void *dlsym(void *handle, const char *name)
{
int error = 0;
int dl = (int)handle;
void* symbol;
if( dl == 0 )
{
__dl_set_errno( _DL_EBADHANDLE );
return( NULL );
}
if( name == NULL )
{
__dl_set_errno( _DL_EBADSYMBOL );
return( NULL );
}
if( dl == RTLD_NEXT )
{
__dl_set_errno( _DL_EBADHANDLE );
return( NULL );
}
error = get_symbol_address( dl, name, -1, (void**) &symbol );
if( error < 0 )
{
__dl_set_errno( _DL_ENOSYM );
return( NULL );
}
return( symbol );
}
dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
const char *pathname, FILE *fp)
{
void *p;
int lib;
char funcname[258];
if (Py_VerboseFlag)
printf("load_library %s\n", pathname);
lib = load_library(pathname, 0);
if (lib < 0) {
char buf[512];
if (Py_VerboseFlag)
perror(pathname);
PyOS_snprintf(buf, sizeof(buf), "Failed to load %.200s: %.200s",
pathname, strerror(errno));
PyErr_SetString(PyExc_ImportError, buf);
return NULL;
}
PyOS_snprintf(funcname, sizeof(funcname), "init%.200s", shortname);
if (Py_VerboseFlag)
printf("get_symbol_address %s\n", funcname);
if (get_symbol_address(lib, funcname, -1, &p) < 0) {
p = NULL;
if (Py_VerboseFlag)
perror(funcname);
}
return (dl_funcptr) p;
}
void *
__libc_dlsym (void *map, const char *name)
{
int error = 0;
int *dl = (int*)map;
void* symbol;
if( name == NULL || dl == NULL || *dl == RTLD_NEXT )
return NULL;
error = get_symbol_address( *dl, name, -1, (void**) &symbol );
if( error < 0 )
return NULL;
return symbol;
}
static void add_addr(uint64_t addr) {
add_hex_uint64(addr);
#if ENABLE_Symbols
if (ctx != NULL) {
Symbol * sym = NULL;
char * name = NULL;
ContextAddress sym_addr = 0;
if (find_symbol_by_addr(ctx, STACK_NO_FRAME, (ContextAddress)addr, &sym) < 0) return;
if (get_symbol_name(sym, &name) < 0 || name == NULL) return;
if (get_symbol_address(sym, &sym_addr) < 0) return;
if (sym_addr <= addr) {
add_str(" ; ");
add_str(name);
if (sym_addr < addr) {
add_str(" + 0x");
add_hex_uint64(addr - sym_addr);
}
}
}
#endif
}
void do_sym_to_addr(Monitor* mon, int pid, const char* modName, const char* symName)
{
get_symbol_address(mon, pid, modName, symName);
}
static void command_get_context(char * token, Channel * c) {
int err = 0;
char id[256];
Symbol sym;
json_read_string(&c->inp, id, sizeof(id));
if (read_stream(&c->inp) != 0) exception(ERR_JSON_SYNTAX);
if (read_stream(&c->inp) != MARKER_EOM) exception(ERR_JSON_SYNTAX);
if (id2symbol(id, &sym) < 0) err = errno;
write_stringz(&c->out, "R");
write_stringz(&c->out, token);
write_errno(&c->out, err);
if (err == 0) {
char * name = NULL;
int type_class = TYPE_CLASS_UNKNOWN;
Symbol type;
size_t size = 0;
void * value = NULL;
unsigned long length = 0;
unsigned long offset = 0;
ContextAddress address = 0;
int frame = STACK_NO_FRAME; /* TODO: symbol frame */
write_stream(&c->out, '{');
json_write_string(&c->out, "ID");
write_stream(&c->out, ':');
json_write_string(&c->out, id);
write_stream(&c->out, ',');
json_write_string(&c->out, "ExeID");
write_stream(&c->out, ':');
json_write_string(&c->out, container_id(sym.ctx));
write_stream(&c->out, ',');
if (get_symbol_name(&sym, &name) == 0 && name != NULL) {
json_write_string(&c->out, "Name");
write_stream(&c->out, ':');
json_write_string(&c->out, name);
write_stream(&c->out, ',');
loc_free(name);
}
if (get_symbol_type_class(&sym, &type_class) == 0 && type_class != TYPE_CLASS_UNKNOWN) {
json_write_string(&c->out, "TypeClass");
write_stream(&c->out, ':');
json_write_long(&c->out, type_class);
write_stream(&c->out, ',');
}
if (get_symbol_type(&sym, &type) == 0) {
json_write_string(&c->out, "TypeID");
write_stream(&c->out, ':');
json_write_string(&c->out, symbol2id(&type));
write_stream(&c->out, ',');
}
if (get_symbol_base_type(&sym, &type) == 0) {
json_write_string(&c->out, "BaseTypeID");
write_stream(&c->out, ':');
json_write_string(&c->out, symbol2id(&type));
write_stream(&c->out, ',');
}
if (get_symbol_index_type(&sym, &type) == 0) {
json_write_string(&c->out, "IndexTypeID");
write_stream(&c->out, ':');
json_write_string(&c->out, symbol2id(&type));
write_stream(&c->out, ',');
}
if (get_symbol_size(&sym, frame, &size) == 0) {
json_write_string(&c->out, "Size");
write_stream(&c->out, ':');
json_write_long(&c->out, size);
write_stream(&c->out, ',');
}
if (get_symbol_length(&sym, frame, &length) == 0) {
json_write_string(&c->out, "Length");
write_stream(&c->out, ':');
json_write_long(&c->out, length);
write_stream(&c->out, ',');
}
if (sym.sym_class == SYM_CLASS_REFERENCE) {
if (get_symbol_offset(&sym, &offset) == 0) {
json_write_string(&c->out, "Offset");
write_stream(&c->out, ':');
json_write_long(&c->out, offset);
write_stream(&c->out, ',');
}
if (get_symbol_address(&sym, frame, &address) == 0) {
json_write_string(&c->out, "Address");
write_stream(&c->out, ':');
json_write_long(&c->out, address);
write_stream(&c->out, ',');
}
}
if (sym.sym_class == SYM_CLASS_VALUE && get_symbol_value(&sym, &value, &size) == 0) {
json_write_string(&c->out, "Value");
write_stream(&c->out, ':');
json_write_binary(&c->out, value, size);
write_stream(&c->out, ',');
}
json_write_string(&c->out, "Class");
write_stream(&c->out, ':');
json_write_long(&c->out, sym.sym_class);
write_stream(&c->out, '}');
write_stream(&c->out, 0);
}
else {
write_stringz(&c->out, "null");
}
write_stream(&c->out, MARKER_EOM);
}
static void disassemble_cache_client(void * x) {
DisassembleCmdArgs * args = (DisassembleCmdArgs *)x;
int error = 0;
Context * ctx = NULL;
uint8_t * mem_buf = NULL;
ContextAddress buf_addr = 0;
ContextAddress buf_size = 0;
size_t mem_size = 0;
ByteArrayOutputStream buf;
OutputStream * buf_out = create_byte_array_output_stream(&buf);
Channel * c = cache_channel();
char * data = NULL;
size_t size = 0;
ContextISA isa;
memset(&isa, 0, sizeof(isa));
ctx = id2ctx(args->id);
if (ctx == NULL) error = ERR_INV_CONTEXT;
else if (ctx->exited) error = ERR_ALREADY_EXITED;
if (!error) check_all_stopped(ctx);
if (!error) {
ContextAddress sym_addr = 0;
ContextAddress sym_size = 0;
int sym_addr_ok = 0;
int sym_size_ok = 0;
#if SERVICE_Symbols
{
Symbol * sym = NULL;
if (find_symbol_by_addr(ctx, STACK_NO_FRAME, args->addr, &sym) == 0) {
if (get_symbol_address(sym, &sym_addr) == 0) sym_addr_ok = 1;
if (get_symbol_size(sym, &sym_size) == 0) sym_size_ok = 1;
}
if (sym_addr_ok && sym_addr <= args->addr) {
if (args->addr - sym_addr >= 0x1000) {
sym_addr_ok = 0;
sym_size_ok = 0;
}
else if (sym_size_ok && sym_addr + sym_size > args->addr + args->size) {
sym_size = args->addr + args->size - sym_addr;
}
}
}
#endif
#if SERVICE_LineNumbers
if (!sym_addr_ok || !sym_size_ok) {
CodeArea * area = NULL;
address_to_line(ctx, args->addr, args->addr + 1, address_to_line_cb, &area);
if (area != NULL) {
sym_addr = area->start_address;
sym_size = area->end_address - area->start_address;
sym_addr_ok = 1;
sym_size_ok = 1;
}
}
#endif
if (sym_addr_ok && sym_size_ok && sym_addr <= args->addr && sym_addr + sym_size > args->addr) {
buf_addr = sym_addr;
buf_size = sym_size;
mem_size = (size_t)sym_size;
}
else if (sym_addr_ok && sym_addr < args->addr) {
if (get_isa(ctx, sym_addr, &isa) < 0) {
error = errno;
}
else {
buf_addr = sym_addr;
buf_size = args->addr + args->size - sym_addr;
if (isa.max_instruction_size > 0) {
mem_size = (size_t)(buf_size + isa.max_instruction_size);
}
else {
mem_size = (size_t)(buf_size + MAX_INSTRUCTION_SIZE);
}
}
}
else {
/* Use default address alignment */
if (get_isa(ctx, args->addr, &isa) < 0) {
error = errno;
}
else {
if (isa.alignment > 0) {
buf_addr = args->addr & ~(ContextAddress)(isa.alignment - 1);
}
else {
buf_addr = args->addr & ~(ContextAddress)(DEFAULT_ALIGMENT - 1);
}
buf_size = args->addr + args->size - buf_addr;
if (isa.max_instruction_size > 0) {
mem_size = (size_t)(buf_size + isa.max_instruction_size);
}
else {
mem_size = (size_t)(buf_size + MAX_INSTRUCTION_SIZE);
}
}
}
if (!error) {
mem_buf = (uint8_t *)tmp_alloc(mem_size);
if (context_read_mem(ctx, buf_addr, mem_buf, mem_size) < 0) error = errno;
if (error) {
#if ENABLE_ExtendedMemoryErrorReports
MemoryErrorInfo info;
if (context_get_mem_error_info(&info) == 0 && info.size_valid > 0) {
mem_size = info.size_valid;
error = 0;
}
#endif
}
}
}
if (!error && disassemble_block(
ctx, buf_out, mem_buf, buf_addr, buf_size,
mem_size, &isa, args) < 0) error = errno;
if (get_error_code(error) == ERR_CACHE_MISS) {
loc_free(buf.mem);
buf.mem = NULL;
buf.max = 0;
buf.pos = 0;
}
cache_exit();
get_byte_array_output_stream_data(&buf, &data, &size);
if (!is_channel_closed(c)) {
OutputStream * out = &c->out;
write_stringz(out, "R");
write_stringz(out, args->token);
write_errno(out, error);
if (size > 0) {
write_block_stream(out, data, size);
}
else {
write_string(out, "null");
}
write_stream(out, 0);
write_stream(out, MARKER_EOM);
}
loc_free(data);
}
