@@ -406,8 +406,50 @@
/* We don't yet support calling 32bit code from 64bit */
FFI_ASSERT(0);
#else
- ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
- cif->flags, rvalue, fn);
+ if (rvalue && (cif->rtype->type == FFI_TYPE_STRUCT
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ || cif->flags == FFI_TYPE_LONGDOUBLE
+#endif
+ ))
+ {
+ /* For v8, we need an "unimp" with size of returning struct */
+ /* behind "call", so we alloc some executable space for it. */
+ /* l7 is used, we need to make sure v8.S doesn't use %l7. */
+ unsigned int *call_struct = NULL;
+ ffi_closure_alloc(32, &call_struct);
+ if (call_struct)
+ {
+ unsigned long f = (unsigned long)fn;
+ call_struct[0] = 0xae10001f; /* mov %i7, %l7 */
+ call_struct[1] = 0xbe10000f; /* mov %o7, %i7 */
+ call_struct[2] = 0x03000000 | f >> 10; /* sethi %hi(fn), %g1 */
+ call_struct[3] = 0x9fc06000 | (f & 0x3ff); /* jmp %g1+%lo(fn), %o7 */
+ call_struct[4] = 0x01000000; /* nop */
+ if (cif->rtype->size < 0x7f)
+ call_struct[5] = cif->rtype->size; /* unimp */
+ else
+ call_struct[5] = 0x01000000; /* nop */
+ call_struct[6] = 0x81c7e008; /* ret */
+ call_struct[7] = 0xbe100017; /* mov %l7, %i7 */
+ asm volatile ("iflush %0; iflush %0+8; iflush %0+16; iflush %0+24" : :
+ "r" (call_struct) : "memory");
+ /* SPARC v8 requires 5 instructions for flush to be visible */
+ asm volatile ("nop; nop; nop; nop; nop");
+ ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
+ cif->flags, rvalue, call_struct);
+ ffi_closure_free(call_struct);
+ }
+ else
+ {
+ ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
+ cif->flags, rvalue, fn);
+ }
+ }
+ else
+ {
+ ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
+ cif->flags, rvalue, fn);
+ }
#endif
break;
case FFI_V9:
@@ -468,13 +510,13 @@
closure->fun = fun;
closure->user_data = user_data;
- /* Flush the Icache. FIXME: alignment isn't certain, assume 8 bytes */
+ /* Flush the Icache. closure is 8 bytes aligned */
#ifdef SPARC64
- asm volatile ("flush %0" : : "r" (closure) : "memory");
- asm volatile ("flush %0" : : "r" (((char *) closure) + 8) : "memory");
+ asm volatile ("flush %0; flush %0+8" : : "r" (closure) : "memory");
#else
- asm volatile ("iflush %0" : : "r" (closure) : "memory");
- asm volatile ("iflush %0" : : "r" (((char *) closure) + 8) : "memory");
+ asm volatile ("iflush %0; iflush %0+8" : : "r" (closure) : "memory");
+ /* SPARC v8 requires 5 instructions for flush to be visible */
+ asm volatile ("nop; nop; nop; nop; nop");
#endif
return FFI_OK;