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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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
#include "option-parser.h"
#include "stream.h"
#include "writer.h"
#include "binary-reader.h"
#include "binary-reader-objdump.h"
#define PROGRAM_NAME "wasmdump"
#define NOPE WABT_OPTION_NO_ARGUMENT
#define YEP WABT_OPTION_HAS_ARGUMENT
enum {
FLAG_HEADERS,
FLAG_SECTION,
FLAG_RAW,
FLAG_DISASSEMBLE,
FLAG_DEBUG,
FLAG_DETAILS,
FLAG_RELOCS,
FLAG_HELP,
NUM_FLAGS
};
static const char s_description[] =
" Print information about the contents of a wasm binary file.\n"
"\n"
"examples:\n"
" $ wasmdump test.wasm\n";
static WabtOption s_options[] = {
{FLAG_HEADERS, 'h', "headers", nullptr, NOPE, "print headers"},
{FLAG_SECTION, 'j', "section", nullptr, YEP, "select just one section"},
{FLAG_RAW, 's', "full-contents", nullptr, NOPE,
"print raw section contents"},
{FLAG_DISASSEMBLE, 'd', "disassemble", nullptr, NOPE,
"disassemble function bodies"},
{FLAG_DEBUG, '\0', "debug", nullptr, NOPE, "disassemble function bodies"},
{FLAG_DETAILS, 'x', "details", nullptr, NOPE, "Show section details"},
{FLAG_RELOCS, 'r', "reloc", nullptr, NOPE,
"show relocations inline with disassembly"},
{FLAG_HELP, 'h', "help", nullptr, NOPE, "print this help message"},
};
WABT_STATIC_ASSERT(NUM_FLAGS == WABT_ARRAY_SIZE(s_options));
static WabtObjdumpOptions s_objdump_options;
static void on_argument(struct WabtOptionParser* parser, const char* argument) {
s_objdump_options.infile = argument;
}
static void on_option(struct WabtOptionParser* parser,
struct WabtOption* option,
const char* argument) {
switch (option->id) {
case FLAG_HEADERS:
s_objdump_options.headers = true;
break;
case FLAG_RAW:
s_objdump_options.raw = true;
break;
case FLAG_DEBUG:
s_objdump_options.debug = true;
case FLAG_DISASSEMBLE:
s_objdump_options.disassemble = true;
break;
case FLAG_DETAILS:
s_objdump_options.details = true;
break;
case FLAG_RELOCS:
s_objdump_options.relocs = true;
break;
case FLAG_SECTION:
s_objdump_options.section_name = argument;
break;
case FLAG_HELP:
wabt_print_help(parser, PROGRAM_NAME);
exit(0);
break;
}
}
static void on_option_error(struct WabtOptionParser* parser,
const char* message) {
WABT_FATAL("%s\n", message);
}
static void parse_options(int argc, char** argv) {
WabtOptionParser parser;
WABT_ZERO_MEMORY(parser);
parser.description = s_description;
parser.options = s_options;
parser.num_options = WABT_ARRAY_SIZE(s_options);
parser.on_option = on_option;
parser.on_argument = on_argument;
parser.on_error = on_option_error;
wabt_parse_options(&parser, argc, argv);
if (!s_objdump_options.infile) {
wabt_print_help(&parser, PROGRAM_NAME);
WABT_FATAL("No filename given.\n");
}
}
int main(int argc, char** argv) {
wabt_init_stdio();
parse_options(argc, argv);
if (!s_objdump_options.headers && !s_objdump_options.details && !s_objdump_options.disassemble && !s_objdump_options.raw) {
fprintf(stderr, "At least one of the following switches must be given:\n");
fprintf(stderr, " -d/--disassemble\n");
fprintf(stderr, " -h/--headers\n");
fprintf(stderr, " -x/--details\n");
fprintf(stderr, " -s/--full-contents\n");
return 1;
}
void* void_data;
size_t size;
WabtResult result =
wabt_read_file(s_objdump_options.infile, &void_data, &size);
if (WABT_FAILED(result))
return result;
uint8_t* data = (uint8_t*)void_data;
// Perform serveral passed over the binary in order to print out different
// types of information.
s_objdump_options.print_header = 1;
if (!s_objdump_options.headers && !s_objdump_options.details &&
!s_objdump_options.disassemble && !s_objdump_options.raw) {
printf("At least one of the following switches must be given:\n");
printf(" -d/--disassemble\n");
printf(" -h/--headers\n");
printf(" -x/--details\n");
printf(" -s/--full-contents\n");
return 1;
}
s_objdump_options.mode = WABT_DUMP_PREPASS;
result = wabt_read_binary_objdump(data, size, &s_objdump_options);
if (WABT_FAILED(result))
goto done;
// Pass 1: Print the section headers
if (s_objdump_options.headers) {
s_objdump_options.mode = WABT_DUMP_HEADERS;
result = wabt_read_binary_objdump(data, size, &s_objdump_options);
if (WABT_FAILED(result))
goto done;
s_objdump_options.print_header = 0;
}
// Pass 2: Print extra information based on section type
if (s_objdump_options.details) {
s_objdump_options.mode = WABT_DUMP_DETAILS;
result = wabt_read_binary_objdump(data, size, &s_objdump_options);
if (WABT_FAILED(result))
goto done;
s_objdump_options.print_header = 0;
}
if (s_objdump_options.disassemble) {
s_objdump_options.mode = WABT_DUMP_DISASSEMBLE;
result = wabt_read_binary_objdump(data, size, &s_objdump_options);
if (WABT_FAILED(result))
goto done;
s_objdump_options.print_header = 0;
}
// Pass 3: Dump to raw contents of the sections
if (s_objdump_options.raw) {
s_objdump_options.mode = WABT_DUMP_RAW_DATA;
result = wabt_read_binary_objdump(data, size, &s_objdump_options);
}
done:
wabt_free(data);
return result;
}
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