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2020-08-20sh: propage the calling conventions change down to csum_partial_copy_generic()Al Viro
... and get rid of zeroing destination on error there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-08-14sh: remove -Werror from MakefilesChristoph Hellwig
The sh build is full of warnings when building with gcc 9.2.1. While fixing those would be great, at least avoid failing the build. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14Revert "sh: add missing EXPORT_SYMBOL() for __delay"Geert Uytterhoeven
This reverts commit d1f56f318d234fc5db230af2f3e0088f689ab3c0. __delay() is an internal implementation detail on several architectures. Drivers should not call __delay() directly, as it has non-standardized semantics, or may not even exist. Hence there is no need to export __delay() to modules. See also include/asm-generic/delay.h: /* Undefined functions to get compile-time errors */ ... extern void __delay(unsigned long loops); Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-06-01sh: add missing EXPORT_SYMBOL() for __delayKuninori Morimoto
__delay() is used from kernel module. We need EXPORT_SYMBOL(), otherwise we will get compile error. ERROR: "__delay" [drivers/net/phy/mdio-cavium.ko] undefined! Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Rich Felker <dalias@libc.org>
2018-12-28sh: lib: convert to SPDX identifiersKuninori Morimoto
Update license to use SPDX-License-Identifier instead of verbose license text. Link: http://lkml.kernel.org/r/871s6wcswb.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-17sh: New gcc supportYoshinori Sato
New gcc (4.8 or later) used new shift helper functions. So we need added new helper to private libgcc. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Rich Felker <dalias@libc.org>
2014-07-18sh: ftrace: Remove check of obsolete variable function_trace_stopSteven Rostedt (Red Hat)
Nothing sets function_trace_stop to disable function tracing anymore. Remove the check for it in the arch code. [ Please test this on your arch ] Cc: Matt Fleming <matt@console-pimps.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-12-18sh: always link in helper functions extracted from libgccGeert Uytterhoeven
E.g. landisk_defconfig, which has CONFIG_NTFS_FS=m: ERROR: "__ashrdi3" [fs/ntfs/ntfs.ko] undefined! For "lib-y", if no symbols in a compilation unit are referenced by other units, the compilation unit will not be included in vmlinux. This breaks modules that do reference those symbols. Use "obj-y" instead to fix this. http://kisskb.ellerman.id.au/kisskb/buildresult/8838077/ This doesn't fix all cases. There are others, e.g. udivsi3. This is also not limited to sh, many architectures handle this in the same way. A simple solution is to unconditionally include all helper functions. A more complex solution is to make the choice of "lib-y" or "obj-y" depend on CONFIG_MODULES: obj-$(CONFIG_MODULES) += ... lib-y($CONFIG_MODULES) += ... Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Paul Mundt <lethal@linux-sh.org> Tested-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Reviewed-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-14sh: Fix up stack debugging build.Paul Mundt
Somewhere along the line the ebss label was taken out, resulting in pcrel branch too far errors. Restore the label to get things building again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-27mtd/uclinux: Use generic __bss_stop instead of _ebssGeert Uytterhoeven
The standard (see BSS_SECTION() in <asm-generic/vmlinux.lds.h> and <asm-generic/sections.h>) symbol for the end of BSS is __bss_stop. This allows to remove all local declarations that have been added to several architectures just to please CONFIG_MTD_UCLINUX. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Greg Ungerer <gerg@uclinux.org>
2011-02-15sh: Ensure ST40-300 BogoMIPS value is consistentStuart Menefy
A strange variation was seen in the BogoMIPS figure for the ST40-300. This was eventually tracked down to sensitivity to the alignment of the loop. So add an align directive to ensure this doesn't occur. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-23sh: change to new flag variablematt mooney
Replace EXTRA_CFLAGS with ccflags-y. Signed-off-by: matt mooney <mfm@muteddisk.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-24arch/sh/lib/strlen.S: Checkpatch cleanupAndrea Gelmini
arch/sh/lib/strlen.S:38: ERROR: trailing whitespace Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-01arch/sh/lib/libgcc.h: Checkpatch cleanupAndrea Gelmini
arch/sh/lib/libgcc.h:21: ERROR: open brace '{' following union go on the same line Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-24sh: Optimised memset for SH4Stuart Menefy
Optimised version of memset for the SH4 which uses movca.l. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-09-08sh: Kill off dcache writeback from copy_page().Paul Mundt
