Use gcc 3.4.6 for m68k-amigaos-toolchain

This changes to using the 3.4 series gcc with patches from
github:cahirwpz/m68k-amigaos-toolchain and some other modifications to
make it compile.

clib2 is currently failing to build with this compiler with the
following errors:

Compiling unistd_getopt.c [large_data_020:c]
/tmp/ccrQcqYy.s: Assembler messages:
/tmp/ccrQcqYy.s:36: Error: parse error -- statement `cmpl (sp.0),d0' ignored
/tmp/ccrQcqYy.s:58: Error: parse error -- statement `movel (sp.0),a0' ignored
/tmp/ccrQcqYy.s:86: Error: parse error -- statement `addql #1,(sp.0)' ignored
/tmp/ccrQcqYy.s:89: Error: parse error -- statement `movel (sp.0),a0' ignored
/tmp/ccrQcqYy.s:94: Error: parse error -- statement `movel d0,(sp.0)' ignored
/tmp/ccrQcqYy.s:104: Error: parse error -- statement `addl (sp.0),a0' ignored
/tmp/ccrQcqYy.s:129: Error: parse error -- statement `movel d0,(sp.0)' ignored
/tmp/ccrQcqYy.s:139: Error: parse error -- statement `movel d0,(sp.0)' ignored
/tmp/ccrQcqYy.s:143: Error: parse error -- statement `addql #1,(sp.0)' ignored
/tmp/ccrQcqYy.s:146: Error: parse error -- statement `movel (sp.0),a0' ignored
/tmp/ccrQcqYy.s:150: Error: parse error -- statement `movel d0,(sp.0)' ignored
make[2]: *** [large_data_020/libc_objs/unistd_getopt.o] Error 1

1 files changed, 87 insertions, 0 deletions

diff --git a/m68k-unknown-amigaos/recipes/patches/gcc/gcc.c-decl.c.p b/m68k-unknown-amigaos/recipes/patches/gcc/gcc.c-decl.c.p
new file mode 100644
index 0000000..6e7e353
--- /dev/null
+++ b/m68k-unknown-amigaos/recipes/patches/gcc/gcc.c-decl.c.p
@@ -0,0 +1,87 @@
+--- gcc-3.4.6/gcc/c-decl.c	2013-05-19 20:09:27.000000000 +0200
++++ gcc/c-decl.c	2013-05-19 20:23:32.000000000 +0200
+@@ -2960,7 +2960,7 @@
+    and push that on the current scope.  */
+ 
+ void
+-push_parm_decl (tree parm)
++push_parm_decl (tree parm, tree asmspec)
+ {
+   tree decl;
+   int old_dont_save_pending_sizes_p = 0;
+@@ -2983,6 +2983,75 @@
+ 			 PARM, 0, NULL);
+   decl_attributes (&decl, TREE_VALUE (parm), 0);
+ 
++  /* begin-GG-local: explicit register specification for parameters */
++  if (asmspec)
++#ifdef TARGET_AMIGAOS
++    {
++      const char *regname=TREE_STRING_POINTER(asmspec);
++      int regnum;
++      if ((regnum=decode_reg_name(regname))>=0)
++	{
++	  tree type=TREE_TYPE(decl);
++	  if (HARD_REGNO_MODE_OK(regnum, TYPE_MODE(type)))
++	    {
++	      tree t, attrs;
++	      /* Build tree for __attribute__ ((asm(regnum))). */
++#if 0
++	      /* This doesn't work well because of a bug in
++		 attribute_list_contained(), which passes list of arguments to
++		 simple_cst_equal() instead of passing every argument
++		 separately. */
++	      attrs=tree_cons(get_identifier("asm"), tree_cons(NULL_TREE,
++		    build_int_2_wide(regnum, 0), NULL_TREE), NULL_TREE);
++#else
++	      attrs=tree_cons(get_identifier("asm"),
++			      build_int_2_wide(regnum, 0), NULL_TREE);
++#endif
++#if 0
++	      /* build_type_attribute_variant() would seem to be more
++		 appropriate here. However, that function does not support
++		 attributes for parameters properly. It modifies
++		 TYPE_MAIN_VARIANT of a new type. As a result, comptypes()
++		 thinks that types of parameters in prototype and definition
++		 are different and issues error messages. See also comment
++		 below. */
++	      type=build_type_attribute_variant(type, attrs);
++#else
++	      /* First check whether such a type already exists - if yes, use
++		 that one. This is very important, since otherwise
++		 common_type() would think that it sees two different
++		 types and would try to merge them - this could result in
++		 warning messages. */
++	      for (t=TYPE_MAIN_VARIANT(type); t; t=TYPE_NEXT_VARIANT(t))
++		if (comptypes(t, type, COMPARE_STRICT)==1
++		    && attribute_list_equal(TYPE_ATTRIBUTES(t), attrs))
++		      break;
++	      if (t)
++		type=t;
++	      else
++		{
++		  /* Create a new variant, with differing attributes.
++		     (Hack! Type with differing attributes should no longer be
++		     a variant of its main type. See comment above for
++		     explanation why this was necessary). */
++		  type=build_type_copy(type);
++		  TYPE_ATTRIBUTES(type)=attrs;
++		}
++#endif
++	      TREE_TYPE(decl)=type;
++	    }
++	  else
++	    error ("%Jregister specified for '%D' isn't suitable for data type",
++		   decl, decl);
++	}
++      else
++	error ("invalid register name `%s'", regname);
++    }
++#else /* !TARGET_AMIGAOS */
++    error("explicit register specification for parameters is not supported for this target");
++#endif /* !TARGET_AMIGAOS */
++  /* end-GG-local */
++
+   decl = pushdecl (decl);
+ 
+   finish_decl (decl, NULL_TREE, NULL_TREE);