4a14082645
Permit putting structs with anonymous and empty fields in the C header
file runtime.inc that is used to build the C runtime code. This is
required for upcoming 1.13 support, as the m struct has picked up an
anonymous field.
Doing this lets the C header contain all the type descriptor structs,
so start using those in the C code. This cuts the number of copies of
type descriptor definitions from 3 to 2.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/192343
From-SVN: r275227
41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/* go-construct-map.c -- construct a map from an initializer.
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Copyright 2009 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file. */
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "runtime.h"
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extern void *makemap (const struct maptype *, intgo hint, void *)
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__asm__ (GOSYM_PREFIX "runtime.makemap");
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extern void *mapassign (const struct maptype *, void *hmap, const void *key)
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__asm__ (GOSYM_PREFIX "runtime.mapassign");
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void *
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__go_construct_map (const struct maptype *type, uintptr_t count,
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uintptr_t entry_size, uintptr_t val_offset,
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const void *ventries)
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{
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void *ret;
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const unsigned char *entries;
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uintptr_t i;
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void *p;
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ret = makemap(type, (intgo) count, NULL);
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entries = (const unsigned char *) ventries;
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for (i = 0; i < count; ++i)
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{
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p = mapassign (type, ret, entries);
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typedmemmove (type->elem, p, entries + val_offset);
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entries += entry_size;
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}
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return ret;
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}
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