[27/31] gdbserver/linux-low: turn 'supports_range_stepping' into a method

diff --git a/gdbserver/linux-aarch64-low.cc b/gdbserver/linux-aarch64-low.cc
index d971cdc2f05..b88415fe16c 100644
--- a/gdbserver/linux-aarch64-low.cc
+++ b/gdbserver/linux-aarch64-low.cc
@@ -124,6 +124,8 @@  protected:
   void low_prepare_to_resume (lwp_info *lwp) override;
 
   int low_get_thread_area (int lwpid, CORE_ADDR *addrp) override;
+
+  bool low_supports_range_stepping () override;
 };
 
 /* The singleton target ops object.  */
@@ -3111,12 +3113,12 @@  aarch64_target::get_min_fast_tracepoint_insn_len ()
   return 4;
 }
 
-/* Implementation of linux_target_ops method "supports_range_stepping".  */
+/* Implementation of linux target ops method "low_supports_range_stepping".  */
 
-static int
-aarch64_supports_range_stepping (void)
+bool
+aarch64_target::low_supports_range_stepping ()
 {
-  return 1;
+  return true;
 }
 
 /* Implementation of target ops method "sw_breakpoint_from_kind".  */
@@ -3166,7 +3168,6 @@  aarch64_supports_hardware_single_step (void)
 
 struct linux_target_ops the_low_target =
 {
-  aarch64_supports_range_stepping,
   aarch64_supports_hardware_single_step,
   aarch64_get_syscall_trapinfo,
 };
diff --git a/gdbserver/linux-arm-low.cc b/gdbserver/linux-arm-low.cc
index 15a6350464c..d80b0f30178 100644
--- a/gdbserver/linux-arm-low.cc
+++ b/gdbserver/linux-arm-low.cc
@@ -1119,7 +1119,6 @@  arm_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   arm_supports_hardware_single_step,
   arm_get_syscall_trapinfo,
 };
diff --git a/gdbserver/linux-bfin-low.cc b/gdbserver/linux-bfin-low.cc
index 4ee7933256c..eb8ef2d4024 100644
--- a/gdbserver/linux-bfin-low.cc
+++ b/gdbserver/linux-bfin-low.cc
@@ -165,7 +165,6 @@  bfin_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   bfin_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-crisv32-low.cc b/gdbserver/linux-crisv32-low.cc
index 04301eee94d..05a435d69f9 100644
--- a/gdbserver/linux-crisv32-low.cc
+++ b/gdbserver/linux-crisv32-low.cc
@@ -470,7 +470,6 @@  crisv32_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   cris_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 499beab9740..a68eba11a37 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -6289,10 +6289,14 @@  linux_process_target::supports_range_stepping ()
 {
   if (supports_software_single_step ())
     return true;
-  if (*the_low_target.supports_range_stepping == NULL)
-    return false;
 
-  return (*the_low_target.supports_range_stepping) ();
+  return low_supports_range_stepping ();
+}
+
+bool
+linux_process_target::low_supports_range_stepping ()
+{
+  return false;
 }
 
 bool
diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h
index 104355f9594..02955d7b9b6 100644
--- a/gdbserver/linux-low.h
+++ b/gdbserver/linux-low.h
@@ -131,9 +131,6 @@  struct lwp_info;
 
 struct linux_target_ops
 {
-  /* Returns true if the low target supports range stepping.  */
-  int (*supports_range_stepping) (void);
-
   /* See target.h.  */
   int (*supports_hardware_single_step) (void);
 
@@ -680,6 +677,9 @@  class linux_process_target : public process_stratum_target
      success, -1 on failure.  */
   virtual int low_get_thread_area (int lwpid, CORE_ADDR *addrp);
 
