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ruby/iseq.c

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/**********************************************************************
iseq.c -
$Author$
$Date$
created at: 2006-07-11(Tue) 09:00:03 +0900
Copyright (C) 2006 Koichi Sasada
**********************************************************************/
#include <ruby.h>
#include <node.h>
#include "yarvcore.h"
#include "insns.inc"
#include "insns_info.inc"
// #define MARK_FREE_DEBUG 1
#include "gc.h"
static void
compile_data_free(struct iseq_compile_data *compile_data)
{
if (compile_data) {
struct iseq_compile_data_storage *cur, *next;
cur = compile_data->storage_head;
while (cur) {
next = cur->next;
ruby_xfree(cur);
cur = next;
}
ruby_xfree(compile_data);
}
}
static void
iseq_free(void *ptr)
{
yarv_iseq_t *iseq;
FREE_REPORT_ENTER("iseq");
if (ptr) {
iseq = ptr;
/* It's possible that strings are freed
* GC_INFO("%s @ %s\n", RSTRING_PTR(iseq->name),
* RSTRING_PTR(iseq->file_name));
*/
if (iseq->iseq != iseq->iseq_encoded) {
FREE_UNLESS_NULL(iseq->iseq_encoded);
}
FREE_UNLESS_NULL(iseq->iseq);
FREE_UNLESS_NULL(iseq->insn_info_tbl);
FREE_UNLESS_NULL(iseq->local_tbl);
FREE_UNLESS_NULL(iseq->catch_table);
FREE_UNLESS_NULL(iseq->arg_opt_tbl);
compile_data_free(iseq->compile_data);
ruby_xfree(ptr);
}
FREE_REPORT_LEAVE("iseq");
}
static void
iseq_mark(void *ptr)
{
yarv_iseq_t *iseq;
MARK_REPORT_ENTER("iseq");
if (ptr) {
iseq = ptr;
GC_INFO("%s @ %s\n", RSTRING_PTR(iseq->name), RSTRING_PTR(iseq->file_name));
MARK_UNLESS_NULL(iseq->iseq_mark_ary);
MARK_UNLESS_NULL(iseq->name);
MARK_UNLESS_NULL(iseq->file_name);
MARK_UNLESS_NULL((VALUE)iseq->cref_stack);
MARK_UNLESS_NULL(iseq->klass);
MARK_UNLESS_NULL((VALUE)iseq->node);
MARK_UNLESS_NULL(iseq->cached_special_block);
if (iseq->compile_data != 0) {
MARK_UNLESS_NULL(iseq->compile_data->mark_ary);
MARK_UNLESS_NULL(iseq->compile_data->err_info);
MARK_UNLESS_NULL(iseq->compile_data->catch_table_ary);
}
}
MARK_REPORT_LEAVE("iseq");
}
static VALUE
iseq_alloc(VALUE klass)
{
VALUE volatile obj;
yarv_iseq_t *iseq;
obj = Data_Make_Struct(klass, yarv_iseq_t, iseq_mark, iseq_free, iseq);
MEMZERO(iseq, yarv_iseq_t, 1);
return obj;
}
static VALUE
prepare_iseq_build(yarv_iseq_t *iseq,
VALUE name, VALUE file_name,
VALUE parent, VALUE type, VALUE block_opt,
const yarv_compile_option_t *option)
{
iseq->name = name;
iseq->defined_method_id = 0;
iseq->file_name = file_name;
iseq->iseq_mark_ary = rb_ary_new();
RBASIC(iseq->iseq_mark_ary)->klass = 0;
iseq->type = type;
iseq->arg_rest = 0;
iseq->arg_block = 0;
iseq->klass = 0;
iseq->special_block_builder = GC_GUARDED_PTR_REF(block_opt);
iseq->cached_special_block_builder = 0;
iseq->cached_special_block = 0;
/* set class nest stack */
if (type == ISEQ_TYPE_TOP) {
/* toplevel is private */
iseq->cref_stack = NEW_BLOCK(rb_cObject);
iseq->cref_stack->nd_file = 0;
iseq->cref_stack->nd_visi = NOEX_PRIVATE;
}
else if (type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
iseq->cref_stack = NEW_BLOCK(0); /* place holder */
iseq->cref_stack->nd_file = 0;
}
else if (parent) {
yarv_iseq_t *piseq;
GetISeqPtr(parent, piseq);
iseq->cref_stack = piseq->cref_stack;
}
iseq->compile_data = ALLOC(struct iseq_compile_data);
MEMZERO(iseq->compile_data, struct iseq_compile_data, 1);
iseq->compile_data->mark_ary = rb_ary_new();
RBASIC(iseq->compile_data->mark_ary)->klass = 0;
iseq->compile_data->storage_head = iseq->compile_data->storage_current =
(struct iseq_compile_data_storage *)
ALLOC_N(char, INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE +
sizeof(struct iseq_compile_data_storage));
iseq->compile_data->catch_table_ary = rb_ary_new();
iseq->compile_data->storage_head->pos = 0;
iseq->compile_data->storage_head->next = 0;
iseq->compile_data->storage_head->size =
INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE;
iseq->compile_data->storage_head->buff =
(char *)(&iseq->compile_data->storage_head->buff + 1);
iseq->compile_data->option = option;
if (type == ISEQ_TYPE_TOP ||
type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
iseq->local_iseq = iseq;
}
else {
yarv_iseq_t *piseq;
GetISeqPtr(parent, piseq);
