From: Pedro Alves Date: Fri, 27 Jun 2008 13:22:15 +0000 (+0000) Subject: * remote-utils.c (prepare_resume_reply): If requested, don't X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=db42f210256e79f3fa409b73e217d870989ce6cd;p=binutils-gdb.git * remote-utils.c (prepare_resume_reply): If requested, don't output "thread:TID" in the T stop reply. * server.c (disable_packet_vCont, disable_packet_Tthread) (disable_packet_qC, disable_packet_qfThreadInfo): New globals. (handle_query): If requested, disable support for qC, qfThreadInfo and qsThreadInfo. (handle_v_requests): If requested, disable support for vCont. (gdbserver_show_disableable): New. (main): Handle --disable-packet and --disable-packet=LIST. * server.h (disable_packet_vCont, disable_packet_Tthread) (disable_packet_qC, disable_packet_qfThreadInfo): Declare. --- diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index c365ee7dc6d..7492be0b792 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,3 +1,19 @@ +2008-06-27 Pedro Alves + + * remote-utils.c (prepare_resume_reply): If requested, don't + output "thread:TID" in the T stop reply. + + * server.c (disable_packet_vCont, disable_packet_Tthread) + (disable_packet_qC, disable_packet_qfThreadInfo): New globals. + (handle_query): If requested, disable support for qC, qfThreadInfo + and qsThreadInfo. + (handle_v_requests): If requested, disable support for vCont. + (gdbserver_show_disableable): New. + (main): Handle --disable-packet and --disable-packet=LIST. + + * server.h (disable_packet_vCont, disable_packet_Tthread) + (disable_packet_qC, disable_packet_qfThreadInfo): Declare. + 2008-06-20 Carlos O'Donell * server.c (gdbserver_usage): Mention --version. diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c index 16d5442053f..e062be8fc16 100644 --- a/gdb/gdbserver/remote-utils.c +++ b/gdb/gdbserver/remote-utils.c @@ -944,7 +944,7 @@ prepare_resume_reply (char *buf, char status, unsigned char sig) Since thread support relies on qSymbol support anyway, assume GDB can handle threads. */ - if (using_threads) + if (using_threads && !disable_packet_Tthread) { unsigned int gdb_id_from_wait; diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c index 27fa3840981..da2ec7a2dc6 100644 --- a/gdb/gdbserver/server.c +++ b/gdb/gdbserver/server.c @@ -67,6 +67,14 @@ int terminal_fd; /* TERMINAL_FD's original foreground group. */ pid_t old_foreground_pgrp; +/* Set if you want to disable optional thread related packets support + in gdbserver, for the sake of testing GDB against stubs that don't + support them. */ +int disable_packet_vCont; +int disable_packet_Tthread; +int disable_packet_qC; +int disable_packet_qfThreadInfo; + /* Hand back terminal ownership to the original foreground group. */ static void @@ -475,12 +483,12 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p) static struct inferior_list_entry *thread_ptr; /* Reply the current thread id. */ - if (strcmp ("qC", own_buf) == 0) + if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) { require_running (own_buf); thread_ptr = all_threads.head; sprintf (own_buf, "QC%x", - thread_to_gdb_id ((struct thread_info *)thread_ptr)); + thread_to_gdb_id ((struct thread_info *)thread_ptr)); return; } @@ -493,28 +501,31 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p) return; } - if (strcmp ("qfThreadInfo", own_buf) == 0) - { - require_running (own_buf); - thread_ptr = all_threads.head; - sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); - thread_ptr = thread_ptr->next; - return; - } - - if (strcmp ("qsThreadInfo", own_buf) == 0) + if (!disable_packet_qfThreadInfo) { - require_running (own_buf); - if (thread_ptr != NULL) + if (strcmp ("qfThreadInfo", own_buf) == 0) { + require_running (own_buf); + thread_ptr = all_threads.head; sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); thread_ptr = thread_ptr->next; return; } - else + + if (strcmp ("qsThreadInfo", own_buf) == 0) { - sprintf (own_buf, "l"); - return; + require_running (own_buf); + if (thread_ptr != NULL) + { + sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); + thread_ptr = thread_ptr->next; + return; + } + else + { + sprintf (own_buf, "l"); + return; + } } } @@ -1098,17 +1109,20 @@ void handle_v_requests (char *own_buf, char *status, int *signal, int packet_len, int *new_packet_len) { - if (strncmp (own_buf, "vCont;", 6) == 0) + if (!disable_packet_vCont) { - require_running (own_buf); - handle_v_cont (own_buf, status, signal); - return; - } + if (strncmp (own_buf, "vCont;", 6) == 0) + { + require_running (own_buf); + handle_v_cont (own_buf, status, signal); + return; + } - if (strncmp (own_buf, "vCont?", 6) == 0) - { - strcpy (own_buf, "vCont;c;C;s;S"); - return; + if (strncmp (own_buf, "vCont?", 6) == 0) + { + strcpy (own_buf, "vCont;c;C;s;S"); + return; + } } if (strncmp (own_buf, "vFile:", 6) == 0 @@ -1203,6 +1217,18 @@ gdbserver_usage (FILE *stream) fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); } +static void +gdbserver_show_disableable (FILE *stream) +{ + fprintf (stream, "Disableable packets:\n" + " vCont \tAll vCont packets\n" + " qC \tQuerying the current thread\n" + " qfThreadInfo\tThread listing\n" + " Tthread \tPassing the thread specifier in the T stop reply packet\n" + " threads \tAll of the above\n"); +} + + #undef require_running #define require_running(BUF) \ if (!target_running ()) \ @@ -1263,6 +1289,46 @@ main (int argc, char *argv[]) } else if (strcmp (*next_arg, "--debug") == 0) debug_threads = 1; + else if (strcmp (*next_arg, "--disable-packet") == 0) + { + gdbserver_show_disableable (stdout); + exit (0); + } + else if (strncmp (*next_arg, + "--disable-packet=", + sizeof ("--disable-packet=") - 1) == 0) + { + char *packets, *tok; + + packets = *next_arg += sizeof ("--disable-packet=") - 1; + for (tok = strtok (packets, ","); + tok != NULL; + tok = strtok (NULL, ",")) + { + if (strcmp ("vCont", tok) == 0) + disable_packet_vCont = 1; + else if (strcmp ("Tthread", tok) == 0) + disable_packet_Tthread = 1; + else if (strcmp ("qC", tok) == 0) + disable_packet_qC = 1; + else if (strcmp ("qfThreadInfo", tok) == 0) + disable_packet_qfThreadInfo = 1; + else if (strcmp ("threads", tok) == 0) + { + disable_packet_vCont = 1; + disable_packet_Tthread = 1; + disable_packet_qC = 1; + disable_packet_qfThreadInfo = 1; + } + else + { + fprintf (stderr, "Don't know how to disable \"%s\".\n\n", + tok); + gdbserver_show_disableable (stderr); + exit (1); + } + } + } else { fprintf (stderr, "Unknown argument: %s\n", *next_arg); diff --git a/gdb/gdbserver/server.h b/gdb/gdbserver/server.h index d0520d237b1..aedd14a46b8 100644 --- a/gdb/gdbserver/server.h +++ b/gdb/gdbserver/server.h @@ -156,6 +156,11 @@ extern int pass_signals[]; extern jmp_buf toplevel; +extern int disable_packet_vCont; +extern int disable_packet_Tthread; +extern int disable_packet_qC; +extern int disable_packet_qfThreadInfo; + /* Functions from hostio.c. */ extern int handle_vFile (char *, int, int *);