* spu/exit.c (libgloss_exit): Rename from this ..
(_exit): .. to this. Overhaul.
(exit): Remove.
* spu/crt0.S, spu/crti.S, spu/crtn.S: New files.
* spu/crt0.C, spu/init.c: Remove.
* spu/configure.in (AC_INIT): Check for crt0.S, not crt0.C.
* spu/configure: Regenerate.
* spu/Makefile.in (crti.o, crtn.o, crt1.o, crt2.o): New targets.
(OBJS): Remove init.o.
(CRTOBJS): New.
(OUTPUTS): Add $(CRTOBJS).
-2006-11-27 Jeff Johnston <jjohnstn@redhat.com>
+2006-12-08 Sa Liu <saliu@de.ibm.com>
+
+ * spu/exit.c (libgloss_exit): Rename from this ..
+ (_exit): .. to this. Overhaul.
+ (exit): Remove.
+ * spu/crt0.S, spu/crti.S, spu/crtn.S: New files.
+ * spu/crt0.C, spu/init.c: Remove.
+ * spu/configure.in (AC_INIT): Check for crt0.S, not crt0.C.
+ * spu/configure: Regenerate.
+ * spu/Makefile.in (crti.o, crtn.o, crt1.o, crt2.o): New targets.
+ (OBJS): Remove init.o.
+ (CRTOBJS): New.
+ (OUTPUTS): Add $(CRTOBJS).
+
+I2006-11-27 Jeff Johnston <jjohnstn@redhat.com>
* mips/crt0.S: Fix preprocessor statements from previous patch
to be ANSI.
OBJCOPY = `t='$(program_transform_name)'; echo objcopy | sed -e $$t`
# object files needed
-OBJS = syscalls.o init.o exit.o sbrk.o close.o fstat.o getpid.o isatty.o \
+OBJS = syscalls.o exit.o sbrk.o close.o fstat.o getpid.o isatty.o \
kill.o lseek.o open.o read.o unlink.o write.o stat.o
# Object files specific to particular targets.
GCC_LDFLAGS = `if [ -d ${objroot}/../gcc ] ; \
then echo -L${objroot}/../gcc ; fi`
-OUTPUTS = libgloss.a crt0.o
+CRTOBJS = crti.o crtn.o crt1.o crt2.o
+OUTPUTS = libgloss.a $(CRTOBJS)
NEWLIB_CFLAGS = `if [ -d ${objroot}/newlib ]; then echo -I${objroot}/newlib/targ-include -I${srcroot}/newlib/libc/include; fi` -ffunction-sections -fdata-sections
NEWLIB_LDFLAGS = `if [ -d ${objroot}/newlib ]; then echo -B${objroot}/newlib/ -L${objroot}/newlib/; fi`
${AR} ${ARFLAGS} $@ $(EVALOBJS)
${RANLIB} $@
+# C Runtime Library startup code.
+crti.o:
+ $(CC) $(srcdir)/crti.S -c -o crti.o
+
+crtn.o:
+ $(CC) $(srcdir)/crtn.S -c -o crtn.o
+
+crt1.o:
+ $(CC) $(srcdir)/crt0.S -c -o crt1.o
+
+crt2.o:
+ $(CC) $(srcdir)/crt0.S -D_STD_MAIN -c -o crt2.o
+
doc:
clean mostlyclean:
PACKAGE_STRING=
PACKAGE_BUGREPORT=
-ac_unique_file="crt0.c"
+ac_unique_file="crt0.S"
ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CC am__leading_dot DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE AS AR LD RANLIB ac_ct_RANLIB CCAS CCASFLAGS host_makefile_frag_path LIBOBJS LTLIBOBJS'
ac_subst_files='host_makefile_frag'
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)dnl
-AC_INIT(crt0.c)
+AC_INIT(crt0.S)
if test "$srcdir" = "." ; then
if test "${with_target_subdir}" != "." ; then
--- /dev/null
+/* (C) Copyright IBM Corp. 2005, 2006
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+ * Neither the name of IBM nor the names of its contributors may be
+used to endorse or promote products derived from this software without
+specific prior written permission.
