| /* Dynamic architecture support for GDB, the GNU debugger. |
| |
| Copyright (C) 1998-2021 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 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef ARCH_UTILS_H |
| #define ARCH_UTILS_H |
| |
| #include "gdbarch.h" |
| |
| struct frame_info; |
| struct minimal_symbol; |
| struct type; |
| struct gdbarch_info; |
| struct dwarf2_frame_state; |
| |
| template <size_t bp_size, const gdb_byte *break_insn> |
| struct bp_manipulation |
| { |
| static int |
| kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) |
| { |
| return bp_size; |
| } |
| |
| static const gdb_byte * |
| bp_from_kind (struct gdbarch *gdbarch, int kind, int *size) |
| { |
| *size = kind; |
| return break_insn; |
| } |
| }; |
| |
| template <size_t bp_size, |
| const gdb_byte *break_insn_little, |
| const gdb_byte *break_insn_big> |
| struct bp_manipulation_endian |
| { |
| static int |
| kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) |
| { |
| return bp_size; |
| } |
| |
| static const gdb_byte * |
| bp_from_kind (struct gdbarch *gdbarch, int kind, int *size) |
| { |
| *size = kind; |
| if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| return break_insn_big; |
| else |
| return break_insn_little; |
| } |
| }; |
| |
| #define BP_MANIPULATION(BREAK_INSN) \ |
| bp_manipulation<sizeof (BREAK_INSN), BREAK_INSN> |
| |
| #define BP_MANIPULATION_ENDIAN(BREAK_INSN_LITTLE, BREAK_INSN_BIG) \ |
| bp_manipulation_endian<sizeof (BREAK_INSN_LITTLE), \ |
| BREAK_INSN_LITTLE, BREAK_INSN_BIG> |
| |
| /* Default implementation of gdbarch_displaced_hw_singlestep. */ |
| extern bool default_displaced_step_hw_singlestep (struct gdbarch *); |
| |
| /* 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); |
| |
| /* Identity functions on a CORE_ADDR. Just return the "addr". */ |
| |
| 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; |
| |
| /* No-op conversion of reg to regnum. */ |
| |
| extern int no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg); |
| |
| /* Do nothing version of coff_make_msymbol_special. */ |
| |
| void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym); |
| |
| /* Do nothing default implementation of gdbarch_make_symbol_special. */ |
| |
| void default_make_symbol_special (struct symbol *sym, struct objfile *objfile); |
| |
| /* Do nothing default implementation of gdbarch_adjust_dwarf2_addr. */ |
| |
| CORE_ADDR default_adjust_dwarf2_addr (CORE_ADDR pc); |
| |
| /* Do nothing default implementation of gdbarch_adjust_dwarf2_line. */ |
| |
| CORE_ADDR default_adjust_dwarf2_line (CORE_ADDR addr, int rel); |
| |
| /* Default DWARF vendor CFI handler. */ |
| |
| bool default_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdb_byte op, |
| struct dwarf2_frame_state *fs); |
| |
| /* Version of cannot_fetch_register() / cannot_store_register() that |
| always fails. */ |
| |
| int cannot_register_not (struct gdbarch *gdbarch, int regnum); |
| |
| /* 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. */ |
| |
| extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer; |
| |
| /* Default implementation of gdbarch_floatformat_for_type. */ |
| extern const struct floatformat ** |
| default_floatformat_for_type (struct gdbarch *gdbarch, |
| const char *name, int len); |
| |
| /* Default implementation of gdbarch_memtag_to_string. */ |
| extern std::string default_memtag_to_string (struct gdbarch *gdbarch, |
| struct value *tag); |
| |
| /* Default implementation of gdbarch_tagged_address_p. */ |
| bool default_tagged_address_p (struct gdbarch *gdbarch, struct value *address); |
| |
| /* Default implementation of gdbarch_memtag_matches_p. */ |
| extern bool default_memtag_matches_p (struct gdbarch *gdbarch, |
| struct value *address); |
| |
| /* Default implementation of gdbarch_set_memtags. */ |
| bool default_set_memtags (struct gdbarch *gdbarch, |
