2001-10-31 David Howells <dhowells@redhat.com>
* syscall.h: Added SYS_times, SYS_gettimeofday, SYS_link values.
* mn10300/times.c: Renamed "times" to "_times" so that it can be
referenced by newlib.
* mn10300/cygmon.c: New file.
* mn10300/crt0_redboot.S: Ditto.
* mn10300/crt0_cygmon.S: Ditto.
* mn10300/Makefile.in: Added RedBoot and Cygmon support.
* mn10300/configure.in: Changed to allow for future
evaluation boards to be added.
* mn10300/configure: Regenerated.
This commit is contained in:
Jeff Johnston
parent
747e577331
commit
75241b15db
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@ -1,3 +1,16 @@
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2001-10-31 David Howells <dhowells@redhat.com>
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* syscall.h: Added SYS_times, SYS_gettimeofday, SYS_link values.
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* mn10300/times.c: Renamed "times" to "_times" so that it can be
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referenced by newlib.
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* mn10300/cygmon.c: New file.
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* mn10300/crt0_redboot.S: Ditto.
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* mn10300/crt0_cygmon.S: Ditto.
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* mn10300/Makefile.in: Added RedBoot and Cygmon support.
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* mn10300/configure.in: Changed to allow for future
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evaluation boards to be added.
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* mn10300/configure: Regenerated.
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2001-10-17 Michael Meissner <meissner@redhat.com>
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* regs.S (K0BASE_ADDR,K1BASE_ADDR): Define as addresses to
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@ -1,4 +1,4 @@
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# Copyright (c) 1998 Cygnus Support
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# Copyright (c) 1998, 2000 Cygnus Support
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#
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# The authors hereby grant permission to use, copy, modify, distribute,
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# and license this software and its documentation for any purpose, provided
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@ -63,24 +63,26 @@ OBJCOPY = `if [ -f ${objroot}/../binutils/objcopy ] ; \
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then echo ${objroot}/../binutils/objcopy ; \
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else t='$(program_transform_name)'; echo objcopy | sed -e $$t ; fi`
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CRT0 = crt0.o
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CRT0 = crt0.o crt0_cygmon.o crt0_redboot.o
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# Generic object files common to all targets.
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GENOBJS = _exit.o access.o chmod.o close.o crt1.o \
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GENOBJS_NO_TRAP = _exit.o access.o chmod.o close.o crt1.o \
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fstat.o getpid.o isatty.o \
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kill.o lseek.o open.o read.o \
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sbrk.o stat.o time.o trap.o unlink.o utime.o write.o
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sbrk.o stat.o time.o times.o unlink.o utime.o write.o
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GENOBJS = ${GENOBJS_NO_TRAP} trap.o
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# Object files specific to particular targets.
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EVALOBJS = ${GENOBJS}
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CYGMONOBJS = cygmon.o ${GENOBJS_NO_TRAP}
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CFLAGS = -g
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GCC_LDFLAGS = `if [ -d ${objroot}/../gcc ] ; \
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then echo -L${objroot}/../gcc ; fi`
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SCRIPTS = eval sim
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BSP = libeval.a
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SCRIPTS = @script_list@
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BSP = @bsp_list@
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# Host specific makefile fragment comes in here.
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@host_makefile_frag@
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@ -100,13 +102,17 @@ libeval.a: $(EVALOBJS)
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${AR} ${ARFLAGS} $@ $(EVALOBJS)
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${RANLIB} $@
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libcygmon.a: $(CYGMONOBJS)
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${AR} ${ARFLAGS} $@ $(CYGMONOBJS)
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${RANLIB} $@
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# compile a fully linked binary. The -Wl,-T*.ld is for the linker
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# script. By using -Wl, the linker script is put on the proper place
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# in the comand line for ld, and all the symbols will get fully
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# resolved.
