diff options
author | Markos Chandras <markos.chandras@imgtec.com> | 2014-01-02 10:55:58 -0500 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 18:09:13 -0400 |
commit | 5cc494972adbaeff08a1b7544acaa608c68cd527 (patch) | |
tree | d8f0f46710258c6aa70a7b4102cd11686fba603e /arch/mips/lib | |
parent | 4968db4b9c4528b097ab4e549c4e0d0420dd1efc (diff) |
MIPS: lib: strlen_user: Use macro to build the strlen_user symbol
Build the __strlen_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')
-rw-r--r-- | arch/mips/lib/strlen_user.S | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/mips/lib/strlen_user.S b/arch/mips/lib/strlen_user.S index e362dcdc69d1..6e8bdb373213 100644 --- a/arch/mips/lib/strlen_user.S +++ b/arch/mips/lib/strlen_user.S | |||
@@ -22,19 +22,23 @@ | |||
22 | * | 22 | * |
23 | * Return 0 for error | 23 | * Return 0 for error |
24 | */ | 24 | */ |
25 | LEAF(__strlen_user_asm) | 25 | .macro __BUILD_STRLEN_ASM func |
26 | LEAF(__strlen_\func\()_asm) | ||
26 | LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? | 27 | LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? |
27 | and v0, a0 | 28 | and v0, a0 |
28 | bnez v0, .Lfault | 29 | bnez v0, .Lfault\@ |
29 | 30 | ||
30 | FEXPORT(__strlen_user_nocheck_asm) | 31 | FEXPORT(__strlen_\func\()_nocheck_asm) |
31 | move v0, a0 | 32 | move v0, a0 |
32 | 1: EX(lbu, v1, (v0), .Lfault) | 33 | 1: EX(lbu, v1, (v0), .Lfault\@) |
33 | PTR_ADDIU v0, 1 | 34 | PTR_ADDIU v0, 1 |
34 | bnez v1, 1b | 35 | bnez v1, 1b |
35 | PTR_SUBU v0, a0 | 36 | PTR_SUBU v0, a0 |
36 | jr ra | 37 | jr ra |
37 | END(__strlen_user_asm) | 38 | END(__strlen_\func\()_asm) |
38 | 39 | ||
39 | .Lfault: move v0, zero | 40 | .Lfault\@: move v0, zero |
40 | jr ra | 41 | jr ra |
42 | .endm | ||
43 | |||
44 | __BUILD_STRLEN_ASM user | ||