# HG changeset patch
# User Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
# Date 1367393975 0
# Node ID 40f607bb0a2cf9845e31dcdb6453bc45dc720250
# Parent  e2e80a09338e4e3a032ab9fa04a3abb298780e8b
target-utils refactored

diff -r e2e80a09338e -r 40f607bb0a2c .hgignore
--- a/.hgignore	Wed May 01 03:41:42 2013 +0000
+++ b/.hgignore	Wed May 01 07:39:35 2013 +0000
@@ -7,9 +7,11 @@
 
 ^loadtools/fc-sertool
 
-^toolchain/binutils-2.21.1/
+^target-utils/.*/crt0\.S$
+
+^toolchain/binutils-2\.21\.1/
 ^toolchain/binutils-build/
-^toolchain/gcc-4.5.4/
+^toolchain/gcc-4\.5\.4/
 ^toolchain/gcc-build/
-^toolchain/newlib-2.0.0/
+^toolchain/newlib-2\.0\.0/
 ^toolchain/newlib-build/
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/Makefile
--- a/loadagent/Makefile	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,31 +0,0 @@
-CC=	arm-elf-gcc
-CFLAGS=	-Os -fno-builtin
-LD=	arm-elf-ld
-OBJCOPY=arm-elf-objcopy
-
-OBJS=	crt0.o main.o serio.o serwait.o
-PRINTF=	libprintf/libprintf.a
-
-TC_LIBS=`${CC} -print-file-name=libc.a` \
-	`${CC} -print-file-name=libgcc.a`
-
-all:	loadagent.bin loadagent.srec
-
-loadagent.elf:	${OBJS} ${PRINTF} loadagent.lds
-	${LD} -N -T loadagent.lds -o $@ ${OBJS} ${PRINTF} \
-		--start-group ${TC_LIBS} --end-group
-
-loadagent.bin:	loadagent.elf
-	${OBJCOPY} -O binary $< $@
-
-loadagent.srec:	loadagent.elf
-	${OBJCOPY} -O srec --srec-forceS3 --srec-len=30 $< $@
-
-${PRINTF}:	FRC
-	cd libprintf; make ${MFLAGS}
-
-clean:
-	rm -f *.o *errs *core *.elf *.bin *.srec
-	cd libprintf; make clean
-
-FRC:
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/crt0.S
--- a/loadagent/crt0.S	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,19 +0,0 @@
-#include "halt.h"
-
-	.text
-	.code	32
-	.global	_entry
-_entry:
-	ldr	sp, =stack_bottom
-@ zero bss
-	ldr	r0, =__bss_start
-	ldr	r2, =__bss_end
-	sub	r1, r2, r0
-	bl	bzero
-@ C code entry
-	bl	main
-	mov	r0, #HALTCODE_MAINEXITED
-	.global	_exit
-_exit:	nop
-1:	nop
-	b	1b
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/halt.h
--- a/loadagent/halt.h	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,10 +0,0 @@
-/*
- * In some error cases in our loadagent code we have no better course
- * of action available than to halt in a tight loop.  We define _exit()
- * to do the latter.  We have defined some codes for the argument value
- * that goes into R0; if you manage to hook up JTAG and get it to work,
- * you might be able to see what went wrong.
- */
-
-#define	HALTCODE_MAINEXITED	0x40
-#define	HALTCODE_INVALIDUART	0x41
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/Makefile
--- a/loadagent/libnosys/Makefile	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,16 +0,0 @@
-CC=	arm-elf-gcc
-CFLAGS=	-Os -mcpu=arm7tdmi -marm -mno-thumb-interwork
-AR=	arm-elf-ar
-RANLIB=	arm-elf-ranlib
-
-OBJS=	close.o fstat.o getpid.o isatty.o kill.o lseek.o open.o read.o sbrk.o \
-	stat.o unlink.o write.o
-
-all:	libnosys.a
-
-libnosys.a:	${OBJS}
-	${AR} cru $@ ${OBJS}
-	${RANLIB} $@
-
-clean:
-	rm -f *.[oa] *errs
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/close.c
--- a/loadagent/libnosys/close.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,25 +0,0 @@
-/* close.c -- close a file descriptor.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include "glue.h"
-
-/*
- * close -- We don't need to do anything, but pretend we did.
- */
-int
-_DEFUN (_close ,(fd),
-       int fd)
-{
-  return (0);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/fstat.c
--- a/loadagent/libnosys/fstat.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,30 +0,0 @@
-/* fstat.c -- get status of a file.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <sys/stat.h>
-#include "glue.h"
-
-/*
- * fstat -- Since we have no file system, we just return an error.
- */
-int
-_DEFUN (_fstat, (fd, buf),
-       int fd _AND
-       struct stat *buf)
-{
-  buf->st_mode = S_IFCHR;	/* Always pretend to be a tty */
-  buf->st_blksize = 0;
-
-  return (0);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/getpid.c
--- a/loadagent/libnosys/getpid.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,25 +0,0 @@
-/* getpid.c -- get the current process id.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include "glue.h"
-
-/*
- * getpid -- only one process, so just return 1.
- */
-int
-_DEFUN (_getpid, (),
-        )
-{
-  return __MYPID;
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/glue.h
--- a/loadagent/libnosys/glue.h	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,31 +0,0 @@
-/* glue.h -- common definitions for "glue" fucntions.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <_ansi.h>
-
-#ifndef NULL
-#  define NULL 0
-#endif
-
-#ifdef __NO_UNDERSCORE__
-#  define _end    end
-#  define _exit	  exit
-#endif
-
-extern char _end[];                /* _end is set in the linker command file */
-
-/* only one prcess support, as this is OS dependant */
-#define __MYPID 1
-
-
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/isatty.c
--- a/loadagent/libnosys/isatty.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,27 +0,0 @@
-/* isatty.c -- chek the terminal device.
- * 
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include "glue.h"
-
-/*
- * isatty -- returns 1 if connected to a terminal device,
- *           returns 0 if not. Since we're hooked up to a
- *           serial port, we'll say yes _AND return a 1.
- */
-int
-_DEFUN (_isatty, (fd),
-       int fd)
-{
-  return (1);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/kill.c
--- a/loadagent/libnosys/kill.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,28 +0,0 @@
-/* kill.c -- remove a process.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include "glue.h"
-
-/*
- * kill -- go out via exit...
- */
-int
-_DEFUN (_kill, (pid, sig),
-        int pid _AND 
-        int sig)
-{
-  if(pid == __MYPID)
-    _exit(sig);
-  return 0;
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/lseek.c
--- a/loadagent/libnosys/lseek.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,31 +0,0 @@
-/* lseek.c -- move read/write pointer.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <sys/types.h>
-#include <errno.h>
-#include "glue.h"
-
-/*
- * lseek --  Since a serial port is non-seekable, we return an error.
- */
-off_t
-_DEFUN (_lseek, (fd,  offset, whence),
-       int fd _AND
-       off_t offset _AND
-       int whence)
-{
-  errno = ESPIPE;
-  return ((off_t)-1);
-}
-
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/open.c
--- a/loadagent/libnosys/open.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,31 +0,0 @@
-/* open.c -- open a file.
- * 
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <errno.h>
-#include "glue.h"
-
-/*
- * open -- open a file descriptor. We don't have a filesystem, so
- *         we return an error.
- */
-int
-_DEFUN (_open, (buf, flags, mode),
-       const char *buf _AND
-       int flags _AND
-       int mode)
-{
-  errno = EIO;
-  return (-1);
-}
-
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/read.c
--- a/loadagent/libnosys/read.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,30 +0,0 @@
-/* read.c -- read bytes from a input device.
- * 
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include "glue.h"
-
-/*
- * read  -- read bytes from the serial port. Ignore fd, since
- *          we only have stdin.
- *
- * In the present version changed to always return EOF indication.
- */
-int
-_DEFUN (_read, (fd, buf, nbytes),
-       int fd _AND
-       char *buf _AND
-       int nbytes)
-{
-  return (0);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/sbrk.c
--- a/loadagent/libnosys/sbrk.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,55 +0,0 @@
-/* sbrk.c -- allocate memory dynamically.
- * 
- * Copyright (c) 1995,1996 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <errno.h>
-#include "glue.h"
-
-/* just in case, most boards have at least some memory */
-#ifndef RAMSIZE
-#  define RAMSIZE             (caddr_t)0x100000
-#endif
-
-char *heap_ptr;
-
-/*
- * sbrk -- changes heap size size. Get nbytes more
- *         RAM. We just increment a pointer in what's
- *         left of memory on the board.
- */
-char *
-_sbrk (nbytes)
-     int nbytes;
-{
-  char        *base;
-
-  if (!heap_ptr)
-    heap_ptr = (char *)&_end;
-  base = heap_ptr;
-  heap_ptr += nbytes;
-
-  return base;
-/* FIXME: We really want to make sure we don't run out of RAM, but this
- *       isn't very portable.
- */
-#if 0
-  if ((RAMSIZE - heap_ptr - nbytes) >= 0) {
-    base = heap_ptr;
-    heap_ptr += nbytes;
-    return (base);
-  } else {
-    errno = ENOMEM;
-    return ((char *)-1);
-  }
-#endif
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/stat.c
--- a/loadagent/libnosys/stat.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,30 +0,0 @@
-/* stat.c -- Get the status of a file.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <sys/stat.h>
-#include <errno.h>
-#include "glue.h"
-
-/*
- * stat -- Since we have no file system, we just return an error.
- */
-int
-_DEFUN (_stat, (path, buf),
-       const char *path _AND
-       struct stat *buf)
-{
-  errno = EIO;
-  return (-1);
-}
-
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/unlink.c
--- a/loadagent/libnosys/unlink.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,28 +0,0 @@
-/* unlink.c -- remove a file.
- * 
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <errno.h>
-#include "glue.h"
-
-/*
- * unlink -- since we have no file system, 
- *           we just return an error.
- */
-int
-_DEFUN (_unlink, (path),
-        char * path)
-{
-  errno = EIO;
-  return (-1);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libnosys/write.c
--- a/loadagent/libnosys/write.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,39 +0,0 @@
-/* write.c -- write bytes to an output device.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include "glue.h"
-
-extern int  _EXFUN (serial_out, (char x));
-
-/*
- * write -- write bytes to the serial port. Ignore fd, since
- *          stdout and stderr are the same. Since we have no filesystem,
- *          open will only return an error.
- */
-int
-_DEFUN (_write, (fd, buf, nbytes),
-       int fd _AND
-       char *buf _AND
-       int nbytes)
-{
-  int i;
-
-  for (i = 0; i < nbytes; i++) {
-    if (*(buf + i) == '\n') {
-      serial_out ('\r');
-    }
-    serial_out (*(buf + i));
-  }
-  return (nbytes);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/Makefile
--- a/loadagent/libprintf/Makefile	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,16 +0,0 @@
-CC=	arm-elf-gcc
-CFLAGS=	-Os -fno-builtin
-AR=	arm-elf-ar
-RANLIB=	arm-elf-ranlib
-
-OBJS=	doprnt.o printf.o putchar.o puts.o sprintf.o sprintf_putchar.o \
-	vprintf.o vsprintf.o
-
-all:	libprintf.a
-
-libprintf.a:	${OBJS}
-	${AR} cru $@ ${OBJS}
-	${RANLIB} $@
-
-clean:
-	rm -f *.[oa] *errs
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/README
--- a/loadagent/libprintf/README	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,15 +0,0 @@
-The present libprintf is a very light printf implementation that is well-suited
-for simple bare-metal programs like loadagent; in the present case it overrides
-the much heavier printf implementation in newlib.  Programs like the present
-loadagent only need printf in order to scribble on the serial console port,
-and the most sensible implementation is to have the "character output" function
-from the guts of printf point directly to the physical UART output routine, or
-a trivial wrapper that turns \n into \r\n.  In contrast, newlib's version would
-pull in the complete FILE table infrastructure and malloc etc - maybe OK for
-more complex embedded programs that use those facilities for other things under
-a bona fide RTOS, but it would be disgusting to pull that stuff in for a
-minimal program like ours.
-
-The present printf implementation has been used earlier by the same author
-(Michael Spacefalcon) in the StarMON family of PowerPC bootloaders, and in my
-MC68x302-based SDSL CPE devices (Hack-o-Rocket and OSDCU).
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/doprnt.c
--- a/loadagent/libprintf/doprnt.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,300 +0,0 @@
-/* the guts of printf - this implementation came from 4.3BSD-Tahoe */
-
-#include <sys/types.h>
-#include <ctype.h>
-#include <stdarg.h>
-
-#define	PUTC(ch)	((*outfunc)((ch), outfunc_param))
-
-#define	ARG() \
-	_ulong = flags&LONGINT ? va_arg(argp, long) : va_arg(argp, int);
-
-#define	BUF	256
-
-#define	todigit(c)	((c) - '0')
-#define	tochar(n)	((n) + '0')
-
-/* have to deal with the negative buffer count kludge */
-#define	NEGATIVE_COUNT_KLUDGE
-
-#define	LONGINT		0x01		/* long integer */
-#define	LONGDBL		0x02		/* long double; unimplemented */
-#define	SHORTINT	0x04		/* short integer */
-#define	ALT		0x08		/* alternate form */
-#define	LADJUST		0x10		/* left adjustment */
-#define	ZEROPAD		0x20		/* zero (as opposed to blank) pad */
-#define	HEXPREFIX	0x40		/* add 0x or 0X prefix */
-
-_doprnt(fmt0, argp, outfunc, outfunc_param)
-	u_char *fmt0;
-	va_list argp;
-	void (*outfunc)();
-	void *outfunc_param;
-{
-	register u_char *fmt;	/* format string */
-	register int ch;	/* character from fmt */
-	register int cnt;	/* return value accumulator */
-	register int n;		/* random handy integer */
-	register char *t;	/* buffer pointer */
-	u_long _ulong;		/* integer arguments %[diouxX] */
-	int base;		/* base for [diouxX] conversion */
-	int dprec;		/* decimal precision in [diouxX] */
-	int fieldsz;		/* field size expanded by sign, etc */
-	int flags;		/* flags as above */
-	int prec;		/* precision from format (%.3d), or -1 */
-	int realsz;		/* field size expanded by decimal precision */
-	int size;		/* size of converted field or string */
-	int width;		/* width from format (%8d), or 0 */
-	char sign;		/* sign prefix (' ', '+', '-', or \0) */
-	char softsign;		/* temporary negative sign for floats */
-	char *digs;		/* digits for [diouxX] conversion */
-	char buf[BUF];		/* space for %c, %[diouxX], %[eEfgG] */
-
-	fmt = fmt0;
-	digs = "0123456789abcdef";
-	for (cnt = 0;; ++fmt) {
-		for (; (ch = *fmt) && ch != '%'; ++cnt, ++fmt)
-			PUTC(ch);
-		if (!ch)
-			return (cnt);
-
-		flags = 0; dprec = 0; width = 0;
-		prec = -1;
-		sign = '\0';
-
-rflag:		switch (*++fmt) {
-		case ' ':
-			/*
-			 * ``If the space and + flags both appear, the space
-			 * flag will be ignored.''
