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2017-03-11Merge branch 'kbuild' of ↵Masahiro Yamada
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull Michal's unmerged branch into the new Kbuild repository. * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: genksyms: Regenerate parser genksyms: Fix segfault with invalid declarations
2017-02-03kbuild: modversions: add infrastructure for emitting relative CRCsArd Biesheuvel
This add the kbuild infrastructure that will allow architectures to emit vmlinux symbol CRCs as 32-bit offsets to another location in the kernel where the actual value is stored. This works around problems with CRCs being mistaken for relocatable symbols on kernels that self relocate at runtime (i.e., powerpc with CONFIG_RELOCATABLE=y) For the kbuild side of things, this comes down to the following: - introducing a Kconfig symbol MODULE_REL_CRCS - adding a -R switch to genksyms to instruct it to emit the CRC symbols as references into the .rodata section - making modpost distinguish such references from absolute CRC symbols by the section index (SHN_ABS) - making kallsyms disregard non-absolute symbols with a __crc_ prefix Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-05genksyms: Regenerate parserMichal Marek
Regenerate the parser after d920f7c6628c ("genksyms: Fix segfault with invalid declarations"). Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Michal Marek <mmarek@suse.com>
2017-01-05genksyms: Fix segfault with invalid declarationsMichal Marek
Do not try to recover too early and segfault when parsing invalid declarations such as echo 'int (int);' | scripts/genksyms/genksyms echo 'int a, (int);' | scripts/genksyms/genksyms echo 'extern void *__inline_memcpy((void *), (const void *), (__kernel_size_t));' | scripts/genksyms/genksyms The last one was a real-life bug with include/asm-generic/asm-prototypes.h on x86_64. Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29genksyms: Regenerate parserMichal Marek
Regenerate the keyword table and parser after commit 0efdb2282343 ("kbuild/genksyms: handle va_list type"). Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29kbuild/genksyms: handle va_list typeNicholas Piggin
genksyms currently does not handle va_list. Add the __builtin_va_list keyword as a type. This reduces the amount of syntax errors thrown, but so far no export symbol has a type with a va_list argument, so there is currently no bug in the end result. Note: this patch does not regenerate shipped parser files. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-08-25kbuild: Regenerate genksyms lexerMichal Marek
Update the lexer after 4fab91605a6b ("kbuild: genksyms fix for typeof handling"). Signed-off-by: Michal Marek <mmarek@suse.com>
2016-08-25kbuild: genksyms fix for typeof handlingNicholas Piggin
The tokenizer misses counting an open-parenthesis when parsing a non-trivial typeof beginning with an open-parenthesis. This function in include/linux/ceph/libceph.h static type *lookup_##name(struct rb_root *root, typeof(((type *)0)->keyfld) key) When instantiated in net/ceph/mon_client.c, causes subsequent symbols including an EXPORT_SYMBOL in that file to be lost. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-04-20scripts: genksyms: fix resource leakMaxim Zhukov
This commit fixed resource leak at func main Signed-off-by: Maxim Zhukov <mussitantesmortem@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2015-12-09genksyms: Handle string literals with spaces in reference filesMichal Marek
The reference files use spaces to separate tokens, however, we must preserve spaces inside string literals. Currently the only case in the tree is struct edac_raw_error_desc in <linux/edac.h>: $ KBUILD_SYMTYPES=1 make -s drivers/edac/amd64_edac.symtypes $ mv drivers/edac/amd64_edac.{symtypes,symref} $ KBUILD_SYMTYPES=1 make -s drivers/edac/amd64_edac.symtypes drivers/edac/amd64_edac.c:527: warning: amd64_get_dram_hole_info: modversion changed because of changes in struct edac_raw_error_desc Signed-off-by: Michal Marek <mmarek@suse.com>
2015-08-20genksyms: Regenerate parserMichal Marek
Rebuild the parser after commit 1c722503fa81 (genksyms: Duplicate function pointer type definitions segfault), using bison 2.7. Signed-off-by: Michal Marek <mmarek@suse.com>
2015-08-20genksyms: Duplicate function pointer type definitions segfaultRichard Yao
I noticed that genksyms will segfault when it sees duplicate function pointer type declaration when I placed the same function pointer definition in two separate headers in a local branch as an intermediate step of some refactoring. This can be reproduced by piping the following minimal test case into `genksyms -r /dev/null` or alternatively, putting it into a C file attempting a build: typedef int (*f)(); typedef int (*f)(); Attaching gdb to genksyms to understand this failure is useless without changing CFLAGS to emit debuginfo. Once you have debuginfo, you will find that the failure is that `char *s` was NULL and the program executed `while(*s)`. At which point, further debugging requires familiarity with compiler front end / parser development. What happens is that flex identifies the first instance of the token "f" as IDENT and the yacc parser adds it to the symbol table. On the second instance, flex will identify "f" as TYPE, which triggers an error case in the yacc parser. Given that TYPE would have been IDENT had it not been in the symbol table, the the segmentaion fault could be avoided by treating TYPE as IDENT in the affected rule. Some might consider placing identical function pointer type declarations in different headers to be poor style might consider a failure to be beneficial. However, failing through a segmentation fault makes the cause non-obvious and can waste the time of anyone who encounters it. Signed-off-by: Richard Yao <richard.yao@clusterhq.com> Acked-by: Madhuri Yechuri <madhuriyechuri@clusterhq.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2014-04-03genksyms: fix typeof() handlingJan Beulich
Recent increased use of typeof() throughout the tree resulted in a number of symbols (25 in a typical distro config of ours) not getting a proper CRC calculated for them anymore, due to the parser in genksyms not coping with several of these uses (interestingly in the majority of [if not all] cases the problem is due to the use of typeof() in code preceding a certain export, not in the declaration/definition of the exported function/object itself; I wasn't able to find a way to address this more general parser shortcoming). The use of parameter_declaration is a little more relaxed than would be ideal (permitting not just a bare type specification, but also one with identifier), but since the same code is being passed through an actual compiler, there's no apparent risk of allowing through any broken code. Otoh using parameter_declaration instead of the ad hoc "decl_specifier_seq '*'" / "decl_specifier_seq" pair allows all types to be handled rather than just plain ones and pointers to plain ones. Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-20genksyms: pass symbol-prefix instead of archJames Hogan
Pass symbol-prefix to genksyms instead of arch, so that the decision what symbol prefix to use is kept in one place. Basically genksyms used to take a -a $ARCH argument and it used that to determine whether to add an underscore symbol prefix. It's now changed to take a -s $SYMBOL_PREFIX argument so that the caller decides whether a symbol prefix is required. The build system then uses CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX to determine whether to pass the argument. Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-03-02genksyms: fix metag symbol prefix on crc symbolsJames Hogan
Meta uses symbol prefixes, so add "metag" to the list of architectures to set the mod_prefix to "_" for. This fixes __crc_* symbols to add the extra underscore to match _CRC_SYMBOL macro in <linux/export.h> and so that modpost finds them. Signed-off-by: James Hogan <james.hogan@imgtec.com>
2012-01-08scripts/genksyms: clean lex/yacc generated filesFernando Luis Vázquez Cao
Add "keywords.hash.c", "lex.lex.c", "parse.tab.c" and "parse.tab.h" to clean-list so that they get automagically deleted at clean/mrproper time. Signed-off-by: Fernando Luis Vazquez Cao<fernando@oss.ntt.co.jp> Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-10-11genksyms: Regenerate lexer and parserMichal Marek
2011-10-11genksyms: Do not expand internal typesMichal Marek
Consider structures, unions and enums defined in the source file as internal and do not expand them. This way, changes to e.g. struct serial_private in drivers/tty/serial/8250_pci.c will not affect the checksum of the pciserial_* exports.
2011-10-11genksyms: Minor parser cleanupMichal Marek
Move the identical logic for recording a struct/union/enum definition to a function.
