diff --git a/libgloss/ChangeLog b/libgloss/ChangeLog index b1293fb4e..b0f5cd8a6 100644 --- a/libgloss/ChangeLog +++ b/libgloss/ChangeLog @@ -1,3 +1,15 @@ +2014-12-15 Stefan Wallentowitz + + * README: Add details about or1k. + * configure.in: Add or1k/or1knd + * configure: Regenerated. + * or1k/aclocal.m4: New file. + * or1k/configure: Ditto. + * or1k/Makefile.in: New file + * or1k/configure.in: New file + * or1k/crt0.S: New file + * or1k/include/or1k-asm.h: New file + 2014-12-15 Nick Hung * libgloss/nds32/_exit.S: Finish with an infinite loop in _exit. diff --git a/libgloss/README b/libgloss/README index e2a420fd9..1141841bb 100644 --- a/libgloss/README +++ b/libgloss/README @@ -7,4 +7,5 @@ mep - Toshiba Media Processor. pa - WinBond and Oki boards with a PA. mips - R3000 support. Array Tech LSI33k based RAID disk controller. lm32 - Lattice Mico32 simulator. -epiphany - Adapteva Epiphany multicore processor. \ No newline at end of file +epiphany - Adapteva Epiphany multicore processor. +or1k - OpenRISC 1000 processor. \ No newline at end of file diff --git a/libgloss/configure b/libgloss/configure index aaef57959..87cf53c70 100755 --- a/libgloss/configure +++ b/libgloss/configure @@ -705,6 +705,7 @@ arm spu tic6x iq2000 +or1k libnosys' # Initialize some variables set by options. @@ -2558,6 +2559,10 @@ case "${target}" in iq2000-*-*) subdirs="$subdirs iq2000" + ;; + or1k-*-* | or1knd-*-* ) + subdirs="$subdirs or1k" + ;; esac diff --git a/libgloss/configure.in b/libgloss/configure.in index 93cc36999..74d4fd6fe 100644 --- a/libgloss/configure.in +++ b/libgloss/configure.in @@ -159,6 +159,9 @@ case "${target}" in iq2000-*-*) AC_CONFIG_SUBDIRS([iq2000]) ;; + or1k-*-* | or1knd-*-* ) + AC_CONFIG_SUBDIRS([or1k]) + ;; esac dnl For now, don't bother configuring testsuite diff --git a/libgloss/or1k/Makefile.in b/libgloss/or1k/Makefile.in new file mode 100644 index 000000000..cf6197ae1 --- /dev/null +++ b/libgloss/or1k/Makefile.in @@ -0,0 +1,100 @@ +# Copyright (c) 1998 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. + +DESTDIR = +VPATH = @srcdir@ +srcdir = @srcdir@ +objdir = . +srcroot = $(srcdir)/../.. +objroot = $(objdir)/../.. + +prefix = @prefix@ +exec_prefix = @exec_prefix@ + +host_alias = @host_alias@ +target_alias = @target_alias@ +program_transform_name = @program_transform_name@ + +bindir = @bindir@ +libdir = @libdir@ +includedir = @includedir@ +tooldir = $(exec_prefix)/$(target_alias) + +# Multilib support variables. +# TOP is used instead of MULTI{BUILD,SRC}TOP. +MULTIDIRS = +MULTISUBDIR = +MULTIDO = true +MULTICLEAN = true + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ +INSTALL_DATA = @INSTALL_DATA@ + +SHELL = /bin/sh + +CC = @CC@ +AS = @AS@ +AR = @AR@ +LD = @LD@ +RANLIB = @RANLIB@ + +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` + +GCC_LDFLAGS = `if [ -d ${objroot}/../gcc ] ; \ + then echo -L${objroot}/../gcc ; fi` + +OUTPUTS = crt0.o + +# Host specific makefile fragment comes in here. +@host_makefile_frag@ + + +all: ${OUTPUTS} + +# +# here's where we build the library for each target +# + +doc: + +clean mostlyclean: + rm -f $(OUTPUTS) $(BOARD_LIBS) *.i *~ *.o *-test *.srec *.dis *.map *.x + +distclean maintainer-clean realclean: clean + rm -f Makefile config.status $(OUTPUTS) + +.PHONY: install info install-info clean-info +install: + @for outputs in ${OUTPUTS}; do\ + mkdir -p $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}; \ + $(INSTALL_DATA) $${outputs} $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}; \ + done + $(INSTALL_DATA) ${srcdir}/include/or1k-support.h $(DESTDIR)$(tooldir)/include/ + $(INSTALL_DATA) ${srcdir}/include/or1k-sprs.h $(DESTDIR)$(tooldir)/include/ + $(INSTALL_DATA) ${srcdir}/include/or1k-asm.h $(DESTDIR)$(tooldir)/include/ + $(INSTALL_DATA) ${srcdir}/include/or1k-nop.h $(DESTDIR)$(tooldir)/include/ + +info: +install-info: +clean-info: + +Makefile: Makefile.in config.status @host_makefile_frag_path@ + $(SHELL) config.status + +config.status: configure + $(SHELL) config.status --recheck diff --git a/libgloss/or1k/aclocal.m4 b/libgloss/or1k/aclocal.m4 new file mode 100644 index 000000000..6ba621054 --- /dev/null +++ b/libgloss/or1k/aclocal.m4 @@ -0,0 +1,409 @@ +# generated automatically by aclocal 1.11.6 -*- Autoconf -*- + +# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, +# 2005, 2006, 2007, 2008, 2009, 2010, 2011 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. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +# AM_CONDITIONAL -*- Autoconf -*- + +# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 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 9 + +# AM_CONDITIONAL(NAME, SHELL-CONDITION) +# ------------------------------------- +# Define a conditional. +AC_DEFUN([AM_CONDITIONAL], +[AC_PREREQ(2.52)dnl + ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])], + [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl +AC_SUBST([$1_TRUE])dnl +AC_SUBST([$1_FALSE])dnl +_AM_SUBST_NOTMAKE([$1_TRUE])dnl +_AM_SUBST_NOTMAKE([$1_FALSE])dnl +m4_define([_AM_COND_VALUE_$1], [$2])dnl +if $2; then + $1_TRUE= + $1_FALSE='#' +else + $1_TRUE='#' + $1_FALSE= +fi +AC_CONFIG_COMMANDS_PRE( +[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then + AC_MSG_ERROR([[conditional "$1" was never defined. +Usually this means the macro was only invoked conditionally.]]) +fi])]) + +# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009, +# 2010, 2011 Free Software Foundation, Inc. +# +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# serial 12 + +# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be +# written in clear, in which case automake, when reading aclocal.m4, +# will think it sees a *use*, and therefore will trigger all it's +# C support machinery. 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Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. 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Don't cache a + # value for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + INSTALL=$ac_install_sh + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5 +$as_echo "$INSTALL" >&6; } + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + + + +$as_echo "#define HAVE_GNU_LD 1" >>confdefs.h + + +# We always use ELF, define various useful associated things. + +$as_echo "#define HAVE_ELF 1" >>confdefs.h + + +# Standard stuff copied from libnosys. For this we'll need to an aclocal.m4 +rm -rf .tst 2>/dev/null +mkdir .tst 2>/dev/null +if test -d .tst; then + am__leading_dot=. +else + am__leading_dot=_ +fi +rmdir .tst 2>/dev/null + +DEPDIR="${am__leading_dot}deps" + +ac_config_commands="$ac_config_commands depfiles" + + +am_make=${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. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5 +$as_echo_n "checking for style of include used by $am_make... " >&6; } +am__include="#" +am__quote= +_am_result=none +# First try GNU make style include. +echo "include confinc" > confmf +# Ignore all kinds of additional output from `make'. +case `$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 + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5 +$as_echo "$_am_result" >&6; } +rm -f confinc confmf + +# Check whether --enable-dependency-tracking was given. +if test "${enable_dependency_tracking+set}" = set; then : + enableval=$enable_dependency_tracking; +fi + +if test "x$enable_dependency_tracking" != xno; then + am_depcomp="$ac_aux_dir/depcomp" + AMDEPBACKSLASH='\' + am__nodep='_no' +fi + if test "x$enable_dependency_tracking" != xno; then + AMDEP_TRUE= + AMDEP_FALSE='#' +else + AMDEP_TRUE='#' + AMDEP_FALSE= +fi + + +# Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + +depcc="$CC" am_compiler_list= + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5 +$as_echo_n "checking dependency style of $depcc... " >&6; } +if ${am_cv_CC_dependencies_compiler_type+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then + # We make a subdir and do the tests there. Otherwise we can end up + # making bogus files that we don't know about and never remove. For + # instance it was reported that on HP-UX the gcc test will end up + # making a dummy file named `D' -- because `-MD' means `put the output + # in D'. + rm -rf conftest.dir + mkdir conftest.dir + # Copy depcomp to subdir because otherwise we won't find it if we're + # using a relative directory. + cp "$am_depcomp" conftest.dir + cd conftest.dir + # We will build objects and dependencies in a subdirectory because + # it helps to detect inapplicable dependency modes. For instance + # both Tru64's cc and ICC support -MD to output dependencies as a + # side effect of compilation, but ICC will put the dependencies in + # the current directory while Tru64 will put them in the object + # directory. + mkdir sub + + am_cv_CC_dependencies_compiler_type=none + if test "$am_compiler_list" = ""; then + am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp` + fi + am__universal=false + case " $depcc " in #( + *\ -arch\ *\ -arch\ *) am__universal=true ;; + esac + + for depmode in $am_compiler_list; do + # Setup a source with many dependencies, because some compilers + # like to wrap large dependency lists on column 80 (with \), and + # we should not choose a depcomp mode which is confused by this. + # + # We need to recreate these files for each test, as the compiler may + # overwrite some of them when testing with obscure command lines. + # This happens at least with the AIX C compiler. + : > sub/conftest.c + for i in 1 2 3 4 5 6; do + echo '#include "conftst'$i'.h"' >> sub/conftest.c + # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with + # Solaris 8's {/usr,}/bin/sh. + touch sub/conftst$i.h + done + echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf + + # We check with `-c' and `-o' for the sake of the "dashmstdout" + # mode. It turns out that the SunPro C++ compiler does not properly + # handle `-M -o', and we need to detect this. Also, some Intel + # versions had trouble with output in subdirs + am__obj=sub/conftest.${OBJEXT-o} + am__minus_obj="-o $am__obj" + case $depmode in + gcc) + # This depmode causes a compiler race in universal mode. + test "$am__universal" = false || continue + ;; + nosideeffect) + # after this tag, mechanisms are not by side-effect, so they'll + # only be used when explicitly requested + if test "x$enable_dependency_tracking" = xyes; then + continue + else + break + fi + ;; + msvc7 | msvc7msys | msvisualcpp | msvcmsys) + # This compiler won't grok `-c -o', but also, the minuso test has + # not run yet. These depmodes are late enough in the game, and + # so weak that their functioning should not be impacted. + am__obj=conftest.${OBJEXT-o} + am__minus_obj= + ;; + none) break ;; + esac + if depmode=$depmode \ + source=sub/conftest.c object=$am__obj \ + depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \ + $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \ + >/dev/null 2>conftest.err && + grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 && + grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 && + grep $am__obj sub/conftest.Po > /dev/null 2>&1 && + ${MAKE-make} -s -f confmf > /dev/null 2>&1; then + # icc doesn't choke on unknown options, it will just issue warnings + # or remarks (even with -Werror). So we grep stderr for any message + # that says an option was ignored or not supported. + # When given -MP, icc 7.0 and 7.1 complain thusly: + # icc: Command line warning: ignoring option '-M'; no argument required + # The diagnosis changed in icc 8.0: + # icc: Command line remark: option '-MP' not supported + if (grep 'ignoring option' conftest.err || + grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else + am_cv_CC_dependencies_compiler_type=$depmode + break + fi + fi + done + + cd .. + rm -rf conftest.dir +else + am_cv_CC_dependencies_compiler_type=none +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5 +$as_echo "$am_cv_CC_dependencies_compiler_type" >&6; } +CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type + + if + test "x$enable_dependency_tracking" != xno \ + && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then + am__fastdepCC_TRUE= + am__fastdepCC_FALSE='#' +else + am__fastdepCC_TRUE='#' + am__fastdepCC_FALSE= +fi + + +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -z "$CC" && as_fn_error $? "no acceptable cc found in \$PATH" "$LINENO" 5 +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using GNU C" >&5 +$as_echo_n "checking whether we are using GNU C... " >&6; } +if ${ac_cv_c_compiler_gnu+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.c <&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } | egrep yes >/dev/null 2>&1; then + ac_cv_c_compiler_gnu=yes +else + ac_cv_c_compiler_gnu=no +fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5 +$as_echo "$ac_cv_c_compiler_gnu" >&6; } + +if test $ac_cv_c_compiler_gnu = yes; then + GCC=yes + ac_test_CFLAGS="${CFLAGS+set}" + ac_save_CFLAGS="$CFLAGS" + CFLAGS= + ac_test_CFLAGS=${CFLAGS+set} +ac_save_CFLAGS=$CFLAGS +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5 +$as_echo_n "checking whether $CC accepts -g... " >&6; } +if ${ac_cv_prog_cc_g+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_save_c_werror_flag=$ac_c_werror_flag + ac_c_werror_flag=yes + ac_cv_prog_cc_g=no + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_g=yes +else + CFLAGS="" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + +else + ac_c_werror_flag=$ac_save_c_werror_flag + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_g=yes +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ac_c_werror_flag=$ac_save_c_werror_flag +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5 +$as_echo "$ac_cv_prog_cc_g" >&6; } +if test "$ac_test_CFLAGS" = set; then + CFLAGS=$ac_save_CFLAGS +elif test $ac_cv_prog_cc_g = yes; then + if test "$GCC" = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-g" + fi +else + if test "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi + if test "$ac_test_CFLAGS" = set; then + CFLAGS="$ac_save_CFLAGS" + elif test $ac_cv_prog_cc_g = yes; then + CFLAGS="-g -O2" + else + CFLAGS="-O2" + fi +else + GCC= + test "${CFLAGS+set}" = set || CFLAGS="-g" +fi + +AS=${AS-as} + +AR=${AR-ar} + +LD=${LD-ld} + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args. +set dummy ${ac_tool_prefix}ranlib; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_RANLIB+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$RANLIB"; then + ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +RANLIB=$ac_cv_prog_RANLIB +if test -n "$RANLIB"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5 +$as_echo "$RANLIB" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_RANLIB"; then + ac_ct_RANLIB=$RANLIB + # Extract the first word of "ranlib", so it can be a program name with args. +set dummy ranlib; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_RANLIB+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_RANLIB"; then + ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_ac_ct_RANLIB="ranlib" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB +if test -n "$ac_ct_RANLIB"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5 +$as_echo "$ac_ct_RANLIB" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_RANLIB" = x; then + RANLIB=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + RANLIB=$ac_ct_RANLIB + fi +else + RANLIB="$ac_cv_prog_RANLIB" +fi + +# By default we simply use the C compiler to build assembly code. + +test "${CCAS+set}" = set || CCAS=$CC +test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS + + + + +host_makefile_frag=${srcdir}/../config/default.mh +target_makefile_frag=${srcdir}/../config/default.mt + +host_makefile_frag_path=$host_makefile_frag + + +target_makefile_frag_path=$target_makefile_frag + + + +ac_config_files="$ac_config_files Makefile" + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, we kill variables containing newlines. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +( + for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do + eval ac_val=\$$ac_var + case $ac_val in #( + *${as_nl}*) + case $ac_var in #( + *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;; + esac + case $ac_var in #( + _ | IFS | as_nl) ;; #( + BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #( + *) { eval $ac_var=; unset $ac_var;} ;; + esac ;; + esac + done + + (set) 2>&1 | + case $as_nl`(ac_space=' '; set) 2>&1` in #( + *${as_nl}ac_space=\ *) + # `set' does not quote correctly, so add quotes: double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \. + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; #( + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p" + ;; + esac | + sort +) | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + :end' >>confcache +if diff "$cache_file" confcache >/dev/null 2>&1; then :; else + if test -w "$cache_file"; then + if test "x$cache_file" != "x/dev/null"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +$as_echo "$as_me: updating cache $cache_file" >&6;} + if test ! -f "$cache_file" || test -h "$cache_file"; then + cat confcache >"$cache_file" + else + case $cache_file in #( + */* | ?:*) + mv -f confcache "$cache_file"$$ && + mv -f "$cache_file"$$ "$cache_file" ;; #( + *) + mv -f confcache "$cache_file" ;; + esac + fi + fi + else + { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;} + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +# +# If the first sed substitution is executed (which looks for macros that +# take arguments), then branch to the quote section. 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Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= ac_tmp= + trap 'exit_status=$? + : "${ac_tmp:=$tmp}" + { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." 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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_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$file" : 'X\(//\)[^/]' \| \ + X"$file" : 'X\(//\)$' \| \ + X"$file" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + as_dir=$dirpart/$fdir; as_fn_mkdir_p + # echo "creating $dirpart/$file" + echo '# dummy' > "$dirpart/$file" + done + done +} + ;; + "Makefile":F) . ${libgloss_topdir}/config-ml.in ;; + + esac +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi diff --git a/libgloss/or1k/configure.in b/libgloss/or1k/configure.in new file mode 100644 index 000000000..5337a4db0 --- /dev/null +++ b/libgloss/or1k/configure.in @@ -0,0 +1,81 @@ +# Makefile for libgloss/or1k + +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. */ + +# Process this file with autoconf to produce a configure script + +AC_PREREQ(2.59) +AC_INIT(libor1k,0.0.1) + +# No shared libraries allowed +if test "${enable_shared}" = "yes" ; then + echo "Shared libraries not supported for cross compiling, ignored" +fi + +# Where are the auxillary tools (confg.sub etc)? +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 + +AC_DEFINE(HAVE_GNU_LD, 1, [Using GNU ld]) + +# We always use ELF, define various useful associated things. +AC_DEFINE(HAVE_ELF, 1, [Using ELF format]) + +# Standard stuff copied from libnosys. For this we'll need to an aclocal.m4 +LIB_AC_PROG_CC +AS=${AS-as} +AC_SUBST(AS) +AR=${AR-ar} +AC_SUBST(AR) +LD=${LD-ld} +AC_SUBST(LD) +AC_PROG_RANLIB +LIB_AM_PROG_AS + +host_makefile_frag=${srcdir}/../config/default.mh +target_makefile_frag=${srcdir}/../config/default.mt + +dnl We have to assign the same value to other variables because autoconf +dnl doesn't provide a mechanism to substitute a replacement keyword with +dnl arbitrary data or pathnames. +dnl +host_makefile_frag_path=$host_makefile_frag +AC_SUBST(host_makefile_frag_path) +AC_SUBST_FILE(host_makefile_frag) +target_makefile_frag_path=$target_makefile_frag +AC_SUBST(target_makefile_frag_path) +AC_SUBST_FILE(target_makefile_frag) + +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 \ No newline at end of file diff --git a/libgloss/or1k/crt0.S b/libgloss/or1k/crt0.S new file mode 100644 index 000000000..f1753d0d7 --- /dev/null +++ b/libgloss/or1k/crt0.S @@ -0,0 +1,600 @@ +/* crt0.S -- startup file for OpenRISC 1000. + * + * Copyright (c) 2011, 2014 Authors + * + * Contributor Julius Baxter + * Contributor Stefan Wallentowitz + * + * 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. + */ + +/* -------------------------------------------------------------------------- */ +/* Coding convention: + Assembly is hard to read per se, so please follow the following coding + conventions to keep it consistent and ease reading: + * internal jump labels start with L, no identation + * assemble lines have one tab identation + * attributes (.section, .global, ..) are indented with one tab + * code is structured using tabs, i.e., use 'l.sw\t0(r1),r1' with a single + tab. libgloss assumes 8 space tab width, so that might look unstructured + with tab widths below 6. Nevertheless don't use spaces or two tabs. + * no space after comma + * use the defined macros if possible as they reduce errors + * use OR1K_INST with OR1K_DELAYED(_NOP) + * OR1K_DELAYED is multiline for better readability, the inner parts are + indented with another tab. + * COMMENT! Try to accompy every line with a meaningful comment. If possible + use pseudo code to describe the code. Also mention intentions and not only + the obvious things.. */ +/* -------------------------------------------------------------------------- */ + +#include "include/or1k-asm.h" +#include "include/or1k-sprs.h" + +/* -------------------------------------------------------------------------- */ +// Stack definitions +/* -------------------------------------------------------------------------- */ + +// Stacks +// Memory layout: +// +--------------------+ <- board_mem_base+board_mem_size/exception_stack_top +// | exception stack(s) | +// +--------------------+ <- stack_top +// | stack(s) | +// +--------------------+ <- stack_bottom +// | heap | +// +--------------------+ +// | text, data, bss.. | +// +--------------------+ + +// Reserved stack size +#define STACK_SIZE 8192 + +// Reserved stack size for exceptions (can usually be smaller than normal stack) +#define EXCEPTION_STACK_SIZE 8192 + +// Size of redzone + size of space required to store state +// This value must match that in the support library or1k_exception_handler +// function +#define EXCEPTION_STACK_FRAME (128+128) + + .extern _or1k_stack_top /* points to the next address after the stack */ + .extern _or1k_stack_bottom /* points to the last address in the stack */ + .extern _or1k_exception_stack_top + .extern _or1k_exception_stack_bottom + + .section .data + .global _or1k_stack_size /* reserved stack size */ + .global _or1k_exception_stack_size + +_or1k_stack_size: .word STACK_SIZE +_or1k_exception_stack_size: .word EXCEPTION_STACK_SIZE + +#ifdef __OR1K_MULTICORE__ + .extern _or1k_stack_core + .extern _or1k_exception_stack_core +#endif + +#define SHADOW_REG(x) (OR1K_SPR_SYS_GPR_BASE + 32 + x) + +/* -------------------------------------------------------------------------- */ +/*!Macro to handle exceptions. + + Load NPC into r3, EPCR into r4 + */ +/* -------------------------------------------------------------------------- */ + +#define GPR_BUF_OFFSET(x) (x << 2) + +#ifndef __OR1K_MULTICORE__ +#define CALL_EXCEPTION_HANDLER \ + /* store current stack pointer to address 4 */ \ + l.sw 0x4(r0),r1; \ + /* Load top of the exception stack */ \ + l.movhi r1,hi(_or1k_exception_stack_top); \ + l.ori r1,r1,lo(_or1k_exception_stack_top); \ + l.lwz r1,0(r1); \ + /* Reserve red zone and context space */ \ + l.addi r1,r1,-EXCEPTION_STACK_FRAME; \ + /* Store GPR3 in context */ \ + l.sw GPR_BUF_OFFSET(3)(r1),r3; \ + /* Load back software's stack pointer */ \ + l.lwz r3,0x4(r0); \ + /* Store this in the context */ \ + l.sw GPR_BUF_OFFSET(1)(r1),r3; \ + /* Store GPR4 in the context */ \ + l.sw GPR_BUF_OFFSET(4)(r1),r4; \ + /* Copy the current program counter as first */ \ + /* argument for the exception handler. This */ \ + /* is then used to determine the exception. */ \ + l.mfspr r3,r0,OR1K_SPR_SYS_NPC_ADDR; \ + OR1K_DELAYED( \ + /* Copy program counter of exception as */ \ + /* second argument to the exception handler */ \ + OR1K_INST(l.mfspr r4,r0,OR1K_SPR_SYS_EPCR_BASE),\ + /* Jump to exception handler. This will rfe */ \ + OR1K_INST(l.j _or1k_exception_handler) \ + ) +#else +#define CALL_EXCEPTION_HANDLER \ + /* store current stack pointer to shadow reg */ \ + l.mtspr r0,r1,SHADOW_REG(1); \ + /* store current GPR3 as we need it */ \ + l.mtspr r0,r3,SHADOW_REG(2); \ + /* Load pointer to exception stack array */ \ + l.movhi r1,hi(_or1k_exception_stack_core); \ + l.ori r1,r1,lo(_or1k_exception_stack_core); \ + l.lwz r1,0(r1); \ + /* Get core id */ \ + l.mfspr r3,r0,OR1K_SPR_SYS_COREID_ADDR; \ + /* Calculate offset in array */ \ + l.slli r3,r3,2; \ + /* Load value from array to stack pointer */ \ + l.add r1,r1,r3; \ + l.lwz r1,0(r1); \ + /* Reserve