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-rw-r--r--gdb/common/agent.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/gdb/common/agent.c b/gdb/common/agent.c
deleted file mode 100644
index ae495a8..0000000
--- a/gdb/common/agent.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/* Shared utility routines for GDB to interact with agent.
-
- Copyright (C) 2009-2019 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#include "common-defs.h"
-#include "target/target.h"
-#include "common/symbol.h"
-#include <unistd.h>
-#include "filestuff.h"
-
-#define IPA_SYM_STRUCT_NAME ipa_sym_addresses_common
-#include "agent.h"
-
-int debug_agent = 0;
-
-/* A stdarg wrapper for debug_vprintf. */
-
-static void ATTRIBUTE_PRINTF (1, 2)
-debug_agent_printf (const char *fmt, ...)
-{
- va_list ap;
-
- if (!debug_agent)
- return;
- va_start (ap, fmt);
- debug_vprintf (fmt, ap);
- va_end (ap);
-}
-
-#define DEBUG_AGENT debug_agent_printf
-
-/* Global flag to determine using agent or not. */
-int use_agent = 0;
-
-/* Addresses of in-process agent's symbols both GDB and GDBserver cares
- about. */
-
-struct ipa_sym_addresses_common
-{
- CORE_ADDR addr_helper_thread_id;
- CORE_ADDR addr_cmd_buf;
- CORE_ADDR addr_capability;
-};
-
-/* Cache of the helper thread id. FIXME: this global should be made
- per-process. */
-static uint32_t helper_thread_id = 0;
-
-static struct
-{
- const char *name;
- int offset;
-} symbol_list[] = {
- IPA_SYM(helper_thread_id),
- IPA_SYM(cmd_buf),
- IPA_SYM(capability),
-};
-
-static struct ipa_sym_addresses_common ipa_sym_addrs;
-
-static int all_agent_symbols_looked_up = 0;
-
-int
-agent_loaded_p (void)
-{
- return all_agent_symbols_looked_up;
-}
-
-/* Look up all symbols needed by agent. Return 0 if all the symbols are
- found, return non-zero otherwise. */
-
-int
-agent_look_up_symbols (void *arg)
-{
- int i;
-
- all_agent_symbols_looked_up = 0;
-
- for (i = 0; i < sizeof (symbol_list) / sizeof (symbol_list[0]); i++)
- {
- CORE_ADDR *addrp =
- (CORE_ADDR *) ((char *) &ipa_sym_addrs + symbol_list[i].offset);
- struct objfile *objfile = (struct objfile *) arg;
-
- if (find_minimal_symbol_address (symbol_list[i].name, addrp,
- objfile) != 0)
- {
- DEBUG_AGENT ("symbol `%s' not found\n", symbol_list[i].name);
- return -1;
- }
- }
-
- all_agent_symbols_looked_up = 1;
- return 0;
-}
-
-static unsigned int
-agent_get_helper_thread_id (void)
-{
- if (helper_thread_id == 0)
- {
- if (target_read_uint32 (ipa_sym_addrs.addr_helper_thread_id,
- &helper_thread_id))
- warning (_("Error reading helper thread's id in lib"));
- }
-
- return helper_thread_id;
-}
-
-#ifdef HAVE_SYS_UN_H
-#include <sys/socket.h>
-#include <sys/un.h>
-#define SOCK_DIR P_tmpdir
-
-#ifndef UNIX_PATH_MAX
-#define UNIX_PATH_MAX sizeof(((struct sockaddr_un *) NULL)->sun_path)
-#endif
-
-#endif
-
-/* Connects to synchronization socket. PID is the pid of inferior, which is
- used to set up the connection socket. */
-
-static int
-gdb_connect_sync_socket (int pid)
-{
-#ifdef HAVE_SYS_UN_H
- struct sockaddr_un addr;
- int res, fd;
- char path[UNIX_PATH_MAX];
-
- res = xsnprintf (path, UNIX_PATH_MAX, "%s/gdb_ust%d", P_tmpdir, pid);