2011-07-25genksyms: Use same type in loop comparisonJesper Juhl
The ARRAY_SIZE macro in scripts/genksyms/genksyms.c returns a value of type size_t. That value is being compared to a variable of type int in a loop in read_node(). Change the int variable to size_t type as well, so we don't do signed vs unsigned type comparisons with all the potential promotion/sign extension trouble that can cause (also silences compiler warnings at high levels of warnings). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-06-09genksym: regen parserArnaud Lacombe
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
2011-06-09genksyms: migrate parser to implicit rulesArnaud Lacombe
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
2011-06-09genksyms: drop -Wno-uninitialized from HOSTCFLAGS_parse.tab.oArnaud Lacombe
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
2011-06-09genksyms: pass hash and lookup functions name and target language though the ↵Arnaud Lacombe
input file Renaming hash and lookup functions on the command line would reduces its genericity. Use the .gperf file to pass this information. Do the same for the target language. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
2011-03-17genksyms: Regenerate lexer and parserMichal Marek
Regenerated the parser after "genksyms: Track changes to enum constants". Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2011-03-17genksyms: Track changes to enum constantsMichal Marek
Enum constants can be used as array sizes; if the enum itself does not appear in the symbol expansion, a change in the enum constant will go unnoticed. Example patch that changes the ABI but does not change the checksum with current genksyms: | enum e { | E1, | E2, |+ E3, | E_MAX | }; | | struct s { | int a[E_MAX]; | } | | int f(struct s *s) { ... } | EXPORT_SYMBOL(f) Therefore, remember the value of each enum constant and expand each occurence to <constant> <value>. The value is not actually computed, but instead an expression in the form (last explicitly assigned value) + N is used. This avoids having to parse and semantically understand whole of C. Note: The changes won't take effect until the lexer and parser are rebuilt by the next patch. Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2011-03-17genksyms: simplify usage of find_symbol()Michal Marek
Allow searching for symbols of an exact type. The lexer does this and a subsequent patch will add one more usage. Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2011-03-17genksyms: Add helpers for building string listsMichal Marek
Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2011-03-17genksyms: Simplify printing of symbol typesMichal Marek
Instead of special-casing SYM_NORMAL, do not map any name to it. Also explicitly set the single-letter name of the symbol type, which will be needed by a further patch. The only user-visible change is one debug printf. Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2011-03-17genksyms: Simplify lexerMichal Marek
The V2_TOKENS state is active all the time. Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2011-03-17genksyms: Do not paste the bison header file to lex.cMichal Marek
The header is already #included, no need to include it a second time. lex.c_shipped was regenerated using flex-2.5.35. Signed-off-by: Michal Marek <mmarek@suse.cz> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2010-11-25scripts/genksyms: fix header usageArnaud Lacombe
FreeBSD does not like <malloc.h> when __STDC__ is defined, use the standard <stdlib.h> instead. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-02-02genksyms: close ref_file after useAlexander Beregalov
It is the last place when the file is read, so close it. Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2009-12-12genksyms: properly consider EXPORT_UNUSED_SYMBOL{,_GPL}()Jan Beulich
Despite being unused these should also get a CRC calculated. Primarily I view this as a consistency thing. But I also think this is one of the reasons why __crc_* need to be weak (which I think should be avoided, and hence we should have the goal to eliminate this so that failure to calculate a proper CRC for a symbol causes the build to fail). Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Anibal Monsalve Salazar <anibal@debian.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2009-11-15genksyms: Mark is_reserved_word staticJosh Triplett
The genksyms keyword gperf hash provides a function is_reserved_word. genksyms #includes the resulting generated file keywords.c, so the function gets used only in the same source file that defines it. Mark is_reserved_word static, and regenerate the corresponding generated file. Signed-off-by: Josh Triplett <josh@joshtriplett.org>
2009-09-23Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGSLadinu Chandrasinghe
Fix up -Wmissing-prototypes in compileable userspace code, mainly under Documentation/. Signed-off-by: Ladinu Chandrasinghe <ladinu.pub@gmail.com> Signed-off-by: Trevor Keith <tsrk@tsrk.net> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-14Revert "kbuild: strip generated symbols from *.ko"Sam Ravnborg
