[PATCH 17/22] [GDBserver] Multi-process + multi-arch: GNU/Linux Aarch64

[Pedro Alves <palves@redhat.com>]

This adjusts the GNU/Linux Aarch64 port to new interfaces.

Buit with a cross aarch64-linux-gnu toolchain.  Otherwise not tested.

2012-05-30  Pedro Alves  <palves@redhat.com>

        * linux-aarch64-low.c (tdesc_aarch64): Declare.
        (aarch64_arch_setup): Set the current process'es tdesc.
        (target_regsets): Rename to ...
        (aarch64_regsets): ... this.
        (aarch64_regsets_info, aarch64_usrregs_info, regs_info): New globals.
        (aarch64_regs_info): New function.
        (the_low_target): Adjust.
        (initialize_low_arch): New function.
---
 gdb/gdbserver/linux-aarch64-low.c |   43 +++++++++++++++++++++++++++++++++----
 1 file changed, 38 insertions(+), 5 deletions(-)

diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index cdf9cfd..e37f602 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -32,6 +32,7 @@
 
 /* Defined in auto-generated files.  */
 void init_registers_aarch64 (void);
+extern const struct target_desc *tdesc_aarch64;
 
 #ifdef HAVE_SYS_REG_H
 #include <sys/reg.h>
@@ -1188,7 +1189,7 @@ aarch64_arch_setup (void)
   struct iovec iov;
   struct user_hwdebug_state dreg_state;
 
-  init_registers_aarch64 ();
+  current_process ()->tdesc = tdesc_aarch64;
 
   pid = lwpid_of (get_thread_lwp (current_inferior));
   iov.iov_base = &dreg_state;
@@ -1235,7 +1236,7 @@ aarch64_arch_setup (void)
     }
 }
 
-struct regset_info target_regsets[] =
+static struct regset_info aarch64_regsets[] =
 {
   { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_PRSTATUS,
     sizeof (struct user_pt_regs), GENERAL_REGS,
@@ -1247,12 +1248,36 @@ struct regset_info target_regsets[] =
   { 0, 0, 0, -1, -1, NULL, NULL }
 };
 
+static struct regsets_info aarch64_regsets_info =
+  {
+    aarch64_regsets, /* regsets */
+    0, /* num_regsets */
+    NULL, /* disabled_regsets */
+  };
+
+static struct usrregs_info aarch64_usrregs_info =
+  {
+    AARCH64_NUM_REGS,
+    aarch64_regmap,
+  };
+
+static struct regs_info regs_info =
+  {
+    NULL, /* regset_bitmap */
+    &aarch64_usrregs_info,
+    &aarch64_regsets_info,
+  };
+
+static const struct regs_info *
+aarch64_regs_info (void)
+{
+  return &regs_info;
+}
+
 struct linux_target_ops the_low_target =
 {
   aarch64_arch_setup,
-  AARCH64_NUM_REGS,
-  aarch64_regmap,
-  NULL,
+  aarch64_regs_info,
   aarch64_cannot_fetch_register,
   aarch64_cannot_store_register,
   NULL,
@@ -1274,3 +1299,11 @@ struct linux_target_ops the_low_target =
   aarch64_linux_new_thread,
   aarch64_linux_prepare_to_resume,
 };
+
+void
+initialize_low_arch (void)
+{
+  init_registers_aarch64 ();
+
+  initialize_regsets_info (&aarch64_regsets_info);
+}