[23/31] gdbserver/linux-low: turn 'supports_tracepoints' into a method

diff --git a/gdbserver/linux-aarch64-low.cc b/gdbserver/linux-aarch64-low.cc
index e6b6c871846..833652c214b 100644
--- a/gdbserver/linux-aarch64-low.cc
+++ b/gdbserver/linux-aarch64-low.cc
@@ -66,6 +66,8 @@  public:
 
   bool supports_z_point_type (char z_type) override;
 
+  bool supports_tracepoints () override;
+
 protected:
 
   void low_arch_setup () override;
@@ -716,13 +718,13 @@  aarch64_target::get_regs_info ()
   return &regs_info_aarch64;
 }
 
-/* Implementation of linux_target_ops method "supports_tracepoints".  */
+/* Implementation of target ops method "supports_tracepoints".  */
 
-static int
-aarch64_supports_tracepoints (void)
+bool
+aarch64_target::supports_tracepoints ()
 {
   if (current_thread == NULL)
-    return 1;
+    return true;
   else
     {
       /* We don't support tracepoints on aarch32 now.  */
@@ -3148,7 +3150,6 @@  aarch64_supports_hardware_single_step (void)
 
 struct linux_target_ops the_low_target =
 {
-  aarch64_supports_tracepoints,
   aarch64_get_thread_area,
   aarch64_install_fast_tracepoint_jump_pad,
   aarch64_emit_ops,
diff --git a/gdbserver/linux-arm-low.cc b/gdbserver/linux-arm-low.cc
index d2a7bf2eb9f..ae415cd9db7 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-bfin-low.cc b/gdbserver/linux-bfin-low.cc
index 9483c31d5f4..494adefe79b 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-crisv32-low.cc b/gdbserver/linux-crisv32-low.cc
index 3512178dd44..8c75bd86387 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 99bcb25c6d0..cc4230cd6e1 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -6441,15 +6441,6 @@  linux_process_target::get_ipa_tdesc_idx ()
   return (*the_low_target.get_ipa_tdesc_idx) ();
 }
 
-bool
-linux_process_target::supports_tracepoints ()
-{
-  if (*the_low_target.supports_tracepoints == NULL)
-    return false;
-
-  return (*the_low_target.supports_tracepoints) ();
-}
-
 CORE_ADDR
 linux_process_target::read_pc (regcache *regcache)
 {
diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h
index 0b0a1573593..5c2de8afe93 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 tracepoints.  */
-  int (*supports_tracepoints) (void);
-
   /* Fill ADDRP with the thread area address of LWPID.  Returns 0 on
      success, -1 on failure.  */
   int (*get_thread_area) (int lwpid, CORE_ADDR *addrp);
@@ -298,8 +295,6 @@  class linux_process_target : public process_stratum_target
 		    unsigned char *myaddr, unsigned int len) override;
 #endif
 
-  bool supports_tracepoints () override;
-
   CORE_ADDR read_pc (regcache *regcache) override;
 
   void write_pc (regcache *regcache, CORE_ADDR pc) override;
diff --git a/gdbserver/linux-m32r-low.cc b/gdbserver/linux-m32r-low.cc
index 25d971c1b90..01f32bc356c 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-m68k-low.cc b/gdbserver/linux-m68k-low.cc
index 12c7a4d06af..1c5e8f4487f 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-ppc-low.cc b/gdbserver/linux-ppc-low.cc
index ba5eac3f9fb..691d0e67bda 100644
--- a/gdbserver/linux-ppc-low.cc
+++ b/gdbserver/linux-ppc-low.cc
@@ -64,6 +64,9 @@  public:
 
   void low_supply_ptrace_register (regcache *regcache, int regno,
 				   const char *buf) override;
+
+  bool supports_tracepoints () override;
+
 protected:
 
   void low_arch_setup () override;
@@ -1026,12 +1029,12 @@  ppc_target::low_arch_setup ()
       }
 }
 
-/* Implementation of linux_target_ops method "supports_tracepoints".  */
+/* Implementation of target ops method "supports_tracepoints".  */
 
-static int
-ppc_supports_tracepoints (void)
+bool
+ppc_target::supports_tracepoints ()
 {
-  return 1;
+  return true;
 }
 
 /* Get the thread area address.  This is used to recognize which
@@ -3430,7 +3433,6 @@  ppc_get_ipa_tdesc_idx (void)
 }
 
 struct linux_target_ops the_low_target = {
-  ppc_supports_tracepoints,
   ppc_get_thread_area,
   ppc_install_fast_tracepoint_jump_pad,
   ppc_emit_ops,
diff --git a/gdbserver/linux-s390-low.cc b/gdbserver/linux-s390-low.cc
index 8e0c5aae3f9..29c28ea13d0 100644
--- a/gdbserver/linux-s390-low.cc
+++ b/gdbserver/linux-s390-low.cc
@@ -68,6 +68,8 @@  public:
 
   bool supports_z_point_type (char z_type) override;
 
+  bool supports_tracepoints () override;
+
   void low_collect_ptrace_register (regcache *regcache, int regno,
 				    char *buf) override;
 
@@ -764,12 +766,12 @@  s390_target::get_regs_info ()
   return &myregs_info;
 }
 
-/* The "supports_tracepoints" linux_target_ops method.  */
+/* The "supports_tracepoints" target ops method.  */
 
-static int
-s390_supports_tracepoints (void)
+bool
+s390_target::supports_tracepoints ()
 {
-  return 1;
+  return true;
 }
 
 /* Implementation of linux_target_ops method "get_thread_area".  */
@@ -2839,7 +2841,6 @@  s390_emit_ops (void)
 }
 
 struct linux_target_ops the_low_target = {
-  s390_supports_tracepoints,
   s390_get_thread_area,
   s390_install_fast_tracepoint_jump_pad,
   s390_emit_ops,
diff --git a/gdbserver/linux-sh-low.cc b/gdbserver/linux-sh-low.cc
index df25935fd44..9dfa8bb9dfd 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-tic6x-low.cc b/gdbserver/linux-tic6x-low.cc
index db6478a8025..cffef111f63 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-tile-low.cc b/gdbserver/linux-tile-low.cc
index 637da14d856..4938ececcb6 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */
diff --git a/gdbserver/linux-x86-low.cc b/gdbserver/linux-x86-low.cc
index 93e0a1425ae..8d88ecba449 100644
--- a/gdbserver/linux-x86-low.cc
+++ b/gdbserver/linux-x86-low.cc
@@ -110,6 +110,8 @@  public:
 
   void process_qsupported (char **features, int count) override;
 
+  bool supports_tracepoints () override;
+
 protected:
 
   void low_arch_setup () override;
@@ -1102,10 +1104,10 @@  x86_get_syscall_trapinfo (struct regcache *regcache, int *sysno)
     collect_register_by_name (regcache, "orig_eax", sysno);
 }
 
-static int
-x86_supports_tracepoints (void)
+bool
+x86_target::supports_tracepoints ()
 {
-  return 1;
+  return true;
 }
 
 static void
@@ -2960,7 +2962,6 @@  x86_get_ipa_tdesc_idx (void)
 
 struct linux_target_ops the_low_target =
 {
-  x86_supports_tracepoints,
   x86_get_thread_area,
   x86_install_fast_tracepoint_jump_pad,
   x86_emit_ops,
diff --git a/gdbserver/linux-xtensa-low.cc b/gdbserver/linux-xtensa-low.cc
index 3e7211815f6..f99106cad31 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_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
   NULL, /* emit_ops */