+  /* Returns true if the low target supports range stepping.  */
+  virtual bool low_supports_range_stepping ();
+
   /* How many bytes the PC should be decremented after a break.  */
   int m_decr_pc_after_break;
 };
diff --git a/gdbserver/linux-m32r-low.cc b/gdbserver/linux-m32r-low.cc
index e45df01240d..330ea693dae 100644
--- a/gdbserver/linux-m32r-low.cc
+++ b/gdbserver/linux-m32r-low.cc
@@ -163,7 +163,6 @@  m32r_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   m32r_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-m68k-low.cc b/gdbserver/linux-m68k-low.cc
index be7c7141c10..a66e138614a 100644
--- a/gdbserver/linux-m68k-low.cc
+++ b/gdbserver/linux-m68k-low.cc
@@ -259,7 +259,6 @@  m68k_supports_hardware_single_step (void)
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   m68k_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-ppc-low.cc b/gdbserver/linux-ppc-low.cc
index 83e8a536ac9..af2610a173c 100644
--- a/gdbserver/linux-ppc-low.cc
+++ b/gdbserver/linux-ppc-low.cc
@@ -3456,7 +3456,6 @@  ppc_get_ipa_tdesc_idx (void)
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   ppc_supports_hardware_single_step,
   NULL, /* get_syscall_trapinfo */
   ppc_get_ipa_tdesc_idx,
diff --git a/gdbserver/linux-s390-low.cc b/gdbserver/linux-s390-low.cc
index b23cbf422e4..2f6217817f5 100644
--- a/gdbserver/linux-s390-low.cc
+++ b/gdbserver/linux-s390-low.cc
@@ -2857,7 +2857,6 @@  s390_target::emit_ops ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   s390_supports_hardware_single_step,
   NULL, /* get_syscall_trapinfo */
   s390_get_ipa_tdesc_idx,
diff --git a/gdbserver/linux-sh-low.cc b/gdbserver/linux-sh-low.cc
index 9fa76e92bc4..8777c3df27f 100644
--- a/gdbserver/linux-sh-low.cc
+++ b/gdbserver/linux-sh-low.cc
@@ -194,7 +194,6 @@  sh_target::low_arch_setup ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   sh_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-tic6x-low.cc b/gdbserver/linux-tic6x-low.cc
index 095ed99bc2e..bc17f3416c6 100644
--- a/gdbserver/linux-tic6x-low.cc
+++ b/gdbserver/linux-tic6x-low.cc
@@ -425,7 +425,6 @@  tic6x_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   tic6x_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-tile-low.cc b/gdbserver/linux-tile-low.cc
index 7250f6c3476..a4874053436 100644
--- a/gdbserver/linux-tile-low.cc
+++ b/gdbserver/linux-tile-low.cc
@@ -226,7 +226,6 @@  tile_supports_hardware_single_step (void)
 
 struct linux_target_ops the_low_target =
 {
-  NULL, /* supports_range_stepping */
   tile_supports_hardware_single_step,
 };
 
diff --git a/gdbserver/linux-x86-low.cc b/gdbserver/linux-x86-low.cc
index bf26742b66e..6aae77a032c 100644
--- a/gdbserver/linux-x86-low.cc
+++ b/gdbserver/linux-x86-low.cc
@@ -174,6 +174,8 @@  protected:
 
   int low_get_thread_area (int lwpid, CORE_ADDR *addrp) override;
 
+  bool low_supports_range_stepping () override;
+
 private:
 
   /* Update all the target description of all processes; a new GDB
@@ -2949,10 +2951,10 @@  x86_target::sw_breakpoint_from_kind (int kind, int *size)
   return x86_breakpoint;
 }
 
-static int
-x86_supports_range_stepping (void)
+bool
+x86_target::low_supports_range_stepping ()
 {
-  return 1;
+  return true;
 }
 
 /* Implementation of linux_target_ops method "supports_hardware_single_step".
@@ -2985,7 +2987,6 @@  x86_get_ipa_tdesc_idx (void)
 
 struct linux_target_ops the_low_target =
 {
-  x86_supports_range_stepping,
   x86_supports_hardware_single_step,
   x86_get_syscall_trapinfo,
   x86_get_ipa_tdesc_idx,
diff --git a/gdbserver/linux-xtensa-low.cc b/gdbserver/linux-xtensa-low.cc
index 4eb2b4b8524..a0482525ac4 100644
--- a/gdbserver/linux-xtensa-low.cc
+++ b/gdbserver/linux-xtensa-low.cc
@@ -331,7 +331,6 @@  xtensa_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* supports_range_stepping */
   xtensa_supports_hardware_single_step,
 };