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author | Gary Benson <gbenson@redhat.com> | 2015-04-17 09:47:30 +0100 |
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committer | Gary Benson <gbenson@redhat.com> | 2015-04-17 09:47:30 +0100 |
commit | e57f1de3b37e17e1c80515f6e80ecb4ccd1bf0fb (patch) | |
tree | 519f342e28449c2327829ac6c2687f7931463f20 | |
parent | c78fa86a213db1bdef328437ac262a4f54577827 (diff) | |
download | gdb-e57f1de3b37e17e1c80515f6e80ecb4ccd1bf0fb.zip gdb-e57f1de3b37e17e1c80515f6e80ecb4ccd1bf0fb.tar.gz gdb-e57f1de3b37e17e1c80515f6e80ecb4ccd1bf0fb.tar.bz2 |
Implement qXfer:exec-file:read in gdbserver
This commit implements the "qXfer:exec-file:read" packet in gdbserver.
gdb/gdbserver/ChangeLog:
* target.h (struct target_ops) <pid_to_exec_file>: New field.
* linux-low.c (linux_target_ops): Initialize pid_to_exec_file.
* server.c (handle_qxfer_exec_file): New function.
(qxfer_packets): Add exec-file entry.
(handle_query): Report qXfer:exec-file:read as supported packet.
-rw-r--r-- | gdb/gdbserver/ChangeLog | 8 | ||||
-rw-r--r-- | gdb/gdbserver/linux-low.c | 1 | ||||
-rw-r--r-- | gdb/gdbserver/server.c | 40 | ||||
-rw-r--r-- | gdb/gdbserver/target.h | 8 |
4 files changed, 57 insertions, 0 deletions
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index 165c42c..56da6dc 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,3 +1,11 @@ +2015-04-17 Gary Benson <gbenson@redhat.com> + + * target.h (struct target_ops) <pid_to_exec_file>: New field. + * linux-low.c (linux_target_ops): Initialize pid_to_exec_file. + * server.c (handle_qxfer_exec_file): New function. + (qxfer_packets): Add exec-file entry. + (handle_query): Report qXfer:exec-file:read as supported packet. + 2015-04-14 Romain Naour <romain.naour@openwide.fr> (tiny change) * linux-low.c (linux_read_offsets): Remove get_thread_lwp. diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index a7f8446..1c4c2d7 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -6433,6 +6433,7 @@ static struct target_ops linux_target_ops = { NULL, #endif linux_supports_range_stepping, + linux_proc_pid_to_exec_file, }; static void diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c index 3408ef7..d2e20d9 100644 --- a/gdb/gdbserver/server.c +++ b/gdb/gdbserver/server.c @@ -1137,6 +1137,42 @@ handle_qxfer_auxv (const char *annex, return (*the_target->read_auxv) (offset, readbuf, len); } +/* Handle qXfer:exec-file:read. */ + +static int +handle_qxfer_exec_file (const char *const_annex, + gdb_byte *readbuf, const gdb_byte *writebuf, + ULONGEST offset, LONGEST len) +{ + char *annex, *file; + ULONGEST pid; + int total_len; + + if (the_target->pid_to_exec_file == NULL || writebuf != NULL) + return -2; + + annex = alloca (strlen (const_annex) + 1); + strcpy (annex, const_annex); + annex = unpack_varlen_hex (annex, &pid); + if (annex[0] != '\0' || pid == 0) + return -1; + + file = (*the_target->pid_to_exec_file) (pid); + if (file == NULL) + return -1; + + total_len = strlen (file); + + if (offset > total_len) + return -1; + + if (offset + len > total_len) + len = total_len - offset; + + memcpy (readbuf, file + offset, len); + return len; +} + /* Handle qXfer:features:read. */ static int @@ -1638,6 +1674,7 @@ static const struct qxfer qxfer_packets[] = { "auxv", handle_qxfer_auxv }, { "btrace", handle_qxfer_btrace }, { "btrace-conf", handle_qxfer_btrace_conf }, + { "exec-file", handle_qxfer_exec_file}, { "fdpic", handle_qxfer_fdpic}, { "features", handle_qxfer_features }, { "libraries", handle_qxfer_libraries }, @@ -2082,6 +2119,9 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p) if (target_supports_stopped_by_hw_breakpoint ()) strcat (own_buf, ";hwbreak+"); + if (the_target->pid_to_exec_file != NULL) + strcat (own_buf, ";qXfer:exec-file:read+"); + return; } diff --git a/gdb/gdbserver/target.h b/gdb/gdbserver/target.h index 126c861..6280c26 100644 --- a/gdb/gdbserver/target.h +++ b/gdb/gdbserver/target.h @@ -394,6 +394,14 @@ struct target_ops /* Return true if target supports range stepping. */ int (*supports_range_stepping) (void); + + /* Return the full absolute name of the executable file that was + run to create the process PID. If the executable file cannot + be determined, NULL is returned. Otherwise, a pointer to a + character string containing the pathname is returned. This + string should be copied into a buffer by the client if the string + will not be immediately used, or if it must persist. */ + char *(*pid_to_exec_file) (int pid); }; extern struct target_ops *the_target; |