mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
232f31ca12
In addition to detect dead canary, we try to detect the very moment when we smash the stack top. Requested by k0kubun: https://twitter.com/k0kubun/status/1085180749899194368 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66981 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
242 lines
7.4 KiB
C
242 lines
7.4 KiB
C
/**********************************************************************
|
|
|
|
insnhelper.h - helper macros to implement each instructions
|
|
|
|
$Author$
|
|
created at: 04/01/01 15:50:34 JST
|
|
|
|
Copyright (C) 2004-2007 Koichi Sasada
|
|
|
|
**********************************************************************/
|
|
|
|
#ifndef RUBY_INSNHELPER_H
|
|
#define RUBY_INSNHELPER_H
|
|
|
|
RUBY_SYMBOL_EXPORT_BEGIN
|
|
|
|
RUBY_EXTERN VALUE ruby_vm_const_missing_count;
|
|
RUBY_EXTERN rb_serial_t ruby_vm_global_method_state;
|
|
RUBY_EXTERN rb_serial_t ruby_vm_global_constant_state;
|
|
RUBY_EXTERN rb_serial_t ruby_vm_class_serial;
|
|
|
|
RUBY_SYMBOL_EXPORT_END
|
|
|
|
#if VM_COLLECT_USAGE_DETAILS
|
|
#define COLLECT_USAGE_INSN(insn) vm_collect_usage_insn(insn)
|
|
#define COLLECT_USAGE_OPERAND(insn, n, op) vm_collect_usage_operand((insn), (n), ((VALUE)(op)))
|
|
|
|
#define COLLECT_USAGE_REGISTER(reg, s) vm_collect_usage_register((reg), (s))
|
|
#else
|
|
#define COLLECT_USAGE_INSN(insn) /* none */
|
|
#define COLLECT_USAGE_OPERAND(insn, n, op) /* none */
|
|
#define COLLECT_USAGE_REGISTER(reg, s) /* none */
|
|
#endif
|
|
|
|
/**********************************************************/
|
|
/* deal with stack */
|
|
/**********************************************************/
|
|
|
|
#define PUSH(x) (SET_SV(x), INC_SP(1))
|
|
#define TOPN(n) (*(GET_SP()-(n)-1))
|
|
#define POPN(n) (DEC_SP(n))
|
|
#define POP() (DEC_SP(1))
|
|
#define STACK_ADDR_FROM_TOP(n) (GET_SP()-(n))
|
|
|
|
/**********************************************************/
|
|
/* deal with registers */
|
|
/**********************************************************/
|
|
|
|
#define VM_REG_CFP (reg_cfp)
|
|
#define VM_REG_PC (VM_REG_CFP->pc)
|
|
#define VM_REG_SP (VM_REG_CFP->sp)
|
|
#define VM_REG_EP (VM_REG_CFP->ep)
|
|
|
|
#define RESTORE_REGS() do { \
|
|
VM_REG_CFP = ec->cfp; \
|
|
} while (0)
|
|
|
|
#if VM_COLLECT_USAGE_DETAILS
|
|
enum vm_regan_regtype {
|
|
VM_REGAN_PC = 0,
|
|
VM_REGAN_SP = 1,
|
|
VM_REGAN_EP = 2,
|
|
VM_REGAN_CFP = 3,
|
|
VM_REGAN_SELF = 4,
|
|
VM_REGAN_ISEQ = 5
|
|
};
|
|
enum vm_regan_acttype {
|
|
VM_REGAN_ACT_GET = 0,
|
|
VM_REGAN_ACT_SET = 1
|
|
};
|
|
|
|
#define COLLECT_USAGE_REGISTER_HELPER(a, b, v) \
|
|
(COLLECT_USAGE_REGISTER((VM_REGAN_##a), (VM_REGAN_ACT_##b)), (v))
|
|
#else
|
|
#define COLLECT_USAGE_REGISTER_HELPER(a, b, v) (v)
