Merge branch 'sverker/NIF-64bit-integers/OTP-8746' into dev

* sverker/NIF-64bit-integers/OTP-8746:
  Make windows 64bit types be declared more consistently
  Teach Windows about the int64 functions
  NIF doc official support note
  NIF 64-bit integer support

5 files changed, 158 insertions, 2 deletions

diff --git a/erts/emulator/beam/big.c b/erts/emulator/beam/big.c
index 2d250f32cf..ff15d834ab 100644
--- a/erts/emulator/beam/big.c
+++ b/erts/emulator/beam/big.c
@@ -1881,6 +1881,9 @@ term_to_Uint(Eterm term, Uint *up)
 int
 term_to_UWord(Eterm term, UWord *up)
 {
+#if SIZEOF_VOID_P == ERTS_SIZEOF_ETERM
+    return term_to_Uint(term,up);
+#else
     if (is_small(term)) {
 	Sint i = signed_val(term);
 	if (i < 0) {
@@ -1903,7 +1906,47 @@ term_to_UWord(Eterm term, UWord *up)
 	    return 0;
 	}
 	while (xl-- > 0) {
-	    uval |= ((Uint)(*xr++)) << n;
+	    uval |= ((UWord)(*xr++)) << n;
+	    n += D_EXP;
+	}
+	*up = uval;
+	return 1;
+    } else {
+	*up = BADARG;
+	return 0;
+    }
+#endif
+}
+
+int
+term_to_Uint64(Eterm term, Uint64 *up)
+{
+#if SIZEOF_VOID_P == 8
+    return term_to_UWord(term,up);
+#else
+    if (is_small(term)) {
+	Sint i = signed_val(term);
+	if (i < 0) {
+	    *up = BADARG;
+	    return 0;
+	}
+	*up = (Uint64) i;
+	return 1;
+    } else if (is_big(term)) {
+	ErtsDigit* xr = big_v(term);
+	dsize_t  xl = big_size(term);
+	Uint64 uval = 0;
+	int n = 0;
+
+	if (big_sign(term)) {
+	    *up = BADARG;
+	    return 0;
+	} else if (xl*D_EXP > sizeof(Uint64)*8) {
+	    *up = SYSTEM_LIMIT;
+	    return 0;
+	}
+	while (xl-- > 0) {
+	    uval |= ((Uint64)(*xr++)) << n;
 	    n += D_EXP;
 	}
 	*up = uval;
@@ -1912,8 +1955,10 @@ term_to_UWord(Eterm term, UWord *up)
 	*up = BADARG;
 	return 0;
     }
+#endif
 }
 
+
 int term_to_Sint(Eterm term, Sint *sp)
 {
     if (is_small(term)) {
@@ -1948,6 +1993,47 @@ int term_to_Sint(Eterm term, Sint *sp)
     }
 }
 
+#if HAVE_INT64
+int term_to_Sint64(Eterm term, Sint64 *sp)
+{
+#if ERTS_SIZEOF_ETERM == 8
+    return term_to_Sint(term, sp);
+#else
+    if (is_small(term)) {
+	*sp = signed_val(term);
+	return 1;
+    } else if (is_big(term)) {
+	ErtsDigit* xr = big_v(term);
+	dsize_t xl = big_size(term);
+	int sign = big_sign(term);
+	Uint64 uval = 0;
+	int n = 0;
+
+	if (xl*D_EXP > sizeof(Uint64)*8) {
+	    return 0;
+	}
+	while (xl-- > 0) {
+	    uval |= ((Uint64)(*xr++)) << n;
+	    n += D_EXP;
+	}
+	if (sign) {
+	    uval = -uval;
+	    if ((Sint64)uval > 0)
+		return 0;
+	} else {
+	    if ((Sint64)uval < 0)
+		return 0;
+	}
+	*sp = uval;
+	return 1;
+    } else {
+	return 0;
+    }
+#endif
+}
+#endif /* HAVE_INT64 */
+
+
 /*
 ** Add and subtract
 */
diff --git a/erts/emulator/beam/big.h b/erts/emulator/beam/big.h
index 56f3be372a..25466cd3c2 100644
--- a/erts/emulator/beam/big.h
+++ b/erts/emulator/beam/big.h
@@ -152,6 +152,10 @@ byte* big_to_bytes(Eterm, byte*);
 int term_to_Uint(Eterm, Uint*);
 int term_to_UWord(Eterm, UWord*);
 int term_to_Sint(Eterm, Sint*);
+#if HAVE_INT64
+int term_to_Uint64(Eterm, Uint64*);
+int term_to_Sint64(Eterm, Sint64*);
+#endif
 
 Uint32 big_to_uint32(Eterm b);
 int term_equals_2pow32(Eterm);
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index eadaf137e3..1dd9c8bd4a 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -750,7 +750,19 @@ int enif_get_ulong(ErlNifEnv* env, Eterm term, unsigned long* ip)
 #endif     
 }
 
-int enif_get_double(ErlNifEnv* env, Eterm term, double* dp)
+#if HAVE_INT64 && SIZEOF_LONG != 8
+int enif_get_int64(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifSInt64* ip)
+{
+    return term_to_Sint64(term, ip);
+}
+
+int enif_get_uint64(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifUInt64* ip)
+{
+    return term_to_Uint64(term, ip);
+}
+#endif /* HAVE_INT64 && SIZEOF_LONG != 8 */
+
+int enif_get_double(ErlNifEnv* env, ERL_NIF_TERM term, double* dp)
 {
     FloatDef f;
     if (is_not_float(term)) {
@@ -817,6 +829,26 @@ ERL_NIF_TERM enif_make_ulong(ErlNifEnv* env, unsigned long i)
     return IS_USMALL(0,i) ? make_small(i) : uint_to_big(i,alloc_heap(env,2));
 }
 