red zone and context space */ \ + l.addi r1,r1,-EXCEPTION_STACK_FRAME; \ + /* Load back software's stack pointer */ \ + l.mfspr r3,r0,SHADOW_REG(1); \ + /* Store this in the context */ \ + l.sw GPR_BUF_OFFSET(1)(r1),r3; \ + /* Load back GPR3 */ \ + l.mfspr r3,r0,SHADOW_REG(2); \ + /* Store this in the context */ \ + l.sw GPR_BUF_OFFSET(3)(r1),r3; \ + /* Store GPR4 in the context */ \ + l.sw GPR_BUF_OFFSET(4)(r1),r4; \ + /* Copy the current program counter as first */ \ + /* argument for the exception handler. This */ \ + /* is then used to determine the exception. */ \ + l.mfspr r3,r0,OR1K_SPR_SYS_NPC_ADDR; \ + OR1K_DELAYED( \ + /* Copy program counter of exception as */ \ + /* second argument to the exception handler */ \ + OR1K_INST(l.mfspr r4,r0,OR1K_SPR_SYS_EPCR_BASE),\ + /* Jump to exception handler. This will rfe */ \ + OR1K_INST(l.j _or1k_exception_handler) \ + ) +#endif + +/* -------------------------------------------------------------------------- */ +/*!Exception vectors */ +/* -------------------------------------------------------------------------- */ + .section .vectors,"ax" + + /* 0x100: RESET exception */ + .org 0x100 +_or1k_reset: + l.movhi r0,0 +#ifdef __OR1K_MULTICORE__ + // This is a hack that relies on the fact, that all cores start at the + // same time and they are similarily fast + l.sw 0x4(r0),r0 + // Similarly, we use address 8 to signal how many cores have exit'ed + l.sw 0x8(r0),r0 +#endif + l.movhi r1,0 + l.movhi r2,0 + l.movhi r3,0 + l.movhi r4,0 + l.movhi r5,0 + l.movhi r6,0 + l.movhi r7,0 + l.movhi r8,0 + l.movhi r9,0 + l.movhi r10,0 + l.movhi r11,0 + l.movhi r12,0 + l.movhi r13,0 + l.movhi r14,0 + l.movhi r15,0 + l.movhi r16,0 + l.movhi r17,0 + l.movhi r18,0 + l.movhi r19,0 + l.movhi r20,0 + l.movhi r21,0 + l.movhi r22,0 + l.movhi r23,0 + l.movhi r24,0 + l.movhi r25,0 + l.movhi r26,0 + l.movhi r27,0 + l.movhi r28,0 + l.movhi r29,0 + l.movhi r30,0 + l.movhi r31,0 + + /* Clear status register, set supervisor mode */ + l.ori r1,r0,OR1K_SPR_SYS_SR_SM_MASK + l.mtspr r0,r1,OR1K_SPR_SYS_SR_ADDR + /* Clear timer mode register*/ + l.mtspr r0,r0,OR1K_SPR_TICK_TTMR_ADDR + /* Jump to program initialisation code */ + LOAD_SYMBOL_2_GPR(r4, _or1k_start) + OR1K_DELAYED_NOP(OR1K_INST(l.jr r4)) + + .org 0x200 + CALL_EXCEPTION_HANDLER + + /* 0x300: Data Page Fault exception */ + .org 0x300 + CALL_EXCEPTION_HANDLER + + /* 0x400: Insn Page Fault exception */ + .org 0x400 + CALL_EXCEPTION_HANDLER + + /* 0x500: Timer exception */ + .org 0x500 + CALL_EXCEPTION_HANDLER + + /* 0x600: Aligment exception */ + .org 0x600 + CALL_EXCEPTION_HANDLER + + /* 0x700: Illegal insn exception */ + .org 0x700 + CALL_EXCEPTION_HANDLER + + /* 0x800: External interrupt exception */ + .org 0x800 + CALL_EXCEPTION_HANDLER + + /* 0x900: DTLB miss exception */ + .org 0x900 + CALL_EXCEPTION_HANDLER + + /* 0xa00: ITLB miss exception */ + .org 0xa00 + CALL_EXCEPTION_HANDLER + + /* 0xb00: Range exception */ + .org 0xb00 + CALL_EXCEPTION_HANDLER + + /* 0xc00: Syscall exception */ + .org 0xc00 + CALL_EXCEPTION_HANDLER + + /* 0xd00: Floating point exception */ + .org 0xd00 + CALL_EXCEPTION_HANDLER + + /* 0xe00: Trap exception */ + .org 0xe00 + CALL_EXCEPTION_HANDLER + + /* 0xf00: Reserved exceptions */ + .org 0xf00 + CALL_EXCEPTION_HANDLER + + .org 0x1000 + CALL_EXCEPTION_HANDLER + + .org 0x1100 + CALL_EXCEPTION_HANDLER + + .org 0x1200 + CALL_EXCEPTION_HANDLER + + .org 0x1300 + CALL_EXCEPTION_HANDLER + + .org 0x1400 + CALL_EXCEPTION_HANDLER + + .org 0x1500 + CALL_EXCEPTION_HANDLER + + .org 0x1600 + CALL_EXCEPTION_HANDLER + + .org 0x1700 + CALL_EXCEPTION_HANDLER + + .org 0x1800 + CALL_EXCEPTION_HANDLER + + .org 0x1900 + CALL_EXCEPTION_HANDLER + + .org 0x1a00 + CALL_EXCEPTION_HANDLER + + .org 0x1b00 + CALL_EXCEPTION_HANDLER + + .org 0x1c00 + CALL_EXCEPTION_HANDLER + + .org 0x1d00 + CALL_EXCEPTION_HANDLER + + .org 0x1e00 + CALL_EXCEPTION_HANDLER + + .org 0x1f00 + CALL_EXCEPTION_HANDLER + + /* Pad to the end */ + .org 0x1ffc + l.nop + +/* -------------------------------------------------------------------------- */ +/*!Main entry point + + This is the initialization code of the library. It performs these steps: + + * Call early board initialization: + Before anything happened, the board support may do some very early + initialization. This is at maximum some very basic stuff that would + otherwise prevent the following code from functioning. Other initialization + of peripherals etc. is done later (before calling main). + See the description below and README.board for details. + + * Initialize the stacks: + Two stacks are configured: The system stack is used by the software and + the exception stack is used when an exception occurs. We added this as + this should be flexible with respect to the usage of virtual memory. + + * Activate the caches: + If available the caches are initiliazed and activated. + + * Clear BSS: + The BSS are essentially the uninitialized C variables. They are set to 0 + by default. This