# possible it should be in TARGET_READ_PC instead).
m;CORE_ADDR;addr_bits_remove;CORE_ADDR addr;addr;;core_addr_identity;;0
+# On some machines, not all bits of an address word are significant.
+# For example, on AArch64, the top bits of an address known as the "tag"
+# are ignored by the kernel, the hardware, etc. and can be regarded as
+# additional data associated with the address.
+v;int;significant_addr_bit;;;;;gdbarch_addr_bit (gdbarch);
+
# FIXME/cagney/2001-01-18: This should be split in two. A target method that
# indicates if the target needs software single step. An ISA method to
# implement it.
# If you do not provide this function, GDB assumes that the
# architecture does not support displaced stepping.
#
-# If your architecture doesn't need to adjust instructions before
-# single-stepping them, consider using simple_displaced_step_copy_insn
-# here.
-#
# If the instruction cannot execute out of line, return NULL. The
# core falls back to stepping past the instruction in-line instead in
# that case.