2012-09-26 Ian Bolton <ian.bolton@arm.com>

libgloss/ChangeLog

@@ -1,3 +1,29 @@
+2012-09-26  Ian Bolton  <ian.bolton@arm.com>
+        Jim MacArthur  <jim.macarthur@arm.com>
+        Marcus Shawcroft  <marcus.shawcroft@arm.com>
+        Nigel Stephens  <nigel.stephens@arm.com>
+        Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
+        Richard Earnshaw  <rearnsha@arm.com>
+        Sofiane Naci  <sofiane.naci@arm.com>
+        Tejas Belagod  <tejas.belagod@arm.com>
+        Yufeng Zhang  <yufeng.zhang@arm.com>
+
+	* aarch64/Makefile.in: New file.
+	* aarch64/_exit.c: New file.
+	* aarch64/_kill.c: New file.
+	* aarch64/aclocal.m4: Generated.
+	* aarch64/configure: Generated.
+	* aarch64/configure.in: New file.
+	* aarch64/cpu-init/Makefile.in: New file.
+	* aarch64/cpu-init/rdimon-aem-el3.S: New file.
+	* aarch64/crt0.S: New file.
+	* aarch64/elf-rdimon.specs: New file.
+	* aarch64/libcfunc.c: New file.
+	* aarch64/svc.h: New file.
+	* aarch64/syscalls.c: New file.
+	* configure.in: Add AArch64.
+	* configure: Re-generated.
+
 2012-09-13  Anthony Green  <green@moxielogic.com>
 
 	* moxie/moxie-elf-common.ld: Add bi-endian support.

libgloss/aarch64/Makefile.in

@@ -0,0 +1,181 @@
+#  Copyright (c) 2012 ARM Ltd.  All rights reserved.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#  1. Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#  2. Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#  3. The name of the company may not be used to endorse or promote
+#     products derived from this software without specific prior written
+#     permission.
+#
+#  THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+#  IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+#  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+#  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+#  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+#  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+DESTDIR =
+VPATH = @srcdir@ @srcdir@/..
+srcdir = @srcdir@
+objdir = .
+srcroot = $(srcdir)/../..
+objroot = $(objdir)/../..
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+host_alias = @host_alias@
+target_alias = @target_alias@
+
+bindir = @bindir@
+libdir = @libdir@
+tooldir = $(exec_prefix)/$(target_alias)
+
+objtype = @objtype@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+# Multilib support variables.
+# TOP is used instead of MULTI{BUILD,SRC}TOP.
+MULTISRCTOP =
+MULTIBUILDTOP =
+MULTIDIRS =
+MULTISUBDIR =
+MULTIDO = true
+MULTICLEAN = true
+
+SHELL =	/bin/sh
+
+CC = @CC@
+
+AS = @AS@
+AR = @AR@
+LD = @LD@
+RANLIB = @RANLIB@
+
+SUBDIRS = @subdirs@
+
+OBJDUMP = `if [ -f ${objroot}/../binutils/objdump ] ; \
+	then echo ${objroot}/../binutils/objdump ; \
+	else t='$(program_transform_name)'; echo objdump | sed -e $$t ; fi`
+OBJCOPY = `if [ -f ${objroot}/../binutils/objcopy ] ; \
+	then echo ${objroot}/../binutils/objcopy ; \
+	else t='$(program_transform_name)'; echo objcopy | sed -e $$t ; fi`
+
+OBJS = syscalls.o libcfunc.o _exit.o _kill.o
+CRT0		= crt0.o
+CRT0_INSTALL	= install-crt0
+
+CRT0_INSTALL	= install-crt0
+RDIMON_CRT0	= rdimon-crt0.o
+RDIMON_BSP	= librdimon.a
+RDIMON_OBJS	= $(patsubst %,rdimon-%,$(OBJS))
+RDIMON_SCRIPTS	= rdimon.specs
+RDIMON_INSTALL	= install-rdimon
+
+CFLAGS		= -g
+
+# Host specific makefile fragment comes in here.
+@host_makefile_frag@
+
+#
+# build a test program for each target board. Just trying to get
+# it to link is a good test, so we ignore all the errors for now.
+#
+all: ${CRT0} ${RDIMON_CRT0} ${RDIMON_BSP}
+	@rootpre=`pwd`/; export rootpre; \
+	srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
+	for dir in .. ${SUBDIRS}; do \
+	  if [ x$$dir != x.. ]; then \
+	    if [ -d $$dir ]; then \
+	      (cd $$dir; $(MAKE) $(FLAGS_TO_PASS)); \
+	    else true; fi; \
+	  else true; fi; \
+	done
+
+#
+# here's where we build the test programs for each target
+#
+.PHONY: test
+test:
+
+#
+crt0.o: crt0.S
+rdimon-crt0.o: crt0.S
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+#rdimon-trap.o: trap.S
+#	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+rdimon-_exit.o: _exit.c
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+rdimon-_kill.o: _kill.c
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+rdimon-syscalls.o: syscalls.c
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+rdimon-libcfunc.o: libcfunc.c
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+$(RDIMON_BSP): $(RDIMON_OBJS)
+	${AR} ${ARFLAGS} $@ $^
+	${RANLIB} $@
+
+clean mostlyclean:
+	rm -f a.out core *.i *.o *-test *.srec *.dis *.x $(SIM_BSP)
+	@rootpre=`pwd`/; export rootpre; \
+	srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
+	for dir in .. ${SUBDIRS}; do \
+	  if [ x$$dir != x.. ]; then \
+	    if [ -d $$dir ]; then \
+	      (cd $$dir; $(MAKE) $(FLAGS_TO_PASS) clean); \
+	    else true; fi; \
+	  else true; fi; \
+	done
+
+distclean maintainer-clean realclean: clean
+	rm -f Makefile config.status *~
+
+.PHONY: install info install-info clean-info
+install: ${CRT0_INSTALL} ${RDIMON_INSTALL}
+	@rootpre=`pwd`/; export rootpre; \
+	srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
+	for dir in .. ${SUBDIRS}; do \
+	  if [ x$$dir != x.. ]; then \
+	    if [ -d $$dir ]; then \
+	      (cd $$dir; $(MAKE) $(FLAGS_TO_PASS) install); \
+	    else true; fi; \
+	  else true; fi; \
+	done
+
+install-crt0:
+	${INSTALL_DATA} ${CRT0} $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x
+
+install-rdimon:
+	set -e; for x in ${RDIMON_CRT0} ${RDIMON_BSP}; do ${INSTALL_DATA} $$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
+	set -e; for x in ${RDIMON_SCRIPTS}; do ${INSTALL_DATA} ${srcdir}/${objtype}$$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
+
+
+doc:
+info:
+install-info:
+clean-info:
+
+Makefile: Makefile.in config.status @host_makefile_frag_path@
+	$(SHELL) config.status
+
+config.status: configure
+	$(SHELL) config.status --recheck

libgloss/aarch64/_exit.c

@@ -0,0 +1,41 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+#include <_ansi.h>
+#include "svc.h"
+
+void _exit _PARAMS ((int));
+
+__attribute__ ((noreturn)) void
+_exit (int status)
+{
+  while (1)
+    {
+      param_block_t block[2];
+      block[0] = ADP_Stopped_ApplicationExit;
+      block[1] = status;
+      do_AngelSVC (AngelSVC_Reason_ReportException, block);
+    }
+}

libgloss/aarch64/_kill.c

@@ -0,0 +1,49 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+#include <_ansi.h>
+#include <signal.h>
+#include <errno.h>
+#include "svc.h"
+
+int _kill _PARAMS ((int, int));
+
+int
+_kill (int pid, int sig)
+{
+  param_block_t block[2];
+
+  if (pid == 0)
+    return 0;
+  if (pid != 1 && pid != -1)
+    {
+      errno = ESRCH;
+      return -1;
+    }
+
+  block[0] = ADP_Stopped_RunTimeError;
+  block[1] = sig;
+  return do_AngelSVC (AngelSVC_Reason_ReportException, block);
+}

libgloss/aarch64/aclocal.m4

@@ -0,0 +1,404 @@
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
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+
+# AM_CONDITIONAL                                            -*- Autoconf -*-
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+    test -z "am__include" && continue
+    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+    # When using ansi2knr, U may be empty or an underscore; expand it
+    U=`sed -n 's/^U = //p' < "$mf"`
+    # Find all dependency output files, they are included files with
+    # $(DEPDIR) in their names.  We invoke sed twice because it is the
+    # simplest approach to changing $(DEPDIR) to its actual value in the
+    # expansion.
+    for file in `sed -n "
+      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+      # Make sure the directory exists.
+      test -f "$dirpart/$file" && continue
+      fdir=`AS_DIRNAME(["$file"])`
+      AS_MKDIR_P([$dirpart/$fdir])
+      # echo "creating $dirpart/$file"
+      echo '# dummy' > "$dirpart/$file"
+    done
+  done
+}
+])# _AM_OUTPUT_DEPENDENCY_COMMANDS
+
+
+# AM_OUTPUT_DEPENDENCY_COMMANDS
+# -----------------------------
+# This macro should only be invoked once -- use via AC_REQUIRE.
+#
+# This code is only required when automatic dependency tracking
+# is enabled.  FIXME.  This creates each `.P' file that we will
+# need in order to bootstrap the dependency handling code.
+AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
+[AC_CONFIG_COMMANDS([depfiles],
+     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
+     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
+])
+
+# Copyright (C) 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Check to see how 'make' treats includes.	            -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2009  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check to see how make treats includes.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+	@echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+AC_MSG_CHECKING([for style of include used by $am_make])
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+  am__include=include
+  am__quote=
+  _am_result=GNU
+  ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+   echo '.include "confinc"' > confmf
+   case `$am_make -s -f confmf 2> /dev/null` in #(
+   *the\ am__doit\ target*)
+     am__include=.include
+     am__quote="\""
+     _am_result=BSD
+     ;;
+   esac
+fi
+AC_SUBST([am__include])
+AC_SUBST([am__quote])
+AC_MSG_RESULT([$_am_result])
+rm -f confinc confmf
+])
+
+# Copyright (C) 2006, 2008  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+m4_include([../acinclude.m4])

libgloss/aarch64/configure.in

@@ -0,0 +1,73 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.59)
+AC_INIT(crt0.S)
+
+if test "$srcdir" = "." ; then
+  if test "${with_target_subdir}" != "." ; then
+    libgloss_topdir="${srcdir}/${with_multisrctop}../../.."
+  else
+    libgloss_topdir="${srcdir}/${with_multisrctop}../.."
+  fi
+else
+  libgloss_topdir="${srcdir}/../.."
+fi
+AC_CONFIG_AUX_DIR($libgloss_topdir)
+
+AC_CANONICAL_SYSTEM
+AC_ARG_PROGRAM
+
+AC_PROG_INSTALL
+
+LIB_AC_PROG_CC
+AS=${AS-as}
+AC_SUBST(AS)
+AR=${AR-ar}
+AC_SUBST(AR)
+LD=${LD-ld}
+AC_SUBST(LD)
+AC_PROG_RANLIB
+LIB_AM_PROG_AS
+
+case "${target}" in
+  *-*-elf)
+	objtype=elf-
+	;;
+esac
+
+AC_SUBST(objtype)
+
+host_makefile_frag=${srcdir}/../config/default.mh
+
+dnl We have to assign the same value to other variables because autoconf
+dnl doesn't provide a mechanism to substitute a replacement keyword with
+dnl arbitrary data or pathnames.
+dnl
+host_makefile_frag_path=$host_makefile_frag
+AC_SUBST(host_makefile_frag_path)
+AC_SUBST_FILE(host_makefile_frag)
+
+# Configure cpu init plug-ins
+if test -d "${srcdir}/cpu-init"; then
+  subdirs="${subdirs} cpu-init"
+  AC_CONFIG_FILES(cpu-init/Makefile,
+  . ${libgloss_topdir}/config-ml.in,
+  srcdir=${srcdir}
+  target=${target}
+  with_multisubdir=${with_multisubdir}
+  ac_configure_args="${ac_configure_args} --enable-multilib"
+  CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+  libgloss_topdir=${libgloss_topdir}
+  )
+  AC_SUBST(subdirs)
+fi
+
+AC_CONFIG_FILES(Makefile,
+. ${libgloss_topdir}/config-ml.in,
+srcdir=${srcdir}
+target=${target}
+with_multisubdir=${with_multisubdir}
+ac_configure_args="${ac_configure_args} --enable-multilib"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+libgloss_topdir=${libgloss_topdir}
+)
+AC_OUTPUT

