[PATCH] softmmu/memory: use memcpy for multi-byte accesses

[Patrick Venture <venture@google.com>]

Avoids unaligned pointer issues.

Reviewed-by: Chris Rauer <crauer@google.com>
Reviewed-by: Peter Foley <pefoley@google.com>
Signed-off-by: Patrick Venture <venture@google.com>
---
 system/memory.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/system/memory.c b/system/memory.c
index 304fa843ea..02c97d5187 100644
--- a/system/memory.c
+++ b/system/memory.c
@@ -1343,16 +1343,16 @@ static uint64_t memory_region_ram_device_read(void *opaque,
 
     switch (size) {
     case 1:
-        data = *(uint8_t *)(mr->ram_block->host + addr);
+        memcpy(&data, mr->ram_block->host + addr, sizeof(uint8_t));
         break;
     case 2:
-        data = *(uint16_t *)(mr->ram_block->host + addr);
+        memcpy(&data, mr->ram_block->host + addr, sizeof(uint16_t));
         break;
     case 4:
-        data = *(uint32_t *)(mr->ram_block->host + addr);
+        memcpy(&data, mr->ram_block->host + addr, sizeof(uint32_t));
         break;
     case 8:
-        data = *(uint64_t *)(mr->ram_block->host + addr);
+        memcpy(&data, mr->ram_block->host + addr, sizeof(uint64_t));
         break;
     }
 
@@ -1370,16 +1370,16 @@ static void memory_region_ram_device_write(void *opaque, hwaddr addr,
 
     switch (size) {
     case 1:
-        *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data;
+        memcpy(mr->ram_block->host + addr, &data, sizeof(uint8_t));
         break;
     case 2:
-        *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data;
+        memcpy(mr->ram_block->host + addr, &data, sizeof(uint16_t));
         break;
     case 4:
-        *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data;
+        memcpy(mr->ram_block->host + addr, &data, sizeof(uint32_t));
         break;
     case 8:
-        *(uint64_t *)(mr->ram_block->host + addr) = data;
+        memcpy(mr->ram_block->host + addr, &data, sizeof(uint64_t));
         break;
     }
 }
-- 
2.43.0.rc0.421.g78406f8d94-goog