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| author | Alexis211 <alexis211@gmail.com> | 2010-08-10 20:39:57 +0200 |
|---|---|---|
| committer | Alexis211 <alexis211@gmail.com> | 2010-08-10 20:39:57 +0200 |
| commit | f81bf65484fa8c81a1886f456c71f1e6eebe84e9 (patch) | |
| tree | 146f304d8de8828003edd548df22cca581044017 /src/kernel/lib/mutex.c | |
| parent | 0ec0ca40a4fedfe97c49903a329b2a9ad2e22d03 (diff) | |
| download | TCE-f81bf65484fa8c81a1886f456c71f1e6eebe84e9.tar.gz TCE-f81bf65484fa8c81a1886f456c71f1e6eebe84e9.zip | |
Added a lot of comments in kernel code. A bit of cleaning too.
Diffstat (limited to 'src/kernel/lib/mutex.c')
| -rw-r--r-- | src/kernel/lib/mutex.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/kernel/lib/mutex.c b/src/kernel/lib/mutex.c index f3ed11f..2664eb0 100644 --- a/src/kernel/lib/mutex.c +++ b/src/kernel/lib/mutex.c @@ -1,6 +1,7 @@ #include "mutex.h" #include <task/task.h> +/* Internal use only. This function is atomic, meaning it cannot be interrupted by a system task switch. */ static uint32_t atomic_exchange(uint32_t* ptr, uint32_t newval) { uint32_t r; asm volatile("xchg (%%ecx), %%eax" : "=a"(r) : "c"(ptr), "a"(newval)); |