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compile.c
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/**********************************************************************
compile.c - ruby node tree -> VM instruction sequence
$Author$
created at: 04/01/01 03:42:15 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include "ruby/ruby.h"
#define USE_INSN_STACK_INCREASE 1
#include "vm_core.h"
#include "iseq.h"
#include "insns.inc"
#include "insns_info.inc"
#define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
#define FIXNUM_INC(n, i) ((n)+(INT2FIX(i)&~FIXNUM_FLAG))
#define FIXNUM_OR(n, i) ((n)|INT2FIX(i))
typedef struct iseq_link_element {
enum {
ISEQ_ELEMENT_NONE = INT2FIX(0x00),
ISEQ_ELEMENT_LABEL = INT2FIX(0x01),
ISEQ_ELEMENT_INSN = INT2FIX(0x02),
ISEQ_ELEMENT_ADJUST = INT2FIX(0x03)
} type;
struct iseq_link_element *next;
struct iseq_link_element *prev;
} LINK_ELEMENT;
typedef struct iseq_link_anchor {
LINK_ELEMENT anchor;
LINK_ELEMENT *last;
} LINK_ANCHOR;
typedef struct iseq_label_data {
LINK_ELEMENT link;
int label_no;
int position;
int sc_state;
int set;
int sp;
} LABEL;
typedef struct iseq_insn_data {
LINK_ELEMENT link;
enum ruby_vminsn_type insn_id;
int line_no;
int operand_size;
int sc_state;
VALUE *operands;
} INSN;
typedef struct iseq_adjust_data {
LINK_ELEMENT link;
LABEL *label;
int line_no;
} ADJUST;
struct ensure_range {
LABEL *begin;
LABEL *end;
struct ensure_range *next;
};
struct iseq_compile_data_ensure_node_stack {
NODE *ensure_node;
struct iseq_compile_data_ensure_node_stack *prev;
struct ensure_range *erange;
};
/**
* debug function(macro) interface depend on CPDEBUG
* if it is less than 0, runtime option is in effect.
*
* debug level:
* 0: no debug output
* 1: show node type
* 2: show node important parameters
* ...
* 5: show other parameters
* 10: show every AST array
*/
#ifndef CPDEBUG
#define CPDEBUG 0
#endif
#if CPDEBUG >= 0
#define compile_debug CPDEBUG
#else
#define compile_debug iseq->compile_data->option->debug_level
#endif
NORETURN(PRINTF_ARGS(void rb_compile_bug(const char*, int, const char*, ...), 3, 4));
#if CPDEBUG
#define compile_debug_print_indent(level) \
ruby_debug_print_indent(level, compile_debug, gl_node_level * 2)
#define debugp(header, value) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_value(1, compile_debug, header, value))
#define debugi(header, id) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_id(1, compile_debug, header, id))
#define debugp_param(header, value) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_value(1, compile_debug, header, value))
#define debugp_verbose(header, value) (void) \
(compile_debug_print_indent(2) && \
ruby_debug_print_value(2, compile_debug, header, value))
#define debugp_verbose_node(header, value) (void) \
(compile_debug_print_indent(10) && \
ruby_debug_print_value(10, compile_debug, header, value))
#define debug_node_start(node) ((void) \
(compile_debug_print_indent(1) && \
(ruby_debug_print_node(1, CPDEBUG, "", (NODE *)node), gl_node_level)), \
gl_node_level++)
#define debug_node_end() gl_node_level --;
#else
static inline ID
r_id(ID id)
{
return id;
}
static inline VALUE
r_value(VALUE value)
{
return value;
}
#define debugi(header, id) r_id(id)
#define debugp(header, value) r_value(value)
#define debugp_verbose(header, value) r_value(value)
#define debugp_verbose_node(header, value) r_value(value)
#define debugp_param(header, value) r_value(value)
#define debug_node_start(node) ((void)0)
#define debug_node_end() ((void)0)
#endif
#if CPDEBUG > 1 || CPDEBUG < 0
PRINTF_ARGS(void ruby_debug_printf(const char*, ...), 1, 2);
#define debugs if (compile_debug_print_indent(1)) ruby_debug_printf
#define debug_compile(msg, v) ((void)(compile_debug_print_indent(1) && fputs(msg, stderr)), (v))
#else
#define debugs if(0)printf
#define debug_compile(msg, v) (v)
#endif
/* create new label */
#define NEW_LABEL(l) new_label_body(iseq, l)
#define iseq_filename(iseq) \
(((rb_iseq_t*)DATA_PTR(iseq))->filename)
#define iseq_filepath(iseq) \
(((rb_iseq_t*)DATA_PTR(iseq))->filepath)
#define NEW_ISEQVAL(node, name, type, line_no) \
new_child_iseq(iseq, node, name, 0, type, line_no)
#define NEW_CHILD_ISEQVAL(node, name, type, line_no) \
new_child_iseq(iseq, node, name, iseq->self, type, line_no)
/* add instructions */
#define ADD_SEQ(seq1, seq2) \
APPEND_LIST(seq1, seq2)
/* add an instruction */
#define ADD_INSN(seq, line, insn) \
ADD_ELEM(seq, (LINK_ELEMENT *) new_insn_body(iseq, line, BIN(insn), 0))
/* add an instruction with label operand */
#define ADD_INSNL(seq, line, insn, label) \
ADD_ELEM(seq, (LINK_ELEMENT *) \
new_insn_body(iseq, line, BIN(insn), 1, (VALUE)label))
/* add an instruction with some operands (1, 2, 3, 5) */
#define ADD_INSN1(seq, line, insn, op1) \
ADD_ELEM(seq, (LINK_ELEMENT *) \
new_insn_body(iseq, line, BIN(insn), 1, (VALUE)op1))
#define ADD_INSN2(seq, line, insn, op1, op2) \
ADD_ELEM(seq, (LINK_ELEMENT *) \
new_insn_body(iseq, line, BIN(insn), 2, (VALUE)op1, (VALUE)op2))
#define ADD_INSN3(seq, line, insn, op1, op2, op3) \
ADD_ELEM(seq, (LINK_ELEMENT *) \
new_insn_body(iseq, line, BIN(insn), 3, (VALUE)op1, (VALUE)op2, (VALUE)op3))
/* Specific Insn factory */
#define ADD_SEND(seq, line, id, argc) \
ADD_SEND_R(seq, line, id, argc, (VALUE)Qfalse, (VALUE)INT2FIX(0))
#define ADD_CALL_RECEIVER(seq, line) \
ADD_INSN(seq, line, putnil)
#define ADD_CALL(seq, line, id, argc) \
ADD_SEND_R(seq, line, id, argc, (VALUE)Qfalse, (VALUE)INT2FIX(VM_CALL_FCALL_BIT))
#define ADD_CALL_WITH_BLOCK(seq, line, id, argc, block) \
ADD_SEND_R(seq, line, id, argc, block, (VALUE)INT2FIX(VM_CALL_FCALL_BIT))
#define ADD_SEND_R(seq, line, id, argc, block, flag) \
ADD_ELEM(seq, (LINK_ELEMENT *) \
new_insn_send(iseq, line, \
(VALUE)id, (VALUE)argc, (VALUE)block, (VALUE)flag))
#define ADD_TRACE(seq, line, event) \
do { \
if ((event) == RUBY_EVENT_LINE && iseq->coverage && \
(line) != iseq->compile_data->last_coverable_line) { \
RARRAY_PTR(iseq->coverage)[(line) - 1] = INT2FIX(0); \
iseq->compile_data->last_coverable_line = (line); \
ADD_INSN1(seq, line, trace, INT2FIX(RUBY_EVENT_COVERAGE)); \
} \
if (iseq->compile_data->option->trace_instruction) { \
ADD_INSN1(seq, line, trace, INT2FIX(event)); \
} \
}while(0);
/* add label */
#define ADD_LABEL(seq, label) \
ADD_ELEM(seq, (LINK_ELEMENT *) label)
#define ADD_ADJUST(seq, line, label) \
ADD_ELEM(seq, (LINK_ELEMENT *) new_adjust_body(iseq, label, line))
#define ADD_ADJUST_RESTORE(seq, label) \
ADD_ELEM(seq, (LINK_ELEMENT *) new_adjust_body(iseq, label, -1))
#define ADD_CATCH_ENTRY(type, ls, le, iseqv, lc) \
(rb_ary_push(iseq->compile_data->catch_table_ary, \
rb_ary_new3(5, type, \
(VALUE)(ls) | 1, (VALUE)(le) | 1, \
iseqv, (VALUE)(lc) | 1)))
/* compile node */
#define COMPILE(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, anchor, node, 0)))
/* compile node, this node's value will be popped */
#define COMPILE_POPED(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, anchor, node, 1)))
/* compile node, which is popped when 'poped' is true */
#define COMPILE_(anchor, desc, node, poped) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, anchor, node, poped)))
#define OPERAND_AT(insn, idx) \
(((INSN*)(insn))->operands[idx])
#define INSN_OF(insn) \
(((INSN*)(insn))->insn_id)
/* error */
#define COMPILE_ERROR(strs) \
{ \
VALUE tmp = GET_THREAD()->errinfo; \
if (compile_debug) rb_compile_bug strs; \
GET_THREAD()->errinfo = iseq->compile_data->err_info; \
rb_compile_error strs; \
iseq->compile_data->err_info = GET_THREAD()->errinfo; \
GET_THREAD()->errinfo = tmp; \
ret = 0; \
break; \
}
#define ERROR_ARGS ruby_sourcefile, nd_line(node),
#define COMPILE_OK 1
#define COMPILE_NG 0
/* leave name uninitialized so that compiler warn if INIT_ANCHOR is
* missing */
#define DECL_ANCHOR(name) \
LINK_ANCHOR *name, name##_body__ = {{0,},}
#define INIT_ANCHOR(name) \
(name##_body__.last = &name##_body__.anchor, name = &name##_body__)
#define hide_obj(obj) do {OBJ_FREEZE(obj); RBASIC(obj)->klass = 0;} while (0)
#include "optinsn.inc"
#if OPT_INSTRUCTIONS_UNIFICATION
#include "optunifs.inc"
#endif
/* for debug */
#if CPDEBUG < 0
#define ISEQ_ARG iseq,
#define ISEQ_ARG_DECLARE rb_iseq_t *iseq,
#else
#define ISEQ_ARG
#define ISEQ_ARG_DECLARE
#endif
#if CPDEBUG
#define gl_node_level iseq->compile_data->node_level
#if 0
static void debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor);
#endif
#endif
static void dump_disasm_list(LINK_ELEMENT *elem);
static int insn_data_length(INSN *iobj);
static int insn_data_line_no(INSN *iobj);
static int calc_sp_depth(int depth, INSN *iobj);
static void ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor, LINK_ELEMENT *elem);
static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...);
static LABEL *new_label_body(rb_iseq_t *iseq, long line);
static ADJUST *new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line);
static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * n, int);
static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_local_table(rb_iseq_t *iseq, ID *tbl);
static int iseq_set_exception_local_table(rb_iseq_t *iseq);
static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * node);
static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_exception_table(rb_iseq_t *iseq);
static int iseq_set_optargs_table(rb_iseq_t *iseq);
/*
* To make Array to LinkedList, use link_anchor
*/
static void
verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *anchor)
{
#if CPDEBUG
int flag = 0;
LINK_ELEMENT *list, *plist;
if (!compile_debug) return;
list = anchor->anchor.next;
plist = &anchor->anchor;
while (list) {
if (plist != list->prev) {
flag += 1;
}
plist = list;
list = list->next;
}
if (anchor->last != plist && anchor->last != 0) {
flag |= 0x70000;
}
if (flag != 0) {
rb_bug("list verify error: %08x (%s)", flag, info);
}
#endif
}
#if CPDEBUG < 0
#define verify_list(info, anchor) verify_list(iseq, info, anchor)
#endif
/*
* elem1, elem2 => elem1, elem2, elem
*/
static void
ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor, LINK_ELEMENT *elem)
{
elem->prev = anchor->last;
anchor->last->next = elem;
anchor->last = elem;
verify_list("add", anchor);
}
#if CPDEBUG < 0
#define ADD_ELEM(anchor, elem) ADD_ELEM(iseq, anchor, elem)
#endif
static int
iseq_add_mark_object(rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(iseq->mark_ary, v);
}
return COMPILE_OK;
}
#define ruby_sourcefile RSTRING_PTR(iseq->filename)
static int
iseq_add_mark_object_compile_time(rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(iseq->compile_data->mark_ary, v);
}
return COMPILE_OK;
}
VALUE
rb_iseq_compile_node(VALUE self, NODE *node)
{
DECL_ANCHOR(ret);
rb_iseq_t *iseq;
INIT_ANCHOR(ret);
GetISeqPtr(self, iseq);
if (node == 0) {
COMPILE(ret, "nil", node);
iseq_set_local_table(iseq, 0);
}
else if (nd_type(node) == NODE_SCOPE) {
/* iseq type of top, method, class, block */
iseq_set_local_table(iseq, node->nd_tbl);
iseq_set_arguments(iseq, ret, node->nd_args);
switch (iseq->type) {
case ISEQ_TYPE_BLOCK: {
LABEL *start = iseq->compile_data->start_label = NEW_LABEL(0);
LABEL *end = iseq->compile_data->end_label = NEW_LABEL(0);
ADD_LABEL(ret, start);
COMPILE(ret, "block body", node->nd_body);
ADD_LABEL(ret, end);
/* wide range catch handler must put at last */
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, 0, start);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, 0, end);
break;
}
case ISEQ_TYPE_CLASS: {
ADD_TRACE(ret, FIX2INT(iseq->line_no), RUBY_EVENT_CLASS);
COMPILE(ret, "scoped node", node->nd_body);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_END);
break;
}
case ISEQ_TYPE_METHOD: {
ADD_TRACE(ret, FIX2INT(iseq->line_no), RUBY_EVENT_CALL);
COMPILE(ret, "scoped node", node->nd_body);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_RETURN);
break;
}
default: {
COMPILE(ret, "scoped node", node->nd_body);
break;
}
}
}
else {
switch (iseq->type) {
case ISEQ_TYPE_METHOD:
case ISEQ_TYPE_CLASS:
case ISEQ_TYPE_BLOCK:
case ISEQ_TYPE_EVAL:
case ISEQ_TYPE_MAIN:
case ISEQ_TYPE_TOP:
rb_compile_error(ERROR_ARGS "compile/should not be reached: %s:%d",
__FILE__, __LINE__);
break;
case ISEQ_TYPE_RESCUE:
iseq_set_exception_local_table(iseq);
COMPILE(ret, "rescue", node);
break;
case ISEQ_TYPE_ENSURE:
iseq_set_exception_local_table(iseq);
COMPILE_POPED(ret, "ensure", node);
break;
case ISEQ_TYPE_DEFINED_GUARD:
iseq_set_local_table(iseq, 0);
COMPILE(ret, "defined guard", node);
break;
default:
rb_bug("unknown scope");
}
}
if (iseq->type == ISEQ_TYPE_RESCUE || iseq->type == ISEQ_TYPE_ENSURE) {
ADD_INSN2(ret, 0, getdynamic, INT2FIX(2), INT2FIX(0));
ADD_INSN1(ret, 0, throw, INT2FIX(0) /* continue throw */ );
}
else {
ADD_INSN(ret, iseq->compile_data->last_line, leave);
}
return iseq_setup(iseq, ret);
}
int
rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
{
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
extern const void **rb_vm_get_insns_address_table(void);
#if OPT_DIRECT_THREADED_CODE
const void * const *table = rb_vm_get_insns_address_table();
#else
const void * const *table = rb_vm_get_insns_address_table();
#endif
unsigned long i;
iseq->iseq_encoded = ALLOC_N(VALUE, iseq->iseq_size);
MEMCPY(iseq->iseq_encoded, iseq->iseq, VALUE, iseq->iseq_size);
for (i = 0; i < iseq->iseq_size; /* */ ) {
