hurd: Move some i386 bits to x86

As they will actually be usable on x86_64 too.

3 files changed, 151 insertions, 0 deletions

diff --git a/sysdeps/mach/x86/bits/mach/param.h b/sysdeps/mach/x86/bits/mach/param.h
new file mode 100644
index 0000000000..cef2bdb165
--- /dev/null
+++ b/sysdeps/mach/x86/bits/mach/param.h
@@ -0,0 +1,25 @@
+/* Old-style Unix parameters and limits.  x86 Mach version.
+   Copyright (C) 1993-2023 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
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_PARAM_H
+# error "Never use <bits/mach/param.h> directly; include <sys/param.h> instead."
+#endif
+
+#ifndef EXEC_PAGESIZE
+#define EXEC_PAGESIZE	4096
+#endif
diff --git a/sysdeps/mach/x86/machine-lock.h b/sysdeps/mach/x86/machine-lock.h
new file mode 100644
index 0000000000..6ce884a8c3
--- /dev/null
+++ b/sysdeps/mach/x86/machine-lock.h
@@ -0,0 +1,79 @@
+/* Machine-specific definition for spin locks.  x86 version.
+   Copyright (C) 1994-2023 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
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MACHINE_LOCK_H
+#define	_MACHINE_LOCK_H
+
+/* The type of a spin lock variable.  */
+
+typedef volatile int __spin_lock_t;
+
+/* Value to initialize `__spin_lock_t' variables to.  */
+
+#define	__SPIN_LOCK_INITIALIZER	0
+
+
+#ifndef _EXTERN_INLINE
+#define _EXTERN_INLINE __extern_inline
+#endif
+
+/* Unlock LOCK.  */
+
+extern void __spin_unlock (__spin_lock_t *__lock);
+
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+_EXTERN_INLINE void
+__spin_unlock (__spin_lock_t *__lock)
+{
+   register int __unlocked;
+   __asm__ __volatile ("xchgl %0, %1"
+		       : "=&r" (__unlocked), "=m" (*__lock) : "0" (0)
+		       : "memory");
+}
+#endif
+
+/* Try to lock LOCK; return nonzero if we locked it, zero if another has.  */
+
+extern int __spin_try_lock (__spin_lock_t *__lock);
+
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+_EXTERN_INLINE int
+__spin_try_lock (__spin_lock_t *__lock)
+{
+  register int __locked;
+  __asm__ __volatile ("xchgl %0, %1"
+		      : "=&r" (__locked), "=m" (*__lock) : "0" (1)
+		      : "memory");
+  return !__locked;
+}
+#endif
+
+/* Return nonzero if LOCK is locked.  */
+
+extern int __spin_lock_locked (__spin_lock_t *__lock);
+
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+_EXTERN_INLINE int
+__spin_lock_locked (__spin_lock_t *__lock)
+{
+  return *__lock != 0;
+}
+#endif
+
+
+#endif /* machine-lock.h */
diff --git a/sysdeps/mach/x86/sysdep.h b/sysdeps/mach/x86/sysdep.h
new file mode 100644
index 0000000000..90f295b27d
--- /dev/null
+++ b/sysdeps/mach/x86/sysdep.h
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991-2023 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
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MACH_X86_SYSDEP_H
+#define _MACH_X86_SYSDEP_H 1
+
+/* Defines RTLD_PRIVATE_ERRNO and USE_DL_SYSINFO.  */
+#include <dl-sysdep.h>
+#include <tls.h>
+
+#define LOSE asm volatile ("hlt")
+
+#define SNARF_ARGS(entry_sp, argc, argv, envp)				      \
+  do									      \
+    {									      \
+      char **p;								      \
+      argc = (int) *entry_sp;						      \
+      argv = (char **) (entry_sp + 1);					      \
+      p = argv;								      \
+      while (*p++ != NULL)						      \
+	;								      \
+      if (p >= (char **) argv[0])					      \
+	--p;								      \
+      envp = p;							      \
+    } while (0)
+
+#define STACK_GROWTH_DOWN
+
+/* Get the machine-independent Mach definitions.  */
+#include <sysdeps/mach/sysdep.h>
+
+#endif /* mach/x86/sysdep.h */