mirror of
https://github.com/apache/nuttx.git
synced 2026-06-04 14:53:47 +08:00
Added NXFLAT a bit at a time
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1889 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -0,0 +1,85 @@
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############################################################################
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# nxflat/Makefile
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#
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# Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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-include $(TOPDIR)/Make.defs
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include libnxflat/Make.defs
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SUBDIRS = libnxflat
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ASRCS = $(LIBNXFLAT_ASRCS)
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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CSRCS = $(LIBNXFLAT_CSRCS)
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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OBJS = $(AOBJS) $(COBJS)
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BIN = libbinfmt$(LIBEXT)
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VPATH = libnxflat
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all: $(BIN)
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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$(BIN): $(OBJS)
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@( for obj in $(OBJS) ; do \
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$(call ARCHIVE, $@, $${obj}); \
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done ; )
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.depend: Makefile $(SRCS)
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@$(MKDEP) --dep-path . --dep-path libnxflat \
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$(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
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@touch $@
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depend: .depend
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clean:
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@rm -f $(BIN) *~ .*.swp
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$(call CLEAN)
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@( for dir in $(SUBDIRS); do \
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rm -f $${dir}/*~ $${dir}/.*.swp; \
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done ; )
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distclean: clean
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@rm -f Make.dep .depend
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-include Make.dep
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@@ -0,0 +1,37 @@
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############################################################################
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# nxflat/lib/Make.defs
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#
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# Copyright (C) 2009 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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LIBNXFLAT_ASRCS =
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LIBNXFLAT_CSRCS = libnxflat_load.c libnxflat_stack.c libnxflat_verify.c
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,224 @@
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/****************************************************************************
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* libnxflat/lib/nxflat_stack.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/nxflat.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxflat_adjuststacksize
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****************************************************************************/
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void nxflat_adjuststacksize(struct nxflat_loadinfo_s *load_info,
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int argc, int envc, int system_usage)
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{
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uint32 total_usage = system_usage;
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/* For argc, we will store the array (argc elements), the argc
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* value itself, plus a null pointer.
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*/
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total_usage += (argc + 2) * sizeof(uint32);
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/* For envc, we will store the array (envc elements) plus a null
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* pointer.
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*/
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total_usage += (envc + 1) * sizeof(uint32);
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/* And we will store six additional words described the memory
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* layout.
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*/
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total_usage += 6 * sizeof(uint32);
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/* Add this to the previously determined stack size */
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load_info->stack_size += total_usage;
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}
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/****************************************************************************
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* Name: nxflat_initstack
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*
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* Description:
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* When we enter the NXFLAT_ loader, it will expect to see a stack frame
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* like the following. NOTE: This logic assumes a push down stack
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* (i.e., we decrement the stack pointer to go from the "BOTTOM" to
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* the "TOP").
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*
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*
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* TOP->argc Argument count (integer)
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* argv[0...(argc-1)] Program arguments (pointers)
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* NULL Marks end of arguments
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* env[0...N] Environment variables (pointers)
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* NULL Marks end of environment variables
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* loader ispace Address of loader ISpace (NXFLAT_ header)
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* loader dspace Address of loader DSpace
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* loader dspace size Size of the allocated loader DSpace
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* program ispace Address of program ISpace (NXFLAT_ header)
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* program dspace Address of program DSpace
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* BOTTOM->program dspace size Size of the allocated program DSpace
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*
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****************************************************************************/
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uint32 nxflat_initstack(struct nxflat_loadinfo_s *prog_load_info,
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struct nxflat_loadinfo_s *lib_load_info,
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int argc, int envc, char *p)
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{
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uint32 *argv;
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uint32 *envp;
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uint32 *sp;
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char dummy;
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/* p points to the beginning of the array of arguments;
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* sp points to the "bottom" of a push down stack.
