| 1 | /* Default child (native) target interface, for GDB when running under |
| 2 | Unix. |
| 3 | |
| 4 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 5 | 1998, 1999, 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 22 | Boston, MA 02110-1301, USA. */ |
| 23 | |
| 24 | #include "defs.h" |
| 25 | #include "regcache.h" |
| 26 | #include "memattr.h" |
| 27 | #include "symtab.h" |
| 28 | #include "target.h" |
| 29 | #include "inferior.h" |
| 30 | #include "gdb_string.h" |
| 31 | |
| 32 | /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this |
| 33 | for all registers. */ |
| 34 | |
| 35 | static void |
| 36 | inf_child_fetch_inferior_registers (int regnum) |
| 37 | { |
| 38 | if (regnum == -1) |
| 39 | { |
| 40 | for (regnum = 0; regnum < NUM_REGS; regnum++) |
| 41 | regcache_raw_supply (current_regcache, regnum, NULL); |
| 42 | } |
| 43 | else |
| 44 | regcache_raw_supply (current_regcache, regnum, NULL); |
| 45 | } |
| 46 | |
| 47 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do |
| 48 | this for all registers (including the floating point registers). */ |
| 49 | |
| 50 | static void |
| 51 | inf_child_store_inferior_registers (int regnum) |
| 52 | { |
| 53 | } |
| 54 | |
| 55 | static void |
| 56 | inf_child_post_attach (int pid) |
| 57 | { |
| 58 | /* This version of Unix doesn't require a meaningful "post attach" |
| 59 | operation by a debugger. */ |
| 60 | } |
| 61 | |
| 62 | /* Get ready to modify the registers array. On machines which store |
| 63 | individual registers, this doesn't need to do anything. On |
| 64 | machines which store all the registers in one fell swoop, this |
| 65 | makes sure that registers contains all the registers from the |
| 66 | program being debugged. */ |
| 67 | |
| 68 | static void |
| 69 | inf_child_prepare_to_store (void) |
| 70 | { |
| 71 | } |
| 72 | |
| 73 | static void |
| 74 | inf_child_open (char *arg, int from_tty) |
| 75 | { |
| 76 | error (_("Use the \"run\" command to start a Unix child process.")); |
| 77 | } |
| 78 | |
| 79 | static void |
| 80 | inf_child_post_startup_inferior (ptid_t ptid) |
| 81 | { |
| 82 | /* This version of Unix doesn't require a meaningful "post startup |
| 83 | inferior" operation by a debugger. */ |
| 84 | } |
| 85 | |
| 86 | static void |
| 87 | inf_child_acknowledge_created_inferior (int pid) |
| 88 | { |
| 89 | /* This version of Unix doesn't require a meaningful "acknowledge |
| 90 | created inferior" operation by a debugger. */ |
| 91 | } |
| 92 | |
| 93 | static void |
| 94 | inf_child_insert_fork_catchpoint (int pid) |
| 95 | { |
| 96 | /* This version of Unix doesn't support notification of fork |
| 97 | events. */ |
| 98 | } |
| 99 | |
| 100 | static int |
| 101 | inf_child_remove_fork_catchpoint (int pid) |
| 102 | { |
| 103 | /* This version of Unix doesn't support notification of fork |
| 104 | events. */ |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | static void |
| 109 | inf_child_insert_vfork_catchpoint (int pid) |
| 110 | { |
| 111 | /* This version of Unix doesn't support notification of vfork |
| 112 | events. */ |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | inf_child_remove_vfork_catchpoint (int pid) |
| 117 | { |
| 118 | /* This version of Unix doesn't support notification of vfork |
| 119 | events. */ |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | static int |
| 124 | inf_child_follow_fork (struct target_ops *ops, int follow_child) |
| 125 | { |
| 126 | /* This version of Unix doesn't support following fork or vfork |
| 127 | events. */ |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static void |
| 132 | inf_child_insert_exec_catchpoint (int pid) |
| 133 | { |
