sdcard: Use the ldst API

The load/store API will ease further code movement.

Per the Physical Layer Simplified Spec. "3.6 Bus Protocol":

  "In the CMD line the Most Significant Bit (MSB) is transmitted
   first, the Least Significant Bit (LSB) is the last."

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 4 insertions, 7 deletions

diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c
index 1cc94dbfdf..3ad7e925c5 100644
--- a/hw/sd/pl181.c
+++ b/hw/sd/pl181.c
@@ -182,23 +182,20 @@ static void pl181_send_command(PL181State *s)
     if (rlen < 0)
         goto error;
     if (s->cmd & PL181_CMD_RESPONSE) {
-#define RWORD(n) (((uint32_t)response[n] << 24) | (response[n + 1] << 16) \
-                  | (response[n + 2] << 8) | response[n + 3])
         if (rlen == 0 || (rlen == 4 && (s->cmd & PL181_CMD_LONGRESP)))
             goto error;
         if (rlen != 4 && rlen != 16)
             goto error;
-        s->response[0] = RWORD(0);
+        s->response[0] = ldl_be_p(&response[0]);
         if (rlen == 4) {
             s->response[1] = s->response[2] = s->response[3] = 0;
         } else {
-            s->response[1] = RWORD(4);
-            s->response[2] = RWORD(8);
-            s->response[3] = RWORD(12) & ~1;
+            s->response[1] = ldl_be_p(&response[4]);
+            s->response[2] = ldl_be_p(&response[8]);
+            s->response[3] = ldl_be_p(&response[12]) & ~1;
         }
         DPRINTF("Response received\n");
         s->status |= PL181_STATUS_CMDRESPEND;
-#undef RWORD
     } else {
         DPRINTF("Command sent\n");
         s->status |= PL181_STATUS_CMDSENT;