This reverts commit ad7a953c522ceb496611d127e51e278bfe0ff483. And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL") 9bb482476c6c9d1ae033306440c51ceac93ea80c These stripping patches has caused a set of issues: 1) People have reported compatibility issues with binutils due to lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2 Reported by: Wenji 2) ccache and distcc no longer works as expeced Reported by: Ted, Roland, + others 3) The installed modules increased a lot in size Reported by: Ted, Davej + others Reported-by: Wenji Huang <wenji.huang@oracle.com> Reported-by: "Theodore Ts'o" <tytso@mit.edu> Reported-by: Dave Jones <davej@redhat.com> Reported-by: Roland McGrath <roland@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-12-19allow stripping of generated symbols under CONFIG_KALLSYMS_ALLJan Beulich
Building upon parts of the module stripping patch, this patch introduces similar stripping for vmlinux when CONFIG_KALLSYMS_ALL=y. Using CONFIG_KALLSYMS_STRIP_GENERATED reduces the overhead of CONFIG_KALLSYMS_ALL from 245k/310k to 65k/80k for the (i386/x86-64) kernels I tested with. The patch also does away with the need to special case the kallsyms- internal symbols by making them available even in the first linking stage. While it is a generated file, the patch includes the changes to scripts/genksyms/keywords.c_shipped, as I'm unsure what the procedure here is. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-12-19kbuild: strip generated symbols from *.koJan Beulich
This patch changes the way __crc_ symbols are being resolved from using ld to do so to using the assembler, thus allowing these symbols to be marked local (the linker creates then as global ones) and hence allow stripping (for modules) or ignoring (for vmlinux) them. While at this, also strip other generated symbols during module installation. One potentially debatable point is the handling of the flags passeed to gcc when translating the intermediate assembly file into an object: passing $(c_flags) unchanged doesn't work as gcc passes --gdwarf2 to gas whenever is sees any -g* option, even for -g0, and despite the fact that the compiler would have already produced all necessary debug info in the C->assembly translation phase. I took the approach of just filtering out all -g* options, but an alternative to such negative filtering might be to have a positive filter which might, in the ideal case allow just all the -Wa,* options to pass through. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-12-03genksyms: allow to ignore symbol checksum changesAndreas Gruenbacher
This adds an "override" keyword for use in *.symvers / *.symref files. When a symbol is overridden, the symbol's old definition will be used for computing checksums instead of the new one, preserving the previous checksum. (Genksyms will still warn about the change.) This is meant to allow distributions to hide minor actual as well as fake ABI changes. (For example, when extra type information becomes available because additional headers are included, this may change checksums even though none of the types used have actully changed.) This approach also allows to get rid of "#ifdef __GENKSYMS__" hacks in the code, which are currently used in some vendor kernels to work around checksum changes. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-12-03genksyms: track symbol checksum changesAndreas Gruenbacher
Sometimes it is preferable to avoid changes of exported symbol checksums (to avoid breaking externally provided modules). When a checksum change occurs, it can be hard to figure out what caused this change: underlying types may have changed, or additional type information may simply have become available at the point where a symbol is exported. Add a new --reference option to genksyms which allows it to report why checksums change, based on the type information dumps it creates with the --dump-types flag. Genksyms will read in such a dump from a previous run, and report which symbols have changed (and why). The behavior can be controlled for an entire build as follows: If KBUILD_SYMTYPES is set, genksyms uses --dump-types to produce *.symtypes dump files. If any *.symref files exist, those will be used as the reference to check against. If KBUILD_PRESERVE is set, checksum changes will fail the build. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-31kbuild: genksyms: Include extern information in dumpsAndreas Gruenbacher
The extern flag currently is not included in type dump files (genksyms --dump-types). Include that flag there for completeness. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-31kbuild: genksyms parser: fix the __attribute__ ruleAndreas Gruenbacher