Now that the cache purging is handled manually by all copy_page() callers, we can kill off copy_page()'s on writeback. This optimizes the non-aliasing case. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-09-01Merge branch 'master' into sh/smpPaul Mundt
Conflicts: arch/sh/mm/cache-sh4.c
2009-08-24sh: Fix underflow in SH udelay() code.Stuart Menefy
Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-24sh: Remove implicit sign extension from assembler immediatesStuart Menefy
The SH instruction set has several instructions which accept an 8 bit immediate operand. For logical instructions this operand is zero extended, for arithmetic instructions the operand is sign extended. After adding an option to the assembler to check this, it was found that several pieces of assembly code were assuming this behaviour, and in one case getting it wrong. So this patch explicitly sign extends any immediate operands, which makes it obvious what is happening, and fixes the one case which got it wrong. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-27sh: Rename arch/sh/lib/clear_page.S -> __clear_user.S.Paul Mundt
Now that this only contains the __clear_user() function, rename it accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-27sh: wire up clear_user_highpage() for sh4, convert sh7705.Paul Mundt
This wires up clear_user_highpage() on SH-4 and subsequently converts the SH7705 32kB cache mode over to using it. Now that the SH-4 implementation handles all of the dcache purging directly in the aliasing case, there is no need to do this in the default clear_page() implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11sh: Fix up stack overflow check with ftrace disabled.Paul Mundt
Presently the STACK_CHECK() code is called in to multiple times, although it's only necessary from the mcount entry. The code still attempts to treat the nop case as an ftrace path resulting in superfluous code flow for the case where ftrace is disabled. And finally, this also fixes up references to a few undefined symbols when FUNCTION_TRACER=n. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11sh: Fix up ftrace build error when STACK_DEBUG=n.Paul Mundt
Presently the closest reference to function_trace_stop is within a CONFIG_STACK_DEBUG block. When this is turned off, the build bails out with a pcrel too far error. Reorder things a bit to handle the various combinations. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11sh: Decouple mcount from ftrace.Paul Mundt
This adds a general CONFIG_MCOUNT in order to permit mcount generation without ftrace support. This is primarily for allowing platforms to enable aggressive stack overflow checking without having to enable ftrace support. Based on the sparc64 implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11sh: Function graph tracer supportMatt Fleming
Add both dynamic and static function graph tracer support for sh. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11sh: Provide diagnostic kernel stack checksMatt Fleming
Enable kernel stack checking code in both the dynamic ftrace and mcount code paths. Check the stack to see if it's overflowing and make sure that the stack pointer contains an address that's either in init_stack or after the bss. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06sh: Add ftrace syscall tracing supportMatt Fleming
Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into a single byte any more. Code testing them now needs to be aware of the upper and lower bytes. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06sh: Define HAVE_FUNCTION_TRACE_MCOUNT_TESTMatt Fleming
Enable HAVE_FUNCTION_TRACE_MCOUNT_TEST and test the value of function_trace_stop from our assembly code as opposed to using the generic C function. This should optimise our mcount/ftrace code path. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-29sh: Handle calling csum_partial with misaligned dataStuart Menefy
In rare circumstances csum_partial() can be called with data which is not 16 or 32 bit aligned. This is been observed with RPC calls for NFS file systems for example. Add support for handling this without resorting to the misaligned fixup code (which is why this hasn't been seen as a problem). This mimics the i386 version, which has had this support for some time. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Add plain udivsi3 (not _i4*) for gcc-4.1 and lower.Takashi YOSHII
We chan't share code for udivsi3 and udivsi3_i4, because they have a different clobber list. Copy udivsi3 from gcc-4.1.2. As shown in arch/sh/lib/udivsi3.S (and -Os.S), .global __udivsi3_i4i .global __udivsi3_i4 .global __udivsi3 __udivsi3_i4i: ... Three symbols are sharing one code, which is actually udivsi3_i4i. But, this results unwanted code with gcc 4.1. In gcc, these three are treated as pseudo instructions that have their own clobber list apart from the usual calling convention. According to sh's machine description. The clobber list is as follows: - udivsi3_i4i : t,r1,pr,mach,macl - udivsi3_i4 : t,r0,r1,r4,r5,pr,dr0,dr2,dr4 - udivsi3 : t,r4,pr The caller of udivsi3 will be left with a broken r1 and mac*. gcc-4.1.x and older(at least to 3.4) generate udivsi3. ST's gcc-4.1.1 seems to be OK because it has _i4i. Signed-off-by: Takashi YOSHII <yoshii.takashi@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Add exports for __udivsi3/__sdivsi3 and the _i4 versions.Paul Mundt
