1 /* Dynamic architecture support for GDB, the GNU debugger.
2 Copyright 1998-2000, Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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. */
21 #ifndef GDBARCH_UTILS_H
22 #define GDBARCH_UTILS_H
24 /* gdbarch trace variable */
25 extern int gdbarch_debug;
27 /* Fallback for register convertible. */
28 extern gdbarch_register_convertible_ftype generic_register_convertible_not;
30 /* Helper function for targets that don't know how my arguments are
32 extern gdbarch_frame_num_args_ftype frame_num_args_unknown;
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;
39 /* Frameless functions not identifable. */
40 extern gdbarch_frameless_function_invocation_ftype generic_frameless_function_invocation_not;
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;
47 /* Map onto old REGISTER_NAMES. */
48 extern char *legacy_register_name (int i);
50 /* Backward compatible call_dummy_words. */
51 extern LONGEST legacy_call_dummy_words[];
52 extern int legacy_sizeof_call_dummy_words;
54 /* Typical remote_translate_xfer_address */
55 extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address;
57 /* Generic implementation of prologue_frameless_p. Just calls
58 SKIP_PROLOG and checks the return value to see if it actually
60 extern gdbarch_prologue_frameless_p_ftype generic_prologue_frameless_p;
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);
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);
70 /* Helper function for targets that don't know how my arguments are
72 extern int frame_num_args_unknown (struct frame_info *fi);
75 /* The following DEPRECATED interfaces are for pre- multi-arch legacy
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(). */
83 extern void set_architecture_from_arch_mach (enum bfd_architecture, unsigned long);
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. */
89 extern int (*target_architecture_hook) (const struct bfd_arch_info *);
92 /* Default raw->sim register re-numbering - does nothing. */
94 extern int default_register_sim_regno (int reg_nr);
96 /* Default conversion of function pointer address - returns address. */
98 extern CORE_ADDR default_convert_from_func_ptr_addr (CORE_ADDR addr);
100 /* No-op conversion of reg to regnum. */
102 extern int no_op_reg_to_regnum (int reg);
104 /* Default frame_args_address and frame_locals_address. */
106 extern CORE_ADDR default_frame_address (struct frame_info *);