|
|
#endif
|
|
|
|
/* PC */
|
|
#define GET_PC() (COLLECT_USAGE_REGISTER_HELPER(PC, GET, VM_REG_PC))
|
|
#define SET_PC(x) (VM_REG_PC = (COLLECT_USAGE_REGISTER_HELPER(PC, SET, (x))))
|
|
#define GET_CURRENT_INSN() (*GET_PC())
|
|
#define GET_OPERAND(n) (GET_PC()[(n)])
|
|
#define ADD_PC(n) (SET_PC(VM_REG_PC + (n)))
|
|
#define JUMP(dst) (SET_PC(VM_REG_PC + (dst)))
|
|
|
|
/* frame pointer, environment pointer */
|
|
#define GET_CFP() (COLLECT_USAGE_REGISTER_HELPER(CFP, GET, VM_REG_CFP))
|
|
#define GET_EP() (COLLECT_USAGE_REGISTER_HELPER(EP, GET, VM_REG_EP))
|
|
#define SET_EP(x) (VM_REG_EP = (COLLECT_USAGE_REGISTER_HELPER(EP, SET, (x))))
|
|
#define GET_LEP() (VM_EP_LEP(GET_EP()))
|
|
|
|
/* SP */
|
|
#define GET_SP() (COLLECT_USAGE_REGISTER_HELPER(SP, GET, VM_REG_SP))
|
|
#define SET_SP(x) (VM_REG_SP = (COLLECT_USAGE_REGISTER_HELPER(SP, SET, (x))))
|
|
#define INC_SP(x) (VM_REG_SP += (COLLECT_USAGE_REGISTER_HELPER(SP, SET, (x))))
|
|
#define DEC_SP(x) (VM_REG_SP -= (COLLECT_USAGE_REGISTER_HELPER(SP, SET, (x))))
|
|
#define SET_SV(x) (*GET_SP() = (x))
|
|
/* set current stack value as x */
|
|
|
|
/* instruction sequence C struct */
|
|
#define GET_ISEQ() (GET_CFP()->iseq)
|
|
|
|
/**********************************************************/
|
|
/* deal with variables */
|
|
/**********************************************************/
|
|
|
|
#define GET_PREV_EP(ep) ((VALUE *)((ep)[VM_ENV_DATA_INDEX_SPECVAL] & ~0x03))
|
|
|
|
/**********************************************************/
|
|
/* deal with values */
|
|
/**********************************************************/
|
|
|
|
#define GET_SELF() (COLLECT_USAGE_REGISTER_HELPER(SELF, GET, GET_CFP()->self))
|
|
|
|
/**********************************************************/
|
|
/* deal with control flow 2: method/iterator */
|
|
/**********************************************************/
|
|
|
|
/* set fastpath when cached method is *NOT* protected
|
|
* because inline method cache does not care about receiver.
|
|
*/
|
|
|
|
#define CC_SET_FASTPATH(cc, func, enabled) do { \
|
|
if (LIKELY(enabled)) ((cc)->call = (func)); \
|
|
} while (0)
|
|
|
|
#define GET_BLOCK_HANDLER() (GET_LEP()[VM_ENV_DATA_INDEX_SPECVAL])
|
|
|
|
/**********************************************************/
|
|
/* deal with control flow 3: exception */
|
|
/**********************************************************/
|
|
|
|
|
|
/**********************************************************/
|
|
/* deal with stack canary */
|
|
/**********************************************************/
|
|
|
|
#if VM_CHECK_MODE > 0
|
|
#define SETUP_CANARY() \
|
|
VALUE *canary; \
|
|
if (leaf) { \
|
|
canary = GET_SP(); \
|
|
SET_SV(vm_stack_canary); \
|
|
} \
|
|
else {\
|
|
SET_SV(Qfalse); /* cleanup */ \