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test: $(CRT0) test.o
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test: ${CRT0} test.o
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${CC} $(CFLAGS_FOR_TARGET) -L${srcdir} -L${objdir} \
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test.o -o $@ $(NEWLIB_LDFLAGS) -Wl,-Teval.ld
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@echo Done...
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@ -121,7 +127,9 @@ distclean maintainer-clean realclean: clean
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.PHONY: install info install-info clean-info
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install:
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$(INSTALL_PROGRAM) $(CRT0) $(tooldir)/lib${MULTISUBDIR}/$(CRT0)
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@for crt in ${CRT0}; do\
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$(INSTALL_PROGRAM) $${crt} $(tooldir)/lib${MULTISUBDIR}/$${crt}; \
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done
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@for bsp in ${BSP}; do\
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$(INSTALL_PROGRAM) $${bsp} $(tooldir)/lib${MULTISUBDIR}; \
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done
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@ -136,7 +144,8 @@ clean-info:
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test.o: ${srcdir}/test.c
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# these are for the BSPs
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${CRT0}: ${srcdir}/crt0.S
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crt0.o: ${srcdir}/crt0.S
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crt0_cygmon.o: ${srcdir}/crt0_cygmon.S
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# target specific makefile fragment comes in here.
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@target_makefile_frag@
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@ -1,7 +1,7 @@
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#! /bin/sh
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# Guess values for system-dependent variables and create Makefiles.
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# Generated automatically using autoconf version 2.12.1
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# Generated automatically using autoconf version 2.13
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# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
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#
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# This configure script is free software; the Free Software Foundation
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@ -28,6 +28,7 @@ program_suffix=NONE
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program_transform_name=s,x,x,
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silent=
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site=
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sitefile=
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srcdir=
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target=NONE
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verbose=
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@ -142,6 +143,7 @@ Configuration:
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--help print this message
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--no-create do not create output files
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--quiet, --silent do not print \`checking...' messages
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--site-file=FILE use FILE as the site file
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--version print the version of autoconf that created configure
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Directory and file names:
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--prefix=PREFIX install architecture-independent files in PREFIX
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@ -312,6 +314,11 @@ EOF
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-site=* | --site=* | --sit=*)
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site="$ac_optarg" ;;
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-site-file | --site-file | --site-fil | --site-fi | --site-f)
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ac_prev=sitefile ;;
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-site-file=* | --site-file=* | --site-fil=* | --site-fi=* | --site-f=*)
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sitefile="$ac_optarg" ;;
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-srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
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ac_prev=srcdir ;;
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-srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
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@ -333,7 +340,7 @@ EOF
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verbose=yes ;;
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-version | --version | --versio | --versi | --vers)
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echo "configure generated by autoconf version 2.12.1"
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echo "configure generated by autoconf version 2.13"
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exit 0 ;;
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-with-* | --with-*)
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@ -477,12 +484,16 @@ fi
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srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`
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# Prefer explicitly selected file to automatically selected ones.
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if test -z "$CONFIG_SITE"; then
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if test "x$prefix" != xNONE; then
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CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
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else
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CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
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if test -z "$sitefile"; then
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if test -z "$CONFIG_SITE"; then
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if test "x$prefix" != xNONE; then
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CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
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else
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CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
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fi
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fi
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else
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CONFIG_SITE="$sitefile"
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fi
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for ac_site_file in $CONFIG_SITE; do
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if test -r "$ac_site_file"; then
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@ -503,9 +514,11 @@ ac_ext=c
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# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
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ac_cpp='$CPP $CPPFLAGS'
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ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
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ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
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ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
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cross_compiling=$ac_cv_prog_cc_cross
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ac_exeext=
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ac_objext=o
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if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
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# Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
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if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
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@ -581,7 +594,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
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fi
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echo $ac_n "checking host system type""... $ac_c" 1>&6
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echo "configure:585: checking host system type" >&5
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echo "configure:598: checking host system type" >&5
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host_alias=$host
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case "$host_alias" in
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@ -602,7 +615,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
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echo "$ac_t""$host" 1>&6
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echo $ac_n "checking target system type""... $ac_c" 1>&6
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echo "configure:606: checking target system type" >&5
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echo "configure:619: checking target system type" >&5
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target_alias=$target
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case "$target_alias" in
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@ -620,7 +633,7 @@ target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
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echo "$ac_t""$target" 1>&6
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echo $ac_n "checking build system type""... $ac_c" 1>&6
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echo "configure:624: checking build system type" >&5
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echo "configure:637: checking build system type" >&5
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build_alias=$build
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case "$build_alias" in
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@ -669,28 +682,30 @@ test "$program_transform_name" = "" && program_transform_name="s,x,x,"
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# SunOS /usr/etc/install
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# IRIX /sbin/install
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# AIX /bin/install
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# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
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# AFS /usr/afsws/bin/install, which mishandles nonexistent args
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# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
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# ./install, which can be erroneously created by make from ./install.sh.
