/* Dynamic architecture support for GDB, the GNU debugger.
- Copyright 1998-1999, Free Software Foundation, Inc.
+ Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of GDB.
/* Just include everything in sight so that the every old definition
of macro is visible. */
#include "gdb_string.h"
-#include <ctype.h>
#include "symtab.h"
#include "frame.h"
#include "inferior.h"
#include "symfile.h" /* for overlay functions */
#endif
+#include "version.h"
+
#include "floatformat.h"
/* Convenience macro for allocting typesafe memory. */
else
return names[i];
#else
- internal_error ("legacy_register_name: called.");
+ internal_error (__FILE__, __LINE__,
+ "legacy_register_name: called.");
return NULL;
#endif
}
/* Helper functions for INNER_THAN */
int
-core_addr_lessthan (lhs, rhs)
- CORE_ADDR lhs;
- CORE_ADDR rhs;
+core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
{
return (lhs < rhs);
}
int
-core_addr_greaterthan (lhs, rhs)
- CORE_ADDR lhs;
- CORE_ADDR rhs;
+core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
{
return (lhs > rhs);
}
case LITTLE_ENDIAN:
return &floatformat_ieee_single_little;
default:
- internal_error ("default_float_format: bad byte order");
+ internal_error (__FILE__, __LINE__,
+ "default_float_format: bad byte order");
}
}
case LITTLE_ENDIAN:
return &floatformat_ieee_double_little;
default:
- internal_error ("default_double_format: bad byte order");
+ internal_error (__FILE__, __LINE__,
+ "default_double_format: bad byte order");
}
}
/* Misc helper functions for targets. */
int
-frame_num_args_unknown (fi)
- struct frame_info *fi;
+frame_num_args_unknown (struct frame_info *fi)
{
return -1;
}
int
-generic_register_convertible_not (num)
- int num;
+generic_register_convertible_not (int num)
{
return 0;
}
+
+int
+default_register_sim_regno (int num)
+{
+ return num;
+}
+
+
+CORE_ADDR
+default_convert_from_func_ptr_addr (CORE_ADDR addr)
+{
+ return addr;
+}
+
+int
+no_op_reg_to_regnum (int reg)
+{
+ return reg;
+}
+
+/* For use by frame_args_address and frame_locals_address. */
+CORE_ADDR
+default_frame_address (struct frame_info *fi)
+{
+ return fi->frame;
+}
+
+/* Functions to manipulate the endianness of the target. */
+
+#ifdef TARGET_BYTE_ORDER_SELECTABLE
+/* compat - Catch old targets that expect a selectable byte-order to
+ default to BIG_ENDIAN */
+#ifndef TARGET_BYTE_ORDER_DEFAULT
+#define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN
+#endif
+#endif
+#if !TARGET_BYTE_ORDER_SELECTABLE_P
+#ifndef TARGET_BYTE_ORDER_DEFAULT
+/* compat - Catch old non byte-order selectable targets that do not
+ define TARGET_BYTE_ORDER_DEFAULT and instead expect
+ TARGET_BYTE_ORDER to be used as the default. For targets that
+ defined neither TARGET_BYTE_ORDER nor TARGET_BYTE_ORDER_DEFAULT the
+ below will get a strange compiler warning. */
+#define TARGET_BYTE_ORDER_DEFAULT TARGET_BYTE_ORDER
+#endif
+#endif
+#ifndef TARGET_BYTE_ORDER_DEFAULT
+#define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN /* arbitrary */
+#endif
+/* ``target_byte_order'' is only used when non- multi-arch.