-			 *	-- ANSI X3J11
-			 */
-			if (!sign)
-				sign = ' ';
-			goto rflag;
-		case '#':
-			flags |= ALT;
-			goto rflag;
-		case '*':
-			/*
-			 * ``A negative field width argument is taken as a
-			 * - flag followed by a  positive field width.''
-			 *	-- ANSI X3J11
-			 * They don't exclude field widths read from args.
-			 */
-			if ((width = va_arg(argp, int)) >= 0)
-				goto rflag;
-			width = -width;
-			/* FALLTHROUGH */
-		case '-':
-			flags |= LADJUST;
-			goto rflag;
-		case '+':
-			sign = '+';
-			goto rflag;
-		case '.':
-			if (*++fmt == '*')
-				n = va_arg(argp, int);
-			else {
-				n = 0;
-				while (isascii(*fmt) && isdigit(*fmt))
-					n = 10 * n + todigit(*fmt++);
-				--fmt;
-			}
-			prec = n < 0 ? -1 : n;
-			goto rflag;
-		case '0':
-			/*
-			 * ``Note that 0 is taken as a flag, not as the
-			 * beginning of a field width.''
-			 *	-- ANSI X3J11
-			 */
-			flags |= ZEROPAD;
-			goto rflag;
-		case '1': case '2': case '3': case '4':
-		case '5': case '6': case '7': case '8': case '9':
-			n = 0;
-			do {
-				n = 10 * n + todigit(*fmt);
-			} while (isascii(*++fmt) && isdigit(*fmt));
-			width = n;
-			--fmt;
-			goto rflag;
-		case 'L':
-			flags |= LONGDBL;
-			goto rflag;
-		case 'h':
-			flags |= SHORTINT;
-			goto rflag;
-		case 'l':
-			flags |= LONGINT;
-			goto rflag;
-		case 'c':
-			*(t = buf) = va_arg(argp, int);
-			size = 1;
-			sign = '\0';
-			goto pforw;
-		case 'D':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'd':
-		case 'i':
-			ARG();
-			if ((long)_ulong < 0) {
-				_ulong = -_ulong;
-				sign = '-';
-			}
-			base = 10;
-			goto number;
-		case 'n':
-			if (flags & LONGINT)
-				*va_arg(argp, long *) = cnt;
-			else if (flags & SHORTINT)
-				*va_arg(argp, short *) = cnt;
-			else
-				*va_arg(argp, int *) = cnt;
-			break;
-		case 'O':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'o':
-			ARG();
-			base = 8;
-			goto nosign;
-		case 'p':
-			/*
-			 * ``The argument shall be a pointer to void.  The
-			 * value of the pointer is converted to a sequence
-			 * of printable characters, in an implementation-
-			 * defined manner.''
-			 *	-- ANSI X3J11
-			 */
-			/* NOSTRICT */
-			_ulong = (u_long)va_arg(argp, void *);
-			base = 16;
-			goto nosign;
-		case 's':
-			if (!(t = va_arg(argp, char *)))
-				t = "(null)";
-			if (prec >= 0) {
-				/*
-				 * can't use strlen; can only look for the
-				 * NUL in the first `prec' characters, and
-				 * strlen() will go further.
-				 */
-				char *p;
-
-				for (p = t, size = 0; size < prec; p++, size++)
-					if (*p == '\0')
-						break;
-			} else
-				size = strlen(t);
-			sign = '\0';
-			goto pforw;
-		case 'U':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'u':
-			ARG();
-			base = 10;
-			goto nosign;
-		case 'X':
-			digs = "0123456789ABCDEF";
-			/* FALLTHROUGH */
-		case 'x':
-			ARG();
-			base = 16;
-			/* leading 0x/X only if non-zero */
-			if (flags & ALT && _ulong != 0)
-				flags |= HEXPREFIX;
-
-			/* unsigned conversions */
-nosign:			sign = '\0';
-			/*
-			 * ``... diouXx conversions ... if a precision is
-			 * specified, the 0 flag will be ignored.''
-			 *	-- ANSI X3J11
-			 */
-number:			if ((dprec = prec) >= 0)
-				flags &= ~ZEROPAD;
-
-			/*
-			 * ``The result of converting a zero value with an
-			 * explicit precision of zero is no characters.''
-			 *	-- ANSI X3J11
-			 */
-			t = buf + BUF;
-			if (_ulong != 0 || prec != 0) {
-				do {
-					*--t = digs[_ulong % base];
-					_ulong /= base;
-				} while (_ulong);
-				digs = "0123456789abcdef";
-				if (flags & ALT && base == 8 && *t != '0')
-					*--t = '0'; /* octal leading 0 */
-			}
-			size = buf + BUF - t;
-
-pforw:
-			/*
-			 * All reasonable formats wind up here.  At this point,
-			 * `t' points to a string which (if not flags&LADJUST)
-			 * should be padded out to `width' places.  If
-			 * flags&ZEROPAD, it should first be prefixed by any
-			 * sign or other prefix; otherwise, it should be blank
-			 * padded before the prefix is emitted.  After any
-			 * left-hand padding and prefixing, emit zeroes
-			 * required by a decimal [diouxX] precision, then print
-			 * the string proper, then emit zeroes required by any
-			 * leftover floating precision; finally, if LADJUST,
-			 * pad with blanks.
-			 */
-
-			/*
-			 * compute actual size, so we know how much to pad
-			 * fieldsz excludes decimal prec; realsz includes it
-			 */
-			fieldsz = size;
-			if (sign)
-				fieldsz++;
-			if (flags & HEXPREFIX)
-				fieldsz += 2;
-			realsz = dprec > fieldsz ? dprec : fieldsz;
-
-			/* right-adjusting blank padding */
-			if ((flags & (LADJUST|ZEROPAD)) == 0 && width)
-				for (n = realsz; n < width; n++)
-					PUTC(' ');
-			/* prefix */
-			if (sign)
-				PUTC(sign);
-			if (flags & HEXPREFIX) {
-				PUTC('0');
-				PUTC((char)*fmt);
-			}
-			/* right-adjusting zero padding */
-			if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
-				for (n = realsz; n < width; n++)
-					PUTC('0');
-			/* leading zeroes from decimal precision */
-			for (n = fieldsz; n < dprec; n++)
-				PUTC('0');
-
-			for (n = size; --n >= 0; )
-				PUTC(*t++);
-			/* left-adjusting padding (always blank) */
-			if (flags & LADJUST)
-				for (n = realsz; n < width; n++)
-					PUTC(' ');
-			/* finally, adjust cnt */
-			cnt += width > realsz ? width : realsz;
-			break;
-		case '\0':	/* "%?" prints ?, unless ? is NULL */
-			return (cnt);
-		default:
-			PUTC((char)*fmt);
-			cnt++;
-		}
-	}
-	/* NOTREACHED */
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/printf.c
--- a/loadagent/libprintf/printf.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,15 +0,0 @@
-#include <stdarg.h>
-
-extern void putchar();
-
-int
-printf(char *fmt, ...)
-{
-	va_list ap;
-	int len;
-
-	va_start(ap, fmt);
-	len = _doprnt(fmt, ap, &putchar);
-	va_end(ap);
-	return(len);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/putchar.c
--- a/loadagent/libprintf/putchar.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,9 +0,0 @@
-extern void serial_out();
-
-void
-putchar(ch)
-{
-	if (ch == '\n')
-		serial_out('\r');
-	serial_out(ch);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/puts.c
--- a/loadagent/libprintf/puts.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,10 +0,0 @@
-void
-puts(s)
-	char *s;
-{
-	int c;
-
-	while (c = *s++)
-		putchar(c);
-	putchar('\n');
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/sprintf.c
--- a/loadagent/libprintf/sprintf.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,18 +0,0 @@
-#include <stdarg.h>
-
-extern void _sprintf_putchar();
-
-int
-sprintf(char *strdest, char *fmt, ...)
