/* Dynamic architecture support for GDB, the GNU debugger.
- Copyright 1998, 1999, 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 1998-2016 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef GDBARCH_UTILS_H
#define GDBARCH_UTILS_H
-/* gdbarch trace variable */
-extern int gdbarch_debug;
+struct gdbarch;
+struct frame_info;
+struct minimal_symbol;
+struct type;
+struct gdbarch_info;
+
+/* An implementation of gdbarch_displaced_step_copy_insn for
+ processors that don't need to modify the instruction before
+ single-stepping the displaced copy.
+
+ Simply copy gdbarch_max_insn_length (ARCH) bytes from FROM to TO.
+ The closure is an array of that many bytes containing the
+ instruction's bytes, allocated with xmalloc. */
+extern struct displaced_step_closure *
+ simple_displaced_step_copy_insn (struct gdbarch *gdbarch,
+ CORE_ADDR from, CORE_ADDR to,
+ struct regcache *regs);
+
+/* Simple implementation of gdbarch_displaced_step_free_closure: Call
+ xfree.
+ This is appropriate for use with simple_displaced_step_copy_insn. */
+extern void
+ simple_displaced_step_free_closure (struct gdbarch *gdbarch,
+ struct displaced_step_closure *closure);
+
+/* Default implementation of gdbarch_displaced_hw_singlestep. */
+extern int
+ default_displaced_step_hw_singlestep (struct gdbarch *,
+ struct displaced_step_closure *);
+
+/* Possible value for gdbarch_displaced_step_location:
+ Place displaced instructions at the program's entry point,
+ leaving space for inferior function call return breakpoints. */
+extern CORE_ADDR displaced_step_at_entry_point (struct gdbarch *gdbarch);
+
+/* 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);
-/* Fallback for register convertible. */
-extern gdbarch_register_convertible_ftype generic_register_convertible_not;
+/* Identity functions on a CORE_ADDR. Just return the "addr". */
-/* Helper function for targets that don't know how my arguments are
- being passed */
-extern gdbarch_frame_num_args_ftype frame_num_args_unknown;
+extern CORE_ADDR core_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr);
+extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity;
-/* 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;
+/* No-op conversion of reg to regnum. */
-/* Frameless functions not identifable. */
-extern gdbarch_frameless_function_invocation_ftype generic_frameless_function_invocation_not;
+extern int no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg);
-/* 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;
+/* Do nothing version of coff_make_msymbol_special. */
-/* Map onto old REGISTER_NAMES. */
-extern char *legacy_register_name (int i);
+void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym);
-/* Accessor for old global function pointer for disassembly. */
-extern int legacy_print_insn (bfd_vma vma, disassemble_info *info);
+/* Do nothing default implementation of gdbarch_make_symbol_special. */
-/* Backward compatible call_dummy_words. */
-extern LONGEST legacy_call_dummy_words[];
-extern int legacy_sizeof_call_dummy_words;
+void default_make_symbol_special (struct symbol *sym, struct objfile *objfile);
-/* Typical remote_translate_xfer_address */
-extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address;
+/* Do nothing default implementation of gdbarch_adjust_dwarf2_addr. */
-/* 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;
+CORE_ADDR default_adjust_dwarf2_addr (CORE_ADDR pc);
-/* 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);
+/* Do nothing default implementation of gdbarch_adjust_dwarf2_line. */
-/* Floating point values. */
-extern const struct floatformat *default_float_format (struct gdbarch *gdbarch);
-extern const struct floatformat *default_double_format (struct gdbarch *gdbarch);
+CORE_ADDR default_adjust_dwarf2_line (CORE_ADDR addr, int rel);
-/* Helper function for targets that don't know how my arguments are
- being passed */
-extern int frame_num_args_unknown (struct frame_info *fi);
+/* Version of cannot_fetch_register() / cannot_store_register() that
+ always fails. */
+int cannot_register_not (struct gdbarch *gdbarch, int regnum);
-/* The following DEPRECATED interfaces are for pre- multi-arch legacy
- targets. */
+/* Legacy version of target_virtual_frame_pointer(). Assumes that
+ there is an gdbarch_deprecated_fp_regnum and that it is the same, cooked or
+ raw. */
-/* DEPRECATED pre- multi-arch interface. Explicitly set the dynamic
- target-system-dependent parameters based on bfd_architecture and
- machine. This function is deprecated, use
- set_gdbarch_from_arch_machine(). */
+extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer;
-extern void set_architecture_from_arch_mach (enum bfd_architecture, unsigned long);
+/* Default implementation of gdbarch_floatformat_for_type. */
+extern const struct floatformat **
+ default_floatformat_for_type (struct gdbarch *gdbarch,
+ const char *name, int len);
-/* DEPRECATED pre- multi-arch interface. Notify the target dependent
- backend of a change to the selected architecture. A zero return
- status indicates that the target did not like the change. */
+extern CORE_ADDR generic_skip_trampoline_code (struct frame_info *frame,
+ CORE_ADDR pc);
-extern int (*target_architecture_hook) (const struct bfd_arch_info *);
+extern CORE_ADDR generic_skip_solib_resolver (struct gdbarch *gdbarch,
