Support for Mach/PowerPC contributed by Peter Bruin <pjbruin@dds.nl>.

	* sysdeps/mach/powerpc/machine-sp.h: New file.
	* sysdeps/mach/powerpc/sysdep.h: New file.
	* sysdeps/mach/powerpc/thread_state.h: New file.

	* sysdeps/mach/hurd/i386/Makefile: File removed; crt0.o rules moved ...
	* sysdeps/mach/hurd/Makefile: ... to here.  For the time being, we can
	expect to need the same thing on every platform.

	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: File moved ...
	* sysdeps/generic/sys/ucontext.h: ... to replace this one.

3 files changed, 132 insertions, 0 deletions

diff --git a/sysdeps/mach/powerpc/machine-sp.h b/sysdeps/mach/powerpc/machine-sp.h
new file mode 100644
index 0000000000..949ccf1189
--- /dev/null
+++ b/sysdeps/mach/powerpc/machine-sp.h
@@ -0,0 +1,42 @@
+/* Machine-specific function to return the stack pointer.  PowerPC version.
+   Copyright (C) 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _MACHINE_SP_H
+#define _MACHINE_SP_H
+
+/* Return the current stack pointer.  */
+
+#ifndef _EXTERN_INLINE
+/* Make sure this function is included in hurd/threadvar-inlines.c.  */
+# ifdef _HURD_THREADVAR_H_EXTERN_INLINE
+#  define _EXTERN_INLINE _HURD_THREADVAR_H_EXTERN_INLINE
+# else
+#  define _EXTERN_INLINE extern __inline
+# endif
+#endif
+
+_EXTERN_INLINE void *
+__thread_stack_pointer (void)
+{
+  register void *__sp__;
+  __asm__ ("mr %0, 1" : "=r" (__sp__));
+  return __sp__;
+}
+
+#endif	/* machine-sp.h */
diff --git a/sysdeps/mach/powerpc/sysdep.h b/sysdeps/mach/powerpc/sysdep.h
new file mode 100644
index 0000000000..bd56c196da
--- /dev/null
+++ b/sysdeps/mach/powerpc/sysdep.h
@@ -0,0 +1,51 @@
+/* system call details for Mach on PowerPC
+   Copyright (C) 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _MACH_POWERPC_SYSDEP_H
+#define _MACH_POWERPC_SYSDEP_H
+
+#define START_ARGS char **sparg
+#define SNARF_ARGS(argc, argv, envp) \
+  do {                               \
+    argv = &sparg[1];                \
+    argc = *(int *)sparg;            \
+    envp = &argv[argc + 1];          \
+  } while (0)
+
+#define CALL_WITH_SP(fn, sp) \
+  do {                                                 \
+    register long __sp = (long) sp, __fn = (long) fn; \
+    asm volatile ("mr 1, %0; mtlr %1; blr"            \
+		  : : "r" (__sp), "r" (__fn));        \
+  } while (0)
+
+#define STACK_GROWTH_DOWN
+
+#define RETURN_TO(sp, pc, retval) \
+     asm volatile ("mr 1, %0; mtctr %1; mr 3, %2; bctr" \
+		   : : "r" (sp), "r" (pc), "r" (retval))
+
+/* Get the machine-independent Mach definitions.  */
+#include <sysdeps/mach/sysdep.h>
+
+#undef ENTRY
+#include <sysdeps/unix/sysdep.h>
+#include <sysdeps/powerpc/elf/sysdep.h>
+
+#endif  /* _MACH_POWERPC_SYSDEP_H */
diff --git a/sysdeps/mach/powerpc/thread_state.h b/sysdeps/mach/powerpc/thread_state.h
new file mode 100644
index 0000000000..883135189f
--- /dev/null
+++ b/sysdeps/mach/powerpc/thread_state.h
@@ -0,0 +1,39 @@
+/* Mach thread state definitions for machine-independent code.  PowerPC version
+   Copyright (C) 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <mach/machine/thread_status.h>
+
+#define MACHINE_THREAD_STATE_FLAVOR	PPC_THREAD_STATE
+#define MACHINE_THREAD_STATE_COUNT	PPC_THREAD_STATE_COUNT
+
+#define machine_thread_state ppc_thread_state
+
+#define PC srr0
+#define SP r1
+#define SYSRETURN r3
+
+struct machine_thread_all_state
+  {
+    int set;			/* Mask of bits (1 << FLAVOR).  */
+    struct ppc_thread_state basic;
+    struct ppc_exception_state exc;
+    struct ppc_float_state fpu;
+  };
+
+#include <sysdeps/mach/thread_state.h>