/* Target-dependent code for DICOS running on i386's, for GDB.
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "osabi.h"
-#include "gdb_string.h"
-#include "solib.h"
-#include "solib-target.h"
+#include "dicos-tdep.h"
static void
i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
- set_solib_ops (gdbarch, &solib_target_so_ops);
-}
-
-/* Look in the elf symbol table of ABFD for a symbol named WANTED.
- Return true if found. */
-static int
-i386_dicos_bfd_has_symbol_p (bfd *abfd, const char *wanted)
-{
- long storage_needed;
- int ret = 0;
- asymbol **symbol_table = NULL;
-
- storage_needed = bfd_get_symtab_upper_bound (abfd);
- if (storage_needed < 0)
- {
- warning (_("Can't read elf symbols from %s: %s"), bfd_get_filename (abfd),
- bfd_errmsg (bfd_get_error ()));
- return 0;
- }
-
- if (storage_needed > 0)
- {
- long i, symcount;
-
- symbol_table = xmalloc (storage_needed);
- symcount = bfd_canonicalize_symtab (abfd, symbol_table);
-
- if (symcount < 0)
- warning (_("Can't read elf symbols from %s: %s"),
- bfd_get_filename (abfd),
- bfd_errmsg (bfd_get_error ()));
- else
- {
- for (i = 0; i < symcount; i++)
- {
- asymbol *sym = symbol_table[i];
- if (sym->name != NULL
- && wanted[0] == sym->name[0]
- && strcmp (wanted + 1, sym->name + 1) == 0)
- {
- ret = 1;
- break;
- }
- }
- }
- }
-
- xfree (symbol_table);
- return ret;
+ dicos_init_abi (gdbarch);
}
static enum gdb_osabi
{
char *target_name = bfd_get_target (abfd);
- /* DICOS debug info files don't have a .note.ABI-tag marker or
- something similar. We do know there's always a "header" section
- of 36 bytes, and there's always a "Dicos_loadModuleInfo" symbol
- defined. Look for the section first, as that should be
- cheaper. */
- if (strcmp (target_name, "elf32-i386") == 0)
- {
- asection *section = bfd_get_section_by_name (abfd, "header");
- if (section
- && bfd_section_size (abfd, section) == 36
- && i386_dicos_bfd_has_symbol_p (abfd, "Dicos_loadModuleInfo"))
- return GDB_OSABI_DICOS;
- }
+ /* On x86-DICOS, the Load Module's "header" section is 36 bytes. */
+ if (strcmp (target_name, "elf32-i386") == 0
+ && dicos_load_module_p (abfd, 36))
+ return GDB_OSABI_DICOS;
return GDB_OSABI_UNKNOWN;
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_i386_dicos_tdep (void);
-
void
_initialize_i386_dicos_tdep (void)
{