/* OS ABI variant handling for GDB.
- Copyright 2001, 2002 Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GDB.
Boston, MA 02111-1307, USA. */
#include "defs.h"
+
+#include "gdb_assert.h"
+#include "gdb_string.h"
+
#include "osabi.h"
+#include "arch-utils.h"
+#include "gdbcmd.h"
+#include "command.h"
#include "elf-bfd.h"
+#ifndef GDB_OSABI_DEFAULT
+#define GDB_OSABI_DEFAULT GDB_OSABI_UNKNOWN
+#endif
+
+/* State for the "set osabi" command. */
+static enum { osabi_auto, osabi_default, osabi_user } user_osabi_state;
+static enum gdb_osabi user_selected_osabi;
+static const char *gdb_osabi_available_names[GDB_OSABI_INVALID + 3] = {
+ "auto",
+ "default",
+ "none",
+ NULL
+};
+static const char *set_osabi_string;
/* This table matches the indices assigned to enum gdb_osabi. Keep
them in sync. */
static const char * const gdb_osabi_names[] =
{
- "<unknown>",
+ "none",
"SVR4",
"GNU/Hurd",
"Windows CE",
"DJGPP",
"NetWare",
+ "Irix",
+ "LynxOS",
+ "Interix",
+ "HP/UX ELF",
+ "HP/UX SOM",
"ARM EABI v1",
"ARM EABI v2",
"ARM APCS",
+ "QNX Neutrino",
+
+ "Cygwin",
"<invalid>"
};
struct gdb_osabi_handler
{
struct gdb_osabi_handler *next;
- enum bfd_architecture arch;
+ const struct bfd_arch_info *arch_info;
enum gdb_osabi osabi;
void (*init_osabi)(struct gdbarch_info, struct gdbarch *);
};
static struct gdb_osabi_handler *gdb_osabi_handler_list;
void
-gdbarch_register_osabi (enum bfd_architecture arch, enum gdb_osabi osabi,
+gdbarch_register_osabi (enum bfd_architecture arch, unsigned long machine,
+ enum gdb_osabi osabi,
void (*init_osabi)(struct gdbarch_info,
struct gdbarch *))
{
struct gdb_osabi_handler **handler_p;
+ const struct bfd_arch_info *arch_info = bfd_lookup_arch (arch, machine);
+ const char **name_ptr;
/* Registering an OS ABI handler for "unknown" is not allowed. */
if (osabi == GDB_OSABI_UNKNOWN)
"OS ABI \"%s\" for architecture %s was made. The handler will "
"not be registered",
gdbarch_osabi_name (osabi),
- bfd_printable_arch_mach (arch, 0));
+ bfd_printable_arch_mach (arch, machine));
return;
}
+ gdb_assert (arch_info);
+
for (handler_p = &gdb_osabi_handler_list; *handler_p != NULL;
handler_p = &(*handler_p)->next)
{
- if ((*handler_p)->arch == arch
+ if ((*handler_p)->arch_info == arch_info
&& (*handler_p)->osabi == osabi)
{
internal_error
"gdbarch_register_osabi: A handler for OS ABI \"%s\" "
"has already been registered for architecture %s",
gdbarch_osabi_name (osabi),
- bfd_printable_arch_mach (arch, 0));
+ arch_info->printable_name);
/* If user wants to continue, override previous definition. */
(*handler_p)->init_osabi = init_osabi;
return;
(*handler_p)
= (struct gdb_osabi_handler *) xmalloc (sizeof (struct gdb_osabi_handler));
(*handler_p)->next = NULL;
- (*handler_p)->arch = arch;
+ (*handler_p)->arch_info = arch_info;
(*handler_p)->osabi = osabi;
(*handler_p)->init_osabi = init_osabi;
+
+ /* Add this OS ABI to the list of enum values for "set osabi", if it isn't
+ already there. */
+ for (name_ptr = gdb_osabi_available_names; *name_ptr; name_ptr ++)
+ {
+ if (*name_ptr == gdbarch_osabi_name (osabi))
+ return;
+ }
+ *name_ptr++ = gdbarch_osabi_name (osabi);
+ *name_ptr = NULL;
}
\f
enum gdb_osabi osabi, match;
int match_specific;
+ /* If we aren't in "auto" mode, return the specified OS ABI. */
+ if (user_osabi_state == osabi_user)
+ return user_selected_osabi;
+
+ /* If we don't have a binary, return the default OS ABI (if set) or
+ an inconclusive result (otherwise). */
+ if (abfd == NULL)
+ {
+ if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN)
+ return GDB_OSABI_DEFAULT;
+ else
+ return GDB_OSABI_UNINITIALIZED;
+ }
+
match = GDB_OSABI_UNKNOWN;
match_specific = 0;
}
}
- return match;
+ /* If we didn't find a match, but a default was specified at configure
+ time, return the default. */
+ if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN && match == GDB_OSABI_UNKNOWN)
+ return GDB_OSABI_DEFAULT;
+ else
+ return match;
}
void
-gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch,
- enum gdb_osabi osabi)
+gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- struct gdb_osabi_handler *handler;
- bfd *abfd = info.abfd;
const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (gdbarch);
+ const struct bfd_arch_info *compatible;
+ struct gdb_osabi_handler *handler;
- if (osabi == GDB_OSABI_UNKNOWN)
+ if (info.osabi == GDB_OSABI_UNKNOWN)
{
- /* Don't complain about not knowing the OS ABI if we don't
- have an inferior. */
- if (info.abfd)
- fprintf_filtered
- (gdb_stderr, "GDB doesn't recognize the OS ABI of the inferior. "
- "Attempting to continue with the default %s settings",
- bfd_printable_arch_mach (arch_info->arch, arch_info->mach));
+ /* Don't complain about an unknown OSABI. Assume the user knows
+ what they are doing. */
return;
}
for (handler = gdb_osabi_handler_list; handler != NULL;
handler = handler->next)
{
- if (handler->arch == bfd_get_arch (abfd)
- && handler->osabi == osabi)
+ if (handler->osabi != info.osabi)
+ continue;
+
+ /* Check whether the machine type and architecture of the
+ handler are compatible with the desired machine type and
+ architecture.