int insn = (int)iseq->iseq_encoded[i];
int len = insn_len(insn);
iseq->iseq_encoded[i] = (VALUE)table[insn];
i += len;
}
#else
iseq->iseq_encoded = iseq->iseq;
#endif
return COMPILE_OK;
}
/*********************************************/
/* definition of data structure for compiler */
/*********************************************/
static void *
compile_data_alloc(rb_iseq_t *iseq, size_t size)
{
void *ptr = 0;
struct iseq_compile_data_storage *storage =
iseq->compile_data->storage_current;
if (storage->pos + size > storage->size) {
unsigned long alloc_size = storage->size * 2;
retry:
if (alloc_size < size) {
alloc_size *= 2;
goto retry;
}
storage->next = (void *)ALLOC_N(char, alloc_size +
sizeof(struct
iseq_compile_data_storage));
storage = iseq->compile_data->storage_current = storage->next;
storage->next = 0;
storage->pos = 0;
storage->size = alloc_size;
storage->buff = (char *)(&storage->buff + 1);
}
ptr = (void *)&storage->buff[storage->pos];
storage->pos += size;
return ptr;
}
static INSN *
compile_data_alloc_insn(rb_iseq_t *iseq)
{
return (INSN *)compile_data_alloc(iseq, sizeof(INSN));
}
static LABEL *
compile_data_alloc_label(rb_iseq_t *iseq)
{
return (LABEL *)compile_data_alloc(iseq, sizeof(LABEL));
}
static ADJUST *
compile_data_alloc_adjust(rb_iseq_t *iseq)
{
return (ADJUST *)compile_data_alloc(iseq, sizeof(ADJUST));
}
/*
* elem1, elemX => elem1, elem2, elemX
*/
static void
INSERT_ELEM_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->next = elem1->next;
elem2->prev = elem1;
elem1->next = elem2;
if (elem2->next) {
elem2->next->prev = elem2;
}
}
#if 0 /* unused */
/*
* elemX, elem1 => elemX, elem2, elem1
*/
static void
INSERT_ELEM_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1;
elem1->prev = elem2;
if (elem2->prev) {
elem2->prev->next = elem2;
}
}
#endif
/*
* elemX, elem1, elemY => elemX, elem2, elemY
*/
static void
REPLACE_ELEM(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1->next;
if (elem1->prev) {
elem1->prev->next = elem2;
}
if (elem1->next) {
elem1->next->prev = elem2;
}
}
static void
REMOVE_ELEM(LINK_ELEMENT *elem)
{
elem->prev->next = elem->next;
if (elem->next) {
elem->next->prev = elem->prev;
}
}
static LINK_ELEMENT *
FIRST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->anchor.next;
}
#if 0 /* unused */
static LINK_ELEMENT *
LAST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->last;
}
#endif
static LINK_ELEMENT *
POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->last;
anchor->last = anchor->last->prev;
anchor->last->next = 0;
verify_list("pop", anchor);
return elem;
}
#if CPDEBUG < 0
#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, anchor)
#endif
#if 0 /* unused */
static LINK_ELEMENT *
SHIFT_ELEMENT(LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->anchor.next;
if (elem) {
anchor->anchor.next = elem->next;
}
return elem;
}
#endif
#if 0 /* unused */
static int
LIST_SIZE(LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->anchor.next;
int size = 0;
while (elem) {
size += 1;
elem = elem->next;
}
return size;
}
#endif
static int
LIST_SIZE_ZERO(LINK_ANCHOR *anchor)
{
if (anchor->anchor.next == 0) {
return 1;
}
else {
return 0;
}
}
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e1, e2, e3, e4, e5
* anc2: e4, e5 (broken)
*/
static void
APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