-{
-	va_list ap;
-	char *strptr;
-	int len;
-
-	strptr = strdest;
-	va_start(ap, fmt);
-	len = _doprnt(fmt, ap, &_sprintf_putchar, &strptr);
-	va_end(ap);
-	*strptr = '\0';
-	return(len);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/sprintf_putchar.c
--- a/loadagent/libprintf/sprintf_putchar.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,8 +0,0 @@
-void
-_sprintf_putchar(ch, pp)
-	int ch;
-	char **pp;
-{
-	**pp = ch;
-	(*pp)++;
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/vprintf.c
--- a/loadagent/libprintf/vprintf.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,11 +0,0 @@
-#include <stdarg.h>
-
-extern void putchar();
-
-int
-vprintf(fmt, ap)
-	char *fmt;
-	va_list ap;
-{
-	return(_doprnt(fmt, ap, &putchar));
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/libprintf/vsprintf.c
--- a/loadagent/libprintf/vsprintf.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,17 +0,0 @@
-#include <stdarg.h>
-
-extern void _sprintf_putchar();
-
-int
-vsprintf(str, fmt, ap)
-	va_list ap;
-	char *str, *fmt;
-{
-	char *strptr;
-	int len;
-
-	strptr = str;
-	len = _doprnt(fmt, ap, &_sprintf_putchar, &strptr);
-	*strptr = '\0';
-	return(len);
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/loadagent.lds
--- a/loadagent/loadagent.lds	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,44 +0,0 @@
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-ENTRY(_entry)
-SECTIONS
-{
-    /* code */
-    . = 0x800750;
-    .text : {
-        /* regular code */
-        *(.text*)
-        /* gcc voodoo */
-        *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
-        . = ALIGN(4);
-    }
-
-    /* read-only data */
-    . = ALIGN(4);
-    .rodata : {
-        *(.rodata*)
-    }
-
-    /* initialized data */
-    . = ALIGN(4);
-    .data : {
-        *(.data)
-    }
-    PROVIDE(edata = .);
-
-    /* uninitialized data */
-    .bss (NOLOAD) : {
-        . = ALIGN(4);
-        __bss_start = .;
-        *(.bss)
-    }
-    . = ALIGN(4);
-    __bss_end = .;
-    /* end of image */
-    _end = .;
-    PROVIDE(end = .);
-}
-
-/* a few absolute definitions */
-rom_vars = 0x800518;
-stack_bottom = 0x83FFFC;
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/main.c
--- a/loadagent/main.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,44 +0,0 @@
-/*
- * FreeCalypso loadagent main() function lives here
- */
-
-#include "types.h"
-#include "romvars.h"
-#include "ns16550.h"
-#include "halt.h"
-
-#include <stdio.h>
-
-extern struct boot_rom_vars rom_vars;
-
-struct ns16550_regs *uart_base;
-char *uart_name;
-
-uart_select_init()
-{
-	switch (rom_vars.uart_id) {
-	case 0:
-		uart_base = (struct ns16550_regs *) 0xFFFF5800;
-		uart_name = "MODEM";
-		break;
-	case 1:
-		uart_base = (struct ns16550_regs *) 0xFFFF5000;
-		uart_name = "IrDA";
-		break;
-	default:
-		_exit(HALTCODE_INVALIDUART);
-	}
-}
-
-main()
-{
-	uart_select_init();
-	printf("FreeCalypso loadagent running\n");
-	printf("Loaded via UART %d (%s) at baud rate #%d\n", rom_vars.uart_id,
-		uart_name, rom_vars.baud_rate_code);
-	printf("TCXO clock input autodetected to be %d MHz\n",
-		rom_vars.clktcxo_13mhz ? 13 : 26);
-	/* interactive command mode to be implemented */
-	while (1)
-		;
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/ns16550.h
--- a/loadagent/ns16550.h	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,101 +0,0 @@
-#ifndef __NS16550_H
-#define	__NS16550_H
-
-/* NS16550 registers */
-#define	NS16550_RBR	0
-#define	NS16550_THR	0
-#define	NS16550_IER	1
-#define	NS16550_IIR	2
-#define	NS16550_FCR	2
-#define	NS16550_LCR	3
-#define	NS16550_MCR	4
-#define	NS16550_LSR	5
-#define	NS16550_MSR	6
-#define	NS16550_SCR	7
-#define	NS16550_DLL	0
-#define	NS16550_DLM	1
-
-#ifndef __ASSEMBLER__
-#include "types.h"
-
-struct ns16550_regs {
-	u8	datareg;
-	u8	ier;
-	u8	iir_fcr;
-	u8	lcr;
-	u8	mcr;
-	u8	lsr;
-	u8	msr;
-	u8	scr;
-};
-#endif
-
-/* IER bits */
-#define	NS16550_IER_EDSSI	0x08
-#define	NS16550_IER_ELSI	0x04
-#define	NS16550_IER_ETBEI	0x02
-#define	NS16550_IER_ERBFI	0x01
-
-/* IIR bits */
-#define	NS16550_IIR_FIFOEN	0xC0
-#define	NS16550_IIR_INTID	0x0E
-#define	NS16550_IIR_INT_RLS	0x06
-#define	NS16550_IIR_INT_RDA	0x04
-#define	NS16550_IIR_INT_CTO	0x0C
-#define	NS16550_IIR_INT_THRE	0x02
-#define	NS16550_IIR_INT_MODEM	0x00
-#define	NS16550_IIR_INTPEND	0x01
-
-/* FCR bits */
-
-#define	NS16550_FCR_RXTR	0xC0
-#define	NS16550_FCR_RXTR_1	0x00
-#define	NS16550_FCR_RXTR_4	0x40
-#define	NS16550_FCR_RXTR_8	0x80
-#define	NS16550_FCR_RXTR_14	0xC0
-#define	NS16550_FCR_DMAMODE	0x08
-#define	NS16550_FCR_TXRST	0x04
-#define	NS16550_FCR_RXRST	0x02
-#define	NS16550_FCR_FIFOEN	0x01
-
-/* LCR bits */
-#define	NS16550_LCR_DLAB	0x80
-#define	NS16550_LCR_BREAK	0x40
-#define	NS16550_LCR_STICK	0x20
-#define	NS16550_LCR_EPS		0x10
-#define	NS16550_LCR_PEN		0x08
-#define	NS16550_LCR_STB		0x04
-#define	NS16550_LCR_WLS		0x03
-#define	NS16550_LCR_WLS_5	0x00
-#define	NS16550_LCR_WLS_6	0x01
-#define	NS16550_LCR_WLS_7	0x02
-#define	NS16550_LCR_WLS_8	0x03
-
-/* MCR bits */
-#define	NS16550_MCR_LOOP	0x10
-#define	NS16550_MCR_OUT2	0x08
-#define	NS16550_MCR_OUT1	0x04
-#define	NS16550_MCR_RTS		0x02
-#define	NS16550_MCR_DTR		0x01
-
-/* LSR bits */
-#define	NS16550_LSR_ERR		0x80
-#define	NS16550_LSR_TEMP	0x40
-#define	NS16550_LSR_THRE	0x20
-#define	NS16550_LSR_BI		0x10
-#define	NS16550_LSR_FE		0x08
-#define	NS16550_LSR_PE		0x04
-#define	NS16550_LSR_OE		0x02
-#define	NS16550_LSR_DR		0x01
-
-/* MSR bits */
-#define	NS16550_MSR_DCD		0x80
-#define	NS16550_MSR_RI		0x40
-#define	NS16550_MSR_DSR		0x20
-#define	NS16550_MSR_CTS		0x10
-#define	NS16550_MSR_DDCD	0x08
-#define	NS16550_MSR_TERI	0x04
-#define	NS16550_MSR_DDSR	0x02
-#define	NS16550_MSR_DCTS	0x01
-
-#endif	/* __NS16550_H */
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/romvars.h
--- a/loadagent/romvars.h	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,36 +0,0 @@
-/*
- * Our loadagent will always be loaded into Calypso targets by the on-chip
- * boot ROM operating in the UART download mode.  The lowest IRAM address
- * at which we can load our code is 0x800750; somewhat lower at 0x800518
- * the boot ROM downloader has a few variables which may have been intended
- * to be private to the boot ROM, but which are useful to us.  For example,
- * by looking at these variables, we can see which of the two UARTs was
- * used to feed our code to the boot ROM, and use the same UART for
- * subsequent communication - without building multiple versions of our
- * loadagent or resorting to other ugliness.
- *
- * This header file defines the layout of the IRAM structure in question,
- * based on the disassembly of the boot ROM.
- */
-
-#ifndef __ROMVARS_H
-#define	__ROMVARS_H
-
-#include "types.h"
-
-struct boot_rom_vars {
-	u8	baud_rate_code;
-	u8	pad1[3];
-	u32	uart_timeout;
-	u8	uart_id;
-	u8	pll_config;
-	u16	cs_ws_config;
-	u8	clktcxo_13mhz;
-	u8	rhea_cntl;
-	u16	chksum_cmd;
-	u16	chksum_accum;
-	u16	pad2;
-	u32	branch_addr;
-};
-
-#endif	/* include guard */
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/serio.S
--- a/loadagent/serio.S	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,26 +0,0 @@
-#include "ns16550.h"
-
-@ this module implements the elementary serial I/O operations
-
-	.text
-	.code	32
-	.global	serial_out
-serial_out:
-	ldr	r1, =uart_base
-	ldr	r2, [r1]
-1:	ldrb	r3, [r2, #NS16550_LSR]
-	tst	r3, #NS16550_LSR_THRE
-	beq	1b
-	strb	r0, [r2, #NS16550_THR]
-	bx	lr
-
-	.global	serial_in_poll
-serial_in_poll:
-	ldr	r1, =uart_base
-	ldr	r2, [r1]
-	ldrb	r3, [r2, #NS16550_LSR]
-	tst	r3, #NS16550_LSR_DR
-	mvneq	r0, #1
-	bxeq	lr
-	ldrb	r0, [r2, #NS16550_RBR]
-	bx	lr
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/serwait.c
--- a/loadagent/serwait.c	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,14 +0,0 @@
-/* this C module is a wrapper around serio.S */
-/* we implement serial_in_wait() as a C wrapper around serial_in_poll() */
-
-extern int serial_in_poll();
-
-int serial_in_wait()
-{
-	register int c;
-
-	do
-		c = serial_in_poll();
-	while (c < 0);
-	return c;
-}
diff -r e2e80a09338e -r 40f607bb0a2c loadagent/types.h
--- a/loadagent/types.h	Wed May 01 03:41:42 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,18 +0,0 @@
-/*
- * I personally like the u8/u16/u32 types, but I don't see them
- * being defined in any of the headers provided by newlib.
- * So we'll define them ourselves.
- */
-
-#ifndef	__OUR_OWN_TYPES_H
-#define	__OUR_OWN_TYPES_H
-
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
-typedef signed char s8;
-typedef signed short s16;
-typedef signed int s32;
-
-#endif	/* include guard */
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/env/crt0.S
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/env/crt0.S	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,19 @@
+#include "halt.h"
+
+	.text
+	.code	32
+	.global	_entry
+_entry:
+	ldr	sp, =stack_bottom
+@ zero bss
+	ldr	r0, =__bss_start
+	ldr	r2, =__bss_end
+	sub	r1, r2, r0
+	bl	bzero
+@ C code entry
+	bl	main
+	mov	r0, #HALTCODE_MAINEXITED
+	.global	_exit
+_exit:	nop
+1:	nop
+	b	1b
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/env/iram.lds
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/env/iram.lds	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,54 @@
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_entry)
+SECTIONS
+{
+    /* code */
+    . = 0x800750;
+    .text : {
+        /* regular code */
+        *(.text*)
+        /* gcc voodoo */
+        *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
+        . = ALIGN(4);
+    }
+
+    /* read-only data */
+    . = ALIGN(4);
+    .rodata : {
+        *(.rodata*)
+    }
+
+    /* initialized data */
+    . = ALIGN(4);
+    .data : {
+        *(.data)
+    }
+    PROVIDE(edata = .);
+
+    /* uninitialized data */
+    .bss (NOLOAD) : {
+        . = ALIGN(4);
+        __bss_start = .;
+        *(.bss)
+    }
+    . = ALIGN(4);
+    __bss_end = .;
+    /* end of image */
+    _end = .;
+    PROVIDE(end = .);
+}
+
+/* a few absolute definitions */
+rom_vars = 0x800518;
+/* stack_bottom = 0x83FFFC; */
+
+/*
+ * stack_bottom will be set via the --defsym option to ld.
+ * Some programs have minimal IRAM requirements, so it would make more
+ * sense to set stack_bottom to 0x83FFFC, don't use the upper half of
+ * IRAM for anything, and make that program portable to Calypso Lite
+ * devices.  But for some other programs we might have some use for
+ * the larger IRAM of our full Calypso devices, in which case we would
+ * want to set stack_bottom to 0x87FFFC instead.
+ */
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/helloapp/Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/helloapp/Makefile	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,30 @@
+CC=	arm-elf-gcc
+CFLAGS=	-Os -fno-builtin
+CPPFLAGS=-I../include
+LD=	arm-elf-ld
+OBJCOPY=arm-elf-objcopy
+
+PROG=	helloapp
+OBJS=	crt0.o main.o mygetchar.o
+LIBS=	../libprintf/libprintf.a ../libcommon/libcommon.a
+LDS=	../env/iram.lds
+
+TC_LIBS=`${CC} -print-file-name=libc.a` \
+	`${CC} -print-file-name=libgcc.a`
+
+all:	${PROG}.srec
+
+crt0.S:	../env/crt0.S
+	ln -s $< .
+
+${PROG}.elf:	${OBJS} ${LIBS} ${LDS}
+	${LD} -N --defsym stack_bottom=0x83FFFC -T ${LDS} -o $@ ${OBJS} ${LIBS}\
+		--start-group ${TC_LIBS} --end-group
+
+${PROG}.srec:	${PROG}.elf
+	${OBJCOPY} -O srec --srec-forceS3 --srec-len=30 $< $@
+
+clean:
+	rm -f *.o *errs *core *.elf *.bin *.srec crt0.S
+
+FRC:
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/helloapp/main.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/helloapp/main.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,25 @@
+/*
+ * FreeCalypso loadagent main() function lives here
+ */
+
+#include "types.h"
+#include "romvars.h"
+
+#include <stdio.h>
+
+extern struct boot_rom_vars rom_vars;
+
+extern char *uart_name;
+
+main()
+{
+	uart_select_init();
+	printf("FreeCalypso loadagent running\n");
+	printf("Loaded via UART %d (%s) at baud rate #%d\n", rom_vars.uart_id,
+		uart_name, rom_vars.baud_rate_code);
+	printf("TCXO clock input autodetected to be %d MHz\n",
+		rom_vars.clktcxo_13mhz ? 13 : 26);
+	/* interactive command mode to be implemented */
+	while (1)
+		;
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/helloapp/mygetchar.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/helloapp/mygetchar.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,21 @@
+/*
+ * The interactive command entry (editing) function in libcommon
+ * will call mygetchar() for its character input.  It is supposed
+ * to be a blocking wait for input, but in some programs other
+ * processing can be done while waiting - for example, check for
+ * keypad presses as well.  This is the basic version which waits
+ * for serial input and nothing else.