| struct value *address, size_t length, |
| const gdb::byte_vector &tags, |
| memtag_type tag_type); |
| |
| /* Default implementation of gdbarch_get_memtag. */ |
| struct value *default_get_memtag (struct gdbarch *gdbarch, |
| struct value *address, |
| memtag_type tag_type); |
| |
| extern CORE_ADDR generic_skip_trampoline_code (struct frame_info *frame, |
| CORE_ADDR pc); |
| |
| 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); |
| |
| extern int generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, |
| CORE_ADDR pc); |
| |
| extern int default_code_of_frame_writable (struct gdbarch *gdbarch, |
| struct frame_info *frame); |
| |
| /* By default, registers are not convertible. */ |
| extern int generic_convert_register_p (struct gdbarch *gdbarch, 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); |
| |
| int default_remote_register_number (struct gdbarch *gdbarch, |
| int regno); |
| |
| /* 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 (struct gdbarch *gdbarch, int regnum); |
| |
| /* Return the selected byte order, or BFD_ENDIAN_UNKNOWN if no byte |
| order was explicitly selected. */ |
| extern enum bfd_endian selected_byte_order (void); |
| |
| /* Return the selected architecture's name, or NULL if no architecture |
| was explicitly selected. */ |
| extern const char *selected_architecture_name (void); |
| |
| /* 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); |
| |
| /* Return the architecture for ABFD. If no suitable architecture |
| could be find, return NULL. */ |
| |
| extern struct gdbarch *gdbarch_from_bfd (bfd *abfd); |
| |
| /* 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. |
| |
| 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 int default_has_shared_address_space (struct gdbarch *); |
| |
| extern int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, |
| CORE_ADDR addr, std::string *msg); |
| |
| extern const gdb_byte *default_breakpoint_from_pc (struct gdbarch *gdbarch, |
| CORE_ADDR *pcptr, |
| int *lenptr); |
| |
| extern int default_breakpoint_kind_from_current_state (struct gdbarch *gdbarch, |
| struct regcache *regcache, |
| CORE_ADDR *pcptr); |
| |
| 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); |
| |
| /* Default implementation of gdbarch_program_breakpoint_here_p. */ |
| extern bool default_program_breakpoint_here_p (struct gdbarch *gdbarch, |
| CORE_ADDR 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 std::string 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 void default_guess_tracepoint_registers (struct gdbarch *gdbarch, |
| struct regcache *regcache, |
| CORE_ADDR addr); |
| |
| extern int default_print_insn (bfd_vma memaddr, disassemble_info *info); |
| |
| /* Wrapper to gdbarch_skip_prologue, but doesn't throw exception. Catch |
| exception thrown from gdbarch_skip_prologue, and return PC. */ |
| |
| extern CORE_ADDR gdbarch_skip_prologue_noexcept (gdbarch *gdbarch, |
| CORE_ADDR pc) noexcept; |
| |
| /* Default implementation of gdbarch_in_indirect_branch_thunk that returns |
| false. */ |
| extern bool default_in_indirect_branch_thunk (gdbarch *gdbarch, |
| CORE_ADDR pc); |
| |
| /* Default implementation of gdbarch type_align method. */ |
| extern ULONGEST default_type_align (struct gdbarch *gdbarch, |
| struct type *type); |
| |
| /* Default implementation of gdbarch get_pc_address_flags method. */ |
| extern std::string default_get_pc_address_flags (frame_info *frame, |
| CORE_ADDR pc); |
| |
| /* Default implementation of gdbarch read_core_file_mappings method. */ |
| extern void default_read_core_file_mappings (struct gdbarch *gdbarch, |
| struct bfd *cbfd, |
| gdb::function_view<void (ULONGEST count)> |
| pre_loop_cb, |
| gdb::function_view<void (int num, |
| ULONGEST start, |
| ULONGEST end, |
| ULONGEST file_ofs, |
| const char *filename)> |
| loop_cb); |
| #endif /* ARCH_UTILS_H */ |