gdbserver/linux-low: turn 'process_qsupported' into a method

gdbserver/ChangeLog:
2020-04-02  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Remove the 'process_qsupported' linux target op and let a concrete
	linux target define the op by overriding the op declaration in
	process_stratum_target.

	* linux-low.h (struct linux_target_ops): Remove the op.
	(class linux_process_target) <process_qsupported>: Remove.
	* linux-low.cc (linux_process_target::process_qsupported): Remove.
	* linux-x86-low.cc (class x86_target) <process_qsupported>: Declare.
	(x86_linux_process_qsupported): Turn into...
	(x86_target::process_qsupported): ...this.
	(the_low_target): Remove the op field.
	* linux-aarch64-low.cc (the_low_target): Remove the op
	field.
	* linux-arm-low.cc (the_low_target): Ditto.
	* linux-bfin-low.cc (the_low_target): Ditto.
	* linux-crisv32-low.cc (the_low_target): Ditto.
	* linux-m32r-low.cc (the_low_target): Ditto.
	* linux-m68k-low.cc (the_low_target): Ditto.
	* linux-ppc-low.cc (the_low_target): Ditto.
	* linux-s390-low.cc (the_low_target): Ditto.
	* linux-sh-low.cc (the_low_target): Ditto.
	* linux-tic6x-low.cc (the_low_target): Ditto.
	* linux-tile-low.cc (the_low_target): Ditto.
	* linux-xtensa-low.cc (the_low_target): Ditto.

16 files changed, 38 insertions, 32 deletions

diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog
index 8c5ca79..e42b3d8 100644
--- a/gdbserver/ChangeLog
+++ b/gdbserver/ChangeLog
@@ -1,5 +1,32 @@
 2020-04-02  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
 
+	Remove the 'process_qsupported' linux target op and let a concrete
+	linux target define the op by overriding the op declaration in
+	process_stratum_target.
+
+	* linux-low.h (struct linux_target_ops): Remove the op.
+	(class linux_process_target) <process_qsupported>: Remove.
+	* linux-low.cc (linux_process_target::process_qsupported): Remove.
+	* linux-x86-low.cc (class x86_target) <process_qsupported>: Declare.
+	(x86_linux_process_qsupported): Turn into...
+	(x86_target::process_qsupported): ...this.
+	(the_low_target): Remove the op field.
+	* linux-aarch64-low.cc (the_low_target): Remove the op
+	field.
+	* linux-arm-low.cc (the_low_target): Ditto.
+	* linux-bfin-low.cc (the_low_target): Ditto.
+	* linux-crisv32-low.cc (the_low_target): Ditto.
+	* linux-m32r-low.cc (the_low_target): Ditto.
+	* linux-m68k-low.cc (the_low_target): Ditto.
+	* linux-ppc-low.cc (the_low_target): Ditto.
+	* linux-s390-low.cc (the_low_target): Ditto.
+	* linux-sh-low.cc (the_low_target): Ditto.
+	* linux-tic6x-low.cc (the_low_target): Ditto.
+	* linux-tile-low.cc (the_low_target): Ditto.
+	* linux-xtensa-low.cc (the_low_target): Ditto.
+
+2020-04-02  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
+
 	Turn the 'prepare_to_resume' linux target op into a method of
 	linux_process_target.
 
diff --git a/gdbserver/linux-aarch64-low.cc b/gdbserver/linux-aarch64-low.cc
index a99b979..56bf027 100644
--- a/gdbserver/linux-aarch64-low.cc
+++ b/gdbserver/linux-aarch64-low.cc
@@ -3147,7 +3147,6 @@ aarch64_supports_hardware_single_step (void)
 
 struct linux_target_ops the_low_target =
 {
-  NULL, /* process_qsupported */
   aarch64_supports_tracepoints,
   aarch64_get_thread_area,
   aarch64_install_fast_tracepoint_jump_pad,
diff --git a/gdbserver/linux-arm-low.cc b/gdbserver/linux-arm-low.cc
index f6429f0..9e74b03 100644
--- a/gdbserver/linux-arm-low.cc
+++ b/gdbserver/linux-arm-low.cc
@@ -1117,7 +1117,6 @@ arm_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-bfin-low.cc b/gdbserver/linux-bfin-low.cc
index 3e3f39a..aa8a16e 100644
--- a/gdbserver/linux-bfin-low.cc
+++ b/gdbserver/linux-bfin-low.cc
@@ -171,7 +171,6 @@ bfin_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-crisv32-low.cc b/gdbserver/linux-crisv32-low.cc
index d262fae..f0851ca 100644
--- a/gdbserver/linux-crisv32-low.cc
+++ b/gdbserver/linux-crisv32-low.cc
@@ -468,7 +468,6 @@ crisv32_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 3105db6..e94118b 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -6425,13 +6425,6 @@ linux_process_target::read_loadmap (const char *annex, CORE_ADDR offset,
 }
 #endif /* defined PT_GETDSBT || defined PTRACE_GETFDPIC */
 
-void
-linux_process_target::process_qsupported (char **features, int count)
-{
-  if (the_low_target.process_qsupported != NULL)
-    the_low_target.process_qsupported (features, count);
-}
-
 bool
 linux_process_target::supports_catch_syscall ()
 {
diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h
index 49fbc5e..bc45e3f 100644
--- a/gdbserver/linux-low.h
+++ b/gdbserver/linux-low.h
@@ -131,9 +131,6 @@ struct lwp_info;
 
 struct linux_target_ops
 {
-  /* Hook to support target specific qSupported.  */
-  void (*process_qsupported) (char **, int count);
-
   /* Returns true if the low target supports tracepoints.  */
   int (*supports_tracepoints) (void);
 
