diff options
Diffstat (limited to 'sim/bfin/dv-bfin_mmu.c')
| -rw-r--r-- | sim/bfin/dv-bfin_mmu.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sim/bfin/dv-bfin_mmu.c b/sim/bfin/dv-bfin_mmu.c index a3d5ba1..ce8cc9f 100644 --- a/sim/bfin/dv-bfin_mmu.c +++ b/sim/bfin/dv-bfin_mmu.c @@ -101,6 +101,10 @@ bfin_mmu_io_write_buffer (struct hw *me, const void *source, bu32 value; bu32 *valuep; + /* Invalid access mode is higher priority than missing register. */ + if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, true)) + return 0; + value = dv_load_4 (source); mmr_off = addr - mmu->base; @@ -159,7 +163,7 @@ bfin_mmu_io_write_buffer (struct hw *me, const void *source, break; default: dv_bfin_mmr_invalid (me, addr, nr_bytes, true); - break; + return 0; } return nr_bytes; @@ -173,6 +177,10 @@ bfin_mmu_io_read_buffer (struct hw *me, void *dest, bu32 mmr_off; bu32 *valuep; + /* Invalid access mode is higher priority than missing register. */ + if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, false)) + return 0; + mmr_off = addr - mmu->base; valuep = (void *)((unsigned long)mmu + mmr_base() + mmr_off); @@ -200,9 +208,8 @@ bfin_mmu_io_read_buffer (struct hw *me, void *dest, dv_store_4 (dest, *valuep); break; default: - while (1) /* Core MMRs -> exception -> doesn't return. */ - dv_bfin_mmr_invalid (me, addr, nr_bytes, false); - break; + dv_bfin_mmr_invalid (me, addr, nr_bytes, false); + return 0; } return nr_bytes; |