| 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 | extern CORE_ADDR generic_cannot_extract_struct_value_address (char *dummy); |
| 31 | |
| 32 | /* Helper function for targets that don't know how my arguments are |
| 33 | being passed */ |
| 34 | extern gdbarch_frame_num_args_ftype frame_num_args_unknown; |
| 35 | |
| 36 | /* Implementation of breakpoint from PC using any of the deprecated |
| 37 | macros BREAKPOINT, LITTLE_BREAKPOINT, BIG_BREAPOINT. For legacy |
| 38 | targets that don't yet implement their own breakpoint_from_pc(). */ |
| 39 | extern gdbarch_breakpoint_from_pc_ftype legacy_breakpoint_from_pc; |
| 40 | |
| 41 | /* Frameless functions not identifable. */ |
| 42 | extern gdbarch_frameless_function_invocation_ftype generic_frameless_function_invocation_not; |
| 43 | |
| 44 | /* Only structures, unions, and arrays are returned using the struct |
| 45 | convention. Note that arrays are never passed by value in the C |
| 46 | language family, so that case is irrelevant for C. */ |
| 47 | extern gdbarch_return_value_on_stack_ftype generic_return_value_on_stack_not; |
| 48 | |
| 49 | /* Map onto old REGISTER_NAMES. */ |
| 50 | extern char *legacy_register_name (int i); |
| 51 | |
| 52 | /* Accessor for old global function pointer for disassembly. */ |
| 53 | extern int legacy_print_insn (bfd_vma vma, disassemble_info *info); |
| 54 | |
| 55 | /* Backward compatible call_dummy_words. */ |
| 56 | extern LONGEST legacy_call_dummy_words[]; |
| 57 | extern int legacy_sizeof_call_dummy_words; |
| 58 | |
| 59 | /* Typical remote_translate_xfer_address */ |
| 60 | extern gdbarch_remote_translate_xfer_address_ftype generic_remote_translate_xfer_address; |
| 61 | |
| 62 | /* Generic implementation of prologue_frameless_p. Just calls |
| 63 | SKIP_PROLOG and checks the return value to see if it actually |
| 64 | changed. */ |
| 65 | extern gdbarch_prologue_frameless_p_ftype generic_prologue_frameless_p; |
| 66 | |
| 67 | /* The only possible cases for inner_than. */ |
| 68 | extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs); |
| 69 | extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs); |
| 70 | |
| 71 | /* Floating point values. */ |
| 72 | extern const struct floatformat *default_float_format (struct gdbarch *gdbarch); |
| 73 | extern const struct floatformat *default_double_format (struct gdbarch *gdbarch); |
| 74 | |
| 75 | /* Helper function for targets that don't know how my arguments are |
| 76 | being passed */ |
| 77 | extern int frame_num_args_unknown (struct frame_info *fi); |
| 78 | |
| 79 | |
| 80 | /* The following DEPRECATED interfaces are for pre- multi-arch legacy |
| 81 | targets. */ |
| 82 | |
| 83 | /* DEPRECATED pre- multi-arch interface. Explicitly set the dynamic |
| 84 | target-system-dependent parameters based on bfd_architecture and |
| 85 | machine. This function is deprecated, use |
| 86 | set_gdbarch_from_arch_machine(). */ |
| 87 | |
| 88 | extern void set_architecture_from_arch_mach (enum bfd_architecture, unsigned long); |
| 89 | |
| 90 | /* DEPRECATED pre- multi-arch interface. Notify the target dependent |
| 91 | backend of a change to the selected architecture. A zero return |
| 92 | status indicates that the target did not like the change. */ |
| 93 | |
| 94 | extern int (*target_architecture_hook) (const struct bfd_arch_info *); |
| 95 | |
| 96 | |
| 97 | /* Default raw->sim register re-numbering - does nothing. */ |
| 98 | |
| 99 | extern int default_register_sim_regno (int reg_nr); |
| 100 | |
| 101 | /* Identity function on a CORE_ADDR. Just returns its parameter. */ |
| 102 | |
| 103 | extern CORE_ADDR core_addr_identity (CORE_ADDR addr); |
| 104 | |
| 105 | /* No-op conversion of reg to regnum. */ |
| 106 | |
| 107 | extern int no_op_reg_to_regnum (int reg); |
| 108 | |
| 109 | /* Default frame_args_address and frame_locals_address. */ |
| 110 | |
| 111 | extern CORE_ADDR default_frame_address (struct frame_info *); |
| 112 | |
| 113 | /* Default prepare_to_procced. */ |
| 114 | |
| 115 | extern int default_prepare_to_proceed (int select_it); |
| 116 | |
| 117 | extern int generic_prepare_to_proceed (int select_it); |
| 118 | |
| 119 | /* Versions of init_frame_pc(). Do nothing; do the default. */ |
| 120 | |
| 121 | void init_frame_pc_noop (int fromleaf, struct frame_info *prev); |
| 122 | |
| 123 | void init_frame_pc_default (int fromleaf, struct frame_info *prev); |
| 124 | |
| 125 | /* Version of cannot_fetch_register() / cannot_store_register() that |
| 126 | always fails. */ |
| 127 | |
| 128 | int cannot_register_not (int regnum); |
| 129 | |
| 130 | /* Legacy version of target_virtual_frame_pointer(). Assumes that |
| 131 | there is an FP_REGNUM and that it is the same, cooked or raw. */ |
| 132 | |
| 133 | extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer; |
| 134 | |
| 135 | extern CORE_ADDR generic_skip_trampoline_code (CORE_ADDR pc); |
| 136 | |
| 137 | extern int generic_in_solib_call_trampoline (CORE_ADDR pc, char *name); |
| 138 | |
| 139 | extern int generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc); |
| 140 | |
| 141 | /* Assume all registers are the same size and a size identical to that |
| 142 | of the integer type. */ |
| 143 | extern int generic_register_raw_size (int regnum); |
| 144 | |
| 145 | /* Assume the virtual size of registers corresponds to the virtual type. */ |
| 146 | |
| 147 | extern int generic_register_virtual_size (int regnum); |
| 148 | |
| 149 | /* Initialize a ``struct info''. Can't use memset(0) since some |
| 150 | default values are not zero. */ |
| 151 | extern void gdbarch_info_init (struct gdbarch_info *info); |
| 152 | |
| 153 | #endif |