File qemu-cvs-alsa_bitfield.patch of Package qemu

File qemu-cvs-alsa_bitfield.patch of Package qemu (Revision f0605cf5b7ad0b7e2a028855125e1e21)

Currently displaying revision f0605cf5b7ad0b7e2a028855125e1e21, show latest

Index: qemu/thunk.h
================================================================================
--- qemu/thunk.c
+++ qemu/thunk.c
@@ -40,6 +40,7 @@
     case TYPE_CHAR:
     case TYPE_SHORT:
     case TYPE_INT:
+    case TYPE_INTBITFIELD:
     case TYPE_LONGLONG:
     case TYPE_ULONGLONG:
     case TYPE_LONG:
@@ -132,6 +133,26 @@
     case TYPE_INT:
         *(uint32_t *)dst = tswap32(*(uint32_t *)src);
         break;
+    case TYPE_INTBITFIELD:
+#if defined(TARGET_I386) && defined(__powerpc__)
+        /* powerpc uses the MSB, whereas i386 uses the LSB 
+         * to store the first bit in a field */
+        {
+	    unsigned char byte = *(uint8_t *)src;
+            *(uint8_t *)dst  = ((byte >> 7) & 1)
+		             | ((byte >> 5) & 2)
+			     | ((byte >> 3) & 4)
+			     | ((byte >> 1) & 8)
+			     | ((byte << 1) & 16)
+			     | ((byte << 3) & 32)
+			     | ((byte << 5) & 64)
+			     | ((byte << 7) & 128);
+	    /* FIXME: implement for bitfields > 1 byte and other archs */
+        }
+#else
+        *(uint32_t *)dst = tswap32(*(uint32_t *)src);
+#endif
+	break;
     case TYPE_LONGLONG:
     case TYPE_ULONGLONG:
         *(uint64_t *)dst = tswap64(*(uint64_t *)src);
--- qemu/thunk.h
+++ qemu/thunk.h
@@ -38,6 +38,7 @@
     TYPE_PTR,
     TYPE_ARRAY,
     TYPE_STRUCT,
+    TYPE_INTBITFIELD,
 } argtype;
 
 #define MK_PTR(type) TYPE_PTR, type
@@ -87,6 +88,7 @@
     case TYPE_SHORT:
         return 2;
     case TYPE_INT:
+    case TYPE_INTBITFIELD:
         return 4;
     case TYPE_LONGLONG:
     case TYPE_ULONGLONG:
@@ -124,6 +126,7 @@
     case TYPE_SHORT:
         return 2;
     case TYPE_INT:
+    case TYPE_INTBITFIELD:
         return 4;
     case TYPE_LONGLONG:
     case TYPE_ULONGLONG: