X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Farch-utils.h;h=c1607d3fd9b8195c4392dea8060694dc7e2a97d9;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=6045ac0acc1b4eabb4dd6b53b89e762e2d78ea4d;hpb=3ca649544956e996656d40602064d9169949252b;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/arch-utils.h b/gdb/arch-utils.h index 6045ac0acc..c1607d3fd9 100644 --- a/gdb/arch-utils.h +++ b/gdb/arch-utils.h @@ -1,13 +1,12 @@ /* Dynamic architecture support for GDB, the GNU debugger. - Copyright 1998, 1999, 2000, 2002, 2003, 2004 Free Software - Foundation, Inc. + Copyright (C) 1998-2020 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, @@ -16,103 +15,143 @@ 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 . */ -#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; +struct dwarf2_frame_state; + +template +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 +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 + +#define BP_MANIPULATION_ENDIAN(BREAK_INSN_LITTLE, BREAK_INSN_BIG) \ + bp_manipulation_endian + +/* Default implementation of gdbarch_displaced_hw_singlestep. */ +extern int + default_displaced_step_hw_singlestep (struct gdbarch *, + struct displaced_step_copy_insn_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); -/* gdbarch trace variable */ -extern int gdbarch_debug; - -/* 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, - void *readbuf, - const void *writebuf); +/* Identity functions on a CORE_ADDR. Just return the "addr". */ -/* Implementation of extract return value that grubs around in the - register cache. */ -extern gdbarch_extract_return_value_ftype legacy_extract_return_value; +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 store return value that grubs the register cache. */ -extern gdbarch_store_return_value_ftype legacy_store_return_value; +/* No-op conversion of reg to regnum. */ -/* 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; +extern int no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg); -/* Typical remote_translate_xfer_address */ -extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address; +/* Do nothing version of coff_make_msymbol_special. */ -/* 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); +void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym); -/* Floating point values. */ -extern const struct floatformat *default_float_format (struct gdbarch *gdbarch); -extern const struct floatformat *default_double_format (struct gdbarch *gdbarch); +/* Do nothing default implementation of gdbarch_make_symbol_special. */ -/* Identity functions on a CORE_ADDR. Just return the "addr". */ +void default_make_symbol_special (struct symbol *sym, struct objfile *objfile); -extern CORE_ADDR core_addr_identity (CORE_ADDR addr); -extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity; +/* Do nothing default implementation of gdbarch_adjust_dwarf2_addr. */ -/* No-op conversion of reg to regnum. */ +CORE_ADDR default_adjust_dwarf2_addr (CORE_ADDR pc); -extern int no_op_reg_to_regnum (int reg); +/* Do nothing default implementation of gdbarch_adjust_dwarf2_line. */ -/* Do nothing version of elf_make_msymbol_special. */ +CORE_ADDR default_adjust_dwarf2_line (CORE_ADDR addr, int rel); -void default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym); +/* Default DWARF vendor CFI handler. */ -/* Do nothing version of coff_make_msymbol_special. */ - -void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym); +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. */ + always fails. */ -int cannot_register_not (int regnum); +int cannot_register_not (struct gdbarch *gdbarch, 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 + 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; -extern CORE_ADDR generic_skip_trampoline_code (CORE_ADDR pc); +/* Default implementation of gdbarch_floatformat_for_type. */ +extern const struct floatformat ** + default_floatformat_for_type (struct gdbarch *gdbarch, + const char *name, int len); + +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 (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_in_solib_return_trampoline (struct gdbarch *gdbarch, + CORE_ADDR pc, const char *name); -extern int generic_register_size (int regnum); +extern int generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, + CORE_ADDR pc); -/* 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); +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 (int regnum, struct type *type); +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); @@ -120,11 +159,14 @@ extern int default_stabs_argument_has_addr (struct gdbarch *gdbarch, 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 (int regnum); +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. */ @@ -139,18 +181,103 @@ extern const char *selected_architecture_name (void); information and fills in any unspecified fields. */ extern void gdbarch_info_init (struct gdbarch_info *info); -extern void gdbarch_info_fill (struct gdbarch *gdbarch, - struct gdbarch_info *info); /* Similar to init, but this time fill in the blanks. Information is - obtained from the specified architecture, global "set ..." options, - and explicitly initialized INFO fields. */ -extern void gdbarch_info_fill (struct gdbarch *gdbarch, - struct gdbarch_info *info); + 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); -#endif +/* 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); + +#endif /* ARCH_UTILS_H */