libgloss/aarch64/cpu-init/Makefile.in

@@ -0,0 +1,110 @@
+#  Copyright (c) 2012 ARM Ltd.  All rights reserved.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#  1. Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#  2. Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#  3. The name of the company may not be used to endorse or promote
+#     products derived from this software without specific prior written
+#     permission.
+#
+#  THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+#  IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+#  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+#  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+#  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+#  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+DESTDIR =
+VPATH = @srcdir@ @srcdir@/.. @srcdir@/../..
+srcdir = @srcdir@
+objdir = .
+srcroot = $(srcdir)/../../..
+objroot = $(objdir)/../../..
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+host_alias = @host_alias@
+target_alias = @target_alias@
+
+bindir = @bindir@
+libdir = @libdir@
+tooldir = $(exec_prefix)/$(target_alias)
+
+objtype = @objtype@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+# Multilib support variables.
+# TOP is used instead of MULTI{BUILD,SRC}TOP.
+MULTISRCTOP =
+MULTIBUILDTOP =
+MULTIDIRS =
+MULTISUBDIR =
+MULTIDO = true
+MULTICLEAN = true
+
+SHELL =	/bin/sh
+
+CC = @CC@
+
+AS = @AS@
+AR = @AR@
+LD = @LD@
+RANLIB = @RANLIB@
+
+CPU_INIT_OBJS = rdimon-aem-el3.o
+CPU_INIT_INSTALL = install-cpu-init
+
+CFLAGS		= -g
+
+# Host specific makefile fragment comes in here.
+@host_makefile_frag@
+
+.PHONY: all
+all: ${CPU_INIT_OBJS}
+
+#
+# here's where we build the test programs for each target
+#
+.PHONY: test
+test:
+
+# Static pattern rule for assembling cpu init files to object files.
+${CPU_INIT_OBJS}: %.o: %.S
+	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+
+clean mostlyclean:
+	rm -f a.out core *.i *.o *-test *.srec *.dis *.x
+
+distclean maintainer-clean realclean: clean
+	rm -f Makefile *~
+
+.PHONY: install info install-info clean-info
+install: ${CPU_INIT_INSTALL}
+
+install-cpu-init:
+	test -d $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/cpu-init || mkdir $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/cpu-init
+	set -e; for x in ${CPU_INIT_OBJS}; do ${INSTALL_DATA} $$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/cpu-init/$$x; done
+
+doc:
+info:
+install-info:
+clean-info:
+
+Makefile: Makefile.in ../config.status @host_makefile_frag_path@
+	$(SHELL) ../config.status --file cpu-init/Makefile
+
+../config.status: ../configure
+	$(SHELL) ../config.status --recheck

libgloss/aarch64/cpu-init/rdimon-aem-el3.S

@@ -0,0 +1,167 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+#include "newlib.h"
+#include "svc.h"
+
+/* ANSI concatenation macros.  */
+#define CONCAT(a, b) CONCAT2(a, b)
+#define CONCAT2(a, b) a ## b
+
+#ifdef __USER_LABEL_PREFIX__
+#define FUNCTION( name ) CONCAT (__USER_LABEL_PREFIX__, name)
+#else
+#error __USER_LABEL_PREFIX is not defined
+#endif
+
+
+	.text
+	.align 2
+_init_vectors:
+        /* Installs a table of exception vectors to catch and handle all
+           exceptions by terminating the process with a diagnostic.  */
+	adr	x0, vectors
+	msr	vbar_el3, x0
+	msr	vbar_el2, x0
+	msr	vbar_el1, x0
+	ret
+
+curr_sp0_sync:
+curr_sp0_irq:
+curr_sp0_fiq:
+curr_sp0_serror:
+curr_spx_sync:
+curr_spx_irq:
+curr_spx_fiq:
+curr_spx_serror:
+lower_a64_sync:
+lower_a64_irq:
+lower_a64_fiq:
+lower_a64_serror:
+lower_a32_sync:
+lower_a32_irq:
+lower_a32_fiq:
+lower_a32_serror:
+	mov	x0, 2
+	adr	x1, .LC3
+	mov	x2, 26
+	bl	FUNCTION (write)
+	mov	x0,  126
+	b	FUNCTION (exit)		/* Cannot return.  */
+.LC3:
+	.string "Terminated by exception.\n"
+
+	.macro	ventry	label
+	.align	7
+	b	\label
+	.endm
+
+	.align	7
+
+	/* AArch64 Exception Model -- 3.5.5 Exception Vectors.  */
+
+vectors:
+	/* Current EL with SP0.  */
+	ventry	curr_sp0_sync		/* Synchronous  */
+	ventry	curr_sp0_irq		/* Irq/vIRQ  */
+	ventry	curr_sp0_fiq		/* Fiq/vFIQ  */
+	ventry	curr_sp0_serror		/* SError/VSError  */
+
+	/* Current EL with SPx.  */
+	ventry	curr_spx_sync		/* Synchronous  */
+	ventry	curr_spx_irq		/* IRQ/vIRQ  */
+	ventry	curr_spx_fiq		/* FIQ/vFIQ  */
+	ventry	curr_spx_serror		/* SError/VSError  */
+
+	/* Lower EL using AArch64.  */
+	ventry	lower_a64_sync		/* Synchronous  */
+	ventry	lower_a64_irq		/* IRQ/vIRQ  */
+	ventry	lower_a64_fiq		/* FIQ/vFIQ  */
+	ventry	lower_a64_serror	/* SError/VSError  */
+
+	/* Lower EL using AArch32.  */
+	ventry	lower_a32_sync		/* Synchronous  */
+	ventry	lower_a32_irq		/* IRQ/vIRQ  */
+	ventry	lower_a32_fiq		/* FIQ/vFIQ  */
+	ventry	lower_a32_serror	/* SError/VSError  */
+
+
+	.text
+	.align 2
+_flat_map:
+	/* Page table setup (identity mapping).  */
+	adrp	x0, ttb
+	add	x0, x0, :lo12:ttb
+	msr	ttbr0_el3, x0
+	adr	x1, .				/* phys address */
+	bic	x1, x1, #(1 << 30) - 1		/* 1GB block alignment */
+	add	x2, x0, x1, lsr #(30 - 3)	/* offset in level 1 page
+						   table */
+	mov	x3, #0x401			/* page table attributes
+						   (AF, block) */
+	orr	x1, x1, x3
+	mov	x3, #(1 << 30)			/* 1GB block */
+	str	x1, [x2], #8			/* 1st GB */
+	add	x1, x1, x3
+	str	x1, [x2]			/* 2nd GB */
+
+	/* Setup/enable the MMU.  */
+
+	/* RES1, RES1, 40-bit PA, 39-bit VA, inner/outer cacheable WB */
+	ldr	x0, =(1 << 31) | (1 << 23) | (2 << 16) | 25 | (3 << 10) | (3 << 8)
+	msr	tcr_el3, x0
+
+	mov	x0, #0xee			/* Inner/outer cacheable WB */
+	msr	mair_el3, x0
+	isb
+
+	mrs	x0, sctlr_el3
+	ldr	x1, =0x100d			/* bits I(12) SA(3) C(2) M(0) */
+	bic	x0, x0, #2			/* clear bit A(1) */
+	orr	x0, x0, x1			/* set bits */
+
+	msr	sctlr_el3, x0
+	isb
+	ret
+
+	.data
+	.align	12
+ttb:
+	.space	4096, 0
+
+
+	.text
+	.align 2
+	.global	FUNCTION (_cpu_init_hook)
+	.type	FUNCTION (_cpu_init_hook), %function
+FUNCTION (_cpu_init_hook):
+	sub	sp, sp, #16
+	str	x30, [sp, xzr]
+	bl	_init_vectors
+	bl	_flat_map
+	ldr	x30, [sp, xzr]
+	add	sp, sp, #16
+	ret
+	.size	FUNCTION (_cpu_init_hook), .-FUNCTION (_cpu_init_hook)

libgloss/aarch64/crt0.S

@@ -0,0 +1,203 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+#include "newlib.h"
+#include "svc.h"
+
+/* ANSI concatenation macros.  */
+#define CONCAT(a, b) CONCAT2(a, b)
+#define CONCAT2(a, b) a ## b
+
+#ifdef __USER_LABEL_PREFIX__
+#define FUNCTION( name ) CONCAT (__USER_LABEL_PREFIX__, name)
+#else
+#error __USER_LABEL_PREFIX is not defined
+#endif
+
+#ifdef HAVE_INITFINI_ARRAY
+#define _init	__libc_init_array
+#define _fini	__libc_fini_array
+#endif
+
+	.text
+.macro FUNC_START name
+	.global \name
+\name:
+.endm
+
+	.align	2
+
+	FUNC_START	_mainCRTStartup
+	FUNC_START	_start
+	FUNC_START	start
+
+/* Start by setting up a stack */
+
+	/*  Issue Angel SVC to read memory info.
+
+	    ptr to ptr to 4 words to receive data.  */
+	adr	x1, .LC0
+	mov	w0, #AngelSVC_Reason_HeapInfo
+	AngelSVCAsm AngelSVC
+
+	/* Initialise the stack pointer */
+
+	/* We currently choose to use the heap_limit field rather than
+	   stack_base because the AEM validation model
+	   returns sane values in the heap fields, but 0 in the stack
+	   fields.  Note on the VE AEM model it is necessary to pass
+	   command line options to the AEM in order to define the values
+	   exposed here in the HeapInfo Angel call.  */
+	ldr	x0, .LC0		/* point at returned values */
+	ldr	x0, [x0, #8]		/* get heap_limit */
+
+	/* Ensure quad-word stack alignment.  */
+	and	x0, x0, #~15
+	mov	sp, x0
+
+	/* Setup an initial dummy frame with saved fp=0 and saved lr=0 */
+	mov	x29, 0
+	stp	x29, x29, [sp, #-16]!
+	mov	x29, sp
+
+       /* Initialize exception vector table, flatmap, etc.  */
+        bl      FUNCTION (_cpu_init_hook)
+
+	/* Zero the memory in the .bss section.  */
+	ldr	x0, .LC1		/* First arg: start of memory block */
+	mov	w1, #0			/* Second arg: fill value */
+	ldr	x2, .LC2
+	sub	x2, x2, x0		/* Third arg: length of block */
+	bl	FUNCTION (memset)
+
+	/* Need to set up standard file handles */
+	bl	FUNCTION (initialise_monitor_handles)
+
+	/* .init and .fini sections are used to create constructors
+	   and destructors.  Here we call the _init function and arrange
+	   for _fini to be called at program exit.  */
+	ldr	x0, .Lfini
+	bl	FUNCTION (atexit)
+
+	bl	FUNCTION (_init)
+
+	/* Fetch and parse the command line.  */
+	adr	x1, .Lcmdline		/* Command line descriptor.  */
+	mov	w0, #AngelSVC_Reason_GetCmdLine
+	AngelSVCAsm AngelSVC
+	ldr	x8, .Lcmdline
+
+	mov	x0, #0		/* argc */
+	mov	x1, sp		/* argv */
+	ldr	x2, .Lenvp	/* envp */
+
+	/* Put NULL at end of argv array.  */
+	str	x0, [x1, #-8]!
+
+	/* Skip leading blanks.  */
+.Lnext: ldrb	w3, [x8], #1
+	cbz	w3, .Lendstr
+	cmp	w3, #' '
+	b.eq	.Lnext
+
+	mov	w4, #' '	/* Terminator is space.  */
+
+	/* See whether we are scanning a quoted string by checking for
+	   opening quote (" or ').  */
+	subs	w9, w3, #'\"'
+	sub	x8, x8, #1	/* Backup if no match.  */
+	ccmp	w9, #('\'' - '\"'), 0x4 /* FLG_Z */, ne
+	csel	w4, w3, w4, eq	/* Terminator = quote if match.  */
+	cinc	x8, x8, eq
+
+	/* Push arg pointer to argv, and bump argc.  */
+	str	x8, [x1, #-8]!
+	add	x0, x0, #1
+
+	/* Find end of arg string.  */
+1:	ldrb	w3, [x8], #1
+	cbz	w3, .Lendstr
+	cmp	w4, w3		/* Reached terminator?  */
+	b.ne	1b
+
+	/* Terminate the arg string with NUL char.  */
+	mov	w4, #0
+	strb	w4, [x8, #-1]
+	b	.Lnext
+
+	/* Reverse argv array.  */
+.Lendstr:
+	add	x3, x1, #0		/* sp = &argv[0] */
+	add	x4, x1, w0, uxtw #3	/* ep = &argv[argc] */
+	cmp	x4, x3
+	b.lo	2f
+1:	ldr	x5, [x4, #-8]		/* x5 = ep[-1] */
+	ldr	x6, [x3]		/* x6 = *sp */
+	str	x6, [x4, #-8]!		/* *--ep = x6 */
+	str	x5, [x3], #8		/* *sp++ = x5 */
+	cmp	x4, x3
+	b.hi	1b
+2:
+	/* Move sp to the 16B boundary below argv.  */
+	and	x4, x1, ~15
+	mov	sp, x4
+
+	bl	FUNCTION (main)
+
+	b	FUNCTION (exit)		/* Cannot return.  */
+
+/* Function initializing exception vector table, flatmap, etc.
+   Declared as weak symbol so that user can override this definition
+   by linking in their own version of the function.  */
+	.weak FUNCTION (_cpu_init_hook)
+FUNCTION (_cpu_init_hook):
+	ret
+
+	.align 3
+.LC0:
+	.dword	HeapBase
+.LC1:
+	.dword	__bss_start__
+.LC2:
+	.dword	__bss_end__
+.Lfini:
+	.dword	FUNCTION(_fini)
+.Lenvp:
+	.dword	env
+.Lcmdline:
+	.dword	CommandLine
+	.dword	255
+
+/*  Workspace for Angel calls.  */
+	.data
+	.align 3
+/*  Data returned by monitor SVC.  */
+	.global	__stack_base__
+HeapBase:	.dword	0
+HeapLimit:	.dword	0
+__stack_base__:	.dword	0
+StackLimit:	.dword	0
+env:		.dword	0	/* Dummy environment array */
+CommandLine:	.space	256,0	/*  Maximum length of 255 chars handled.  */

libgloss/aarch64/elf-rdimon.specs

@@ -0,0 +1,7 @@
+%rename lib libc
+
+*libgloss:
+-lrdimon
+
+*lib:
+--start-group %(libc) %(libgloss) --end-group

libgloss/aarch64/libcfunc.c

@@ -0,0 +1,91 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/* Support files for GNU libc.  Files in the C namespace go here.
+   Files in the system namespace (ie those that start with an underscore)
+   go in syscalls.c.
+
+   Note: These functions are in a seperate file so that OS providers can
+   overrride the system call stubs (defined in syscalls.c) without having
+   to provide libc funcitons as well.  */
+
+#include "svc.h"
+
+#include <errno.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+
+extern clock_t _clock (void);
+extern int _isatty (int);
+
+unsigned __attribute__((weak))
+alarm (unsigned seconds)
+{
+  (void) seconds;
+  return 0;
+}
+
+clock_t __attribute__((weak))
+clock (void)
+{
+  return _clock ();
+}
+
+int __attribute__((weak))
+isatty (int fildes)
+{
+  return _isatty (fildes);
+}
+
+int __attribute__((weak))
+pause (void)
+{
+  errno = ENOSYS;
+  return -1;
+}
+
+unsigned __attribute__((weak))
+sleep (unsigned seconds)
+{
+  clock_t t0 = _clock ();
+  clock_t dt = seconds * CLOCKS_PER_SEC;
+
+  while (_clock () - t0 < dt)
+    ;
+  return 0;
+}
+
+int __attribute__((weak))
+usleep (useconds_t useconds)
+{
+  clock_t t0 = _clock ();
+  clock_t dt = useconds / (1000000 / CLOCKS_PER_SEC);
+
+  while (_clock () - t0 < dt)
+    ;
+  return 0;
+}

libgloss/aarch64/svc.h

@@ -0,0 +1,75 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/* Now the SWI numbers and reason codes for RDI (Angel) monitors.  */
+#define AngelSVC			0xF000
+#define AngelSVCInsn			"hlt"
+#define AngelSVCAsm			hlt
+
+/* The reason codes:  */
+#define AngelSVC_Reason_Open		0x01
+#define AngelSVC_Reason_Close		0x02
+#define AngelSVC_Reason_WriteC		0x03
+#define AngelSVC_Reason_Write0		0x04
+#define AngelSVC_Reason_Write		0x05
+#define AngelSVC_Reason_Read		0x06
+#define AngelSVC_Reason_ReadC		0x07
+#define AngelSVC_Reason_IsTTY		0x09
+#define AngelSVC_Reason_Seek		0x0A
+#define AngelSVC_Reason_FLen		0x0C
+#define AngelSVC_Reason_TmpNam		0x0D
+#define AngelSVC_Reason_Remove		0x0E
+#define AngelSVC_Reason_Rename		0x0F
+#define AngelSVC_Reason_Clock		0x10
+#define AngelSVC_Reason_Time		0x11
+#define AngelSVC_Reason_System		0x12
+#define AngelSVC_Reason_Errno		0x13
+#define AngelSVC_Reason_GetCmdLine	0x15
+#define AngelSVC_Reason_HeapInfo	0x16
+#define AngelSVC_Reason_EnterSVC	0x17
+#define AngelSVC_Reason_ReportException 0x18
+#define AngelSVC_Reason_SyncCacheRange	0x19
+#define AngelSVC_Reason_Elapsed         0x30
+#define ADP_Stopped_ApplicationExit	((2 << 16) + 38)
+#define ADP_Stopped_RunTimeError	((2 << 16) + 35)
+
+#if defined(ARM_RDI_MONITOR) && !defined(__ASSEMBLER__)
+
+/* Type of each entry in a parameter block.  */
+typedef long long param_block_t;
+
+static inline long long
+do_AngelSVC (int reason, param_block_t * arg)
+{
+  long long value;
+  asm volatile ("mov w0, %w1; mov x1, %2; " AngelSVCInsn " %3; mov %0, x0"
+		: "=r" (value) /* Outputs */
+		: "r" (reason), "r" (arg), "n" (AngelSVC) /* Inputs */
+		: "x0", "x1", "x2", "x3", "x17", "x30", "memory", "cc"
+		  /* Clobbers x0 and x1, and lr if in supervisor mode */);
+  return value;
+}
+
+#endif

libgloss/aarch64/syscalls.c

@@ -0,0 +1,751 @@
+/* Copyright (c) 2009, 2010, 2011, 2012 ARM Ltd.  All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the company may not be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+ THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/* Support files for GNU libc.  Files in the system namespace go here.
+   Files in the C namespace (ie those that do not start with an
+   underscore) go in .c.  */
+
+#include <_ansi.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <errno.h>
+#include <reent.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include "svc.h"
+
+/* Forward prototypes.  */
+int _system _PARAMS ((const char *));
+int _rename _PARAMS ((const char *, const char *));
+int _isatty _PARAMS ((int));
+clock_t _times _PARAMS ((struct tms *));
+int _gettimeofday _PARAMS ((struct timeval *, void *));
+int _unlink _PARAMS ((const char *));
+int _link _PARAMS ((void));
+int _stat _PARAMS ((const char *, struct stat *));
+int _fstat _PARAMS ((int, struct stat *));
+int _swistat _PARAMS ((int fd, struct stat * st));
+caddr_t _sbrk _PARAMS ((int));
+int _getpid _PARAMS ((int));
+int _close _PARAMS ((int));
+clock_t _clock _PARAMS ((void));
+int _swiclose _PARAMS ((int));
+int _open _PARAMS ((const char *, int, ...));
+int _swiopen _PARAMS ((const char *, int));
+int _write _PARAMS ((int, char *, int));
+int _swiwrite _PARAMS ((int, char *, int));
+int _lseek _PARAMS ((int, int, int));
+int _swilseek _PARAMS ((int, int, int));
+int _read _PARAMS ((int, char *, int));
+int _swiread _PARAMS ((int, char *, int));
+void initialise_monitor_handles _PARAMS ((void));
+
+static int checkerror _PARAMS ((int));
+static int error _PARAMS ((int));
+static int get_errno _PARAMS ((void));
+
+/* Struct used to keep track of the file position, just so we
+   can implement fseek(fh,x,SEEK_CUR).  */
+struct fdent
+{
+  int handle;
+  int flags;
+  ino_t ino;
+  int pos;
+};
+
+#define MAX_OPEN_FILES 20
+
+/* User file descriptors (fd) are integer indexes into
+   the openfiles[] array. Error checking is done by using
+   findslot().
+
+   This openfiles array is manipulated directly by only
+   these 5 functions:
+
+	findslot() - Translate entry.
+	newslot() - Find empty entry.
+	initilise_monitor_handles() - Initialize entries.
+	_swiopen() - Initialize entry.
+	_close() - Handle stdout == stderr case.
+
+   Every other function must use findslot().  */
+
+static struct fdent openfiles[MAX_OPEN_FILES];
+
+static struct fdent *findslot _PARAMS ((int));
+static int newslot _PARAMS ((void));
+
+/* Register name faking - works in collusion with the linker.  */
+register char * stack_ptr asm ("sp");
+
+
+/* following is copied from libc/stdio/local.h to check std streams */
+extern void _EXFUN (__sinit, (struct _reent *));
+#define CHECK_INIT(ptr) \
+  do						\
+    {						\
+      if ((ptr) && !(ptr)->__sdidinit)		\
+	__sinit (ptr);				\
+    }						\
+  while (0)
+
+static int monitor_stdin;
+static int monitor_stdout;
+static int monitor_stderr;
+
+/* Return a pointer to the structure associated with
+   the user file descriptor fd. */
+static struct fdent *
+findslot (int fd)
+{
+  CHECK_INIT (_REENT);
+
+  /* User file descriptor is out of range. */
+  if ((unsigned int) fd >= MAX_OPEN_FILES)
+    return NULL;
+
+  /* User file descriptor is open? */
+  if (openfiles[fd].handle == -1)
+    return NULL;
+
+  /* Valid. */
+  return &openfiles[fd];
+}
+
+/* Return the next lowest numbered free file
+   structure, or -1 if we can't find one. */
+static int
+newslot (void)
+{
+  int i;
+
+  for (i = 0; i < MAX_OPEN_FILES; i++)
+    if (openfiles[i].handle == -1)
+      break;
+
+  if (i == MAX_OPEN_FILES)
+    return -1;
+
+  return i;
+}
+
+void
+initialise_monitor_handles (void)
+{
+  int i;
+
+  /* Open the standard file descriptors by opening the special
+   * teletype device, ":tt", read-only to obtain a descritpor for
+   * standard input and write-only to obtain a descriptor for standard
+   * output. Finally, open ":tt" in append mode to obtain a descriptor
+   * for standard error. Since this is a write mode, most kernels will
+   * probably return the same value as for standard output, but the
+   * kernel can differentiate the two using the mode flag and return a
+   * different descriptor for standard error.
+   */
+
+  param_block_t block[3];
+
+  block[0] = (param_block_t) ":tt";
+  block[2] = 3;			/* length of filename */
+  block[1] = 0;			/* mode "r" */
+  monitor_stdin = do_AngelSVC (AngelSVC_Reason_Open, block);
+
+  block[0] = (param_block_t) ":tt";
+  block[2] = 3;			/* length of filename */
+  block[1] = 4;			/* mode "w" */
+  monitor_stdout = do_AngelSVC (AngelSVC_Reason_Open, block);
+
+  block[0] = (param_block_t) ":tt";
+  block[2] = 3;			/* length of filename */
+  block[1] = 8;			/* mode "a" */
+  monitor_stderr = do_AngelSVC (AngelSVC_Reason_Open, block);
+
+  /* If we failed to open stderr, redirect to stdout. */
+  if (monitor_stderr == -1)
+    monitor_stderr = monitor_stdout;
+
+  for (i = 0; i < MAX_OPEN_FILES; i++)
+    openfiles[i].handle = -1;
+
+  openfiles[0].handle = monitor_stdin;
+  openfiles[0].flags = _FREAD;
+  openfiles[0].pos = 0;
+  openfiles[1].handle = monitor_stdout;
+  openfiles[0].flags = _FWRITE;
+  openfiles[1].pos = 0;
+  openfiles[2].handle = monitor_stderr;
+  openfiles[0].flags = _FWRITE;
+  openfiles[2].pos = 0;
+}
+
+static int
+get_errno (void)
+{
+  return do_AngelSVC (AngelSVC_Reason_Errno, NULL);
+}
+
+/* Set errno and return result. */
+static int
+error (int result)
+{
+  errno = get_errno ();
+  return result;
+}
+
+/* Check the return and set errno appropriately. */
+static int
+checkerror (int result)
+{
+  if (result == -1)
+    return error (-1);
+  return result;
+}
+
+/* fh, is a valid internal file handle.
+   ptr, is a null terminated string.
+   len, is the length in bytes to read.
+   Returns the number of bytes *not* written. */
+int
+_swiread (int fh, char *ptr, int len)
+{
+  param_block_t block[3];
+
+  block[0] = fh;
+  block[1] = (param_block_t) ptr;
+  block[2] = len;
+
+  return checkerror (do_AngelSVC (AngelSVC_Reason_Read, block));
+}
+
+/* fd, is a valid user file handle.
+   Translates the return of _swiread into
+   bytes read. */
+int
+_read (int fd, char *ptr, int len)
+{
+  int res;
+  struct fdent *pfd;
+
+  pfd = findslot (fd);
+  if (pfd == NULL)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  res = _swiread (pfd->handle, ptr, len);
+
+  if (res == -1)
+    return res;
+
+  pfd->pos += len - res;
+
+  /* res == len is not an error,
+     at least if we want feof() to work.  */
+  return len - res;
+}
+
+/* fd, is a user file descriptor. */
+int
+_swilseek (int fd, int ptr, int dir)
+{
+  int res;
+  struct fdent *pfd;
+
+  /* Valid file descriptor? */
+  pfd = findslot (fd);
+  if (pfd == NULL)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  /* Valid whence? */
+  if ((dir != SEEK_CUR) && (dir != SEEK_SET) && (dir != SEEK_END))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* Convert SEEK_CUR to SEEK_SET */
+  if (dir == SEEK_CUR)
+    {
+      ptr = pfd->pos + ptr;
+      /* The resulting file offset would be negative. */
+      if (ptr < 0)
+	{
+	  errno = EINVAL;
+	  if ((pfd->pos > 0) && (ptr > 0))
+	    errno = EOVERFLOW;
+	  return -1;
+	}
+      dir = SEEK_SET;
+    }
+
+  param_block_t block[2];
+  if (dir == SEEK_END)
+    {
+      block[0] = pfd->handle;
+      res = checkerror (do_AngelSVC (AngelSVC_Reason_FLen, block));
+      if (res == -1)
+	return -1;
+      ptr += res;
+    }
+
+  /* This code only does absolute seeks.  */
+  block[0] = pfd->handle;
+  block[1] = ptr;
+  res = checkerror (do_AngelSVC (AngelSVC_Reason_Seek, block));
+  /* At this point ptr is the current file position. */
+  if (res >= 0)
+    {
+      pfd->pos = ptr;
+      return ptr;
+    }
+  else
+    return -1;
+}
+
+_lseek (int fd, int ptr, int dir)
+{
+  return _swilseek (fd, ptr, dir);
+}
+
+/* fh, is a valid internal file handle.
+   Returns the number of bytes *not* written. */
+int
+_swiwrite (int fh, char *ptr, int len)
+{
+  param_block_t block[3];
+
+  block[0] = fh;
+  block[1] = (param_block_t) ptr;
+  block[2] = len;
+
+  return checkerror (do_AngelSVC (AngelSVC_Reason_Write, block));
+}
+
+/* fd, is a user file descriptor. */
+int
+_write (int fd, char *ptr, int len)
+{
+  int res;
+  struct fdent *pfd;
+
+  pfd = findslot (fd);
+  if (pfd == NULL)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  res = _swiwrite (pfd->handle, ptr, len);
+
+  /* Clearly an error. */
+  if (res < 0)
+    return -1;
+
+  pfd->pos += len - res;
+
+  /* We wrote 0 bytes?
+     Retrieve errno just in case. */
+  if ((len - res) == 0)
+    return error (0);
+
+  return (len - res);
+}
+
+int
+_swiopen (const char *path, int flags)
+{
+  int aflags = 0, fh;
+  param_block_t block[3];
+  static ino_t ino = 1;
+  int fd;
+
+  if (path == NULL)
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+  fd = newslot ();
+
+  if (fd == -1)
+    {
+      errno = EMFILE;
+      return -1;
+    }
+
+  /* It is an error to open a file that already exists. */
+  if ((flags & O_CREAT) && (flags & O_EXCL))
+    {
+      struct stat st;
+      int res;
+      res = _stat (path, &st);
+      if (res != -1)
+	{
+	  errno = EEXIST;
+	  return -1;
+	}
+    }
+
+  /* The flags are Unix-style, so we need to convert them. */
+#ifdef O_BINARY
+  if (flags & O_BINARY)
+    aflags |= 1;
+#endif
+
+  /* In O_RDONLY we expect aflags == 0. */
+
+  if (flags & O_RDWR)
+    aflags |= 2;
+
+  if ((flags & O_CREAT) || (flags & O_TRUNC) || (flags & O_WRONLY))
+    aflags |= 4;
+
+  if (flags & O_APPEND)
+    {
+      /* Can't ask for w AND a; means just 'a'.  */
+      aflags &= ~4;
+      aflags |= 8;
+    }
+
+  block[0] = (param_block_t) path;
+  block[2] = strlen (path);
+  block[1] = aflags;
+
+  fh = do_AngelSVC (AngelSVC_Reason_Open, block);
+
+  /* Return a user file descriptor or an error. */
+  if (fh >= 0)
+    {
+      openfiles[fd].handle = fh;
+      openfiles[fd].flags = flags + 1;
+      openfiles[fd].ino = ino++;
+      openfiles[fd].pos = 0;
+      return fd;
+    }
+  else
+    return error (fh);
+}
+
+int
+_open (const char *path, int flags, ...)
+{
+  return _swiopen (path, flags);
+}
+
+/* fh, is a valid internal file handle. */
+int
+_swiclose (int fh)
+{
+  param_block_t param[1];
+  param[0] = fh;
+  return checkerror (do_AngelSVC (AngelSVC_Reason_Close, param));
+}
+
+/* fd, is a user file descriptor. */
+int
+_close (int fd)
+{
+  int res;
+  struct fdent *pfd;
+
+  pfd = findslot (fd);
+  if (pfd == NULL)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  /* Handle stderr == stdout. */
+  if ((fd == 1 || fd == 2) && (openfiles[1].handle == openfiles[2].handle))
+    {
+      pfd->handle = -1;
+      return 0;
+    }
+
+  /* Attempt to close the handle. */
+  res = _swiclose (pfd->handle);
+
+  /* Reclaim handle? */
+  if (res == 0)
+    pfd->handle = -1;
+
+  return res;
+}
+
+int __attribute__((weak))
+_getpid (int n __attribute__ ((unused)))
+{
+  return 1;
+}
+
+caddr_t
+_sbrk (int incr)
+{
+  extern char end asm ("end");	/* Defined by the linker.  */
+  static char *heap_end;
+  char *prev_heap_end;
+
+  if (heap_end == NULL)
+    heap_end = &end;
+
+  prev_heap_end = heap_end;
+
+  if (heap_end + incr > stack_ptr)
+    {
+      /* Some of the libstdc++-v3 tests rely upon detecting
+         out of memory errors, so do not abort here.  */
+      errno = ENOMEM;
+      return (caddr_t) - 1;
+    }
+
+  heap_end += incr;
+
+  return (caddr_t) prev_heap_end;
+}
+
+int
+_swistat (int fd, struct stat *st)
+{
+  struct fdent *pfd;
+  param_block_t param[1];
+  int res;
+
+  pfd = findslot (fd);
+  if (pfd == NULL)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  param[0] = pfd->handle;
+  res = do_AngelSVC (AngelSVC_Reason_IsTTY, param);
+  if (res != 0 && res != 1)
+    return error (-1);
+
+  memset (st, 0, sizeof (*st));
+
+  if (res)
+    {
+      /* This is a tty. */
+      st->st_mode |= S_IFCHR;
+    }
+  else
+    {
+      /* This is a file, return the file length.  */
+      st->st_mode |= S_IFREG;
+      res = checkerror (do_AngelSVC (AngelSVC_Reason_FLen, param));
+      if (res == -1)
+	return -1;
+      st->st_size = res;
+      st->st_blksize = 1024;
+      st->st_blocks = (res + 1023) / 1024;
+    }
+
+  /* Deduce permissions based on mode in which file opened.  */
+  st->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
+  if (pfd->flags & _FWRITE)
+    st->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
+
+  st->st_ino = pfd->ino;
+  st->st_nlink = 1;
+  return 0;
+}
+
+int __attribute__((weak))
+_fstat (int fd, struct stat * st)
+{
+  return _swistat (fd, st);
+}
+
+int __attribute__((weak))
+_stat (const char *fname, struct stat *st)
+{
+  int fd, res;
+  /* The best we can do is try to open the file readonly.
+     If it exists, then we can guess a few things about it. */
+  if ((fd = _open (fname, O_RDONLY)) == -1)
+    return -1;
+  res = _swistat (fd, st);
+  /* Not interested in the error. */
+  _close (fd);
+  return res;
+}
+
+int __attribute__((weak))
+_link (void)
+{
+  errno = ENOSYS;
+  return -1;
+}
+
+int
+_unlink (const char *path)
+{
+  int res;
+  param_block_t block[2];
+  block[0] = (param_block_t) path;
+  block[1] = strlen (path);
+  res = do_AngelSVC (AngelSVC_Reason_Remove, block);
+  if (res == -1)
+    return error (res);
+  return 0;
+}
+
+int
+_gettimeofday (struct timeval *tp, void *tzvp)
+{
+  struct timezone *tzp = tzvp;
+  if (tp)
+    {
+      /* Ask the host for the seconds since the Unix epoch.  */
+      tp->tv_sec = do_AngelSVC (AngelSVC_Reason_Time, NULL);
+      tp->tv_usec = 0;
+    }
+
+  /* Return fixed data for the timezone.  */
+  if (tzp)
+    {
+      tzp->tz_minuteswest = 0;
+      tzp->tz_dsttime = 0;
+    }
+
+  return 0;
+}
+
+/* Return a clock that ticks at 100Hz.  */
+clock_t
+_clock (void)
+{
+  clock_t timeval;
+
+  timeval = do_AngelSVC (AngelSVC_Reason_Clock, NULL);
+  return timeval;
+}
+
+/* Return a clock that ticks at 100Hz.  */
+clock_t
+_times (struct tms * tp)
+{
+  clock_t timeval = _clock ();
+
+  if (tp)
+    {
+      tp->tms_utime = timeval;	/* user time */
+      tp->tms_stime = 0;	/* system time */
+      tp->tms_cutime = 0;	/* user time, children */
+      tp->tms_cstime = 0;	/* system time, children */
+    }
+
+  return timeval;
+};
+
+
+int
+_isatty (int fd)
+{
+  struct fdent *pfd;
+  param_block_t param[1];
+  int res;
+
+  /* Return 1 if fd is an open file descriptor referring to a terminal;
+     otherwise 0 is returned, and errno is set to indicate the error.  */
+
+  pfd = findslot (fd);
+  if (pfd == NULL)
+    {
+      errno = EBADF;
+      return 0;
+    }
+
+  param[0] = pfd->handle;
+  res = do_AngelSVC (AngelSVC_Reason_IsTTY, param);
+
+  if (res != 1)
+    return error (0);
+  return res;
+}
+
+int
+_system (const char *s)
+{
+  param_block_t block[2];
+  int e;
+
+  /* Hmmm.  The ARM debug interface specification doesn't say whether
+     SYS_SYSTEM does the right thing with a null argument, or assign any
+     meaning to its return value.  Try to do something reasonable....  */
+  if (!s)
+    return 1;			/* maybe there is a shell available? we can hope. :-P */
+  block[0] = (param_block_t) s;
+  block[1] = strlen (s);
+  e = checkerror (do_AngelSVC (AngelSVC_Reason_System, block));
+  if ((e >= 0) && (e < 256))
+    {
+      /* We have to convert e, an exit status to the encoded status of
+         the command.  To avoid hard coding the exit status, we simply
+         loop until we find the right position.  */
+      int exit_code;
+
+      for (exit_code = e; e && WEXITSTATUS (e) != exit_code; e <<= 1)
+	continue;
+    }
+  return e;
+}
+
+int
+_rename (const char *oldpath, const char *newpath)
+{
+  param_block_t block[4];
+  block[0] = (param_block_t) oldpath;
+  block[1] = strlen (oldpath);
+  block[2] = (param_block_t) newpath;
+  block[3] = strlen (newpath);
+  return checkerror (do_AngelSVC (AngelSVC_Reason_Rename, block)) ? -1 : 0;
+}
+
+/* Returns the number of elapsed target ticks since the support code
+   started execution. Returns -1 and sets errno on error.  */
+long
+__aarch64_angel_elapsed (void)
+{
+  int result;
+  param_block_t block[2];
+  result = checkerror (do_AngelSVC (AngelSVC_Reason_Elapsed, block));
+  if (result == -1)
+    return result;
+  return block[0];
+}

libgloss/configure

@@ -665,6 +665,7 @@ target_alias
 CCAS
 CCASFLAGS'
 ac_subdirs_all='doc
+aarch64
 epiphany
 i386
 m32r
@@ -2391,6 +2392,11 @@ config_testsuite=true
 config_libnosys=true
 
 case "${target}" in
+  aarch64*-*-*)
+	subdirs="$subdirs aarch64"
+
+	config_testsuite=true
+	;;
   epiphany-*-*)
 	subdirs="$subdirs epiphany"
 

libgloss/configure.in

@@ -34,6 +34,10 @@ dnl indicates whether to run configure within the libnosys subdirectory
 config_libnosys=true
 
 case "${target}" in
+  aarch64*-*-*)
+	AC_CONFIG_SUBDIRS(aarch64)
+	config_testsuite=true
+	;;
   epiphany-*-*)
 	AC_CONFIG_SUBDIRS(epiphany)
 	config_testsuite=true