diff --git a/hw/gt64xxx.c b/hw/gt64xxx.c
index fdb70b3eb2..65e16b2f75 100644
--- a/hw/gt64xxx.c
+++ b/hw/gt64xxx.c
@@ -1109,6 +1109,11 @@ PCIBus *pci_gt64120_init(qemu_irq *pic)
     GT64120State *s;
     PCIDevice *d;
 
+    (void)&pci_host_data_writeb; /* avoid warning */
+    (void)&pci_host_data_writew; /* avoid warning */
+    (void)&pci_host_data_readb; /* avoid warning */
+    (void)&pci_host_data_readw; /* avoid warning */
+
     s = qemu_mallocz(sizeof(GT64120State));
     s->pci = qemu_mallocz(sizeof(GT64120PCIState));
 
diff --git a/target-i386/exec.h b/target-i386/exec.h
index 8e2a553213..70fac64fc3 100644
--- a/target-i386/exec.h
+++ b/target-i386/exec.h
@@ -419,12 +419,12 @@ static inline void helper_fstt(CPU86_LDouble f, target_ulong ptr)
 
 static inline CPU86_LDouble helper_fldt(target_ulong ptr)
 {
-    return *(CPU86_LDouble *)ptr;
+    return *(CPU86_LDouble *)(unsigned long)ptr;
 }
 
 static inline void helper_fstt(CPU86_LDouble f, target_ulong ptr)
 {
-    *(CPU86_LDouble *)ptr = f;
+    *(CPU86_LDouble *)(unsigned long)ptr = f;
 }
 
 #else
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index 13c16618fd..09e9c8bf40 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -433,7 +433,7 @@ void helper_st_asi(int asi, int size)
             break;
         case 0x01c00a04: /* MXCC control register */
             if (size == 4)
-                env->mxccregs[3] = (env->mxccregs[0xa] & 0xffffffff00000000) | T1;
+                env->mxccregs[3] = (env->mxccregs[0xa] & 0xffffffff00000000ULL) | T1;
             else
                 DPRINTF_MXCC("%08x: unimplemented access size: %d\n", T0, size);
             break;