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 /* Backward compatible call_dummy_words. */
  51 extern LONGEST legacy_call_dummy_words[];
  52 extern int legacy_sizeof_call_dummy_words;
  53
  54 /* Typical remote_translate_xfer_address */
  55 extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address;
  56
  57 /* Generic implementation of prologue_frameless_p.  Just calls
  58    SKIP_PROLOG and checks the return value to see if it actually
  59    changed. */
  60 extern gdbarch_prologue_frameless_p_ftype generic_prologue_frameless_p;
  61
  62 /* The only possible cases for inner_than. */
  63 extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs);
  64 extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs);
  65
  66 /* Floating point values. */
  67 extern const struct floatformat *default_float_format (struct gdbarch *gdbarch);
  68 extern const struct floatformat *default_double_format (struct gdbarch *gdbarch);
  69
  70 /* Helper function for targets that don't know how my arguments are
  71    being passed */
  72 extern int frame_num_args_unknown (struct frame_info *fi);
  73
  74
  75 /* The following DEPRECATED interfaces are for pre- multi-arch legacy
  76    targets. */
  77
  78 /* DEPRECATED pre- multi-arch interface.  Explicitly set the dynamic
  79    target-system-dependent parameters based on bfd_architecture and
  80    machine.  This function is deprecated, use
  81    set_gdbarch_from_arch_machine(). */
  82
  83 extern void set_architecture_from_arch_mach (enum bfd_architecture, unsigned long);
  84
  85 /* DEPRECATED pre- multi-arch interface.  Notify the target dependent
  86    backend of a change to the selected architecture. A zero return
  87    status indicates that the target did not like the change. */
  88
  89 extern int (*target_architecture_hook) (const struct bfd_arch_info *);
  90
  91
  92 /* Default raw->sim register re-numbering - does nothing. */
  93
  94 extern int default_register_sim_regno (int reg_nr);
  95
  96 /* Identity function on a CORE_ADDR.  Just returns its parameter.  */
  97
  98 extern CORE_ADDR core_addr_identity (CORE_ADDR addr);
  99
 100 /* No-op conversion of reg to regnum. */
 101
 102 extern int no_op_reg_to_regnum (int reg);
 103
 104 /* Default frame_args_address and frame_locals_address.  */
 105
 106 extern CORE_ADDR default_frame_address (struct frame_info *);
 107
 108 /* Default prepare_to_procced. */
 109
 110 extern int default_prepare_to_proceed (int select_it);
 111
 112 extern int generic_prepare_to_proceed (int select_it);
 113
 114 #endif