merge netbsd/powerpc gcc changes from toolchain/gcc

gnu/dist/gcc/config/rs6000/netbsd.h

@@ -0,0 +1,102 @@
+/* Start with SVR4 defaults. */
+#include <rs6000/sysv4.h>
+
+/* Get generic NetBSD definitions.  */
+
+#include <netbsd.h>
+
+/* Use bcopy etc. instead of memcpy etc. */
+#undef	TARGET_MEM_FUNCTIONS
+
+#undef SDB_DEBUGGING_INFO
+#define SDB_DEBUGGING_INFO
+#undef DBX_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE \
+  ((len > 1 && !strncmp (str, "gsdb", len)) ? SDB_DEBUG : DBX_DEBUG)
+
+/* Names to predefine in the preprocessor for this target machine.  */
+#undef	CPP_PREDEFINES
+#define CPP_PREDEFINES "-DPPC -D__powerpc__ -D__NetBSD__ -Asystem(unix) -Asystem(NetBSD) -Acpu(powerpc) -Amachine(powerpc)"
+
+/* Make gcc agree with <machine/ansi.h> */
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+/* Don't default to pcc-struct-return, because gcc is the only compiler, and
+   we want to retain compatibility with older gcc versions.  */
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+/* XXX Duplicated from sysv4.h  --thorpej@netbsd.org
+   Pass -mppc to the assembler, since that is what powerpc.h currently
+   implies */
+#undef ASM_SPEC
+#define ASM_SPEC \
+  "-u \
+%{mcpu=601: -m601} %{!mcpu=601: -mppc} \
+%{V} %{v:%{!V:-V}} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
+%{mrelocatable} \
+%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
+
+/* The `multiple' instructions may not be universally implemented.
+   We avoid their use here. */
+#undef	CC1_SPEC
+#define	CC1_SPEC	"-mno-multiple"
+
+/* Provide a LINK_SPEC approriate for NetBSD. */
+#undef	LINK_SPEC
+#define LINK_SPEC " \
+  %{O*:-O3} %{!O*:-O1}						\
+  %{assert*}							\
+  %{shared:-shared}						\
+  %{!shared:							\
+    -dc -dp							\
+    %{!nostdlib:%{!r*:%{!e*:-e _start}}}			\
+    %{!static:							\
+      %{rdynamic:-export-dynamic}				\
+      %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}} \
+    %{static:-static}}"
+
+/* Provide a STARTFILE_SPEC appropriate for NetBSD.  Here we add
+   the crtbegin.o file (see crtstuff.c) which provides part of the
+   support for getting C++ file-scope static object constructed
+   before entering `main'. */
+
+#undef	STARTFILE_SPEC
+#define	STARTFILE_SPEC " \
+  %{!shared: \
+    %{pg:gcrt0.o%s} \
+    %{!pg: \
+      %{p:gcrt0.o%s} \
+      %{!p:crt0.o%s}}} \
+  crtbegin.o%s"
+
+/* Provide a ENDFILE_SPEC appropriate for NetBSD.  Here we tack on
+   the file which provides part of the support for getting C++
+   file-scope static object deconstructed after exiting `main' */
+
+#undef	ENDFILE_SPEC
+#define	ENDFILE_SPEC \
+  "crtend.o%s"
+
+/* XXX Sort of a mix of ../netbsd.h and sysv4.h  --thorpej@netbsd.org
+   Provide a CPP_SPEC appropriate for NetBSD.  Currently we just deal with
+   the GCC option `-posix' and the calling convention definition.  */
+
+#undef CPP_SPEC
+#define CPP_SPEC "\
+%{posix:-D_POSIX_SOURCE} \
+%{mcall-sysv: -D_CALL_SYSV} %{mcall-aix: -D_CALL_AIX} %{!mcall-sysv: %{!mcall-aix: -D_CALL_SYSV}}"
+