libgo: add s390 support

From Dominik Vogt.

* libgo/go/syscall/libcall_linux_s390.go: New file for s390 support.
* libgo/go/syscall/syscall_linux_s390.go: Ditto.
* libgo/go/syscall/libcall_linux_s390x.go: New file for s390x support.
* libgo/go/syscall/syscall_linux_s390x.go: Ditto.
* libgo/go/runtime/pprof/pprof.go (printStackRecord): Support s390 and
s390x.
* libgo/runtime/runtime.c (runtime_cputicks): Add support for s390 and
s390x
* libgo/mksysinfo.sh: Ditto.
(upcase_fields): New helper function

* libgo/go/debug/elf/file.go (applyRelocations): Implement relocations
on s390x.
(applyRelocationsS390x): Ditto.
(DWARF): Ditto.
* libgo/go/debug/elf/elf.go (R_390): New constants for S390 relocations.
(r390Strings): Ditto.
(String): Helper function for S390 relocations.
(GoString): Ditto.

* libgo/go/reflect/makefuncgo_s390.go: New file.
(S390MakeFuncStubGo): Implementation of s390 abi.
* libgo/go/reflect/makefuncgo_s390x.go: New file.
(S390xMakeFuncStubGo): Implementation of s390x abi.
* libgo/go/reflect/makefunc_s390.c: New file.
(makeFuncStub): s390 and s390x specific implementation of function.
* libgo/go/reflect/makefunc.go
(MakeFunc): Add support for s390 and s390x.
(makeMethodValue): Ditto.
(makeValueMethod): Ditto.
* libgo/Makefile.am (go_reflect_makefunc_s_file): Ditto.
(go_reflect_makefunc_file): Ditto.
* libgo/go/reflect/makefunc_dummy.c: Ditto.
* libgo/runtime/runtime.h (__go_makefunc_can_recover): Export prototype
for use in makefunc_s390.c.
(__go_makefunc_returning): Ditto.

* libgo/go/syscall/exec_linux.go (forkAndExecInChild): Fix order of the
arguments of the clone system call for s390[x].

* libgo/configure.ac (is_s390): New variable.
(is_s390x): Ditto
(LIBGO_IS_S390): Ditto.
(LIBGO_IS_S390X): Ditto.
(GOARCH): Support s390 and s390x.
* libgo/go/go/build/build.go (cgoEnabled): Ditto.
* libgo/go/go/build/syslist.go (goarchList): Ditto.

From-SVN: r217106

1 files changed, 52 insertions, 2 deletions

diff --git a/libgo/configure b/libgo/configure
index 7984e86..68161f6 100755
--- a/libgo/configure
+++ b/libgo/configure
@@ -631,6 +631,10 @@ LIBGO_IS_SPARC64_FALSE
 LIBGO_IS_SPARC64_TRUE
 LIBGO_IS_SPARC_FALSE
 LIBGO_IS_SPARC_TRUE
+LIBGO_IS_S390X_FALSE
+LIBGO_IS_S390X_TRUE
+LIBGO_IS_S390_FALSE
+LIBGO_IS_S390_TRUE
 LIBGO_IS_PPC64_FALSE
 LIBGO_IS_PPC64_TRUE
 LIBGO_IS_PPC_FALSE
@@ -11118,7 +11122,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11121 "configure"
+#line 11125 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11224,7 +11228,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11227 "configure"
+#line 11231 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13620,6 +13624,8 @@ is_m68k=no
 mips_abi=unknown
 is_ppc=no
 is_ppc64=no
+is_s390=no
+is_s390x=no
 is_sparc=no
 is_sparc64=no
 is_x86_64=no
@@ -13739,6 +13745,26 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
       GOARCH=ppc64
     fi
     ;;
+  s390*-*-*)
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#if defined(__s390x__)
+#error 64-bit
+#endif
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  is_s390=yes
+else
+  is_s390x=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    if test "$is_s390" = "yes"; then
+      GOARCH=s390
+    else
+      GOARCH=s390x
+    fi
+    ;;
   sparc*-*-*)
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -13856,6 +13882,22 @@ else
   LIBGO_IS_PPC64_FALSE=
 fi
 
+ if test $is_s390 = yes; then
+  LIBGO_IS_S390_TRUE=
+  LIBGO_IS_S390_FALSE='#'
+else
+  LIBGO_IS_S390_TRUE='#'
+  LIBGO_IS_S390_FALSE=
+fi
+
+ if test $is_s390x = yes; then
+  LIBGO_IS_S390X_TRUE=
+  LIBGO_IS_S390X_FALSE='#'
+else
+  LIBGO_IS_S390X_TRUE='#'
+  LIBGO_IS_S390X_FALSE=
+fi
+
  if test $is_sparc = yes; then
   LIBGO_IS_SPARC_TRUE=
   LIBGO_IS_SPARC_FALSE='#'
@@ -15630,6 +15672,14 @@ if test -z "${LIBGO_IS_PPC64_TRUE}" && test -z "${LIBGO_IS_PPC64_FALSE}"; then
   as_fn_error "conditional \"LIBGO_IS_PPC64\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${LIBGO_IS_S390_TRUE}" && test -z "${LIBGO_IS_S390_FALSE}"; then
+  as_fn_error "conditional \"LIBGO_IS_S390\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${LIBGO_IS_S390X_TRUE}" && test -z "${LIBGO_IS_S390X_FALSE}"; then
+  as_fn_error "conditional \"LIBGO_IS_S390X\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${LIBGO_IS_SPARC_TRUE}" && test -z "${LIBGO_IS_SPARC_FALSE}"; then
   as_fn_error "conditional \"LIBGO_IS_SPARC\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5