gdb/arch-utils.h

   1 /* Dynamic architecture support for GDB, the GNU debugger.
   2    Copyright 1998, 1999, 2000 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef GDBARCH_UTILS_H
  22 #define GDBARCH_UTILS_H
  23
  24 /* gdbarch trace variable */
  25 extern int gdbarch_debug;
  26
  27 /* Fallback for register convertible. */
  28 extern gdbarch_register_convertible_ftype generic_register_convertible_not;
  29
  30 /* Helper function for targets that don't know how my arguments are
  31    being passed */
  32 extern gdbarch_frame_num_args_ftype frame_num_args_unknown;
  33
  34 /* Implementation of breakpoint from PC using any of the deprecated
  35    macros BREAKPOINT, LITTLE_BREAKPOINT, BIG_BREAPOINT.  For legacy
  36    targets that don't yet implement their own breakpoint_from_pc(). */
  37 extern gdbarch_breakpoint_from_pc_ftype legacy_breakpoint_from_pc;
  38
  39 /* Frameless functions not identifable. */
  40 extern gdbarch_frameless_function_invocation_ftype generic_frameless_function_invocation_not;
  41
  42 /* Only structures, unions, and arrays are returned using the struct
  43    convention.  Note that arrays are never passed by value in the C
  44    language family, so that case is irrelevant for C.  */
  45 extern gdbarch_return_value_on_stack_ftype generic_return_value_on_stack_not;
  46
  47 /* Map onto old REGISTER_NAMES. */
  48 extern char *legacy_register_name (int i);
  49
  50 /* Accessor for old global function pointer for disassembly. */
  51 extern int legacy_print_insn (bfd_vma vma, disassemble_info *info);
  52
  53 /* Backward compatible call_dummy_words. */
  54 extern LONGEST legacy_call_dummy_words[];
  55 extern int legacy_sizeof_call_dummy_words;
  56
  57 /* Typical remote_translate_xfer_address */
  58 extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address;
  59
  60 /* Generic implementation of prologue_frameless_p.  Just calls
  61    SKIP_PROLOG and checks the return value to see if it actually
  62    changed. */
  63 extern gdbarch_prologue_frameless_p_ftype generic_prologue_frameless_p;
  64
  65 /* The only possible cases for inner_than. */
  66 extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs);
  67 extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs);
  68
  69 /* Floating point values. */
  70 extern const struct floatformat *default_float_format (struct gdbarch *gdbarch);
  71 extern const struct floatformat *default_double_format (struct gdbarch *gdbarch);
  72
  73 /* Helper function for targets that don't know how my arguments are
  74    being passed */
  75 extern int frame_num_args_unknown (struct frame_info *fi);
  76
  77
  78 /* The following DEPRECATED interfaces are for pre- multi-arch legacy
  79    targets. */
  80
  81 /* DEPRECATED pre- multi-arch interface.  Explicitly set the dynamic
  82    target-system-dependent parameters based on bfd_architecture and
  83    machine.  This function is deprecated, use
  84    set_gdbarch_from_arch_machine(). */
  85
  86 extern void set_architecture_from_arch_mach (enum bfd_architecture, unsigned long);
  87
  88 /* DEPRECATED pre- multi-arch interface.  Notify the target dependent
  89    backend of a change to the selected architecture. A zero return
  90    status indicates that the target did not like the change. */
  91
  92 extern int (*target_architecture_hook) (const struct bfd_arch_info *);
  93
  94
  95 /* Default raw->sim register re-numbering - does nothing. */
  96
  97 extern int default_register_sim_regno (int reg_nr);
  98
  99 /* Identity function on a CORE_ADDR.  Just returns its parameter.  */
 100
 101 extern CORE_ADDR core_addr_identity (CORE_ADDR addr);
 102
 103 /* No-op conversion of reg to regnum. */
 104
 105 extern int no_op_reg_to_regnum (int reg);
 106
 107 /* Default frame_args_address and frame_locals_address.  */
 108
 109 extern CORE_ADDR default_frame_address (struct frame_info *);
 110
 111 /* Default prepare_to_procced. */
 112
 113 extern int default_prepare_to_proceed (int select_it);
 114
 115 extern int generic_prepare_to_proceed (int select_it);
 116
 117 /* Versions of init_frame_pc().  Do nothing; do the default. */
 118
 119 void init_frame_pc_noop (int fromleaf, struct frame_info *prev);
 120
 121 void init_frame_pc_default (int fromleaf, struct frame_info *prev);
 122
 123 /* Version of cannot_fetch_register() / cannot_store_register() that
 124    always fails. */
 125
 126 int cannot_register_not (int regnum);
 127
 128 /* Legacy version of target_virtual_frame_pointer().  Assumes that
 129    there is an FP_REGNUM and that it is the same, cooked or raw.  */
 130
 131 extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer;
 132
 133 extern CORE_ADDR generic_skip_trampoline_code (CORE_ADDR pc);
 134
 135 extern int generic_in_solib_call_trampoline (CORE_ADDR pc, char *name);
 136
 137 extern int generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc);
 138
 139 #endif