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echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
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echo "configure:677: checking for a BSD compatible install" >&5
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echo "configure:691: checking for a BSD compatible install" >&5
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if test -z "$INSTALL"; then
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if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
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IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":"
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for ac_dir in $PATH; do
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# Account for people who put trailing slashes in PATH elements.
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case "$ac_dir/" in
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/|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
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*)
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# OSF1 and SCO ODT 3.0 have their own names for install.
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for ac_prog in ginstall installbsd scoinst install; do
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# Don't use installbsd from OSF since it installs stuff as root
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# by default.
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for ac_prog in ginstall scoinst install; do
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if test -f $ac_dir/$ac_prog; then
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if test $ac_prog = install &&
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grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
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# AIX install. It has an incompatible calling convention.
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# OSF/1 installbsd also uses dspmsg, but is usable.
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:
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else
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ac_cv_path_install="$ac_dir/$ac_prog -c"
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@ -720,6 +735,8 @@ echo "$ac_t""$INSTALL" 1>&6
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# It thinks the first close brace ends the variable substitution.
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test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
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test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
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test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
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@ -734,15 +751,16 @@ test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
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# Extract the first word of "gcc", so it can be a program name with args.
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set dummy gcc; ac_word=$2
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echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
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echo "configure:738: checking for $ac_word" >&5
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echo "configure:755: checking for $ac_word" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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if test -n "$CC"; then
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ac_cv_prog_CC="$CC" # Let the user override the test.
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else
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
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for ac_dir in $PATH; do
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
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ac_dummy="$PATH"
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for ac_dir in $ac_dummy; do
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test -z "$ac_dir" && ac_dir=.
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if test -f $ac_dir/$ac_word; then
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ac_cv_prog_CC="gcc"
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# Extract the first word of "cc", so it can be a program name with args.
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set dummy cc; ac_word=$2
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echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
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echo "configure:767: checking for $ac_word" >&5
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echo "configure:785: checking for $ac_word" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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if test -n "$CC"; then
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ac_cv_prog_CC="$CC" # Let the user override the test.
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else
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
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ac_prog_rejected=no
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for ac_dir in $PATH; do
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ac_dummy="$PATH"
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for ac_dir in $ac_dummy; do
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test -z "$ac_dir" && ac_dir=.
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if test -f $ac_dir/$ac_word; then
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if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
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@ -811,7 +830,7 @@ fi
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fi
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echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
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echo "configure:815: checking whether we are using GNU C" >&5
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echo "configure:834: checking whether we are using GNU C" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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@ -820,7 +839,7 @@ else
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yes;
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#endif
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EOF
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if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:824: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
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if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:843: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
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ac_cv_prog_gcc=yes
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else
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ac_cv_prog_gcc=no
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS=
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echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
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echo "configure:839: checking whether ${CC-cc} accepts -g" >&5
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echo "configure:858: checking whether ${CC-cc} accepts -g" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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# Extract the first word of "ranlib", so it can be a program name with args.
