gdb/

[deliverable/binutils-gdb.git] / gdb / amd64-linux-nat.c

diff --git a/gdb/amd64-linux-nat.c b/gdb/amd64-linux-nat.c
index 149ba2fc674576191499b31ea5b3ed86083b9ef7..9ccd3b2e9fe91b62287673cbbdaa84af1c7da5f9 100644 (file)
--- a/gdb/amd64-linux-nat.c
+++ b/gdb/amd64-linux-nat.c
@@ -270,6 +270,8 @@ amd64_linux_dr_get (ptid_t ptid, int regnum)
   return value;
 }
 
+/* Set debug register REGNUM to VALUE in only the one LWP of PTID.  */
+
 static void
 amd64_linux_dr_set (ptid_t ptid, int regnum, unsigned long value)
 {
@@ -286,6 +288,8 @@ amd64_linux_dr_set (ptid_t ptid, int regnum, unsigned long value)
     perror_with_name (_("Couldn't write debug register"));
 }
 
+/* Set DR_CONTROL to ADDR in all LWPs of LWP_LIST.  */
+
 static void
 amd64_linux_dr_set_control (unsigned long control)
 {
@@ -297,6 +301,8 @@ amd64_linux_dr_set_control (unsigned long control)
     amd64_linux_dr_set (ptid, DR_CONTROL, control);
 }
 
+/* Set address REGNUM (zero based) to ADDR in all LWPs of LWP_LIST.  */
+
 static void
 amd64_linux_dr_set_addr (int regnum, CORE_ADDR addr)
 {
@@ -310,18 +316,41 @@ amd64_linux_dr_set_addr (int regnum, CORE_ADDR addr)
     amd64_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr);
 }
 
+/* Set address REGNUM (zero based) to zero in all LWPs of LWP_LIST.  */
+
 static void
 amd64_linux_dr_reset_addr (int regnum)
 {
   amd64_linux_dr_set_addr (regnum, 0);
 }
 
+/* Get DR_STATUS from only the one LWP of INFERIOR_PTID.  */
+
 static unsigned long
 amd64_linux_dr_get_status (void)
 {
   return amd64_linux_dr_get (inferior_ptid, DR_STATUS);
 }
 
+/* Unset MASK bits in DR_STATUS in all LWPs of LWP_LIST.  */
+
+static void
+amd64_linux_dr_unset_status (unsigned long mask)
+{
+  struct lwp_info *lp;
+  ptid_t ptid;
+
+  ALL_LWPS (lp, ptid)
+    {
+      unsigned long value;
+      
+      value = amd64_linux_dr_get (ptid, DR_STATUS);
+      value &= ~mask;
+      amd64_linux_dr_set (ptid, DR_STATUS, value);
+    }
+}
+
+
 static void
 amd64_linux_new_thread (ptid_t ptid)
 {
@@ -341,7 +370,7 @@ ps_err_e
 ps_get_thread_area (const struct ps_prochandle *ph,
                     lwpid_t lwpid, int idx, void **base)
 {
-  if (gdbarch_ptr_bit (current_gdbarch) == 32)
+  if (gdbarch_ptr_bit (target_gdbarch) == 32)
     {
       /* The full structure is found in <asm-i386/ldt.h>.  The second
         integer is the LDT's base_address and that is used to locate
@@ -672,6 +701,7 @@ _initialize_amd64_linux_nat (void)
   i386_dr_low.set_addr = amd64_linux_dr_set_addr;
   i386_dr_low.reset_addr = amd64_linux_dr_reset_addr;
   i386_dr_low.get_status = amd64_linux_dr_get_status;
+  i386_dr_low.unset_status = amd64_linux_dr_unset_status;
   i386_set_debug_register_length (8);
 
   /* Override the GNU/Linux inferior startup hook.  */