* arch-utils.c (gdbarch_info_fill): Also try core_bfd.

	* corelow.c (core_read_description): New.
	(init_core_ops): Set to_read_description.
	* gdbarch.sh: Add gdbarch_core_read_description.
	* mips-linux-tdep.c (mips_linux_core_read_description): New.
	(mips_linux_init_abi): Call set_gdbarch_core_read_description.
	* mips-tdep.c (mips_tdesc_gp32, mips_tdesc_gp64): New.
	(mips_register_g_packet_guesses): Use them.
	(_initialize_mips_tdep): Initialize them.
	* mips-tdep.h (mips_tdesc_gp32, mips_tdesc_gp64): Declare.
	* gdbarch.h, gdbarch.c: Regenerated.

1 files changed, 25 insertions, 0 deletions

diff --git a/gdb/mips-linux-tdep.c b/gdb/mips-linux-tdep.c
index 96d1492a746..9efe3fbb24a 100644
--- a/gdb/mips-linux-tdep.c
+++ b/gdb/mips-linux-tdep.c
@@ -573,6 +573,28 @@ static struct core_fns regset_core_fns =
   NULL					/* next */
 };
 
+static const struct target_desc *
+mips_linux_core_read_description (struct gdbarch *gdbarch,
+				  struct target_ops *target,
+				  bfd *abfd)
+{
+  asection *section = bfd_get_section_by_name (abfd, ".reg");
+  if (! section)
+    return NULL;
+
+  switch (bfd_section_size (abfd, section))
+    {
+    case sizeof (mips_elf_gregset_t):
+      return mips_tdesc_gp32;
+
+    case sizeof (mips64_elf_gregset_t):
+      return mips_tdesc_gp64;
+
+    default:
+      return NULL;
+    }
+}
+
 
 /* Check the code at PC for a dynamic linker lazy resolution stub.
    Because they aren't in the .plt section, we pattern-match on the
@@ -1160,6 +1182,9 @@ mips_linux_init_abi (struct gdbarch_info info,
 
   set_gdbarch_write_pc (gdbarch, mips_linux_write_pc);
 
+  set_gdbarch_core_read_description (gdbarch,
+				     mips_linux_core_read_description);
+
   if (tdesc_data)
     {
       const struct tdesc_feature *feature;