+
+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 OWNER 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.
+*/
+
+/* crt0.S - entry function for C Runtime.
+ *
+ * With _STD_MAIN switch, the crt0.S will be compiled to crt2.o.
+ * The crt2.o sets up a C99-style interface for the SPU application's
+ * main() function, including a local copy of argv strings.
+ *
+ * The number of argument strings is passed in R3. The size and EA
+ * location of the argument vector region is passed in R4. Once the
+ * argv region is copied to the highest range of LS, and $SP is set
+ * just below it.
+ *
+ * Without _STD_MAIN, the crt0.S is compiled to crt1.o.
+ * The crt1.o prepares the entry for an SPU module. The main() function
+ * is called with different parameter list: spu_id, param and env
+ * are passed by R3, R4 and R5 respectively.
+ */
+
+#ifdef _STD_MAIN
+#define MFC_TAG_UPDATE_ALL 2
+#define MFC_GET_CMD 0x40
+#define TAGID 0
+#define TAGMASK 1
+#endif
+
+.text
+.global _start
+.type _start, @function
+
+_start:
+#ifdef _STD_MAIN
+ /*
+ * Copy the argument vector region from EA to LS. The DMA
+ * parameters are passed in R4:
+ *
+ * +-------+-------+-------+-------+
+ * R4 | LS | EA-HI | EA-LO | SIZE |
+ * +-------+-------+-------+-------+
+ * word 0 1 2 3
+ *
+ * By the end of this sequence, the prefered slot (word 0) of
+ * R4 will contain the LS offset of argv region, which also
+ * serves as the base offset for $SP.
+ */
+ wrch $MFC_LSA, $4
+ rotqbyi $4, $4, 4
+ wrch $MFC_EAH, $4
+ rotqbyi $4, $4, 4
+ wrch $MFC_EAL, $4
+ rotqbyi $4, $4, 4
+ wrch $MFC_Size, $4
+ rotqbyi $4, $4, 4
+ il $LR, TAGID
+ wrch $MFC_TagID, $LR
+
+ /* Issue MFC_GET_CMD, then wait for transfer of argument
+ * vector region to complete.
+ */
+ il $LR, MFC_GET_CMD
+ wrch $MFC_Cmd, $LR
+ il $LR, TAGMASK
+ wrch $MFC_WrTagMask, $LR
+ il $LR, MFC_TAG_UPDATE_ALL
+ wrch $MFC_WrTagUpdate, $LR
+ rdch $LR, $MFC_RdTagStat
+#endif
+
+ /* Save parameter list of main function to the non-volatile
+ * registers. spu_thread module has three parameters, while
+ * spulet only has two.
+ */
+ ori $80, $3, 0
+ ori $81, $4, 0
+#ifndef _STD_MAIN
+ ori $82, $5, 0
+#endif
+
+ /* The Link Register is initialized to NULL.
+ */
+ il $LR, 0
+
+#ifdef _STD_MAIN
+ /* For spulet, initialize stack pointer just below the argv region.
+ */
+ ai $SP,$4,-16
+#else
+ /* For spe_thread module, the stack pointer is initialized
+ * below the area where __stack points to.
+ */
+ ila $SP,__stack
+#endif
+ /* Initialize back chain to NULL.
+ */
+ stqd $LR,0($SP)
+
+ /* Allocate 2 slots for stack frame.
+ */
+ stqd $SP,-32($SP)
+ ai $SP,$SP,-32
+
+ /* Save the Link Register in Link Register Save Area.
+ */
+ stqd $LR,16($SP)
+
+ /* Calculate stack size.