+ Multi-arch targets obtain the current byte order using
+ TARGET_BYTE_ORDER which is controlled by gdbarch.*. */
+int target_byte_order = TARGET_BYTE_ORDER_DEFAULT;
+int target_byte_order_auto = 1;
+
+static const char endian_big[] = "big";
+static const char endian_little[] = "little";
+static const char endian_auto[] = "auto";
+static const char *endian_enum[] =
+{
+ endian_big,
+ endian_little,
+ endian_auto,
+ NULL,
+};
+static const char *set_endian_string;
+
+/* Called by ``show endian''. */
+
+static void
+show_endian (char *args, int from_tty)
+{
+ if (TARGET_BYTE_ORDER_AUTO)
+ printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n",
+ (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"));
+ else
+ printf_unfiltered ("The target is assumed to be %s endian\n",
+ (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"));
+}
+
+static void
+set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c)
+{
+ if (!TARGET_BYTE_ORDER_SELECTABLE_P)
+ {
+ printf_unfiltered ("Byte order is not selectable.");
+ }
+ else if (set_endian_string == endian_auto)
+ {
+ target_byte_order_auto = 1;
+ }
+ else if (set_endian_string == endian_little)
+ {
+ target_byte_order_auto = 0;
+ if (GDB_MULTI_ARCH)
+ {
+ struct gdbarch_info info;
+ memset (&info, 0, sizeof info);
+ info.byte_order = LITTLE_ENDIAN;
+ if (! gdbarch_update_p (info))
+ {
+ printf_unfiltered ("Little endian target not supported by GDB\n");
+ }
+ }
+ else
+ {
+ target_byte_order = LITTLE_ENDIAN;
+ }
+ }
+ else if (set_endian_string == endian_big)
+ {
+ target_byte_order_auto = 0;
+ if (GDB_MULTI_ARCH)
+ {
+ struct gdbarch_info info;
+ memset (&info, 0, sizeof info);
+ info.byte_order = BIG_ENDIAN;
+ if (! gdbarch_update_p (info))
+ {
+ printf_unfiltered ("Big endian target not supported by GDB\n");
+ }
+ }
+ else
+ {
+ target_byte_order = BIG_ENDIAN;
+ }
+ }
+ else
+ internal_error (__FILE__, __LINE__,
+ "set_endian: bad value");
+ show_endian (NULL, from_tty);
+}
+
+/* Set the endianness from a BFD. */
+
+static void
+set_endian_from_file (bfd *abfd)
+{
+ if (GDB_MULTI_ARCH)
+ internal_error (__FILE__, __LINE__,
+ "set_endian_from_file: not for multi-arch");
+ if (TARGET_BYTE_ORDER_SELECTABLE_P)
+ {
+ int want;
+
+ if (bfd_big_endian (abfd))
+ want = BIG_ENDIAN;
+ else
+ want = LITTLE_ENDIAN;
+ if (TARGET_BYTE_ORDER_AUTO)
+ target_byte_order = want;
+ else if (TARGET_BYTE_ORDER != want)
+ warning ("%s endian file does not match %s endian target.",
+ want == BIG_ENDIAN ? "big" : "little",
+ TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
+ }
+ else
+ {
+ if (bfd_big_endian (abfd)
+ ? TARGET_BYTE_ORDER != BIG_ENDIAN
+ : TARGET_BYTE_ORDER == BIG_ENDIAN)
+ warning ("%s endian file does not match %s endian target.",
+ bfd_big_endian (abfd) ? "big" : "little",
+ TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
+ }
+}
+
+
+/* Functions to manipulate the architecture of the target */
+
+enum set_arch { set_arch_auto, set_arch_manual };
+
+int target_architecture_auto = 1;
+
+const char *set_architecture_string;
+
+/* Old way of changing the current architecture. */
+
+extern const struct bfd_arch_info bfd_default_arch_struct;
+const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct;
+int (*target_architecture_hook) (const struct bfd_arch_info *ap);
+
+static int
+arch_ok (const struct bfd_arch_info *arch)
+{
+ if (GDB_MULTI_ARCH)
+ internal_error (__FILE__, __LINE__,
+ "arch_ok: not multi-arched");
+ /* Should be performing the more basic check that the binary is
+ compatible with GDB. */
+ /* Check with the target that the architecture is valid. */
+ return (target_architecture_hook == NULL
+ || target_architecture_hook (arch));
+}
+
+static void
+set_arch (const struct bfd_arch_info *arch,
+ enum set_arch type)
+{
+ if (GDB_MULTI_ARCH)
+ internal_error (__FILE__, __LINE__,
+ "set_arch: not multi-arched");
+ switch (type)
+ {
+ case set_arch_auto:
+ if (!arch_ok (arch))
+ warning ("Target may not support %s architecture",
+ arch->printable_name);
+ target_architecture = arch;
+ break;