+ */
+
+extern int serial_in_poll();
+
+int
+mygetchar()
+{
+	register int c;
+
+	do
+		c = serial_in_poll();
+	while (c < 0);
+	return c;
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/include/halt.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/include/halt.h	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,10 @@
+/*
+ * In some error cases in our loadagent code we have no better course
+ * of action available than to halt in a tight loop.  We define _exit()
+ * to do the latter.  We have defined some codes for the argument value
+ * that goes into R0; if you manage to hook up JTAG and get it to work,
+ * you might be able to see what went wrong.
+ */
+
+#define	HALTCODE_MAINEXITED	0x40
+#define	HALTCODE_INVALIDUART	0x41
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/include/ns16550.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/include/ns16550.h	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,101 @@
+#ifndef __NS16550_H
+#define	__NS16550_H
+
+/* NS16550 registers */
+#define	NS16550_RBR	0
+#define	NS16550_THR	0
+#define	NS16550_IER	1
+#define	NS16550_IIR	2
+#define	NS16550_FCR	2
+#define	NS16550_LCR	3
+#define	NS16550_MCR	4
+#define	NS16550_LSR	5
+#define	NS16550_MSR	6
+#define	NS16550_SCR	7
+#define	NS16550_DLL	0
+#define	NS16550_DLM	1
+
+#ifndef __ASSEMBLER__
+#include "types.h"
+
+struct ns16550_regs {
+	u8	datareg;
+	u8	ier;
+	u8	iir_fcr;
+	u8	lcr;
+	u8	mcr;
+	u8	lsr;
+	u8	msr;
+	u8	scr;
+};
+#endif
+
+/* IER bits */
+#define	NS16550_IER_EDSSI	0x08
+#define	NS16550_IER_ELSI	0x04
+#define	NS16550_IER_ETBEI	0x02
+#define	NS16550_IER_ERBFI	0x01
+
+/* IIR bits */
+#define	NS16550_IIR_FIFOEN	0xC0
+#define	NS16550_IIR_INTID	0x0E
+#define	NS16550_IIR_INT_RLS	0x06
+#define	NS16550_IIR_INT_RDA	0x04
+#define	NS16550_IIR_INT_CTO	0x0C
+#define	NS16550_IIR_INT_THRE	0x02
+#define	NS16550_IIR_INT_MODEM	0x00
+#define	NS16550_IIR_INTPEND	0x01
+
+/* FCR bits */
+
+#define	NS16550_FCR_RXTR	0xC0
+#define	NS16550_FCR_RXTR_1	0x00
+#define	NS16550_FCR_RXTR_4	0x40
+#define	NS16550_FCR_RXTR_8	0x80
+#define	NS16550_FCR_RXTR_14	0xC0
+#define	NS16550_FCR_DMAMODE	0x08
+#define	NS16550_FCR_TXRST	0x04
+#define	NS16550_FCR_RXRST	0x02
+#define	NS16550_FCR_FIFOEN	0x01
+
+/* LCR bits */
+#define	NS16550_LCR_DLAB	0x80
+#define	NS16550_LCR_BREAK	0x40
+#define	NS16550_LCR_STICK	0x20
+#define	NS16550_LCR_EPS		0x10
+#define	NS16550_LCR_PEN		0x08
+#define	NS16550_LCR_STB		0x04
+#define	NS16550_LCR_WLS		0x03
+#define	NS16550_LCR_WLS_5	0x00
+#define	NS16550_LCR_WLS_6	0x01
+#define	NS16550_LCR_WLS_7	0x02
+#define	NS16550_LCR_WLS_8	0x03
+
+/* MCR bits */
+#define	NS16550_MCR_LOOP	0x10
+#define	NS16550_MCR_OUT2	0x08
+#define	NS16550_MCR_OUT1	0x04
+#define	NS16550_MCR_RTS		0x02
+#define	NS16550_MCR_DTR		0x01
+
+/* LSR bits */
+#define	NS16550_LSR_ERR		0x80
+#define	NS16550_LSR_TEMP	0x40
+#define	NS16550_LSR_THRE	0x20
+#define	NS16550_LSR_BI		0x10
+#define	NS16550_LSR_FE		0x08
+#define	NS16550_LSR_PE		0x04
+#define	NS16550_LSR_OE		0x02
+#define	NS16550_LSR_DR		0x01
+
+/* MSR bits */
+#define	NS16550_MSR_DCD		0x80
+#define	NS16550_MSR_RI		0x40
+#define	NS16550_MSR_DSR		0x20
+#define	NS16550_MSR_CTS		0x10
+#define	NS16550_MSR_DDCD	0x08
+#define	NS16550_MSR_TERI	0x04
+#define	NS16550_MSR_DDSR	0x02
+#define	NS16550_MSR_DCTS	0x01
+
+#endif	/* __NS16550_H */
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/include/romvars.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/include/romvars.h	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,36 @@
+/*
+ * Our loadagent will always be loaded into Calypso targets by the on-chip
+ * boot ROM operating in the UART download mode.  The lowest IRAM address
+ * at which we can load our code is 0x800750; somewhat lower at 0x800518
+ * the boot ROM downloader has a few variables which may have been intended
+ * to be private to the boot ROM, but which are useful to us.  For example,
+ * by looking at these variables, we can see which of the two UARTs was
+ * used to feed our code to the boot ROM, and use the same UART for
+ * subsequent communication - without building multiple versions of our
+ * loadagent or resorting to other ugliness.
+ *
+ * This header file defines the layout of the IRAM structure in question,
+ * based on the disassembly of the boot ROM.
+ */
+
+#ifndef __ROMVARS_H
+#define	__ROMVARS_H
+
+#include "types.h"
+
+struct boot_rom_vars {
+	u8	baud_rate_code;
+	u8	pad1[3];
+	u32	uart_timeout;
+	u8	uart_id;
+	u8	pll_config;
+	u16	cs_ws_config;
+	u8	clktcxo_13mhz;
+	u8	rhea_cntl;
+	u16	chksum_cmd;
+	u16	chksum_accum;
+	u16	pad2;
+	u32	branch_addr;
+};
+
+#endif	/* include guard */
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/include/types.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/include/types.h	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,18 @@
+/*
+ * I personally like the u8/u16/u32 types, but I don't see them
+ * being defined in any of the headers provided by newlib.
+ * So we'll define them ourselves.
