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| author | Alex Auvolat <alex.auvolat@ens.fr> | 2014-12-04 10:43:58 +0100 |
|---|---|---|
| committer | Alex Auvolat <alex.auvolat@ens.fr> | 2014-12-04 10:43:58 +0100 |
| commit | 292e4141078d18993b1395820631503ac852eb3d (patch) | |
| tree | 3b3e5cb75d9bf3abb2639deedc247eba2cdeabe6 /kernel/l0/frame.c | |
| parent | d78a3d8be9c194554580cb3c73c1c5ebd0d82a9b (diff) | |
| download | kogata-292e4141078d18993b1395820631503ac852eb3d.tar.gz kogata-292e4141078d18993b1395820631503ac852eb3d.zip | |
Make paging work ! \o/
Diffstat (limited to 'kernel/l0/frame.c')
| -rw-r--r-- | kernel/l0/frame.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/l0/frame.c b/kernel/l0/frame.c index 1f16eaf..c646a48 100644 --- a/kernel/l0/frame.c +++ b/kernel/l0/frame.c @@ -4,8 +4,8 @@ // TODO: buddy allocator // this is a simple bitmap allocator -#define INDEX_FROM_BIT(a) (a/(8*4)) -#define OFFSET_FROM_BIT(a) (a%(8*4)) +#define INDEX_FROM_BIT(a) ((a)/(8*4)) +#define OFFSET_FROM_BIT(a) ((a)%(8*4)) static uint32_t *frame_bitset; static uint32_t nframes, nused_frames; @@ -54,9 +54,9 @@ uint32_t frame_alloc(size_t n) { } void frame_free(uint32_t base, size_t n) { - for (size_t x = 0; x < n; x++) { - uint32_t idx = INDEX_FROM_BIT(base + n); - uint32_t ofs = OFFSET_FROM_BIT(base + n); + for (size_t i = 0; i < n; i++) { + uint32_t idx = INDEX_FROM_BIT(base + i); + uint32_t ofs = OFFSET_FROM_BIT(base + i); if (frame_bitset[idx] & (0x1 << ofs)) { frame_bitset[idx] &= ~(0x1 << ofs); nused_frames--; |