diff options
author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
---|---|---|
committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/libgo/runtime/go-type-eface.c | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
download | toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.gz toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.bz2 toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.zip |
[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/libgo/runtime/go-type-eface.c')
-rw-r--r-- | gcc-4.8/libgo/runtime/go-type-eface.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gcc-4.8/libgo/runtime/go-type-eface.c b/gcc-4.8/libgo/runtime/go-type-eface.c new file mode 100644 index 000000000..cb3424b98 --- /dev/null +++ b/gcc-4.8/libgo/runtime/go-type-eface.c @@ -0,0 +1,59 @@ +/* go-type-eface.c -- hash and equality empty interface functions. + + Copyright 2010 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. */ + +#include "runtime.h" +#include "interface.h" +#include "go-type.h" + +/* A hash function for an empty interface. */ + +uintptr_t +__go_type_hash_empty_interface (const void *vval, + uintptr_t key_size __attribute__ ((unused))) +{ + const struct __go_empty_interface *val; + const struct __go_type_descriptor *descriptor; + uintptr_t size; + + val = (const struct __go_empty_interface *) vval; + descriptor = val->__type_descriptor; + if (descriptor == NULL) + return 0; + size = descriptor->__size; + if (__go_is_pointer_type (descriptor)) + return descriptor->__hashfn (&val->__object, size); + else + return descriptor->__hashfn (val->__object, size); +} + +/* An equality function for an empty interface. */ + +_Bool +__go_type_equal_empty_interface (const void *vv1, const void *vv2, + uintptr_t key_size __attribute__ ((unused))) +{ + const struct __go_empty_interface *v1; + const struct __go_empty_interface *v2; + const struct __go_type_descriptor* v1_descriptor; + const struct __go_type_descriptor* v2_descriptor; + + v1 = (const struct __go_empty_interface *) vv1; + v2 = (const struct __go_empty_interface *) vv2; + v1_descriptor = v1->__type_descriptor; + v2_descriptor = v2->__type_descriptor; + if (((uintptr_t) v1_descriptor & reflectFlags) != 0 + || ((uintptr_t) v2_descriptor & reflectFlags) != 0) + runtime_panicstring ("invalid interface value"); + if (v1_descriptor == NULL || v2_descriptor == NULL) + return v1_descriptor == v2_descriptor; + if (!__go_type_descriptors_equal (v1_descriptor, v2_descriptor)) + return 0; + if (__go_is_pointer_type (v1_descriptor)) + return v1->__object == v2->__object; + else + return v1_descriptor->__equalfn (v1->__object, v2->__object, + v1_descriptor->__size); +} |