Add support for the x86 XSAVE extended state on FreeBSD/x86.

[deliverable/binutils-gdb.git] / gdb / amd64bsd-nat.c

diff --git a/gdb/amd64bsd-nat.c b/gdb/amd64bsd-nat.c
index b4c5818a55b874f97e7aa2afdbcadc85f5cac147..66d42894bd41222a38e59caf8cb897ddfc9bc004 100644 (file)
--- a/gdb/amd64bsd-nat.c
+++ b/gdb/amd64bsd-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for AMD64 BSD's.
 
-   Copyright (C) 2003-2013 Free Software Foundation, Inc.
+   Copyright (C) 2003-2015 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -24,7 +24,6 @@
 
 /* We include <signal.h> to make sure `struct fxsave64' is defined on
    NetBSD, since NetBSD's <machine/reg.h> needs it.  */
-#include "gdb_assert.h"
 #include <signal.h>
 #include <sys/types.h>
 #include <sys/ptrace.h>
@@ -36,6 +35,10 @@
 #include "inf-ptrace.h"
 \f
 
+#ifdef PT_GETXSTATE_INFO
+size_t amd64bsd_xsave_len;
+#endif
+
 /* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
    for all registers (including the floating-point registers).  */
 
@@ -61,6 +64,20 @@ amd64bsd_fetch_inferior_registers (struct target_ops *ops,
   if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
     {
       struct fpreg fpregs;
+#ifdef PT_GETXSTATE_INFO
+      char *xstateregs;
+
+      if (amd64bsd_xsave_len != 0)
+       {
+         xstateregs = alloca (amd64bsd_xsave_len);
+         if (ptrace (PT_GETXSTATE, ptid_get_pid (inferior_ptid),
+                     (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
+           perror_with_name (_("Couldn't get extended state status"));
+
+         amd64_supply_xsave (regcache, -1, xstateregs);
+         return;
+       }
+#endif
 
       if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
                  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
@@ -100,6 +117,24 @@ amd64bsd_store_inferior_registers (struct target_ops *ops,
   if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
     {
       struct fpreg fpregs;
+#ifdef PT_GETXSTATE_INFO
+      char *xstateregs;
+
+      if (amd64bsd_xsave_len != 0)
+       {
+         xstateregs = alloca (amd64bsd_xsave_len);
+         if (ptrace (PT_GETXSTATE, ptid_get_pid (inferior_ptid),
+                     (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
+           perror_with_name (_("Couldn't get extended state status"));
+
+         amd64_collect_xsave (regcache, regnum, xstateregs, 0);
+
+         if (ptrace (PT_SETXSTATE, ptid_get_pid (inferior_ptid),
+                     (PTRACE_TYPE_ARG3) xstateregs, amd64bsd_xsave_len) == -1)
+           perror_with_name (_("Couldn't write extended state status"));
+         return;
+       }
+#endif
 
       if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
                  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)