diff --git a/gcc/config/mips/sni-gas.h b/gcc/config/mips/sni-gas.h
new file mode 100644
index 000000000000..752866536b84
--- /dev/null
+++ b/gcc/config/mips/sni-gas.h
@@ -0,0 +1,43 @@
+#include "mips/sni-svr4.h"
+
+/* Enable debugging. */
+#define DBX_DEBUGGING_INFO
+#define SDB_DEBUGGING_INFO
+#define MIPS_DEBUGGING_INFO
+
+#define DWARF_DEBUGGING_INFO
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
+
+/* We need to use .esize and .etype instead of .size and .type to
+ avoid conflicting with ELF directives. These are only recognized
+ by gas, anyhow, not the native assembler. */
+#undef PUT_SDB_SIZE
+#define PUT_SDB_SIZE(a) \
+do { \
+ extern FILE *asm_out_text_file; \
+ fprintf (asm_out_text_file, "\t.esize\t%d;", (a)); \
+} while (0)
+
+#undef PUT_SDB_TYPE
+#define PUT_SDB_TYPE(a) \
+do { \
+ extern FILE *asm_out_text_file; \
+ fprintf (asm_out_text_file, "\t.etype\t0x%x;", (a)); \
+} while (0)
+
+
+/* This is how to equate one symbol to another symbol. The syntax used is
+ `SYM1=SYM2'. Note that this is different from the way equates are done
+ with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */
+
+#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
+ do { fprintf ((FILE), "\t"); \
+ assemble_name (FILE, LABEL1); \
+ fprintf (FILE, " = "); \
+ assemble_name (FILE, LABEL2); \
+ fprintf (FILE, "\n"); \
+ } while (0)
+
+
+
diff --git a/gcc/config/mips/sni-svr4.h b/gcc/config/mips/sni-svr4.h
new file mode 100644
index 000000000000..67b18c02c370
--- /dev/null
+++ b/gcc/config/mips/sni-svr4.h
@@ -0,0 +1,103 @@
+/* Definitions of target machine for GNU compiler. SNI SINIX version.
+ Copyright (C) 1996 Free Software Foundation, Inc.
+ Contributed by Marco Walther (Marco.Walther@mch.sni.de).
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define MIPS_SVR4
+
+#define CPP_PREDEFINES "\
+-Dmips -Dunix -Dhost_mips -DMIPSEB -DR3000 -DSYSTYPE_SVR4 \
+-D_mips -D_unix -D_host_mips -D_MIPSEB -D_R3000 -D_SYSTYPE_SVR4 \
+-Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(mips)"
+
+#define CPP_SPEC "\
+%{.cc: -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS} \
+%{.cxx: -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS} \
+%{.C: -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS} \
+%{.m: -D__LANGUAGE_OBJECTIVE_C -D_LANGUAGE_OBJECTIVE_C} \
+%{.S: -D__LANGUAGE_ASSEMBLY -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
+%{.s: -D__LANGUAGE_ASSEMBLY -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
+%{!.S:%{!.s: -D__LANGUAGE_C -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}} \
+-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int"
+
+#define LINK_SPEC "\
+%{G*} \
+%{!mgas: \
+ %{dy} %{dn}}"
+
+#define LIB_SPEC "\
+ %{p:-lprof1} \
+ %{!p:%{pg:-lprof1} \
+ %{!pg:-L/usr/ccs/lib/ -lc /usr/ccs/lib/crtn.o%s}}"
+
+#define STARTFILE_SPEC "\
+ %{pg:gcrt0.o%s} \
+ %{!pg:%{p:mcrt0.o%s} \
+ %{!p:/usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o%s}}"
+
+/* Mips System V.4 doesn't have a getpagesize() function needed by the
+ trampoline code, so use the POSIX sysconf function to get it.
+ This is only done when compiling the trampoline code. */
+
+#ifdef L_trampoline
+#include <unistd.h>
+
+#define getpagesize() sysconf(_SC_PAGE_SIZE)
+#endif /* L_trampoline */
+
+/* Use atexit for static constructors/destructors, instead of defining
+ our own exit function. */
+#define HAVE_ATEXIT
+
+/* Generate calls to memcpy, etc., not bcopy, etc. */
+#define TARGET_MEM_FUNCTIONS
+
+#define OBJECT_FORMAT_ELF
+
+#define TARGET_DEFAULT MASK_ABICALLS
+#define ABICALLS_ASM_OP ".option pic2"
+
+#define MACHINE_TYPE "SNI running SINIX 5.42"
+
+#define MIPS_DEFAULT_GVALUE 0
+
+#define NM_FLAGS "-p"
+
+/* wir haben ein Problem, wenn in einem Assembler-File keine .text-section
+ erzeugt wird. Dann landen diese Pseudo-Labels in irgendeiner anderen
+ section, z.B. .reginfo. Das macht den ld sehr ungluecklich. */
+
+#define ASM_IDENTIFY_GCC(mw_stream) \
+ fprintf(mw_stream, "\t.ident \"gcc2_compiled.\"\n");
+
+#define ASM_IDENTIFY_LANGUAGE(STREAM)
+
+#define ASM_LONG ".word\t"
+#define ASM_GLOBAL ".rdata\n\t\t.globl\t"
+
+#include "mips/mips.h"
+
+/* We do not want to run mips-tfile! */
+#undef ASM_FINAL_SPEC
+
+#undef OBJECT_FORMAT_COFF
+
+/* We don't support debugging info for now. */
+#undef DBX_DEBUGGING_INFO
+#undef SDB_DEBUGGING_INFO
+#undef MIPS_DEBUGGING_INFO
diff --git a/gcc/config/mips/x-sni-svr4 b/gcc/config/mips/x-sni-svr4
new file mode 100644
index 000000000000..f986f88162f4
--- /dev/null
+++ b/gcc/config/mips/x-sni-svr4
@@ -0,0 +1,18 @@
+# Define CC and OLDCC as the same, so that the tests:
+# if [ x"$(OLDCC)" = x"$(CC)" ] ...
+#
+# will succeed (if OLDCC != CC, it is assumed that GCC is
+# being used in secondary stage builds).
+# -Olimit is so the user can use -O2. Down with fixed
+# size tables!
+
+CC = $(OLDCC)
+OPT =
+OLDCC = cc -Olimit 3000 $(OPT)
+
+X_CFLAGS = -DNO_SYS_SIGLIST
+
+# Show we need to use the C version of ALLOCA
+# The SVR3 configurations have it, but the SVR4 configurations don't.
+# For now, just try using it for all SVR* configurations.
+ALLOCA = alloca.o