From bc7b765ab71f967eb2a9c3da111d7529eec46fbe Mon Sep 17 00:00:00 2001 From: John Baldwin Date: Sun, 3 Jul 2016 11:56:21 -0700 Subject: [PATCH] Pass SIGLIBRT directly to child processes. FreeBSD's librt uses SIGLIBRT as an internal signal to implement SIGEV_THREAD sigevent notifications. Similar to SIGLWP or SIGCANCEL this signal should be passed through to child processes by default. include/ChangeLog: * signals.def: Add GDB_SIGNAL_LIBRT. gdb/ChangeLog: * common/signals.c (gdb_signal_from_host): Handle SIGLIBRT. (do_gdb_signal_to_host): Likewise. * infrun.c (_initialize_infrun): Pass GDB_SIGNAL_LIBRT through to programs. * proc-events.c (signal_table): Add entry for SIGLIBRT. --- gdb/ChangeLog | 8 ++++++++ gdb/common/signals.c | 8 ++++++++ gdb/infrun.c | 2 ++ gdb/proc-events.c | 3 +++ include/gdb/ChangeLog | 4 ++++ include/gdb/signals.def | 4 +++- 6 files changed, 28 insertions(+), 1 deletion(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 8f5a5e0c1b6..6c187dc4dfc 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +2016-07-15 John Baldwin + + * common/signals.c (gdb_signal_from_host): Handle SIGLIBRT. + (do_gdb_signal_to_host): Likewise. + * infrun.c (_initialize_infrun): Pass GDB_SIGNAL_LIBRT through to + programs. + * proc-events.c (signal_table): Add entry for SIGLIBRT. + 2016-07-14 Tom Tromey * python/py-breakpoint.c (gdbpy_breakpoint_deleted): Add missing diff --git a/gdb/common/signals.c b/gdb/common/signals.c index 45c0c7341ef..f84935d4711 100644 --- a/gdb/common/signals.c +++ b/gdb/common/signals.c @@ -331,6 +331,10 @@ gdb_signal_from_host (int hostsig) if (hostsig == SIGINFO) return GDB_SIGNAL_INFO; #endif +#if defined (SIGLIBRT) + if (hostsig == SIGLIBRT) + return GDB_SIGNAL_LIBRT; +#endif #if defined (REALTIME_LO) if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI) @@ -584,6 +588,10 @@ do_gdb_signal_to_host (enum gdb_signal oursig, case GDB_SIGNAL_INFO: return SIGINFO; #endif +#if defined (SIGLIBRT) + case GDB_SIGNAL_LIBRT: + return SIGLIBRT; +#endif default: #if defined (REALTIME_LO) diff --git a/gdb/infrun.c b/gdb/infrun.c index 70a0790b9ac..257ac8ae32f 100644 --- a/gdb/infrun.c +++ b/gdb/infrun.c @@ -9409,6 +9409,8 @@ leave it stopped or free to run as needed."), signal_print[GDB_SIGNAL_WAITING] = 0; signal_stop[GDB_SIGNAL_CANCEL] = 0; signal_print[GDB_SIGNAL_CANCEL] = 0; + signal_stop[GDB_SIGNAL_LIBRT] = 0; + signal_print[GDB_SIGNAL_LIBRT] = 0; /* Update cached state. */ signal_cache_update (-1); diff --git a/gdb/proc-events.c b/gdb/proc-events.c index b291d317fe4..daa6f5862f3 100644 --- a/gdb/proc-events.c +++ b/gdb/proc-events.c @@ -1536,6 +1536,9 @@ static struct trans signal_table[] = #ifdef SIGAIO { SIGAIO, "SIGAIO", "Asynchronous I/O signal" }, #endif +#ifdef SIGLIBRT + { SIGLIBRT, "SIGLIBRT", "Used by librt" }, +#endif /* FIXME: add real-time signals. */ }; diff --git a/include/gdb/ChangeLog b/include/gdb/ChangeLog index f05ba4b6287..05f127e5632 100644 --- a/include/gdb/ChangeLog +++ b/include/gdb/ChangeLog @@ -1,3 +1,7 @@ +2016-07-15 John Baldwin + + * signals.def: Add GDB_SIGNAL_LIBRT. + 2016-01-06 Mike Frysinger * remote-sim.h (sim_open): Mark argv const. diff --git a/include/gdb/signals.def b/include/gdb/signals.def index 61cc88c1cb0..2b30e71ec01 100644 --- a/include/gdb/signals.def +++ b/include/gdb/signals.def @@ -194,7 +194,9 @@ SET (GDB_EXC_EMULATION, 148, "EXC_EMULATION", "Emulation instruction") SET (GDB_EXC_SOFTWARE, 149, "EXC_SOFTWARE", "Software generated exception") SET (GDB_EXC_BREAKPOINT, 150, "EXC_BREAKPOINT", "Breakpoint") +SET (GDB_SIGNAL_LIBRT, 151, "SIGLIBRT", "librt internal signal") + /* If you are adding a new signal, add it just above this comment. */ /* Last and unused enum value, for sizing arrays, etc. */ -SET (GDB_SIGNAL_LAST, 151, NULL, "GDB_SIGNAL_LAST") +SET (GDB_SIGNAL_LAST, 152, NULL, "GDB_SIGNAL_LAST") -- 2.30.2