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* dtc: cpp co-existence: add support for #line directivesStephen Warren2012-09-281-0/+2
| | | | | | | | | | | | | | Line control directives of the following formats are supported: #line LINE "FILE" # LINE "FILE" [FLAGS] This allows dtc to consume the output of pre-processors, and to provide error messages that refer to the original filename, including taking into account any #include directives that the pre-processor may have performed. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
* dtc: Add -i option to support search pathsSimon Glass2012-03-181-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is often inconvenient to place device tree files in the same directory as their includes, or to specify the full path to include files. An example of this is in U-Boot where we have a .dtsi file for each SOC type, and this is included by the board .dts file. We need to either use a mechanism like: /include/ ARCH_CPU_DTS with sed or cpp to perform the replacement with the correct path, or we must specify the full path in the file: /include/ "../../arch/arm/dts/tegra20.dtsi" The first option is not desirable since it requires anyone compiling the file to first pre-process it. The second is not desirable since it introduces a path which is project-specific into a file which is supposed to be a hardware description. For example Linux and U-Boot are unlikely to put these include files in the same place. It is much more convenient to specify the search patch on the command line as is done with C pre-processors, for example. Introduce a -i option to add to the list of search paths used to find source and include files. We cannot use -I as it is already in use. Other suggestions welcome. Signed-off-by: Simon Glass <sjg@chromium.org>
* dtc: Implement -d option to write out a dependency fileStephen Warren2012-01-131-0/+1
| | | | | | | | This will allow callers to rebuild .dtb files when any of the /include/d .dtsi files are modified, not just the top-level .dts file. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
* Create new and use new print_error that uses printf style formatting.John Bonesio2010-10-201-0/+2
| | | | | | | | | | | | yyerror is meant to be called by the parser internal code, and it's interface is limited. Instead create and call a new error message routine that allows formatted strings to be used. yyerror uses the new routine so error formatting remains consistent. Signed-of-by: John Bonesio <bones@secretlab.ca> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* dtc: Cleanup YYLTYPE and YYLLOC_DEFAULT declarationsDavid Gibson2010-01-141-45/+27
| | | | | | | | | | | | | | | | | | | | This patch makes some small cleanups to the declaration of YYLTYPE, YYLLOC_DEFAULT and related things. - We used to use undocumented magic #defines for bison, YYLTYPE_IS_DECLARED and YYLTYPE_IS_TRIVIAL. This may not be portable across bison versions. Instead define YYLTYPE as a macro in terms of struct srcpos, as the info pages suggest. - Our kernel-derived coding style discourages typedefed structures. So use 'struct srcpos' instead of 'srcpos' throughout'. - Indent the YYLLOC_DEFAULT macro according to our coding style (it was in GNU indent style, since it was taken from the example in the bison info). Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* dtc: Cleanup line number tracking, add column number trackingDavid Gibson2010-01-141-1/+2
| | | | | | | | | | | | | | | | | | Our YYLTYPE current carries around first and last line and first and last column information. However, of these, on the first line information is actually filled in properly. Furthermore, filling in the line number information from yylineno is kind of clunky: we have to copy its value to the srcfile stack and back to handle include file positioning correctly. This patch cleans this up. We turn off flex's yylineno option and instead track the line and column number ourselves from YY_USER_ACTION. The line and column number are stored directly inside the srcfile_state structure, so it's automatically a per-file quantity. We now also fill in all the yylloc from YY_USER_ACTION. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* dtc: Simpler interface to source file managementDavid Gibson2010-01-141-15/+12
| | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up our handling of input files, particularly dts source files, but also (to an extent) other input files such as those used by /incbin/ and those used in -I dtb and -I fs modes. We eliminate the current clunky mechanism which combines search paths (which we don't actually use at present) with the open relative to current source file behaviour, which we do. Instead there's a single srcfile_relative_open() entry point for callers which opens a new input file relative to the current source file (which the srcpos code tracks internally). It doesn't currently do search paths, but we can add that later without messing with the callers, by drawing the search path from a global (which makes sense anyway, rather than shuffling it around the rest of the processing code). That suffices for non-dts input files. For the actual dts files, srcfile_push() and srcfile_pop() wrappers open the file while also keeping track of it as the current source file for future opens. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Enhance source position implementation.Jon Loeliger2008-10-031-2/+21
| | | | | | | | | Implemented some print and copy routines. Made empty srcpos objects that will be used later. Protected .h file from multiple #include's. Added srcpos_error() and srcpos_warn(). Signed-off-by: Jon Loeliger <jdl@freescale.com>
* dtc: Remove ugly include stack abuseDavid Gibson2008-03-231-3/+0
| | | | | | | | | | | | | | | | | | Currently, dt_from_source() uses push_input_file() to set up the initial input file for the lexer. That sounds sensible - put the outermost input file at the bottom of the stack - until you realise that what it *actually* does is pushes the current, uninitialized, lexer input state onto the stack, then sets up the new lexer input. That necessitates an extra check in pop_input_file(), rather than signalling termination in the natural way when the include stack is empty, it has to check when it pops the bogus uninitialized state off the stack. Ick. With that fixed, push_input_file(), pop_input_file() and incl_file_stack itself become local to the lexer, so make them static. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* dtc: Fix error reporting in push_input_file()David Gibson2008-03-231-1/+1
| | | | | | | | | | | | | | Error reporting in push_input_file() is a mess. One error results in a message and exit(1), others result in a message and return 0 - which is turned into an exit(1) at one callsite. The other callsite doesn't check errors, but probably should. One of the error conditions gives a message, but can only be the result of an internal programming error, not a user error. So. Clean that up by making push_input_file() a void function, using die() to report errors and quit. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Remove const from dtc_file::dir.Scott Wood2008-01-111-1/+1
| | | | Signed-off-by: Scott Wood <scottwood@freescale.com>
* Look for include files in the directory of the including file.Scott Wood2008-01-041-8/+20
| | | | | | | | | | | Looking in the diretory dtc is invoked from is not very useful behavior. As part of the code reorganization to implement this, I removed the uniquifying of name storage -- it seemed a rather dubious optimization given likely usage, and some aspects of it would have been mildly awkward to integrate with the new code. Signed-off-by: Scott Wood <scottwood@freescale.com>
* Add yyerrorf() for formatted error messages.Scott Wood2008-01-041-0/+1
| | | | Signed-off-by: Scott Wood <scottwood@freescale.com>
* dtc: move declaration of yyerrorMilton Miller2007-07-071-0/+1
| | | | | | | yyerror() is used by both dtc-parser.y and dtc-lexer.l, so move the declaration to srcpos.h. Signed-off-by: Milton Miller <miltonm@bga.com>
* DTC: Incorporate some review suggestions.Jon Loeliger2007-03-281-2/+5
| | | | | | | | | | | - Change include syntax to: /include/ "filename" - Move private functions directly into dtc-lexer.l - Define YYID for some older parser templates Also fix a #include ordering problem around YYLTPE. Signed-off-by; Jon Loeliger <jdl@freescale.com> Acked-by: Haiying Wang <Haiying.Wang@freescale.com>
* DTC: Add support for a C-like #include "file" mechanism.Jon Loeliger2007-03-261-0/+71
Keeps track of open files in a stack, and assigns a filenum to source positions for each lexical token. Modified error reporting to show source file as well. No policy on file directory basis has been decided. Still handles stdin. Tested on all arch/powerpc/boot/dts DTS files Signed-off-by: Jon Loeliger <jdl@freescale.com>