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introduce common.m4 It has bothered me for a while that files in common/ use macros defined via autoconf checks, but rely on each configure.ac doing the proper checks independently. This patch introduces common/common.m4 which consolidates the checks assumed by code in common. The rule I propose is that if something is needed or used by common, it should be checked for by common.m4. However, if the check is also needed by gdb or gdbserver, then it should be duplicated there. Built and regtested on x86-64 Fedora 18 (though this is hardly the most strenuous case) and using the Fedora 18 mingw cross compilers. I also examined the config.in diffs to ensure that symbols did not go missing. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4. * common/common.m4: New file. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4, codeset.m4. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON.
2013-04-24 18:45:45 +02:00
dnl Autoconf configure snippets for common.
Update copyright year range in all GDB files gdb/ChangeLog: Update copyright year range in all GDB files
2018-01-01 05:43:02 +01:00
dnl Copyright (C) 1995-2018 Free Software Foundation, Inc.
introduce common.m4 It has bothered me for a while that files in common/ use macros defined via autoconf checks, but rely on each configure.ac doing the proper checks independently. This patch introduces common/common.m4 which consolidates the checks assumed by code in common. The rule I propose is that if something is needed or used by common, it should be checked for by common.m4. However, if the check is also needed by gdb or gdbserver, then it should be duplicated there. Built and regtested on x86-64 Fedora 18 (though this is hardly the most strenuous case) and using the Fedora 18 mingw cross compilers. I also examined the config.in diffs to ensure that symbols did not go missing. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4. * common/common.m4: New file. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4, codeset.m4. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON.
2013-04-24 18:45:45 +02:00
dnl
dnl This file is part of GDB.
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
dnl Invoke configury needed by the files in 'common'.
AC_DEFUN([GDB_AC_COMMON], [
AC_HEADER_STDC
AC_FUNC_ALLOCA
dnl Note that this requires codeset.m4, which is included
dnl by the users of common.m4.
AM_LANGINFO_CODESET
AC_CHECK_HEADERS(linux/perf_event.h locale.h memory.h signal.h dnl
Remove ioctl-based procfs support on Solaris This is the previously mentioned patch to get rid of unstructured/ioctl-based procfs support in procfs.c. Given that support for structured procfs was introduced in Solaris 2.6 back in 1997 and we're just removing support for Solaris < 10, there's no point in carrying that baggage (and tons of support for IRIX and OSF/1 as well) around any longer. Most of the patch should be straightforward (removing support for !NEW_PROC_API, non-Solaris OSes and pre-Solaris 10 quirks). Only a few points need explanations: * <sys/syscall.h> was already included unconditionally in most places, so there's no need to have guards in a few remaining ones. * configure.host already obsoletes i?86-*-sysv4.2, i?86-*-sysv5, so NEW_PROC_API detection for those in configure.ac can go. * I'm still including <sys/procfs.h> with #define _STRUCTURED_PROC 1. Theoretically, it would be better to include <procfs.h> on Solaris (which includes that define), but that breaks the build over <procfs.h> vs. gdb's "procfs.h", and doesn't exist on Linux. * I've regenerated syscall_table[] in proc-events.c with a small script from Solaris 10, 11.3, 11.4 <sys/syscall.h>, so there should be no traces of older Solaris versions and other OSes left. * prsysent_t and DYNAMIC_SYSCALLS was only used for AIX 5, but AIX doesn't use procfs.c any longer, so all related code can go. The patch was generated with diff -w so one can easier see changes without being distracted by simple reindentations. So far, it has only been compiled and smoke-tested on amd64-pc-solaris2.1[01], sparcv9-sun-solaris2.1[01], and x86_64-pc-linux-gnu. Certainly needs more testing (Solaris 11.3 vs. 11.4, 32-bit gdb, testsuite once I've figured out what's wrong on Solaris 10 etc.), but it's enough to get a first impression how much cleanup