[PATCH 1/2] FreeBSD/amd64: Updates for the recent changes that Pedro Alves made.

[Valery Khromov <valery.khromov@gmail.com>]

2011-12-20  Valery Khromov  <valery.khromov@gmail.com>

    * amd64bsd-nat.c (amd64bsd_dr_get): New.
    (amd64bsd_dr_reset_addr): Delete.
    (amd64bsd_dr_get_addr): New.
    (amd64bsd_dr_get_status): Use amd64bsd_dr_get.
    (amd64bsd_dr_get_control): New.
    * amd64bsd-nat.h (amd64bsd_dr_reset_addr): Delete.
    (amd64bsd_dr_get_addr): New.
    (amd64bsd_dr_get_control): New.
    * amd64fbsd-nat.c (_initialize_amd64fbsd_nat): No longer install
    i386_dr_low.reset_addr and i386_dr_low.unset_status.  Install
    amd64bsd_dr_get_control as i386_dr_low.get_control.  Install
    amd64bsd_dr_get_addr as i386_dr_low.get_addr.
---
 gdb/amd64bsd-nat.c  |   41 +++++++++++++++++++++--------------------
 gdb/amd64bsd-nat.h  |    4 +++-
 gdb/amd64fbsd-nat.c |    3 ++-
 3 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/gdb/amd64bsd-nat.c b/gdb/amd64bsd-nat.c
index 8b2f678..b31002f 100644
--- a/gdb/amd64bsd-nat.c
+++ b/gdb/amd64bsd-nat.c
@@ -138,6 +138,18 @@ amd64bsd_target (void)
 #define DBREG_DRX(d, x) ((&d->dr0)[x])
 #endif
 
+static unsigned long
+amd64bsd_dr_get (ptid_t ptid, int regnum)
+{
+  struct dbreg dbregs;
+
+  if (ptrace (PT_GETDBREGS, PIDGET (inferior_ptid),
+	      (PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
+    perror_with_name (_("Couldn't read debug registers"));
+
+  return DBREG_DRX ((&dbregs), regnum);
+}
+
 static void
 amd64bsd_dr_set (int regnum, unsigned long value)
 {
@@ -173,33 +185,22 @@ amd64bsd_dr_set_addr (int regnum, CORE_ADDR addr)
   amd64bsd_dr_set (regnum, addr);
 }
 
-void
-amd64bsd_dr_reset_addr (int regnum)
+CORE_ADDR
+amd64bsd_dr_get_addr (int regnum)
 {
-  gdb_assert (regnum >= 0 && regnum <= 4);
-
-  amd64bsd_dr_set (regnum, 0);
+  return amd64bsd_dr_get (inferior_ptid, regnum);
 }
 
 unsigned long
 amd64bsd_dr_get_status (void)
 {
-  struct dbreg dbregs;
-
-  /* FIXME: kettenis/2001-03-31: Calling perror_with_name if the
-     ptrace call fails breaks debugging remote targets.  The correct
-     way to fix this is to add the hardware breakpoint and watchpoint
-     stuff to the target vector.  For now, just return zero if the
-     ptrace call fails.  */
-  if (ptrace (PT_GETDBREGS, PIDGET (inferior_ptid),
-	      (PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
-#if 0
-    perror_with_name (_("Couldn't read debug registers"));
-#else
-    return 0;
-#endif
+  return amd64bsd_dr_get (inferior_ptid, 6);
+}
 
-  return DBREG_DRX ((&dbregs), 6);
+unsigned long
+amd64bsd_dr_get_control (void)
+{
+  return amd64bsd_dr_get (inferior_ptid, 7);
 }
 
 #endif /* PT_GETDBREGS */
diff --git a/gdb/amd64bsd-nat.h b/gdb/amd64bsd-nat.h
index 0048f54..25eb8d4 100644
--- a/gdb/amd64bsd-nat.h
+++ b/gdb/amd64bsd-nat.h
@@ -28,8 +28,10 @@ extern void amd64bsd_dr_set_control (unsigned long control);
 
 extern void amd64bsd_dr_set_addr (int regnum, CORE_ADDR addr);
 
-extern void amd64bsd_dr_reset_addr (int regnum);
+extern CORE_ADDR amd64bsd_dr_get_addr (int regnum);
 
 extern unsigned long amd64bsd_dr_get_status (void);
 
+extern unsigned long amd64bsd_dr_get_control (void);
+
 #endif /* amd64bsd-nat.h */
diff --git a/gdb/amd64fbsd-nat.c b/gdb/amd64fbsd-nat.c
index 8ffd42b..a0ff739 100644
--- a/gdb/amd64fbsd-nat.c
+++ b/gdb/amd64fbsd-nat.c
@@ -206,8 +206,9 @@ _initialize_amd64fbsd_nat (void)
 
   i386_dr_low.set_control = amd64bsd_dr_set_control;
   i386_dr_low.set_addr = amd64bsd_dr_set_addr;
-  i386_dr_low.reset_addr = amd64bsd_dr_reset_addr;
+  i386_dr_low.get_addr = amd64bsd_dr_get_addr;
   i386_dr_low.get_status = amd64bsd_dr_get_status;
+  i386_dr_low.get_control = amd64bsd_dr_get_control;
   i386_set_debug_register_length (8);
 
 #endif /* HAVE_PT_GETDBREGS */
-- 
WBR,
Valery Khromov