Linux: Define TIMER_T_WAS_INT_COMPAT in kernel-posix-timers.h

This is almost equivalent to __WORDSIZE == 64
&& OTHER_SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_3_3), except
that this expression is true for mips64/n64 targets as well,
even though those did not undergo the timer_t transition.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

8 files changed, 138 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/alpha/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/alpha/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..92840d92aa
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/timer_t_was_int_compat.h
@@ -0,0 +1,19 @@
+/* timer_t/int compatibility transition.  alpha version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#define TIMER_T_WAS_INT_COMPAT 1
diff --git a/sysdeps/unix/sysv/linux/ia64/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/ia64/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..eb7e08c7cc
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ia64/timer_t_was_int_compat.h
@@ -0,0 +1,19 @@
+/* timer_t/int compatibility transition.  ia64 version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#define TIMER_T_WAS_INT_COMPAT 1
diff --git a/sysdeps/unix/sysv/linux/kernel-posix-timers.h b/sysdeps/unix/sysv/linux/kernel-posix-timers.h
index 17fc32d48f..86aa8a2ded 100644
--- a/sysdeps/unix/sysv/linux/kernel-posix-timers.h
+++ b/sysdeps/unix/sysv/linux/kernel-posix-timers.h
@@ -103,3 +103,7 @@ timerid_to_kernel_timer (timer_t timerid)
   else
     return (kernel_timer_t) ((uintptr_t) timerid);
 }
+
+/* New targets use int instead of timer_t.  The difference only
+   matters on 64-bit targets.  */
+#include <timer_t_was_int_compat.h>
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..dbb52c13d9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/timer_t_was_int_compat.h
@@ -0,0 +1,19 @@
+/* timer_t/int compatibility transition.  powerpc64 version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#define TIMER_T_WAS_INT_COMPAT 1
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/s390/s390-64/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..4ec28a2f9d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/timer_t_was_int_compat.h
@@ -0,0 +1,19 @@
+/* timer_t/int compatibility transition.  s390x version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#define TIMER_T_WAS_INT_COMPAT 1
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/sparc/sparc64/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..f4bacb63bb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/timer_t_was_int_compat.h
@@ -0,0 +1,19 @@
+/* timer_t/int compatibility transition.  sparc64 version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#define TIMER_T_WAS_INT_COMPAT 1
diff --git a/sysdeps/unix/sysv/linux/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..b1c7dd7354
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/timer_t_was_int_compat.h
@@ -0,0 +1,20 @@
+/* timer_t/int compatibility transition.  Generic version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+/* timer_t did not change size (from int to a pointer type).  */
+#define TIMER_T_WAS_INT_COMPAT 0
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/timer_t_was_int_compat.h b/sysdeps/unix/sysv/linux/x86_64/64/timer_t_was_int_compat.h
new file mode 100644
index 0000000000..9071028624
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/64/timer_t_was_int_compat.h
@@ -0,0 +1,19 @@
+/* timer_t/int compatibility transition.  x86_64 version.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#define TIMER_T_WAS_INT_COMPAT 1