is possible here. * configure.ac Don't check for sys/fault.h, sys/syscall.h, sys/proc.h. (NEW_PROC_API): Remove. (prsysent_t, pr_sigset_t, pr_sigaction64_t, pr_siginfo64_t): Likewise. * common/common.m4 (GDB_AC_COMMON): Don't check for sys/syscall.h. * configure: Regenerate. * config.in: Regenerate. * gdbserver/configure: Regenerate. * gdbserver/config.in: Regenerate. * i386-sol2-nat.c (_initialize_amd64_sol2_nat): Remove NEW_PROC_API test. * sparc-sol2-nat.c (_initialize_sparc_sol2_nat): Likewise. * linux-btrace.c: Remove HAVE_SYS_SYSCALL_H test. * proc-api.c: Remove !NEW_PROC_API support. Remove HAVE_SYS_PROC_H and HAVE_SYS_USER_H tests. Remove tests for macros always defined on Solaris. * proc-events.c: Remove !NEW_PROC_API support. Remove Remove HAVE_SYS_SYSCALL_H, HAVE_SYS_PROC_H and HAVE_SYS_USER_H tests. (init_syscall_table): Remove non-Solaris syscalls. Remove tests for syscalls present on all Solaris versions. Add missing Solaris 10+ syscalls. (signal_table): Remove non-Solaris signals. Remove tests for signals present on all Solaris versions. (fault_table): Remove non-Solaris faults. Remove tests for faults present on all Solaris versions. * proc-flags.c: Remove !NEW_PROC_API support. (pr_flag_table): Remove non-Solaris and pre-Solaris 7 comments. Remove non-Solaris flags. * proc-why.c: Remove !NEW_PROC_API support. (pr_why_table): Remove meaningless comments. Remove tests for reasons present on all Solaris versions. Remove OSF/1 cases. (proc_prettyfprint_why): Likewise. * procfs.c: Remove !NEW_PROC_API and DYNAMIC_SYSCALLS support. Remove HAVE_SYS_FAULT_H and HAVE_SYS_SYSCALL_H tests. Remove WA_READ test, IRIX watchpoint support. (gdb_sigset_t, gdb_sigaction_t, gdb_siginfo_t): Replace by base types. Change users. (gdb_praddset, gdb_prdelset, gdb_premptysysset, gdb_praddsysset) (gdb_prdelset, gdb_pr_issyssetmember): Replace by base macros. Change callers. Remove CTL_PROC_NAME_FMT tests. (gdb_prstatus_t, gdb_lwpstatus_t): Replace by base types. Change users. (sysset_t_size): Remove. Use sizeof (sysset_t) in callers. Remove PROCFS_DONT_PIOCSSIG_CURSIG support. (proc_modify_flag): Replace GDBRESET by PCUNSET. Remove PR_ASYNC, PR_KLC tests. (proc_unset_inherit_on_fork): Remove PR_ASYNC test. (proc_parent_pid): Remove PCWATCH etc. tests. (proc_set_watchpoint): Remove !PCWATCH && !PIOCSWATCH support. Remove PCAGENT test. (proc_get_nthreads) [PIOCNTHR && PIOCTLIST]: Remove. Remove SYS_lwpcreate || SYS_lwp_create test. (proc_get_current_thread): Likewise. [PIOCNTHR && PIOCTLIST]: Remove. [PIOCLSTATUS]: Remove. (procfs_debug_inferior): Remove non-Solaris cases, conditionals. [PRFS_STOPEXEC]: Remove. (syscall_is_lwp_exit): Remove non-Solaris cases, conditionals. (syscall_is_exit): Likewise. (syscall_is_exec): Likewise. (syscall_is_lwp_create): Likewise. Remove SYS_syssgi support. (procfs_wait): Remove PR_ASYNC, !PIOCSSPCACT tests. [SYS_syssgi]: Remove. Remove non-Solaris cases, conditionals. (unconditionally_kill_inferior) [PROCFS_NEED_PIOCSSIG_FOR_KILL]: Remove. (procfs_init_inferior) [SYS_syssgi]: Remove. (procfs_set_exec_trap) [PRFS_STOPEXEC]: Remove. (procfs_inferior_created) [SYS_syssgi]: Remove. (procfs_set_watchpoint): Remove !AIX5 test. (procfs_stopped_by_watchpoint): Remove FLTWATCH test, FLTKWATCH case. (mappingflags) [MA_PHYS]: Remove. (info_mappings_callback): Remove PCAGENT test. Remove PIOCOPENLWP || PCAGENT test.
2017-11-30 16:05:30 +01:00
sys/resource.h sys/socket.h dnl
introduce common.m4 It has bothered me for a while that files in common/ use macros defined via autoconf checks, but rely on each configure.ac doing the proper checks independently. This patch introduces common/common.m4 which consolidates the checks assumed by code in common. The rule I propose is that if something is needed or used by common, it should be checked for by common.m4. However, if the check is also needed by gdb or gdbserver, then it should be duplicated there. Built and regtested on x86-64 Fedora 18 (though this is hardly the most strenuous case) and using the Fedora 18 mingw cross compilers. I also examined the config.in diffs to ensure that symbols did not go missing. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4. * common/common.m4: New file. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4, codeset.m4. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON.