iseq->local_iseq = piseq->local_iseq;
}
if (RTEST(parent)) {
yarv_iseq_t *piseq;
GetISeqPtr(parent, piseq);
iseq->parent_iseq = piseq;
}
return Qtrue;
}
static VALUE
cleanup_iseq_build(yarv_iseq_t *iseq)
{
struct iseq_compile_data *data = iseq->compile_data;
iseq->compile_data = 0;
compile_data_free(data);
if (ruby_nerrs > 0) {
VALUE str = rb_str_buf_new2("compile error");
ruby_nerrs = 0;
rb_exc_raise(rb_exc_new3(rb_eSyntaxError, str));
}
return Qtrue;
}
static yarv_compile_option_t COMPILE_OPTION_DEFAULT = {
OPT_INLINE_CONST_CACHE, /* int inline_const_cache; */
OPT_PEEPHOLE_OPTIMIZATION, /* int peephole_optimization; */
OPT_SPECIALISED_INSTRUCTION, /* int specialized_instruction; */
OPT_OPERANDS_UNIFICATION, /* int operands_unification; */
OPT_INSTRUCTIONS_UNIFICATION, /* int instructions_unification; */
OPT_STACK_CACHING, /* int stack_caching; */
};
static const yarv_compile_option_t COMPILE_OPTION_FALSE;
static void
make_compile_option(yarv_compile_option_t *option, VALUE opt)
{
if (opt == Qnil) {
*option = COMPILE_OPTION_DEFAULT;
}
else if (opt == Qfalse) {
*option = COMPILE_OPTION_FALSE;
}
else if (opt == Qtrue) {
memset(option, 1, sizeof(yarv_compile_option_t));
}
else if (CLASS_OF(opt) == rb_cHash) {
#define SET_COMPILE_OPTION(o, h, mem) \
{ VALUE flag = rb_hash_aref(h, ID2SYM(rb_intern(#mem))); dp(flag);\
if (flag == Qtrue) { o->mem = 1; } \
if (flag == Qfalse) { o->mem = 0; } \
}
SET_COMPILE_OPTION(option, opt, inline_const_cache);
SET_COMPILE_OPTION(option, opt, peephole_optimization);
SET_COMPILE_OPTION(option, opt, specialized_instruction);
SET_COMPILE_OPTION(option, opt, operands_unification);
SET_COMPILE_OPTION(option, opt, instructions_unification);
SET_COMPILE_OPTION(option, opt, stack_caching);
#undef SET_COMPILE_OPTION
}
else {
rb_raise(rb_eTypeError, "Compile option must be Hash/true/false/nil");
}
}
static VALUE
make_compile_option_value(yarv_compile_option_t *option)
{
VALUE opt = rb_hash_new();
#define SET_COMPILE_OPTION(o, h, mem) \
rb_hash_aset(h, ID2SYM(rb_intern(#mem)), o->mem ? Qtrue : Qfalse)
{
SET_COMPILE_OPTION(option, opt, inline_const_cache);
SET_COMPILE_OPTION(option, opt, peephole_optimization);
SET_COMPILE_OPTION(option, opt, specialized_instruction);
SET_COMPILE_OPTION(option, opt, operands_unification);
SET_COMPILE_OPTION(option, opt, instructions_unification);
SET_COMPILE_OPTION(option, opt, stack_caching);
}
#undef SET_COMPILE_OPTION
return opt;
}
VALUE
yarv_iseq_new(NODE *node, VALUE name, VALUE file_name,
VALUE parent, VALUE type)
{
return yarv_iseq_new_with_opt(node, name, file_name, parent, type,
&COMPILE_OPTION_DEFAULT);
}
static VALUE
yarv_iseq_new_with_bopt_and_opt(NODE *node, VALUE name, VALUE file_name,
VALUE parent, VALUE type, VALUE bopt,
const yarv_compile_option_t *option)
{
yarv_iseq_t *iseq;
VALUE self = iseq_alloc(cYarvISeq);
GetISeqPtr(self, iseq);
iseq->self = self;
prepare_iseq_build(iseq, name, file_name, parent, type, bopt, option);
iseq_compile(self, node);
cleanup_iseq_build(iseq);
return self;
}
VALUE
yarv_iseq_new_with_opt(NODE *node, VALUE name, VALUE file_name,
VALUE parent, VALUE type,
const yarv_compile_option_t *option)
{
return yarv_iseq_new_with_bopt_and_opt(node, name, file_name, parent, type,
Qfalse, option);
}
VALUE
yarv_iseq_new_with_bopt(NODE *node, VALUE name, VALUE file_name,
VALUE parent, VALUE type, VALUE bopt)
{
return yarv_iseq_new_with_bopt_and_opt(node, name, file_name, parent, type,
bopt, &COMPILE_OPTION_DEFAULT);
}
VALUE iseq_build_from_ary(yarv_iseq_t *iseq, VALUE line,
VALUE locals, VALUE args, VALUE exception, VALUE body);
#define CHECK_ARRAY(v) rb_convert_type(v, T_ARRAY, "Array", "to_ary")
#define CHECK_STRING(v) rb_convert_type(v, T_STRING, "String", "to_str")
#define CHECK_SYMBOL(v) rb_convert_type(v, T_SYMBOL, "Symbol", "to_sym")
#define CHECK_INTEGER(v) (NUM2LONG(v), v)
VALUE
iseq_load(VALUE self, VALUE data, VALUE parent, VALUE opt)
{
VALUE iseqval = iseq_alloc(cYarvISeq);
VALUE magic, version1, version2, format_type, misc;
VALUE name, filename, line;
VALUE type, body, locals, args, exception;
VALUE iseq_type;
struct st_table *type_map = 0;
yarv_iseq_t *iseq;
yarv_compile_option_t option;