+#if HAVE_INT64 && SIZEOF_LONG != 8
+ERL_NIF_TERM enif_make_int64(ErlNifEnv* env, ErlNifSInt64 i)
+{
+    Uint* hp;
+    Uint need = 0;
+    erts_bld_sint64(NULL, &need, i);
+    hp = alloc_heap(env, need);
+    return erts_bld_sint64(&hp, NULL, i);
+}
+
+ERL_NIF_TERM enif_make_uint64(ErlNifEnv* env, ErlNifUInt64 i)
+{
+    Uint* hp;
+    Uint need = 0;
+    erts_bld_uint64(NULL, &need, i);
+    hp = alloc_heap(env, need);
+    return erts_bld_uint64(&hp, NULL, i);
+}
+#endif /* HAVE_INT64 && SIZEOF_LONG != 8 */
+
 ERL_NIF_TERM enif_make_double(ErlNifEnv* env, double d)
 {
     Eterm* hp = alloc_heap(env,FLOAT_SIZE_OBJECT);
diff --git a/erts/emulator/beam/erl_nif.h b/erts/emulator/beam/erl_nif.h
index 936f03bce1..ee3a7cd5f4 100644
--- a/erts/emulator/beam/erl_nif.h
+++ b/erts/emulator/beam/erl_nif.h
@@ -66,6 +66,19 @@
 extern "C" {
 #endif
 
+#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
+typedef unsigned __int64 ErlNifUInt64;
+typedef __int64 ErlNifSInt64;
+#elif SIZEOF_LONG == 8
+typedef unsigned long ErlNifUInt64;
+typedef long ErlNifSInt64;
+#elif SIZEOF_LONG_LONG == 8
+typedef unsigned long long ErlNifUInt64;
+typedef long long ErlNifSInt64;
+#else
+#error No 64-bit integer type
+#endif
+
 #ifdef HALFWORD_HEAP_EMULATOR
 typedef unsigned int ERL_NIF_TERM;
 #else
diff --git a/erts/emulator/beam/erl_nif_api_funcs.h b/erts/emulator/beam/erl_nif_api_funcs.h
index ef4e9580b0..eca506593d 100644
--- a/erts/emulator/beam/erl_nif_api_funcs.h
+++ b/erts/emulator/beam/erl_nif_api_funcs.h
@@ -122,6 +122,12 @@ ERL_NIF_API_FUNC_DECL(ErlNifPid*,enif_self,(ErlNifEnv* caller_env, ErlNifPid* pi
 ERL_NIF_API_FUNC_DECL(int,enif_get_local_pid,(ErlNifEnv* env, ERL_NIF_TERM, ErlNifPid* pid));
 ERL_NIF_API_FUNC_DECL(void,enif_keep_resource,(void* obj));
 ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_resource_binary,(ErlNifEnv*,void* obj,const void* data, size_t size));
+#if SIZEOF_LONG != 8
+ERL_NIF_API_FUNC_DECL(int,enif_get_int64,(ErlNifEnv*, ERL_NIF_TERM term, ErlNifSInt64* ip));
+ERL_NIF_API_FUNC_DECL(int,enif_get_uint64,(ErlNifEnv*, ERL_NIF_TERM term, ErlNifUInt64* ip));
+ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_int64,(ErlNifEnv*, ErlNifSInt64));
+ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_uint64,(ErlNifEnv*, ErlNifUInt64));
+#endif
 
 /*
 ** Add last to keep compatibility on Windows!!!
@@ -230,6 +236,13 @@ ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_resource_binary,(ErlNifEnv*,void* o
 #  define enif_get_local_pid ERL_NIF_API_FUNC_MACRO(enif_get_local_pid)
 #  define enif_keep_resource ERL_NIF_API_FUNC_MACRO(enif_keep_resource)
 #  define enif_make_resource_binary ERL_NIF_API_FUNC_MACRO(enif_make_resource_binary)
+#if  SIZEOF_LONG != 8
+#  define enif_get_int64 ERL_NIF_API_FUNC_MACRO(enif_get_int64)
+#  define enif_get_uint64 ERL_NIF_API_FUNC_MACRO(enif_get_uint64)
+#  define enif_make_int64 ERL_NIF_API_FUNC_MACRO(enif_make_int64)
+#  define enif_make_uint64 ERL_NIF_API_FUNC_MACRO(enif_make_uint64)
+#endif
+
 #endif
 
 #ifndef enif_make_list1
@@ -253,5 +266,13 @@ ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_resource_binary,(ErlNifEnv*,void* o
 #  define enif_make_tuple9(ENV,E1,E2,E3,E4,E5,E6,E7,E8,E9) enif_make_tuple(ENV,9,E1,E2,E3,E4,E5,E6,E7,E8,E9)
 
 #  define enif_make_pid(ENV, PID) ((const ERL_NIF_TERM)((PID)->pid))
+
+#if SIZEOF_LONG == 8
+#  define enif_get_int64 enif_get_long
+#  define enif_get_uint64 enif_get_ulong
+#  define enif_make_int64 enif_make_long
+#  define enif_make_uint64 enif_make_ulong
+#endif
+
 #endif