2013-04-24 18:45:45 +02:00
sys/un.h sys/wait.h dnl
Create gdb_termios.h (and cleanup gdb/{,gdbserver/}terminal.h) As requested, I'm sending this as a separate patch because it is ready to be included as-is. The idea here is that both gdb/terminal.h and gdb/gdbserver/terminal.h share the same code, which is responsible for setting a bunch of defines on based on the presence of termios.h and a few other headers. This simple patch just moves this common code to common/gdb_termios.h and makes the necessary adjustments on both GDB and gdbserver so that they can use this new header. It also implements the some header checks on common/common.m4. As a bonus, gdb/gdbserver/terminal.h can be removed because it's now empty. Built on x86_64, no regressions found. gdb/ChangeLog: 2017-04-12 Sergio Durigan Junior <sergiodj@redhat.com> * Makefile.in (HFILES_NO_SRCDIR): Add "common/gdb_termios.h". * common/common.m4: Check headers 'termios.h', 'termio.h' and 'sgtty.h'. * common/gdb_termios.h: New file, with parts of "terminal.h". * inflow.c: Include "gdb_termios.h". * ser-unix.c: Include "gdb_termios.h". * terminal.h: Move terminal-related defines to "common/gdb_termios.h". gdb/gdbserver/ChangeLog: 2017-04-12 Sergio Durigan Junior <sergiodj@redhat.com> * remote-utils.c: Include "gdb_termios.h" instead of "terminal.h". * terminal.h: Delete file.
2017-04-12 03:05:12 +02:00
thread_db.h wait.h dnl
Don't check termio.h and sgtty.h in common/common.m4 either common/common.m4 still had checks for termio.h/sgtty.h that are stale now. Remove them. gdb/ChangeLog: 2017-11-06 Pedro Alves <palves@redhat.com> * common/common.m4 (GDB_AC_COMMON): No longer check termio.h nor sgtty.h. * config.in, configure: Regenerate. gdb/gdbserver/ChangeLog: 2017-11-06 Pedro Alves <palves@redhat.com> * config.in, configure: Regenerate.
2017-11-06 17:19:12 +01:00
termios.h)
introduce common.m4 It has bothered me for a while that files in common/ use macros defined via autoconf checks, but rely on each configure.ac doing the proper checks independently. This patch introduces common/common.m4 which consolidates the checks assumed by code in common. The rule I propose is that if something is needed or used by common, it should be checked for by common.m4. However, if the check is also needed by gdb or gdbserver, then it should be duplicated there. Built and regtested on x86-64 Fedora 18 (though this is hardly the most strenuous case) and using the Fedora 18 mingw cross compilers. I also examined the config.in diffs to ensure that symbols did not go missing. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4. * common/common.m4: New file. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4, codeset.m4. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON.
2013-04-24 18:45:45 +02:00
Fix PR gdb/18653: gdb disturbs inferior's inherited signal dispositions gdb's (or gdbserver's) own signal handling should not interfere with the signal dispositions their spawned children inherit. However, it currently does. For example, some paths in gdb cause SIGPIPE to be set to SIG_IGN, and as consequence, the child starts with SIGPIPE to set to SIG_IGN too, even though gdb was started with SIGPIPE set to SIG_DFL. This is because the exec family of functions does not reset the signal disposition of signals that are set to SIG_IGN: http://pubs.opengroup.org/onlinepubs/7908799/xsh/execve.html Signals set to the default action (SIG_DFL) in the calling process image are set to the default action in the new process image. Signals set to be ignored (SIG_IGN) by the calling process image are set to be ignored by the new process image. Signals set to be caught by the calling process image are set to the default action in the new process image (see <signal.h>). And neither does it reset signal masks or flags. In order to be transparent, when spawning new child processes to debug (with "run", etc.), reset signal actions and mask back to what was originally inherited from gdb/gdbserver's parent, just before execing the target program to debug. gdb/ChangeLog: 2016-08-09 Pedro Alves <palves@redhat.com> PR gdb/18653 * Makefile.in (SFILES): Add common/signals-state-save-restore.c. (HFILES_NO_SRCDIR): Add common/signals-state-save-restore.h. (COMMON_OBS): Add signals-state-save-restore.o. (signals-state-save-restore.o): New rule. * configure: Regenerate. * fork-child.c: Include "signals-state-save-restore.h". (fork_inferior): Call restore_original_signals_state. * main.c: Include "signals-state-save-restore.h". (captured_main): Call save_original_signals_state. * common/common.m4: Add sigaction to AC_CHECK_FUNCS checks. * common/signals-state-save-restore.c: New file. * common/signals-state-save-restore.h: New file. gdb/gdbserver/ChangeLog: 2016-08-09 Pedro Alves <palves@redhat.com> PR gdb/18653 * Makefile.in (OBS): Add signals-state-save-restore.o. (signals-state-save-restore.o): New rule. * config.in: Regenerate. * configure: Regenerate. * linux-low.c: Include "signals-state-save-restore.h". (linux_create_inferior): Call restore_original_signals_state. * server.c: Include "dispositions-save-restore.h". (captured_main): Call save_original_signals_state. gdb/testsuite/ChangeLog: 2016-08-09 Pedro Alves <palves@redhat.com> PR gdb/18653 * gdb.base/signals-state-child.c: New file. * gdb.base/signals-state-child.exp: New file. * gdb.gdb/selftest.exp (do_steps_and_nexts): Add new pattern.
