kernel/arch/mips/include/asm/fpregdef.h, branch linux-rolling-stable

MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT

2023-01-26T03:41:16Z

-Wa,-msoft-float is tested with as-option, which will be a problem for clang with an upcoming change to move as-option to use KBUILD_AFLAGS instead of KBUILD_CFLAGS due to a lack of '-mno-abicalls' in KBUILD_AFLAGS at the point that this check occurs; $(cflags-y) is added to KBUILD_AFLAGS towards the end of this file. clang: error: ignoring '-fno-PIE' option as it cannot be used with implicit usage of -mabicalls and the N64 ABI [-Werror,-Woption-ignored] This could be resolved by switching to a cc-option check but '$(cflags-y)' would need to be added so that '-mno-abicalls' is present for the test. However, this check is no longer necessary, as -msoft-float is supported by all supported assembler versions (GNU as 2.25+ and LLVM 11+). Eliminate GAS_HAS_SET_HARDFLOAT and all of its uses, inlining SET_HARDFLOAT where necessary. Link: https://lore.kernel.org/202209101939.bvk64Fok-lkp@intel.com/ Reported-by: kernel test robot Signed-off-by: Nathan Chancellor Acked-by: Thomas Bogendoerfer Reviewed-by: Nick Desaulniers Reviewed-by: Philippe Mathieu-Daudé Tested-by: Linux Kernel Functional Testing Tested-by: Anders Roxell Signed-off-by: Masahiro Yamada

MIPS: Fix build with binutils 2.24.51+

2014-11-07T14:07:36Z

Starting with version 2.24.51.20140728 MIPS binutils complain loudly about mixing soft-float and hard-float object files, leading to this build failure since GCC is invoked with "-msoft-float" on MIPS: {standard input}: Warning: .gnu_attribute 4,3 requires `softfloat' LD arch/mips/alchemy/common/built-in.o mipsel-softfloat-linux-gnu-ld: Warning: arch/mips/alchemy/common/built-in.o uses -msoft-float (set by arch/mips/alchemy/common/prom.o), arch/mips/alchemy/common/sleeper.o uses -mhard-float To fix this, we detect if GAS is new enough to support "-msoft-float" command option, and if it does, we can let GCC pass it to GAS; but then we also need to sprinkle the files which make use of floating point registers with the necessary ".set hardfloat" directives. Signed-off-by: Manuel Lauss Cc: Linux-MIPS Cc: Matthew Fortune Cc: Markos Chandras Cc: Maciej W. Rozycki Patchwork: https://patchwork.linux-mips.org/patch/8355/ Signed-off-by: Ralf Baechle

MIPS: Whitespace cleanup.

2013-02-01T09:00:22Z

Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle

MIPS: Move headfiles to new location below arch/mips/include

2008-10-11T15:18:52Z

Signed-off-by: Ralf Baechle