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set dummy ranlib; ac_word=$2
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echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
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echo "configure:875: checking for $ac_word" >&5
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echo "configure:894: checking for $ac_word" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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if test -n "$RANLIB"; then
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ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
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else
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
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for ac_dir in $PATH; do
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
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ac_dummy="$PATH"
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for ac_dir in $ac_dummy; do
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test -z "$ac_dir" && ac_dir=.
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if test -f $ac_dir/$ac_word; then
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ac_cv_prog_RANLIB="ranlib"
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case "${target}" in
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*)
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part_specific_obj=vr4300.o
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script_list="eval sim"
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bsp_list="libeval.a"
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;;
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esac
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trap '' 1 2 15
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cat > confcache <<\EOF
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# This file is a shell script that caches the results of configure
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# Ultrix sh set writes to stderr and can't be redirected directly,
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# and sets the high bit in the cache file unless we assign to the vars.
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(set) 2>&1 |
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case `(ac_space=' '; set) 2>&1 | grep ac_space` in
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case `(ac_space=' '; set | grep ac_space) 2>&1` in
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*ac_space=\ *)
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# `set' does not quote correctly, so add quotes (double-quote substitution
|
||||
# turns \\\\ into \\, and sed turns \\ into \).
|
||||
|
|
@ -1017,7 +1041,7 @@ do
|
|||
echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
|
||||
exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
|
||||
-version | --version | --versio | --versi | --vers | --ver | --ve | --v)
|
||||
echo "$CONFIG_STATUS generated by autoconf version 2.12.1"
|
||||
echo "$CONFIG_STATUS generated by autoconf version 2.13"
|
||||
exit 0 ;;
|
||||
-help | --help | --hel | --he | --h)
|
||||
echo "\$ac_cs_usage"; exit 0 ;;
|
||||
|
|
@ -1041,6 +1065,7 @@ s%@SHELL@%$SHELL%g
|
|||
s%@CFLAGS@%$CFLAGS%g
|
||||
s%@CPPFLAGS@%$CPPFLAGS%g
|
||||
s%@CXXFLAGS@%$CXXFLAGS%g
|
||||
s%@FFLAGS@%$FFLAGS%g
|
||||
s%@DEFS@%$DEFS%g
|
||||
s%@LDFLAGS@%$LDFLAGS%g
|
||||
s%@LIBS@%$LIBS%g
|
||||
|
|
@ -1075,6 +1100,7 @@ s%@build_cpu@%$build_cpu%g
|
|||
s%@build_vendor@%$build_vendor%g
|
||||
s%@build_os@%$build_os%g
|
||||
s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g
|
||||
s%@INSTALL_SCRIPT@%$INSTALL_SCRIPT%g
|
||||
s%@INSTALL_DATA@%$INSTALL_DATA%g
|
||||
s%@CC@%$CC%g
|
||||
s%@AS@%$AS%g
|
||||
|
|
@ -1088,6 +1114,8 @@ s%@target_makefile_frag_path@%$target_makefile_frag_path%g
|
|||
/@target_makefile_frag@/r $target_makefile_frag
|
||||
s%@target_makefile_frag@%%g
|
||||
s%@part_specific_obj@%$part_specific_obj%g
|
||||
s%@script_list@%$script_list%g
|
||||
s%@bsp_list@%$bsp_list%g
|
||||
|
||||
CEOF
|
||||
EOF
|
||||
|
|
@ -1096,7 +1124,7 @@ cat >> $CONFIG_STATUS <<\EOF
|
|||
|
||||
# Split the substitutions into bite-sized pieces for seds with
|
||||
# small command number limits, like on Digital OSF/1 and HP-UX.
|
||||
ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script.
|
||||
ac_max_sed_cmds=60 # Maximum number of lines to put in a sed script.
|
||||
ac_file=1 # Number of current file.
|
||||
ac_beg=1 # First line for current file.
|
||||
ac_end=$ac_max_sed_cmds # Line after last line for current file.
