/* Read ELF (Executable and Linking Format) object files for GDB.
- Copyright 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
This file is part of GDB.
static struct section_offsets *
elf_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
-static void
+static struct minimal_symbol *
record_minimal_symbol_and_info PARAMS ((char *, CORE_ADDR,
enum minimal_symbol_type, char *,
struct objfile *));
#endif
-static void
+static struct minimal_symbol *
record_minimal_symbol_and_info (name, address, ms_type, info, objfile)
char *name;
CORE_ADDR address;
}
name = obsavestring (name, strlen (name), &objfile -> symbol_obstack);
- prim_record_minimal_symbol_and_info (name, address, ms_type, info, section,
- objfile);
+ return prim_record_minimal_symbol_and_info
+ (name, address, ms_type, info, section, objfile);
}
/*
SYNOPSIS
void elf_symtab_read (bfd *abfd, CORE_ADDR addr,
- struct objfile *objfile)
+ struct objfile *objfile, int dynamic)
DESCRIPTION
/* If filesym is nonzero, it points to a file symbol, but we haven't
seen any section info for it yet. */
asymbol *filesym = 0;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Name of filesym, as saved on the symbol_obstack. */
+ char *filesymname = obsavestring ("", 0, &objfile->symbol_obstack);
+#endif
struct dbx_symfile_info *dbx = (struct dbx_symfile_info *)
objfile->sym_stab_info;
unsigned long size;
int stripped = (bfd_get_symcount (abfd) == 0);
if (dynamic)
- storage_needed = bfd_get_dynamic_symtab_upper_bound (abfd);
+ {
+ storage_needed = bfd_get_dynamic_symtab_upper_bound (abfd);
+
+ /* Nothing to be done if there is no dynamic symtab. */
+ if (storage_needed < 0)
+ return;
+ }
else
- storage_needed = bfd_get_symtab_upper_bound (abfd);
- if (storage_needed < 0)
- error ("Can't read symbols from %s: %s", bfd_get_filename (abfd),
- bfd_errmsg (bfd_get_error ()));
+ {
+ storage_needed = bfd_get_symtab_upper_bound (abfd);
+ if (storage_needed < 0)
+ error ("Can't read symbols from %s: %s", bfd_get_filename (abfd),
+ bfd_errmsg (bfd_get_error ()));
+ }
if (storage_needed > 0)
{
symbol_table = (asymbol **) xmalloc (storage_needed);
continue;
}
+ if (dynamic
+ && sym -> section == &bfd_und_section
+ && (sym -> flags & BSF_FUNCTION))
+ {
+ struct minimal_symbol *msym;
+
+ /* Symbol is a reference to a function defined in
+ a shared library.
+ If its value is non zero then it is usually the address
+ of the corresponding entry in the procedure linkage table,
+ relative to the base address.
+ If its value is zero then the dynamic linker has to resolve
+ the symbol. We are unable to find any meaningful address
+ for this symbol in the executable file, so we skip it. */
+ symaddr = sym -> value;
+ if (symaddr == 0)
+ continue;
+ symaddr += addr;
+ msym = record_minimal_symbol_and_info
+ ((char *) sym -> name, symaddr,
+ mst_solib_trampoline, NULL, objfile);
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ msym->filename = filesymname;
+#endif
+ continue;
+ }
+
/* If it is a nonstripped executable, do not enter dynamic
symbols, as the dynamic symbol table is usually a subset
- of the main symbol table.
- On Irix 5 however, the symbols for the procedure linkage
- table entries have meaningful values only in the dynamic
- symbol table, so we always examine undefined symbols. */
- if (dynamic && !stripped && sym -> section != &bfd_und_section)
+ of the main symbol table. */
+ if (dynamic && !stripped)
continue;
if (sym -> flags & BSF_FILE)
{
sectinfo = NULL;
}
filesym = sym;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ filesymname =
+ obsavestring ((char *)filesym->name, strlen (filesym->name),
+ &objfile->symbol_obstack);
+#endif
}
else if (sym -> flags & (BSF_GLOBAL | BSF_LOCAL | BSF_WEAK))
{
+ struct minimal_symbol *msym;
+
/* Select global/local/weak symbols. Note that bfd puts abs
symbols in their own section, so all symbols we are
interested in will have a section. */
/* For non-absolute symbols, use the type of the section
they are relative to, to intuit text/data. Bfd provides
no way of figuring this out for absolute symbols. */
- if (sym -> section == &bfd_und_section
- && (sym -> flags & BSF_GLOBAL)
- && (sym -> flags & BSF_FUNCTION))
- {
- /* Symbol is a reference to a function defined in
- a shared library.
- If its value is non zero then it is usually the
- absolute address of the corresponding entry in
- the procedure linkage table.
- If its value is zero then the dynamic linker has to
- resolve the symbol. We are unable to find any
- meaningful address for this symbol in the
- executable file, so we skip it.
- Irix 5 has a zero value for all shared library functions
- in the main symbol table, but the dynamic symbol table
- provides the right values. */
- ms_type = mst_solib_trampoline;
- symaddr = sym -> value;
- if (symaddr == 0)
- continue;
- symaddr += addr;
- }
- else if (sym -> section == &bfd_abs_section)
+ if (sym -> section == &bfd_abs_section)
{
/* This is a hack to get the minimal symbol type
right for Irix 5, which has absolute adresses
{
ms_type = mst_text;
}
- else if (sym->name[0] == '.' && sym->name[1] == 'L')
+ else if ((sym->name[0] == '.' && sym->name[1] == 'L')
+ || ((sym -> flags & BSF_LOCAL)
+ && sym->name[0] == '$'
+ && sym->name[1] == 'L'))
/* Looks like a compiler-generated label. Skip it.
The assembler should be skipping these (to keep
executables small), but apparently with gcc on the
}
/* Pass symbol size field in via BFD. FIXME!!! */
size = ((elf_symbol_type *) sym) -> internal_elf_sym.st_size;
- record_minimal_symbol_and_info ((char *) sym -> name, symaddr,
- ms_type, (PTR) size, objfile);
+ msym = record_minimal_symbol_and_info
+ ((char *) sym -> name, symaddr,
+ ms_type, (PTR) size, objfile);
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ msym->filename = filesymname;
+#endif
}
}
do_cleanups (back_to);
projects / deliverable / binutils-gdb.git / blobdiff