sPAPR: Introduce rtas_ldq()

This introduces rtas_ldq() to load 64-bits parameter from continuous
two 4-bytes memory chunk of RTAS parameter buffer, to simplify the
code.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index d250967..cbe3463 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -489,6 +489,11 @@ static inline uint32_t rtas_ld(target_ulong phys, int n)
     return ldl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n));
 }
 
+static inline uint64_t rtas_ldq(target_ulong phys, int n)
+{
+    return (uint64_t)rtas_ld(phys, n) << 32 | rtas_ld(phys, n + 1);
+}
+
 static inline void rtas_st(target_ulong phys, int n, uint32_t val)
 {
     stl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n), val);