rtl-host.git - Runtime Loader Development

Age	Commit message (Collapse)	Author
2013-01-23	Update the documentation	Chris Johns

2013-01-22	Documentation.	Chris Johns

2013-01-15	Fixed the layout output to give to all the needed detail.	Chris Johns

2013-01-01	Use find_in_strtab when collecting symbols. Remove debug.	Chris Johns

2012-12-31	Sort the relocation records by offset for a section.	Chris Johns

2012-12-31	Make layout offsets match image offsets. Add a better strtab search.	Chris Johns
	The offsets of sections in objects have to be computed in load order so the offsets work. For example an object could have a sections with an alignment of 4 and 16 so the 4 may align with the current load offset and the 16 is padded to align it. This is the way the image is loaded and so the layout needs to follow these rules. The strtab search needs to be better. An STL string find was finding patrial strings and causing errors on the target.
2012-12-31	Sort the relocations by offset to make the overlay work.	Chris Johns

2012-12-29	Fix managing weak symbols.	Chris Johns
	Weak symbols where not being managed correctly. The symbols table is now a class with externals and weaks as separate symtabs so the externals can be searched first then the weaks and if not found an unresolved error is raised. This was found creating a libbsdport RAP file where the drivers in the all driver table resolved to the weak symbols and so linking in nothing. Fixing the weak symbols as found in the libbsdport library triggered a new resolver bug. The object files now contain the resolver state and this is used to determine if an object file has been resolved or is currently being resolved avoiding rescursive loops with dependent object files. The resolver trace output is a little easier to read.
2012-12-24	Add the symsect offset to the section reloc.	Chris Johns

2012-12-24	Trace the reloc addend.	Chris Johns

2012-12-23	Improved section trace output.	Chris Johns
	Moved the section trace output to after the offsets have been computed and add this to the output. This allows a simple way to track the offset in an ELF section to the offset in the RAP section.
2012-12-23	Change the long opt from map to overlay.	Chris Johns

2012-12-23	Add an overlay output.	Chris Johns
	An overlay shows the hex dump of the section data with the relocation records so you can see the relationship between the relocations and the section data.
2012-12-23	Add a memory dump utility.	Chris Johns

2012-12-21	Fix the reloc symbol name.	Chris Johns

2012-12-21	Finish a dump of the RAP file. Fix expanding.	Chris Johns

2012-12-21	Set header length. Make sections public.	Chris Johns
	Set the compressed file length in the RAP header. Move the string from the outputter to the RAP file. Make the sections public by moving to the RAP header.
2012-12-21	Decompressor fixes.	Chris Johns
	Make reading compressed files more robust returning the amount of data that can be read. Also add >> operartors to get the data. Add exceptions when a read fails.
2012-12-19	Turn off the debug.	Chris Johns

2012-12-19	RAP file utility. Decompressors RAP files.	Chris Johns

2012-12-19	Decompression support added.	Chris Johns
	The compressor can now decompress LZ77 files.
2012-12-18	Fixes to load libbsdports on i386.	Chris Johns
	Numerous fixes to load the the libbsdport RAP file on the i386.
2012-12-18	Add object::get_section.	Chris Johns
	Add a method to return a section given the ELF section index. Add more trace output for debugging.
2012-12-18	Use cerr for errors and not cout.	Chris Johns

2012-12-18	Update the data out pointer.	Chris Johns
	The data pointer was not updating when looping. Fix the total stats to track the data in the buffer.
2012-12-18	Add a new trace level.	Chris Johns

2012-12-15	Const sections are not PROGBITS and ALLOC and not EXECINTR or WRITE.	Chris Johns

2012-12-15	Debug trace changes.	Chris Johns

2012-12-15	i386 related fixes	Chris Johns
	Fix the size of the section calculated in image::lay_out. It did not correctly adjust for alignment. Make the sections being written correctly align.
2012-12-13	Add the section offset to the symbol value.	Chris Johns

2012-12-12	Relocation fixes.	Chris Johns
	These changes implement a suitable relocation output in the image. The code is still not working 100% but these changes are a big improvement.
2012-12-08	Add support to demand load relocation records.	Chris Johns
	Support has been added to load relocation record on demand. The relocation records are not read when the object file is first opened and read. They are read only when being written to the output file. This save loading lots of records into memory from libraries to be thrown away. The RAP format now supports writing out relocation records.
2012-12-08	Add doxygen support.	Chris Johns

2012-12-01	The symbol string is the offset into the symbol table.	Chris Johns

2012-12-01	Remove the trace on hack.	Chris Johns

2012-12-01	RAP format up to relocation records completed.	Chris Johns
	Do not write the script into the RAP file rather just write the init and fini labels. These are appended to the string table and offsets in the string table added to the image. Fi the sizes so the sections can be correctly loaded on the target.
2012-11-29	Add support for a custom RAP file format.	Chris Johns
	The file is a header and a searies of LZ77 blocks which hold the application. The format allows for easy streaming and loading on the target without needing the rewind or seek around the file.
2012-11-29	Compress as blocks.	Chris Johns
	The LZ77 compressor works with blocks. Each block is prefixed with a header that defines the output size of the block being compressed.
2012-11-29	Remove the \0 character after the header.	Chris Johns

2012-11-29	Add the index to the section.	Chris Johns
	The index is referenced in the symbol and relocation records of ELF files therefore we need to search for them.
2012-11-29	Add access to the value and info fields of a symbols.	Chris Johns

2012-11-27	Add machine related data to allow better checking.	Chris Johns

2012-11-27	Remove size_t stream operator.	Chris Johns
	On Darwin the operator works which on CentOS and FreeBSD it is seen to be redefining the uint32_t stream operator. Too hard to provide a generic solution so just cast in the user code.
2012-11-26	Update to the latest framwork requirements.	Chris Johns

2012-11-26	Comment clean up.	Chris Johns

2012-11-26	Add RAP format support.	Chris Johns

2012-11-26	Updated to reflect the framework changes.	Chris Johns

2012-11-26	Add exit label, ELF application and Application.	Chris Johns
	Add an exit label that is called when removing an application. Change the "applicatiion" to "elf_application" and add a custom format called the RAP format for applications.
2012-11-26	Add writing from images as well as streaming operators.	Chris Johns
	Add the ability to write to the compressed stream directly from files::images. Add streaming operator support which is always in a standard byte format in the output image.
2012-11-26	No archive begin/end on symbols load, image initialise fix, add sections.	Chris Johns
	Remove archive_begin/archive_end calls when loading symbols. The symbols reference object files and they may reference archive and so the archives need to be open and available. The archive begin/end must be handled at a higher level in the program. Fixed image initialisation where some constructors did not initialise all class variables. Add section support to the rld::files namespace. This allows section information to be added to an object file without the ELF file needing to available therefore removing the need for object file remaining open all the time. These sections are a copy of the information and can be copied and moved as needed. This is used to make layouts.