linux low: Make the arch code free arch_process_info

For the same reason as the previous patch, we need to make the
arch-specific code free the arch_process_info structure it allocates.

gdb/gdbserver/ChangeLog:

	* linux-low.h (struct linux_target_ops) <delete_process>: New
	field.
	* linux-low.c (linux_mourn): Call the_low_target.delete_process.
	* linux-aarch64-low.c (aarch64_linux_delete_process): New.
	(struct linux_target_ops): Add delete_process callback.
	* linux-arm-low.c (arm_delete_process): New.
	(struct linux_target_ops): Add delete_process callback.
	* linux-bfin-low.c (struct linux_target_ops): Likewise.
	* linux-crisv32-low.c (struct linux_target_ops): Likewise.
	* linux-m32r-low.c (struct linux_target_ops): Likewise.
	* linux-mips-low.c (mips_linux_delete_process): New.
	(struct linux_target_ops): Add delete_process callback.
	* linux-ppc-low.c (struct linux_target_ops): Likewise.
	* linux-s390-low.c (struct linux_target_ops): Likewise.
	* linux-sh-low.c (struct linux_target_ops): Likewise.
	* linux-tic6x-low.c (struct linux_target_ops): Likewise.
	* linux-tile-low.c (struct linux_target_ops): Likewise.
	* linux-x86-low.c (x86_linux_delete_process): New.
	(struct linux_target_ops): Add delete_process callback.
	* linux-xtensa-low.c (struct linux_target_ops): Likewise.

16 files changed, 78 insertions, 2 deletions

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 1edb849..3902e91 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,28 @@
 2017-10-12  Simon Marchi  <simon.marchi@ericsson.com>
 
+	* linux-low.h (struct linux_target_ops) <delete_process>: New
+	field.
+	* linux-low.c (linux_mourn): Call the_low_target.delete_process.
+	* linux-aarch64-low.c (aarch64_linux_delete_process): New.
+	(struct linux_target_ops): Add delete_process callback.
+	* linux-arm-low.c (arm_delete_process): New.
+	(struct linux_target_ops): Add delete_process callback.
+	* linux-bfin-low.c (struct linux_target_ops): Likewise.
+	* linux-crisv32-low.c (struct linux_target_ops): Likewise.
+	* linux-m32r-low.c (struct linux_target_ops): Likewise.
+	* linux-mips-low.c (mips_linux_delete_process): New.
+	(struct linux_target_ops): Add delete_process callback.
+	* linux-ppc-low.c (struct linux_target_ops): Likewise.
+	* linux-s390-low.c (struct linux_target_ops): Likewise.
+	* linux-sh-low.c (struct linux_target_ops): Likewise.
+	* linux-tic6x-low.c (struct linux_target_ops): Likewise.
+	* linux-tile-low.c (struct linux_target_ops): Likewise.
+	* linux-x86-low.c (x86_linux_delete_process): New.
+	(struct linux_target_ops): Add delete_process callback.
+	* linux-xtensa-low.c (struct linux_target_ops): Likewise.
+
+2017-10-12  Simon Marchi  <simon.marchi@ericsson.com>
+
 	* linux-aarch64-low.c (the_low_target): Add thread delete
 	callback.
 	* linux-arm-low.c (arm_delete_thread): New function.
diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index ed6a993..6d5c4e5 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -429,7 +429,7 @@ aarch64_linux_siginfo_fixup (siginfo_t *native, gdb_byte *inf, int direction)
   return 0;
 }
 
-/* Implementation of linux_target_ops method "linux_new_process".  */
+/* Implementation of linux_target_ops method "new_process".  */
 
 static struct arch_process_info *
 aarch64_linux_new_process (void)
@@ -441,6 +441,14 @@ aarch64_linux_new_process (void)
   return info;
 }
 
+/* Implementation of linux_target_ops method "delete_process".  */
+
+static void
+aarch64_linux_delete_process (struct arch_process_info *info)
+{
+  xfree (info);
+}
+
 /* Implementation of linux_target_ops method "linux_new_fork".  */
 
 static void
@@ -2990,6 +2998,7 @@ struct linux_target_ops the_low_target =
   NULL, /* supply_ptrace_register */
   aarch64_linux_siginfo_fixup,
   aarch64_linux_new_process,
+  aarch64_linux_delete_process,
   aarch64_linux_new_thread,
   aarch64_linux_delete_thread,
   aarch64_linux_new_fork,
diff --git a/gdb/gdbserver/linux-arm-low.c b/gdb/gdbserver/linux-arm-low.c
index b27c47e..e12e3d2 100644
--- a/gdb/gdbserver/linux-arm-low.c
+++ b/gdb/gdbserver/linux-arm-low.c
@@ -640,6 +640,14 @@ arm_new_process (void)
   return info;
 }
 
+/* Called when a process is being deleted.  */
+
+static void
+arm_delete_process (struct arch_process_info *info)
+{
+  xfree (info);
+}
+
 /* Called when a new thread is detected.  */
 static void
 arm_new_thread (struct lwp_info *lwp)
@@ -1060,6 +1068,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   arm_new_process,
+  arm_delete_process,
   arm_new_thread,
   arm_delete_thread,
   arm_new_fork,
diff --git a/gdb/gdbserver/linux-bfin-low.c b/gdb/gdbserver/linux-bfin-low.c
index 175152c..7241946 100644
--- a/gdb/gdbserver/linux-bfin-low.c
+++ b/gdb/gdbserver/linux-bfin-low.c
@@ -135,6 +135,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-crisv32-low.c b/gdb/gdbserver/linux-crisv32-low.c
index 7911104..d6081d4 100644
--- a/gdb/gdbserver/linux-crisv32-low.c
+++ b/gdb/gdbserver/linux-crisv32-low.c
@@ -415,6 +415,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index a762b8f..f32c629 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -1687,7 +1687,10 @@ linux_mourn (struct process_info *process)
 