/* [magic, major_version, minor_version, format_type, misc,
* name, filename, line,
* type, locals, args, exception_table, body]
*/
data = CHECK_ARRAY(data);
magic = CHECK_STRING(rb_ary_entry(data, 0));
version1 = CHECK_INTEGER(rb_ary_entry(data, 1));
version2 = CHECK_INTEGER(rb_ary_entry(data, 2));
format_type = CHECK_INTEGER(rb_ary_entry(data, 3));
misc = rb_ary_entry(data, 4); /* TODO */
name = CHECK_STRING(rb_ary_entry(data, 5));
filename = CHECK_STRING(rb_ary_entry(data, 6));
line = CHECK_ARRAY(rb_ary_entry(data, 7));
type = CHECK_SYMBOL(rb_ary_entry(data, 8));
locals = CHECK_ARRAY(rb_ary_entry(data, 9));
args = rb_ary_entry(data, 10);
if (FIXNUM_P(args) || (args = CHECK_ARRAY(args))) {
/* */
}
exception = CHECK_ARRAY(rb_ary_entry(data, 11));
body = CHECK_ARRAY(rb_ary_entry(data, 12));
GetISeqPtr(iseqval, iseq);
iseq->self = iseqval;
if (type_map == 0) {
type_map = st_init_numtable();
st_insert(type_map, ID2SYM(rb_intern("toplevel")), ISEQ_TYPE_TOP);
st_insert(type_map, ID2SYM(rb_intern("method")), ISEQ_TYPE_METHOD);
st_insert(type_map, ID2SYM(rb_intern("block")), ISEQ_TYPE_BLOCK);
st_insert(type_map, ID2SYM(rb_intern("class")), ISEQ_TYPE_CLASS);
st_insert(type_map, ID2SYM(rb_intern("rescue")), ISEQ_TYPE_RESCUE);
st_insert(type_map, ID2SYM(rb_intern("ensure")), ISEQ_TYPE_ENSURE);
st_insert(type_map, ID2SYM(rb_intern("eval")), ISEQ_TYPE_EVAL);
}
if (st_lookup(type_map, type, &iseq_type) == 0) {
rb_raise(rb_eTypeError, "unsupport type: %p", type);
}
if (parent == Qnil) {
parent = 0;
}
make_compile_option(&option, opt);
prepare_iseq_build(iseq, name, filename,
parent, iseq_type, 0, &option);
iseq_build_from_ary(iseq, line, locals, args, exception, body);
cleanup_iseq_build(iseq);
return iseqval;
}
static VALUE
iseq_s_load(int argc, VALUE *argv, VALUE self)
{
VALUE data, opt=Qnil;
rb_scan_args(argc, argv, "11", &data, &opt);
return iseq_load(self, data, 0, opt);
}
static NODE *
compile_string(VALUE str, VALUE file, VALUE line)
{
NODE *node;
node = rb_compile_string(StringValueCStr(file), str, NUM2INT(line));
if (ruby_nerrs > 0) {
ruby_nerrs = 0;
rb_exc_raise(GET_THREAD()->errinfo); // TODO: check err
}
return node;
}
static VALUE
iseq_s_compile(int argc, VALUE *argv, VALUE self)
{
VALUE str, file = Qnil, line = INT2FIX(1), opt = Qnil;
NODE *node;
yarv_compile_option_t option;
rb_scan_args(argc, argv, "13", &str, &file, &line, &opt);
file = file == Qnil ? rb_str_new2("<compiled>") : file;
line = line == Qnil ? INT2FIX(1) : line;
node = compile_string(str, file, line);
make_compile_option(&option, opt);
return yarv_iseq_new_with_opt(node, rb_str_new2("<main>"), file, Qfalse,
ISEQ_TYPE_TOP, &option);
}
static VALUE
iseq_s_compile_file(int argc, VALUE *argv, VALUE self)
{
VALUE file, line = INT2FIX(1), opt = Qnil;
VALUE parser;
VALUE f;
NODE *node;
const char *fname;
yarv_compile_option_t option;
rb_scan_args(argc, argv, "11", &file, &opt);
fname = StringValueCStr(file);
f = rb_file_open(fname, "r");
parser = rb_parser_new();
node = rb_parser_compile_file(parser, fname, f, NUM2INT(line));
make_compile_option(&option, opt);
return yarv_iseq_new_with_opt(node, rb_str_new2("<main>"), file, Qfalse,
ISEQ_TYPE_TOP, &option);
}
static VALUE
iseq_s_compile_option_set(VALUE self, VALUE opt)
{
yarv_compile_option_t option;
make_compile_option(&option, opt);
COMPILE_OPTION_DEFAULT = option;
return make_compile_option_value(&option);
}
static yarv_iseq_t *
iseq_check(VALUE val)
{
yarv_iseq_t *iseq;
GetISeqPtr(val, iseq);
if (!iseq->name) {
rb_raise(rb_eTypeError, "uninitialized InstructionSequence");
}
return iseq;
}
VALUE yarv_th_eval(yarv_thread_t *th, VALUE iseqval);
static VALUE
iseq_eval(VALUE self)
{
return yarv_th_eval(GET_THREAD(), self);
}
static VALUE
iseq_inspect(VALUE self)
{
char buff[0x100];
yarv_iseq_t *iseq = iseq_check(self);
snprintf(buff, sizeof(buff), "<ISeq:%s@%s>",
RSTRING_PTR(iseq->name), RSTRING_PTR(iseq->file_name));
return rb_str_new2(buff);
}
VALUE iseq_data_to_ary(yarv_iseq_t *iseq);
static VALUE
iseq_to_a(VALUE self)
{
yarv_iseq_t *iseq = iseq_check(self);
return iseq_data_to_ary(iseq);
}
/*
now, search algorithm is brute force. but this should be binary search.
