Share some binary syntax code between JIT back-ends

Break out code for binary construction and matching that do not
depend on the architecture (x86_64 or AArch64).

Author: bjorng

erts/emulator/Makefile.in

@@ -1056,6 +1056,7 @@ JIT_OBJS = \
     $(OBJDIR)/asm_load.o \
     $(OBJDIR)/beam_asm_global.o \
     $(OBJDIR)/beam_asm_module.o \
+    $(OBJDIR)/beam_jit_bs.o \
     $(OBJDIR)/beam_jit_common.o \
     $(OBJDIR)/beam_jit_main.o \
     $(OBJDIR)/beam_jit_metadata.o \

erts/emulator/beam/beam_file.c

@@ -1490,6 +1490,7 @@ Eterm beamfile_get_literal(const BeamFile *beam, Sint index) {
 
     /* Static literal indexes are checked when parsing operations, and dynamic
      * literals are managed by us, so we can only land here through a bug. */
+    erts_printf("%ld\n", index);
     ERTS_INTERNAL_ERROR("illegal literal index");
 }