Use get_remote_packet_size in download_tracepoint

[deliverable/binutils-gdb.git] / gdb / aarch64-linux-tdep.c

diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 847454f1d14a89cd7e5733f212a03f60783bcd89..93b6d416a3e43300c1eaa2e1e807b60160e232c9 100644 (file)
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux AArch64.
 
-   Copyright (C) 2009-2017 Free Software Foundation, Inc.
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
    Contributed by ARM Ltd.
 
    This file is part of GDB.
@@ -233,7 +233,8 @@ aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
       NULL, cb_data);
 }
 
-/* Implement the "core_read_description" gdbarch method.  */
+/* Implement the "core_read_description" gdbarch method.  SVE not yet
+   supported.  */
 
 static const struct target_desc *
 aarch64_linux_core_read_description (struct gdbarch *gdbarch,
@@ -244,7 +245,7 @@ aarch64_linux_core_read_description (struct gdbarch *gdbarch,
   if (target_auxv_search (target, AT_HWCAP, &aarch64_hwcap) != 1)
     return NULL;
 
-  return tdesc_aarch64;
+  return aarch64_read_description (0);
 }
 
 /* Implementation of `gdbarch_stap_is_single_operand', as defined in
@@ -305,7 +306,7 @@ aarch64_stap_parse_special_token (struct gdbarch *gdbarch,
               regname, p->saved_arg);
 
       ++tmp;
-      tmp = skip_spaces_const (tmp);
+      tmp = skip_spaces (tmp);
       /* Now we expect a number.  It can begin with '#' or simply
         a digit.  */
       if (*tmp == '#')
@@ -365,9 +366,9 @@ aarch64_stap_parse_special_token (struct gdbarch *gdbarch,
 
 static LONGEST
 aarch64_linux_get_syscall_number (struct gdbarch *gdbarch,
-                                 ptid_t ptid)
+                                 thread_info *thread)
 {
-  struct regcache *regs = get_thread_regcache (ptid);
+  struct regcache *regs = get_thread_regcache (thread);
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
 
   /* The content of register x8.  */
@@ -376,7 +377,7 @@ aarch64_linux_get_syscall_number (struct gdbarch *gdbarch,
   LONGEST ret;
 
   /* Getting the system call number from the register x8.  */
-  regcache_cooked_read (regs, AARCH64_DWARF_X0 + 8, buf);
+  regs->cooked_read (AARCH64_DWARF_X0 + 8, buf);
 
   ret = extract_signed_integer (buf, X_REGISTER_SIZE, byte_order);
 
@@ -1001,6 +1002,15 @@ aarch64_linux_syscall_record (struct regcache *regcache,
   return 0;
 }
 
+/* Implement the "gcc_target_options" gdbarch method.  */
+
+static char *
+aarch64_linux_gcc_target_options (struct gdbarch *gdbarch)
+{
+  /* GCC doesn't know "-m64".  */
+  return NULL;
+}
+
 static void
 aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
@@ -1053,6 +1063,11 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* Syscall record.  */
   tdep->aarch64_syscall_record = aarch64_linux_syscall_record;
 
+  /* The top byte of a user space address known as the "tag",
+     is ignored by the kernel and can be regarded as additional
+     data associated with the address.  */
+  set_gdbarch_significant_addr_bit (gdbarch, 56);
+
   /* Initialize the aarch64_linux_record_tdep.  */
   /* These values are the size of the type that will be used in a system
      call.  They are obtained from Linux Kernel source.  */
@@ -1225,10 +1240,9 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_gdbarch_displaced_step_location (gdbarch, linux_displaced_step_location);
   set_gdbarch_displaced_step_hw_singlestep (gdbarch,
                                            aarch64_displaced_step_hw_singlestep);
-}
 
-/* Provide a prototype to silence -Wmissing-prototypes.  */
-extern initialize_file_ftype _initialize_aarch64_linux_tdep;
+  set_gdbarch_gcc_target_options (gdbarch, aarch64_linux_gcc_target_options);
+}
 
 void
 _initialize_aarch64_linux_tdep (void)