+
+ NOTE: kettenis/20021027: There may be more than one machine
+ type that is compatible with the desired machine type. Right
+ now we simply return the first match, which is fine for now.
+ However, we might want to do something smarter in the future. */
+ compatible = arch_info->compatible (arch_info, handler->arch_info);
+ if (compatible == handler->arch_info)
{
(*handler->init_osabi) (info, gdbarch);
return;
"A handler for the OS ABI \"%s\" is not built into this "
"configuration of GDB. "
"Attempting to continue with the default %s settings",
- gdbarch_osabi_name (osabi),
+ gdbarch_osabi_name (info.osabi),
bfd_printable_arch_mach (arch_info->arch, arch_info->mach));
}
\f
case ELFOSABI_SOLARIS:
osabi = GDB_OSABI_SOLARIS;
break;
+
+ case ELFOSABI_HPUX:
+ osabi = GDB_OSABI_HPUX_ELF;
+ break;
+ }
+
+ if (osabi == GDB_OSABI_UNKNOWN)
+ {
+ /* The FreeBSD folks have been naughty; they stored the string
+ "FreeBSD" in the padding of the e_ident field of the ELF
+ header to "brand" their ELF binaries in FreeBSD 3.x. */
+ if (strcmp (&elf_elfheader (abfd)->e_ident[8], "FreeBSD") == 0)
+ osabi = GDB_OSABI_FREEBSD_ELF;
}
return osabi;
}
\f
+static void
+set_osabi (char *args, int from_tty, struct cmd_list_element *c)
+{
+ struct gdbarch_info info;
+
+ if (strcmp (set_osabi_string, "auto") == 0)
+ user_osabi_state = osabi_auto;
+ else if (strcmp (set_osabi_string, "default") == 0)
+ {
+ user_selected_osabi = GDB_OSABI_DEFAULT;
+ user_osabi_state = osabi_user;
+ }
+ else if (strcmp (set_osabi_string, "none") == 0)
+ {
+ user_selected_osabi = GDB_OSABI_UNKNOWN;
+ user_osabi_state = osabi_user;
+ }
+ else
+ {
+ int i;
+ for (i = 1; i < GDB_OSABI_INVALID; i++)
+ if (strcmp (set_osabi_string, gdbarch_osabi_name (i)) == 0)
+ {
+ user_selected_osabi = i;
+ user_osabi_state = osabi_user;
+ break;
+ }
+ if (i == GDB_OSABI_INVALID)
+ internal_error (__FILE__, __LINE__,
+ "Invalid OS ABI \"%s\" passed to command handler.",
+ set_osabi_string);
+ }
+ /* NOTE: At some point (true multiple architectures) we'll need to be more
+ graceful here. */
+ gdbarch_info_init (&info);
+ if (! gdbarch_update_p (info))
+ internal_error (__FILE__, __LINE__, "Updating OS ABI failed.");
+}
+
+void
+show_osabi (char *args, int from_tty)
+{
+ if (user_osabi_state == osabi_auto)
+ printf_filtered ("The current OS ABI is \"auto\" (currently \"%s\").\n",
+ gdbarch_osabi_name (gdbarch_osabi (current_gdbarch)));
+ else
+ printf_filtered ("The current OS ABI is \"%s\".\n",
+ gdbarch_osabi_name (user_selected_osabi));
+
+ if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN)
+ printf_filtered ("The default OS ABI is \"%s\".\n",
+ gdbarch_osabi_name (GDB_OSABI_DEFAULT));
+}
+\f
void
_initialize_gdb_osabi (void)
{
+ struct cmd_list_element *c;
+
if (strcmp (gdb_osabi_names[GDB_OSABI_INVALID], "<invalid>") != 0)
internal_error
(__FILE__, __LINE__,
gdbarch_register_osabi_sniffer (bfd_arch_unknown,
bfd_target_elf_flavour,
generic_elf_osabi_sniffer);
+
+ if (!GDB_MULTI_ARCH)
+ return;
+
+ /* Register the "set osabi" command. */
+ c = add_set_enum_cmd ("osabi", class_support, gdb_osabi_available_names,
+ &set_osabi_string, "Set OS ABI of target.", &setlist);
+
+ set_cmd_sfunc (c, set_osabi);
+ add_cmd ("osabi", class_support, show_osabi, "Show OS/ABI of target.",
+ &showlist);
+ user_osabi_state = osabi_auto;
}
projects / deliverable / binutils-gdb.git / blobdiff