- if (res >= UNIX_PATH_MAX)
- return -1;
-
- res = fd = gdb_socket_cloexec (PF_UNIX, SOCK_STREAM, 0);
- if (res == -1)
- {
- warning (_("error opening sync socket: %s"), strerror (errno));
- return -1;
- }
-
- addr.sun_family = AF_UNIX;
-
- res = xsnprintf (addr.sun_path, UNIX_PATH_MAX, "%s", path);
- if (res >= UNIX_PATH_MAX)
- {
- warning (_("string overflow allocating socket name"));
- close (fd);
- return -1;
- }
-
- res = connect (fd, (struct sockaddr *) &addr, sizeof (addr));
- if (res == -1)
- {
- warning (_("error connecting sync socket (%s): %s. "
- "Make sure the directory exists and that it is writable."),
- path, strerror (errno));
- close (fd);
- return -1;
- }
-
- return fd;
-#else
- return -1;
-#endif
-}
-
-/* Execute an agent command in the inferior. PID is the value of pid of the
- inferior. CMD is the buffer for command. GDB or GDBserver will store the
- command into it and fetch the return result from CMD. The interaction
- between GDB/GDBserver and the agent is synchronized by a synchronization
- socket. Return zero if success, otherwise return non-zero. */
-
-int
-agent_run_command (int pid, const char *cmd, int len)
-{
- int fd;
- int tid = agent_get_helper_thread_id ();
- ptid_t ptid = ptid_t (pid, tid, 0);
-
- int ret = target_write_memory (ipa_sym_addrs.addr_cmd_buf,
- (gdb_byte *) cmd, len);
-
- if (ret != 0)
- {
- warning (_("unable to write"));
- return -1;
- }
-
- DEBUG_AGENT ("agent: resumed helper thread\n");
-
- /* Resume helper thread. */
- target_continue_no_signal (ptid);
-
- fd = gdb_connect_sync_socket (pid);
- if (fd >= 0)
- {
- char buf[1] = "";
-
- DEBUG_AGENT ("agent: signalling helper thread\n");
-
- do
- {
- ret = write (fd, buf, 1);
- } while (ret == -1 && errno == EINTR);
-
- DEBUG_AGENT ("agent: waiting for helper thread's response\n");
-
- do
- {
- ret = read (fd, buf, 1);
- } while (ret == -1 && errno == EINTR);
-
- close (fd);
-
- DEBUG_AGENT ("agent: helper thread's response received\n");
- }
- else
- return -1;
-
- /* Need to read response with the inferior stopped. */
- if (ptid != null_ptid)
- {
- /* Stop thread PTID. */
- DEBUG_AGENT ("agent: stop helper thread\n");
- target_stop_and_wait (ptid);
- }
-
- if (fd >= 0)
- {
- if (target_read_memory (ipa_sym_addrs.addr_cmd_buf, (gdb_byte *) cmd,
- IPA_CMD_BUF_SIZE))
- {
- warning (_("Error reading command response"));
- return -1;
- }
- }
-
- return 0;
-}
-
-/* Each bit of it stands for a capability of agent. */
-static uint32_t agent_capability = 0;
-
-/* Return true if agent has capability AGENT_CAP, otherwise return false. */
-
-int
-agent_capability_check (enum agent_capa agent_capa)
-{
- if (agent_capability == 0)
- {
- if (target_read_uint32 (ipa_sym_addrs.addr_capability,
- &agent_capability))
- warning (_("Error reading capability of agent"));
- }
- return agent_capability & agent_capa;
-}
-
-/* Invalidate the cache of agent capability, so we'll read it from inferior
- again. Call it when launches a new program or reconnect to remote stub. */
-
-void
-agent_capability_invalidate (void)
-{
- agent_capability = 0;
-}
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