+ case set_arch_manual:
+ if (!arch_ok (arch))
+ {
+ printf_unfiltered ("Target does not support `%s' architecture.\n",
+ arch->printable_name);
+ }
+ else
+ {
+ target_architecture_auto = 0;
+ target_architecture = arch;
+ }
+ break;
+ }
+ if (gdbarch_debug)
+ gdbarch_dump (current_gdbarch, gdb_stdlog);
+}
+
+/* Set the architecture from arch/machine (deprecated) */
+
+void
+set_architecture_from_arch_mach (enum bfd_architecture arch,
+ unsigned long mach)
+{
+ const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach);
+ if (GDB_MULTI_ARCH)
+ internal_error (__FILE__, __LINE__,
+ "set_architecture_from_arch_mach: not multi-arched");
+ if (wanted != NULL)
+ set_arch (wanted, set_arch_manual);
+ else
+ internal_error (__FILE__, __LINE__,
+ "gdbarch: hardwired architecture/machine not recognized");
+}
+
+/* Set the architecture from a BFD (deprecated) */
+
+static void
+set_architecture_from_file (bfd *abfd)
+{
+ const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd);
+ if (GDB_MULTI_ARCH)
+ internal_error (__FILE__, __LINE__,
+ "set_architecture_from_file: not multi-arched");
+ if (target_architecture_auto)
+ {
+ set_arch (wanted, set_arch_auto);
+ }
+ else if (wanted != target_architecture)
+ {
+ warning ("%s architecture file may be incompatible with %s target.",
+ wanted->printable_name,
+ target_architecture->printable_name);
+ }
+}
+
+
+/* Called if the user enters ``show architecture'' without an
+ argument. */
+
+static void
+show_architecture (char *args, int from_tty)
+{
+ const char *arch;
+ arch = TARGET_ARCHITECTURE->printable_name;
+ if (target_architecture_auto)
+ printf_filtered ("The target architecture is set automatically (currently %s)\n", arch);
+ else
+ printf_filtered ("The target architecture is assumed to be %s\n", arch);
+}
+
+
+/* Called if the user enters ``set architecture'' with or without an
+ argument. */
+
+static void
+set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c)
+{
+ if (strcmp (set_architecture_string, "auto") == 0)
+ {
+ target_architecture_auto = 1;
+ }
+ else if (GDB_MULTI_ARCH)
+ {
+ struct gdbarch_info info;
+ memset (&info, 0, sizeof info);
+ info.bfd_arch_info = bfd_scan_arch (set_architecture_string);
+ if (info.bfd_arch_info == NULL)
+ internal_error (__FILE__, __LINE__,
+ "set_architecture: bfd_scan_arch failed");
+ if (gdbarch_update_p (info))
+ target_architecture_auto = 0;
+ else
+ printf_unfiltered ("Architecture `%s' not recognized.\n",
+ set_architecture_string);
+ }
+ else
+ {
+ const struct bfd_arch_info *arch
+ = bfd_scan_arch (set_architecture_string);
+ if (arch == NULL)
+ internal_error (__FILE__, __LINE__,
+ "set_architecture: bfd_scan_arch failed");
+ set_arch (arch, set_arch_manual);
+ }
+ show_architecture (NULL, from_tty);
+}
+
+/* Called if the user enters ``info architecture'' without an argument. */
+
+static void
+info_architecture (char *args, int from_tty)
+{
+ printf_filtered ("Available architectures are:\n");
+ if (GDB_MULTI_ARCH)
+ {
+ const char **arches = gdbarch_printable_names ();
+ const char **arch;
+ for (arch = arches; *arch != NULL; arch++)
+ {
+ printf_filtered (" %s", *arch);
+ }
+ xfree (arches);
+ }
+ else
+ {
+ enum bfd_architecture a;
+ for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++)
+ {
+ const struct bfd_arch_info *ap;
+ for (ap = bfd_lookup_arch (a, 0);
+ ap != NULL;
+ ap = ap->next)
+ {
+ printf_filtered (" %s", ap->printable_name);
+ ap = ap->next;
+ }
+ }
+ }
+ printf_filtered ("\n");
+}
+
+/* Set the dynamic target-system-dependent parameters (architecture,
+ byte-order) using information found in the BFD */
+
+void
+set_gdbarch_from_file (bfd *abfd)
+{
+ if (GDB_MULTI_ARCH)
+ {
+ struct gdbarch_info info;
+ memset (&info, 0, sizeof info);
+ info.abfd = abfd;
+ if (! gdbarch_update_p (info))
+ error ("Architecture of file not recognized.\n");
+ }
+ else
+ {
+ set_architecture_from_file (abfd);
+ set_endian_from_file (abfd);
+ }
+}
+
+/* Initialize the current architecture. Update the ``set
+ architecture'' command so that it specifies a list of valid
