Complete sys/procfs.h unification.

This patch completes the process of unifying sys/procfs.h headers for
architectures using the Linux kernel by making alpha use the generic
version.

That was previously deferred because alpha has different definitions
of prgregset_t and prfpregset_t from other architectures, so changing
to the common definitions would change C++ name mangling.  To avoid
such a change, a header bits/procfs-prregset.h is added, and alpha
gets its own version of that header.

Tested for x86_64 and x86, and with build-many-glibcs.py.

	* sysdeps/unix/sysv/linux/sys/procfs.h: Include
	<bits/procfs-prregset.h>.
	(prgregset_t): Define using __prgregset_t.
	(prfpregset_t): Define using __prfpregset_t.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir) = misc]
	(sysdep_headers): Add bits/procfs-prregset.h.
	* sysdeps/unix/sysv/linux/bits/procfs-prregset.h: New file.
	* sysdeps/unix/sysv/linux/alpha/bits/procfs-prregset.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/procfs.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sys/procfs.h: Remove file.

6 files changed, 94 insertions, 130 deletions

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index db5b17fcb7..99d71ea296 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -41,7 +41,8 @@ sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \
 		  bits/socket_type.h bits/syscall.h bits/sysctl.h \
 		  bits/mman-linux.h bits/mman-shared.h bits/ptrace-shared.h \
 		  bits/siginfo-arch.h bits/siginfo-consts-arch.h \
-		  bits/procfs.h bits/procfs-id.h bits/procfs-extra.h
+		  bits/procfs.h bits/procfs-id.h bits/procfs-extra.h \
+		  bits/procfs-prregset.h
 
 tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
 	 tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/procfs-prregset.h b/sysdeps/unix/sysv/linux/alpha/bits/procfs-prregset.h
new file mode 100644
index 0000000000..2f17e62a3f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/bits/procfs-prregset.h
@@ -0,0 +1,25 @@
+/* Types of prgregset_t and prfpregset_t.  Alpha version.
+   Copyright (C) 2018 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; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_PROCFS_H
+# error "Never include <bits/procfs-prregset.h> directly; use <sys/procfs.h> instead."
+#endif
+
+typedef gregset_t __prgregset_t;
+typedef fpregset_t __prfpregset_t;
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/procfs.h b/sysdeps/unix/sysv/linux/alpha/bits/procfs.h
new file mode 100644
index 0000000000..4e7790b2ed
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/bits/procfs.h
@@ -0,0 +1,38 @@
+/* Types for registers for sys/procfs.h.  Alpha version.
+   Copyright (C) 1996-2018 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.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_PROCFS_H
+# error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead."
+#endif
+
+#include <signal.h>
+#include <sys/ucontext.h>
+
+/*
+ * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.
+ * I have no idea why that is so.  For now, we just leave it at 33
+ * (32 general regs + processor status word).
+ */
+#define ELF_NGREG       33
+#define ELF_NFPREG      32
+
+typedef unsigned long elf_greg_t;
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef double elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
diff --git a/sysdeps/unix/sysv/linux/alpha/sys/procfs.h b/sysdeps/unix/sysv/linux/alpha/sys/procfs.h
deleted file mode 100644
index a6cbb025fb..0000000000
--- a/sysdeps/unix/sysv/linux/alpha/sys/procfs.h
+++ /dev/null
@@ -1,127 +0,0 @@
-/* Copyright (C) 1996-2018 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.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_PROCFS_H
-#define _SYS_PROCFS_H	1
-
-/* This is somehow modelled after the file of the same name on SysVr4
-   systems.  It provides a definition of the core file format for ELF
-   used on Linux.  */
-
-#include <features.h>
-#include <signal.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/ucontext.h>
-#include <sys/user.h>
-
-__BEGIN_DECLS
-
-/*
- * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.
- * I have no idea why that is so.  For now, we just leave it at 33
- * (32 general regs + processor status word).
- */
-#define ELF_NGREG       33
-#define ELF_NFPREG      32
-
-typedef unsigned long elf_greg_t;
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-typedef double elf_fpreg_t;
-typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
-
-struct elf_siginfo
-  {
-    int si_signo;			/* Signal number.  */
-    int si_code;			/* Extra code.  */
-    int si_errno;			/* Errno.  */
-  };
-
-/* Definitions to generate Intel SVR4-like core files.  These mostly
-   have the same names as the SVR4 types with "elf_" tacked on the
-   front to prevent clashes with linux definitions, and the typedef
-   forms have been avoided.  This is mostly like the SVR4 structure,
-   but more Linuxy, with things that Linux does not support and which
-   gdb doesn't really use excluded.  Fields present but not used are
-   marked with "XXX".  */
-struct elf_prstatus
-  {
-#if 0
-    long int pr_flags;			/* XXX Process flags.  */
-    short int pr_why;			/* XXX Reason for process halt.  */
-    short int pr_what;			/* XXX More detailed reason.  */
-#endif
-    struct elf_siginfo pr_info;		/* Info associated with signal.  */
-    short int pr_cursig;		/* Current signal.  */
-    unsigned long int pr_sigpend;	/* Set of pending signals.  */
-    unsigned long int pr_sighold;	/* Set of held signals.  */
-#if 0
-    stack_t pr_altstack;		/* Alternate stack info.  */
-    struct sigaction pr_action;		/* Signal action for current sig.  */
-#endif
-    __pid_t pr_pid;
-    __pid_t pr_ppid;
-    __pid_t pr_pgrp;
-    __pid_t pr_sid;
-    struct timeval pr_utime;		/* User time.  */
-    struct timeval pr_stime;		/* System time.  */
-    struct timeval pr_cutime;		/* Cumulative user time.  */
-    struct timeval pr_cstime;		/* Cumulative system time.  */
-#if 0
-    long int pr_instr;			/* Current instruction.  */
-#endif
-    elf_gregset_t pr_reg;		/* GP registers.  */
-    int pr_fpvalid;			/* True if math copro being used.  */
-  };
-
-
-#define ELF_PRARGSZ     (80)    /* Number of chars for args */
-
-struct elf_prpsinfo
-  {
-    char pr_state;			/* Numeric process state.  */
-    char pr_sname;			/* Char for pr_state.  */
-    char pr_zomb;			/* Zombie.  */
-    char pr_nice;			/* Nice val.  */
-    unsigned long int pr_flag;		/* Flags.  */
-    unsigned int pr_uid;
-    unsigned int pr_gid;
-    int pr_pid, pr_ppid, pr_pgrp, pr_sid;
-    /* Lots missing */
-    char pr_fname[16];			/* Filename of executable.  */
-    char pr_psargs[ELF_PRARGSZ];	/* Initial part of arg list.  */
-  };
-
-/* Addresses.  */
-typedef void *psaddr_t;
-
-/* Register sets.  Linux has different names.  */
-typedef gregset_t prgregset_t;
-typedef fpregset_t prfpregset_t;
-
-/* We don't have any differences between processes and threads,
-   therefore habe only ine PID type.  */
-typedef __pid_t lwpid_t;
-
-
-typedef struct elf_prstatus prstatus_t;
-typedef struct elf_prpsinfo prpsinfo_t;
-
-__END_DECLS
-
-#endif	/* sys/procfs.h */
diff --git a/sysdeps/unix/sysv/linux/bits/procfs-prregset.h b/sysdeps/unix/sysv/linux/bits/procfs-prregset.h
new file mode 100644
index 0000000000..01293400ef
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/procfs-prregset.h
@@ -0,0 +1,25 @@
+/* Types of prgregset_t and prfpregset_t.  Generic Linux version.
+   Copyright (C) 2018 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; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_PROCFS_H
+# error "Never include <bits/procfs-prregset.h> directly; use <sys/procfs.h> instead."
+#endif
+
+typedef elf_gregset_t __prgregset_t;
+typedef elf_fpregset_t __prfpregset_t;
diff --git a/sysdeps/unix/sysv/linux/sys/procfs.h b/sysdeps/unix/sysv/linux/sys/procfs.h
index 6ef577e291..b8fe489720 100644
--- a/sysdeps/unix/sysv/linux/sys/procfs.h
+++ b/sysdeps/unix/sysv/linux/sys/procfs.h
@@ -103,9 +103,11 @@ struct elf_prpsinfo
 /* Addresses.  */
 typedef void *psaddr_t;
 
+#include <bits/procfs-prregset.h>
+
 /* Register sets.  Linux has different names.  */
-typedef elf_gregset_t prgregset_t;
-typedef elf_fpregset_t prfpregset_t;
+typedef __prgregset_t prgregset_t;
+typedef __prfpregset_t prfpregset_t;
 
 /* We don't have any differences between processes and threads,
    therefore have only one PID type.  */