| 134 | /* This version of Unix doesn't support notification of exec |
| 135 | events. */ |
| 136 | } |
| 137 | |
| 138 | static int |
| 139 | inf_child_remove_exec_catchpoint (int pid) |
| 140 | { |
| 141 | /* This version of Unix doesn't support notification of exec |
| 142 | events. */ |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | static int |
| 147 | inf_child_reported_exec_events_per_exec_call (void) |
| 148 | { |
| 149 | /* This version of Unix doesn't support notification of exec |
| 150 | events. */ |
| 151 | return 1; |
| 152 | } |
| 153 | |
| 154 | static int |
| 155 | inf_child_can_run (void) |
| 156 | { |
| 157 | return 1; |
| 158 | } |
| 159 | |
| 160 | static struct symtab_and_line * |
| 161 | inf_child_enable_exception_callback (enum exception_event_kind kind, |
| 162 | int enable) |
| 163 | { |
| 164 | return (struct symtab_and_line *) NULL; |
| 165 | } |
| 166 | |
| 167 | static struct exception_event_record * |
| 168 | inf_child_get_current_exception_event (void) |
| 169 | { |
| 170 | return (struct exception_event_record *) NULL; |
| 171 | } |
| 172 | |
| 173 | static char * |
| 174 | inf_child_pid_to_exec_file (int pid) |
| 175 | { |
| 176 | /* This version of Unix doesn't support translation of a process ID |
| 177 | to the filename of the executable file. */ |
| 178 | return NULL; |
| 179 | } |
| 180 | |
| 181 | struct target_ops * |
| 182 | inf_child_target (void) |
| 183 | { |
| 184 | struct target_ops *t = XZALLOC (struct target_ops); |
| 185 | t->to_shortname = "child"; |
| 186 | t->to_longname = "Unix child process"; |
| 187 | t->to_doc = "Unix child process (started by the \"run\" command)."; |
| 188 | t->to_open = inf_child_open; |
| 189 | t->to_post_attach = inf_child_post_attach; |
| 190 | t->to_fetch_registers = inf_child_fetch_inferior_registers; |
| 191 | t->to_store_registers = inf_child_store_inferior_registers; |
| 192 | t->to_prepare_to_store = inf_child_prepare_to_store; |
| 193 | t->to_insert_breakpoint = memory_insert_breakpoint; |
| 194 | t->to_remove_breakpoint = memory_remove_breakpoint; |
| 195 | t->to_terminal_init = terminal_init_inferior; |
| 196 | t->to_terminal_inferior = terminal_inferior; |
| 197 | t->to_terminal_ours_for_output = terminal_ours_for_output; |
| 198 | t->to_terminal_save_ours = terminal_save_ours; |
| 199 | t->to_terminal_ours = terminal_ours; |
| 200 | t->to_terminal_info = child_terminal_info; |
| 201 | t->to_post_startup_inferior = inf_child_post_startup_inferior; |
| 202 | t->to_acknowledge_created_inferior = inf_child_acknowledge_created_inferior; |
| 203 | t->to_insert_fork_catchpoint = inf_child_insert_fork_catchpoint; |
| 204 | t->to_remove_fork_catchpoint = inf_child_remove_fork_catchpoint; |
| 205 | t->to_insert_vfork_catchpoint = inf_child_insert_vfork_catchpoint; |
| 206 | t->to_remove_vfork_catchpoint = inf_child_remove_vfork_catchpoint; |
| 207 | t->to_follow_fork = inf_child_follow_fork; |
| 208 | t->to_insert_exec_catchpoint = inf_child_insert_exec_catchpoint; |
| 209 | t->to_remove_exec_catchpoint = inf_child_remove_exec_catchpoint; |
| 210 | t->to_reported_exec_events_per_exec_call = |
| 211 | inf_child_reported_exec_events_per_exec_call; |
| 212 | t->to_can_run = inf_child_can_run; |
| 213 | t->to_enable_exception_callback = inf_child_enable_exception_callback; |
| 214 | t->to_get_current_exception_event = inf_child_get_current_exception_event; |
| 215 | t->to_pid_to_exec_file = inf_child_pid_to_exec_file; |
| 216 | t->to_stratum = process_stratum; |
| 217 | t->to_has_all_memory = 1; |
| 218 | t->to_has_memory = 1; |
| 219 | t->to_has_stack = 1; |
| 220 | t->to_has_registers = 1; |
| 221 | t->to_has_execution = 1; |
| 222 | t->to_magic = OPS_MAGIC; |
| 223 | return t; |
| 224 | } |