+ architectures. */
+
+#ifdef DEFAULT_BFD_ARCH
+extern const bfd_arch_info_type DEFAULT_BFD_ARCH;
+static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH;
+#else
+static const bfd_arch_info_type *default_bfd_arch;
+#endif
+
+#ifdef DEFAULT_BFD_VEC
+extern const bfd_target DEFAULT_BFD_VEC;
+static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC;
+#else
+static const bfd_target *default_bfd_vec;
+#endif
+
+void
+initialize_current_architecture (void)
+{
+ const char **arches = gdbarch_printable_names ();
+
+ /* determine a default architecture and byte order. */
+ struct gdbarch_info info;
+ memset (&info, 0, sizeof (info));
+
+ /* Find a default architecture. */
+ if (info.bfd_arch_info == NULL
+ && default_bfd_arch != NULL)
+ info.bfd_arch_info = default_bfd_arch;
+ if (info.bfd_arch_info == NULL)
+ {
+ /* Choose the architecture by taking the first one
+ alphabetically. */
+ const char *chosen = arches[0];
+ const char **arch;
+ for (arch = arches; *arch != NULL; arch++)
+ {
+ if (strcmp (*arch, chosen) < 0)
+ chosen = *arch;
+ }
+ if (chosen == NULL)
+ internal_error (__FILE__, __LINE__,
+ "initialize_current_architecture: No arch");
+ info.bfd_arch_info = bfd_scan_arch (chosen);
+ if (info.bfd_arch_info == NULL)
+ internal_error (__FILE__, __LINE__,
+ "initialize_current_architecture: Arch not found");
+ }
+
+ /* take several guesses at a byte order. */
+ /* NB: can't use TARGET_BYTE_ORDER_DEFAULT as its definition is
+ forced above. */
+ if (info.byte_order == 0
+ && default_bfd_vec != NULL)
+ {
+ /* Extract BFD's default vector's byte order. */
+ switch (default_bfd_vec->byteorder)
+ {
+ case BFD_ENDIAN_BIG:
+ info.byte_order = BIG_ENDIAN;
+ break;
+ case BFD_ENDIAN_LITTLE:
+ info.byte_order = LITTLE_ENDIAN;
+ break;
+ default:
+ break;
+ }
+ }
+ if (info.byte_order == 0)
+ {
+ /* look for ``*el-*'' in the target name. */
+ const char *chp;
+ chp = strchr (target_name, '-');
+ if (chp != NULL
+ && chp - 2 >= target_name
+ && strncmp (chp - 2, "el", 2) == 0)
+ info.byte_order = LITTLE_ENDIAN;
+ }
+ if (info.byte_order == 0)
+ {
+ /* Wire it to big-endian!!! */
+ info.byte_order = BIG_ENDIAN;
+ }
+
+ if (GDB_MULTI_ARCH)
+ {
+ if (! gdbarch_update_p (info))
+ {
+ internal_error (__FILE__, __LINE__,
+ "initialize_current_architecture: Selection of initial architecture failed");
+ }
+ }
+
+ /* Create the ``set architecture'' command appending ``auto'' to the
+ list of architectures. */
+ {
+ struct cmd_list_element *c;
+ /* Append ``auto''. */
+ int nr;
+ for (nr = 0; arches[nr] != NULL; nr++);
+ arches = xrealloc (arches, sizeof (char*) * (nr + 2));
+ arches[nr + 0] = "auto";
+ arches[nr + 1] = NULL;
+ /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead
+ of ``const char *''. We just happen to know that the casts are
+ safe. */
+ c = add_set_enum_cmd ("architecture", class_support,
+ arches, &set_architecture_string,
+ "Set architecture of target.",
+ &setlist);
+ c->function.sfunc = set_architecture;
+ add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
+ /* Don't use set_from_show - need to print both auto/manual and
+ current setting. */
+ add_cmd ("architecture", class_support, show_architecture,
+ "Show the current target architecture", &showlist);
+ c = add_cmd ("architecture", class_support, info_architecture,
+ "List supported target architectures", &infolist);
+ deprecate_cmd (c, "set architecture");
+ }
+}
+
+
/* */
-extern initialize_file_ftype __initialize_gdbarch_utils;
+extern initialize_file_ftype _initialize_gdbarch_utils;
void
-__initialize_gdbarch_utils (void)
+_initialize_gdbarch_utils (void)
{
+ struct cmd_list_element *c;
+ c = add_set_enum_cmd ("endian", class_support,
+ endian_enum, &set_endian_string,
+ "Set endianness of target.",
+ &setlist);
+ c->function.sfunc = set_endian;
+ /* Don't use set_from_show - need to print both auto/manual and
+ current setting. */
+ add_cmd ("endian", class_support, show_endian,
+ "Show the current byte-order", &showlist);
}
projects / deliverable / binutils-gdb.git / blobdiff