*/
static unsigned short
find_line_no(yarv_iseq_t *iseqdat, unsigned long pos)
{
unsigned long i, size = iseqdat->insn_info_size;
struct insn_info_struct *iiary = iseqdat->insn_info_tbl;
for (i = 0; i < size; i++) {
if (iiary[i].position == pos) {
return iiary[i].line_no;
}
}
// rb_bug("find_line_no: can't find %lu", pos);
return 0;
}
static unsigned short
find_prev_line_no(yarv_iseq_t *iseqdat, unsigned long pos)
{
unsigned long i, size = iseqdat->insn_info_size;
struct insn_info_struct *iiary = iseqdat->insn_info_tbl;
for (i = 0; i < size; i++) {
if (iiary[i].position == pos) {
if (i > 0) {
return iiary[i - 1].line_no;
}
else {
return 0;
}
}
}
rb_bug("find_prev_line_no: can't find - %lu", pos);
return 0;
}
static VALUE
insn_operand_intern(yarv_iseq_t *iseq,
int insn, int op_no, VALUE op,
int len, int pos, VALUE *pnop, VALUE child)
{
char *types = insn_op_types(insn);
char type = types[op_no];
VALUE ret;
char buff[0x100];
switch (type) {
case TS_OFFSET: /* LONG */
snprintf(buff, sizeof(buff), "%ld", pos + len + op);
ret = rb_str_new2(buff);
break;
case TS_NUM: /* ULONG */
snprintf(buff, sizeof(buff), "%lu", op);
ret = rb_str_new2(buff);
break;
case TS_LINDEX:
{
yarv_iseq_t *ip = iseq->local_iseq;
ret =
rb_str_new2(
rb_id2name(ip->local_tbl[ip->local_size - op + 1]));
break;
}
case TS_DINDEX:{
if (insn == BIN(getdynamic) || insn == BIN(setdynamic)) {
yarv_iseq_t *ip = iseq;
int level = *pnop;
int i;
for (i = 0; i < level; i++) {
ip = ip->parent_iseq;
}
ret =
rb_str_new2(rb_id2name
(ip->local_tbl[ip->local_size - op]));
}
else {
ret = rb_inspect(INT2FIX(op));
}
break;
}
case TS_ID: /* ID (symbol) */
op = ID2SYM(op);
case TS_VALUE: /* VALUE */
ret = rb_inspect(op);
if (CLASS_OF(op) == cYarvISeq) {
rb_ary_push(child, op);
}
break;
case TS_ISEQ: /* iseq */
{
yarv_iseq_t *iseq = (yarv_iseq_t *)op;
if (iseq) {
ret = iseq->name;
if (child) {
rb_ary_push(child, iseq->self);
}
}
else {
ret = rb_str_new2("nil");
}
break;
}
case TS_GENTRY:
{
struct global_entry *entry = (struct global_entry *)op;
ret = rb_str_new2(rb_id2name(entry->id));
}
break;
case TS_IC:
ret = rb_str_new2("<ic>");
break;
case TS_CDHASH:
ret = rb_str_new2("<cdhash>");
break;
default:
rb_bug("iseq_disasm: unknown operand type: %c", type);
}
return ret;
}
/**
* Disassemble a instruction
* Iseq -> Iseq inspect object
*/
VALUE
iseq_disasm_insn(VALUE ret, VALUE *iseq, int pos,
yarv_iseq_t *iseqdat, VALUE child)
{
int insn = iseq[pos];
int len = insn_len(insn);
int i, j;
char *types = insn_op_types(insn);
VALUE str = rb_str_new(0, 0);
char buff[0x100];
char insn_name_buff[0x100];
strcpy(insn_name_buff, insn_name(insn));
if (0) {
for (i = 0; insn_name_buff[i]; i++) {
if (insn_name_buff[i] == '_') {
insn_name_buff[i] = 0;
}
}
}
snprintf(buff, sizeof(buff), "%04d %-16s ", pos, insn_name_buff);
rb_str_cat2(str, buff);
for (j = 0; types[j]; j++) {
char *types = insn_op_types(insn);
VALUE opstr = insn_operand_intern(iseqdat, insn, j, iseq[pos + j + 1],
len, pos, &iseq[pos + j + 2],
child);
rb_str_concat(str, opstr);
GC_CHECK();
if (types[j + 1]) {
rb_str_cat2(str, ", ");
}
}
{
int line_no = find_line_no(iseqdat, pos);
int prev = find_prev_line_no(iseqdat, pos);
if (line_no && line_no != prev) {
snprintf(buff, sizeof(buff), "%-70s(%4d)", RSTRING_PTR(str),
line_no);
str = rb_str_new2(buff);
}
}
if (ret) {
rb_str_cat2(str, "\n");
rb_str_concat(ret, str);
}
else {
printf("%s\n", RSTRING_PTR(str));
}
return len;
}
static char *
catch_type(int type)
{
switch (type) {
case CATCH_TYPE_RESCUE:
return "rescue";