+ */
+
+#ifndef	__OUR_OWN_TYPES_H
+#define	__OUR_OWN_TYPES_H
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+
+typedef signed char s8;
+typedef signed short s16;
+typedef signed int s32;
+
+#endif	/* include guard */
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libcommon/Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libcommon/Makefile	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,16 @@
+CC=	arm-elf-gcc
+CFLAGS=	-Os -fno-builtin
+CPPFLAGS=-I../include
+AR=	arm-elf-ar
+RANLIB=	arm-elf-ranlib
+
+OBJS=	serio.o uartsel.o
+
+all:	libcommon.a
+
+libcommon.a:	${OBJS}
+	${AR} cru $@ ${OBJS}
+	${RANLIB} $@
+
+clean:
+	rm -f *.[oa] *errs
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libcommon/serio.S
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libcommon/serio.S	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,26 @@
+#include "ns16550.h"
+
+@ this module implements the elementary serial I/O operations
+
+	.text
+	.code	32
+	.global	serial_out
+serial_out:
+	ldr	r1, =uart_base
+	ldr	r2, [r1]
+1:	ldrb	r3, [r2, #NS16550_LSR]
+	tst	r3, #NS16550_LSR_THRE
+	beq	1b
+	strb	r0, [r2, #NS16550_THR]
+	bx	lr
+
+	.global	serial_in_poll
+serial_in_poll:
+	ldr	r1, =uart_base
+	ldr	r2, [r1]
+	ldrb	r3, [r2, #NS16550_LSR]
+	tst	r3, #NS16550_LSR_DR
+	mvneq	r0, #1
+	bxeq	lr
+	ldrb	r0, [r2, #NS16550_RBR]
+	bx	lr
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libcommon/uartsel.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libcommon/uartsel.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,31 @@
+/*
+ * uart_select_init() figures out which UART was used to load us
+ * through the boot ROM, and sets things up for us to use the same
+ * UART for our communication.
+ */
+
+#include "types.h"
+#include "romvars.h"
+#include "ns16550.h"
+#include "halt.h"
+
+extern struct boot_rom_vars rom_vars;
+
+struct ns16550_regs *uart_base;
+char *uart_name;
+
+uart_select_init()
+{
+	switch (rom_vars.uart_id) {
+	case 0:
+		uart_base = (struct ns16550_regs *) 0xFFFF5800;
+		uart_name = "MODEM";
+		break;
+	case 1:
+		uart_base = (struct ns16550_regs *) 0xFFFF5000;
+		uart_name = "IrDA";
+		break;
+	default:
+		_exit(HALTCODE_INVALIDUART);
+	}
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/Makefile	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,16 @@
+CC=	arm-elf-gcc
+CFLAGS=	-Os -fno-builtin
+AR=	arm-elf-ar
+RANLIB=	arm-elf-ranlib
+
+OBJS=	doprnt.o printf.o putchar.o puts.o sprintf.o sprintf_putchar.o \
+	vprintf.o vsprintf.o
+
+all:	libprintf.a
+
+libprintf.a:	${OBJS}
+	${AR} cru $@ ${OBJS}
+	${RANLIB} $@
+
+clean:
+	rm -f *.[oa] *errs
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/README
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/README	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,15 @@
+The present libprintf is a very light printf implementation that is well-suited
+for simple bare-metal programs like loadagent; in the present case it overrides
+the much heavier printf implementation in newlib.  Programs like the present
+loadagent only need printf in order to scribble on the serial console port,
+and the most sensible implementation is to have the "character output" function
+from the guts of printf point directly to the physical UART output routine, or
+a trivial wrapper that turns \n into \r\n.  In contrast, newlib's version would
+pull in the complete FILE table infrastructure and malloc etc - maybe OK for
+more complex embedded programs that use those facilities for other things under
+a bona fide RTOS, but it would be disgusting to pull that stuff in for a
+minimal program like ours.
+
+The present printf implementation has been used earlier by the same author
+(Michael Spacefalcon) in the StarMON family of PowerPC bootloaders, and in my
+MC68x302-based SDSL CPE devices (Hack-o-Rocket and OSDCU).
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/doprnt.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/doprnt.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,300 @@
+/* the guts of printf - this implementation came from 4.3BSD-Tahoe */
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <stdarg.h>
+
+#define	PUTC(ch)	((*outfunc)((ch), outfunc_param))
+
+#define	ARG() \
+	_ulong = flags&LONGINT ? va_arg(argp, long) : va_arg(argp, int);
+
+#define	BUF	256
+
+#define	todigit(c)	((c) - '0')
+#define	tochar(n)	((n) + '0')
+
+/* have to deal with the negative buffer count kludge */
+#define	NEGATIVE_COUNT_KLUDGE
+
+#define	LONGINT		0x01		/* long integer */
+#define	LONGDBL		0x02		/* long double; unimplemented */
+#define	SHORTINT	0x04		/* short integer */
+#define	ALT		0x08		/* alternate form */
+#define	LADJUST		0x10		/* left adjustment */
+#define	ZEROPAD		0x20		/* zero (as opposed to blank) pad */
+#define	HEXPREFIX	0x40		/* add 0x or 0X prefix */
+
+_doprnt(fmt0, argp, outfunc, outfunc_param)
+	u_char *fmt0;
+	va_list argp;
+	void (*outfunc)();
+	void *outfunc_param;
+{
+	register u_char *fmt;	/* format string */
+	register int ch;	/* character from fmt */
+	register int cnt;	/* return value accumulator */
+	register int n;		/* random handy integer */
+	register char *t;	/* buffer pointer */
+	u_long _ulong;		/* integer arguments %[diouxX] */
+	int base;		/* base for [diouxX] conversion */
+	int dprec;		/* decimal precision in [diouxX] */
+	int fieldsz;		/* field size expanded by sign, etc */
+	int flags;		/* flags as above */
+	int prec;		/* precision from format (%.3d), or -1 */
+	int realsz;		/* field size expanded by decimal precision */
+	int size;		/* size of converted field or string */
+	int width;		/* width from format (%8d), or 0 */
+	char sign;		/* sign prefix (' ', '+', '-', or \0) */
+	char softsign;		/* temporary negative sign for floats */
+	char *digs;		/* digits for [diouxX] conversion */
+	char buf[BUF];		/* space for %c, %[diouxX], %[eEfgG] */
+
+	fmt = fmt0;
+	digs = "0123456789abcdef";
+	for (cnt = 0;; ++fmt) {
+		for (; (ch = *fmt) && ch != '%'; ++cnt, ++fmt)
+			PUTC(ch);
+		if (!ch)
+			return (cnt);
+
+		flags = 0; dprec = 0; width = 0;
+		prec = -1;
+		sign = '\0';
+
+rflag:		switch (*++fmt) {
+		case ' ':
+			/*
+			 * ``If the space and + flags both appear, the space
+			 * flag will be ignored.''
+			 *	-- ANSI X3J11
+			 */
+			if (!sign)
+				sign = ' ';
+			goto rflag;
+		case '#':
+			flags |= ALT;
+			goto rflag;
+		case '*':
+			/*
+			 * ``A negative field width argument is taken as a
+			 * - flag followed by a  positive field width.''
+			 *	-- ANSI X3J11
+			 * They don't exclude field widths read from args.
+			 */
+			if ((width = va_arg(argp, int)) >= 0)
+				goto rflag;
+			width = -width;
+			/* FALLTHROUGH */
+		case '-':
+			flags |= LADJUST;
+			goto rflag;
+		case '+':
+			sign = '+';
+			goto rflag;
+		case '.':
+			if (*++fmt == '*')
+				n = va_arg(argp, int);
+			else {
+				n = 0;
+				while (isascii(*fmt) && isdigit(*fmt))
+					n = 10 * n + todigit(*fmt++);
+				--fmt;
+			}
+			prec = n < 0 ? -1 : n;
+			goto rflag;
+		case '0':
+			/*
+			 * ``Note that 0 is taken as a flag, not as the
+			 * beginning of a field width.''
