Changes in asm.h

a1b7508c - MIPS: Guard some macros with ASSEMBLY in asm.h

Tue, 26 Mar 2024 11:41:45 +0000

MIPS: Guard some macros with __ASSEMBLY__ in asm.hThere are some assembly macros with very generic namingbeing defined asm.h. They are clashing with other macrosfrom C code.Guard them with __ASSEMBLY__ to prevent futher clashes.Reported-by: Geert Uytterhoeven Link: https://lore.kernel.org/linux-mips/8d78894-dd89-9f4d-52bb-1b873c50be9c@linux-m68k.org/Signed-off-by: Jiaxun Yang Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

1a2c73f4 - MIPS: Workaround clang inline compat branch issue

Tue, 28 Feb 2023 19:34:59 +0000

MIPS: Workaround clang inline compat branch issueClang is unable to handle the situation that a chunk of inlineassembly ends with a compat branch instruction and then compilergenerates another control transfer instruction immediately afterthis compat branch. The later instruction will end up in forbiddenslot and cause exception.Workaround by add a option to control the use of compact branch.Currently it's selected by CC_IS_CLANG and hopefully we can changeit to a version check in future if clang manages to fix it.Fix boot on boston board.Link: https://github.com/llvm/llvm-project/issues/61045Signed-off-by: Jiaxun Yang Acked-by: Nathan Chancellor Acked-by: Nick Desaulniers Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

fa62f39d - MIPS: Fix build error due to PTR used in more places

Tue, 25 Jan 2022 14:19:44 +0000

MIPS: Fix build error due to PTR used in more placesUse PTR_WD instead of PTR to avoid clashes with other parts.Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

f0b7ddbd - MIPS: retire "asm/llsc.h"

Wed, 15 Dec 2021 08:45:00 +0000

MIPS: retire "asm/llsc.h"all that "asm/llsc.h" does is just to help inline asm, which can bestringifyed from "asm/asm.h"+. Since "asm/asm.h" has all we need, retire "asm/llsc.h"+. remove unused header fileInspired-by: Maciej W. Rozycki Signed-off-by: Huang Pei Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

10657660 - MIPS: rework local_t operation on MIPS64

Wed, 15 Dec 2021 08:44:59 +0000

MIPS: rework local_t operation on MIPS64+. remove "asm/war.h" since R10000_LLSC_WAR became a config option+. clean upSuggested-by: Maciej W. Rozycki Signed-off-by: Huang Pei Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

86ce91d5 - MIPS/asm/printk: Fix build failure caused by printk

Fri, 23 Jul 2021 07:25:30 +0000

MIPS/asm/printk: Fix build failure caused by printkThe commit 337015573718b161 ("printk: Userspace format indexing support")caused the following build failure:arch/mips/kernel/genex.o: In function `handle_mcheck_int':(.text+0x190c): undefined reference to `printk'arch/mips/kernel/genex.o: In function `handle_reserved_int':(.text+0x1c8c): undefined reference to `printk'Fixes: 337015573718b161 ("printk: Userspace format indexing support")Reported-by: Stephen Rothwell Suggested-by: Chris Down Signed-off-by: Petr Mladek Link: https://lore.kernel.org/r/YPbBfdz9srIpI+bb@chrisdown.name List of files: /linux-6.15/arch/mips/include/asm/asm.h

894ef530 - MIPS: properly stop .eh_frame generation

Sun, 10 Jan 2021 11:56:28 +0000

MIPS: properly stop .eh_frame generationCommit 866b6a89c6d1 ("MIPS: Add DWARF unwinding to assembly") added-fno-asynchronous-unwind-tables to KBUILD_CFLAGS to prevent compilerfrom emitting .eh_frame symbols.However, as MIPS heavily uses CFI, that's not enough. Use theapproach taken for x86 (as it also uses CFI) and explicitly put CFIsymbols into the .debug_frame section (except for VDSO).This allows us to drop .eh_frame from DISCARDS as it's no longerbeing generated.Fixes: 866b6a89c6d1 ("MIPS: Add DWARF unwinding to assembly")Suggested-by: Kees Cook Signed-off-by: Alexander Lobakin Reviewed-by: Kees Cook Reviewed-by: Nathan Chancellor Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

da706e50 - MIPS: asm: Rename some macros to avoid build errors

Thu, 07 May 2020 09:49:18 +0000

MIPS: asm: Rename some macros to avoid build errorsUse ASM_ prefix to rename some macros (PANIC and PRINT), in order toavoid build errors (all users are updated as well):1, PANIC conflicts with drivers/scsi/smartpqi/smartpqi_init.c2, PRINT conflicts with net/netfilter/nf_conntrack_h323_asn1.c and net/ mac80211/debugfs_sta.cFixes: d339cd02b888eb8 ("MIPS: Move unaligned load/store helpers to inst.h")Reported-by: kbuild test robot Signed-off-by: Huacai Chen Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

d339cd02 - MIPS: Move unaligned load/store helpers to inst.h

Fri, 24 Apr 2020 10:56:45 +0000

MIPS: Move unaligned load/store helpers to inst.hMove unaligned load/store helpers from unaligned.c to inst.h, thenother parts of the kernel can use these helpers.Use __ASSEMBLY__ to guard the definition of "LONG" in asm.h to avoidbuild error on IPxx platforms.Signed-off-by: Huacai Chen Signed-off-by: Pei Huang Reviewed-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/include/asm/asm.h

7f8502a5 - MIPS: Remove unused PREF, PREFE & PREFX macros

Mon, 15 Oct 2018 18:33:23 +0000

MIPS: Remove unused PREF, PREFE & PREFX macrosasm/asm.h provides PREF(), PREFE() & PREFX() macros which are nowentirely unused. Delete the dead code.Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/20908/Cc: linux-mips@linux-mips.org List of files: /linux-6.15/arch/mips/include/asm/asm.h

e2b40543 - MIPS: Remove unused CAT macro

Mon, 15 Oct 2018 18:33:21 +0000

MIPS: Remove unused CAT macroasm/asm.h provides a CAT macro which is unused throughout the tree, andif anyone wanted it the generic CONCATENATE macro in linux/kernel.hprovides the same functionality. Delete the dead code.Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/20905/Cc: linux-mips@linux-mips.org List of files: /linux-6.15/arch/mips/include/asm/asm.h

da1d25e7 - MIPS: Remove unused TTABLE macro

Mon, 15 Oct 2018 18:33:20 +0000

MIPS: Remove unused TTABLE macroasm/asm.h contains a TTABLE macro to generate "text tables" which wouldappear to be arrays of pointers to strings. It is unused throughout thekernel tree, so delete the dead code.Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/20904/Cc: linux-mips@linux-mips.org List of files: /linux-6.15/arch/mips/include/asm/asm.h

fce362c7 - MIPS: Remove unused PIC macros

Mon, 15 Oct 2018 18:33:19 +0000

MIPS: Remove unused PIC macrosasm/asm.h contains CPRESTORE, CPADD & CPLOAD macros that are intendedfor use with position independent code, but are not used anywhere in thekernel - along with a comment to that effect. Remove the dead code.Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/20903/Cc: linux-mips@linux-mips.org List of files: /linux-6.15/arch/mips/include/asm/asm.h

7b2d13f2 - MIPS: Remove unused MOVN & MOVZ macros

Mon, 15 Oct 2018 18:33:19 +0000

MIPS: Remove unused MOVN & MOVZ macrosWe have macros in asm/asm.h to allow for use of the MOVN & MOVZinstructions with compare-and-branch sequences providing compatibilityfor ISA versions which don't include those instructions. However themacros are unused, and appear to have always been unused. Delete thedead code.Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/20909/Cc: linux-mips@linux-mips.org List of files: /linux-6.15/arch/mips/include/asm/asm.h