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
# Copyright (c) 1995, 1996 Cygnus Support
|
||||
# Copyright (c) 1995, 1996, 2000 Cygnus Support
|
||||
#
|
||||
# The authors hereby grant permission to use, copy, modify, distribute,
|
||||
# and license this software and its documentation for any purpose, provided
|
||||
|
|
@ -85,6 +85,8 @@ AC_PROG_RANLIB
|
|||
case "${target}" in
|
||||
*)
|
||||
part_specific_obj=vr4300.o
|
||||
script_list="eval sim"
|
||||
bsp_list="libeval.a"
|
||||
;;
|
||||
esac
|
||||
|
||||
|
|
@ -102,6 +104,8 @@ target_makefile_frag_path=$target_makefile_frag
|
|||
AC_SUBST(target_makefile_frag_path)
|
||||
AC_SUBST_FILE(target_makefile_frag)
|
||||
AC_SUBST(part_specific_obj)
|
||||
AC_SUBST(script_list)
|
||||
AC_SUBST(bsp_list)
|
||||
|
||||
AC_OUTPUT(Makefile,
|
||||
. ${libgloss_topdir}/config-ml.in,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,95 @@
|
|||
/*
|
||||
* crt0_cygmon.S -- Minimal startup file for MN10300 targets running Cygmon.
|
||||
*
|
||||
* Copyright (c) 1995, 1996, 1997, 2000 Red Hat, Inc.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file contains the minimal startup code necessary.
|
||||
* This will not do any hardware initialization. It is assumed that we are talking to Cygmon
|
||||
* and therefore the hardware will be initialized properly.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Set up some room for a stack. We just grab a chunk of memory.
|
||||
*/
|
||||
#define STACK_SIZE 0x4000
|
||||
#define GLOBAL_SIZE 0x2000
|
||||
|
||||
#define STARTUP_STACK_SIZE 0x0100
|
||||
|
||||
.comm __memsize, 12
|
||||
.comm __lstack, STARTUP_STACK_SIZE
|
||||
.comm __stackbase,4
|
||||
|
||||
.section .text
|
||||
.global _start
|
||||
_start:
|
||||
/*
|
||||
* Setup a small stack so we can run some C code,
|
||||
* and get the usable memory size.
|
||||
*/
|
||||
mov __lstack,a0
|
||||
add STARTUP_STACK_SIZE-4,a0
|
||||
mov a0,sp
|
||||
|
||||
/*
|
||||
* zero out the bss section.
|
||||
*/
|
||||
.global __memsize
|
||||
.global _get_mem_info
|
||||
zerobss:
|
||||
mov __bss_start, a0 # These variables are defined in the linker script
|
||||
mov _end, a1
|
||||
|
||||
cmp a0, a1 # If no bss, then do nothing
|
||||
beq 7f
|
||||
|
||||
clr d0
|
||||
3:
|
||||
movbu d0,(a0) # Clear a byte and bump pointer
|
||||
inc a0
|
||||
cmp a0, a1
|
||||
bne 3b
|
||||
|
||||
7:
|
||||
/*
|
||||
* Setup the stack pointer --
|
||||
* get_mem_info returns the top of memory, so just use that In
|
||||
* addition, we must subtract 24 bytes for the 3 8 byte
|
||||
* arguments to main, in case main wants to write them back to
|
||||
* the stack. The caller is supposed to allocate stack space
|
||||
* for parameters in registers in the old MIPS ABIs. We must
|
||||
* do this even though we aren't passing arguments, because
|
||||
* main might be declared to have them.
|
||||
* Some ports need a larger alignment for the stack, so we
|
||||
* subtract 32, which satisifes the stack for the arguments and
|
||||
* keeps the stack pointer better aligned.