case CATCH_TYPE_ENSURE:
return "ensure";
case CATCH_TYPE_RETRY:
return "retry";
case CATCH_TYPE_BREAK:
return "break";
case CATCH_TYPE_REDO:
return "redo";
case CATCH_TYPE_NEXT:
return "next";
default:
rb_bug("unknown catch type (%d)", type);
return 0;
}
}
VALUE
iseq_disasm(VALUE self)
{
yarv_iseq_t *iseqdat = iseq_check(self);
VALUE *iseq;
VALUE str = rb_str_new(0, 0);
VALUE child = rb_ary_new();
unsigned long size;
int i;
ID *tbl;
char buff[0x200];
iseq = iseqdat->iseq;
size = iseqdat->size;
rb_str_cat2(str, "== disasm: ");
rb_str_concat(str, iseq_inspect(iseqdat->self));
for (i = RSTRING_LEN(str); i < 72; i++) {
rb_str_cat2(str, "=");
}
rb_str_cat2(str, "\n");
/* show catch table information */
if (iseqdat->catch_table_size != 0) {
rb_str_cat2(str, "== catch table\n");
}
for (i = 0; i < iseqdat->catch_table_size; i++) {
struct catch_table_entry *entry = &iseqdat->catch_table[i];
sprintf(buff,
"| catch type: %-6s st: %04d ed: %04d sp: %04d cont: %04d\n",
catch_type((int)entry->type), (int)entry->start,
(int)entry->end, (int)entry->sp, (int)entry->cont);
rb_str_cat2(str, buff);
if (entry->iseq) {
rb_str_concat(str, iseq_disasm(entry->iseq));
}
}
if (iseqdat->catch_table_size != 0) {
rb_str_cat2(str, "|-------------------------------------"
"-----------------------------------\n");
}
/* show local table information */
tbl = iseqdat->local_tbl;
if (tbl) {
int opt = 0;
if (iseqdat->type == ISEQ_TYPE_METHOD ||
iseqdat->type == ISEQ_TYPE_TOP ||
iseqdat->type == ISEQ_TYPE_CLASS) {
opt = 1;
}
snprintf(buff, sizeof(buff),
"local scope table (size: %d, argc: %d)\n",
iseqdat->local_size, iseqdat->argc);
rb_str_cat2(str, buff);
for (i = 0; i < iseqdat->local_size - opt; i++) {
const char *name = rb_id2name(tbl[i + opt]);
char info[0x100];
char argi[0x100] = "";
char opti[0x100] = "";
if (iseqdat->arg_opts) {
int argc = iseqdat->argc;
int opts = iseqdat->arg_opts;
if (i >= argc && i < argc + opts - 1) {
snprintf(opti, sizeof(opti), "Opt=%ld",
iseqdat->arg_opt_tbl[i - argc]);
}
}
snprintf(argi, sizeof(argi), "%s%s%s%s", /* arg, opts, rest, block */
iseqdat->argc > i ? "Arg" : "",
opti,
iseqdat->arg_rest - 1 == i ? "Rest" : "",
iseqdat->arg_block - 1 == i ? "Block" : "");
snprintf(info, sizeof(info), "%s%s%s%s", name ? name : "?",
*argi ? "<" : "", argi, *argi ? ">" : "");
snprintf(buff, sizeof(buff), "[%2d] %-11s",
iseqdat->local_size - i, info);
rb_str_cat2(str, buff);
}
rb_str_cat2(str, "\n");
}
GC_CHECK();
/* show each line */
for (i = 0; i < size;) {
i += iseq_disasm_insn(str, iseq, i, iseqdat, child);
}
for (i = 0; i < RARRAY_LEN(child); i++) {
VALUE isv = rb_ary_entry(child, i);
rb_str_concat(str, iseq_disasm(isv));
}
return str;
}
char *
node_name(int node)
{
switch (node) {
case NODE_METHOD:
return "NODE_METHOD";
case NODE_FBODY:
return "NODE_FBODY";
case NODE_CFUNC:
return "NODE_CFUNC";
case NODE_SCOPE:
return "NODE_SCOPE";
case NODE_BLOCK:
return "NODE_BLOCK";
case NODE_IF:
return "NODE_IF";
case NODE_CASE:
return "NODE_CASE";
case NODE_WHEN:
return "NODE_WHEN";
case NODE_OPT_N:
return "NODE_OPT_N";
case NODE_WHILE:
return "NODE_WHILE";
case NODE_UNTIL:
return "NODE_UNTIL";
case NODE_ITER:
return "NODE_ITER";
case NODE_FOR:
return "NODE_FOR";
case NODE_BREAK:
return "NODE_BREAK";
case NODE_NEXT:
return "NODE_NEXT";
case NODE_REDO:
return "NODE_REDO";
case NODE_RETRY:
return "NODE_RETRY";
case NODE_BEGIN:
return "NODE_BEGIN";
case NODE_RESCUE:
return "NODE_RESCUE";
case NODE_RESBODY:
return "NODE_RESBODY";
case NODE_ENSURE:
return "NODE_ENSURE";
case NODE_AND:
return "NODE_AND";
case NODE_OR:
return "NODE_OR";
case NODE_NOT:
return "NODE_NOT";
case NODE_MASGN:
return "NODE_MASGN";
case NODE_LASGN:
return "NODE_LASGN";
case NODE_DASGN:
return "NODE_DASGN";
case NODE_DASGN_CURR:
return "NODE_DASGN_CURR";
case NODE_GASGN:
return "NODE_GASGN";
case NODE_IASGN:
return "NODE_IASGN";
case NODE_CDECL:
return "NODE_CDECL";
case NODE_CVASGN:
return "NODE_CVASGN";
case NODE_CVDECL:
return "NODE_CVDECL";
case NODE_OP_ASGN1:
return "NODE_OP_ASGN1";
case NODE_OP_ASGN2:
return "NODE_OP_ASGN2";
case NODE_OP_ASGN_AND:
return "NODE_OP_ASGN_AND";
case NODE_OP_ASGN_OR:
return "NODE_OP_ASGN_OR";
case NODE_CALL:
return "NODE_CALL";
case NODE_FCALL:
return "NODE_FCALL";
case NODE_VCALL:
return "NODE_VCALL";
case NODE_SUPER:
return "NODE_SUPER";
case NODE_ZSUPER:
return "NODE_ZSUPER";
case NODE_ARRAY:
return "NODE_ARRAY";
case NODE_ZARRAY:
return "NODE_ZARRAY";
case NODE_VALUES:
return "NODE_VALUES";
case NODE_HASH:
return "NODE_HASH";
case NODE_RETURN:
return "NODE_RETURN";
case NODE_YIELD:
return "NODE_YIELD";
case NODE_LVAR:
return "NODE_LVAR";
case NODE_DVAR:
return "NODE_DVAR";
case NODE_GVAR:
return "NODE_GVAR";
case NODE_IVAR:
return "NODE_IVAR";
case NODE_CONST:
return "NODE_CONST";
case NODE_CVAR:
return "NODE_CVAR";
case NODE_NTH_REF:
return "NODE_NTH_REF";
case NODE_BACK_REF:
return "NODE_BACK_REF";
case NODE_MATCH:
return "NODE_MATCH";
case NODE_MATCH2:
return "NODE_MATCH2";
case NODE_MATCH3:
return "NODE_MATCH3";
case NODE_LIT:
return "NODE_LIT";
case NODE_STR:
return "NODE_STR";
case NODE_DSTR:
return "NODE_DSTR";
case NODE_XSTR:
return "NODE_XSTR";
case NODE_DXSTR:
return "NODE_DXSTR";
case NODE_EVSTR:
return "NODE_EVSTR";
case NODE_DREGX:
return "NODE_DREGX";
case NODE_DREGX_ONCE:
return "NODE_DREGX_ONCE";
case NODE_ARGS:
return "NODE_ARGS";
case NODE_POSTARG:
return "NODE_POSTARG";
case NODE_ARGSCAT:
return "NODE_ARGSCAT";
case NODE_ARGSPUSH:
return "NODE_ARGSPUSH";
case NODE_SPLAT:
return "NODE_SPLAT";
case NODE_TO_ARY:
return "NODE_TO_ARY";
case NODE_BLOCK_ARG:
return "NODE_BLOCK_ARG";
case NODE_BLOCK_PASS:
return "NODE_BLOCK_PASS";
case NODE_DEFN:
return "NODE_DEFN";
case NODE_DEFS:
return "NODE_DEFS";
case NODE_ALIAS:
return "NODE_ALIAS";
case NODE_VALIAS:
return "NODE_VALIAS";
case NODE_UNDEF:
return "NODE_UNDEF";
case NODE_CLASS:
return "NODE_CLASS";
case NODE_MODULE:
return "NODE_MODULE";
case NODE_SCLASS:
return "NODE_SCLASS";
case NODE_COLON2:
return "NODE_COLON2";
case NODE_COLON3:
return "NODE_COLON3";
case NODE_CREF:
return "NODE_CREF";
case NODE_DOT2:
return "NODE_DOT2";
case NODE_DOT3:
return "NODE_DOT3";
case NODE_FLIP2:
return "NODE_FLIP2";
case NODE_FLIP3:
return "NODE_FLIP3";
case NODE_ATTRSET:
return "NODE_ATTRSET";
case NODE_SELF:
return "NODE_SELF";
case NODE_NIL:
return "NODE_NIL";
case NODE_TRUE:
return "NODE_TRUE";
case NODE_FALSE:
return "NODE_FALSE";
case NODE_ERRINFO:
return "NODE_ERRINFO";
case NODE_DEFINED:
return "NODE_DEFINED";
case NODE_POSTEXE:
return "NODE_POSTEXE";
case NODE_ALLOCA:
return "NODE_ALLOCA";
case NODE_BMETHOD:
return "NODE_BMETHOD";
case NODE_MEMO:
return "NODE_MEMO";
case NODE_IFUNC:
return "NODE_IFUNC";
case NODE_DSYM:
return "NODE_DSYM";
case NODE_ATTRASGN:
return "NODE_ATTRASGN";
case NODE_PRELUDE:
return "NODE_PRELUDE";
case NODE_LAMBDA:
return "NODE_LAMBDA";
case NODE_OPTBLOCK:
return "NODE_OPTBLOCK";
case NODE_LAST:
return "NODE_LAST";
default:
rb_bug("unknown node (%d)", node);
return 0;
}
}
int
debug_node(NODE *node)
{
printf("node type: %d\n", nd_type(node));