2016-08-09 21:16:20 +02:00
AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 socketpair sigaction])
introduce common.m4 It has bothered me for a while that files in common/ use macros defined via autoconf checks, but rely on each configure.ac doing the proper checks independently. This patch introduces common/common.m4 which consolidates the checks assumed by code in common. The rule I propose is that if something is needed or used by common, it should be checked for by common.m4. However, if the check is also needed by gdb or gdbserver, then it should be duplicated there. Built and regtested on x86-64 Fedora 18 (though this is hardly the most strenuous case) and using the Fedora 18 mingw cross compilers. I also examined the config.in diffs to ensure that symbols did not go missing. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4. * common/common.m4: New file. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4, codeset.m4. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON.
2013-04-24 18:45:45 +02:00
AC_CHECK_DECLS([strerror, strstr])
Introduce common/gdb_setjmp.h This commit creates a new file, common/gdb_setjmp.h, to hold some portability macros for setjmp/longjmp et al. that are used by the exceptions subsystem and by the demangler crash catcher. gdb/ChangeLog: * common/gdb_setjmp.h: New file. * Makefile.in (HFILES_NO_SRCDIR): Add common/gdb_setjmp.h. * configure.ac: Move sigsetjmp check... * common/common.m4: ...here. * configure: Regenerate. * cp-support.c (SIGJMP_BUF): Delete. (SIGSETJMP): Likewise. (SIGLONGJMP): Likewise. * exceptions.h (gdb_setjmp.h): Include. (setjmp.h): Do not include. (EXCEPTIONS_SIGJMP_BUF): Delete. (EXCEPTIONS_SIGSETJMP): Likewise. (EXCEPTIONS_SIGLONGJMP): Likewise. Replace all uses of EXCEPTIONS_SIG* macros with SIG* macros from gdb_setjmp.h. * exceptions.c: Likewise. gdb/gdbserver/ChangeLog: * config.in: Regenerate. * configure: Likewise.
2014-08-07 16:53:21 +02:00
dnl Check if sigsetjmp is available. Using AC_CHECK_FUNCS won't
dnl do since sigsetjmp might only be defined as a macro.
AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
[AC_TRY_COMPILE([
#include <setjmp.h>
], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
if test $gdb_cv_func_sigsetjmp = yes; then
AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
fi
introduce common.m4 It has bothered me for a while that files in common/ use macros defined via autoconf checks, but rely on each configure.ac doing the proper checks independently. This patch introduces common/common.m4 which consolidates the checks assumed by code in common. The rule I propose is that if something is needed or used by common, it should be checked for by common.m4. However, if the check is also needed by gdb or gdbserver, then it should be duplicated there. Built and regtested on x86-64 Fedora 18 (though this is hardly the most strenuous case) and using the Fedora 18 mingw cross compilers. I also examined the config.in diffs to ensure that symbols did not go missing. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4. * common/common.m4: New file. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON. 2013-11-08 Tom Tromey <tromey@redhat.com> * acinclude.m4: Include common.m4, codeset.m4. * configure, config.in: Rebuild. * configure.ac: Use GDB_AC_COMMON.
2013-04-24 18:45:45 +02:00
])