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| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-01-02 17:19:49 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:13 +0100 |
| commit | c48be43eb5248ff96dacda58f9e51ee8bfd058ac (patch) | |
| tree | ecb47c1da760cfd105a1ae5fb9a6ac8862246f48 /arch/mips/lib/strnlen_user.S | |
| parent | MIPS: traps: Set correct address limit for breakpoints and traps (diff) | |
| download | linux-c48be43eb5248ff96dacda58f9e51ee8bfd058ac.tar.xz linux-c48be43eb5248ff96dacda58f9e51ee8bfd058ac.zip | |
MIPS: lib: strnlen_user: Use macro to build the strnlen_user symbol
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 <markos.chandras@imgtec.com>
Diffstat (limited to 'arch/mips/lib/strnlen_user.S')
| -rw-r--r-- | arch/mips/lib/strnlen_user.S | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/mips/lib/strnlen_user.S b/arch/mips/lib/strnlen_user.S index fcacea5e61f1..44221602ce1c 100644 --- a/arch/mips/lib/strnlen_user.S +++ b/arch/mips/lib/strnlen_user.S @@ -25,22 +25,26 @@ * bytes. There's nothing secret there. On 64-bit accessing beyond * the maximum is a tad hairier ... */ -LEAF(__strnlen_user_asm) + .macro __BUILD_STRNLEN_ASM func +LEAF(__strnlen_\func\()_asm) LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? and v0, a0 - bnez v0, .Lfault + bnez v0, .Lfault\@ -FEXPORT(__strnlen_user_nocheck_asm) +FEXPORT(__strnlen_\func\()_nocheck_asm) move v0, a0 PTR_ADDU a1, a0 # stop pointer 1: beq v0, a1, 1f # limit reached? - EX(lb, t0, (v0), .Lfault) + EX(lb, t0, (v0), .Lfault\@) PTR_ADDIU v0, 1 bnez t0, 1b 1: PTR_SUBU v0, a0 jr ra - END(__strnlen_user_asm) + END(__strnlen_\func\()_asm) -.Lfault: +.Lfault\@: move v0, zero jr ra + .endm + +__BUILD_STRNLEN_ASM user |