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 2 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, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 #ifndef GDBARCH_UTILS_H
24 #define GDBARCH_UTILS_H
28 struct minimal_symbol
;
32 /* gdbarch trace variable */
33 extern int gdbarch_debug
;
35 /* An implementation of return_value that props up architectures still
36 using USE_STRUCT_RETURN, EXTRACT_RETURN_VALUE and
37 STORE_RETURN_VALUE. See also the hacks in "stack.c". */
38 enum return_value_convention
legacy_return_value (struct gdbarch
*gdbarch
,
40 struct regcache
*regcache
,
42 const gdb_byte
*writebuf
);
44 /* To return any structure or union type by value, store it at the
45 address passed as an invisible first argument to the function. */
46 extern gdbarch_deprecated_use_struct_convention_ftype always_use_struct_convention
;
48 /* Typical remote_translate_xfer_address */
49 extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address
;
51 /* The only possible cases for inner_than. */
52 extern int core_addr_lessthan (CORE_ADDR lhs
, CORE_ADDR rhs
);
53 extern int core_addr_greaterthan (CORE_ADDR lhs
, CORE_ADDR rhs
);
55 /* Floating point values. */
56 extern const struct floatformat
*default_float_format (struct gdbarch
*gdbarch
);
57 extern const struct floatformat
*default_double_format (struct gdbarch
*gdbarch
);
59 /* Identity functions on a CORE_ADDR. Just return the "addr". */
61 extern CORE_ADDR
core_addr_identity (CORE_ADDR addr
);
62 extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity
;
64 /* No-op conversion of reg to regnum. */
66 extern int no_op_reg_to_regnum (int reg
);
68 /* Do nothing version of elf_make_msymbol_special. */
70 void default_elf_make_msymbol_special (asymbol
*sym
, struct minimal_symbol
*msym
);
72 /* Do nothing version of coff_make_msymbol_special. */
74 void default_coff_make_msymbol_special (int val
, struct minimal_symbol
*msym
);
76 /* Version of cannot_fetch_register() / cannot_store_register() that
79 int cannot_register_not (int regnum
);
81 /* Legacy version of target_virtual_frame_pointer(). Assumes that
82 there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
85 extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer
;
87 extern CORE_ADDR
generic_skip_trampoline_code (CORE_ADDR pc
);
89 extern CORE_ADDR
generic_skip_solib_resolver (struct gdbarch
*gdbarch
,
92 extern int generic_in_solib_return_trampoline (CORE_ADDR pc
, char *name
);
94 extern int generic_in_function_epilogue_p (struct gdbarch
*gdbarch
, CORE_ADDR pc
);
96 /* Assume that the world is sane, a registers raw and virtual size
97 both match its type. */
99 extern int generic_register_size (int regnum
);
101 /* Assume that the world is sane, the registers are all adjacent. */
102 extern int generic_register_byte (int regnum
);
104 /* Prop up old targets that use various sigtramp macros. */
105 extern int legacy_pc_in_sigtramp (CORE_ADDR pc
, char *name
);
107 /* By default, registers are not convertible. */
108 extern int generic_convert_register_p (int regnum
, struct type
*type
);
110 extern int default_stabs_argument_has_addr (struct gdbarch
*gdbarch
,
113 extern int generic_instruction_nullified (struct gdbarch
*gdbarch
,
114 struct regcache
*regcache
);
116 /* For compatibility with older architectures, returns
117 (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid
120 extern int legacy_register_sim_regno (int regnum
);
122 /* Return the selected architecture's name, or NULL if no architecture
123 was explicitly selected. */
124 extern const char *selected_architecture_name (void);
126 /* Initialize a ``struct info''. Can't use memset(0) since some
127 default values are not zero. "fill" takes all available
128 information and fills in any unspecified fields. */
130 extern void gdbarch_info_init (struct gdbarch_info
*info
);
132 /* Similar to init, but this time fill in the blanks. Information is
133 obtained from the global "set ..." options and explicitly
134 initialized INFO fields. */
135 extern void gdbarch_info_fill (struct gdbarch_info
*info
);
137 /* Return the architecture for ABFD. If no suitable architecture
138 could be find, return NULL. */
140 extern struct gdbarch
*gdbarch_from_bfd (bfd
*abfd
);