|
||||
*/
|
||||
mov __memsize, d0
|
||||
call _get_mem_info,[],0
|
||||
|
||||
sub 32, a0
|
||||
mov a0, sp
|
||||
|
||||
mov __stackbase, a1
|
||||
mov a0, (a1) # keep this for future ref
|
||||
|
||||
call ___main,[],0 # Call __main to run ctors/dtors
|
||||
clr d0
|
||||
clr d1
|
||||
mov d0, (4,sp)
|
||||
call _main,[],0 # Call main program
|
||||
call _exit,[],0
|
||||
|
||||
/* EOF crt0_cygmon.S */
|
||||
|
|
@ -0,0 +1,97 @@
|
|||
/*
|
||||
* crt0_redboot.S -- Minimal startup file for MN10300 targets running Redboot.
|
||||
*
|
||||
* Copyright (c) 2001 Red Hat, Inc.
|
||||
* Derived from crt0_cygmon.S - Copyright (c) 1995, 1996, 1997, 2000 Red Hat, Inc.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file contains the minimal startup code necessary.
|
||||
* This will not do any hardware initialization. It is assumed that we are talking to Redboot
|
||||
* and therefore the hardware will be initialized properly.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Set up some room for a stack. We just grab a chunk of memory.
|
||||
*/
|
||||
#define STACK_SIZE 0x4000
|
||||
#define GLOBAL_SIZE 0x2000
|
||||
|
||||
#define STARTUP_STACK_SIZE 0x0100
|
||||
|
||||
.comm __memsize, 12
|
||||
.comm __lstack, STARTUP_STACK_SIZE
|
||||
.comm __stackbase,4
|
||||
|
||||
.section .text
|
||||
.global _start
|
||||
_start:
|
||||
/*
|
||||
* Setup a small stack so we can run some C code,
|
||||
* and get the usable memory size.
|
||||
*/
|
||||
mov __lstack,a0
|
||||
add STARTUP_STACK_SIZE-4,a0
|
||||
mov a0,sp
|
||||
|
||||
/*
|
||||
* zero out the bss section.
|
||||
*/
|
||||
.global __memsize
|
||||
.global _get_mem_info
|
||||
zerobss:
|
||||
mov __bss_start, a0 # These variables are defined in the linker script
|
||||
mov _end, a1
|
||||
|
||||
cmp a0, a1 # If no bss, then do nothing
|
||||
beq 7f
|
||||
|
||||
clr d0
|
||||
3:
|
||||
movbu d0,(a0) # Clear a byte and bump pointer
|
||||
inc a0
|
||||
cmp a0, a1
|
||||
bne 3b
|
||||
|
||||
7:
|
||||
/*
|
||||
* Setup the stack pointer --
|
||||
* get_mem_info returns the top of memory, so just use that In
|
||||
* addition, we must subtract 24 bytes for the 3 8 byte
|
||||
* arguments to main, in case main wants to write them back to
|
||||
* the stack. The caller is supposed to allocate stack space
|
||||
* for parameters in registers in the old MIPS ABIs. We must
|
||||
* do this even though we aren't passing arguments, because
|
||||
* main might be declared to have them.
|
||||
* Some ports need a larger alignment for the stack, so we
|
||||
* subtract 32, which satisifes the stack for the arguments and
|
||||
* keeps the stack pointer better aligned.
|
||||
*/
|
||||
mov __memsize, d0
|
||||
call _get_mem_info,[],0
|
||||
|
||||
sub 32, a0
|
||||
mov a0, sp
|
||||
|
||||
mov __stackbase, a1
|
||||
mov a0, (a1) # keep this for future ref
|
||||
|
||||
call ___main,[],0 # Call __main to run ctors/dtors
|
||||
clr d0
|
||||
clr d1
|
||||
mov d0, (4,sp)
|
||||
or 0x0800,psw # Enable interrupts
|
||||
call _main,[],0 # Call main program
|
||||
call _exit,[],0
|
||||
|
||||
/* EOF crt0_redboot.S */
|
||||
|
|
@ -0,0 +1,73 @@
|
|||
/* cygmon.c -- Glue code for linking apps to run on top of Cygmon.