We are having two kinds of problems with genksyms today: fake checksum changes without actual ABI changes, and changes which we would rather like to ignore (such as an additional field at the end of a structure that modules are not supposed to touch, for example). I have thought about ways to improve genksyms and compute checksums differently to avoid those problems, but in the end I don't see a fundamentally better way. So here are some genksyms patches for at least making the checksums more easily manageable, if we cannot fully fix them. In addition to the bugfixes (the first two patches), this allows genksyms to track checksum changes and report why a checksum changed (third patch), and to selectively ignore changes (fourth patch). This patch: Gcc __attribute__ definitions may occur repeatedly, e.g., static int foo __attribute__((__used__)) __attribute__((aligned (16))); The genksyms parser does not understand this, and generates a syntax error. Fix this case. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-30kbuild: scripts/genksyms/lex.l: add %option noinputAdrian Bunk
gcc 4.3 correctly determines that input() is unused and gives the following warning: <-- snip --> ... HOSTCC scripts/genksyms/lex.o scripts/genksyms/lex.c:1487: warning: ‘input’ defined but not used ... <-- snip --> Fix it by adding %option noinput to scripts/genksyms/lex.l and regeneration of scripts/genksyms/lex.c_shipped. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-07-24remove the v850 portAdrian Bunk
Trying to compile the v850 port brings many compile errors, one of them exists since at least kernel 2.6.19. There also seems to be noone willing to bring this port back into a usable state. This patch therefore removes the v850 port. If anyone ever decides to revive the v850 port the code will still be available from older kernels, and it wouldn't be impossible for the port to reenter the kernel if it would become actively maintained again. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-28kbuild: fixup genksyms usage/getoptMike Frysinger
The usage does not mention the "-a,--arch" or "-T,--dump-types" options, so add them. The calls to getopt() seem to mention options that no longer exist (some "k" and "p" thingy) but omits the "h" option which means using '-h' actually triggers the error code path, so update those as well. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-12kbuild: apply genksyms changesSam Ravnborg
This patch updates the _shipped files for genksyms. See previous patch for actual functional changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-12kbuild: __extension__ support in genksyms (fix unknown CRC warning)Sam Ravnborg
Recently the __extension__ keyword has been introduced in the kernel. Teach genksyms about this keyword so it can generate correct CRC for exported symbols that uses a symbol marked __extension__. For now only the typedef variant: __extension__ typedef ... is supported. Later we may add more variants as needed. This patch contains the actual source file changes. The following patch will hold modifications to the generated files (*_shipped) and only after the second patch the fix has effect. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-12kbuild: fix genksyms MakefileSam Ravnborg
When enabling GENERATE_PARSER the genksyms Makefile failed to create _shipped version of generated files. Modifying keywords.gperf failed to cause a rebuild of genksyms. Fixed by specifying keywowrds .c as explicit prerequisite of the lexer. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-07blackfin architectureBryan Wu
This adds support for the Analog Devices Blackfin processor architecture, and currently supports the BF533, BF532, BF531, BF537, BF536, BF534, and BF561 (Dual Core) devices, with a variety of development platforms including those avaliable from Analog Devices (BF533-EZKit, BF533-STAMP, BF537-STAMP, BF561-EZKIT), and Bluetechnix! Tinyboards. The Blackfin architecture was jointly developed by Intel and Analog Devices Inc. (ADI) as the Micro Signal Architecture (MSA) core and introduced it in December of 2000. Since then ADI has put this core into its Blackfin processor family of devices. The Blackfin core has the advantages of a clean, orthogonal,RISC-like microprocessor instruction set. It combines a dual-MAC (Multiply/Accumulate), state-of-the-art signal processing engine and single-instruction, multiple-data (SIMD) multimedia capabilities into a single instruction-set architecture. The Blackfin architecture, including the instruction set, is described by the ADSP-BF53x/BF56x Blackfin Processor Programming Reference http://blackfin.uclinux.org/gf/download/frsrelease/29/2549/Blackfin_PRM.pdf The Blackfin processor is already supported by major releases of gcc, and there are binary and source rpms/tarballs for many architectures at: http://blackfin.uclinux.org/gf/project/toolchain/frs There is complete documentation, including "getting started" guides available at: http://docs.blackfin.uclinux.org/ which provides links to the sources and patches you will need in order to set up a cross-compiling environment for bfin-linux-uclibc This patch, as well as the other patches (toolchain, distribution, uClibc) are actively supported by Analog Devices Inc, at: http://blackfin.uclinux.org/ We have tested this on LTP, and our test plan (including pass/fails) can be found at: http://docs.blackfin.uclinux.org/doku.php?id=testing_the_linux_kernel [m.kozlowski@tuxland.pl: balance parenthesis in blackfin header files] Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Aubrey Li <aubrey.li@analog.com> Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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