| 1 | /* Target operations for the remote server for GDB. |
| 2 | Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009, 2010 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by MontaVista Software. |
| 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "server.h" |
| 23 | |
| 24 | struct target_ops *the_target; |
| 25 | |
| 26 | void |
| 27 | set_desired_inferior (int use_general) |
| 28 | { |
| 29 | struct thread_info *found; |
| 30 | |
| 31 | if (use_general == 1) |
| 32 | found = find_thread_ptid (general_thread); |
| 33 | else |
| 34 | { |
| 35 | found = NULL; |
| 36 | |
| 37 | /* If we are continuing any (all) thread(s), use step_thread |
| 38 | to decide which thread to step and/or send the specified |
| 39 | signal to. */ |
| 40 | if ((!ptid_equal (step_thread, null_ptid) |
| 41 | && !ptid_equal (step_thread, minus_one_ptid)) |
| 42 | && (ptid_equal (cont_thread, null_ptid) |
| 43 | || ptid_equal (cont_thread, minus_one_ptid))) |
| 44 | found = find_thread_ptid (step_thread); |
| 45 | |
| 46 | if (found == NULL) |
| 47 | found = find_thread_ptid (cont_thread); |
| 48 | } |
| 49 | |
| 50 | if (found == NULL) |
| 51 | current_inferior = (struct thread_info *) all_threads.head; |
| 52 | else |
| 53 | current_inferior = found; |
| 54 | } |
| 55 | |
| 56 | int |
| 57 | read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
| 58 | { |
| 59 | int res; |
| 60 | res = (*the_target->read_memory) (memaddr, myaddr, len); |
| 61 | check_mem_read (memaddr, myaddr, len); |
| 62 | return res; |
| 63 | } |
| 64 | |
| 65 | int |
| 66 | write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, |
| 67 | int len) |
| 68 | { |
| 69 | /* Lacking cleanups, there is some potential for a memory leak if the |
| 70 | write fails and we go through error(). Make sure that no more than |
| 71 | one buffer is ever pending by making BUFFER static. */ |
| 72 | static unsigned char *buffer = 0; |
| 73 | int res; |
| 74 | |
| 75 | if (buffer != NULL) |
| 76 | free (buffer); |
| 77 | |
| 78 | buffer = xmalloc (len); |
| 79 | memcpy (buffer, myaddr, len); |
| 80 | check_mem_write (memaddr, buffer, len); |
| 81 | res = (*the_target->write_memory) (memaddr, buffer, len); |
| 82 | free (buffer); |
| 83 | buffer = NULL; |
| 84 | |
| 85 | return res; |
| 86 | } |
| 87 | |
| 88 | ptid_t |
| 89 | mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options, |
| 90 | int connected_wait) |
| 91 | { |
| 92 | ptid_t ret; |
| 93 | |
| 94 | if (connected_wait) |
| 95 | server_waiting = 1; |
| 96 | |
| 97 | ret = (*the_target->wait) (ptid, ourstatus, options); |
| 98 | |
| 99 | if (ourstatus->kind == TARGET_WAITKIND_EXITED) |
| 100 | fprintf (stderr, |
| 101 | "\nChild exited with status %d\n", ourstatus->value.sig); |
| 102 | else if (ourstatus->kind == TARGET_WAITKIND_SIGNALLED) |
| 103 | fprintf (stderr, "\nChild terminated with signal = 0x%x (%s)\n", |
| 104 | target_signal_to_host (ourstatus->value.sig), |
| 105 | target_signal_to_name (ourstatus->value.sig)); |
| 106 | |
| 107 | if (connected_wait) |
| 108 | server_waiting = 0; |
| 109 | |
| 110 | return ret; |
| 111 | } |
| 112 | |
| 113 | int |
| 114 | start_non_stop (int nonstop) |
| 115 | { |
| 116 | if (the_target->start_non_stop == NULL) |
| 117 | { |
| 118 | if (nonstop) |
| 119 | return -1; |
| 120 | else |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | return (*the_target->start_non_stop) (nonstop); |
| 125 | } |
| 126 | |
| 127 | void |
| 128 | set_target_ops (struct target_ops *target) |
| 129 | { |
| 130 | the_target = (struct target_ops *) xmalloc (sizeof (*the_target)); |
| 131 | memcpy (the_target, target, sizeof (*the_target)); |
| 132 | } |
| 133 | |
| 134 | /* Convert pid to printable format. */ |
| 135 | |
| 136 | const char * |
| 137 | target_pid_to_str (ptid_t ptid) |
| 138 | { |
| 139 | static char buf[80]; |
| 140 | |
| 141 | if (ptid_equal (ptid, minus_one_ptid)) |
| 142 | snprintf (buf, sizeof (buf), "<all threads>"); |
| 143 | else if (ptid_equal (ptid, null_ptid)) |
| 144 | snprintf (buf, sizeof (buf), "<null thread>"); |
| 145 | else if (ptid_get_tid (ptid) != 0) |
| 146 | snprintf (buf, sizeof (buf), "Thread %d.0x%lx", |
| 147 | ptid_get_pid (ptid), ptid_get_tid (ptid)); |
| 148 | else if (ptid_get_lwp (ptid) != 0) |
| 149 | snprintf (buf, sizeof (buf), "LWP %d.%ld", |
| 150 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); |
| 151 | else |
| 152 | snprintf (buf, sizeof (buf), "Process %d", |
| 153 | ptid_get_pid (ptid)); |
| 154 | |
| 155 | return buf; |
| 156 | } |