entered into RCS

From-SVN: r1422

diff --git a/gcc/config/i386/isc.h b/gcc/config/i386/isc.h
new file mode 100644 (file)
index 0000000..f88c693
--- /dev/null
+++ b/gcc/config/i386/isc.h
@@ -0,0 +1,46 @@
+/* Assembler-independent definitions for an Intel 386 running
+   Interactive Unix System V. Specifically, this is for recent versions
+   that support POSIX.  */
+
+/* Use crt1.o, not crt0.o, as a startup file, and crtn.o as a closing file. */
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
+  "%{!shlib:%{posix:%{pg:mcrtp1.o%s}%{!pg:%{p:mcrtp1.o%s}%{!p:crtp1.o%s}}}\
+   %{!posix:%{pg:mcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}\
+   %{p:-L/lib/libp} %{pg:-L/lib/libp}}}\
+   %{shlib:%{posix:crtp1.o%s}%{!posix:crt1.o%s}} crtbegin.o%s"
+  
+#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
+
+/* Library spec */
+#undef LIB_SPEC
+#define LIB_SPEC "%{posix:-lcposix} %{shlib:-lc_s} -lc -lg"
+
+/* ISC 2.2 uses `char' for `wchar_t'.  */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "char"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_UNIT
+
+#if 0
+/* This is apparently not true: ISC versions up to 3.0, at least, use
+   the standard calling sequence in which the called function pops the
+   extra arg.  */
+/* caller has to pop the extra argument passed to functions that return
+   structures. */
+
+#undef RETURN_POPS_ARGS
+#define RETURN_POPS_ARGS(FUNTYPE,SIZE)   \
+  (TREE_CODE (FUNTYPE) == IDENTIFIER_NODE ? 0                  \
+   : (TARGET_RTD                                               \
+      && (TYPE_ARG_TYPES (FUNTYPE) == 0                                \
+         || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
+             == void_type_node))) ? (SIZE)                     \
+   : 0)
+/* On other 386 systems, the last line looks like this:
+   : (aggregate_value_p (FUNTYPE)) ? GET_MODE_SIZE (Pmode) : 0)  */
+#endif
+
+/* Handle #pragma pack and #pragma weak.  */
+#define HANDLE_SYSV_PRAGMA