|
||||
*
|
||||
* Copyright (c) 1998, 1999, 2000, 2001 Red Hat, Inc.
|
||||
*
|
||||
* The authors hereby grant permission to use, copy, modify, distribute,
|
||||
* and license this software and its documentation for any purpose, provided
|
||||
* that existing copyright notices are retained in all copies and that this
|
||||
* notice is included verbatim in any distributions. No written agreement,
|
||||
* license, or royalty fee is required for any of the authorized uses.
|
||||
* Modifications to this software may be copyrighted by their authors
|
||||
* and need not follow the licensing terms described here, provided that
|
||||
* the new terms are clearly indicated on the first page of each file where
|
||||
* they apply.
|
||||
*/
|
||||
|
||||
#include <errno.h>
|
||||
|
||||
// These need to be kept in sync with the definitions in Cygmon.
|
||||
#define SYS_meminfo 1001
|
||||
#include "syscall.h"
|
||||
|
||||
/* Structure filled in by get_mem_info. Only the size field is
|
||||
actually used (by sbrk), so the others aren't even filled in. */
|
||||
struct s_mem
|
||||
{
|
||||
unsigned int size;
|
||||
unsigned int icsize;
|
||||
unsigned int dcsize;
|
||||
};
|
||||
|
||||
// Perform a system call.
|
||||
// Unused parameters should be set to 0.
|
||||
int __trap0(unsigned long func, unsigned long p1, unsigned long p2, unsigned long p3)
|
||||
{
|
||||
int ret = 0;
|
||||
#ifdef __AM33__
|
||||
{
|
||||
register unsigned long d0 asm ("d0") = func;
|
||||
register unsigned long d1 asm ("d1") = p1;
|
||||
register unsigned long d2 asm ("d2") = p2;
|
||||
register unsigned long d3 asm ("d3") = p3;
|
||||
asm volatile (" syscall 0\n"
|
||||
" nop"
|
||||
: "+d" (d0) : "d" (d1), "d" (d2), "d" (d3) : "memory");
|
||||
ret = d0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (func == SYS_exit)
|
||||
{
|
||||
while (1)
|
||||
{
|
||||
asm volatile (" .byte 0xff "); // trigger a breakpoint to drop back into Cygmon
|
||||
}
|
||||
}
|
||||
|
||||
if (ret != 0)
|
||||
errno = ret;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void *
|
||||
get_mem_info (mem)
|
||||
struct s_mem *mem;
|
||||
{
|
||||
unsigned long totmem = 0, topmem = 0;
|
||||
register int numbanks;
|
||||
|
||||
numbanks = __trap0(SYS_meminfo, (unsigned long)&totmem, (unsigned long)&topmem, 0);
|
||||
mem->size = totmem;
|
||||
return (void*)topmem;
|
||||
}
|
||||
|
|
@ -6,7 +6,7 @@
|
|||
|
||||
|
||||
clock_t
|
||||
times (struct tms *buffer)
|
||||
_times (struct tms *buffer)
|
||||
{
|
||||
return TRAP0 (SYS_times, buffer, 0, 0);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -38,10 +38,12 @@
|
|||
#define SYS_argv 13
|
||||
|
||||
/* These are extras added for one reason or another. */
|
||||
#define SYS_chdir 14
|
||||
#define SYS_stat 15
|
||||
#define SYS_chmod 16
|
||||
#define SYS_utime 17
|
||||
#define SYS_time 18
|
||||
|
||||
#define SYS_chdir 14
|
||||
#define SYS_stat 15
|
||||
#define SYS_chmod 16
|
||||
#define SYS_utime 17
|
||||
#define SYS_time 18
|
||||
#define SYS_gettimeofday 19
|
||||
#define SYS_times 20
|
||||
#define SYS_link 21
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue