/* Dynamic architecture support for GDB, the GNU debugger.
- Copyright 1998-2000, Free Software Foundation, Inc.
+
+ Copyright (C) 1998, 1999, 2000, 2002, 2003, 2004, 2007
+ Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#ifndef GDBARCH_UTILS_H
#define GDBARCH_UTILS_H
+struct gdbarch;
+struct frame_info;
+struct minimal_symbol;
+struct type;
+struct gdbarch_info;
+
/* gdbarch trace variable */
extern int gdbarch_debug;
-/* Fallback for register convertible. */
-extern gdbarch_register_convertible_ftype generic_register_convertible_not;
-
-/* Helper function for targets that don't know how my arguments are
- being passed */
-extern gdbarch_frame_num_args_ftype frame_num_args_unknown;
-
-/* Implementation of breakpoint from PC using any of the deprecated
- macros BREAKPOINT, LITTLE_BREAKPOINT, BIG_BREAPOINT. For legacy
- targets that don't yet implement their own breakpoint_from_pc(). */
-extern gdbarch_breakpoint_from_pc_ftype legacy_breakpoint_from_pc;
+/* An implementation of return_value that props up architectures still
+ using USE_STRUCT_RETURN, EXTRACT_RETURN_VALUE and
+ STORE_RETURN_VALUE. See also the hacks in "stack.c". */
+enum return_value_convention legacy_return_value (struct gdbarch *gdbarch,
+ struct type *valtype,
+ struct regcache *regcache,
+ gdb_byte *readbuf,
+ const gdb_byte *writebuf);
-/* Frameless functions not identifable. */
-extern gdbarch_frameless_function_invocation_ftype generic_frameless_function_invocation_not;
+/* Implementation of extract return value that grubs around in the
+ register cache. */
+extern gdbarch_extract_return_value_ftype legacy_extract_return_value;
-/* Only structures, unions, and arrays are returned using the struct
- convention. Note that arrays are never passed by value in the C
- language family, so that case is irrelevant for C. */
-extern gdbarch_return_value_on_stack_ftype generic_return_value_on_stack_not;
+/* Implementation of store return value that grubs the register cache. */
+extern gdbarch_store_return_value_ftype legacy_store_return_value;
-/* Map onto old REGISTER_NAMES. */
-extern char *legacy_register_name (int i);
-
-/* Backward compatible call_dummy_words. */
-extern LONGEST legacy_call_dummy_words[];
-extern int legacy_sizeof_call_dummy_words;
+/* To return any structure or union type by value, store it at the
+ address passed as an invisible first argument to the function. */
+extern gdbarch_deprecated_use_struct_convention_ftype always_use_struct_convention;
/* Typical remote_translate_xfer_address */
extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address;
-/* Generic implementation of prologue_frameless_p. Just calls
- SKIP_PROLOG and checks the return value to see if it actually
- changed. */
-extern gdbarch_prologue_frameless_p_ftype generic_prologue_frameless_p;
-
/* The only possible cases for inner_than. */
extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs);
extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs);
extern const struct floatformat *default_float_format (struct gdbarch *gdbarch);
extern const struct floatformat *default_double_format (struct gdbarch *gdbarch);
-/* Helper function for targets that don't know how my arguments are
- being passed */
-extern int frame_num_args_unknown (struct frame_info *fi);
+/* Identity functions on a CORE_ADDR. Just return the "addr". */
+
+extern CORE_ADDR core_addr_identity (CORE_ADDR addr);
+extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity;
+
+/* No-op conversion of reg to regnum. */
+
+extern int no_op_reg_to_regnum (int reg);
+
+/* Do nothing version of elf_make_msymbol_special. */
+
+void default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym);
+
+/* Do nothing version of coff_make_msymbol_special. */
+
+void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym);
+
+/* Version of cannot_fetch_register() / cannot_store_register() that
+ always fails. */
+
+int cannot_register_not (int regnum);
+
+/* Legacy version of target_virtual_frame_pointer(). Assumes that
+ there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
+ raw. */
+
+extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer;
+
+extern CORE_ADDR generic_skip_trampoline_code (CORE_ADDR pc);
+
+extern CORE_ADDR generic_skip_solib_resolver (struct gdbarch *gdbarch,
+ CORE_ADDR pc);
+
+extern int generic_in_solib_return_trampoline (CORE_ADDR pc, char *name);
+
+extern int generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc);
+
+/* Assume that the world is sane, a registers raw and virtual size
+ both match its type. */
+
+extern int generic_register_size (int regnum);
+
+/* Assume that the world is sane, the registers are all adjacent. */
+extern int generic_register_byte (int regnum);
+
+/* Prop up old targets that use various sigtramp macros. */
+extern int legacy_pc_in_sigtramp (CORE_ADDR pc, char *name);
+
+/* By default, registers are not convertible. */
+extern int generic_convert_register_p (int regnum, struct type *type);
+
+extern int default_stabs_argument_has_addr (struct gdbarch *gdbarch,
+ struct type *type);
+
+extern int generic_instruction_nullified (struct gdbarch *gdbarch,
+ struct regcache *regcache);
+
+/* For compatibility with older architectures, returns
+ (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid
+ name. */
+
+extern int legacy_register_sim_regno (int regnum);
+/* Return the selected architecture's name, or NULL if no architecture
+ was explicitly selected. */
+extern const char *selected_architecture_name (void);
-/* The following DEPRECATED interfaces are for pre- multi-arch legacy
- targets. */
+/* Initialize a ``struct info''. Can't use memset(0) since some
+ default values are not zero. "fill" takes all available
+ information and fills in any unspecified fields. */
-/* DEPRECATED pre- multi-arch interface. Explicitly set the dynamic
- target-system-dependant parameters based on bfd_architecture and
- machine. This function is deprecated, use
- set_gdbarch_from_arch_machine(). */
+extern void gdbarch_info_init (struct gdbarch_info *info);
-extern void set_architecture_from_arch_mach (enum bfd_architecture, unsigned long);
+/* Similar to init, but this time fill in the blanks. Information is
+ obtained from the global "set ..." options and explicitly
+ initialized INFO fields. */
+extern void gdbarch_info_fill (struct gdbarch_info *info);
-/* DEPRECATED pre- multi-arch interface. Notify the target dependant
- backend of a change to the selected architecture. A zero return
- status indicates that the target did not like the change. */
+/* Return the architecture for ABFD. If no suitable architecture
+ could be find, return NULL. */
-extern int (*target_architecture_hook) (const struct bfd_arch_info *);
+extern struct gdbarch *gdbarch_from_bfd (bfd *abfd);
#endif
projects / deliverable / binutils-gdb.git / blobdiff