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/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "wasm-binary-reader-opcnt.h"
#include <assert.h>
#include <inttypes.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include "wasm-allocator.h"
#include "wasm-binary-reader.h"
#include "wasm-common.h"
typedef struct Context {
WasmAllocator* allocator;
WasmOpcntData* opcnt_data;
} Context;
static WasmResult add_int_counter_value(struct WasmAllocator* allocator,
WasmIntCounterVector* vec,
intmax_t value) {
size_t i;
for (i = 0; i < vec->size; ++i) {
if (vec->data[i].value == value) {
++vec->data[i].count;
return WASM_OK;
}
}
WasmIntCounter counter;
counter.value = value;
counter.count = 1;
wasm_append_int_counter_value(allocator, vec, &counter);
return WASM_OK;
}
static WasmResult add_int_pair_counter_value(struct WasmAllocator* allocator,
WasmIntPairCounterVector* vec,
intmax_t first, intmax_t second) {
size_t i;
for (i = 0; i < vec->size; ++i) {
if (vec->data[i].first == first && vec->data[i].second == second) {
++vec->data[i].count;
return WASM_OK;
}
}
WasmIntPairCounter counter;
counter.first = first;
counter.second = second;
counter.count = 1;
wasm_append_int_pair_counter_value(allocator, vec, &counter);
return WASM_OK;
}
static WasmResult on_opcode(WasmBinaryReaderContext* context,
WasmOpcode opcode) {
Context* ctx = context->user_data;
WasmIntCounterVector* opcnt_vec = &ctx->opcnt_data->opcode_vec;
while (opcode >= opcnt_vec->size) {
WasmIntCounter Counter;
Counter.value = opcnt_vec->size;
Counter.count = 0;
wasm_append_int_counter_value(ctx->opcnt_data->allocator,
opcnt_vec, &Counter);
}
++opcnt_vec->data[opcode].count;
return WASM_OK;
}
static WasmResult on_i32_const_expr(uint32_t value, void* user_data) {
Context* ctx = user_data;
return add_int_counter_value(ctx->opcnt_data->allocator,
&ctx->opcnt_data->i32_const_vec, (int32_t)value);
}
static WasmResult on_get_local_expr(uint32_t local_index, void* user_data) {
Context* ctx = user_data;
return add_int_counter_value(ctx->opcnt_data->allocator,
&ctx->opcnt_data->get_local_vec, local_index);
}
static WasmResult on_set_local_expr(uint32_t local_index, void* user_data) {
Context* ctx = user_data;
return add_int_counter_value(ctx->opcnt_data->allocator,
&ctx->opcnt_data->set_local_vec, local_index);
}
static WasmResult on_tee_local_expr(uint32_t local_index, void* user_data) {
Context* ctx = user_data;
return add_int_counter_value(ctx->opcnt_data->allocator,
&ctx->opcnt_data->tee_local_vec, local_index);
}
static WasmResult on_load_expr(WasmOpcode opcode,
uint32_t alignment_log2,
uint32_t offset,
void* user_data) {
Context* ctx = user_data;
if (opcode == WASM_OPCODE_I32_LOAD)
return add_int_pair_counter_value(ctx->opcnt_data->allocator,
&ctx->opcnt_data->i32_load_vec,
alignment_log2, offset);
return WASM_OK;
}
static WasmResult on_store_expr(WasmOpcode opcode,
uint32_t alignment_log2,
uint32_t offset,
void* user_data) {
Context* ctx = user_data;
if (opcode == WASM_OPCODE_I32_STORE)
return add_int_pair_counter_value(ctx->opcnt_data->allocator,
&ctx->opcnt_data->i32_store_vec,
alignment_log2, offset);
return WASM_OK;
}
static void on_error(WasmBinaryReaderContext* ctx, const char* message) {
wasm_default_binary_error_callback(ctx->offset, message, ctx->user_data);
}
static WasmBinaryReader s_binary_reader = {
.user_data = NULL,
.on_error = on_error,
.on_opcode = on_opcode,
.on_i32_const_expr = on_i32_const_expr,
.on_get_local_expr = on_get_local_expr,
.on_set_local_expr = on_set_local_expr,
.on_tee_local_expr = on_tee_local_expr,
.on_load_expr = on_load_expr,
.on_store_expr = on_store_expr
};
void wasm_init_opcnt_data(struct WasmAllocator* allocator,
WasmOpcntData* data) {
WASM_ZERO_MEMORY(*data);
data->allocator = allocator;
}
void wasm_destroy_opcnt_data(struct WasmAllocator* allocator,
WasmOpcntData* data) {
assert(allocator == data->allocator);
wasm_destroy_int_counter_vector(allocator, &data->opcode_vec);
wasm_destroy_int_counter_vector(allocator, &data->i32_const_vec);
wasm_destroy_int_counter_vector(allocator, &data->get_local_vec);
wasm_destroy_int_pair_counter_vector(allocator, &data->i32_load_vec);
}
WasmResult wasm_read_binary_opcnt(struct WasmAllocator* allocator,
const void* data,
size_t size,
const struct WasmReadBinaryOptions* options,
WasmOpcntData* opcnt_data) {
Context ctx;
WASM_ZERO_MEMORY(ctx);
ctx.allocator = allocator;
ctx.opcnt_data = opcnt_data;
WasmBinaryReader reader;
WASM_ZERO_MEMORY(reader);
reader = s_binary_reader;
reader.user_data = &ctx;
return wasm_read_binary(allocator, data, size, &reader, 1, options);
}
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