OFF_TEXT);
end_stabs ();
}
start_stabs ();
start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0);
+ record_debugformat ("XCOFF");
cur_src_end_addr = first_object_file_end;
/* done with all files, everything from here on is globals */
}
{
complete_symtab (filestring, file_start_addr);
cur_src_end_addr = file_end_addr;
- end_symtab (file_end_addr, 1, 0, objfile,
- SECT_OFF_TEXT);
+ end_symtab (file_end_addr, objfile, SECT_OFF_TEXT);
end_stabs ();
start_stabs ();
/* Give all csects for this source file the same
name. */
start_symtab (filestring, NULL, (CORE_ADDR)0);
+ record_debugformat ("XCOFF");
}
/* If this is the very first csect seen,
complete_symtab (filestring, file_start_addr);
cur_src_end_addr = file_end_addr;
- end_symtab (file_end_addr, 1, 0, objfile, SECT_OFF_TEXT);
+ end_symtab (file_end_addr, objfile, SECT_OFF_TEXT);
end_stabs ();
/* XCOFF, according to the AIX 3.2 documentation, puts the filename
start_stabs ();
start_symtab (filestring, (char *)NULL, (CORE_ADDR)0);
+ record_debugformat ("XCOFF");
last_csect_name = 0;
/* reset file start and end addresses. A compilation unit with no text
complete_symtab (filestring, file_start_addr);
cur_src_end_addr = file_end_addr;
- s = end_symtab (file_end_addr, 1, 0, objfile, SECT_OFF_TEXT);
+ s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT);
/* When reading symbols for the last C_FILE of the objfile, try
to make sure that we set pst->symtab to the symtab for the
file, not to the _globals_ symtab. I'm not sure whether this
#define SYMNAME_ALLOC(NAME, ALLOCED) \
- (ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME));
+ (ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), &objfile->symbol_obstack);
static struct type *func_symbol_type;
return sym2;
}
-/* Extract the file name from the aux entry of a C_FILE symbol. Return
- only the last component of the name. Result is in static storage and
- is only good for temporary use. */
+/* Extract the file name from the aux entry of a C_FILE symbol.
+ Result is in static storage and is only good for temporary use. */
static char *
coff_getfilename (aux_entry, objfile)
struct objfile *objfile;
{
static char buffer[BUFSIZ];
- register char *temp;
- char *result;
if (aux_entry->x_file.x_n.x_zeroes == 0)
strcpy (buffer,
strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN);
buffer[FILNMLEN] = '\0';
}
- result = buffer;
-
- /* FIXME: We should not be throwing away the information about what
- directory. It should go into dirname of the symtab, or some such
- place. */
- if ((temp = strrchr (result, '/')) != NULL)
- result = temp + 1;
- return (result);
+ return (buffer);
}
/* Set *SYMBOL to symbol number symno in symtbl. */
/* Allocate struct to keep track of the symfile */
objfile -> sym_private = xmmalloc (objfile -> md,
sizeof (struct coff_symfile_info));
+
+ /* XCOFF 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;
+
init_entry_point_info (objfile);
}
((struct coff_symfile_info *)objfile->sym_private)->strtbl = NULL;
- if (bfd_seek (abfd, offset, L_SET) < 0)
+ if (bfd_seek (abfd, offset, SEEK_SET) < 0)
error ("cannot seek to string table in %s: %s",
bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
static struct partial_symtab *xcoff_start_psymtab
PARAMS ((struct objfile *, struct section_offsets *, char *, int,
- struct partial_symbol *, struct partial_symbol *));
+ struct partial_symbol **, struct partial_symbol **));
/* Allocate and partially fill a partial symtab. It will be
completely filled at the end of the symbol list.
struct section_offsets *section_offsets;
char *filename;
int first_symnum;
- struct partial_symbol *global_syms;
- struct partial_symbol *static_syms;
+ struct partial_symbol **global_syms;
+ struct partial_symbol **static_syms;
{
struct partial_symtab *result =
start_psymtab_common (objfile, section_offsets,
static struct partial_symtab *xcoff_end_psymtab
PARAMS ((struct partial_symtab *, char **, int, int,
- struct partial_symtab **, int));
+ struct partial_symtab **, int, int));
/* Close off the current usage of PST.
Returns PST, or NULL if the partial symtab was empty and thrown away.