+			 *	-- ANSI X3J11
+			 */
+			flags |= ZEROPAD;
+			goto rflag;
+		case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+			n = 0;
+			do {
+				n = 10 * n + todigit(*fmt);
+			} while (isascii(*++fmt) && isdigit(*fmt));
+			width = n;
+			--fmt;
+			goto rflag;
+		case 'L':
+			flags |= LONGDBL;
+			goto rflag;
+		case 'h':
+			flags |= SHORTINT;
+			goto rflag;
+		case 'l':
+			flags |= LONGINT;
+			goto rflag;
+		case 'c':
+			*(t = buf) = va_arg(argp, int);
+			size = 1;
+			sign = '\0';
+			goto pforw;
+		case 'D':
+			flags |= LONGINT;
+			/*FALLTHROUGH*/
+		case 'd':
+		case 'i':
+			ARG();
+			if ((long)_ulong < 0) {
+				_ulong = -_ulong;
+				sign = '-';
+			}
+			base = 10;
+			goto number;
+		case 'n':
+			if (flags & LONGINT)
+				*va_arg(argp, long *) = cnt;
+			else if (flags & SHORTINT)
+				*va_arg(argp, short *) = cnt;
+			else
+				*va_arg(argp, int *) = cnt;
+			break;
+		case 'O':
+			flags |= LONGINT;
+			/*FALLTHROUGH*/
+		case 'o':
+			ARG();
+			base = 8;
+			goto nosign;
+		case 'p':
+			/*
+			 * ``The argument shall be a pointer to void.  The
+			 * value of the pointer is converted to a sequence
+			 * of printable characters, in an implementation-
+			 * defined manner.''
+			 *	-- ANSI X3J11
+			 */
+			/* NOSTRICT */
+			_ulong = (u_long)va_arg(argp, void *);
+			base = 16;
+			goto nosign;
+		case 's':
+			if (!(t = va_arg(argp, char *)))
+				t = "(null)";
+			if (prec >= 0) {
+				/*
+				 * can't use strlen; can only look for the
+				 * NUL in the first `prec' characters, and
+				 * strlen() will go further.
+				 */
+				char *p;
+
+				for (p = t, size = 0; size < prec; p++, size++)
+					if (*p == '\0')
+						break;
+			} else
+				size = strlen(t);
+			sign = '\0';
+			goto pforw;
+		case 'U':
+			flags |= LONGINT;
+			/*FALLTHROUGH*/
+		case 'u':
+			ARG();
+			base = 10;
+			goto nosign;
+		case 'X':
+			digs = "0123456789ABCDEF";
+			/* FALLTHROUGH */
+		case 'x':
+			ARG();
+			base = 16;
+			/* leading 0x/X only if non-zero */
+			if (flags & ALT && _ulong != 0)
+				flags |= HEXPREFIX;
+
+			/* unsigned conversions */
+nosign:			sign = '\0';
+			/*
+			 * ``... diouXx conversions ... if a precision is
+			 * specified, the 0 flag will be ignored.''
+			 *	-- ANSI X3J11
+			 */
+number:			if ((dprec = prec) >= 0)
+				flags &= ~ZEROPAD;
+
+			/*
+			 * ``The result of converting a zero value with an
+			 * explicit precision of zero is no characters.''
+			 *	-- ANSI X3J11
+			 */
+			t = buf + BUF;
+			if (_ulong != 0 || prec != 0) {
+				do {
+					*--t = digs[_ulong % base];
+					_ulong /= base;
+				} while (_ulong);
+				digs = "0123456789abcdef";
+				if (flags & ALT && base == 8 && *t != '0')
+					*--t = '0'; /* octal leading 0 */
+			}
+			size = buf + BUF - t;
+
+pforw:
+			/*
+			 * All reasonable formats wind up here.  At this point,
+			 * `t' points to a string which (if not flags&LADJUST)
+			 * should be padded out to `width' places.  If
+			 * flags&ZEROPAD, it should first be prefixed by any
+			 * sign or other prefix; otherwise, it should be blank
+			 * padded before the prefix is emitted.  After any
+			 * left-hand padding and prefixing, emit zeroes
+			 * required by a decimal [diouxX] precision, then print
+			 * the string proper, then emit zeroes required by any
+			 * leftover floating precision; finally, if LADJUST,
+			 * pad with blanks.
+			 */
+
+			/*
+			 * compute actual size, so we know how much to pad
+			 * fieldsz excludes decimal prec; realsz includes it
+			 */
+			fieldsz = size;
+			if (sign)
+				fieldsz++;
+			if (flags & HEXPREFIX)
+				fieldsz += 2;
+			realsz = dprec > fieldsz ? dprec : fieldsz;
+
+			/* right-adjusting blank padding */
+			if ((flags & (LADJUST|ZEROPAD)) == 0 && width)
+				for (n = realsz; n < width; n++)
+					PUTC(' ');
+			/* prefix */
+			if (sign)
+				PUTC(sign);
+			if (flags & HEXPREFIX) {
+				PUTC('0');
+				PUTC((char)*fmt);
+			}
+			/* right-adjusting zero padding */
+			if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
+				for (n = realsz; n < width; n++)
+					PUTC('0');
+			/* leading zeroes from decimal precision */
+			for (n = fieldsz; n < dprec; n++)
+				PUTC('0');
+
+			for (n = size; --n >= 0; )
+				PUTC(*t++);
+			/* left-adjusting padding (always blank) */
+			if (flags & LADJUST)
+				for (n = realsz; n < width; n++)
+					PUTC(' ');
+			/* finally, adjust cnt */
+			cnt += width > realsz ? width : realsz;
+			break;
+		case '\0':	/* "%?" prints ?, unless ? is NULL */
+			return (cnt);
+		default:
+			PUTC((char)*fmt);
+			cnt++;
+		}
+	}
+	/* NOTREACHED */
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/printf.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/printf.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,15 @@
+#include <stdarg.h>
+
+extern void putchar();
+
+int
+printf(char *fmt, ...)
+{
+	va_list ap;
+	int len;
+
+	va_start(ap, fmt);
+	len = _doprnt(fmt, ap, &putchar);
+	va_end(ap);
+	return(len);
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/putchar.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/putchar.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,9 @@
+extern void serial_out();
+
+void
+putchar(ch)
+{
+	if (ch == '\n')
+		serial_out('\r');
+	serial_out(ch);
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/puts.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/puts.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,10 @@
+void
+puts(s)
+	char *s;
+{
+	int c;
+
+	while (c = *s++)
+		putchar(c);
+	putchar('\n');
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/sprintf.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/sprintf.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,18 @@
+#include <stdarg.h>
+
+extern void _sprintf_putchar();
+
+int
+sprintf(char *strdest, char *fmt, ...)
+{
+	va_list ap;
+	char *strptr;
+	int len;
+
+	strptr = strdest;
+	va_start(ap, fmt);
+	len = _doprnt(fmt, ap, &_sprintf_putchar, &strptr);
+	va_end(ap);
+	*strptr = '\0';
+	return(len);
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/sprintf_putchar.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/sprintf_putchar.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,8 @@
+void
+_sprintf_putchar(ch, pp)
+	int ch;
+	char **pp;
+{
+	**pp = ch;
+	(*pp)++;
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/vprintf.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/vprintf.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,11 @@
+#include <stdarg.h>
+
+extern void putchar();
+
+int
+vprintf(fmt, ap)
+	char *fmt;
+	va_list ap;
+{
+	return(_doprnt(fmt, ap, &putchar));
+}
diff -r e2e80a09338e -r 40f607bb0a2c target-utils/libprintf/vsprintf.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libprintf/vsprintf.c	Wed May 01 07:39:35 2013 +0000
@@ -0,0 +1,17 @@
+#include <stdarg.h>
+
+extern void _sprintf_putchar();
+
+int
+vsprintf(str, fmt, ap)
+	va_list ap;
+	char *str, *fmt;
+{
+	char *strptr;
+	int len;
+
+	strptr = str;
+	len = _doprnt(fmt, ap, &_sprintf_putchar, &strptr);
+	*strptr = '\0';
+	return(len);
+}