From 0d8f58ca949525dc612ba1f019d9efe733c75677 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Wed, 1 Apr 2009 17:42:03 +0000 Subject: [PATCH] * remote.c (append_resumption): New. (remote_vcont_resume): Use it. --- gdb/ChangeLog | 5 +++ gdb/remote.c | 117 +++++++++++++++++++++++++------------------------- 2 files changed, 64 insertions(+), 58 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 3c5d1d01c5..b9d41976e4 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2009-04-01 Pedro Alves + + * remote.c (append_resumption): New. + (remote_vcont_resume): Use it. + 2009-04-01 Joel Brobecker * windows-nat.c (+windows_get_ada_task_ptid): New function. diff --git a/gdb/remote.c b/gdb/remote.c index e27ad77642..367a0ebf02 100644 --- a/gdb/remote.c +++ b/gdb/remote.c @@ -3672,6 +3672,50 @@ remote_vcont_probe (struct remote_state *rs) packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); } +/* Helper function for building "vCont" resumptions. Write a + resumption to P. ENDP points to one-passed-the-end of the buffer + we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The + thread to be resumed is PTID; STEP and SIGGNAL indicate whether the + resumed thread should be single-stepped and/or signalled. If PTID + equals minus_one_ptid, then all threads are resumed; if PTID + represents a process, then all threads of the process are resumed; + the thread to be stepped and/or signalled is given in the global + INFERIOR_PTID. */ + +static char * +append_resumption (char *p, char *endp, + ptid_t ptid, int step, enum target_signal siggnal) +{ + struct remote_state *rs = get_remote_state (); + + if (step && siggnal != TARGET_SIGNAL_0) + p += xsnprintf (p, endp - p, ";S%02x", siggnal); + else if (step) + p += xsnprintf (p, endp - p, ";s"); + else if (siggnal != TARGET_SIGNAL_0) + p += xsnprintf (p, endp - p, ";C%02x", siggnal); + else + p += xsnprintf (p, endp - p, ";c"); + + if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) + { + ptid_t nptid; + + /* All (-1) threads of process. */ + nptid = ptid_build (ptid_get_pid (ptid), 0, -1); + + p += xsnprintf (p, endp - p, ":"); + p = write_ptid (p, endp, nptid); + } + else if (!ptid_equal (ptid, minus_one_ptid)) + { + p += xsnprintf (p, endp - p, ":"); + p = write_ptid (p, endp, ptid); + } + + return p; +} + /* Resume the remote inferior by using a "vCont" packet. The thread to be resumed is PTID; STEP and SIGGNAL indicate whether the resumed thread should be single-stepped and/or signalled. If PTID @@ -3702,78 +3746,35 @@ remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) about overflowing BUF. Should there be a generic "multi-part-packet" packet? */ + p += xsnprintf (p, endp - p, "vCont"); + if (ptid_equal (ptid, magic_null_ptid)) { /* MAGIC_NULL_PTID means that we don't have any active threads, so we don't have any TID numbers the inferior will understand. Make sure to only send forms that do not specify a TID. */ - if (step && siggnal != TARGET_SIGNAL_0) - xsnprintf (p, endp - p, "vCont;S%02x", siggnal); - else if (step) - xsnprintf (p, endp - p, "vCont;s"); - else if (siggnal != TARGET_SIGNAL_0) - xsnprintf (p, endp - p, "vCont;C%02x", siggnal); - else - xsnprintf (p, endp - p, "vCont;c"); + p = append_resumption (p, endp, minus_one_ptid, step, siggnal); } - else if (ptid_equal (ptid, minus_one_ptid)) + else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) { - /* Resume all threads, with preference for INFERIOR_PTID. */ - if (step && siggnal != TARGET_SIGNAL_0) - { - /* Step inferior_ptid with signal. */ - p += xsnprintf (p, endp - p, "vCont;S%02x:", siggnal); - p = write_ptid (p, endp, inferior_ptid); - /* And continue others. */ - p += xsnprintf (p, endp - p, ";c"); - } - else if (step) - { - /* Step inferior_ptid. */ - p += xsnprintf (p, endp - p, "vCont;s:"); - p = write_ptid (p, endp, inferior_ptid); - /* And continue others. */ - p += xsnprintf (p, endp - p, ";c"); - } - else if (siggnal != TARGET_SIGNAL_0) + /* Resume all threads (of all processes, or of a single + process), with preference for INFERIOR_PTID. This assumes + inferior_ptid belongs to the set of all threads we are about + to resume. */ + if (step || siggnal != TARGET_SIGNAL_0) { - /* Continue inferior_ptid with signal. */ - p += xsnprintf (p, endp - p, "vCont;C%02x:", siggnal); - p = write_ptid (p, endp, inferior_ptid); - /* And continue others. */ - p += xsnprintf (p, endp - p, ";c"); + /* Step inferior_ptid, with or without signal. */ + p = append_resumption (p, endp, inferior_ptid, step, siggnal); } - else - xsnprintf (p, endp - p, "vCont;c"); + + /* And continue others without a signal. */ + p = append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); } else { /* Scheduler locking; resume only PTID. */ - if (step && siggnal != TARGET_SIGNAL_0) - { - /* Step ptid with signal. */ - p += xsnprintf (p, endp - p, "vCont;S%02x:", siggnal); - p = write_ptid (p, endp, ptid); - } - else if (step) - { - /* Step ptid. */ - p += xsnprintf (p, endp - p, "vCont;s:"); - p = write_ptid (p, endp, ptid); - } - else if (siggnal != TARGET_SIGNAL_0) - { - /* Continue ptid with signal. */ - p += xsnprintf (p, endp - p, "vCont;C%02x:", siggnal); - p = write_ptid (p, endp, ptid); - } - else - { - /* Continue ptid. */ - p += xsnprintf (p, endp - p, "vCont;c:"); - p = write_ptid (p, endp, ptid); - } + p = append_resumption (p, endp, ptid, step, siggnal); } gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); -- 2.34.1