static struct partial_symtab *
xcoff_end_psymtab (pst, include_list, num_includes, capping_symbol_number,
- dependency_list, number_dependencies)
+ dependency_list, number_dependencies, textlow_not_set)
struct partial_symtab *pst;
char **include_list;
int num_includes;
int capping_symbol_number;
struct partial_symtab **dependency_list;
int number_dependencies;
+ int textlow_not_set;
{
int i;
struct objfile *objfile = pst -> objfile;
it is on the obstack, but we can forget to chain it on the list. */
/* Empty psymtabs happen as a result of header files which don't have
any symbols in them. There can be a lot of them. */
- struct partial_symtab *prev_pst;
-
- /* First, snip it out of the psymtab chain */
- if (pst->objfile->psymtabs == pst)
- pst->objfile->psymtabs = pst->next;
- else
- for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next)
- if (prev_pst->next == pst)
- prev_pst->next = pst->next;
-
- /* Next, put it on a free list for recycling */
-
- pst->next = pst->objfile->free_psymtabs;
- pst->objfile->free_psymtabs = pst;
+ discard_psymtab (pst);
/* Indicate that psymtab was thrown away. */
pst = (struct partial_symtab *)NULL;
struct section_offsets *section_offsets;
struct objfile *objfile;
{
- int toc_offset = 0; /* toc offset value in data section. */
+ CORE_ADDR toc_offset = 0; /* toc offset value in data section. */
char *filestring = NULL;
char *namestring;
int past_first_source_file = 0;
bfd *abfd;
+ asection *bfd_sect;
unsigned int nsyms;
/* Current partial symtab */
CORE_ADDR last_csect_val = 0;
int last_csect_sec = 0;
int misc_func_recorded = 0; /* true if any misc. function */
+ int textlow_not_set = 1;
pst = (struct partial_symtab *) 0;
each program csect, because their text
sections need not be adjacent. */
xcoff_end_psymtab
- (pst, psymtab_include_list,
- includes_used,
- symnum_before,
- dependency_list, dependencies_used);
+ (pst, psymtab_include_list, includes_used,
+ symnum_before, dependency_list,
+ dependencies_used, textlow_not_set);
includes_used = 0;
dependencies_used = 0;
/* Give all psymtabs for this source file the same
(namestring, symbol.n_value,
sclass == C_HIDEXT ? mst_file_data : mst_data,
NULL, secnum_to_section (symbol.n_scnum, objfile),
- objfile);
+ NULL, objfile);
break;
case XMC_TC0:
if (toc_offset)
warning ("More than one XMC_TC0 symbol found.");
toc_offset = symbol.n_value;
+
+ /* Make TOC offset relative to start address of section. */
+ bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile);
+ if (bfd_sect)
+ toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect);
break;
case XMC_TC:
(namestring, symbol.n_value,
sclass == C_HIDEXT ? mst_file_data : mst_data,
NULL, secnum_to_section (symbol.n_scnum, objfile),
- objfile);
+ NULL, objfile);
break;
}
break;
(namestring, symbol.n_value,
sclass == C_HIDEXT ? mst_file_bss : mst_bss,
NULL, secnum_to_section (symbol.n_scnum, objfile),
- objfile);
+ NULL, objfile);
break;
}
break;
if (pst)
{
xcoff_end_psymtab (pst, psymtab_include_list, includes_used,
- symnum_before,
- dependency_list, dependencies_used);
+ symnum_before, dependency_list,
+ dependencies_used, textlow_not_set);
includes_used = 0;
dependencies_used = 0;
}
called from DBXREAD_ONLY or N_SO code. Likewise for the symnum
variable. */
#define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms) 0
-#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\
+#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\
do {} while (0)
/* We have already set the namestring. */
#define SET_NAMESTRING() /* */
if (pst)
{
xcoff_end_psymtab (pst, psymtab_include_list, includes_used,
- ssymnum,
- dependency_list, dependencies_used);
+ ssymnum, dependency_list,
+ dependencies_used, textlow_not_set);
}
- /* Record the toc offset value of this symbol table into ldinfo structure.
+ /* Record the toc offset value of this symbol table into objfile structure.
If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain
this information would be file auxiliary header. */
-#ifndef FAKING_RS6000
- xcoff_add_toc_to_loadinfo (toc_offset);
-#endif
+ ((struct coff_symfile_info *) objfile->sym_private)->toc_offset = toc_offset;
+}
+
+/* Return the toc offset value for a given objfile. */
+
+CORE_ADDR
+get_toc_offset (objfile)
+ struct objfile *objfile;
+{
+ if (objfile)
+ return ((struct coff_symfile_info *) objfile->sym_private)->toc_offset;
+ return 0;
}
/* Scan and build partial symbols for a symbol file.
char *name;
unsigned int size;
-#ifndef FAKING_RS6000
- /* Initialize load info structure. */
- if (mainline)
- xcoff_init_loadinfo ();
-#endif
-
info = (struct coff_symfile_info *) objfile -> sym_private;
symfile_bfd = abfd = objfile->obfd;
name = objfile->name;
/* Read the symbols. We keep them in core because we will want to
access them randomly in read_symbol*. */
- val = bfd_seek (abfd, symtab_offset, L_SET);
+ val = bfd_seek (abfd, symtab_offset, SEEK_SET);
if (val < 0)
error ("Error reading symbols from %s: %s",
name, bfd_errmsg (bfd_get_error ()));
include N_SLINE. */
init_psymbol_list (objfile, num_symbols);
- pending_blocks = 0;
+ free_pending_blocks ();
back_to = make_cleanup (really_free_pendings, 0);
init_minimal_symbol_collection ();
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