ptrace_machdep.c

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    1 /*-
    2  * Copyright (c) 2017 John Baldwin <jhb@FreeBSD.org>
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  *
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include <sys/types.h>
   31 #include <sys/proc.h>
   32 #include <sys/ptrace.h>
   33 #ifdef VFP
   34 #include <machine/vfp.h>
   35 #endif
   36 
   37 int
   38 cpu_ptrace(struct thread *td, int req, void *addr, int data)
   39 {
   40 #ifdef VFP
   41         mcontext_vfp_t vfp;
   42 #endif
   43         int error;
   44 
   45         switch (req) {
   46 #ifdef VFP
   47         case PT_GETVFPREGS:
   48                 get_vfpcontext(td, &vfp);
   49                 error = copyout(&vfp, addr, sizeof(vfp));
   50                 break;
   51         case PT_SETVFPREGS:
   52                 error = copyin(addr, &vfp, sizeof(vfp));
   53                 if (error == 0)
   54                         set_vfpcontext(td, &vfp);
   55                 break;
   56 #endif
   57         default:
   58                 error = EINVAL;
   59         }
   60 
   61         return (error);
   62 }

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FreeBSD/Linux Kernel Cross Reference sys/arm/arm/ptrace_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/arm/arm/ptrace_machdep.c