Needed by older compilers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Migrate necessary libgcc bits in to arch/sh/lib for SUPERH32.Paul Mundt
This moves in the necessary libgcc bits for SUPERH32 and drops the libgcc linking for the regular targets. This in turn allows us to rip out quite a few hacks both in sh_ksyms_32 and arch/sh/Makefile. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: dynamic ftrace support.Matt Fleming
First cut at dynamic ftrace support. Signed-off-by: Matt Fleming <mjf@gentoo.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-13sh: __copy_user function can corrupt the stack in case of exceptionStuart MENEFY
The __copy_user function can corrupt the stack in the case of a non-trivial length of data, and either of the first two move instructions cause an exception. This is because the fixup for these two instructions is mapped to the no_pop case, but these instructions execute after the stack is pushed. This change creates an explicit NO_POP exception mapping macro, and uses it for the two instructions executed in the trivial case where no stack pushes occur. More information at ST Linux bugzilla: https://bugzilla.stlinux.com/show_bug.cgi?id=4824 Signed-off-by: Dylan Reid <dylan_reid@bose.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-01sh: Fix up the __raw_read/writeX() definitions.Paul Mundt
These were doing largely bogus things and using the wrong typing for the address. Bring these in line with the ARM definitions. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: fixup many sparse errors.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28move arch/sh/lib/io.o to obj-yAdrian Bunk
EXPORT_SYMBOL's in lib-y considered harmful: <-- snip --> ... MODPOST 1837 modules ERROR: "__raw_readsl" [drivers/ssb/ssb.ko] undefined! ERROR: "__raw_writesl" [drivers/ssb/ssb.ko] undefined! ERROR: "__raw_writesl" [drivers/net/smc91x.ko] undefined! ERROR: "__raw_readsl" [drivers/net/smc91x.ko] undefined! ERROR: "__raw_writesl" [drivers/net/3c59x.ko] undefined! ERROR: "__raw_readsl" [drivers/net/3c59x.ko] undefined! ... make[2]: *** [__modpost] Error 1 <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-16sh: Fix up optimized SH-4 memcpy on big endian.Hideo Saito
Signed-off-by: Hideo Saito <saito@densan.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-04-18sh: Allow optimized clear/copy page routines to be used on SH-2.Paul Mundt
Presently these are restricted to SH-3 and SH-4, so we reorder the ifdefs a bit to let other parts use these also. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Explicit alignment for PAGE_SIZE in copy/clear_page().Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Build fixes for lib32 clear_page.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: clear/copy_page renames in lib and lib64.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28sh: Move sh32 optimized I/O routines to arch/sh/lib/Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-07sh: Add -Werror for clean directories.Paul Mundt
Follow the MIPS and sparc64 changes for -Werror instrumentation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-13sh: Revert __xdiv64_32 size change.Paul Mundt
It's only __div64_32 that needs the fix, __xdiv64_32 behaves as expected with the original size. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-06sh: Correct __xdiv64_32/div64_32 return value size.Paul Mundt
These should be returning a uint32_t, whereas they were erroneously returning a u64 before. As the register sizes are 32-bits, this doesn't really make a lot of sense. Reported-by: Katsuya MATSUBARA <matsu@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-09sh: Fixup ndelay() xloops calculation for alternate HZ.kogiidena
Currently the xloops calculation in ndelay() gets set to 0 when calculated with HZ=250, fix up how we do the HZ factoring in order to get this right for differing values. Signed-off-by: kogiidena <kogiidena@eggplant.ddo.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: Kill off udivdi3 div64_32 wrapping.Paul Mundt
Previously we've been handling udivdi3 references and wrapping them in to div64_32() automatically. This doesn't get a lot of use, however, and as akpm noted in the recent thread on l-k: http://lkml.org/lkml/2007/2/27/241 we're better off simply ripping it out and going the do_div() route if there happen to be any places that need it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-04-26[STRING]: Move strcasecmp/strncasecmp to lib/string.cDavid S. Miller
We have several platforms using local copies of identical code. Signed-off-by: David S. Miller <davem@davemloft.net>