if (anc2->anchor.next) {
anc1->last->next = anc2->anchor.next;
anc2->anchor.next->prev = anc1->last;
anc1->last = anc2->last;
}
verify_list("append", anc1);
}
#if CPDEBUG < 0
#define APPEND_LIST(anc1, anc2) APPEND_LIST(iseq, anc1, anc2)
#endif
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e4, e5, e1, e2, e3
* anc2: e4, e5 (broken)
*/
static void
INSERT_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
if (anc2->anchor.next) {
LINK_ELEMENT *first = anc1->anchor.next;
anc1->anchor.next = anc2->anchor.next;
anc1->anchor.next->prev = &anc1->anchor;
anc2->last->next = first;
if (first) {
first->prev = anc2->last;
}
else {
anc1->last = anc2->last;
}
}
verify_list("append", anc1);
}
#if CPDEBUG < 0
#define INSERT_LIST(anc1, anc2) INSERT_LIST(iseq, anc1, anc2)
#endif
#if 0 /* unused */
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e4, e5
* anc2: e1, e2, e3
*/
static void
SWAP_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
LINK_ANCHOR tmp = *anc2;
/* it has bug */
*anc2 = *anc1;
*anc1 = tmp;
verify_list("swap1", anc1);
verify_list("swap2", anc2);
}
#if CPDEBUG < 0
#define SWAP_LIST(anc1, anc2) SWAP_LIST(iseq, anc1, anc2)
#endif
static LINK_ANCHOR *
REVERSE_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc)
{
LINK_ELEMENT *first, *last, *elem, *e;
first = &anc->anchor;
elem = first->next;
last = anc->last;
if (elem != 0) {
anc->anchor.next = last;
anc->last = elem;
}
else {
/* null list */
return anc;
}
while (elem) {
e = elem->next;
elem->next = elem->prev;
elem->prev = e;
elem = e;
}
first->next = last;
last->prev = first;
anc->last->next = 0;
verify_list("reverse", anc);
return anc;
}
#if CPDEBUG < 0
#define REVERSE_LIST(anc) REVERSE_LIST(iseq, anc)
#endif
#endif
#if CPDEBUG && 0
static void
debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
{
LINK_ELEMENT *list = FIRST_ELEMENT(anchor);
printf("----\n");
printf("anch: %p, frst: %p, last: %p\n", &anchor->anchor,
anchor->anchor.next, anchor->last);
while (list) {
printf("curr: %p, next: %p, prev: %p, type: %d\n", list, list->next,
list->prev, FIX2INT(list->type));
list = list->next;
}
printf("----\n");
dump_disasm_list(anchor->anchor.next);
verify_list("debug list", anchor);
}
#if CPDEBUG < 0
#define debug_list(anc) debug_list(iseq, anc)
#endif
#endif
static LABEL *
new_label_body(rb_iseq_t *iseq, long line)
{
LABEL *labelobj = compile_data_alloc_label(iseq);
labelobj->link.type = ISEQ_ELEMENT_LABEL;
labelobj->link.next = 0;
labelobj->label_no = iseq->compile_data->label_no++;
labelobj->sc_state = 0;
labelobj->sp = -1;
return labelobj;
}
static ADJUST *
new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line)
{
ADJUST *adjust = compile_data_alloc_adjust(iseq);
adjust->link.type = ISEQ_ELEMENT_ADJUST;
adjust->link.next = 0;
adjust->label = label;
adjust->line_no = line;
return adjust;
}
static INSN *
new_insn_core(rb_iseq_t *iseq, int line_no,
int insn_id, int argc, VALUE *argv)
{
INSN *iobj = compile_data_alloc_insn(iseq);
/* printf("insn_id: %d, line: %d\n", insn_id, line_no); */
iobj->link.type = ISEQ_ELEMENT_INSN;
iobj->link.next = 0;
iobj->insn_id = insn_id;
iobj->line_no = line_no;
iobj->operands = argv;
iobj->operand_size = argc;
iobj->sc_state = 0;
return iobj;
}
static INSN *
new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...)
