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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 "src/common.h"
#include <cassert>
#include <climits>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <sys/types.h>
#include <sys/stat.h>
#if COMPILER_IS_MSVC
#include <fcntl.h>
#include <io.h>
#include <stdlib.h>
#define PATH_MAX _MAX_PATH
#define stat _stat
#define S_IFREG _S_IFREG
#endif
namespace wabt {
Reloc::Reloc(RelocType type, Offset offset, Index index, int32_t addend)
: type(type), offset(offset), index(index), addend(addend) {}
const char* g_kind_name[] = {"func", "table", "memory", "global", "event"};
WABT_STATIC_ASSERT(WABT_ARRAY_SIZE(g_kind_name) == kExternalKindCount);
const char* g_reloc_type_name[] = {
"R_WASM_FUNCTION_INDEX_LEB", "R_WASM_TABLE_INDEX_SLEB",
"R_WASM_TABLE_INDEX_I32", "R_WASM_MEMORY_ADDR_LEB",
"R_WASM_MEMORY_ADDR_SLEB", "R_WASM_MEMORY_ADDR_I32",
"R_WASM_TYPE_INDEX_LEB", "R_WASM_GLOBAL_INDEX_LEB",
"R_WASM_FUNCTION_OFFSET_I32", "R_WASM_SECTION_OFFSET_I32",
"R_WASM_EVENT_INDEX_LEB", "R_WASM_MEMORY_ADDR_REL_SLEB",
"R_WASM_TABLE_INDEX_REL_SLEB",
};
WABT_STATIC_ASSERT(WABT_ARRAY_SIZE(g_reloc_type_name) == kRelocTypeCount);
Result ReadFile(string_view filename, std::vector<uint8_t>* out_data) {
std::string filename_str = filename.to_string();
const char* filename_cstr = filename_str.c_str();
struct stat statbuf;
if (stat(filename_cstr, &statbuf) < 0) {
perror("stat failed");
return Result::Error;
}
if (!(statbuf.st_mode & S_IFREG)) {
fprintf(stderr, "%s is not a regular file.\n", filename_cstr);
return Result::Error;
}
FILE* infile = fopen(filename_cstr, "rb");
if (!infile) {
const char format[] = "unable to read file %s";
char msg[PATH_MAX + sizeof(format)];
wabt_snprintf(msg, sizeof(msg), format, filename_cstr);
perror(msg);
return Result::Error;
}
if (fseek(infile, 0, SEEK_END) < 0) {
perror("fseek to end failed");
fclose(infile);
return Result::Error;
}
long size = ftell(infile);
if (size < 0) {
perror("ftell failed");
fclose(infile);
return Result::Error;
}
if (fseek(infile, 0, SEEK_SET) < 0) {
perror("fseek to beginning failed");
fclose(infile);
return Result::Error;
}
out_data->resize(size);
if (size != 0 && fread(out_data->data(), size, 1, infile) != 1) {
perror("fread failed");
fclose(infile);
return Result::Error;
}
fclose(infile);
return Result::Ok;
}
void InitStdio() {
#if COMPILER_IS_MSVC
int result = _setmode(_fileno(stdout), _O_BINARY);
if (result == -1) {
perror("Cannot set mode binary to stdout");
}
result = _setmode(_fileno(stderr), _O_BINARY);
if (result == -1) {
perror("Cannot set mode binary to stderr");
}
#endif
}
} // namespace wabt
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