these are my NetBSD/sparc64 compiler descriptions. treat only as "work in progress."

gnu/dist/gcc/config/sparc/netbsd64.h

@@ -0,0 +1,76 @@
+/* netbsd sparc64 ELF configuration */
+
+#include <sparc/sp64-elf.h>
+
+/* remove unix and maybe __sparc__ ? */
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-Dunix -D__sparc__ -D__sparc64__ -D__NetBSD__ -D__KPRINTF_ATTRIBUTE__"
+
+/* clean up after <sparc/sp64-elf.h> */
+#undef CPP_SUBTARGET_SPEC
+#define CPP_SUBTARGET_SPEC ""
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned long"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "long"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef WCHAR_UNSIGNED
+#define WCHAR_UNSIGNED 0
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
+/* This is the char to use for continuation (in case we need to turn
+   continuation back on).  */
+#undef DBX_CONTIN_CHAR
+#define DBX_CONTIN_CHAR '?'
+
+/*#undef ASM_OUTPUT_SKIP*/
+
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(REGNO) \
+  (TARGET_FLAT && REGNO == FRAME_POINTER_REGNUM ? 31 : REGNO)
+
+/* This is how to output a definition of an internal numbered label where
+   PREFIX is the class of label and NUM is the number within the class.  */
+
+#undef  ASM_OUTPUT_INTERNAL_LABEL
+#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)	\
+  fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
+
+/* This is how to store into the string LABEL
+   the symbol_ref name of an internal numbered label where
+   PREFIX is the class of label and NUM is the number within the class.
+   This is suitable for output with `assemble_name'.  */
+
+#undef  ASM_GENERATE_INTERNAL_LABEL
+#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)	\
+  sprintf ((LABEL), "*.L%s%ld", (PREFIX), (long)(NUM))
+
+#undef ASM_SPEC
+#define ASM_SPEC "\
+%%{fpic:-K PIC} %{fPIC:-K PIC} \
+%{mlittle-endian:-EL} \
+%(asm_cpu) %(asm_arch) \
+"
+
+#undef STDC_0_IN_SYSTEM_HEADERS
+
+#define NETBSD_ELF
+#include <netbsd.h>
+
+/* Name the port. */
+#undef TARGET_NAME
+#define TARGET_NAME     "sparc64-netbsd"
+
+/* XXX Redefine this; <sparc/sparc.h> mucks with it. */
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);

gnu/dist/gcc/config/sparc/xm-netbsd64.h

@@ -0,0 +1,4 @@
+/* Configuration for GCC for Sun SPARC V9 running NetBSD as host.  */
+
+#include <xm-netbsd.h>
+#include <sparc/xm-sp64.h>