Don't print symbol on address 0x0

[deliverable/binutils-gdb.git] / gdb / i386-linux-nat.c

diff --git a/gdb/i386-linux-nat.c b/gdb/i386-linux-nat.c
index 9c990361135aba3d5c2b06d1a3a18764acf0dbf7..ff96501d4d50b9b0406b7b887244ffa04e4276ab 100644 (file)
--- a/gdb/i386-linux-nat.c
+++ b/gdb/i386-linux-nat.c
@@ -25,7 +25,7 @@
 #include "regset.h"
 #include "target.h"
 #include "linux-nat.h"
-#include "linux-btrace.h"
+#include "nat/linux-btrace.h"
 #include "btrace.h"
 
 #include "gdb_assert.h"
@@ -102,7 +102,7 @@ static int have_ptrace_getregset = -1;
   (I386_ST0_REGNUM <= (regno) && (regno) < I386_SSE_NUM_REGS)
 
 #define GETXSTATEREGS_SUPPLIES(regno) \
-  (I386_ST0_REGNUM <= (regno) && (regno) < I386_MPX_NUM_REGS)
+  (I386_ST0_REGNUM <= (regno) && (regno) < I386_AVX512_NUM_REGS)
 
 /* Does the current host support the GETREGS request?  */
 int have_ptrace_getregs =
@@ -778,6 +778,8 @@ i386_linux_prepare_to_resume (struct lwp_info *lwp)
       /* See amd64_linux_prepare_to_resume for Linux kernel note on
         i386_linux_dr_set calls ordering.  */
 
+      i386_linux_dr_set (lwp->ptid, DR_CONTROL, 0);
+
       for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++)
        if (state->dr_ref_count[i] > 0)
          {
@@ -790,7 +792,8 @@ i386_linux_prepare_to_resume (struct lwp_info *lwp)
            clear_status = 1;
          }
 
-      i386_linux_dr_set (lwp->ptid, DR_CONTROL, state->dr_control_mirror);
+      if (state->dr_control_mirror != 0)
+       i386_linux_dr_set (lwp->ptid, DR_CONTROL, state->dr_control_mirror);
 
       lwp->arch_private->debug_registers_changed = 0;
     }
@@ -1046,6 +1049,9 @@ i386_linux_read_description (struct target_ops *ops)
     {
       switch ((xcr0 & I386_XSTATE_ALL_MASK))
        {
+       case I386_XSTATE_MPX_AVX512_MASK:
+       case I386_XSTATE_AVX512_MASK:
+         return tdesc_i386_avx512_linux;
        case I386_XSTATE_MPX_MASK:
          return tdesc_i386_mpx_linux;
        case I386_XSTATE_AVX_MASK:
@@ -1095,12 +1101,22 @@ i386_linux_disable_btrace (struct target_ops *self,
 /* Teardown branch tracing.  */
 
 static void
-i386_linux_teardown_btrace (struct btrace_target_info *tinfo)
+i386_linux_teardown_btrace (struct target_ops *self,
+                           struct btrace_target_info *tinfo)
 {
   /* Ignore errors.  */
   linux_disable_btrace (tinfo);
 }
 
+static enum btrace_error
+i386_linux_read_btrace (struct target_ops *self,
+                       VEC (btrace_block_s) **data,
+                       struct btrace_target_info *btinfo,
+                       enum btrace_read_type type)
+{
+  return linux_read_btrace (data, btinfo, type);
+}
+
 /* -Wmissing-prototypes */
 extern initialize_file_ftype _initialize_i386_linux_nat;
 
@@ -1139,7 +1155,7 @@ _initialize_i386_linux_nat (void)
   t->to_enable_btrace = i386_linux_enable_btrace;
   t->to_disable_btrace = i386_linux_disable_btrace;
   t->to_teardown_btrace = i386_linux_teardown_btrace;
-  t->to_read_btrace = linux_read_btrace;
+  t->to_read_btrace = i386_linux_read_btrace;
 
   /* Register the target.  */
   linux_nat_add_target (t);