| 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
| 2 | Copyright 1998-1999, 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 | #include "defs.h" |
| 22 | |
| 23 | #if GDB_MULTI_ARCH |
| 24 | #include "gdbcmd.h" |
| 25 | #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */ |
| 26 | #else |
| 27 | /* Just include everything in sight so that the every old definition |
| 28 | of macro is visible. */ |
| 29 | #include "gdb_string.h" |
| 30 | #include <ctype.h> |
| 31 | #include "symtab.h" |
| 32 | #include "frame.h" |
| 33 | #include "inferior.h" |
| 34 | #include "breakpoint.h" |
| 35 | #include "gdb_wait.h" |
| 36 | #include "gdbcore.h" |
| 37 | #include "gdbcmd.h" |
| 38 | #include "target.h" |
| 39 | #include "gdbthread.h" |
| 40 | #include "annotate.h" |
| 41 | #include "symfile.h" /* for overlay functions */ |
| 42 | #endif |
| 43 | |
| 44 | /* Convenience macro for allocting typesafe memory. */ |
| 45 | |
| 46 | #ifndef XMALLOC |
| 47 | #define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE)) |
| 48 | #endif |
| 49 | |
| 50 | |
| 51 | /* Use the program counter to determine the contents and size |
| 52 | of a breakpoint instruction. If no target-dependent macro |
| 53 | BREAKPOINT_FROM_PC has been defined to implement this function, |
| 54 | assume that the breakpoint doesn't depend on the PC, and |
| 55 | use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros. |
| 56 | Return a pointer to a string of bytes that encode a breakpoint |
| 57 | instruction, stores the length of the string to *lenptr, |
| 58 | and optionally adjust the pc to point to the correct memory location |
| 59 | for inserting the breakpoint. */ |
| 60 | |
| 61 | unsigned char * |
| 62 | legacy_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr) |
| 63 | { |
| 64 | /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a |
| 65 | breakpoint. On some machines, breakpoints are handled by the |
| 66 | target environment and we don't have to worry about them here. */ |
| 67 | #ifdef BIG_BREAKPOINT |
| 68 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) |
| 69 | { |
| 70 | static unsigned char big_break_insn[] = BIG_BREAKPOINT; |
| 71 | *lenptr = sizeof (big_break_insn); |
| 72 | return big_break_insn; |
| 73 | } |
| 74 | #endif |
| 75 | #ifdef LITTLE_BREAKPOINT |
| 76 | if (TARGET_BYTE_ORDER != BIG_ENDIAN) |
| 77 | { |
| 78 | static unsigned char little_break_insn[] = LITTLE_BREAKPOINT; |
| 79 | *lenptr = sizeof (little_break_insn); |
| 80 | return little_break_insn; |
| 81 | } |
| 82 | #endif |
| 83 | #ifdef BREAKPOINT |
| 84 | { |
| 85 | static unsigned char break_insn[] = BREAKPOINT; |
| 86 | *lenptr = sizeof (break_insn); |
| 87 | return break_insn; |
| 88 | } |
| 89 | #endif |
| 90 | *lenptr = 0; |
| 91 | return NULL; |
| 92 | } |
| 93 | |
| 94 | int |
| 95 | generic_frameless_function_invocation_not (struct frame_info *fi) |
| 96 | { |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | int |
| 101 | generic_return_value_on_stack_not (struct type *type) |
| 102 | { |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | char * |
| 107 | legacy_register_name (int i) |
| 108 | { |
| 109 | #ifdef REGISTER_NAMES |
| 110 | static char *names[] = REGISTER_NAMES; |
| 111 | if (i < 0 || i >= (sizeof (names) / sizeof (*names))) |
| 112 | return NULL; |
| 113 | else |
| 114 | return names[i]; |
| 115 | #else |
| 116 | internal_error ("legacy_register_name: called."); |
| 117 | return NULL; |
| 118 | #endif |
| 119 | } |
| 120 | |
| 121 | #if defined (CALL_DUMMY) |
| 122 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; |
| 123 | #else |
| 124 | LONGEST legacy_call_dummy_words[1]; |
| 125 | #endif |
| 126 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); |
| 127 | |
| 128 | void |
| 129 | generic_remote_translate_xfer_address (CORE_ADDR gdb_addr, int gdb_len, |
| 130 | CORE_ADDR * rem_addr, int *rem_len) |
| 131 | { |
| 132 | *rem_addr = gdb_addr; |
| 133 | *rem_len = gdb_len; |
| 134 | } |
| 135 | |
| 136 | int |
| 137 | generic_prologue_frameless_p (CORE_ADDR ip) |
| 138 | { |
| 139 | #ifdef SKIP_PROLOGUE_FRAMELESS_P |
| 140 | return ip == SKIP_PROLOGUE_FRAMELESS_P (ip); |
| 141 | #else |
| 142 | return ip == SKIP_PROLOGUE (ip); |
| 143 | #endif |
| 144 | } |
| 145 | |
| 146 | |
| 147 | /* Helper functions for INNER_THAN */ |
| 148 | |
| 149 | int |
| 150 | core_addr_lessthan (lhs, rhs) |
| 151 | CORE_ADDR lhs; |
| 152 | CORE_ADDR rhs; |
| 153 | { |
| 154 | return (lhs < rhs); |
| 155 | } |
| 156 | |
| 157 | int |
| 158 | core_addr_greaterthan (lhs, rhs) |
| 159 | CORE_ADDR lhs; |
| 160 | CORE_ADDR rhs; |
| 161 | { |
| 162 | return (lhs > rhs); |
| 163 | } |
| 164 | |
| 165 | |
| 166 | /* */ |
| 167 | |
| 168 | extern initialize_file_ftype __initialize_gdbarch_utils; |
| 169 | |
| 170 | void |
| 171 | __initialize_gdbarch_utils (void) |
| 172 | { |
| 173 | } |