{
VALUE *operands = 0;
va_list argv;
if (argc > 0) {
int i;
va_init_list(argv, argc);
operands = (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * argc);
for (i = 0; i < argc; i++) {
VALUE v = va_arg(argv, VALUE);
operands[i] = v;
}
va_end(argv);
}
return new_insn_core(iseq, line_no, insn_id, argc, operands);
}
static INSN *
new_insn_send(rb_iseq_t *iseq, int line_no,
VALUE id, VALUE argc, VALUE block, VALUE flag)
{
INSN *iobj = 0;
VALUE *operands =
(VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * 5);
operands[0] = id;
operands[1] = argc;
operands[2] = block;
operands[3] = flag;
operands[4] = INT2FIX(iseq->ic_size++);
iobj = new_insn_core(iseq, line_no, BIN(send), 5, operands);
return iobj;
}
static VALUE
new_child_iseq(rb_iseq_t *iseq, NODE *node,
VALUE name, VALUE parent, VALUE type, int line_no)
{
VALUE ret;
debugs("[new_child_iseq]> ---------------------------------------\n");
ret = rb_iseq_new_with_opt(node, name, iseq_filename(iseq->self), iseq_filepath(iseq->self), INT2FIX(line_no),
parent, type, iseq->compile_data->option);
debugs("[new_child_iseq]< ---------------------------------------\n");
iseq_add_mark_object(iseq, ret);
return ret;
}
static int
iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
{
/* debugs("[compile step 2] (iseq_array_to_linkedlist)\n"); */
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 3.1 (iseq_optimize)]\n");
iseq_optimize(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
if (iseq->compile_data->option->instructions_unification) {
debugs("[compile step 3.2 (iseq_insns_unification)]\n");
iseq_insns_unification(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
}
if (iseq->compile_data->option->stack_caching) {
debugs("[compile step 3.3 (iseq_set_sequence_stackcaching)]\n");
iseq_set_sequence_stackcaching(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
}
debugs("[compile step 4.1 (iseq_set_sequence)]\n");
iseq_set_sequence(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 4.2 (iseq_set_exception_table)]\n");
iseq_set_exception_table(iseq);
debugs("[compile step 4.3 (set_optargs_table)] \n");
iseq_set_optargs_table(iseq);
debugs("[compile step 5 (iseq_translate_threaded_code)] \n");
rb_iseq_translate_threaded_code(iseq);
if (compile_debug > 1) {
VALUE str = rb_iseq_disasm(iseq->self);
printf("%s\n", StringValueCStr(str));
fflush(stdout);
}
debugs("[compile step: finish]\n");
return 0;
}
static int
iseq_set_exception_local_table(rb_iseq_t *iseq)
{
ID id_dollar_bang;
CONST_ID(id_dollar_bang, "#$!");
iseq->local_table = (ID *)ALLOC_N(ID *, 1);
iseq->local_table_size = 1;
iseq->local_size = iseq->local_table_size + 1;
iseq->local_table[0] = id_dollar_bang;
return COMPILE_OK;
}
static int
get_dyna_var_idx_at_raw(rb_iseq_t *iseq, ID id)
{
int i;
for (i = 0; i < iseq->local_table_size; i++) {