kernel/linux.git/arch/mips/lib/strnlen_user.S, branch linux-4.4.y

MIPS: strnlen_user.S: Fix a CPU_DADDI_WORKAROUNDS regression

2015-05-29T18:23:58+00:00

Correct a regression introduced with 8453eebd [MIPS: Fix strnlen_user() return value in case of overlong strings.] causing assembler warnings and broken code generated in __strnlen_kernel_nocheck_asm: arch/mips/lib/strnlen_user.S: Assembler messages: arch/mips/lib/strnlen_user.S:64: Warning: Macro instruction expanded into multiple instructions in a branch delay slot with the CPU_DADDI_WORKAROUNDS option set, resulting in the function looping indefinitely upon mounting NFS root. Use conditional assembly to avoid a microMIPS code size regression. Using $at unconditionally would cause such a regression as there are no 16-bit instruction encodings available for ALU operations using this register. Using $v1 unconditionally would produce short microMIPS encodings, but would prevent this register from being used across calls to this function. The extra LI operation introduced is free, replacing a NOP originally scheduled into the delay slot of the branch that follows. Signed-off-by: Maciej W. Rozycki Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/10205/ Signed-off-by: Ralf Baechle

MIPS: Fix strnlen_user() return value in case of overlong strings.

2014-11-04T11:46:33+00:00

We were returning maxlen like the userland strnlen if no '\0' character was encountered while the kernel version is expected to return a value larger than maxlen. Fixed to return maxlen + 1. Signed-off-by: Ralf Baechle

MIPS: lib: strnlen_user: Add EVA support

2014-03-26T22:09:13+00:00

In non-EVA mode, a strlen_user* alias is used for the strlen_kernel* symbols since the code is identical. In EVA mode, a new strlen_user* symbol is used which uses the EVA specific instructions to load values from userspace. Signed-off-by: Markos Chandras

MIPS: lib: strnlen_user: Use macro to build the strnlen_user symbol

2014-03-26T22:09:13+00:00

Build the __strnlen_user symbol using a macro. In EVA mode we will need to use similar code to do the userspace load operations so it is better if we use a macro to avoid code duplications. Signed-off-by: Markos Chandras

MIPS: microMIPS: Optimise 'strnlen' core library function.

2013-05-09T15:55:20+00:00

Optimise 'strnlen' to use microMIPS instructions and/or optimisations for 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

MIPS: Whitespace cleanup.

2013-02-01T09:00:22+00:00

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

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

[MIPS] Eleminate local symbols from the symbol table.

2008-01-29T10:14:59+00:00

These symbols appear in oprofile output, stacktraces and similar but only make the output harder to read. Many identical symbol names such as "both_aligned" were also being used in multiple source files making it impossible to see which file actually was meant. So let's get rid of them. Signed-off-by: Ralf Baechle

kbuild: mips use generic asm-offsets.h support

2005-09-09T20:32:31+00:00

Removed obsolete stuff from arch makefile. mips had a special rule for generating asm-offsets.h so preserved it using an architecture specific hook in top-level Kbuild file. Renamed .h file to asm-offsets.h Signed-off-by: Sam Ravnborg

Linux-2.6.12-rc2

2005-04-16T22:20:36+00:00

Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!