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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/cris/arch-v32/lib/spinlock.S | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
| download | FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.gz FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.bz2 FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.zip | |
dirty fix to merging
Diffstat (limited to 'arch/cris/arch-v32/lib/spinlock.S')
| -rw-r--r-- | arch/cris/arch-v32/lib/spinlock.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/cris/arch-v32/lib/spinlock.S b/arch/cris/arch-v32/lib/spinlock.S new file mode 100644 index 00000000..fe610b9d --- /dev/null +++ b/arch/cris/arch-v32/lib/spinlock.S @@ -0,0 +1,40 @@ +;; Core of the spinlock implementation +;; +;; Copyright (C) 2004 Axis Communications AB. +;; +;; Author: Mikael Starvik + + + .global cris_spin_lock + .type cris_spin_lock,@function + .global cris_spin_trylock + .type cris_spin_trylock,@function + + .text + +cris_spin_lock: + clearf p +1: test.b [$r10] + beq 1b + clearf p + ax + clear.b [$r10] + bcs 1b + clearf p + ret + nop + + .size cris_spin_lock, . - cris_spin_lock + +cris_spin_trylock: + clearf p +1: move.b [$r10], $r11 + ax + clear.b [$r10] + bcs 1b + clearf p + ret + movu.b $r11,$r10 + + .size cris_spin_trylock, . - cris_spin_trylock + |