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https://github.com/bytecodealliance/wasm-micro-runtime.git
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96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include "ems_gc_internal.h"
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#if BH_ENABLE_GC_VERIFY != 0
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/**
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* Set default value to prefix and suffix
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* @param hmu should not be NULL and should have been correctly initialized
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* (except prefix and suffix part)
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* @param tot_size is offered here because hmu_get_size can not be used
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* till now. tot_size should not be smaller than OBJ_EXTRA_SIZE.
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* For VO, tot_size should be equal to object total size.
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*/
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void
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hmu_init_prefix_and_suffix(hmu_t *hmu, gc_size_t tot_size,
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const char *file_name, int line_no)
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{
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gc_object_prefix_t *prefix = NULL;
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gc_object_suffix_t *suffix = NULL;
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gc_uint32 i = 0;
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bh_assert(hmu);
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bh_assert(hmu_get_ut(hmu) == HMU_WO || hmu_get_ut(hmu) == HMU_VO);
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bh_assert(tot_size >= OBJ_EXTRA_SIZE);
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bh_assert(!(tot_size & 7));
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bh_assert(hmu_get_ut(hmu) != HMU_VO || hmu_get_size(hmu) >= tot_size);
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prefix = (gc_object_prefix_t *)(hmu + 1);
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suffix =
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(gc_object_suffix_t *)((gc_uint8 *)hmu + tot_size - OBJ_SUFFIX_SIZE);
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prefix->file_name = file_name;
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prefix->line_no = line_no;
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prefix->size = tot_size;
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for (i = 0; i < GC_OBJECT_PREFIX_PADDING_CNT; i++) {
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prefix->padding[i] = GC_OBJECT_PADDING_VALUE;
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}
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for (i = 0; i < GC_OBJECT_SUFFIX_PADDING_CNT; i++) {
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suffix->padding[i] = GC_OBJECT_PADDING_VALUE;
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}
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}
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void
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hmu_verify(void *vheap, hmu_t *hmu)
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{
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#if BH_ENABLE_GC_CORRUPTION_CHECK != 0
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gc_heap_t *heap = (gc_heap_t *)vheap;
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#endif
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gc_object_prefix_t *prefix = NULL;
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gc_object_suffix_t *suffix = NULL;
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gc_uint32 i = 0;
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hmu_type_t ut;
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gc_size_t size = 0;
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int is_padding_ok = 1;
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bh_assert(hmu);
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ut = hmu_get_ut(hmu);
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bh_assert(hmu_is_ut_valid(ut));
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prefix = (gc_object_prefix_t *)(hmu + 1);
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size = prefix->size;
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suffix = (gc_object_suffix_t *)((gc_uint8 *)hmu + size - OBJ_SUFFIX_SIZE);
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if (ut == HMU_VO || ut == HMU_WO) {
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/* check padding*/
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for (i = 0; i < GC_OBJECT_PREFIX_PADDING_CNT; i++) {
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if (prefix->padding[i] != GC_OBJECT_PADDING_VALUE) {
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is_padding_ok = 0;
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break;
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}
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}
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for (i = 0; i < GC_OBJECT_SUFFIX_PADDING_CNT; i++) {
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if (suffix->padding[i] != GC_OBJECT_PADDING_VALUE) {
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is_padding_ok = 0;
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break;
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}
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}
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if (!is_padding_ok) {
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LOG_ERROR("Invalid padding for object created at %s:%d\n",
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(prefix->file_name ? prefix->file_name : ""),
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prefix->line_no);
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#if BH_ENABLE_GC_CORRUPTION_CHECK != 0
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heap->is_heap_corrupted = true;
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#endif
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}
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}
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}
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#endif /* end of BH_ENABLE_GC_VERIFY */
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