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diff --git a/misc/sys/ptrace.h b/misc/sys/ptrace.h
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+++ b/misc/sys/ptrace.h
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+/* Copyright (C) 1991, 1992 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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#ifndef	_PTRACE_H
+
+#define	_PTRACE_H	1
+#include <features.h>
+
+__BEGIN_DECLS
+
+
+/* Type of the REQUEST argument to `ptrace.'  */
+enum __ptrace_request
+{
+  /* Indicate that the process making this request should be traced.
+     All signals received by this process can be intercepted by its
+     parent, and its parent can use the other `ptrace' requests.  */
+  PTRACE_TRACEME = 0,
+#define PT_TRACE_ME PTRACE_TRACEME
+
+  /* Return the word in the process's text space at address ADDR.  */
+  PTRACE_PEEKTEXT,
+#define PT_READ_I PTRACE_PEEKTEXT
+
+  /* Return the word in the process's data space at address ADDR.  */
+  PTRACE_PEEKDATA,
+#define PT_READ_D PTRACE_PEEKDATA
+
+  /* Return the word in the process's user area at offset ADDR.  */
+  PTRACE_PEEKUSER,
+#define PT_READ_U PTRACE_PEEKUSER
+
+  /* Write the word DATA into the process's text space at address ADDR.  */
+  PTRACE_POKETEXT,
+#define PT_WRITE_I PTRACE_POKETEXT
+
+  /* Write the word DATA into the process's data space at address ADDR.  */
+  PTRACE_POKEDATA,
+#define PT_WRITE_D PTRACE_POKEDATA
+
+  /* Write the word DATA into the process's user space at offset ADDR.  */
+  PTRACE_POKEUSER,
+#define PT_WRITE_U PTRACE_POKEUSER
+
+  /* Continue the process.  */
+  PTRACE_CONT,
+#define PT_CONTINUE PTRACE_CONT
+
+  /* Kill the process.  */
+  PTRACE_KILL,
+#define PT_KILL PTRACE_KILL
+
+  /* Single step the process.
+     This is not supported on all machines.  */
+  PTRACE_SINGLESTEP,
+#define PT_STEP PTRACE_SINGLESTEP
+
+  /* Attach to a process that is already running. */
+  PTRACE_ATTACH,
+#define PT_ATTACH PTRACE_ATTACH
+
+  /* Detach from a process attached to with PTRACE_ATTACH.  */
+  PTRACE_DETACH,
+#define PT_DETACH PTRACE_DETACH
+
+  /* Get the process's registers (not including floating-point registers)
+     and put them in the `struct regs' (see <machine/regs.h>) at ADDR.  */
+  PTRACE_GETREGS = 12,
+
+  /* Set the process's registers (not including floating-point registers)
+     to the contents of the `struct regs' (see <machine/regs.h>) at ADDR.  */
+  PTRACE_SETREGS,
+
+  /* Get the process's floating point registers and put them
+     in the `struct fp_status' (see <machine/regs.h>) at ADDR.  */
+  PTRACE_GETFPREGS = 14,
+
+  /* Set the process's floating point registers to the contents
+     of the `struct fp_status' (see <machine/regs.h>) at ADDR.  */
+  PTRACE_SETFPREGS,
+
+  /* Read DATA bytes from the process's data space at address ADDR.
+     Put the result starting at address ADDR2 in the caller's
+     address space.  */
+  PTRACE_READDATA = 16,
+
+  /* Write DATA bytes from ADDR2 in the caller's address space into
+     the process's data space at address ADDR.  */
+  PTRACE_WRITEDATA,
+
+  /* Read DATA bytes from the process's text space at address ADDR.
+     Put the result starting at address ADDR2 in the caller's
+     address space.  */
+  PTRACE_READTEXT = 18,
+
+  /* Write DATA bytes from ADDR2 in the caller's address space into
+     the process's text space at address ADDR.  */
+  PTRACE_WRITETEXT,
+
+  /* Read the floating-point accelerator unit registers and
+     put them into the `struct fpa_regs' (see <machine/regs.h>) at ADDR.  */
+  PTRACE_GETFPAREGS = 20,
+
+  /* Write the floating-point accelerator unit registers from
+     the contents of the `struct fpa_regs' at ADDR.  */
+  PTRACE_SETFPAREGS,
+};
+
+/* Perform process tracing functions.  REQUEST is one of the values
+   above, and determines the action to be taken.
+   For all requests except PTRACE_TRACEME, PID specifies the process to be
+   traced.
+
+   PID and the other arguments described above for the various requests should
+   appear (those that are used for the particular request) as:
+     pid_t PID, void *ADDR, int DATA, void *ADDR2
+   after REQUEST.  */
+extern int ptrace __P ((enum __ptrace_request __request __DOTS));
+
+__END_DECLS
+
+#endif /* ptrace.h */