m32c support contribution

[Jeff Johnston]

Thanks DJ.  The patch has been applied.

Regarding chip maintainers, feel free to add a new section to the 
MAINTAINERS file with yourself as the maintainer for m32c.  You may make 
m32-specific changes without permission.  Any changes that affect shared 
files are write-after-approval.

-- Jeff J.

DJ Delorie wrote:
> On behalf of Red Hat Inc, I would like to contribute support for the
> Renesas M32C family of CPUs to libgloss and newlib.
> 
> I offer to be the maintainer, yet I don't see chip maintainers listed
> in newlib's MAINTAINERS file.
> 
> Patch (changes) and tarball (new files) attached.  The copyright is
> the default Red Hat BSD-like (no ad) license.
> 
> [libgloss]
> 
> 	* configure.in: Add m32c support.
> 	* configure: Regenerated
> 	* m32c: New directory, Renesas R8C/M16C/M32C support.
> 
> [newlib]
> 
> 	* configure.host: Add m32c support.
> 	* libc/include/machine/ieeefp.h: Likewise.
> 	* libc/include/machine/setjmp.h: Likewise.
> 	* libc/include/sys/config.h: Likewise.
> 	* libc/machine/m32c: New directory, Renesas R8C/M16C/M32C support.
> 
> Index: libgloss/configure
> ===================================================================
> RCS file: /cvs/src/src/libgloss/configure,v
> retrieving revision 1.12
> diff -p -U3 -r1.12  libgloss/configure
> --- libgloss/configure	6 Jul 2005 12:58:09 -0000	1.12
> +++ libgloss/configure	28 Jul 2005 19:02:07 -0000
> @@ -797,6 +797,9 @@ case "${target}" in
>    xstormy16-*-*)
>  	configdirs="${configdirs} xstormy16 testsuite"
>  	;;
> +  m32c-*-*)
> +	configdirs="${configdirs} m32c testsuite"
> +	;;
>    strongarm-*-elf | strongarm-*-coff)
>  	configdirs="${configdirs} arm testsuite";
>  	;;
> Index: libgloss/configure.in
> ===================================================================
> RCS file: /cvs/src/src/libgloss/configure.in,v
> retrieving revision 1.12
> diff -p -U3 -r1.12  libgloss/configure.in
> --- libgloss/configure.in	6 Jul 2005 12:58:09 -0000	1.12
> +++ libgloss/configure.in	28 Jul 2005 19:02:07 -0000
> @@ -108,6 +108,9 @@ case "${target}" in
>    xstormy16-*-*)
>  	configdirs="${configdirs} xstormy16 testsuite"
>  	;;
> +  m32c-*-*)
> +	configdirs="${configdirs} m32c testsuite"
> +	;;
>    strongarm-*-elf | strongarm-*-coff)
>  	configdirs="${configdirs} arm testsuite";
>  	;;
> Index: newlib/configure.host
> ===================================================================
> RCS file: /cvs/src/src/newlib/configure.host,v
> retrieving revision 1.74
> diff -p -U3 -r1.74  newlib/configure.host
> --- newlib/configure.host	6 Jul 2005 13:14:09 -0000	1.74
> +++ newlib/configure.host	28 Jul 2005 19:02:08 -0000
> @@ -67,7 +67,7 @@ case "${target_optspace}:${host}" in
>    yes:*)
>      newlib_cflags="${newlib_cflags} -Os"
>      ;;
> -  :m32r-* | :d10v-* | :d30v-* | :avr-*)
> +  :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* )
>      newlib_cflags="${newlib_cflags} -Os"
>      ;;
>    no:* | :*)
> @@ -145,6 +145,11 @@ case "${host_cpu}" in
>    iq2000)
>  	machine_dir=iq2000
>  	;;
> +  m32c)
> +	machine_dir=m32c
> +	newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DABORT_PROVIDED -DSMALL_MEMORY"
> +	;;
> +
>    m32r*)
>  	machine_dir=m32r
>  	;;
> Index: newlib/libc/include/machine/ieeefp.h
> ===================================================================
> RCS file: /cvs/src/src/newlib/libc/include/machine/ieeefp.h,v
> retrieving revision 1.26
> diff -p -U3 -r1.26  newlib/libc/include/machine/ieeefp.h
> --- newlib/libc/include/machine/ieeefp.h	6 Jul 2005 13:14:10 -0000	1.26
> +++ newlib/libc/include/machine/ieeefp.h	28 Jul 2005 19:02:08 -0000
> @@ -269,6 +269,11 @@
>  #endif /* __ARMEL__ */
>  #endif /* __MAVERICK__ */
>  
> +#ifdef __m32c__
> +#define __IEEE_LITTLE_ENDIAN
> +#define __SMALL_BITFIELDS
> +#endif
> +
>  #ifdef __CRIS__
>  #define __IEEE_LITTLE_ENDIAN
>  #endif
> Index: newlib/libc/include/machine/setjmp.h
> ===================================================================
> RCS file: /cvs/src/src/newlib/libc/include/machine/setjmp.h,v
> retrieving revision 1.25
> diff -p -U3 -r1.25  newlib/libc/include/machine/setjmp.h
> --- newlib/libc/include/machine/setjmp.h	6 Jul 2005 13:14:10 -0000	1.25
> +++ newlib/libc/include/machine/setjmp.h	28 Jul 2005 19:02:08 -0000
> @@ -213,6 +213,15 @@ _BEGIN_STD_C
>  #define _JBLEN 18
>  #endif
>  
> +#ifdef __m32c__
> +#if defined(__r8c_cpu__) || defined(__m16c_cpu__)
> +#define _JBLEN (22/2)
> +#else
> +#define _JBLEN (34/2)
> +#endif
> +#define _JBTYPE unsigned short
> +#endif /* __m32c__ */
> +
>  #ifdef _JBLEN
>  #ifdef _JBTYPE
>  typedef	_JBTYPE jmp_buf[_JBLEN];
> Index: newlib/libc/include/sys/config.h
> ===================================================================
> RCS file: /cvs/src/src/newlib/libc/include/sys/config.h,v
> retrieving revision 1.40
> diff -p -U3 -r1.40  newlib/libc/include/sys/config.h
> --- newlib/libc/include/sys/config.h	22 Jun 2004 21:54:51 -0000	1.40
> +++ newlib/libc/include/sys/config.h	28 Jul 2005 19:02:08 -0000
> @@ -105,6 +105,22 @@
>  #define __BUFSIZ__ 16
>  #define _REENT_SMALL
>  #endif
> +#ifdef __m32c__
> +#define __SMALL_BITFIELDS
> +#undef INT_MAX
> +#undef UINT_MAX
> +#define INT_MAX __INT_MAX__
> +#define UINT_MAX (__INT_MAX__ * 2U + 1)
> +#define MALLOC_ALIGNMENT 8
> +#if defined(__r8c_cpu__) || defined(__m16c_cpu__)
> +#define _POINTER_INT short
> +#else
> +#define _POINTER_INT long
> +#endif
> +#define __BUFSIZ__ 16
> +#define _REENT_SMALL
> +#endif /* __m32c__ */
> +
>  
>  /* This block should be kept in sync with GCC's limits.h.  The point
>     of having these definitions here is to not include limits.h, which
>