exec: just use io_mem_read/io_mem_write for 8-byte I/O accesses

The memory API is able to split it in two 4-byte accesses.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 1 insertions, 7 deletions

diff --git a/exec.c b/exec.c
index 453946e..878f021 100644
--- a/exec.c
+++ b/exec.c
@@ -2263,13 +2263,7 @@ static inline uint64_t ldq_phys_internal(hwaddr addr,
                                       false);
     if (l < 8 || !memory_access_is_direct(section->mr, false)) {
         /* I/O case */
-#ifdef TARGET_WORDS_BIGENDIAN
-        val = io_mem_read(section->mr, addr1, 4) << 32;
-        val |= io_mem_read(section->mr, addr1 + 4, 4);
-#else
-        val = io_mem_read(section->mr, addr1, 4);
-        val |= io_mem_read(section->mr, addr1 + 4, 4) << 32;
-#endif
+        val = io_mem_read(section->mr, addr1, 8);
 #if defined(TARGET_WORDS_BIGENDIAN)
         if (endian == DEVICE_LITTLE_ENDIAN) {
             val = bswap64(val);