printf("node name: %s\n", node_name(nd_type(node)));
printf("node filename: %s\n", node->nd_file);
return 0;
}
#define DECL_SYMBOL(name) \
static VALUE sym_##name
#define INIT_SYMBOL(name) \
sym_##name = ID2SYM(rb_intern(#name))
static VALUE
register_label(struct st_table *table, int idx)
{
VALUE sym;
char buff[0x20];
snprintf(buff, 0x20, "label_%u", idx);
sym = ID2SYM(rb_intern(buff));
st_insert(table, idx, sym);
return sym;
}
static VALUE
exception_type2symbol(VALUE type)
{
ID id;
switch(type) {
case CATCH_TYPE_RESCUE: id = rb_intern("rescue"); break;
case CATCH_TYPE_ENSURE: id = rb_intern("ensure"); break;
case CATCH_TYPE_RETRY: id = rb_intern("retry"); break;
case CATCH_TYPE_BREAK: id = rb_intern("break"); break;
case CATCH_TYPE_REDO: id = rb_intern("redo"); break;
case CATCH_TYPE_NEXT: id = rb_intern("next"); break;
default:
rb_bug("...");
}
return ID2SYM(id);
}
static int
cdhash_each(VALUE key, VALUE value, VALUE ary)
{
rb_ary_push(ary, key);
rb_ary_push(ary, value);
return ST_CONTINUE;
}
VALUE
iseq_data_to_ary(yarv_iseq_t *iseq)
{
int i, pos, opt = 0;
VALUE *seq;
VALUE val = rb_ary_new();
VALUE type; /* Symbol */
VALUE locals = rb_ary_new();
VALUE args = rb_ary_new();
VALUE body = rb_ary_new(); /* [[:insn1, ...], ...] */
VALUE nbody;
VALUE line = rb_ary_new();
VALUE exception = rb_ary_new(); /* [[....]] */
static VALUE insn_syms[YARV_MAX_INSTRUCTION_SIZE];
struct st_table *labels_table = st_init_numtable();
DECL_SYMBOL(toplevel);
DECL_SYMBOL(method);
DECL_SYMBOL(block);
DECL_SYMBOL(class);
DECL_SYMBOL(rescue);
DECL_SYMBOL(ensure);
DECL_SYMBOL(eval);
if (sym_toplevel == 0) {
int i;
for (i=0; i<YARV_MAX_INSTRUCTION_SIZE; i++) {
insn_syms[i] = ID2SYM(rb_intern(insn_name(i)));
}
INIT_SYMBOL(toplevel);
INIT_SYMBOL(method);
INIT_SYMBOL(block);
INIT_SYMBOL(class);
INIT_SYMBOL(rescue);
INIT_SYMBOL(ensure);
INIT_SYMBOL(eval);
}
/* type */
switch(iseq->type) {
case ISEQ_TYPE_TOP: type = sym_toplevel; break;
case ISEQ_TYPE_METHOD: type = sym_method; break;
case ISEQ_TYPE_BLOCK: type = sym_block; break;
case ISEQ_TYPE_CLASS: type = sym_class; break;
case ISEQ_TYPE_RESCUE: type = sym_rescue; break;
case ISEQ_TYPE_ENSURE: type = sym_ensure; break;
case ISEQ_TYPE_EVAL: type = sym_eval; break;
default: rb_bug("unsupported iseq type");
};
if (iseq->type == ISEQ_TYPE_METHOD ||
iseq->type == ISEQ_TYPE_TOP ||
iseq->type == ISEQ_TYPE_CLASS) {
opt = 1;
}
/* locals */
for (i=opt; i<iseq->local_size; i++) {
ID lid = iseq->local_tbl[i];
if (lid) {
rb_ary_push(locals, ID2SYM(lid));
}
else {
rb_ary_push(locals, ID2SYM(rb_intern("#arg_rest")));
}
}
/* args */
{
/*
* [argc, # argc
* [label1, label2, ...] # opts
* rest_iex,
* block_idx,
* ]
* or
* argc (Fixnum) # arg_simple
*/
VALUE arg_opt_labels = rb_ary_new();
int j;
for (j=0; j<iseq->arg_opts; j++) {
rb_ary_push(arg_opt_labels,
register_label(labels_table, iseq->arg_opt_tbl[j]));
}
/* commit */
if (iseq->arg_simple) {
args = INT2FIX(iseq->argc);
}
else {
rb_ary_push(args, INT2FIX(iseq->argc));
rb_ary_push(args, INT2FIX(iseq->arg_opts));
rb_ary_push(args, arg_opt_labels);
rb_ary_push(args, INT2FIX(iseq->arg_rest));
rb_ary_push(args, INT2FIX(iseq->arg_block));
}
}
/* body */
for (seq = iseq->iseq; seq < iseq->iseq + iseq->size; ) {
VALUE ary = rb_ary_new();
VALUE insn = *seq++;
int j, len = insn_len(insn);
VALUE *nseq = seq + len - 1;
rb_ary_push(ary, insn_syms[insn]);
for (j=0; j<len-1; j++, seq++) {
switch (insn_op_type(insn, j)) {
case TS_OFFSET: {
unsigned int idx = nseq - iseq->iseq + *seq;
rb_ary_push(ary, register_label(labels_table, idx));
break;
}
case TS_LINDEX:
case TS_DINDEX:
case TS_NUM:
rb_ary_push(ary, INT2FIX(*seq));
break;
case TS_VALUE:
rb_ary_push(ary, *seq);
break;
case TS_ISEQ:
{
yarv_iseq_t *iseq = (yarv_iseq_t *)*seq;
if (iseq) {
VALUE val = iseq_data_to_ary(iseq);
rb_ary_push(ary, val);
}
else {
rb_ary_push(ary, Qnil);
}
}
break;
case TS_GENTRY:
{
struct global_entry *entry = (struct global_entry *)*seq;
rb_ary_push(ary, ID2SYM(entry->id));
}
break;
case TS_IC:
rb_ary_push(ary, Qnil);
break;
case TS_ID:
rb_ary_push(ary, ID2SYM(*seq));
break;
case TS_CDHASH:
{
VALUE hash = *seq;
VALUE val = rb_ary_new();
int i;
rb_hash_foreach(hash, cdhash_each, val);
for (i=0; i<RARRAY_LEN(val); i+=2) {
VALUE pos = FIX2INT(rb_ary_entry(val, i+1));
unsigned int idx = nseq - iseq->iseq + pos;
rb_ary_store(val, i+1,
register_label(labels_table, idx));
}
rb_ary_push(ary, val);
}
break;
default:
rb_bug("unknown operand: %c", insn_op_type(insn, j));
}
}
rb_ary_push(body, ary);
}
nbody = body;
/* exception */
for (i=0; i<iseq->catch_table_size; i++) {
VALUE ary = rb_ary_new();
struct catch_table_entry *entry = &iseq->catch_table[i];
rb_ary_push(ary, exception_type2symbol(entry->type));
if (entry->iseq) {
yarv_iseq_t *eiseq;
GetISeqPtr(entry->iseq, eiseq);
rb_ary_push(ary, iseq_data_to_ary(eiseq));
}
else {
rb_ary_push(ary, Qnil);
}
rb_ary_push(ary, register_label(labels_table, entry->start));
rb_ary_push(ary, register_label(labels_table, entry->end));
rb_ary_push(ary, register_label(labels_table, entry->cont));
rb_ary_push(ary, INT2FIX(entry->sp));
rb_ary_push(exception, ary);
}
/* make body with labels */
body = rb_ary_new();
for (i=0, pos=0; i<RARRAY_LEN(nbody); i++) {
VALUE ary = RARRAY_PTR(nbody)[i];
VALUE label;
if (st_lookup(labels_table, pos, &label)) {
rb_ary_push(body, label);
}
rb_ary_push(body, ary);
pos += RARRAY_LEN(ary);
}
st_free_table(labels_table);
/* build array */
/* [magic, major_version, minor_version, format_type, misc,
* name, filename, line,
* type, args, vars, exception_table, body]
*/
rb_ary_push(val, rb_str_new2("YARVInstructionSimpledataFormat"));
rb_ary_push(val, INT2FIX(1));
rb_ary_push(val, INT2FIX(1));
rb_ary_push(val, INT2FIX(1));
rb_ary_push(val, Qnil);
rb_ary_push(val, iseq->name);
rb_ary_push(val, iseq->file_name);
rb_ary_push(val, line);
rb_ary_push(val, type);
rb_ary_push(val, locals);
rb_ary_push(val, args);
rb_ary_push(val, exception);
rb_ary_push(val, body);
return val;
}
struct st_table *
insn_make_insn_table(void)
{
struct st_table *table;
int i;
table = st_init_numtable();
for (i=0; i<YARV_MAX_INSTRUCTION_SIZE; i++) {
st_insert(table, ID2SYM(rb_intern(insn_name(i))), i);
}
return table;
}
void
Init_ISeq(void)
{
/* declare YARVCore::InstructionSequence */
cYarvISeq = rb_define_class_under(mYarvCore, "InstructionSequence", rb_cObject);
rb_define_alloc_func(cYarvISeq, iseq_alloc);
rb_define_method(cYarvISeq, "inspect", iseq_inspect, 0);
rb_define_method(cYarvISeq, "disasm", iseq_disasm, 0);
rb_define_method(cYarvISeq, "to_a", iseq_to_a, 0);
rb_define_method(cYarvISeq, "eval", iseq_eval, 0);
rb_define_singleton_method(cYarvISeq, "load", iseq_s_load, -1);
rb_define_singleton_method(cYarvISeq, "compile", iseq_s_compile, -1);
rb_define_singleton_method(cYarvISeq, "new", iseq_s_compile, -1);
rb_define_singleton_method(cYarvISeq, "compile_file", iseq_s_compile_file, -1);
rb_define_singleton_method(cYarvISeq, "compile_option=",
iseq_s_compile_option_set, 1);
}
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