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insns.def
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insns.def
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/** ##skip -*- mode:c; style:ruby; coding: utf-8 -*-
insns.def - YARV instruction definitions
$Author: $
created at: 04/01/01 01:17:55 JST
Copyright (C) 2004-2007 Koichi Sasada
*/
/** ##skip
instruction comment
@c: category
@e: english description
@j: japanese description
instruction form:
DEFINE_INSN
instruction_name
(instruction_operands, ..)
(pop_values, ..)
(return value)
{
.. // insn body
}
*/
/**
@c nop
@e nop
@j nop
*/
DEFINE_INSN
nop
()
()
()
{
/* none */
}
/**********************************************************/
/* deal with variables */
/**********************************************************/
/**
@c variable
@e Get local variable (pointed by `idx' and `level').
'level' indicates the nesting depth from the current block.
@j level, idx ใงๆๅฎใใใใญใผใซใซๅคๆฐใฎๅคใในใฟใใฏใซ็ฝฎใใ
level ใฏใใญใใฏใฎใในใใฌใใซใงใไฝๆฎตไธใใ็คบใใ
*/
DEFINE_INSN
getlocal
(lindex_t idx, rb_num_t level)
()
(VALUE val)
{
val = *(vm_get_ep(GET_EP(), level) - idx);
RB_DEBUG_COUNTER_INC(lvar_get);
(void)RB_DEBUG_COUNTER_INC_IF(lvar_get_dynamic, level > 0);
}
/**
@c variable
@e Set a local variable (pointed to by 'idx') as val.
'level' indicates the nesting depth from the current block.
@j level, idx ใงๆๅฎใใใใญใผใซใซๅคๆฐใฎๅคใ val ใซใใใ
level ใฏใใญใใฏใฎใในใใฌใใซใงใไฝๆฎตไธใใ็คบใใ
*/
DEFINE_INSN
setlocal
(lindex_t idx, rb_num_t level)
(VALUE val)
()
{
vm_env_write(vm_get_ep(GET_EP(), level), -(int)idx, val);
RB_DEBUG_COUNTER_INC(lvar_set);
(void)RB_DEBUG_COUNTER_INC_IF(lvar_set_dynamic, level > 0);
}
/**
@c variable
@e Get value of special local variable ($~, $_, ..).
@j ็นๆฎใชใญใผใซใซๅคๆฐ๏ผ$~, $_, ...๏ผใฎๅคใๅพใใ
*/
DEFINE_INSN
getspecial
(rb_num_t key, rb_num_t type)
()
(VALUE val)
{
val = vm_getspecial(th, GET_LEP(), key, type);
}
/**
@c variable
@e Set value of special local variable ($~, $_, ...) to obj.
@j ็นๅฅใชใญใผใซใซๅคๆฐ๏ผ$~, $_, ...๏ผใฎๅคใ่จญๅฎใใใ
*/
DEFINE_INSN
setspecial
(rb_num_t key)
(VALUE obj)
()
{
lep_svar_set(th, GET_LEP(), key, obj);
}
/**
@c variable
@e Get value of instance variable id of self.
@j self ใฎใคใณในใฟใณในๅคๆฐ id ใฎๅคใๅพใใ
*/
DEFINE_INSN
getinstancevariable
(ID id, IC ic)
()
(VALUE val)
{
val = vm_getinstancevariable(GET_SELF(), id, ic);
}
/**
@c variable
@e Set value of instance variable id of self to val.
@j self ใฎใคใณในใฟใณในๅคๆฐ id ใ val ใซใใใ
*/
DEFINE_INSN
setinstancevariable
(ID id, IC ic)
(VALUE val)
()
{
vm_setinstancevariable(GET_SELF(), id, val, ic);
}
/**
@c variable
@e Get value of class variable id of klass as val.
@j ็พๅจใฎในใณใผใใฎใฏใฉในๅคๆฐ id ใฎๅคใๅพใใ
*/
DEFINE_INSN
getclassvariable
(ID id)
()
(VALUE val)
{
val = rb_cvar_get(vm_get_cvar_base(rb_vm_get_cref(GET_EP()), GET_CFP()), id);
}
/**
@c variable
@e Set value of class variable id of klass as val.
@j klass ใฎใฏใฉในๅคๆฐ id ใ val ใซใใใ
*/
DEFINE_INSN
setclassvariable
(ID id)
(VALUE val)
()
{
vm_ensure_not_refinement_module(GET_SELF());
rb_cvar_set(vm_get_cvar_base(rb_vm_get_cref(GET_EP()), GET_CFP()), id, val);
}
/**
@c variable
@e
Get constant variable id. If klass is Qnil, constants
are searched in the current scope. If klass is Qfalse, constants
are searched as top level constants. Otherwise, get constant under klass
class or module.
@j ๅฎๆฐ id ใฎๅคใๅพใใ
klass ใ Qnil ใชใใใใฎในใณใผใใงๅพใใใๅฎๆฐใฎๅคใๅพใใ
Qfalse ใชใใใใใใฌใใซในใณใผใใๅพใใ
ใใไปฅๅคใชใใklass ใฏใฉในใฎไธใฎๅฎๆฐใๅพใใ
*/
DEFINE_INSN
getconstant
(ID id)
(VALUE klass)
(VALUE val)
{
val = vm_get_ev_const(th, klass, id, 0);
}
/**
@c variable
@e
Set constant variable id. If klass is Qfalse, constant
is able to access in this scope. if klass is Qnil, set
top level constant. otherwise, set constant under klass
class or module.
@j ๅฎๆฐ id ใฎๅคใ val ใซใใใ
klass ใ Qfalse ใชใใใใฎในใณใผใใงๅพใใใๅฎๆฐ id ใฎๅคใ่จญๅฎใใใ
Qnil ใชใใใใใใฌใใซในใณใผใใฎๅคใ่จญๅฎใใใ
ใใไปฅๅคใชใใklass ใฏใฉในใฎไธใฎๅฎๆฐใ่จญๅฎใใใ
*/
DEFINE_INSN
setconstant
(ID id)
(VALUE val, VALUE cbase)
()
{
vm_check_if_namespace(cbase);
vm_ensure_not_refinement_module(GET_SELF());
rb_const_set(cbase, id, val);
}
/**
@c variable
@e get global variable id.
@j ใฐใญใผใใซๅคๆฐ id ใฎๅคใๅพใใ
*/
DEFINE_INSN
getglobal
(GENTRY entry)
()
(VALUE val)
{
val = GET_GLOBAL((VALUE)entry);
}
/**
@c variable
@e set global variable id as val.
@j ใฐใญใผใใซๅคๆฐ id ใฎๅคใ่จญๅฎใใใ
*/
DEFINE_INSN
setglobal
(GENTRY entry)
(VALUE val)
()
{
SET_GLOBAL((VALUE)entry, val);
}
/**********************************************************/
/* deal with values */
/**********************************************************/
/**
@c put
@e put nil to stack.
@j ในใฟใใฏใซ nil ใใใใทใฅใใใ
*/
DEFINE_INSN
putnil
()
()
(VALUE val)
{
val = Qnil;
}
/**
@c put
@e put self.
@j ในใฟใใฏใซ self ใใใใทใฅใใใ
*/
DEFINE_INSN
putself
()
()
(VALUE val)
{
val = GET_SELF();
}
/**
@c put
@e put some object.
i.e. Fixnum, true, false, nil, and so on.
@j ใชใใธใงใฏใ val ใในใฟใใฏใซใใใทใฅใใใ
i.e. Fixnum, true, false, nil, and so on.
*/
DEFINE_INSN
putobject
(VALUE val)
()
(VALUE val)
{
/* */
}
/**
@c put
@e put special object. "value_type" is for expansion.
@j ็นๅฅใชใชใใธใงใฏใ val ใในใฟใใฏใซใใใทใฅใใใ
ใชใใธใงใฏใใฎ็จฎ้กใฏ value_type ใซใใ๏ผ
*/
DEFINE_INSN
putspecialobject
(rb_num_t value_type)
()
(VALUE val)
{
enum vm_special_object_type type;
type = (enum vm_special_object_type)value_type;
val = vm_get_special_object(GET_EP(), type);
}
/**
@c put
@e put iseq value.
@j iseq ใในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
putiseq
(ISEQ iseq)
()
(VALUE ret)
{
ret = (VALUE)iseq;
}
/**
@c put
@e put string val. string will be copied.
@j ๆๅญๅใใณใใผใใฆในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
putstring
(VALUE str)
()
(VALUE val)
{
val = rb_str_resurrect(str);
}
/**
@c put
@e put concatenate strings
@j ในใฟใใฏใใใใฎๆๅญๅใ n ๅ้ฃ็ตใ๏ผ็ตๆใในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
concatstrings
(rb_num_t num)
(...)
(VALUE val) // inc += 1 - num;
{
val = rb_str_concat_literals(num, STACK_ADDR_FROM_TOP(num));
POPN(num);
}
/**
@c put
@e push the result of to_s.
@j to_s ใฎ็ตๆใในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
tostring
()
(VALUE val)
(VALUE val)
{
val = rb_obj_as_string(val);
}
/**
@c put
@e Freeze (dynamically) created strings. if debug_info is given, set it.
@j ๏ผๅใ่พผใฟ๏ผๆๅญๅใ freeze ใใใใใใdebug_info ใไธใใใใฆใใใฐใใใใ่จญๅฎใใใ
*/
DEFINE_INSN
freezestring
(VALUE debug_info)
(VALUE str)
(VALUE str)
{
vm_freezestring(str, debug_info);
}
/**
@c put
@e compile str to Regexp and push it.
opt is the option for the Regexp.
@j ๆๅญๅ str ใๆญฃ่ฆ่กจ็พใซใณใณใใคใซใใฆในใฟใใฏใซใใใทใฅใใใ
ใณใณใใคใซๆ๏ผopt ใๆญฃ่ฆ่กจ็พใฎใชใใทใงใณใจใใใ
*/
DEFINE_INSN
toregexp
(rb_num_t opt, rb_num_t cnt)
(...)
(VALUE val) // inc += 1 - cnt;
{
VALUE rb_reg_new_ary(VALUE ary, int options);
VALUE rb_ary_tmp_new_from_values(VALUE, long, const VALUE *);
const VALUE ary = rb_ary_tmp_new_from_values(0, cnt, STACK_ADDR_FROM_TOP(cnt));
POPN(cnt);
val = rb_reg_new_ary(ary, (int)opt);
rb_ary_clear(ary);
}
/**
@c put
@e put new array initialized with num values on the stack.
@j ๆฐใใ้
ๅใในใฟใใฏไธใฎ num ๅใฎๅคใงๅๆๅใใฆ็ๆใใใใทใฅใใใ
*/
DEFINE_INSN
newarray
(rb_num_t num)
(...)
(VALUE val) // inc += 1 - num;
{
val = rb_ary_new4(num, STACK_ADDR_FROM_TOP(num));
POPN(num);
}
/**
@c put
@e dup array
@j ้
ๅ ary ใ dup ใใฆในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
duparray
(VALUE ary)
()
(VALUE val)
{
val = rb_ary_resurrect(ary);
}
/**
@c put
@e if TOS is an array expand, expand it to num objects.
if the number of the array is less than num, push nils to fill.
if it is greater than num, exceeding elements are dropped.
unless TOS is an array, push num - 1 nils.
if flags is non-zero, push the array of the rest elements.
flag: 0x01 - rest args array
flag: 0x02 - for postarg
flag: 0x04 - reverse?
@j ในใฟใใฏใใใใฎใชใใธใงใฏใใ้
ๅใงใใใฐใใใใๅฑ้ใใใ
้
ๅใชใใธใงใฏใใฎ่ฆ็ด ๆฐใ numไปฅไธใชใใฐใไปฃใใใซ nil ใ็ฉใใnumไปฅไธใชใใ
numไปฅไธใฎ่ฆ็ด ใฏๅใๆจใฆใใ
้
ๅใชใใธใงใฏใใงใชใใใฐใnum - 1 ๅใฎ nil ใ็ฉใใ
ใใ flag ใ็ใชใใๆฎใ่ฆ็ด ใฎ้
ๅใ็ฉใ
flag: 0x01 - ๆๅพใ้
ๅใซ
flag: 0x02 - postarg ็จ
flag: 0x04 - reverse?
*/
DEFINE_INSN
expandarray
(rb_num_t num, rb_num_t flag)
(..., VALUE ary)
(...) // inc += num - 1 + (flag & 1 ? 1 : 0);
{
vm_expandarray(GET_CFP(), ary, num, (int)flag);
}
/**
@c put
@e concat two arrays
@j ไบใคใฎ้
ๅ ary1, ary2 ใ้ฃ็ตใในใฟใใฏใธใใใทใฅใใใ
*/
DEFINE_INSN
concatarray
()
(VALUE ary1, VALUE ary2)
(VALUE ary)
{
ary = vm_concat_array(ary1, ary2);
}
/**
@c put
@e call to_a on array ary to splat
@j splat ใฎใใใซ้
ๅ ary ใซๅฏพใใฆ to_a ใๅผใณๅบใใ
*/
DEFINE_INSN
splatarray
(VALUE flag)
(VALUE ary)
(VALUE obj)
{
obj = vm_splat_array(flag, ary);
}
/**
@c put
@e put new Hash from n elements. n must be an even number.
@j ๆฐใใใใใทใฅใในใฟใใฏใใใใฎ n ๅใๅๆๅคใจใใฆ็ๆใใใ
n ใฏใญใผใจๅคใฎใใขใชใฎใง 2 ใฎๅๆฐใงใชใใใฐใชใใชใใ
*/
DEFINE_INSN
newhash
(rb_num_t num)
(...)
(VALUE val) // inc += 1 - num;
{
RUBY_DTRACE_CREATE_HOOK(HASH, num);
val = rb_hash_new();
if (num) {
rb_hash_bulk_insert(num, STACK_ADDR_FROM_TOP(num), val);
}
POPN(num);
}
/**
@c put
@e put new Range object.(Range.new(low, high, flag))
@j Range.new(low, high, flag) ใฎใใใชใชใใธใงใฏใใ็ๆใในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
newrange
(rb_num_t flag)
(VALUE low, VALUE high)
(VALUE val)
{
val = rb_range_new(low, high, (int)flag);
}
/**********************************************************/
/* deal with stack operation */
/**********************************************************/
/**
@c stack
@e pop from stack.
@j ในใฟใใฏใใไธใคใใใใใใ
*/
DEFINE_INSN
pop
()
(VALUE val)
()
{
(void)val;
/* none */
}
/**
@c stack
@e duplicate stack top.
@j ในใฟใใฏใใใใใณใใผใใฆในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
dup
()
(VALUE val)
(VALUE val1, VALUE val2)
{
val1 = val2 = val;
}
/**
@c stack
@e duplicate stack top n elements
@j ในใฟใใฏใใใใฎ n ๅใใณใใผใใฆในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
dupn
(rb_num_t n)
(...)
(...) // inc += n;
{
void *dst = GET_SP();
void *src = STACK_ADDR_FROM_TOP(n);
INC_SP(n); /* alloca */
MEMCPY(dst, src, VALUE, n);
}
/**
@c stack
@e swap top 2 vals
@j ในใฟใใฏใใใใฎ 2 ใคใฎๅคใไบคๆใใใ
*/
DEFINE_INSN
swap
()
(VALUE val, VALUE obj)
(VALUE obj, VALUE val)
{
/* none */
}
/**
@c stack
@e reverse stack top N order.
@j ในใฟใใฏใใใใฎ n ๅใฎๅคใ้่ปขใใใ
*/
DEFINE_INSN
reverse
(rb_num_t n)
(...)
(...) // inc += 0;
{
rb_num_t i;
VALUE *sp = STACK_ADDR_FROM_TOP(n);
for (i=0; i<n/2; i++) {
VALUE v0 = sp[i];
VALUE v1 = TOPN(i);
sp[i] = v1;
TOPN(i) = v0;
}
}
/**
@c stack
@e for stack caching.
@j ในใฟใใฏใญใฃใใทใณใฐใฎ็ถๆ
ใ่ชฟๆดใใใใใซๅฟ
่ฆใชๅฝไปคใ
*/
DEFINE_INSN
reput
()
(..., VALUE val)
(VALUE val) // inc += 0;
{
/* none */
}
/**
@c stack
@e get nth stack value from stack top
@j ในใฟใใฏใใใใใ n ๅ็ฎใในใฟใใฏใซใใใทใฅใใใ
*/
DEFINE_INSN
topn
(rb_num_t n)
(...)
(VALUE val) // inc += 1;
{
val = TOPN(n);
}
/**
@c stack
@e set Nth stack entry to stack top
@j ในใฟใใฏใใใใฎๅคใ n ๅ็ฎใฎในใฟใใฏใซใณใใผ
*/
DEFINE_INSN
setn
(rb_num_t n)
(..., VALUE val)
(VALUE val) // inc += 0
{
TOPN(n-1) = val;
}
/**
@c stack
@e empty current stack
@j current stack ใ็ฉบใซใใใ
*/
DEFINE_INSN
adjuststack
(rb_num_t n)
(...)
(...) // inc -= n
{
DEC_SP(n);
}
/**********************************************************/
/* deal with setting */
/**********************************************************/
/**
@c setting
@e defined?
@j defined? ใ่กใใ
*/
DEFINE_INSN
defined
(rb_num_t op_type, VALUE obj, VALUE needstr)
(VALUE v)
(VALUE val)
{
val = vm_defined(th, GET_CFP(), op_type, obj, needstr, v);
}
/**
@c setting
@e check `target' matches `pattern'.
`flag & VM_CHECKMATCH_TYPE_MASK' describe how to check pattern.
VM_CHECKMATCH_TYPE_WHEN: ignore target and check pattern is truthy.
VM_CHECKMATCH_TYPE_CASE: check `patten === target'.
VM_CHECKMATCH_TYPE_RESCUE: check `pattern.kind_op?(Module) && pattern == target'.
if `flag & VM_CHECKMATCH_ARRAY' is not 0, then `patten' is array of patterns.
@j see above comments.
*/
DEFINE_INSN
checkmatch
(rb_num_t flag)
(VALUE target, VALUE pattern)
(VALUE result)
{
result = vm_check_match(target, pattern, flag);
}
/**
@c setting
@e check keywords are specified or not.
@j ใญใผใฏใผใใๆๅฎใใใฆใใใใฉใใใใงใใฏใใ
*/
DEFINE_INSN
checkkeyword
(lindex_t kw_bits_index, rb_num_t keyword_index)
()
(VALUE ret)
{
ret = vm_check_keyword(kw_bits_index, keyword_index, GET_EP());
}
/**
@c setting
@e trace
@j trace ็จใฎๅฝไปคใ
*/
DEFINE_INSN
trace
(rb_num_t nf)
()
()
{
rb_event_flag_t flag = (rb_event_flag_t)nf;
vm_dtrace(flag, th);
EXEC_EVENT_HOOK(th, flag, GET_SELF(), 0, 0, 0 /* id and klass are resolved at callee */,
(flag & (RUBY_EVENT_RETURN | RUBY_EVENT_B_RETURN)) ? TOPN(0) : Qundef);
}
/**********************************************************/
/* deal with control flow 1: class/module */
/**********************************************************/
/**
@c class/module
@e
enter class definition scope. if super is Qfalse, and class
"klass" is defined, it's redefine. otherwise, define "klass" class.
@j ใฏใฉในๅฎ็พฉในใณใผใใธ็งป่กใใใ
ใใ super ใ Qfalse ใง klassใฏใฉในใๅฎ็พฉใใใฆใใใฐๅๅฎ็พฉใงใใใ
ใใใงใชใใใฐใklass ใฏใฉในใๅฎ็พฉใใใ
*/
DEFINE_INSN
defineclass
(ID id, ISEQ class_iseq, rb_num_t flags)
(VALUE cbase, VALUE super)
(VALUE val)
{
VALUE klass = vm_find_or_create_class_by_id(id, flags, cbase, super);
rb_iseq_check(class_iseq);
/* enter scope */
vm_push_frame(th, class_iseq, VM_FRAME_MAGIC_CLASS | VM_ENV_FLAG_LOCAL, klass,
GET_BLOCK_HANDLER(),
(VALUE)vm_cref_push(th, klass, NULL, FALSE),
class_iseq->body->iseq_encoded, GET_SP(),
class_iseq->body->local_table_size,
class_iseq->body->stack_max);
RESTORE_REGS();
NEXT_INSN();
}
/**********************************************************/
/* deal with control flow 2: method/iterator */
/**********************************************************/
/**
@c method/iterator
@e invoke method.
@j ใกใฝใใๅผใณๅบใใ่กใใci ใซๅฟ
่ฆใชๆ
ๅ ฑใๆ ผ็ดใใใฆใใใ
*/
DEFINE_INSN
send
(CALL_INFO ci, CALL_CACHE cc, ISEQ blockiseq)
(...)
(VALUE val) // inc += - (int)(ci->orig_argc + ((ci->flag & VM_CALL_ARGS_BLOCKARG) ? 1 : 0));
{
struct rb_calling_info calling;
vm_caller_setup_arg_block(th, reg_cfp, &calling, ci, blockiseq, FALSE);
vm_search_method(ci, cc, calling.recv = TOPN(calling.argc = ci->orig_argc));
CALL_METHOD(&calling, ci, cc);
}
DEFINE_INSN
opt_str_freeze
(VALUE str)
()
(VALUE val)
{
if (BASIC_OP_UNREDEFINED_P(BOP_FREEZE, STRING_REDEFINED_OP_FLAG)) {
val = str;
}
else {
val = rb_funcall(rb_str_resurrect(str), idFreeze, 0);
}
}
DEFINE_INSN
opt_str_uminus
(VALUE str)
()
(VALUE val)
{
if (BASIC_OP_UNREDEFINED_P(BOP_UMINUS, STRING_REDEFINED_OP_FLAG)) {
val = str;
}
else {
val = rb_funcall(rb_str_resurrect(str), idUMinus, 0);
}
}
DEFINE_INSN
opt_newarray_max
(rb_num_t num)
(...)
(VALUE val) // inc += 1 - num;
{
val = vm_opt_newarray_max(num, STACK_ADDR_FROM_TOP(num));
POPN(num);
}
DEFINE_INSN
opt_newarray_min
(rb_num_t num)
(...)
(VALUE val) // inc += 1 - num;
{
val = vm_opt_newarray_min(num, STACK_ADDR_FROM_TOP(num));
POPN(num);
}
/**
@c optimize
@e Invoke method without block
@j ใใญใใฏใชใใงใกใฝใใๅผใณๅบใใ่กใใ
*/
DEFINE_INSN
opt_send_without_block
(CALL_INFO ci, CALL_CACHE cc)
(...)
(VALUE val) // inc += -ci->orig_argc;
{
struct rb_calling_info calling;
calling.block_handler = VM_BLOCK_HANDLER_NONE;
vm_search_method(ci, cc, calling.recv = TOPN(calling.argc = ci->orig_argc));
CALL_METHOD(&calling, ci, cc);
}
/**
@c method/iterator
@e super(args) # args.size => num
@j super ใๅฎ่กใใใci ใซๅฟ
่ฆใชๆ
ๅ ฑใๆ ผ็ดใใใฆใใใ
*/
DEFINE_INSN
invokesuper
(CALL_INFO ci, CALL_CACHE cc, ISEQ blockiseq)
(...)
(VALUE val) // inc += - (int)(ci->orig_argc + ((ci->flag & VM_CALL_ARGS_BLOCKARG) ? 1 : 0));
{
struct rb_calling_info calling;
calling.argc = ci->orig_argc;
vm_caller_setup_arg_block(th, reg_cfp, &calling, ci, blockiseq, TRUE);
calling.recv = GET_SELF();
vm_search_super_method(th, GET_CFP(), &calling, ci, cc);
CALL_METHOD(&calling, ci, cc);
}
/**
@c method/iterator
@e yield(args)
@j yield ใๅฎ่กใใใ
*/
DEFINE_INSN
invokeblock
(CALL_INFO ci)
(...)
(VALUE val) // inc += 1 - ci->orig_argc;
{
struct rb_calling_info calling;
calling.argc = ci->orig_argc;
calling.block_handler = VM_BLOCK_HANDLER_NONE;
calling.recv = GET_SELF();
val = vm_invoke_block(th, GET_CFP(), &calling, ci);
if (val == Qundef) {
RESTORE_REGS();
NEXT_INSN();
}
}
/**
@c method/iterator
@e return from this scope.
@j ใใฎในใณใผใใใๆใใใ
*/
DEFINE_INSN
leave
()
(VALUE val)
(VALUE val)
{
if (OPT_CHECKED_RUN) {
const VALUE *const bp = vm_base_ptr(reg_cfp);
if (reg_cfp->sp != bp) {
vm_stack_consistency_error(th, reg_cfp, bp);
}
}
RUBY_VM_CHECK_INTS(th);
if (vm_pop_frame(th, GET_CFP(), GET_EP())) {
#if OPT_CALL_THREADED_CODE
th->retval = val;
return 0;
#else
return val;
#endif
}
else {
RESTORE_REGS();
}
}
/**********************************************************/
/* deal with control flow 3: exception */
/**********************************************************/
/**
@c exception
@e longjump
@j ๅคงๅใธใฃใณใใ่กใใ
*/
DEFINE_INSN
throw
(rb_num_t throw_state)
(VALUE throwobj)
(VALUE val)
{
RUBY_VM_CHECK_INTS(th);
val = vm_throw(th, GET_CFP(), throw_state, throwobj);
THROW_EXCEPTION(val);
/* unreachable */
}
/**********************************************************/
/* deal with control flow 4: local jump */
/**********************************************************/
/**
@c jump
@e set PC to (PC + dst).
@j PC ใ (PC + dst) ใซใใใ
*/
DEFINE_INSN
jump
(OFFSET dst)
()
()
{
RUBY_VM_CHECK_INTS(th);
JUMP(dst);
}
/**
@c jump
@e if val is not false or nil, set PC to (PC + dst).
@j ใใ val ใ false ใ nil ใงใชใใใฐใPC ใ (PC + dst) ใซใใใ
*/
DEFINE_INSN
branchif
(OFFSET dst)
(VALUE val)
()
{
if (RTEST(val)) {
RUBY_VM_CHECK_INTS(th);
JUMP(dst);
}
}
/**
@c jump
@e if val is false or nil, set PC to (PC + dst).
@j ใใ val ใ false ใ nil ใชใใฐใPC ใ (PC + dst) ใซใใใ
*/
DEFINE_INSN
branchunless
(OFFSET dst)
(VALUE val)
()
{