/* Dynamic architecture support for GDB, the GNU debugger.
- Copyright (C) 1998-2014 Free Software Foundation, Inc.
+ Copyright (C) 1998-2021 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, see <http://www.gnu.org/licenses/>. */
-#ifndef GDBARCH_UTILS_H
-#define GDBARCH_UTILS_H
+#ifndef ARCH_UTILS_H
+#define ARCH_UTILS_H
+
+#include "gdbarch.h"
-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);
+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 int
- default_displaced_step_hw_singlestep (struct gdbarch *,
- struct displaced_step_closure *);
+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,
extern int no_op_reg_to_regnum (struct gdbarch *gdbarch, 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);
+/* 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. */
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 int generic_in_solib_return_trampoline (struct gdbarch *gdbarch,
CORE_ADDR pc, const char *name);
-extern int generic_in_function_epilogue_p (struct gdbarch *gdbarch,
- CORE_ADDR pc);
+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,
extern int default_has_shared_address_space (struct gdbarch *);
extern int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch,
- CORE_ADDR addr,
- int *isize, char **msg);
+ CORE_ADDR addr, std::string *msg);
-extern void default_remote_breakpoint_from_pc (struct gdbarch *,
- CORE_ADDR *pcptr, int *kindptr);
+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,
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);
module determines whether a breakpoint is permanent. */
extern void default_skip_permanent_breakpoint (struct regcache *regcache);
-#endif
+/* 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 */
projects / thirdparty / binutils-gdb.git / blobdiff