metag: Remove arch/metag/

The earliest Meta architecture port of Linux I have a record of was an
import of a Meta port of Linux v2.4.1 in February 2004, which was worked
on significantly over the next few years by Graham Whaley, Will Newton,
Matt Fleming, myself and others.

Eventually the port was merged into mainline in v3.9 in March 2013, not
long after Imagination Technologies bought MIPS Technologies and shifted
its CPU focus over to the MIPS architecture.

As a result, though the port was maintained for a while, kept on life
support for a while longer, and useful for testing a few specific
drivers for which I don't have ready access to the equivalent MIPS
hardware, it is now essentially dead with no users.

It is also stuck using an out-of-tree toolchain based on GCC 4.2.4 which
is no longer maintained, now struggles to build modern kernels due to
toolchain bugs, and doesn't itself build with a modern GCC. The latest
buildroot port is still using an old uClibc snapshot which is no longer
served, and the latest uClibc doesn't build with GCC 4.2.4.

So lets call it a day and drop the Meta architecture port from the
kernel. RIP Meta.

Signed-off-by: James Hogan <jhogan@kernel.org>
Link: https://lkml.kernel.org/r/95906b76-6ce1-3f84-eaba-c29b4ae952eb@roeck-us.net
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Graham Whaley <graham.whaley@gmail.com>
Cc: linux-metag@vger.kernel.org

1 files changed, 0 insertions, 61 deletions

diff --git a/arch/metag/include/asm/ptrace.h b/arch/metag/include/asm/ptrace.h
deleted file mode 100644
index 9074f25..0000000
--- a/arch/metag/include/asm/ptrace.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _METAG_PTRACE_H
-#define _METAG_PTRACE_H
-
-#include <linux/compiler.h>
-#include <uapi/asm/ptrace.h>
-#include <asm/tbx.h>
-
-#ifndef __ASSEMBLY__
-
-/* this struct defines the way the registers are stored on the
-   stack during a system call. */
-
-struct pt_regs {
-	TBICTX ctx;
-	TBICTXEXTCB0 extcb0[5];
-};
-
-#define user_mode(regs) (((regs)->ctx.SaveMask & TBICTX_PRIV_BIT) > 0)
-
-#define instruction_pointer(regs) ((unsigned long)(regs)->ctx.CurrPC)
-#define profile_pc(regs) instruction_pointer(regs)
-
-#define task_pt_regs(task) \
-	((struct pt_regs *)(task_stack_page(task) + \
-			    sizeof(struct thread_info)))
-
-#define current_pt_regs() \
-	((struct pt_regs *)((char *)current_thread_info() + \
-			    sizeof(struct thread_info)))
-
-int syscall_trace_enter(struct pt_regs *regs);
-void syscall_trace_leave(struct pt_regs *regs);
-
-/* copy a struct user_gp_regs out to user */
-int metag_gp_regs_copyout(const struct pt_regs *regs,
-			  unsigned int pos, unsigned int count,
-			  void *kbuf, void __user *ubuf);
-/* copy a struct user_gp_regs in from user */
-int metag_gp_regs_copyin(struct pt_regs *regs,
-			 unsigned int pos, unsigned int count,
-			 const void *kbuf, const void __user *ubuf);
-/* copy a struct user_cb_regs out to user */
-int metag_cb_regs_copyout(const struct pt_regs *regs,
-			  unsigned int pos, unsigned int count,
-			  void *kbuf, void __user *ubuf);
-/* copy a struct user_cb_regs in from user */
-int metag_cb_regs_copyin(struct pt_regs *regs,
-			 unsigned int pos, unsigned int count,
-			 const void *kbuf, const void __user *ubuf);
-/* copy a struct user_rp_state out to user */
-int metag_rp_state_copyout(const struct pt_regs *regs,
-			   unsigned int pos, unsigned int count,
-			   void *kbuf, void __user *ubuf);
-/* copy a struct user_rp_state in from user */
-int metag_rp_state_copyin(struct pt_regs *regs,
-			  unsigned int pos, unsigned int count,
-			  const void *kbuf, const void __user *ubuf);
-
-#endif /* __ASSEMBLY__ */
-#endif /* _METAG_PTRACE_H */