+ */
+ ila $3,_end
+ sf $3,$3,$SP
+
+ /* The BE Linux ABI passes the stack size in $2, or use
+ * the default if $2 == 0.
+ */
+ rotqbyi $4,$2,12
+ ceqi $5,$4,0
+ selb $3,$4,$3,$5
+ fsmbi $4,3840
+ selb $SP,$SP,$3,$4
+
+ /* Call the _init function.
+ */
+ brsl $LR, _init
+
+ /* Call the _fini function at exit time.
+ */
+ ila $3, _fini
+ brsl $LR, atexit
+
+ ori $3,$80,0
+ ori $4,$81,0
+#ifndef _STD_MAIN
+ ori $5,$82,0
+#endif
+
+ /* Call the programs main.
+ */
+ brsl $LR, main
+
+ /* Call exit.
+ */
+ brsl $LR, exit
+
--- /dev/null
+# (C) Copyright IBM Corp. 2005, 2006
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# * Neither the name of IBM nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# 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 OWNER 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.
+#
+# This file just make a stack frame for the contents of the .fini and
+# .init sections. Users may put any desired instructions in those
+# sections.
+
+ # Note - this macro is complimented by the FUNC_END macro
+ # in crtn.S. If you change this macro you must also change
+ # that macro match.
+.macro FUNC_START
+ # Create a stack frame with two slots: LR and BC
+ # The .init and .fini section don't change the call-preserved
+ # registes, therefore no need to save them.
+ stqd $lr, 16($sp)
+ stqd $sp, -32($sp)
+ ai $sp, $sp, -32
+.endm
+
+ .file "crti.S"
+
+ .section ".init"
+ .align 2
+
+ # To make sure the address of _init is not zero, because
+ # the default linker entry point is 0.
+ nop
+
+ .global _init
+ .type _init, @function
+_init:
+ FUNC_START
+
+
+ .section ".fini"
+ .align 2
+ .global _fini
+ .type _fini, @function
+_fini:
+ FUNC_START
+
--- /dev/null
+# (C) Copyright IBM Corp. 2005, 2006
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# * Neither the name of IBM nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# 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 OWNER 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.
+#
+# This file just makes sure that the .fini and .init sections do in
+# fact return. Users may put any desired instructions in those sections.
+# This file is the last thing linked into any executable.
+
+ # Note - this macro is complimented by the FUNC_START macro
+ # in crti.S. If you change this macro you must also change
+ # that macro match.
+ #
+ # Note - we do not try any fancy optimisations of the return
+ # sequences here, it is just not worth it. Instead keep things
+ # simple. The link register is restored and then the correct
+ # function return instruction is performed.
+.macro FUNC_END
+ ai $sp, $sp, 32
+ lqd $lr, 16($sp)
+ bi $lr
+.endm
+ .file "crtn.S"
+
+ .section ".init"
+
+ FUNC_END
+
+ .section ".fini"
+
+ FUNC_END
+
+# end of crtn.S
+++ /dev/null
-/*
-(C) Copyright IBM Corp. 2005, 2006
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
-this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
- * Neither the name of IBM nor the names of its contributors may be
-used to endorse or promote products derived from this software without
-specific prior written permission.
-
-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 OWNER 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.
-
-Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
-*/
-
-void __attribute__ (( destructor )) libgloss_exit( void )
-{
- /* we don't need any cleanup on the SPE ... yet */
- /* DEBUG HERE */
-}
-
-void exit( int status )
-{
- /* handle atexit, etc here */
- _exit( status );
-}
-
+++ /dev/null
-/*
-(C) Copyright IBM Corp. 2005, 2006
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
-this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
- * Neither the name of IBM nor the names of its contributors may be
-used to endorse or promote products derived from this software without
-specific prior written permission.
-
-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 OWNER 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.
-
-Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
-*/
-
-void __attribute__ (( constructor )) libgloss_init( void )
-{
-
-}
-
git://sourceware.org / newlib-cygwin.git / commitdiff