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envelope-from=alxndr@bu.edu; helo=NAM11-DM6-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 01:57:41 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander Bulekov , f4bug@amsat.org, darren.kenny@oracle.com, bsd@redhat.com, stefanha@redhat.com, Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Alexander Bulekov --- exec.c | 17 ++++++++++++++++- include/exec/memory.h | 8 ++++++++ include/exec/memory_ldst_cached.inc.h | 9 +++++++++ include/sysemu/dma.h | 5 ++++- memory_ldst.inc.c | 12 ++++++++++++ 5 files changed, 49 insertions(+), 2 deletions(-) diff --git a/exec.c b/exec.c index be4be2df3a..2ed724ab54 100644 --- a/exec.c +++ b/exec.c @@ -3247,7 +3247,10 @@ MemTxResult address_space_read_full(AddressSpace *as, hwaddr addr, { MemTxResult result = MEMTX_OK; FlatView *fv; - +#ifdef CONFIG_FUZZ + if(as->root == get_system_memory()) + dma_read_cb(addr, len); +#endif if (len > 0) { RCU_READ_LOCK_GUARD(); fv = address_space_to_flatview(as); @@ -3556,6 +3559,10 @@ void *address_space_map(AddressSpace *as, } *plen = l; +#ifdef CONFIG_FUZZ + if(as->root == get_system_memory() && !is_write) + dma_read_cb(addr, *plen); +#endif return bounce.buffer; } @@ -3563,6 +3570,10 @@ void *address_space_map(AddressSpace *as, memory_region_ref(mr); *plen = flatview_extend_translation(fv, addr, len, mr, xlat, l, is_write, attrs); +#ifdef CONFIG_FUZZ + if(as->root == get_system_memory() && !is_write) + dma_read_cb(addr, *plen); +#endif ptr = qemu_ram_ptr_length(mr->ram_block, xlat, plen, true); return ptr; @@ -3635,6 +3646,10 @@ int64_t address_space_cache_init(MemoryRegionCache *cache, assert(len > 0); +#ifdef CONFIG_FUZZ + if(as->root == get_system_memory() && !is_write) + dma_read_cb(addr, len); +#endif l = len; cache->fv = address_space_get_flatview(as); d = flatview_to_dispatch(cache->fv); diff --git a/include/exec/memory.h b/include/exec/memory.h index 3e00cdbbfa..e9178b3e0a 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -49,6 +49,10 @@ extern bool global_dirty_log; +#ifdef CONFIG_FUZZ +extern void dma_read_cb(size_t addr, size_t len); +#endif + typedef struct MemoryRegionOps MemoryRegionOps; typedef struct MemoryRegionMmio MemoryRegionMmio; @@ -2427,6 +2431,10 @@ address_space_read_cached(MemoryRegionCache *cache, hwaddr addr, void *buf, hwaddr len) { assert(addr < cache->len && len <= cache->len - addr); + +#ifdef CONFIG_FUZZ + dma_read_cb(addr, len); +#endif if (likely(cache->ptr)) { memcpy(buf, cache->ptr + addr, len); } else { diff --git a/include/exec/memory_ldst_cached.inc.h b/include/exec/memory_ldst_cached.inc.h index fd4bbb40e7..dc3ce14a97 100644 --- a/include/exec/memory_ldst_cached.inc.h +++ b/include/exec/memory_ldst_cached.inc.h @@ -28,6 +28,9 @@ static inline uint32_t ADDRESS_SPACE_LD_CACHED(l)(MemoryRegionCache *cache, hwaddr addr, MemTxAttrs attrs, MemTxResult *result) { assert(addr < cache->len && 4 <= cache->len - addr); +#ifdef CONFIG_FUZZ + dma_read_cb(cache->xlat + addr, 4); +#endif if (likely(cache->ptr)) { return LD_P(l)(cache->ptr + addr); } else { @@ -39,6 +42,9 @@ static inline uint64_t ADDRESS_SPACE_LD_CACHED(q)(MemoryRegionCache *cache, hwaddr addr, MemTxAttrs attrs, MemTxResult *result) { assert(addr < cache->len && 8 <= cache->len - addr); +#ifdef CONFIG_FUZZ + dma_read_cb(cache->xlat + addr, 8); +#endif if (likely(cache->ptr)) { return LD_P(q)(cache->ptr + addr); } else { @@ -50,6 +56,9 @@ static inline uint32_t ADDRESS_SPACE_LD_CACHED(uw)(MemoryRegionCache *cache, hwaddr addr, MemTxAttrs attrs, MemTxResult *result) { assert(addr < cache->len && 2 <= cache->len - addr); +#ifdef CONFIG_FUZZ + dma_read_cb(cache->xlat + addr, 2); +#endif if (likely(cache->ptr)) { return LD_P(uw)(cache->ptr + addr); } else { diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index 80c5bc3e02..f32d7db7aa 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -105,8 +105,11 @@ static inline int dma_memory_rw(AddressSpace *as, dma_addr_t addr, void *buf, dma_addr_t len, DMADirection dir) { +#ifdef CONFIG_FUZZ + if (dir == DMA_DIRECTION_TO_DEVICE) + dma_read_cb(addr, len); +#endif dma_barrier(as, dir); - return dma_memory_rw_relaxed(as, addr, buf, len, dir); } diff --git a/memory_ldst.inc.c b/memory_ldst.inc.c index c54aee4a95..1935436aff 100644 --- a/memory_ldst.inc.c +++ b/memory_ldst.inc.c @@ -42,6 +42,9 @@ static inline uint32_t glue(address_space_ldl_internal, SUFFIX)(ARG1_DECL, MO_32 | devend_memop(endian), attrs); } else { /* RAM case */ +#ifdef CONFIG_FUZZ + dma_read_cb(addr, 4); +#endif ptr = qemu_map_ram_ptr(mr->ram_block, addr1); switch (endian) { case DEVICE_LITTLE_ENDIAN: @@ -110,6 +113,9 @@ static inline uint64_t glue(address_space_ldq_internal, SUFFIX)(ARG1_DECL, MO_64 | devend_memop(endian), attrs); } else { /* RAM case */ +#ifdef CONFIG_FUZZ + dma_read_cb(addr, 8); +#endif ptr = qemu_map_ram_ptr(mr->ram_block, addr1); switch (endian) { case DEVICE_LITTLE_ENDIAN: @@ -175,6 +181,9 @@ uint32_t glue(address_space_ldub, SUFFIX)(ARG1_DECL, r = memory_region_dispatch_read(mr, addr1, &val, MO_8, attrs); } else { /* RAM case */ +#ifdef CONFIG_FUZZ + dma_read_cb(addr, 1); +#endif ptr = qemu_map_ram_ptr(mr->ram_block, addr1); val = ldub_p(ptr); r = MEMTX_OK; @@ -212,6 +221,9 @@ static inline uint32_t glue(address_space_lduw_internal, SUFFIX)(ARG1_DECL, MO_16 | devend_memop(endian), attrs); } else { /* RAM case */ +#ifdef CONFIG_FUZZ + dma_read_cb(addr, 2); +#endif ptr = qemu_map_ram_ptr(mr->ram_block, addr1); switch (endian) { case DEVICE_LITTLE_ENDIAN: