gcc/libgo/runtime/go-construct-map.c
Ian Lance Taylor c2047754c3 libgo: update to Go 1.8 release candidate 1
Compiler changes:
      * Change map assignment to use mapassign and assign value directly.
      * Change string iteration to use decoderune, faster for ASCII strings.
      * Change makeslice to take int, and use makeslice64 for larger values.
      * Add new noverflow field to hmap struct used for maps.
    
    Unresolved problems, to be fixed later:
      * Commented out test in go/types/sizes_test.go that doesn't compile.
      * Commented out reflect.TestStructOf test for padding after zero-sized field.
    
    Reviewed-on: https://go-review.googlesource.com/35231

gotools/:
	Updates for Go 1.8rc1.
	* Makefile.am (go_cmd_go_files): Add bug.go.
	(s-zdefaultcc): Write defaultPkgConfig.
	* Makefile.in: Rebuild.

From-SVN: r244456
2017-01-14 00:05:42 +00:00

44 lines
1.1 KiB
C

/* go-construct-map.c -- construct a map from an initializer.
Copyright 2009 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 <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include "runtime.h"
#include "go-type.h"
extern void *makemap (const struct __go_map_type *, int64_t hint,
void *, void *)
__asm__ (GOSYM_PREFIX "runtime.makemap");
extern void *mapassign (const struct __go_map_type *, void *hmap,
const void *key)
__asm__ (GOSYM_PREFIX "runtime.mapassign");
void *
__go_construct_map (const struct __go_map_type *type,
uintptr_t count, uintptr_t entry_size,
uintptr_t val_offset, const void *ventries)
{
void *ret;
const unsigned char *entries;
uintptr_t i;
void *p;
ret = makemap(type, (int64_t) count, NULL, NULL);
entries = (const unsigned char *) ventries;
for (i = 0; i < count; ++i)
{
p = mapassign (type, ret, entries);
typedmemmove (type->__val_type, p, entries + val_offset);
entries += entry_size;
}
return ret;
}