|
|
}
|
|
#define CHECK_CANARY() \
|
|
if (leaf) { \
|
|
if (*canary == vm_stack_canary) { \
|
|
*canary = Qfalse; /* cleanup */ \
|
|
} \
|
|
else { \
|
|
vm_canary_is_found_dead(INSN_ATTR(bin), *canary); \
|
|
} \
|
|
}
|
|
#else
|
|
#define SETUP_CANARY() /* void */
|
|
#define CHECK_CANARY() /* void */
|
|
#endif
|
|
|
|
/**********************************************************/
|
|
/* others */
|
|
/**********************************************************/
|
|
|
|
#ifndef MJIT_HEADER
|
|
#define CALL_SIMPLE_METHOD() do { \
|
|
rb_snum_t x = leaf ? INSN_ATTR(width) : 0; \
|
|
rb_snum_t y = attr_width_opt_send_without_block(0, 0); \
|
|
rb_snum_t z = x - y; \
|
|
ADD_PC(z); \
|
|
DISPATCH_ORIGINAL_INSN(opt_send_without_block); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#define NEXT_CLASS_SERIAL() (++ruby_vm_class_serial)
|
|
#define GET_GLOBAL_METHOD_STATE() (ruby_vm_global_method_state)
|
|
#define INC_GLOBAL_METHOD_STATE() (++ruby_vm_global_method_state)
|
|
#define GET_GLOBAL_CONSTANT_STATE() (ruby_vm_global_constant_state)
|
|
#define INC_GLOBAL_CONSTANT_STATE() (++ruby_vm_global_constant_state)
|
|
|
|
static inline struct vm_throw_data *
|
|
THROW_DATA_NEW(VALUE val, const rb_control_frame_t *cf, VALUE st)
|
|
{
|
|
return (struct vm_throw_data *)rb_imemo_new(imemo_throw_data, val, (VALUE)cf, st, 0);
|
|
}
|
|
|
|
static inline VALUE
|
|
THROW_DATA_VAL(const struct vm_throw_data *obj)
|
|
{
|
|
VM_ASSERT(THROW_DATA_P(obj));
|
|
return obj->throw_obj;
|
|
}
|
|
|
|
static inline const rb_control_frame_t *
|
|
THROW_DATA_CATCH_FRAME(const struct vm_throw_data *obj)
|
|
{
|
|
VM_ASSERT(THROW_DATA_P(obj));
|
|
return obj->catch_frame;
|
|
}
|
|
|
|
static inline int
|
|
THROW_DATA_STATE(const struct vm_throw_data *obj)
|
|
{
|
|
VM_ASSERT(THROW_DATA_P(obj));
|
|
return (int)obj->throw_state;
|
|
}
|
|
|
|
static inline int
|
|
THROW_DATA_CONSUMED_P(const struct vm_throw_data *obj)
|
|
{
|
|
VM_ASSERT(THROW_DATA_P(obj));
|
|
return obj->flags & THROW_DATA_CONSUMED;
|
|
}
|
|
|
|
static inline void
|
|
THROW_DATA_CATCH_FRAME_SET(struct vm_throw_data *obj, const rb_control_frame_t *cfp)
|
|
{
|
|
VM_ASSERT(THROW_DATA_P(obj));
|
|
obj->catch_frame = cfp;
|
|
}
|
|
|
|
static inline void
|
|
THROW_DATA_STATE_SET(struct vm_throw_data *obj, int st)
|
|
{
|
|
VM_ASSERT(THROW_DATA_P(obj));
|
|
obj->throw_state = (VALUE)st;
|
|
}
|
|
|
|
static inline void
|
|
THROW_DATA_CONSUMED_SET(struct vm_throw_data *obj)
|
|
{
|
|
if (THROW_DATA_P(obj) &&
|
|
THROW_DATA_STATE(obj) == TAG_BREAK) {
|
|
obj->flags |= THROW_DATA_CONSUMED;
|
|
}
|
|
}
|
|
|
|
#define IS_ARGS_SPLAT(ci) ((ci)->flag & VM_CALL_ARGS_SPLAT)
|
|
#define IS_ARGS_KEYWORD(ci) ((ci)->flag & VM_CALL_KWARG)
|
|
|
|
#endif /* RUBY_INSNHELPER_H */
|