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*/
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sp = (uint32*)((-(uint32)sizeof(char*))&(uint32) p);
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/* Place program information on the stack */
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if (prog_load_info)
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{
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*sp-- = (uint32)prog_load_info->dspace_size;
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*sp-- = (uint32)prog_load_info->dspace;
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*sp-- = (uint32)prog_load_info->ispace;
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}
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else
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{
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dbg("No program load info provided\n");
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return -EINVAL;
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}
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/* Place loader information on the stack */
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if (lib_load_info)
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{
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*sp-- = (uint32)lib_load_info->dspace_size;
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*sp-- = (uint32)lib_load_info->dspace;
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*sp-- = (uint32)lib_load_info->ispace;
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}
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else
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{
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*sp-- = (uint32)0;
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*sp-- = (uint32)0;
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*sp-- = (uint32)0;
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}
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/* Allocate space on the stack for the envp array contents
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* (including space for a null terminator).
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*/
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sp -= envc+1;
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envp = sp;
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/* Allocate space on the stack for the argv array contents
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* (including space for a null terminator).
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*/
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sp -= argc+1;
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argv = sp;
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/* Put argc on the stack. sp now points to the "top" of the
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* stack as it will be received by the new task.
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*/
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*sp-- = (uint32)argc;
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/* Copy argv pointers into the stack frame (terminated with
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* a null pointer).
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*/
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prog_load_info->arg_start = (uint32)p;
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while (argc-->0)
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{
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/* Put the address of the beginning of the string */
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*argv++ = (uint32)p;
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/* Search for the end of the string */
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do
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{
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dummy = *p++;
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}
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while (dummy);
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}
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*argv = (uint32)NULL,argv;
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/* Copy envp pointers into the stack frame (terminated with
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* a null pointer).
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*/
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prog_load_info->env_start = (uint32)p;
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while (envc-->0)
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{
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/* Put the address of the beginning of the string */
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*envp++ = (uint32)p;
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/* Search for the end of the string */
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do
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{
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dummy = *p++;
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}
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while (dummy);
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}
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*envp = (uint32)NULL;
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prog_load_info->env_end = (uint32)p;
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return (uint32)sp;
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}
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@@ -0,0 +1,116 @@
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/****************************************************************************
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* nxflat/lib/nxflat_stack.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX 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
|
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* 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
|
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <string.h>
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#include <debug.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include <nuttx/nxflat.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define V_MAP (load_info->vtbl->map)
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#define V_UNMAP (load_info->vtbl->unmap)
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#define V_ALLOC (load_info->vtbl->alloc)
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#define V_FREE (load_info->vtbl->free)
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#define V_OPEN (load_info->vtbl->open)
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#define V_READ (load_info->vtbl->read)
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#define V_CLOSE (load_info->vtbl->close)
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#define XFLT_HDR_SIZE sizeof(struct nxflat_hdr_s)
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#ifndef MAX
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# define MAX(x,y) ((x) > (y) ? (x) : (y))
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#endif
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/****************************************************************************
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* Private Constant Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxflat_verifyheader
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****************************************************************************/
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int nxflat_verifyheader(const struct nxflat_hdr_s *header)
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{
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uint16 revision;
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if (!header)
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{
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dbg("NULL NXFLAT header!");
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return -ENOEXEC;
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}
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/* Check the FLT header -- magic number and revision.
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*
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* If the the magic number does not match. Just return
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* silently. This is not our binary.
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*/
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if (strncmp(header->h_magic, "NXFLAT", 4) != 0)
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{
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dbg("Unrecognized magic=\"%c%c%c%c\"",
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header->h_magic[0], header->h_magic[1],
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header->h_magic[2], header->h_magic[3]);
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return -ENOEXEC;
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}
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/* Complain a little more if the version does not match. */
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revision = ntohs(header->h_rev);
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if (revision != NXFLAT_VERSION_CURRENT)
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{
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dbg("Unsupported NXFLAT version=%d\n", revision);
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return -ENOEXEC;
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}
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return 0;
|
||||
}
|
||||
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Reference in New Issue
Block a user