is performed by this function. + + * Initialize the impure data structure: + Similarly, we need two library contexts, one for the normal software and + one that is used during exceptions. The impure data structure holds + the context information of the library. The called C function will setup + both data structures. There is furthermore a pointer to the currently + active impure data structure, which is initially set to the normal one. + + * Initialize or1k support library reentrant data structures + + * Initialize constructors: + Call the static and global constructors + + * Set up destructors to call from exit + The library will call the function set via atexit() during exit(). We set + it to call the _fini function which performs destruction. + + * Call board initialization: + The board initialization can perform board specific initializations such as + configuring peripherals etc. + + * Jump to main + Call main with argc = 0 and *argv[] = 0 + + * Call exit after main returns + Now we call exit() + + * Loop forever + We are dead. +*/ + +/* -------------------------------------------------------------------------- */ + .section .text + + /* Following externs from board-specific object passed at link time */ + .extern _or1k_board_mem_base + .extern _or1k_board_mem_size + .extern _or1k_board_uart_base + + /* The early board initialization may for example read the memory size and + set the mem_base and mem_size or do some preliminary board + initialization. As we do not have a stack at this time, the function may + not use the stack (and therefore be a or call a C function. But it can + safely use all registers. + + We define a default implementation, which allows board files in C. As + described above, this can only be used in assembly (board_*.S) as at + the early stage not stack is available. A board that needs early + initialization can overwrite the function with .global _board_init_early. + + Recommendation: Only use when you really need it! */ + .weak _or1k_board_init_early +_or1k_board_init_early: + OR1K_DELAYED_NOP(OR1K_INST(l.jr r9)) + + /* The board initialization is then called after the C library and UART + are initialized. It can then be used to configure UART or other + devices before the actual main function is called. */ + .extern _or1k_board_init + + .global _or1k_start + .type _or1k_start,@function +_or1k_start: + /* It is good to initialize and enable the caches before we do anything, + otherwise the cores will continuously access the bus during the wait + time for the boot barrier (0x4). + Fortunately or1k_cache_init does not need a stack */ + OR1K_DELAYED_NOP(OR1K_INST(l.jal _or1k_cache_init)) + +#ifdef __OR1K_MULTICORE__ + // All but core 0 have to wait + l.mfspr r1, r0, OR1K_SPR_SYS_COREID_ADDR + l.sfeq r1, r0 + OR1K_DELAYED_NOP(OR1K_INST(l.bf .Lcore0)) +.Lspin: + /* r1 will be used by the other cores to check for the boot variable + Check if r1 is still zero, core 0 will set it to 1 once it booted + As the cache is already turned on, this will not create traffic on + the bus, but the change is snooped by cache coherency then */ + l.lwz r1,0x4(r0) + l.sfeq r1, r0 + OR1K_DELAYED_NOP(OR1K_INST(l.bf .Lspin)) + + /* Initialize core i stack */ + // _or1k_stack_core is the array of stack pointers + LOAD_SYMBOL_2_GPR(r2,_or1k_stack_core) + // Load the base address + l.lwz r2,0(r2) + // Generate offset in array + l.mfspr r1,r0,OR1K_SPR_SYS_COREID_ADDR + l.slli r1,r1,2 + // Add to array base + l.add r2,r2,r1 + // Load pointer to the stack top and set frame pointer + l.lwz r1,0(r2) + l.or r2,r1,r1 + + // The slave cores are done, jump to main part + OR1K_DELAYED_NOP(OR1K_INST(l.j .Linit_done)); + + /* Only core 0 executes the initialization code */ +.Lcore0: +#endif + /* Call early board initialization */ + OR1K_DELAYED_NOP(OR1K_INST(l.jal _or1k_board_init_early)) + + /* Clear BSS */ +.Lclear_bss: + LOAD_SYMBOL_2_GPR(r3,__bss_start) + LOAD_SYMBOL_2_GPR(r4,end) + +.Lclear_bss_loop: + l.sw (0)(r3),r0 + l.sfltu r3,r4 + OR1K_DELAYED( + OR1K_INST(l.addi r3,r3,4), + OR1K_INST(l.bf .Lclear_bss_loop) + ) + + /* Initialise stack and frame pointer (set to same value) */ + LOAD_SYMBOL_2_GPR(r1,_or1k_board_mem_base) + l.lwz r1,0(r1) + LOAD_SYMBOL_2_GPR(r2,_or1k_board_mem_size) + l.lwz r2,0(r2) + l.add r1,r1,r2 + + /* Store exception stack top address */ + LOAD_SYMBOL_2_GPR(r3,_or1k_exception_stack_top) + l.sw 0(r3),r1 + + /* Store exception stack bottom address */ + // calculate bottom address + // r3 = *exception stack size + LOAD_SYMBOL_2_GPR(r3,_or1k_exception_stack_size) + // r3 = exception stack size + l.lwz r3,0(r3) +#ifdef __OR1K_MULTICORE__ + l.mfspr r4,r0,OR1K_SPR_SYS_NUMCORES_ADDR + l.mul r3,r4,r3 +#endif + // r4 = exception stack top - exception stack size = exception stack bottom + l.sub r4,r1,r3 + // r5 = *exception stack bottom + LOAD_SYMBOL_2_GPR(r5,_or1k_exception_stack_bottom) + // store + l.sw 0(r5),r4 + + // Move stack pointer accordingly + l.or r1,r0,r4 + l.or r2,r1,r1 + + /* Store stack top address */ + LOAD_SYMBOL_2_GPR(r3,_or1k_stack_top) + l.sw 0(r3),r1 + + /* Store stack bottom address */ + // calculate bottom address + // r3 = stack size + LOAD_SYMBOL_2_GPR(r3,_or1k_stack_size) + l.lwz r3,0(r3) +#ifdef __OR1K_MULTICORE__ + l.mfspr r4, r0, OR1K_SPR_SYS_NUMCORES_ADDR + l.mul r3, r4, r3 +#endif + // r4 = stack top - stack size = stack bottom + // -> stack bottom + l.sub r4,r1,r3 + // r5 = *exception stack bottom + LOAD_SYMBOL_2_GPR(r5,_or1k_stack_bottom) + // store to variable + l.sw 0(r5),r4 + + /* Reinitialize the or1k support library */ + OR1K_DELAYED_NOP(OR1K_INST(l.jal _or1k_init)) + + /* Reinitialize the reentrancy structure */ + OR1K_DELAYED_NOP(OR1K_INST(l.jal _or1k_libc_impure_init)) + + /* Call global and static constructors */ + OR1K_DELAYED_NOP(OR1K_INST(l.jal _init)) + + /* Set up destructors to be called from exit if main ever returns */ + l.movhi r3,hi(_fini) + OR1K_DELAYED( + OR1K_INST(l.ori r3,r3,lo(_fini)), + OR1K_INST(l.jal atexit) + ) + + /* Check if UART is to be initialised */ + LOAD_SYMBOL_2_GPR(r4,_or1k_board_uart_base) + l.lwz r4,0(r4) + /* Is base set? If not, no UART */ + l.sfne r4,r0 + l.bnf .Lskip_uart + l.or r3,r0,r0 + OR1K_DELAYED_NOP(OR1K_INST(l.jal _or1k_uart_init)) + +.Lskip_uart: + /* Board initialization */ + OR1K_DELAYED_NOP(OR1K_INST(l.jal _or1k_board_init)) + +#ifdef __OR1K_MULTICORE__ + // Start other cores + l.ori r3, r0, 1 + l.sw 0x4(r0), r3 +#endif + +.Linit_done: + /* Jump to main program entry point (argc = argv = envp = 0) */ + l.or r3,r0,r0 + l.or r4,r0,r0 + OR1K_DELAYED( + OR1K_INST(l.or r5,r0,r0), + OR1K_INST(l.jal main) + ) + +#ifdef __OR1K_MULTICORE__ +.incrementexit: + /* Atomically increment number of finished cores */ + l.lwa r3,0x8(r0) + l.addi r3,r3,1 + l.swa 0x8(r0),r3 + OR1K_DELAYED_NOP(OR1K_INST(l.bnf .incrementexit)); + /* Compare to number of cores in this cluster */ + l.mfspr r4,r0, OR1K_SPR_SYS_NUMCORES_ADDR + /* Compare to number of finished tasks */ + l.sfeq r3,r4 + /* Last core needs to desctruct library etc. */ + OR1K_DELAYED_NOP(OR1K_INST(l.bf .exitcorelast)); + OR1K_DELAYED( + OR1K_INST(l.addi r3,r11,0), + OR1K_INST(l.jal _exit) + ) +.exitcorelast: +#endif + /* If program exits, call exit routine */ + OR1K_DELAYED( + OR1K_INST(l.addi r3,r11,0), + OR1K_INST(l.jal exit) + ) + + /* Loop forever */ +.Lloop_forever: + OR1K_DELAYED_NOP(OR1K_INST(l.j .Lloop_forever)) + + .size _or1k_start,.-_or1k_start diff --git a/libgloss/or1k/include/or1k-asm.h b/libgloss/or1k/include/or1k-asm.h new file mode 100644 index 000000000..c218c64fe --- /dev/null +++ b/libgloss/or1k/include/or1k-asm.h @@ -0,0 +1,83 @@ +/* or1k-asm.h -- OR1K assembly helper macros + + Copyright (c) 2014 OpenRISC Project Maintainers + Copyright (C) 2012-2014 Peter Gavin + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following condition + is met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "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 THE + COPYRIGHT HOLDER OR CONTRIBUTORS 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. + + */ + +#ifndef OR1K_ASM_H +#define OR1K_ASM_H + +/* The purpose of the OR1K_INST macro is simply to protect the commas + embedded within an instruction from the C preprocessor. An entire + instruction can be safely embedded within its arguments, including + an arbitrary number of commas, and it will be reproduced + exactly. */ +#define OR1K_INST(...) __VA_ARGS__ + +/* OR1K_DELAYED takes two arguments which must be instructions. They + should be wrapped in OR1K_INST if the instructions require commas. + The second argument should be a jump or branch instruction. If we + are assembling the code in delay-slot mode (e.g., for the standard + OR1K) the first instruction will be emitted in the delay slot of + the second instruction. In no-delay-slot mode they will be emitted + in order. If we are using compat-delay mode, they will be emitted + in order, but an l.nop instruction will be emitted immediately + after. */ + +/* OR1K_DELAYED_NOP takes a single argument, which should be a + branch/jump instruction. In delay-slot or compat-delay modes, the + instruction will be emitted with an l.nop in its delay slot. In + no-delay mode, the instruction will be emitted by itself. */ + +#if defined(__OR1K_NODELAY__) + +#define OR1K_DELAYED(a, b) a; b +#define OR1K_DELAYED_NOP(a) a + +/* Go ahead and emit the .nodelay directive when in no-delay mode, so + that the flags are appropriately set in the binary. */ +.nodelay + +#elif defined(__OR1K_DELAY__) + +#define OR1K_DELAYED(a, b) b; a +#define OR1K_DELAYED_NOP(a) a; l.nop + +#elif defined(__OR1K_DELAY_COMPAT__) + +#define OR1K_DELAYED(a, b) a; b; l.nop +#define OR1K_DELAYED_NOP(a) a; l.nop + +#else + +#error One of __OR1K_NODELAY__, __OR1K_DELAY__, or __OR1K_DELAY_COMPAT__ must be defined + +#endif + +#define LOAD_SYMBOL_2_GPR(gpr,symbol) \ + .global symbol ; \ + l.movhi gpr, hi(symbol) ; \ + l.ori gpr, gpr, lo(symbol) +#endif