old-cross-binutils/gdb/config/alpha/nm-osf3.h

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/* Native definitions for alpha running OSF/1-3.x and higher, using procfs.
Copyright (C) 1995-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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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
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(at your option) any later version.
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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.
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You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
Make STARTUP_WITH_SHELL a runtime toggle -- add new "set/show startup-with-shell" option. Occasionaly we hear about people having problems with GDB not being able to start programs (with "run"/"start"). GDB spawns a shell to start the program, and most often, it'll be the case that the problem is actually with the user's shell setup. GDB has code to disable the use of the shell to start programs. That's the STARTUP_WITH_SHELL macro that native targets could set to 0 in their nm.h file (though no target actually uses it nowadays). This patch makes that setting a run-time knob instead. This will be useful to quickly diagnose such shell issues, and might also come in handy at other times (such as when debugging the shell itself, if you don't have a different shell handy). gdb/ 2013-10-24 Pedro Alves <palves@redhat.com> * NEWS (New options): Mention set/show startup-with-shell. * config/alpha/nm-osf3.h (START_INFERIOR_TRAPS_EXPECTED): Set to 2 instead of 3. * fork-child.c (fork_inferior, startup_inferior): Handle 'set startup-with-shell'. (show_startup_with_shell): New function. (_initialize_fork_child): Register the set/show startup-with-shell commands. * inf-ptrace.c (inf_ptrace_create_inferior): Remove comment. * inf-ttrace.c (inf_ttrace_him): Remove comment. * procfs.c (procfs_init_inferior): Remove comment. * infcmd.c (startup_with_shell): New global. * inferior.h (startup_with_shell): Declare global. (STARTUP_WITH_SHELL): Delete. (START_INFERIOR_TRAPS_EXPECTED): Set to 1 by default instead of 2. gdb/doc/ 2013-10-24 Pedro Alves <palves@redhat.com> * gdb.texinfo (Starting): Document set/show startup-with-shell.
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/* Number of traps that happen between exec'ing the shell to run an
inferior, and when we finally get to the inferior code, not
counting the exec for the shell. This is 1 on most
implementations. */
#define START_INFERIOR_TRAPS_EXPECTED 2
/* Don't trace faults under OSF/1, rely on the posting of the appropriate
signal if fault tracing is disabled.
Tracing T_IFAULT under Alpha OSF/1 causes a `floating point enable'
fault from which we cannot continue (except by disabling the
tracing).
And as OSF/1 doesn't provide the standard fault definitions, the
mapping of faults to appropriate signals in procfs_wait is difficult. */
#define PROCFS_DONT_TRACE_FAULTS
/* Work around some peculiarities in the OSF/1 procfs implementation. */
#define PROCFS_NEED_CLEAR_CURSIG_FOR_KILL