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| author | Edgar E. Iglesias <edgar.iglesias@gmail.com> | 2010-07-05 10:15:10 +0200 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@gmail.com> | 2010-07-05 10:15:10 +0200 |
| commit | 253248a3beb2440561bb28b48292ead9c2fd157f (patch) | |
| tree | 6baa2684e9d276d100f3a1609285493286153b9c /target-cris | |
| parent | 08af49da7e3c3ed72cdffe3d43a6618165406f34 (diff) | |
| download | qemu-253248a3beb2440561bb28b48292ead9c2fd157f.zip qemu-253248a3beb2440561bb28b48292ead9c2fd157f.tar.gz qemu-253248a3beb2440561bb28b48292ead9c2fd157f.tar.bz2 | |
cris: Break out rand LFSR update into a separate func.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@axis.com>
Diffstat (limited to 'target-cris')
| -rw-r--r-- | target-cris/mmu.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/target-cris/mmu.c b/target-cris/mmu.c index d09e921..07967dd 100644 --- a/target-cris/mmu.c +++ b/target-cris/mmu.c @@ -55,6 +55,17 @@ static inline unsigned int compute_polynom(unsigned int sr) return f; } +static void cris_mmu_update_rand_lfsr(CPUState *env) +{ + unsigned int f; + + /* Update lfsr at every fault. */ + f = compute_polynom(env->mmu_rand_lfsr); + env->mmu_rand_lfsr >>= 1; + env->mmu_rand_lfsr |= (f << 15); + env->mmu_rand_lfsr &= 0xffff; +} + static inline int cris_mmu_enabled(uint32_t rw_gc_cfg) { return (rw_gc_cfg & 12) != 0; @@ -251,14 +262,8 @@ static int cris_mmu_translate_page(struct cris_mmu_result *res, } if (!match) { - unsigned int f; - - /* Update lfsr at every fault. */ - f = compute_polynom(env->mmu_rand_lfsr); - env->mmu_rand_lfsr >>= 1; - env->mmu_rand_lfsr |= (f << 15); - env->mmu_rand_lfsr &= 0xffff; - + cris_mmu_update_rand_lfsr(env); + /* Compute index. */ idx = vpage & 15; |