   /* Freeing all private data.  */
   priv = process->priv;
-  free (priv->arch_private);
+  if (the_low_target.delete_process != NULL)
+    the_low_target.delete_process (priv->arch_private);
+  else
+    gdb_assert (priv->arch_private == NULL);
   free (priv);
   process->priv = NULL;
 
diff --git a/gdb/gdbserver/linux-low.h b/gdb/gdbserver/linux-low.h
index 9c69dec..eda452f 100644
--- a/gdb/gdbserver/linux-low.h
+++ b/gdb/gdbserver/linux-low.h
@@ -189,6 +189,10 @@ struct linux_target_ops
      allocate it here.  */
   struct arch_process_info * (*new_process) (void);
 
+  /* Hook to call when a process is being deleted.  If extra per-process
+     architecture-specific data is needed, delete it here.  */
+  void (*delete_process) (struct arch_process_info *info);
+
   /* Hook to call when a new thread is detected.
      If extra per-thread architecture-specific data is needed,
      allocate it here.  */
diff --git a/gdb/gdbserver/linux-m32r-low.c b/gdb/gdbserver/linux-m32r-low.c
index b947fa0..af42ab4 100644
--- a/gdb/gdbserver/linux-m32r-low.c
+++ b/gdb/gdbserver/linux-m32r-low.c
@@ -134,6 +134,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-mips-low.c b/gdb/gdbserver/linux-mips-low.c
index ec26c2a..b30fbba 100644
--- a/gdb/gdbserver/linux-mips-low.c
+++ b/gdb/gdbserver/linux-mips-low.c
@@ -327,6 +327,15 @@ mips_linux_new_process (void)
   return info;
 }
 
+/* This is the implementation of linux_target_ops method
+   delete_process.  */
+
+static void
+mips_linux_delete_process (struct arch_process_info *info)
+{
+  xfree (info);
+}
+
 /* This is the implementation of linux_target_ops method new_thread.
    Mark the watch registers as changed, so the threads' copies will
    be updated.  */
@@ -900,6 +909,7 @@ struct linux_target_ops the_low_target = {
   NULL,
   NULL, /* siginfo_fixup */
   mips_linux_new_process,
+  mips_linux_delete_process,
   mips_linux_new_thread,
   mips_linux_delete_thread,
   mips_linux_new_fork,
diff --git a/gdb/gdbserver/linux-ppc-low.c b/gdb/gdbserver/linux-ppc-low.c
index f31a47b..a2c6cc4 100644
--- a/gdb/gdbserver/linux-ppc-low.c
+++ b/gdb/gdbserver/linux-ppc-low.c
@@ -3124,6 +3124,7 @@ struct linux_target_ops the_low_target = {
   ppc_supply_ptrace_register,
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-s390-low.c b/gdb/gdbserver/linux-s390-low.c
index 1a4c340..0cf75ac 100644
--- a/gdb/gdbserver/linux-s390-low.c
+++ b/gdb/gdbserver/linux-s390-low.c
@@ -2829,6 +2829,7 @@ struct linux_target_ops the_low_target = {
   s390_supply_ptrace_register,
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-sh-low.c b/gdb/gdbserver/linux-sh-low.c
index 273062f..3c612b3 100644
--- a/gdb/gdbserver/linux-sh-low.c
+++ b/gdb/gdbserver/linux-sh-low.c
@@ -164,6 +164,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-tic6x-low.c b/gdb/gdbserver/linux-tic6x-low.c
index 8b2a6f3..7a32f7e 100644
--- a/gdb/gdbserver/linux-tic6x-low.c
+++ b/gdb/gdbserver/linux-tic6x-low.c
@@ -397,6 +397,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-tile-low.c b/gdb/gdbserver/linux-tile-low.c
index c5b344b..0069748 100644
--- a/gdb/gdbserver/linux-tile-low.c
+++ b/gdb/gdbserver/linux-tile-low.c
@@ -196,6 +196,7 @@ struct linux_target_ops the_low_target =
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */
diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c
index 9597502..153858c 100644
--- a/gdb/gdbserver/linux-x86-low.c
+++ b/gdb/gdbserver/linux-x86-low.c
@@ -617,6 +617,14 @@ x86_linux_new_process (void)
   return info;
 }
 
+/* Called when a process is being deleted.  */
+
+static void
+x86_linux_delete_process (struct arch_process_info *info)
+{
+  xfree (info);
+}
+
 /* Target routine for linux_new_fork.  */
 
 static void
@@ -2866,6 +2874,7 @@ struct linux_target_ops the_low_target =
   /* need to fix up i386 siginfo if host is amd64 */
   x86_siginfo_fixup,
   x86_linux_new_process,
+  x86_linux_delete_process,
   x86_linux_new_thread,
   x86_linux_delete_thread,
   x86_linux_new_fork,
diff --git a/gdb/gdbserver/linux-xtensa-low.c b/gdb/gdbserver/linux-xtensa-low.c
index 5f2566c..beda116 100644
--- a/gdb/gdbserver/linux-xtensa-low.c
+++ b/gdb/gdbserver/linux-xtensa-low.c
@@ -288,6 +288,7 @@ struct linux_target_ops the_low_target = {
   NULL, /* supply_ptrace_register */
   NULL, /* siginfo_fixup */
   NULL, /* new_process */
+  NULL, /* delete_process */
   NULL, /* new_thread */
   NULL, /* delete_thread */
   NULL, /* new_fork */