866b6a89 - MIPS: Add DWARF unwinding to assembly

Thu, 10 Aug 2017 18:27:39 +0000

MIPS: Add DWARF unwinding to assemblyThis will allow kdump dumps to work correclty with MIPS andfuture DWARF unwinding of the stack to give accurate tracebacks.Signed-off-by: Corey Minyard Cc: linux-mips@linux-mips.orgCc: linux-kernel@vger.kernel.orgPatchwork: https://patchwork.linux-mips.org/patch/16990/Signed-off-by: Ralf Baechle List of files: /linux-6.15/arch/mips/include/asm/asm.h

08889582 - MIPS: End asm function prologue macros with .insn

Mon, 07 Nov 2016 11:14:09 +0000

MIPS: End asm function prologue macros with .insnWhen building a kernel targeting a microMIPS ISA, recent GNU linkerswill fail the link if they cannot determine that the target of a branchor jump is microMIPS code, with errors such as the following: mips-img-linux-gnu-ld: arch/mips/built-in.o: .text+0x542c: Unsupported jump between ISA modes; consider recompiling with interlinking enabled. mips-img-linux-gnu-ld: final link failed: Bad valueor: ./arch/mips/include/asm/uaccess.h:1017: warning: JALX to a non-word-aligned addressPlacing anything other than an instruction at the start of a functionwritten in assembly appears to trigger such errors. In order to preparefor allowing us to follow function prologue macros with an EXPORT_SYMBOLinvocation, end the prologue macros (LEAD, NESTED & FEXPORT) with a.insn directive. This ensures that the start of the function is markedas code, which always makes sense for functions & safely prevents usfrom hitting the link errors described above.Signed-off-by: Paul Burton Reviewed-by: Maciej W. Rozycki Cc: linux-mips@linux-mips.orgPatchwork: https://patchwork.linux-mips.org/patch/14508/Signed-off-by: Ralf Baechle List of files: /linux-6.15/arch/mips/include/asm/asm.h

a809d460 - MIPS: Fix gigaton of warning building with microMIPS.

Sun, 30 Mar 2014 11:20:10 +0000

MIPS: Fix gigaton of warning building with microMIPS.With binutils 2.24 the attempt to switch with microMIPS mode to MIPS IIImode through .set mips3 results in *lots* of warnings like{standard input}: Assembler messages:{standard input}:397: Warning: the 64-bit MIPS architecture does not support the `smartmips' extensionduring a kernel build. Fixed by using .set arch=r4000 instead.This breaks support for building the kernel with binutils 2.13 whichwas supported for 32 bit kernels only anyway and 2.14 which was a badvintage for MIPS anyway.Signed-off-by: Ralf Baechle List of files: /linux-6.15/arch/mips/include/asm/asm.h

93244945 - MIPS: asm: Add wrappers for EVA/non-EVA instructions

Wed, 04 Dec 2013 13:56:03 +0000

MIPS: asm: Add wrappers for EVA/non-EVA instructionsEVA uses specific instructions for accessing user memory.Instead of polluting the kernel with numerous #ifdef CONFIG_EVAwe add wrappers for all the instructions that need specialhandling when EVA is enabled.Signed-off-by: Markos Chandras List of files: /linux-6.15/arch/mips/include/asm/asm.h

5b736cd2 - MIPS: asm: Add prefetch instruction for EVA

Tue, 03 Dec 2013 10:48:15 +0000

MIPS: asm: Add prefetch instruction for EVAEVA can use the PREFE instruction to perform the virtual addresstranslation using the user mapping of the address rather than thekernel mapping.Signed-off-by: Leonid Yegoshin Signed-off-by: Markos Chandras List of files: /linux-6.15/arch/mips/include/asm/asm.h

26c5e07d - MIPS: microMIPS: Optimise 'memset' core library function.

Mon, 25 Mar 2013 18:40:49 +0000

MIPS: microMIPS: Optimise 'memset' core library function.Optimise 'memset' to use microMIPS instructions and/or optimisationsfor binary size reduction. When the microMIPS ISA is not being used,the library function compiles to the original binary code.Signed-off-by: Steven J. Hill List of files: /linux-6.15/arch/mips/include/asm/asm.h