| 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1998, 1999, 2000, 2002, 2003, 2004 Free Software |
| 4 | Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 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. |
| 12 | |
| 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. |
| 17 | |
| 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. */ |
| 22 | |
| 23 | #ifndef GDBARCH_UTILS_H |
| 24 | #define GDBARCH_UTILS_H |
| 25 | |
| 26 | struct gdbarch; |
| 27 | struct frame_info; |
| 28 | struct minimal_symbol; |
| 29 | struct type; |
| 30 | struct gdbarch_info; |
| 31 | |
| 32 | /* gdbarch trace variable */ |
| 33 | extern int gdbarch_debug; |
| 34 | |
| 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, |
| 39 | struct type *valtype, |
| 40 | struct regcache *regcache, |
| 41 | gdb_byte *readbuf, |
| 42 | const gdb_byte *writebuf); |
| 43 | |
| 44 | /* Implementation of extract return value that grubs around in the |
| 45 | register cache. */ |
| 46 | extern gdbarch_extract_return_value_ftype legacy_extract_return_value; |
| 47 | |
| 48 | /* Implementation of store return value that grubs the register cache. */ |
| 49 | extern gdbarch_store_return_value_ftype legacy_store_return_value; |
| 50 | |
| 51 | /* To return any structure or union type by value, store it at the |
| 52 | address passed as an invisible first argument to the function. */ |
| 53 | extern gdbarch_deprecated_use_struct_convention_ftype always_use_struct_convention; |
| 54 | |
| 55 | /* Typical remote_translate_xfer_address */ |
| 56 | extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address; |
| 57 | |
| 58 | /* The only possible cases for inner_than. */ |
| 59 | extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs); |
| 60 | extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs); |
| 61 | |
| 62 | /* Floating point values. */ |
| 63 | extern const struct floatformat *default_float_format (struct gdbarch *gdbarch); |
| 64 | extern const struct floatformat *default_double_format (struct gdbarch *gdbarch); |
| 65 | |
| 66 | /* Identity functions on a CORE_ADDR. Just return the "addr". */ |
| 67 | |
| 68 | extern CORE_ADDR core_addr_identity (CORE_ADDR addr); |
| 69 | extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity; |
| 70 | |
| 71 | /* No-op conversion of reg to regnum. */ |
| 72 | |
| 73 | extern int no_op_reg_to_regnum (int reg); |
| 74 | |
| 75 | /* Do nothing version of elf_make_msymbol_special. */ |
| 76 | |
| 77 | void default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym); |
| 78 | |
| 79 | /* Do nothing version of coff_make_msymbol_special. */ |
| 80 | |
| 81 | void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym); |
| 82 | |
| 83 | /* Version of cannot_fetch_register() / cannot_store_register() that |
| 84 | always fails. */ |
| 85 | |
| 86 | int cannot_register_not (int regnum); |
| 87 | |
| 88 | /* Legacy version of target_virtual_frame_pointer(). Assumes that |
| 89 | there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or |
| 90 | raw. */ |
| 91 | |
| 92 | extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer; |
| 93 | |
| 94 | extern CORE_ADDR generic_skip_trampoline_code (CORE_ADDR pc); |
| 95 | |
| 96 | extern CORE_ADDR generic_skip_solib_resolver (struct gdbarch *gdbarch, |
| 97 | CORE_ADDR pc); |
| 98 | |
| 99 | extern int generic_in_solib_return_trampoline (CORE_ADDR pc, char *name); |
| 100 | |
| 101 | extern int generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc); |
| 102 | |
| 103 | /* Assume that the world is sane, a registers raw and virtual size |
| 104 | both match its type. */ |
| 105 | |
| 106 | extern int generic_register_size (int regnum); |
| 107 | |
| 108 | /* Assume that the world is sane, the registers are all adjacent. */ |
| 109 | extern int generic_register_byte (int regnum); |
| 110 | |
| 111 | /* Prop up old targets that use various sigtramp macros. */ |
| 112 | extern int legacy_pc_in_sigtramp (CORE_ADDR pc, char *name); |
| 113 | |
| 114 | /* By default, registers are not convertible. */ |
| 115 | extern int generic_convert_register_p (int regnum, struct type *type); |
| 116 | |
| 117 | extern int default_stabs_argument_has_addr (struct gdbarch *gdbarch, |
| 118 | struct type *type); |
| 119 | |
| 120 | extern int generic_instruction_nullified (struct gdbarch *gdbarch, |
| 121 | struct regcache *regcache); |
| 122 | |
| 123 | /* For compatibility with older architectures, returns |
| 124 | (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid |
| 125 | name. */ |
| 126 | |
| 127 | extern int legacy_register_sim_regno (int regnum); |
| 128 | |
| 129 | /* Return the selected byte order, or BFD_ENDIAN_UNKNOWN if no byte |
| 130 | order was explicitly selected. */ |
| 131 | extern enum bfd_endian selected_byte_order (void); |
| 132 | |
| 133 | /* Return the selected architecture's name, or NULL if no architecture |
| 134 | was explicitly selected. */ |
| 135 | extern const char *selected_architecture_name (void); |
| 136 | |
| 137 | /* Initialize a ``struct info''. Can't use memset(0) since some |
| 138 | default values are not zero. "fill" takes all available |
| 139 | information and fills in any unspecified fields. */ |
| 140 | |
| 141 | extern void gdbarch_info_init (struct gdbarch_info *info); |
| 142 | extern void gdbarch_info_fill (struct gdbarch *gdbarch, |
| 143 | struct gdbarch_info *info); |
| 144 | |
| 145 | /* Similar to init, but this time fill in the blanks. Information is |
| 146 | obtained from the specified architecture, global "set ..." options, |
| 147 | and explicitly initialized INFO fields. */ |
| 148 | extern void gdbarch_info_fill (struct gdbarch *gdbarch, |
| 149 | struct gdbarch_info *info); |
| 150 | |
| 151 | /* Return the architecture for ABFD. If no suitable architecture |
| 152 | could be find, return NULL. */ |
| 153 | |
| 154 | extern struct gdbarch *gdbarch_from_bfd (bfd *abfd); |
| 155 | |
| 156 | #endif |