1 /* Dynamic architecture support for GDB, the GNU debugger.
3 Copyright (C) 1998, 1999, 2000, 2002, 2003, 2004, 2007
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #ifndef GDBARCH_UTILS_H
22 #define GDBARCH_UTILS_H
26 struct minimal_symbol
;
30 /* gdbarch trace variable */
31 extern int gdbarch_debug
;
33 /* An implementation of return_value that props up architectures still
34 using USE_STRUCT_RETURN, gdbarch_extract_return_value and
35 store_return_value. See also the hacks in "stack.c". */
36 enum return_value_convention
legacy_return_value (struct gdbarch
*gdbarch
,
38 struct regcache
*regcache
,
40 const gdb_byte
*writebuf
);
42 /* To return any structure or union type by value, store it at the
43 address passed as an invisible first argument to the function. */
44 extern gdbarch_deprecated_use_struct_convention_ftype always_use_struct_convention
;
46 /* The only possible cases for inner_than. */
47 extern int core_addr_lessthan (CORE_ADDR lhs
, CORE_ADDR rhs
);
48 extern int core_addr_greaterthan (CORE_ADDR lhs
, CORE_ADDR rhs
);
50 /* Identity functions on a CORE_ADDR. Just return the "addr". */
52 extern CORE_ADDR
core_addr_identity (CORE_ADDR addr
);
53 extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity
;
55 /* No-op conversion of reg to regnum. */
57 extern int no_op_reg_to_regnum (int reg
);
59 /* Do nothing version of elf_make_msymbol_special. */
61 void default_elf_make_msymbol_special (asymbol
*sym
, struct minimal_symbol
*msym
);
63 /* Do nothing version of coff_make_msymbol_special. */
65 void default_coff_make_msymbol_special (int val
, struct minimal_symbol
*msym
);
67 /* Version of cannot_fetch_register() / cannot_store_register() that
70 int cannot_register_not (int regnum
);
72 /* Legacy version of target_virtual_frame_pointer(). Assumes that
73 there is an gdbarch_deprecated_fp_regnum and that it is the same, cooked or
76 extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer
;
78 extern CORE_ADDR
generic_skip_trampoline_code (struct frame_info
*frame
,
81 extern CORE_ADDR
generic_skip_solib_resolver (struct gdbarch
*gdbarch
,
84 extern int generic_in_solib_return_trampoline (CORE_ADDR pc
, char *name
);
86 extern int generic_in_function_epilogue_p (struct gdbarch
*gdbarch
, CORE_ADDR pc
);
88 /* By default, registers are not convertible. */
89 extern int generic_convert_register_p (int regnum
, struct type
*type
);
91 extern int default_stabs_argument_has_addr (struct gdbarch
*gdbarch
,
94 extern int generic_instruction_nullified (struct gdbarch
*gdbarch
,
95 struct regcache
*regcache
);
97 int default_remote_register_number (struct gdbarch
*gdbarch
,
100 /* For compatibility with older architectures, returns
101 (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid
104 extern int legacy_register_sim_regno (int regnum
);
106 /* Return the selected byte order, or BFD_ENDIAN_UNKNOWN if no byte
107 order was explicitly selected. */
108 extern enum bfd_endian
selected_byte_order (void);
110 /* Return the selected architecture's name, or NULL if no architecture
111 was explicitly selected. */
112 extern const char *selected_architecture_name (void);
114 /* Initialize a ``struct info''. Can't use memset(0) since some
115 default values are not zero. "fill" takes all available
116 information and fills in any unspecified fields. */
118 extern void gdbarch_info_init (struct gdbarch_info
*info
);
120 /* Similar to init, but this time fill in the blanks. Information is
121 obtained from the global "set ..." options and explicitly
122 initialized INFO fields. */
123 extern void gdbarch_info_fill (struct gdbarch_info
*info
);
125 /* Return the architecture for ABFD. If no suitable architecture
126 could be find, return NULL. */
128 extern struct gdbarch
*gdbarch_from_bfd (bfd
*abfd
);