New s390x port built on the hercules emulator and fedora 16 image.

* include/lightning/jit_s390x.h, lib/jit_s390x-cpu.c,
	lib/jit_s390x-fpu.c, lib/jit_s390x.c: New files
	implementing the new s390x port.

	* configure.ac, include/lightning.h,
	include/lightning/Makefile.am,
	include/lightning/jit_private.h,
	lib/Makefile.am, lib/jit_disasm.c, lib/lightning.c:
	Minor adaptation for the new s390x backend.

	* check/float.tst: Update for the s390x result of
	truncating +Inf to integer.

	* check/qalu_mul.tst: Add extra test cases to better test
	high word of signed multiplication as the result is
	adjust from unsigned multiplication on s390x.

lib/Makefile.am

@@ -43,6 +43,9 @@ EXTRA_DIST =			\
 	jit_ppc.c		\
 	jit_ppc-cpu.c		\
 	jit_ppc-fpu.c		\
+	jit_s390x.c		\
+	jit_s390x-cpu.c		\
+	jit_s390x-fpu.c		\
 	jit_sparc.c		\
 	jit_sparc-cpu.c		\
 	jit_sparc-fpu.c		\

lib/jit_disasm.c

@@ -90,9 +90,14 @@ jit_init_debug(void)
 #    endif
     disassemble_init_powerpc(&disasm_info);
 #  endif
-
 #  if defined(__sparc__)
     disasm_info.endian = disasm_info.display_endian = BFD_ENDIAN_BIG;
+#  endif
+#  if defined(__s390x__)
+    disasm_info.arch = bfd_arch_s390;
+    disasm_info.mach = bfd_mach_s390_64;
+    disasm_info.endian = disasm_info.display_endian = BFD_ENDIAN_BIG;
+    disasm_info.disassembler_options = "zarch";
 #  endif
     disasm_info.print_address_func = disasm_print_address;
 

lib/lightning.c

@@ -2913,4 +2913,6 @@ _patch_register(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
 #  include "jit_hppa.c"
 #elif defined(__aarch64__)
 #  include "jit_aarch64.c"
+#elif defined(__s390x__)
+#  include "jit_s390x.c"
 #endif