+ CORE_ADDR pc);
+extern int generic_in_solib_return_trampoline (struct gdbarch *gdbarch,
+ CORE_ADDR pc, const char *name);
-/* Default raw->sim register re-numbering - does nothing. */
+extern int generic_stack_frame_destroyed_p (struct gdbarch *gdbarch,
+ CORE_ADDR pc);
-extern int default_register_sim_regno (int reg_nr);
+extern int default_code_of_frame_writable (struct gdbarch *gdbarch,
+ struct frame_info *frame);
-/* Identity function on a CORE_ADDR. Just returns its parameter. */
+/* By default, registers are not convertible. */
+extern int generic_convert_register_p (struct gdbarch *gdbarch, int regnum,
+ struct type *type);
-extern CORE_ADDR core_addr_identity (CORE_ADDR addr);
+extern int default_stabs_argument_has_addr (struct gdbarch *gdbarch,
+ struct type *type);
-/* No-op conversion of reg to regnum. */
+extern int generic_instruction_nullified (struct gdbarch *gdbarch,
+ struct regcache *regcache);
-extern int no_op_reg_to_regnum (int reg);
+int default_remote_register_number (struct gdbarch *gdbarch,
+ int regno);
-/* Default frame_args_address and frame_locals_address. */
+/* For compatibility with older architectures, returns
+ (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid
+ name. */
-extern CORE_ADDR default_frame_address (struct frame_info *);
+extern int legacy_register_sim_regno (struct gdbarch *gdbarch, int regnum);
-/* Default prepare_to_procced. */
+/* Return the selected byte order, or BFD_ENDIAN_UNKNOWN if no byte
+ order was explicitly selected. */
+extern enum bfd_endian selected_byte_order (void);
-extern int default_prepare_to_proceed (int select_it);
+/* Return the selected architecture's name, or NULL if no architecture
+ was explicitly selected. */
+extern const char *selected_architecture_name (void);
-extern int generic_prepare_to_proceed (int select_it);
+/* 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. */
-/* Versions of init_frame_pc(). Do nothing; do the default. */
+extern void gdbarch_info_init (struct gdbarch_info *info);
-void init_frame_pc_noop (int fromleaf, struct frame_info *prev);
+/* 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);
-void init_frame_pc_default (int fromleaf, struct frame_info *prev);
+/* Return the architecture for ABFD. If no suitable architecture
+ could be find, return NULL. */
-/* Version of cannot_fetch_register() / cannot_store_register() that
- always fails. */
+extern struct gdbarch *gdbarch_from_bfd (bfd *abfd);
-int cannot_register_not (int regnum);
+/* Return "current" architecture. If the target is running, this is the
+ architecture of the selected frame. Otherwise, the "current" architecture
+ defaults to the target architecture.
-/* Legacy version of target_virtual_frame_pointer(). Assumes that
- there is an FP_REGNUM and that it is the same, cooked or raw. */
+ This function should normally be called solely by the command interpreter
+ routines to determine the architecture to execute a command in. */
+extern struct gdbarch *get_current_arch (void);
-extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer;
+extern int default_has_shared_address_space (struct gdbarch *);
+
+extern int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch,
+ CORE_ADDR addr, char **msg);
+
+extern void default_remote_breakpoint_from_pc (struct gdbarch *,
+ CORE_ADDR *pcptr, int *kindptr);
+
+extern void default_gen_return_address (struct gdbarch *gdbarch,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ CORE_ADDR scope);
+
+extern const char *default_auto_charset (void);
+extern const char *default_auto_wide_charset (void);
+
+extern int default_return_in_first_hidden_param_p (struct gdbarch *,
+ struct type *);
+
+extern int default_insn_is_call (struct gdbarch *, CORE_ADDR);
+extern int default_insn_is_ret (struct gdbarch *, CORE_ADDR);
+extern int default_insn_is_jump (struct gdbarch *, CORE_ADDR);
+
+/* Do-nothing version of vsyscall_range. Returns false. */
+
+extern int default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range);
+
+/* Default way to advance the PC to the next instruction in order to
+ skip a permanent breakpoint. Increments the PC by the size of a
+ software breakpoint instruction, as determined with
+ gdbarch_breakpoint_from_pc. This matches how the breakpoints
+ module determines whether a breakpoint is permanent. */
+extern void default_skip_permanent_breakpoint (struct regcache *regcache);
+
+/* Symbols for gdbarch_infcall_mmap; their Linux PROT_* system
+ definitions would be dependent on compilation host. */
+#define GDB_MMAP_PROT_READ 0x1 /* Page can be read. */
+#define GDB_MMAP_PROT_WRITE 0x2 /* Page can be written. */
+#define GDB_MMAP_PROT_EXEC 0x4 /* Page can be executed. */
+
+extern CORE_ADDR default_infcall_mmap (CORE_ADDR size, unsigned prot);
+extern void default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size);
+extern char *default_gcc_target_options (struct gdbarch *gdbarch);
+extern const char *default_gnu_triplet_regexp (struct gdbarch *gdbarch);
+extern int default_addressable_memory_unit_size (struct gdbarch *gdbarch);
-extern CORE_ADDR generic_skip_trampoline_code (CORE_ADDR pc);
+extern void default_guess_tracepoint_registers (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ CORE_ADDR addr);
#endif
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