@@ -299,8 +296,6 @@ public:
 		    unsigned char *myaddr, unsigned int len) override;
 #endif
 
-  void process_qsupported (char **features, int count) override;
-
   bool supports_tracepoints () override;
 
   CORE_ADDR read_pc (regcache *regcache) override;
diff --git a/gdbserver/linux-m32r-low.cc b/gdbserver/linux-m32r-low.cc
index bae0f25..3ba2b0e 100644
--- a/gdbserver/linux-m32r-low.cc
+++ b/gdbserver/linux-m32r-low.cc
@@ -161,7 +161,6 @@ m32r_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-m68k-low.cc b/gdbserver/linux-m68k-low.cc
index cfb0a0a..4f9b68b 100644
--- a/gdbserver/linux-m68k-low.cc
+++ b/gdbserver/linux-m68k-low.cc
@@ -265,7 +265,6 @@ m68k_supports_hardware_single_step (void)
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-ppc-low.cc b/gdbserver/linux-ppc-low.cc
index 22fda33..0c3d5eb 100644
--- a/gdbserver/linux-ppc-low.cc
+++ b/gdbserver/linux-ppc-low.cc
@@ -3428,7 +3428,6 @@ ppc_get_ipa_tdesc_idx (void)
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   ppc_supports_tracepoints,
   ppc_get_thread_area,
   ppc_install_fast_tracepoint_jump_pad,
diff --git a/gdbserver/linux-s390-low.cc b/gdbserver/linux-s390-low.cc
index e46375f..d3be399 100644
--- a/gdbserver/linux-s390-low.cc
+++ b/gdbserver/linux-s390-low.cc
@@ -2845,7 +2845,6 @@ s390_emit_ops (void)
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   s390_supports_tracepoints,
   s390_get_thread_area,
   s390_install_fast_tracepoint_jump_pad,
diff --git a/gdbserver/linux-sh-low.cc b/gdbserver/linux-sh-low.cc
index d2d0f0b..ac6b1d7 100644
--- a/gdbserver/linux-sh-low.cc
+++ b/gdbserver/linux-sh-low.cc
@@ -192,7 +192,6 @@ sh_target::low_arch_setup ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-tic6x-low.cc b/gdbserver/linux-tic6x-low.cc
index ddb84e7..bf7099b 100644
--- a/gdbserver/linux-tic6x-low.cc
+++ b/gdbserver/linux-tic6x-low.cc
@@ -423,7 +423,6 @@ tic6x_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-tile-low.cc b/gdbserver/linux-tile-low.cc
index 5268f40..355657b 100644
--- a/gdbserver/linux-tile-low.cc
+++ b/gdbserver/linux-tile-low.cc
@@ -224,7 +224,6 @@ tile_supports_hardware_single_step (void)
 
 struct linux_target_ops the_low_target =
 {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */
diff --git a/gdbserver/linux-x86-low.cc b/gdbserver/linux-x86-low.cc
index f9459dc..bf5245e 100644
--- a/gdbserver/linux-x86-low.cc
+++ b/gdbserver/linux-x86-low.cc
@@ -100,16 +100,14 @@ class x86_target : public linux_process_target
 {
 public:
 
-  /* Update all the target description of all processes; a new GDB
-     connected, and it may or not support xml target descriptions.  */
-  void update_xmltarget ();
-
   const regs_info *get_regs_info () override;
 
   const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
 
   bool supports_z_point_type (char z_type) override;
 
+  void process_qsupported (char **features, int count) override;
+
 protected:
 
   void low_arch_setup () override;
@@ -157,6 +155,12 @@ protected:
   void low_new_fork (process_info *parent, process_info *child) override;
 
   void low_prepare_to_resume (lwp_info *lwp) override;
+
+private:
+
+  /* Update all the target description of all processes; a new GDB
+     connected, and it may or not support xml target descriptions.  */
+  void update_xmltarget ();
 };
 
 /* The singleton target ops object.  */
@@ -1001,8 +1005,8 @@ x86_target::update_xmltarget ()
 /* Process qSupported query, "xmlRegisters=".  Update the buffer size for
    PTRACE_GETREGSET.  */
 
-static void
-x86_linux_process_qsupported (char **features, int count)
+void
+x86_target::process_qsupported (char **features, int count)
 {
   int i;
 
@@ -1033,7 +1037,7 @@ x86_linux_process_qsupported (char **features, int count)
 	  free (copy);
 	}
     }
-  the_x86_target.update_xmltarget ();
+  update_xmltarget ();
 }
 
 /* Common for x86/x86-64.  */
@@ -2963,7 +2967,6 @@ x86_get_ipa_tdesc_idx (void)
 
 struct linux_target_ops the_low_target =
 {
-  x86_linux_process_qsupported,
   x86_supports_tracepoints,
   x86_get_thread_area,
   x86_install_fast_tracepoint_jump_pad,
diff --git a/gdbserver/linux-xtensa-low.cc b/gdbserver/linux-xtensa-low.cc
index a58a74b..b6d0889 100644
--- a/gdbserver/linux-xtensa-low.cc
+++ b/gdbserver/linux-xtensa-low.cc
@@ -329,7 +329,6 @@ xtensa_target::get_regs_info ()
 }
 
 struct linux_target_ops the_low_target = {
-  NULL, /* process_qsupported */
   NULL, /* supports_tracepoints */
   NULL, /* get_thread_area */
   NULL, /* install_fast_tracepoint_jump_pad */